Search results

Title: Gender Composition of the Occupation, Sexual Orientation, and Mental Health in Young Adulthood.
Creator: Ueno, Koji, Vaghela, Preeti, Nix, Amanda N.
Abstract/Description: The gender composition of the occupation has important implications for work conditions, rewards, and experiences, but little is known about whether it impacts workers’ mental health. The present study seeks to answer this question by focusing on depressive symptoms and drug dependence symptoms as mental health outcomes and young adulthood as the life course context. The study further examines whether the association varies by sexual orientation, considering that occupational gender...
Show moreThe gender composition of the occupation has important implications for work conditions, rewards, and experiences, but little is known about whether it impacts workers’ mental health. The present study seeks to answer this question by focusing on depressive symptoms and drug dependence symptoms as mental health outcomes and young adulthood as the life course context. The study further examines whether the association varies by sexual orientation, considering that occupational gender composition affects levels of stress exposure and social support availability in different ways for heterosexuals and sexual minorities. The analysis of the U.S. data, the National Longitudinal Study of Adolescent to Adult Health (Add Health), shows that among heterosexuals, working in a more female-typical occupation is associated with lower levels of drug dependence symptoms for women and higher levels of depressive symptoms for men. Sexual minorities show a diverging pattern—working in a more female-typical occupation is associated with worse mental health for sexual minority women and better mental health for sexual minority men.
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Date Issued: 2017-04-18
Identifier: FSU_libsubv1_scholarship_submission_1493748644, 10.1002/smi.2755
Format: Citation

Title: Sexuality-Free Careers?: Sexual Minority Young Adults’ Perceived Lack of Labor Market Disadvantages.
Creator: Ueno, Koji
Abstract/Description: In recent studies, many young sexual minorities reported that their minority status has not undermined their career plans, despite the persistent heteronormativity in schools, workplaces, and family. By analyzing in-depth interviews of 34 sexual minority young adults, this paper examines how they develop such a perception. Their explanations included five elements—distancing themselves from sexual minorities who conformed to stereotypes about the group, overlooking career sacrifices they had...
Show moreIn recent studies, many young sexual minorities reported that their minority status has not undermined their career plans, despite the persistent heteronormativity in schools, workplaces, and family. By analyzing in-depth interviews of 34 sexual minority young adults, this paper examines how they develop such a perception. Their explanations included five elements—distancing themselves from sexual minorities who conformed to stereotypes about the group, overlooking career sacrifices they had already made, anticipating that their future careers would be sexuality-free, and maintaining a general sense of hope and optimism. Some respondents even anticipated positive career consequences, pointing to three advantages of sexual minority status, including a strong career motivation, unique skills and abilities, and favorable treatments from employers. We interpret these results by conceptualizing their career plans as a part of their life narratives, and discuss the implication of such narratives for the sexual minority population and for society.
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Date Issued: 2017-05-02
Identifier: FSU_libsubv1_scholarship_submission_1480612669, 10.1093/socpro/spx014
Format: Citation

Title: Improved Nested Sampling And Surrogate-enabled Comparison With Other Marginal Likelihood Estimators.
Creator: Zeng, Xiankui, Ye, Ming, Wu, Jichun, Wang, Dong, Zhu, Xiaobin
Abstract/Description: Estimating marginal likelihood is of central importance to Bayesian model selection and/or model averaging. The nested sampling method has been recently used together with the Metropolis-Hasting (M-H) sampling algorithm for estimating marginal likelihood. This study develops a new implementation of nested sampling by using the DiffeRential Evolution Adaptive Metropolis (DREAMzs) sampling algorithm. The two implementations of nested sampling are evaluated for four models of a synthetic...
Show moreEstimating marginal likelihood is of central importance to Bayesian model selection and/or model averaging. The nested sampling method has been recently used together with the Metropolis-Hasting (M-H) sampling algorithm for estimating marginal likelihood. This study develops a new implementation of nested sampling by using the DiffeRential Evolution Adaptive Metropolis (DREAMzs) sampling algorithm. The two implementations of nested sampling are evaluated for four models of a synthetic groundwater flow modeling. The DREAMzs-based nested sampling outperforms the M-H-based nested sampling in terms of their accuracy, convergence, efficiency, and stability, which is attributed to the fact that DREAMzs is more robust than M-H for parameter sampling. The nested sampling method is also compared with four other methods (arithmetic mean, harmonic mean, stabilized harmonic mean, and thermodynamic integration) commonly used for estimating marginal likelihood and posterior probability of the four groundwater models. The comparative study requires hundreds of millions of model executions, which would not be possible without using surrogate models to replace the original models. Using the arithmetic mean estimator as the reference, the comparison reveals that thermodynamic integration outperforms nested sampling in terms of accuracy and stability, whereas nested sampling is more computationally efficient to reach to convergence. The harmonic mean and stabilized harmonic mean methods give the worst marginal likelihood estimation. Accurate marginal likelihood estimation is important for accurate estimation of posterior model probability and better predictive performance of Bayesian model averaging.
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Date Issued: 2018-02
Identifier: FSU_libsubv1_wos_000428474500009, 10.1002/2017WR020782
Format: Citation

Title: Thrombopoietin Signaling To Chromatin Elicits Rapid And Pervasive Epigenome Remodeling Within Poised Chromatin Architectures.
Creator: Comoglio, Federico, Park, Hyun Jung, Schoenfelder, Stefan, Barozzi, Iros, Bode, Daniel, Fraser, Peter, Green, Anthony R.
Abstract/Description: Thrombopoietin (TPO) is a critical cytokine regulating hematopoietic stem cell maintenance and differentiation into the megakaryocytic lineage. However, the transcriptional and chromatin dynamics elicited by TPO signaling are poorly understood. Here, we study the immediate early transcriptional and cis-regulatory responses to TPO in hematopoietic stem/progenitor cells (HSPCs) and use this paradigm of cytokine signaling to chromatin to dissect the relationship between cis-regulatory activity...
Show moreThrombopoietin (TPO) is a critical cytokine regulating hematopoietic stem cell maintenance and differentiation into the megakaryocytic lineage. However, the transcriptional and chromatin dynamics elicited by TPO signaling are poorly understood. Here, we study the immediate early transcriptional and cis-regulatory responses to TPO in hematopoietic stem/progenitor cells (HSPCs) and use this paradigm of cytokine signaling to chromatin to dissect the relationship between cis-regulatory activity and chromatin architecture. We show that TPO profoundly alters the transcriptome of HSPCs, with key hematopoietic regulators being transcriptionally repressed within 30 min of TPO. By examining cis-regulatory dynamics and chromatin architectures, we demonstrate that these changes are accompanied by rapid and extensive epigenome remodeling of cis-regulatory landscapes that is spatially coordinated within topologically associating domains (TADs). Moreover, TPO-responsive enhancers are spatially clustered and engage in preferential homotypic intra-and inter-TAD interactions that are largely refractory to TPO signaling. By further examining the link between cis-regulatory dynamics and chromatin looping, we show that rapid modulation of cis-regulatory activity is largely independent of chromatin looping dynamics. Finally, we show that, although activated and repressed cis-regulatory elements share remarkably similar DNA sequence compositions, transcription factor binding patterns accurately predict rapid cis-regulatory responses to TPO.
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Date Issued: 2018-03
Identifier: FSU_libsubv1_wos_000426355600003, 10.1101/gr.227272.117
Format: Citation

Title: Toward Improving Ice Water Content And Snow-rate Retrievals From Radars. Part Ii: Results From Three Wavelength Radar-collocated In Situ Measurements And Cloudsat-gpm-trmm Radar Data.
Creator: Heymsfield, Andrew, Bansemer, Aaron, Wood, Norman B., Liu, Guosheng, Tanelli, Simone, Sy, Ousmane O., Poellot, Michael, Liu, Chuntao
Abstract/Description: Two methods for deriving relationships between the equivalent radar reflectivity factor Z(e) and the snowfall rate S at three radar wavelengths are described. The first method uses collocations of in situ aircraft (microphysical observations) and overflying aircraft (radar observations) from two field programs to develop Z(e)-S relationships. In the second method, measurements of Z(e) at the top of the melting layer (ML), from radars on the Tropical Rainfall Measuring Mission (TRMM), Global...
Show moreTwo methods for deriving relationships between the equivalent radar reflectivity factor Z(e) and the snowfall rate S at three radar wavelengths are described. The first method uses collocations of in situ aircraft (microphysical observations) and overflying aircraft (radar observations) from two field programs to develop Z(e)-S relationships. In the second method, measurements of Z(e) at the top of the melting layer (ML), from radars on the Tropical Rainfall Measuring Mission (TRMM), Global Precipitation Measurement (GPM), and CloudSat satellites, are related to the retrieved rainfall rate R at the base of the ML, assuming that the mass flux through the ML is constant. Retrievals of R are likely to be more reliable than S because far fewer assumptions are involved in the retrieval and because supporting ground-based validation data are available. The Z(e)-S relationships developed here for the collocations and the mass-flux technique are compared with those derived from level 2 retrievals from the standard satellite products and with a number of relationships developed and reported by others. It is shown that there are substantial differences among them. The relationships developed here promise improvements in snowfall-rate retrievals from satellite-based radar measurements.
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Date Issued: 2018-02
Identifier: FSU_libsubv1_wos_000427362400010, 10.1175/JAMC-D-17-0164.1
Format: Citation

Title: Vertical Stratification Of Peat Pore Water Dissolved Organic Matter Composition In A Peat Bog In Northern Minnesota.
Creator: Tfaily, Malak M., Wilson, Rachel M., Cooper, William T., Kostka, Joel E., Hanson, Paul, Chanton, Jeffrey P.
Abstract/Description: We characterized dissolved organic matter (DOM) composition throughout the peat column at the Marcell S1 forested bog in northern Minnesota and tested the hypothesis that redox oscillations associated with cycles of wetting and drying at the surface of the fluctuating water table correlate with increased carbon, sulfur, and nitrogen turn over. We found significant vertical stratification of DOM molecular composition and excitation-emission matrix parallel factor analysis components within the...
Show moreWe characterized dissolved organic matter (DOM) composition throughout the peat column at the Marcell S1 forested bog in northern Minnesota and tested the hypothesis that redox oscillations associated with cycles of wetting and drying at the surface of the fluctuating water table correlate with increased carbon, sulfur, and nitrogen turn over. We found significant vertical stratification of DOM molecular composition and excitation-emission matrix parallel factor analysis components within the peat column. In particular, the intermediate depth zone (similar to 50cm) was identified as a zone where maximum decomposition and turnover is taking place. Surface DOM was dominated by inputs from surface vegetation. The intermediate depth zone was an area of high organic matter reactivity and increased microbial activity with diagenetic formation of many unique compounds, among them polycyclic aromatic compounds that contain both nitrogen and sulfur heteroatoms. These compounds have been previously observed in coal-derived compounds and were assumed to be responsible for coal's biological activity. Biological processes triggered by redox oscillations taking place at the intermediate depth zone of the peat profile at the S1 bog are assumed to be responsible for the formation of these heteroatomic PACs in this system. Alternatively, these compounds could stem from black carbon and nitrogen derived from fires that have occurred at the site in the past. Surface and deep DOM exhibited more similar characteristics, compared to the intermediate depth zone, with the deep layer exhibiting greater input of microbially degraded organic matter than the surface suggesting that the entire peat profile consists of similar parent material at different degrees of decomposition and that lateral and vertical advection of pore water from the surface to the deeper horizons is responsible for such similarities. Our findings suggest that molecular composition of DOM in peatland pore water is dynamic and is a function of ecosystem activity, water table, redox oscillation, and pore water advection. Plain Language Summary We found strong vertical stratification in dissolved organic matter molecular composition and optical properties within the peat column at the S1 bog. Surface samples were dominated by inputs from surface vegetation. The intermediate depth (similar to 50cm) was an area of high reactivity and increased microbial activity with diagenetic formation of many unique compounds such as polycyclic aromatic compounds (PACs) that contain both nitrogen and sulfur heteroatoms. These compounds were previously observed in coal-derived products and were assumed to be responsible for coal's biological activity. Biological processes taking place at the intermediate depth zone of the peat profile at the S1 bog are assumed to be responsible for the formation of these heteroatomic PACs in our system. Conversely, these compounds might stem from black carbon and nitrogen from potential fires that occurred at the site in the past.
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Date Issued: 2018-02
Identifier: FSU_libsubv1_wos_000427478500011, 10.1002/2017JG004007
Format: Citation

Title: Process-oriented Diagnosis Of Tropical Cyclones In High-resolution Gcms.
Creator: Kim, Daehyun, Moon, Yumin, Camargo, Suzana J., Wing, Allison A., Sobel, Adam H., Murakami, Hiroyuki, Vecchi, Gabriel A., Zhao, Ming, Page, Eric
Abstract/Description: This study proposes a set of process-oriented diagnostics with the aim of understanding how model physics and numerics control the representation of tropical cyclones (TCs), especially their intensity distribution, in GCMs. Three simulations are made using two 50-km GCMs developed at NOAA's Geophysical Fluid Dynamics Laboratory. The two models are forced with the observed sea surface temperature [Atmospheric Model version 2.5 (AM2.5) and High Resolution Atmospheric Model (HiRAM)], and in the...
Show moreThis study proposes a set of process-oriented diagnostics with the aim of understanding how model physics and numerics control the representation of tropical cyclones (TCs), especially their intensity distribution, in GCMs. Three simulations are made using two 50-km GCMs developed at NOAA's Geophysical Fluid Dynamics Laboratory. The two models are forced with the observed sea surface temperature [Atmospheric Model version 2.5 (AM2.5) and High Resolution Atmospheric Model (HiRAM)], and in the third simulation, the AM2.5 model is coupled to an ocean GCM [Forecast-Oriented Low Ocean Resolution (FLOR)]. The frequency distributions of maximum near-surface wind near TC centers show that HiRAM tends to develop stronger TCs than the other models do. Large-scale environmental parameters, such as potential intensity, do not explain the differences between HiRAM and the other models. It is found that HiRAM produces a greater amount of precipitation near the TC center, suggesting that associated greater diabatic heating enables TCs to become stronger in HiRAM. HiRAM also shows a greater contrast in relative humidity and surface latent heat flux between the inner and outer regions of TCs. Various fields are composited on precipitation percentiles to reveal the essential character of the interaction among convection, moisture, and surface heat flux. Results show that the moisture sensitivity of convection is higher in HiRAM than in the other model simulations. HiRAM also exhibits a stronger feedback from surface latent heat flux to convection via near-surface wind speed in heavy rain-rate regimes. The results emphasize that the moisture-convection coupling and the surface heat flux feedback are critical processes that affect the intensity of TCs in GCMs.
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Date Issued: 2018-03
Identifier: FSU_libsubv1_wos_000427438100001, 10.1175/JCLI-D-17-0269.1
Format: Citation

Title: The Itcz And The Seasonal Cycle Over Equatorial Africa.
Creator: Nicholson, Sharon E.
Date Issued: 2018-02
Identifier: FSU_libsubv1_wos_000426486800008, 10.1175/BAMS-D-16-0287.1
Format: Citation

Title: Single Crystal Elasticity Of Natural Topaz At High-temperatures.
Creator: Tennakoon, Sumudu, Peng, Ye, Mookherjee, Mainak, Speziale, Sergio, Manthilake, Geeth, Besara, Tiglet, Andreu, Luis, Rivera, Fernando
Abstract/Description: Topaz is an aluminosilicate mineral phase stable in the hydrothermally altered pegmatitic rocks and also in subducted sedimentary lithologies. In nature, topaz often exhibits solid solution between fluorine and hydrous end members. We investigated elasticity of naturally occurring single crystal topaz (Al2SiO4F1.42(OH)(0.58)) using Resonant Ultrasound Spectroscopy. We also explored the temperature dependence of the full elastic constant tensor. We find that among the various minerals stable...
Show moreTopaz is an aluminosilicate mineral phase stable in the hydrothermally altered pegmatitic rocks and also in subducted sedimentary lithologies. In nature, topaz often exhibits solid solution between fluorine and hydrous end members. We investigated elasticity of naturally occurring single crystal topaz (Al2SiO4F1.42(OH)(0.58)) using Resonant Ultrasound Spectroscopy. We also explored the temperature dependence of the full elastic constant tensor. We find that among the various minerals stable in the Al2O3-SiO2-H2O ternary system, topaz exhibits moderate elastic anisotropy. As a function of temperature, the sound velocity of topaz decreases with dV(P)/dT and dV(S)/dT being -3.10 and -2.30 x 10(-4) km/s/K. The elasticity and sound velocity of topaz also vary as a function of OH and F content. The effect of composition (x(OH)) on the velocity is equally important as that of the effect of temperature. We also note that the Debye temperature (Theta(D)) of topaz at room temperature condition is 910 K and decreases at higher temperature. The Debye temperature shows positive correlation with density of the mineral phases in the Al2O3-SiO2-H2O ternary system.
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Date Issued: 2018-01-22
Identifier: FSU_libsubv1_wos_000422912100055, 10.1038/s41598-017-17856-3
Format: Citation

Title: Luminescent Zero-dimensional Organic Metal Halide Hybrids With Near-unity Quantum Efficiency.
Creator: Zhou, Chenkun, Lin, Haoran, Tian, Yu, Yuan, Zhao, Clark, Ronald, Chen, Banghao, van de Burgt, Lambertus J., Wang, Jamie C., Zhou, Yan, Hanson, Kenneth, Meisner, Quinton J., Neu,...
Show moreZhou, Chenkun, Lin, Haoran, Tian, Yu, Yuan, Zhao, Clark, Ronald, Chen, Banghao, van de Burgt, Lambertus J., Wang, Jamie C., Zhou, Yan, Hanson, Kenneth, Meisner, Quinton J., Neu, Jennifer, Besara, Tiglet, Siegrist, Theo, Lambers, Eric, Djurovich, Peter, Ma, Biwu
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Abstract/Description: Single crystalline zero-dimensional (0D) organic-inorganic hybrid materials with perfect host-guest structures have been developed as a new generation of highly efficient light emitters. Here we report a series of lead-free organic metal halide hybrids with a 0D structure, (C4N2H14X)(4)SnX6 (X = Br, I) and (C9NH20)(2)SbX5 (X = Cl), in which the individual metal halide octahedra (SnX64-) and quadrangular pyramids (SbX52-) are completely isolated from each other and surrounded by the organic...
Show moreSingle crystalline zero-dimensional (0D) organic-inorganic hybrid materials with perfect host-guest structures have been developed as a new generation of highly efficient light emitters. Here we report a series of lead-free organic metal halide hybrids with a 0D structure, (C4N2H14X)(4)SnX6 (X = Br, I) and (C9NH20)(2)SbX5 (X = Cl), in which the individual metal halide octahedra (SnX64-) and quadrangular pyramids (SbX52-) are completely isolated from each other and surrounded by the organic ligands C4N2H14X+ and C9NH20+, respectively. The isolation of the photoactive metal halide species by the wide band gap organic ligands leads to no interaction or electronic band formation between the metal halide species, allowing the bulk materials to exhibit the intrinsic properties of the individual metal halide species. These 0D organic metal halide hybrids can also be considered as perfect host-guest systems, with the metal halide species periodically doped in the wide band gap matrix. Highly luminescent, strongly Stokes shifted broadband emissions with photoluminescence quantum efficiencies (PLQEs) of close to unity were realized, as a result of excited state structural reorganization of the individual metal halide species. Our discovery of highly luminescent single crystalline 0D organic-inorganic hybrid materials as perfect host-guest systems opens up a new paradigm in functional materials design.
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Date Issued: 2018-01-21
Identifier: FSU_libsubv1_wos_000422947000005, 10.1039/c7sc04539e
Format: Citation

Title: Absence Of Dirac States In Baznbi2 Induced By Spin-orbit Coupling.
Creator: Ren, Weijun, Wang, Aifeng, Graf, D., Liu, Yu, Zhang, Zhidong, Yin, Wei-Guo, Petrovic, C.
Abstract/Description: We report magnetotransport properties of BaZnBi2 single crystals. Whereas electronic structure features Dirac states, such states are removed from the Fermi level by spin-orbit coupling (SOC) and consequently electronic transport is dominated by the small hole and electron pockets. Our results are consistent with not only three-dimensional, but also with quasi-two-dimensional portions of the Fermi surface. The SOC-induced gap in Dirac states is much larger when compared to isostructural...
Show moreWe report magnetotransport properties of BaZnBi2 single crystals. Whereas electronic structure features Dirac states, such states are removed from the Fermi level by spin-orbit coupling (SOC) and consequently electronic transport is dominated by the small hole and electron pockets. Our results are consistent with not only three-dimensional, but also with quasi-two-dimensional portions of the Fermi surface. The SOC-induced gap in Dirac states is much larger when compared to isostructural SrMnBi2. This suggests that not only long-range magnetic order, but also mass of the alkaline-earth atoms A in ABX(2) (A = alkaline-earth, B = transition-metal, and X = Bi/Sb) are important for the presence of low-energy states obeying the relativistic Dirac equation at the Fermi surface.
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Date Issued: 2018-01-22
Identifier: FSU_libsubv1_wos_000423341500001, 10.1103/PhysRevB.97.035147
Format: Citation

Title: Flows With Fractional Quantum Circulation In Bose-einstein Condensates Induced By Nontopological Phase Defects.
Creator: Kanai, Toshiaki, Guo, Wei, Tsubota, Makoto
Abstract/Description: It is a common view that rotational motion in a superfluid can exist only in the presence of topological defects, i.e., quantized vortices. However, in our numerical studies on the merging of two concentric Bose-Einstein condensates with axial symmetry in two-dimensional space, we observe the emergence of a spiral dark soliton when one condensate has a nonzero initial angular momentum. This spiral dark soliton enables the transfer of angular momentum between the condensates and allows the...
Show moreIt is a common view that rotational motion in a superfluid can exist only in the presence of topological defects, i.e., quantized vortices. However, in our numerical studies on the merging of two concentric Bose-Einstein condensates with axial symmetry in two-dimensional space, we observe the emergence of a spiral dark soliton when one condensate has a nonzero initial angular momentum. This spiral dark soliton enables the transfer of angular momentum between the condensates and allows the merged condensate to rotate even in the absence of quantized vortices. Our examination of the flow field around the soliton strikingly reveals that its sharp endpoint can induce flow like a vortex point but with a fraction of a quantized circulation. This interesting nontopological "phase defect" may generate broad interest since rotational motion is essential in many quantum transport processes.
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Date Issued: 2018-01-16
Identifier: FSU_libsubv1_wos_000423107800023, 10.1103/PhysRevA.97.013612
Format: Citation

Title: Utilizing Dietary Micronutrient Ratios In Nutritional Research May Be More Informative Than Focusing On Single Nutrients.
Creator: Kelly, Owen J., Gilman, Jennifer C., Ilich, Jasminka Z.
Abstract/Description: The 2015 US dietary guidelines advise the importance of good dietary patterns for health, which includes all nutrients. Micronutrients are rarely, if ever, consumed separately, they are not tissue specific in their actions and at the molecular level they are multitaskers. Metabolism functions within a seemingly random cellular milieu however ratios are important, for example, the ratio of adenosine triphosphate to adenosine monophosphate, or oxidized to reduced glutathione. Health status is...
Show moreThe 2015 US dietary guidelines advise the importance of good dietary patterns for health, which includes all nutrients. Micronutrients are rarely, if ever, consumed separately, they are not tissue specific in their actions and at the molecular level they are multitaskers. Metabolism functions within a seemingly random cellular milieu however ratios are important, for example, the ratio of adenosine triphosphate to adenosine monophosphate, or oxidized to reduced glutathione. Health status is determined by simple ratios, such as the waist hip ratio, or ratio of fat mass to lean mass. Some nutrient ratios exist and remain controversial such as the omega-6/omega-3 fatty acid ratio and the sodium/potassium ratio. Therefore, examining ratios of micronutrients may convey more information about how diet and health outcomes are related. Summarized micronutrient intake data, from food only, from the National Health and Nutrition Examination Survey, were used to generate initial ratios. Overall, in this preliminary analysis dietary ratios of micronutrients showed some differences between intakes and recommendations. Principles outlined here could be used in nutritional epidemiology and in basic nutritional research, rather than focusing on individual nutrient intakes. This paper presents the concept of micronutrient ratios to encourage change in the way nutrients are regarded.
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Date Issued: 2018-01
Identifier: FSU_libsubv1_wos_000424088000106, 10.3390/nu10010107
Format: Citation

Title: Atomic Resolution Structures Of Human Bufaviruses Determined By Cryo-electron Microscopy.
Creator: Ilyas, Maria, Mietzsch, Mario, Kailasan, Shweta, Vaisanen, Elina, Luo, Mengxiao, Chipman, Paul, Smith, J. Kennon, Kurian, Justin, Sousa, Duncan, McKenna, Robert, Soderlund...
Show moreIlyas, Maria, Mietzsch, Mario, Kailasan, Shweta, Vaisanen, Elina, Luo, Mengxiao, Chipman, Paul, Smith, J. Kennon, Kurian, Justin, Sousa, Duncan, McKenna, Robert, Soderlund-Venermo, Maria, Agbandje-McKenna, Mavis
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Abstract/Description: Bufavirus strain 1 (BuV1), a member of the Protoparvovirus genus of the Parvoviridae, was first isolated from fecal samples of children with acute diarrhea in Burkina Faso. Since this initial discovery, BuVs have been isolated in several countries, including Finland, the Netherlands, and Bhutan, in pediatric patients exhibiting similar symptoms. Towards their characterization, the structures of virus-like particles of BuV1, BuV2, and BuV3, the current known genotypes, have been determined by...
Show moreBufavirus strain 1 (BuV1), a member of the Protoparvovirus genus of the Parvoviridae, was first isolated from fecal samples of children with acute diarrhea in Burkina Faso. Since this initial discovery, BuVs have been isolated in several countries, including Finland, the Netherlands, and Bhutan, in pediatric patients exhibiting similar symptoms. Towards their characterization, the structures of virus-like particles of BuV1, BuV2, and BuV3, the current known genotypes, have been determined by cryo-electron microscopy and image reconstruction to 2.84, 3.79, and 3.25 angstrom, respectively. The BuVs, 65-73% identical in amino acid sequence, conserve the major viral protein, VP2, structure and general capsid surface features of parvoviruses. These include a core -barrel (B-I), -helix A, and large surface loops inserted between these elements in VP2. The capsid contains depressions at the icosahedral 2-fold and around the 5-fold axes, and has three separated protrusions surrounding the 3-fold axes. Structure comparison among the BuVs and to available parvovirus structures revealed capsid surface variations and capsid 3-fold protrusions that depart from the single pinwheel arrangement of the animal protoparvoviruses. These structures provide a platform to begin the molecular characterization of these potentially pathogenic viruses.
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Date Issued: 2018-01
Identifier: FSU_libsubv1_wos_000424414900022, 10.3390/v10010022
Format: Citation

Title: Applying The Coastal And Marine Ecological Classification Standard (cmecs) To Nearshore Habitats In The Northeastern Gulf Of Mexico.
Creator: Kingon, Kelly
Abstract/Description: Many countries have classification standards for their environmental resources including criteria for classifying coastal and marine ecosystems. Until 2012, the United States just had a nationwide protocol for classifying terrestrial and aquatic habitats with no national standard for marine and most coastal habitats. In 2012 the Coastal and Marine Ecological Classification Standard (CMECS) was implemented to address this need. In the past, coastal and marine classifications were developed at...
Show moreMany countries have classification standards for their environmental resources including criteria for classifying coastal and marine ecosystems. Until 2012, the United States just had a nationwide protocol for classifying terrestrial and aquatic habitats with no national standard for marine and most coastal habitats. In 2012 the Coastal and Marine Ecological Classification Standard (CMECS) was implemented to address this need. In the past, coastal and marine classifications were developed at the regional or local level. Since its inception, the CMECS has not been applied in many geographic areas. My study was one of the first to apply the CMECS to the benthic habitats in the nearshore Northeastern Gulf of Mexico. Sidescan sonar mapping and dive surveys were completed at 33 sites at depths 10-23 m. Hardbottom and sand habitats characterized the study area, and the underwater surveys revealed hard corals, sponges, and macroalgae as the dominant taxa on the hardbottom. The CMECS was applied to the overall study area rather than each individual site or groups of similar sites because habitat and environmental characteristics, primarily outside the context of the CMECS, appeared to influence the distribution of taxa across sites more than the CMECS geoform, substrate, and water column components. The CMECS worked well for classifying the entire study area, but was not adequate for classifying the complex fine-scale habitats and temporal variations observed; modifications to the CMECS could help resolve these issues.
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Date Issued: 2018-01
Identifier: FSU_libsubv1_wos_000424119100022, 10.3390/geosciences8010022
Format: Citation

Title: Discovery Of Slow Magnetic Fluctuations And Critical Slowing Down In The Pseudogap Phase Of Yba2cu3oy.
Creator: Zhang, Jian, Ding, Zhaofeng, Tan, Cheng, Huang, Kevin, Bernal, Oscar O., Ho, Pei-Chun, Morris, Gerald D., Hillier, Adrian D., Biswas, Pabitra K., Cottrell, Stephen P., Xiang,...
Show moreZhang, Jian, Ding, Zhaofeng, Tan, Cheng, Huang, Kevin, Bernal, Oscar O., Ho, Pei-Chun, Morris, Gerald D., Hillier, Adrian D., Biswas, Pabitra K., Cottrell, Stephen P., Xiang, Hui, Yao, Xin, MacLaughlin, Douglas E., Shu, Lei
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Abstract/Description: The origin of the pseudogap region below a temperature T* is at the heart of the mysteries of cuprate high-temperature superconductors. Unusual properties of the pseudogap phase, such as broken time-reversal and inversion symmetry are observed in several symmetry-sensitive experiments: polarized neutron diffraction, optical birefringence, dichroic angle-resolved photoemission spectroscopy, second harmonic generation, and polar Kerr effect. These properties suggest that the pseudogap region is...
Show moreThe origin of the pseudogap region below a temperature T* is at the heart of the mysteries of cuprate high-temperature superconductors. Unusual properties of the pseudogap phase, such as broken time-reversal and inversion symmetry are observed in several symmetry-sensitive experiments: polarized neutron diffraction, optical birefringence, dichroic angle-resolved photoemission spectroscopy, second harmonic generation, and polar Kerr effect. These properties suggest that the pseudogap region is a genuine thermodynamic phase and are predicted by theories invoking ordered loop currents or other formsof intra-unit-cell (IUC) magnetic order. However, muon spin rotation (mSR) and nuclearmagnetic resonance (NMR) experiments do not see the static local fields expected for magnetic order, leaving room for skepticism. The magnetic resonance probes have much longer time scales, however, over which local fields could be averaged by fluctuations. The observable effect of the fluctuations inmagnetic resonance is then dynamic relaxation. We have measured dynamic muon spin relaxation rates in single crystals of YBa2Cu3Oy (6.72 < y < 6.95) and have discovered "slow" fluctuating magnetic fields with magnitudes and fluctuation rates of the expected orders of magnitude that set in consistently at temperatures T-mag approximate to T*. The absence of any static field (to which mSR would be linearly sensitive) is consistent with the finite correlation length from neutron diffraction. Equally important, these fluctuations exhibit the critical slowing downat T-mag expected near a time-reversal symmetrybreaking transition. Our results explain the absence of static magnetism and provide support for the existence of IUC magnetic order in the pseudogap phase.
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Date Issued: 2018-01
Identifier: FSU_libsubv1_wos_000426694200044, 10.1126/sciadv.aao5235
Format: Citation

Title: Ecosystem-based Fisheries Management For Social-ecological Systems: Renewing The Focus In The United States With Next Generation Fishery Ecosystem Plans.
Creator: Marshall, Kristin N., Levin, Phillip S., Essington, Timothy E., Koehn, Laura E., Anderson, Lee G., Bundy, Alida, Carothers, Courtney, Coleman, Felicia, Gerber, Leah R.,...
Show moreMarshall, Kristin N., Levin, Phillip S., Essington, Timothy E., Koehn, Laura E., Anderson, Lee G., Bundy, Alida, Carothers, Courtney, Coleman, Felicia, Gerber, Leah R., Grabowski, Jonathan H., Houde, Edward, Jensen, Olaf P., Moellmann, Christian, Rose, Kenneth, Sanchirico, James N., Smith, Anthony D. M.
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Abstract/Description: Resource managers and policy makers have long recognized the importance of considering fisheries in the context of ecosystems; yet, movement towards widespread Ecosystem-based Fisheries Management (EBFM) has been slow. A conceptual reframing of fisheries management is occurring globally, which envisions fisheries as systems with interacting biophysical and human subsystems. This broader view, along with a process for decision making, can facilitate implementation of EBFM. A pathway to achieve...
Show moreResource managers and policy makers have long recognized the importance of considering fisheries in the context of ecosystems; yet, movement towards widespread Ecosystem-based Fisheries Management (EBFM) has been slow. A conceptual reframing of fisheries management is occurring globally, which envisions fisheries as systems with interacting biophysical and human subsystems. This broader view, along with a process for decision making, can facilitate implementation of EBFM. A pathway to achieve these broadened objectives of EBFM in the United States is a Fishery Ecosystem Plan (FEP). The first generation of FEPs was conceived in the late 1990s as voluntary guidance documents that Regional Fishery Management Councils could adopt to develop and guide their ecosystem-based fisheries management decisions, but few of these FEPs took concrete steps to implement EBFM. Here, we emphasize the need for a new generation of FEPs that provide practical mechanisms for putting EBFM into practice in the United States. We argue that next-generation FEPs can balance environmental, economic, and social objectivesthe triple bottom lineto improve long-term planning for fishery systems.
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Date Issued: 2018-02
Identifier: FSU_libsubv1_wos_000424825900019, 10.1111/conl.12367
Format: Citation

Title: Multidimensional Models Of Type Ia Supernova Nebular Spectra: Strong Emission Lines From Stripped Companion Gas Rule Out Classic Single-degenerate Systems.
Creator: Botyanszki, Janos, Kasen, Daniel, Plewa, Tomasz
Abstract/Description: The classic single-degenerate model for the progenitors of Type Ia supernova (SN Ia) predicts that the supernova ejecta should be enriched with solar-like abundance material stripped from the companion star. Spectroscopic observations of normal SNe. Ia at late times, however, have not resulted in definite detection of hydrogen. In this Letter, we study line formation in SNe Ia at nebular times using non-LTE spectral modeling. We present, for the first time, multidimensional radiative transfer...
Show moreThe classic single-degenerate model for the progenitors of Type Ia supernova (SN Ia) predicts that the supernova ejecta should be enriched with solar-like abundance material stripped from the companion star. Spectroscopic observations of normal SNe. Ia at late times, however, have not resulted in definite detection of hydrogen. In this Letter, we study line formation in SNe Ia at nebular times using non-LTE spectral modeling. We present, for the first time, multidimensional radiative transfer calculations of SNe Ia with stripped material mixed in the ejecta core, based on hydrodynamical simulations of ejecta-companion interaction. We find that interaction models with main-sequence companions produce significant Ha emission at late times, ruling out these types of binaries being viable progenitors of SNe Ia. We also predict significant He I line emission at optical and near-infrared wavelengths for both hydrogen-rich or helium-rich material, providing an additional observational probe of stripped ejecta. We produce models with reduced stripped masses and find a more stringent mass limit of M-st less than or similar to 1 x 10(-4) M-circle dot of stripped companion material for SN 2011fe.
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Date Issued: 2018-01-01
Identifier: FSU_libsubv1_wos_000418932600003, 10.3847/2041-8213/aaa07b
Format: Citation

Title: Structural And Optical Properties Of Nanocrystalline Tio2 With Multiwalled Carbon Nanotubes And Its Photovoltaic Studies Using Ru(ii) Sensitizers.
Creator: Delekar, Sagar D., Dhodamani, Ananta G., More, Krantiveer V., Dongale, Tukaram D., Kamat, Rajanish K., Acquah, Steve F. A., Dalal, Naresh S., Panda, Dillip K.
Abstract/Description: In this study, the in situ sol-gel method has been deployed to prepare the titanium dioxide/multiwalled carbon nanotubes (TiO2/MWCNTs) nanocomposite (NCs) powders with varying content of MWCNTs (0.01-1.0 wt %), to construct the dye-sensitized solar cells (DSSCs). First, binder-free NCs were deposited on a transparent-conducting F:SnO2 (FTO) glass substrate by a doctor-blade technique and then anchored with Ru(II)-based dyes to either N719 or ruthenium phthalocyanine (RuPc). The structural and...
Show moreIn this study, the in situ sol-gel method has been deployed to prepare the titanium dioxide/multiwalled carbon nanotubes (TiO2/MWCNTs) nanocomposite (NCs) powders with varying content of MWCNTs (0.01-1.0 wt %), to construct the dye-sensitized solar cells (DSSCs). First, binder-free NCs were deposited on a transparent-conducting F:SnO2 (FTO) glass substrate by a doctor-blade technique and then anchored with Ru(II)-based dyes to either N719 or ruthenium phthalocyanine (RuPc). The structural and optical properties and interconnectivity of the materials within the composite are investigated thoroughly by various spectral techniques (XRD, XPS, Raman, FT-IR, and UV-vis), electron microscopy (HRTEM), and BET analysis. The experimental results suggest that the ratio of MWCNTs and TiO2 in NCs, morphology, and their interconnectivity influenced their structural, optical, and photovoltaic properties significantly. Finally, the photovoltaic performances of the assembled DSSCs with different content of MWCNTs to TiO2 films anchored with two different dyes were tested under one sun irradiation (100 mW/cm(2)). The measured current-voltage (IV) curve and incident photon-to-current conversion efficiency (IPCE) spectra of TiO2/0.1 wt % MWCNTs (T@0.1 C) for N719 dye show three times more power conversion efficiency (eta = 6.21%) which is opposed to an efficiency (eta = 2.07%) of T@0.1 C for RuPc dye under the same operating conditions.
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Date Issued: 2018-03
Identifier: FSU_libsubv1_wos_000427939400031, 10.1021/acsomega.7b01316
Format: Citation

Title: Numerical Modeling And Sensitivity Analysis Of Seawater Intrusion In A Dual-permeability Coastal Karst Aquifer With Conduit Networks.
Creator: Xu, Zexuan, Hu, Bill X., Ye, Ming
Abstract/Description: Long-distance seawater intrusion has been widely observed through the subsurface conduit system in coastal karst aquifers as a source of groundwater contaminant. In this study, seawater intrusion in a dual-permeability karst aquifer with conduit networks is studied by the two-dimensional density-dependent flow and transport SEAWAT model. Local and global sensitivity analyses are used to evaluate the impacts of boundary conditions and hydrological characteristics on modeling seawater intrusion...
Show moreLong-distance seawater intrusion has been widely observed through the subsurface conduit system in coastal karst aquifers as a source of groundwater contaminant. In this study, seawater intrusion in a dual-permeability karst aquifer with conduit networks is studied by the two-dimensional density-dependent flow and transport SEAWAT model. Local and global sensitivity analyses are used to evaluate the impacts of boundary conditions and hydrological characteristics on modeling seawater intrusion in a karst aquifer, including hydraulic conductivity, effective porosity, specific storage, and dispersivity of the conduit network and of the porous medium. The local sensitivity analysis evaluates the parameters' sensitivities for modeling seawater intrusion, specifically in the Woodville Karst Plain (WKP). A more comprehensive interpretation of parameter sensitivities, including the nonlinear relationship between simulations and parameters, and/or parameter interactions, is addressed in the global sensitivity analysis. The conduit parameters and boundary conditions are important to the simulations in the porous medium because of the dynamical exchanges between the two systems. The sensitivity study indicates that salinity and head simulations in the karst features, such as the conduit system and submarine springs, are critical for understanding seawater intrusion in a coastal karst aquifer. The evaluation of hydraulic conductivity sensitivity in the continuum SEAWAT model may be biased since the conduit flow velocity is not accurately calculated by Darcy's equation as a function of head difference and hydraulic conductivity. In addition, dispersivity is no longer an important parameter in an advection-dominated karst aquifer with a conduit system, compared to the sensitivity results in a porous medium aquifer. In the end, the extents of seawater intrusion are quantitatively evaluated and measured under different scenarios with the variabilities of important parameters identified from sensitivity results, including salinity at the submarine spring with rainfall recharge, sea level rise, and a longer simulation time under an extended low rainfall period.
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Date Issued: 2018-01-12
Identifier: FSU_libsubv1_wos_000419992400001, 10.5194/hess-22-221-2018
Format: Citation

Title: Colloquium: High Pressure And Road To Room Temperature Superconductivity.
Creator: Gor'kov, Lev P., Kresin, Vladimir Z.
Abstract/Description: This Colloquium is concerned with the superconducting state of new high-T-c compounds containing hydrogen ions (hydrides). Recently superconductivity with the record-setting transition temperature of T-c = 203 K was reported for sulfur hydrides under high pressure. In general, high pressure serves as a path finding tool toward novel structures, including those with very high T-c. The field has a rich and interesting history. Currently, it is broadly recognized that superconductivity in sulfur...
Show moreThis Colloquium is concerned with the superconducting state of new high-T-c compounds containing hydrogen ions (hydrides). Recently superconductivity with the record-setting transition temperature of T-c = 203 K was reported for sulfur hydrides under high pressure. In general, high pressure serves as a path finding tool toward novel structures, including those with very high T-c. The field has a rich and interesting history. Currently, it is broadly recognized that superconductivity in sulfur hydrides owes its origin to the phonon mechanism. However, the picture differs from the conventional one in important ways. The phonon spectrum in sulfur hydride is both broad and has a complex structure. Superconductivity arises mainly due to strong coupling to the high-frequency optical modes, although the acoustic phonons also make a noticeable contribution. A new approach is described, which generalizes the standard treatment of the phonon mechanism and makes it possible to obtain an analytical expression for T-c in this phase. It turns out that, unlike in the conventional case, the value of the isotope coefficient (for the deuterium-hydrogen substitution) varies with the pressure and reflects the impact of the optical modes. The phase diagram, that is the pressure dependence of T-c, is rather peculiar. A crucial feature is that increasing pressure results in a series of structural transitions, including the one which yields the superconducting phase with the record T-c of 203 K. In a narrow region near P approximate to 150 GPa the critical temperature rises sharply from T-c approximate to 120 to approximate to 200 K. It seems that the sharp structural transition, which produces the high-Tc phase, is a first-order phase transition caused by interaction between the order parameter and lattice deformations. A remarkable feature of the electronic spectrum in the high-Tc phase is the appearance of small pockets at the Fermi level. Their presence leads to a two-gap spectrum, which can, in principle, be observed with the future use of tunneling spectroscopy. This feature leads to nonmonotonic and strongly asymmetric pressure dependence of T-c. Other hydrides, e.g., CaH6 and MgH6, can be expected to display even higher values of T-c up to room temperature. The fundamental challenge lies in the creation of a structure capable of displaying high T-c at ambient pressure.
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Date Issued: 2018-01-09
Identifier: FSU_libsubv1_wos_000419622300001, 10.1103/RevModPhys.90.011001
Format: Citation

Title: Key Attributes Of Patient Centered Medical Homes Associated With Patient Activation Of Diabetes Patients.
Creator: Bilello, Lori A., Hall, Allyson, Harman, Jeffrey, Scuderi, Christopher, Shah, Nipa, Mills, Jon C., Samuels, Shenae
Abstract/Description: Background: Approximately 24 million Americans are living with diabetes. Patient activation among individuals with diabetes is critical to successful diabetes management. The Patient Centered Medical Home (PCMH) model holds promise for increasing patient activation in managing their health. However, what is not well understood is the extent to which individual components of the PCMH model, such as the quality of physician-patient interactions and organizational features of care, contribute to...
Show moreBackground: Approximately 24 million Americans are living with diabetes. Patient activation among individuals with diabetes is critical to successful diabetes management. The Patient Centered Medical Home (PCMH) model holds promise for increasing patient activation in managing their health. However, what is not well understood is the extent to which individual components of the PCMH model, such as the quality of physician-patient interactions and organizational features of care, contribute to patient activation. This study's objective is to determine the relative importance of the PCMH constructs or domains to patient activation among individuals living with diabetes. Methods: This study is a cross-sectional analysis of 1253 primary care patients surveyed with type II diabetes. The dependent variable, patient activation, was assessed using the Patient Activation Measure (PAM). Independent variables included 7 PCMH domains-organizational access, integration of care, comprehensive knowledge, office staff helpfulness, communication, interpersonal treatment and trust. Ordered logistic regression was performed to determine whether each PCMH domain was independently associated with patient activation, followed by a final ordered logistic regression that included all the PCMH domains in a single adjusted model. Results: Using the full adjusted model, the odds of patients reporting higher activation scores (PAM) were found to be significant in the domains that represented organizational access (OR 1.56, 95% CI 1.31-1.85) and comprehensive knowledge (OR 1.44, 95% CI 1.13-1.85). Conclusions: Many practices have struggled with the challenge to develop fully functional patient-centered medical homes. In an effort to become more patient-centered, this study aimed to address what factors activated diabetic patients to adhere to diabetes management plan. Understanding these factors can help identify PCMH attributes that practices can prioritize and improve upon to assist their patients in improving health outcomes.
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Date Issued: 2018-01-05
Identifier: FSU_libsubv1_wos_000419880900002, 10.1186/s12875-017-0704-3
Format: Citation

Title: Synchrotron-generated Microbeams Induce Hippocampal Transections In Rats.
Creator: Fardone, Erminia, Pouyatos, Benoit, Brauer-Krisch, Elke, Bartzsch, Stefan, Mathieu, Herve, Requardt, Herwig, Bucci, Domenico, Barbone, Giacomo, Coan, Paola, Battaglia, Giuseppe,...
Show moreFardone, Erminia, Pouyatos, Benoit, Brauer-Krisch, Elke, Bartzsch, Stefan, Mathieu, Herve, Requardt, Herwig, Bucci, Domenico, Barbone, Giacomo, Coan, Paola, Battaglia, Giuseppe, Le Duc, Geraldine, Bravin, Alberto, Romanelli, Pantaleo
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Abstract/Description: Synchrotron-generated microplanar beams (microbeams) provide the most stereo-selective irradiation modality known today. This novel irradiation modality has been shown to control seizures originating from eloquent cortex causing no neurological deficit in experimental animals. To test the hypothesis that application of microbeams in the hippocampus, the most common source of refractory seizures, is safe and does not induce severe side effects, we used microbeams to induce transections to the...
Show moreSynchrotron-generated microplanar beams (microbeams) provide the most stereo-selective irradiation modality known today. This novel irradiation modality has been shown to control seizures originating from eloquent cortex causing no neurological deficit in experimental animals. To test the hypothesis that application of microbeams in the hippocampus, the most common source of refractory seizures, is safe and does not induce severe side effects, we used microbeams to induce transections to the hippocampus of healthy rats. An array of parallel microbeams carrying an incident dose of 600 Gy was delivered to the rat hippocampus. Immunohistochemistry of phosphorylated gamma-H2AX showed cell death along the microbeam irradiation paths in rats 48 hours after irradiation. No evident behavioral or neurological deficits were observed during the 3-month period of observation. MR imaging showed no signs of radio-induced edema or radionecrosis 3 months after irradiation. Histological analysis showed a very well preserved hippocampal cytoarchitecture and confirmed the presence of clear-cut microscopic transections across the hippocampus. These data support the use of synchrotron-generated microbeams as a novel tool to slice the hippocampus of living rats in a minimally invasive way, providing (i) a novel experimental model to study hippocampal function and (ii) a new treatment tool for patients affected by refractory epilepsy induced by mesial temporal sclerosis.
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Date Issued: 2018-01-09
Identifier: FSU_libsubv1_wos_000419659800019, 10.1038/s41598-017-18000-x
Format: Citation

Title: Grain Boundary Pop-in, Yield Point Phenomenon And Carbon Segregation In Aged Low Carbon Steel.
Creator: Shen, Zhengyan, Wang, Bilei, Liang, Gaofei, Zhang, Yunhu, Han, Ke, Song, Changjiang
Abstract/Description: Nanoindentation measurements, tensile tests, and carbon concentration analyses were conducted to study yield behaviors in as received, aged, and prestrained low carbon steel. In aged sample, steel showed both yield point phenomenon (YPP) and grain boundary (GB) pop-ins besides initial pop-in, while steels in other two states showed no YPP and only the initial pop-in. 3-dimensional atom probe (3DAP) analysis in both as-received and aged samples showed that carbon content in the matrix...
Show moreNanoindentation measurements, tensile tests, and carbon concentration analyses were conducted to study yield behaviors in as received, aged, and prestrained low carbon steel. In aged sample, steel showed both yield point phenomenon (YPP) and grain boundary (GB) pop-ins besides initial pop-in, while steels in other two states showed no YPP and only the initial pop-in. 3-dimensional atom probe (3DAP) analysis in both as-received and aged samples showed that carbon content in the matrix decreased significantly after aging treatment, which is believed to contribute to the occurrence of both YPP and GB pop-in.
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Date Issued: 2018
Identifier: FSU_libsubv1_wos_000426225900024, 10.2355/isijinternational.ISIJINT-2017-426
Format: Citation

Title: Single-cell Replication Profiling To Measure Stochastic Variation In Mammalian Replication Timing.
Creator: Dileep, Vishnu, Gilbert, David M.
Abstract/Description: Mammalian DNA replication is regulated via multi-replicon segments that replicate in a defined temporal order during S-phase. Further, early/late replication of RDs corresponds to active/inactive chromatin interaction compartments. Although replication origins are selected stochastically, variation in replication timing is poorly understood. Here we devise a strategy to measure variation in replication timing using DNA copy number in single mouse embryonic stem cells. We find that borders...
Show moreMammalian DNA replication is regulated via multi-replicon segments that replicate in a defined temporal order during S-phase. Further, early/late replication of RDs corresponds to active/inactive chromatin interaction compartments. Although replication origins are selected stochastically, variation in replication timing is poorly understood. Here we devise a strategy to measure variation in replication timing using DNA copy number in single mouse embryonic stem cells. We find that borders between replicated and unreplicated DNA are highly conserved between cells, demarcating active and inactive compartments of the nucleus. Fifty percent of replication events deviated from their average replication time by +/- 15% of S phase. This degree of variation is similar between cells, between homologs within cells and between all domains genomewide, regardless of their replication timing. These results demonstrate that stochastic variation in replication timing is independent of elements that dictate timing or extrinsic environmental variation.
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Date Issued: 2018-01-30
Identifier: FSU_libsubv1_wos_000423510600004, 10.1038/s41467-017-02800-w
Format: Citation

Title: The Ecosystem Baseline For Particle Flux In The Northern Gulf Of Mexico.
Creator: Giering, S. L. C., Yan, B., Sweet, J., Asper, V., Diercks, A., Chanton, J. P., Pitiranggon, M., Passow, U.
Abstract/Description: Response management and damage assessment during and after environmental disasters such as the Deepwater Horizon (DWH) oil spill require an ecological baseline and a solid understanding of the main drivers of the ecosystem. During the DWH event, a large fraction of the spilled oil was transported to depth via sinking marine snow, a routing of spilled oil unexpected to emergency response planners. Because baseline knowledge of particle export in the Northern Gulf of Mexico and how it varies...
Show moreResponse management and damage assessment during and after environmental disasters such as the Deepwater Horizon (DWH) oil spill require an ecological baseline and a solid understanding of the main drivers of the ecosystem. During the DWH event, a large fraction of the spilled oil was transported to depth via sinking marine snow, a routing of spilled oil unexpected to emergency response planners. Because baseline knowledge of particle export in the Northern Gulf of Mexico and how it varies spatially and temporally was limited, we conducted a detailed assessment of the potential drivers of deep (similar to 1400 m depth) particle fluxes during 2012-2016 using sediment traps at three contrasting sites in the Northern Gulf of Mexico: near the DWH site, at an active natural oil seep site, and at a site considered typical for background conditions. The DWH site, located similar to 70 km from the Mississippi River Delta, showed flux patterns that were strongly linked to the Mississippi nitrogen discharge and an annual subsequent surface bloom. Fluxes carried clear signals of combustion products, which likely originated from pyrogenic sources that were transported offshore via the Mississippi plume. The seep and reference sites were more strongly influenced by the open Gulf of Mexico, did not show a clear seasonal flux pattern, and their overall sedimentation rates were lower than those at the DWH site. At the seep site, based on polycyclic aromatic hydrocarbon data, we observed indications of three different pathways for "natural" oiled-snow sedimentation: scavenging by sinking particles at depth, weathering at the surface before incorporation into sinking particles, and entry into the food web and subsequent sinking in form of detritus. Overall, sedimentation rates at the three sites were markedly different in quality and quantity owing to varying degrees of riverine and oceanic influences, including natural seepage and contamination by combustion products.
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Date Issued: 2018-01-25
Identifier: FSU_libsubv1_wos_000423325500001, 10.1525/elementa.264
Format: Citation

Title: Impacts Of The Deepwater Horizon Oil Spill Evaluated Using An End-to-end Ecosystem Model.
Creator: Ainsworth, Cameron H., Paris, Claire B., Perlin, Natalie, Dornberger, Lindsey N., Patterson, William F., Chancellor, Emily, Murawski, Steve, Hollander, David, Daly, Kendra,...
Show moreAinsworth, Cameron H., Paris, Claire B., Perlin, Natalie, Dornberger, Lindsey N., Patterson, William F., Chancellor, Emily, Murawski, Steve, Hollander, David, Daly, Kendra, Romero, Isabel C., Coleman, Felicia, Perryman, Holly
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Abstract/Description: We use a spatially explicit biogeochemical end-to-end ecosystem model, Atlantis, to simulate impacts from the Deepwater Horizon oil spill and subsequent recovery of fish guilds. Dose-response relationships with expected oil concentrations were utilized to estimate the impact on fish growth and mortality rates. We also examine the effects of fisheries closures and impacts on recruitment. We validate predictions of the model by comparing population trends and age structure before and after the...
Show moreWe use a spatially explicit biogeochemical end-to-end ecosystem model, Atlantis, to simulate impacts from the Deepwater Horizon oil spill and subsequent recovery of fish guilds. Dose-response relationships with expected oil concentrations were utilized to estimate the impact on fish growth and mortality rates. We also examine the effects of fisheries closures and impacts on recruitment. We validate predictions of the model by comparing population trends and age structure before and after the oil spill with fisheries independent data. The model suggests that recruitment effects and fishery closures had little influence on biomass dynamics. However, at the assumed level of oil concentrations and toxicity, impacts on fish mortality and growth rates were large and commensurate with observations. Sensitivity analysis suggests the biomass of large reef fish decreased by 25% to 50% in areas most affected by the spill, and biomass of large demersal fish decreased even more, by 40% to 70%. Impacts on reef and demersal forage caused starvation mortality in predators and increased reliance on pelagic forage. Impacts on the food web translated effects of the spill far away from the oiled area. Effects on age structure suggest possible delayed impacts on fishery yields. Recovery of high-turnover populations generally is predicted to occur within 10 years, but some slower-growing populations may take 30+ years to fully recover.
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Date Issued: 2018-01-25
Identifier: FSU_libsubv1_wos_000423416600024, 10.1371/journal.pone.0190840
Format: Citation

Title: Psychometric evaluation of the multidimensional co-parenting scale for dissolved relationships.
Creator: Ferraro, A., Lucier-Greer, M., Oehme, K.
Abstract/Description: Instruments that assess parenting behavior after divorce have largely focused on the domains of general support of and conflict in co-parenting. This paper introduces and validates a measurement tool that provides a more nuanced perspective of the quality of co-parenting behaviors, the Multidimensional Co-Parenting Scale for Dissolved Relationships (MCS-DR). Participants were divorced or currently divorcing parents recruited through a Qualtrics panel (N = 569) to take a university-sponsored,...
Show moreInstruments that assess parenting behavior after divorce have largely focused on the domains of general support of and conflict in co-parenting. This paper introduces and validates a measurement tool that provides a more nuanced perspective of the quality of co-parenting behaviors, the Multidimensional Co-Parenting Scale for Dissolved Relationships (MCS-DR). Participants were divorced or currently divorcing parents recruited through a Qualtrics panel (N = 569) to take a university-sponsored, state-approved curriculum, “Successful Co-Parenting After Divorce” and respond to a series of surveys about their experiences in the divorce process. Exploratory factor analysis was used to identify the underlying factor structure of the initial measurement item pool, which consisted of 48 items. From this, a four factor model emerged, consisting of 23 items; one additional item was removed following tests of measurement equivalence as a function of gender suggesting a final measure which consisted of 22 items across the four subscales. Those subscales include: Overt Conflict, Support, Self-Controlled Covert Conflict, and Externally-Controlled Covert Conflict. Confirmatory factor analysis confirmed the four factor structure of the MCS-DR. The dimensions of Support and Overt Conflict demonstrate concurrent validity with an existing measure used in the literature on post-divorce co-parenting. Educators and clinicians may find this newly developed scale useful in helping parents identify their strengths and challenges in post-divorce functioning for the well-being of their children. Implications for the field are also discussed in relation to legislatively and judicially mandated divorce classes in many states.
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Date Issued: 2018-06-15
Identifier: FSU_libsubv1_scholarship_submission_1537804382_041a6bde, 10.1007/s10826-018-1124-2
Format: Citation

Title: Daily Air Temperature Estimation On Glacier Surfaces In The Tibetan Plateau Using Modis Lst Data.
Creator: Zhang, Hongbo, Zhang, Fan, Zhang, Guoqing, Ma, Yaoming, Yang, Kun, Ye, Ming
Abstract/Description: The MODerate resolution Imaging Spectroradiometer (MODIS) land surface temperature (LST) data have been widely used for air temperature estimation in mountainous regions where station observations are sparse. However, the performance of MODIS LST in high-elevation glacierized areas remains unclear. This study investigates air temperature estimation in glacierized areas based on ground observations at four glaciers across the Tibetan Plateau. Before being used to estimate the air temperature,...
Show moreThe MODerate resolution Imaging Spectroradiometer (MODIS) land surface temperature (LST) data have been widely used for air temperature estimation in mountainous regions where station observations are sparse. However, the performance of MODIS LST in high-elevation glacierized areas remains unclear. This study investigates air temperature estimation in glacierized areas based on ground observations at four glaciers across the Tibetan Plateau. Before being used to estimate the air temperature, MODIS LST data are evaluated at two of the glaciers, which indicates that MODIS night-time LST is more reliable than MODIS daytime LST data. Then, linear models based on each of the individual MODIS LST products from two platforms (Terra and Aqua) and two overpasses (nighttime and daytime) are built to estimate daily mean, minimum and maximum air temperatures in glacierized areas. Regional glacier surface (RGS) models (mean /-mean-square differences: 3.3, 3.0 and 4.8 degrees C for daily mean, minimum and maximum air temperatures, respectively) show higher accuracy than local non-glacier surface models (mean root-mean-square differences: 4.2, 4.7 and 5.7 degrees C). In addition, the RGS models based on MODIS night-time LST perform better to estimate daily mean, minimum and maximum air temperatures than using temperature lapse rate derived from local stations.
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Date Issued: 2018-02
Identifier: FSU_libsubv1_wos_000426960600012, 10.1017/jog.2018.6
Format: Citation

Title: Fermi Surface With Dirac Fermions In Cafeasf Determined Via Quantum Oscillation Measurements.
Creator: Terashima, Taichi, Hirose, Hishiro T., Graf, David, Ma, Yonghui, Mu, Gang, Hu, Tao, Suzuki, Katsuhiro, Uji, Shinya, Ikeda, Hiroaki
Abstract/Description: Despite the fact that 1111-type iron arsenides hold the record transition temperature of iron-based superconductors, their electronic structures have not been studied much because of the lack of high-quality single crystals. In this study, we comprehensively determine the Fermi surface in the antiferromagnetic state of CaFeAsF, a 1111 iron-arsenide parent compound, by performing quantum oscillation measurements and band-structure calculations. The determined Fermi surface consists of a...
Show moreDespite the fact that 1111-type iron arsenides hold the record transition temperature of iron-based superconductors, their electronic structures have not been studied much because of the lack of high-quality single crystals. In this study, we comprehensively determine the Fermi surface in the antiferromagnetic state of CaFeAsF, a 1111 iron-arsenide parent compound, by performing quantum oscillation measurements and band-structure calculations. The determined Fermi surface consists of a symmetry-related pair of Dirac electron cylinders and a normal hole cylinder. From analyses of quantum-oscillation phases, we demonstrate that the electron cylinders carry a nontrivial Berry phase pi. The carrier density is of the order of 10(-3) per Fe. This unusual metallic state with the extremely small carrier density is a consequence of the previously discussed topological feature of the band structure which prevents the antiferromagnetic gap from being a full gap. We also report a nearly linear-in-B magnetoresistance and an anomalous resistivity increase above about 30 T for B parallel to c, the latter of which is likely related to the quantum limit of the electron orbit. Intriguingly, the electrical resistivity exhibits a nonmetallic temperature dependence in the paramagnetic tetragonal phase ( T > 118 K), which may suggest an incoherent state. Our study provides a detailed knowledge of the Fermi surface in the antiferromagnetic state of 1111 parent compounds and moreover opens up a new possibility to explore Dirac-fermion physics in those compounds.
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Date Issued: 2018-02-01
Identifier: FSU_libsubv1_wos_000423991000001, 10.1103/PhysRevX.8.011014
Format: Citation

Title: Tennessee Williams And Italy: A Transcultural Perspective.
Creator: Gontarski, S. E.
Date Issued: 2018
Identifier: FSU_libsubv1_wos_000427360700007
Format: Citation

Title: The Influence Of Carrier Gas On Plasma Properties And Hydrogen Peroxide Production In A Nanosecond Pulsed Plasma Discharge Generated In A Water-film Plasma Reactor.
Creator: Wang, Huihui, Wandell, Robert J., Locke, Bruce R.
Abstract/Description: The influence of carrier gas (argon and helium) on the properties of a nanosecond pulsed filamentary discharge propagating along the water surface in a water film plasma reactor, and the effects of plasma properties on the formation of hydrogen peroxide (H2O2) are investigated. The plasma properties, including electron density, gas temperature, and plasma volume, and the hydrogen peroxide production rate and energy yield were measured and compared in both argon and helium discharges. The...
Show moreThe influence of carrier gas (argon and helium) on the properties of a nanosecond pulsed filamentary discharge propagating along the water surface in a water film plasma reactor, and the effects of plasma properties on the formation of hydrogen peroxide (H2O2) are investigated. The plasma properties, including electron density, gas temperature, and plasma volume, and the hydrogen peroxide production rate and energy yield were measured and compared in both argon and helium discharges. The results show that helium plasma is more diffusive compared with the argon plasma, and it has lower electron density and gas temperature but larger volume. The production rates and energy yields of hydrogen peroxide are only slightly higher in the helium plasma although the electron density is much lower. A simple mathematical model with time-dependent fast radical and electron quenching in a small film surrounding the plasma core and with lumped reaction kinetics for H2O2 formation and degradation suggests that the hydroxyl radical (center dot OH) concentration is approximately two times higher in the argon discharge, but the larger volume of the helium leads to about two times more total center dot OH in the helium with correspondingly higher energy yields. The experimental data and model imply that the H2O2 energy yield may increase at lower power (or specific energy density) for both carrier gases.
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Date Issued: 2018-03-07
Identifier: FSU_libsubv1_wos_000424898200002, 10.1088/1361-6463/aaa835
Format: Citation

Title: Natural Mentors, Social Class, And College Success.
Creator: Reynolds, John R., Parrish, Michael
Abstract/Description: Natural mentors provide advice, moral support, and assistance to adolescents who aspire to obtain a postsecondary degree, but past studies of the benefits of having an informal adult mentor have yet to resolve several issues. Our analyses of a national sample of high school graduates test three hypotheses: (H1) natural mentoring increases the odds of college attendance and completion, (H2) guidance and career advice are more important for college success than encouragement or role modeling,...
Show moreNatural mentors provide advice, moral support, and assistance to adolescents who aspire to obtain a postsecondary degree, but past studies of the benefits of having an informal adult mentor have yet to resolve several issues. Our analyses of a national sample of high school graduates test three hypotheses: (H1) natural mentoring increases the odds of college attendance and completion, (H2) guidance and career advice are more important for college success than encouragement or role modeling, and (H3) students from poor and working-class families benefit more from mentoring than students from middle- and upper-class families. Hypotheses 1 and 3 are clearly supported when examining the odds of attending college, while Hypothesis 2 was not supportedencouragement and role modeling boost attendance, not advice or practical help. None of the hypotheses is supported when predicting degree completion among those who matriculated. As natural mentors do not appreciably increase the odds of completing college, we conclude past studies have overstated the postsecondary educational benefits of natural mentors.
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Date Issued: 2018-03
Identifier: FSU_libsubv1_wos_000426605000015, 10.1002/ajcp.12209
Format: Citation

Title: Ethylene Carbonate-free Fluoroethylene Carbonate-based Electrolyte Works Better For Freestanding Si-based Composite Paper Anodes For Li-ion Batteries.
Creator: Yao, K., Zheng, J. P., Liang, R.
Abstract/Description: Fluoroethylene carbonate (FEC)-based electrolytes using FEC as the co-solvent (50 wt%) are investigated and compared with the electrolyte using FEC as the additive (10 wt%) for freestanding Si-carbon nanotubes (CNTs) composite paper anodes for Li-ion batteries. The ethylene carbonate (EC)-free FEC-based electrolyte is found to achieve higher specific capacity and better capacity retention in terms of long-term cycling. After 500 cycles, the capacity retention of the cell using diethyl...
Show moreFluoroethylene carbonate (FEC)-based electrolytes using FEC as the co-solvent (50 wt%) are investigated and compared with the electrolyte using FEC as the additive (10 wt%) for freestanding Si-carbon nanotubes (CNTs) composite paper anodes for Li-ion batteries. The ethylene carbonate (EC)-free FEC-based electrolyte is found to achieve higher specific capacity and better capacity retention in terms of long-term cycling. After 500 cycles, the capacity retention of the cell using diethyl carbonate (DEC)-FEC (1:1 w/w) is increased by 88% and 60% compared to the cells using EC-DEC-FEC (45:45:10 w/w/w) and EC-FEC (1:1 w/w), respectively. Through SEM-EDX and XPS analyses, a possible reaction route of formation of fluorinated semicarbonates and polyolefins from FEC is proposed. The inferior cell performance related to the EC-containing electrolytes is likely due to the formation of more polyolefins, which do not favor Li ion migration.
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Date Issued: 2018-03-31
Identifier: FSU_libsubv1_wos_000428009400019, 10.1016/j.jpowsour.2018.02.013
Format: Citation

Title: How the ACRL Research as Inquiry Frame Informed Library Instruction at a College of Medicine.
Creator: Epstein, Susan, Rosasco, Robyn, Heasley, Erica
Abstract/Description: In recent years, librarians have begun to consult the Association of College and Research Libraries’ (ACRL) Framework for Information Literacy for Higher Education to inform their library instruction and respond effectively to an ever-changing information ecosystem. This article describes an academic medical library’s experience with framing scholarly research as a discovery process of asking questions and finding answers; in essence, following the basic premise of the ACRL’s “Research as...
Show moreIn recent years, librarians have begun to consult the Association of College and Research Libraries’ (ACRL) Framework for Information Literacy for Higher Education to inform their library instruction and respond effectively to an ever-changing information ecosystem. This article describes an academic medical library’s experience with framing scholarly research as a discovery process of asking questions and finding answers; in essence, following the basic premise of the ACRL’s “Research as Inquiry” frame. The authors’ development of instructional sessions for undergraduate interdisciplinary medical students has also encouraged their integration of Framework concepts with medical education standards and previous active-learning initiatives.
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Date Issued: 2018-10-16
Identifier: FSU_libsubv1_scholarship_submission_1541191437_6a4d17de, 10.1080/0194262X.2018.1530630
Format: Citation

Title: Micro-architecture Embedding Ultra-thin Interlayer To Bond Diamond And Silicon Via Direct Fusion.
Creator: Kim, Jong Cheol, Kim, Jongsik, Xin, Yan, Lee, Jinhyung, Kim, Young-Gyun, Subhash, Ghatu, Singh, Rajiv K., Arjunan, Arul C., Lee, Haigun
Abstract/Description: The continuous demand on miniaturized electronic circuits bearing high power density illuminates the need to modify the silicon-on-insulator-based chip architecture. This is because of the low thermal conductivity of the few hundred nanometer-thick insulator present between the silicon substrate and active layers. The thick insulator is notorious for releasing the heat generated from the active layers during the operation of devices, leading to degradation in their performance and thus...
Show moreThe continuous demand on miniaturized electronic circuits bearing high power density illuminates the need to modify the silicon-on-insulator-based chip architecture. This is because of the low thermal conductivity of the few hundred nanometer-thick insulator present between the silicon substrate and active layers. The thick insulator is notorious for releasing the heat generated from the active layers during the operation of devices, leading to degradation in their performance and thus reducing their lifetime. To avoid the heat accumulation, we propose a method to fabricate the silicon-on-diamond (SOD) microstructure featured by an exceptionally thin silicon oxycarbide interlayer (similar to 3 nm). While exploiting the diamond as an insulator, we employ spark plasma sintering to render the silicon directly fused to the diamond. Notably, this process can manufacture the SOD microarchitecture via a simple/rapid way and incorporates the ultra-thin interlayer for minute thermal resistance. The method invented herein expects to minimize the thermal interfacial resistance of the devices and is thus deemed as a breakthrough appealing to the current chip industry. Published by AIP Publishing.
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Date Issued: 2018-05-21
Identifier: FSU_libsubv1_wos_000433140900009, 10.1063/1.5030580
Format: Citation

Title: Implementation Planning Of A Mhealth Vaccination Tool: A Workflow Study In Four Pediatric Clinics.
Creator: Staras, Stephanie, Rich, Natalie, Samarah, Esaa, Thompson, Lindsay, Muszynski, Michael, Shenkman, Elizabeth
Date Issued: 2018-03-28
Identifier: FSU_libsubv1_wos_000428652000056
Format: Citation

Title: Preparation Of Encapsulated Sn-cu@graphite Composite Anode Materials For Lithium-ion Batteries.
Creator: Watson, Venroy, Yeboah, Yaw, Weatherspoon, Mark, Zheng, Jim, Kalu, Egwu Eric
Abstract/Description: Electroless encapsulation of graphite particles with copper-tin alloy (Sn-Cu@graphite) is demonstrated as a feasible anode preparation method that is cost effective and provides both high cyclability and reversible capacity. Heat treatment of the electroless composites at 200 degrees C yielded Sn-Cu@graphite anode composites with a 20 wt.% Sn loading, specific surface area of 22.5 m(2)/g and a 1st discharge capacity of 1074 mAh/g at 0.2C rate. In contrast, the graphite substrate particles...
Show moreElectroless encapsulation of graphite particles with copper-tin alloy (Sn-Cu@graphite) is demonstrated as a feasible anode preparation method that is cost effective and provides both high cyclability and reversible capacity. Heat treatment of the electroless composites at 200 degrees C yielded Sn-Cu@graphite anode composites with a 20 wt.% Sn loading, specific surface area of 22.5 m(2)/g and a 1st discharge capacity of 1074 mAh/g at 0.2C rate. In contrast, the graphite substrate particles used for the encapsulation has a surface area of 2.34 m(2)/g) and a 1st cycle discharge capacity of 327 mAh/g at 0.2 C rate. At the 300th cycle, these capacities decreased to similar to 400 mAh/g and 208 mAh/g for the SnCu@graphite and graphite substrate, respectively. Above 300 cycles, the electroless encapsulated SnCu@graphite anode maintained a capacity higher than that determined experimentally and theoretically for graphite. The electrochemical impedance and cyclic voltammetric results demonstrate that the electroless encapsulated Sn-Cu@graphite anode has very low resistance and high reversible redox reactions. The higher capacity and long term cycling (> 300 cycles) achieved with the electroless composite anodes are attributed to the buffering effect of the electroless Cu in the Sn-Cu alloy encapsulating graphite particles, Sn-Cu@graphite's higher surface area (22.5 m(2)/g), and curvature of the graphite particles. The electroless encapsulated Sn-Cu graphite composite anode materials with extended cycling have potential application for the anode of Li-ion battery.
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Date Issued: 2018-08-01
Identifier: FSU_libsubv1_wos_000441821400059, 10.20964/2018.08.39
Format: Citation

Title: Extracranial Metastatic Burden In Extensive-stage Small Cell Lung Cancer: Implications For Prophylactic Cranial Irradiation.
Creator: Oliver, Daniel E., Donnelly, Olivia G., Grass, G. Daniel, Naghavi, Arash O., Yang, George Q., Dilling, Thomas J., Perez, Bradford A.
Abstract/Description: Background: Patients with extensive-stage small cell lung cancer (ES-SCLC) often develop brain metastases. There is significant controversy regarding the benefit of prophylactic cranial irradiation (PCI) for patients with ES-SCLC. Our objective is to identify ES-SCLC patients who might be most likely to benefit from PCI. Methods: We retrospectively reviewed 173 patients with ES-SCLC treated between 2010-2015. Of these, 117 patients were initially diagnosed without brain metastases and...
Show moreBackground: Patients with extensive-stage small cell lung cancer (ES-SCLC) often develop brain metastases. There is significant controversy regarding the benefit of prophylactic cranial irradiation (PCI) for patients with ES-SCLC. Our objective is to identify ES-SCLC patients who might be most likely to benefit from PCI. Methods: We retrospectively reviewed 173 patients with ES-SCLC treated between 2010-2015. Of these, 117 patients were initially diagnosed without brain metastases and received systemic chemotherapy. Following exclusion of patients who received PCI and less than 2 cycles of platinum doublet therapy, 93 patients remained. Patient records were reviewed for clinical and radiographic features previously identified as relevant risk factors. Primary outcome was brain metastasis-free survival (BMFS). Kaplan-Meier analysis, log-rank tests and Cox multivariate models were used to compare outcomes. Results: Median follow-up was 10.7 months (range, 3-58 months). Thirty-eight (40.9%) patients developed brain metastases. Three or more metastatic sites was associated with inferior BMFS on univariable (1-year estimate 43.8% vs. 61.3%; P=0.020) and multivariable (MVA) analysis (hazard ratio (HR) 2.33, 95% CI: 1.08-5.01; P=0.03). Conclusions: Our results suggest that extracranial metastatic burden is associated with an increased risk for brain metastases in patients with ES-SCLC. As there is no clear standard regarding delivery of PCI in this patient population, utilizing the number of metastatic disease sites as a clinical indicator may help to improve selection of patients who benefit from PCI.
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Date Issued: 2018-07-01
Identifier: FSU_libsubv1_wos_000440380200071, 10.21037/jtd.2018.06.92
Format: Citation

Title: Social Media Use And Cyberbullying Perpetration: A Longitudinal Analysis.
Creator: Barlett, Christopher P., Gentile, Douglas A., Chng, Grace, Li, Dongdong, Chamberlin, Kristina
Abstract/Description: Social networking (e.g., blogging and social networking website use) frequency among adolescents has increased exponentially in the last decade. An unfortunate by-product of increased communication via the Internet is cyberbullying; however, there is a paucity of longitudinal research exploring the relationships between social network use and cyberbullying in an adolescent sample. The current study used a three-wave longitudinal study of over 3000 (at Wave 1) Singaporean youth to examine...
Show moreSocial networking (e.g., blogging and social networking website use) frequency among adolescents has increased exponentially in the last decade. An unfortunate by-product of increased communication via the Internet is cyberbullying; however, there is a paucity of longitudinal research exploring the relationships between social network use and cyberbullying in an adolescent sample. The current study used a three-wave longitudinal study of over 3000 (at Wave 1) Singaporean youth to examine whether the relationship between Wave 1 social network use and Wave 3 cyberbullying perpetration was mediated by an increase in Wave 2 development of positive cyberbullying attitudes. Results using structural equation modeling showed support for this hypotheses: Wave 1 social networking use predicted Wave 2 positive cyberbullying attitudes 2 years later. Finally, Wave 2 cyberbullying attitudes predicted Wave 3 cyberbullying perpetration 1 year later. Overall, these results suggest that social networking can be used to harm others through the development of positive cyberbullying attitudes-a link that has received very little empirical attention.
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Date Issued: 2018-09-01
Identifier: FSU_libsubv1_wos_000444690200010, 10.1089/vio.2017.0047
Format: Citation

Title: Evaluating The Service Life Of Thermoplastic Pavement Markings: Stochastic Approach.
Creator: Chimba, Deo, Kidando, Emmanuel, Onyango, Mbakisya
Abstract/Description: The study applied the Markov chain (MC) model that uses a transition matrix to transmit the probability of monitored pavement markings being in one service life state then changing into another service life state over a time interval. The service life prediction by MC models were then compared with those from linear models, testing if there were any clear advantages of using one model over the other in terms of predicting longevity of the marking retroreflectivity. The retroreflectivity data...
Show moreThe study applied the Markov chain (MC) model that uses a transition matrix to transmit the probability of monitored pavement markings being in one service life state then changing into another service life state over a time interval. The service life prediction by MC models were then compared with those from linear models, testing if there were any clear advantages of using one model over the other in terms of predicting longevity of the marking retroreflectivity. The retroreflectivity data were collected by monitoring the coefficient of dry retroreflective luminance for 2 years using a handheld retroreflectometer. Using the MC model, the study found that the pavement marking retroreflectivity (PMR) degradation follows an exponential curve trend whereby the degradation rates decrease as the time increases. Significant differences were found in the deterioration of the markings based on the colors (white or yellow) and line type (center, lane line, or edge line). White thermoplastic edge lines on two-lane roadways were found to have a better performance (low deterioration rates) compared with the same lines on four-lane highways. Based on the transition probability matrix (TPM), it was observed that retroreflectivity is in an excellent or good state for a short period of time(54% probability) but is in a fair or poor state for a longer time (92% probability), suggesting the trend has a higher degradation rate at the beginning and a lower rate near the failure state. Keeping the minimum failure states at 150 and 100 mcd/m(2)/lx for white and yellow markings, respectively, the service life of white markings was found to be approximately 4 years (49.5 months) and it was found to be about 2.4 years (29 months) for yellow markings. The MC model findings were compared with those obtained through linear regression, which showed that white thermoplastic pavement markings take approximately 3.5 years (42 months) to deteriorate to failure state level, while yellow thermoplastics take about 2.1 years (25 months). The study concluded that there is a clear difference between the prediction using MC models compared with linear models, with MC models being more cost effective in terms of maintenance and replacement scheduling due to a longer life prediction. (C) 2018 American Society of Civil Engineers.
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Date Issued: 2018-09-01
Identifier: FSU_libsubv1_wos_000440541000005, 10.1061/JPEODX.0000055
Format: Citation

Title: A Second Specimen Of Citipati Osmolskae Associated With A Nest Of Eggs From Ukhaa Tolgod, Omnogov Aimag, Mongolia.
Creator: Norell, Mark A., Balanoff, Amy M., Barta, Daniel E., Erickson, Gregory M.
Abstract/Description: Adult dinosaurs preserved attending their nests in brooding positions are among the rarest vertebrate fossils. By far the most common occurrences are members of the dinosaur group Oviraptorosauria. The first finds of these were specimens recovered from the Djadokhta Formation at the Mongolian locality of Ukhaa Tolgod and the Chinese locality of Bayan Mandahu. Since the initial discovery of these specimens, a few more occurrences of nesting oviraptors have been found at other Asian localities....
Show moreAdult dinosaurs preserved attending their nests in brooding positions are among the rarest vertebrate fossils. By far the most common occurrences are members of the dinosaur group Oviraptorosauria. The first finds of these were specimens recovered from the Djadokhta Formation at the Mongolian locality of Ukhaa Tolgod and the Chinese locality of Bayan Mandahu. Since the initial discovery of these specimens, a few more occurrences of nesting oviraptors have been found at other Asian localities. Here we report on a second nesting oviraptorid specimen (IGM 100/1004) sitting in a brooding position atop a nest of eggs from Ukhaa Tolgod, Omnogov, Mongolia. This is a large specimen of the ubiquitous Ukhaa Tolgod taxon Citipati osmolskae. It is approximately 11% larger based on humeral length than the original Ukhaa Tolgod nesting Citipati osmolskae specimen (IGM 100/979), yet eggshell structure and egg arrangement are identical. No evidence for colonial breeding of these animals has been recovered. Reexamination of another "nesting" oviraptorosaur, the holotype of Oviraptor philoceratops (AMNH FARB 6517) indicates that in addition to the numerous partial eggs associated with the original skeleton that originally led to its referral as a protoceratopsian predator, there are the remains of a tiny theropod. This hind limb can be provisionally assigned to Oviraptoridae. It is thus at least possible that some of the eggs associated with the holotype had hatched and the perinates had not left the nest.
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Date Issued: 2018-04-26
Identifier: FSU_libsubv1_wos_000430953800001
Format: Citation

Title: The Magic Of Improbable Appendages: Deer Antler Objects In The Archaeological Record Of The American South.
Creator: Peres, Tanya M., Altman, Heidi
Abstract/Description: In the American South white-tailed deer remains are recovered in abundance from late prehistoric archaeological sites and have been used to identify numerous social and cultural phenomena including status based differences in food consumption, feasting, inter-site transport of foodstuffs, and regional variation in subsistence strategies. Meat, marrow, bone, antler, and hide were important physical contributions of deer to the daily lives of southeastern native peoples. However, deer also play...
Show moreIn the American South white-tailed deer remains are recovered in abundance from late prehistoric archaeological sites and have been used to identify numerous social and cultural phenomena including status based differences in food consumption, feasting, inter-site transport of foodstuffs, and regional variation in subsistence strategies. Meat, marrow, bone, antler, and hide were important physical contributions of deer to the daily lives of southeastern native peoples. However, deer also play(ed) an important role in self-identity and social structure (Deer clan). In this paper we bring together multiple lines of evidence to offer a nuanced interpretation of white-tailed deer (Odocoileus virginianus) antler objects recovered from Native American archaeological sites in the pre-European Southeastern United States in the traditional homelands of the Cherokees of the American South. We review the importance of the culturally appropriate interactions with deer as taught in deer hunting lore and taboos recorded in ethnographic and ethnohistoric sources. With this understanding, we then identify the material manifestations of deer hunting amulets from several archaeological sites in our study area. Ultimately our study of antler objects shows that combining indigenous knowledge with material studies gives us new insights into how humans perceived and interacted with the animals that lived in their shared environment, and fosters new interpretations of material culture.
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Date Issued: 2018-08-01
Identifier: FSU_libsubv1_wos_000444281500086, 10.1016/j.jasrep.2017.10.028
Format: Citation

Title: Using Crash Modification Factors To Appraise The Safety Effects Of Pedestrian Countdown Signals For Drivers.
Creator: Kitali, Angela E., Sando, Thobias, Castro, Angelique, Kobelo, Doreen, Mwakalonge, Judith
Abstract/Description: Although pedestrian countdown signals (PCSs) are meant for pedestrians, they give cues to drivers on the remaining amount of green as the timer counts down. This study focuses on the evaluation of safety effectiveness of PCSs to drivers in the cities of Jacksonville and Gainesville, Florida, using the before-after study with the empirical Bayes method. This analysis explored 110 intersections with PCSs and their respective 93 comparison sites. The findings indicate that PCSs significantly...
Show moreAlthough pedestrian countdown signals (PCSs) are meant for pedestrians, they give cues to drivers on the remaining amount of green as the timer counts down. This study focuses on the evaluation of safety effectiveness of PCSs to drivers in the cities of Jacksonville and Gainesville, Florida, using the before-after study with the empirical Bayes method. This analysis explored 110 intersections with PCSs and their respective 93 comparison sites. The findings indicate that PCSs significantly improve driver safety by 8.8% reduction in total crashes, 8.0% in rear-end and 7.1% in property-damage-only crashes, where both of these results were significant at the 95% confidence level. Results for angle crashes as well as fatal and injury crashes were not significant at the 95% confidence level. Also discussed in this study are the crash modification functions developed to show the relationship between the estimated crash modification factors and total entering traffic volume at the intersection. In summary, the results suggest the usefulness of PCSs for drivers. (C) 2018 American Society of Civil Engineers.
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Date Issued: 2018-05-01
Identifier: FSU_libsubv1_wos_000427966500001, 10.1061/JTEPBS.0000130
Format: Citation

Title: Health Divided: Public Health And Individual Medicine In The Making Of The Modern American State.
Creator: Kitchens, Carl
Date Issued: 2018-05-01
Identifier: FSU_libsubv1_wos_000431386100059
Format: Citation

Title: The Group Theory Of Parties: Identity Politics, Party Stereotypes, And Polarization In The 21st Century.
Creator: Ahler, Douglas J.
Abstract/Description: An emerging narrative contends that 2016 was significant for bridging identity politics and American party conflict. This narrative misses a fundamental truth: for ordinary Americans, partisan identity has always been grounded in their orientations toward groups in society. The group theory of parties holds that citizens evaluate political parties according to their social stereotypes of Democrats and Republicans, ultimately identifying (or not) with a party that jives with their own self...
Show moreAn emerging narrative contends that 2016 was significant for bridging identity politics and American party conflict. This narrative misses a fundamental truth: for ordinary Americans, partisan identity has always been grounded in their orientations toward groups in society. The group theory of parties holds that citizens evaluate political parties according to their social stereotypes of Democrats and Republicans, ultimately identifying (or not) with a party that jives with their own self-image. In this essay, I review existing research and summarize several original studies suggesting that citizens' beliefs about party composition affect their feelings toward Democrats and Republicans. Americans tend to hold shockingly erroneous beliefs about the degree to which stereotypical groups compose the parties - for example, that 38% of Republicans belong to the economic "1%" - and correcting social stereotypes about the out-party reduces polarization between rank-and-file party supporters. Most studies discussed in this essay were conducted before Donald Trump became a candidate, suggesting that 2016 was not the year that identity politics hijacked the parties, but rather the year in which the implicit group basis for mass partisanship became baldly explicit.
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Date Issued: 2018-04-01
Identifier: FSU_libsubv1_wos_000435382500002, 10.1515/for-2018-0002
Format: Citation

Title: Cell Adhesion and Proliferation on the “Living” Surface of a Polyelectrolyte Multilayer.
Creator: Arias, Carlos B., Surmaitis, Richard L., Schlenoff, Joseph B.
Abstract/Description: The adhesion of living eukaryotic cells to a substrate, one of the most complex problems in surface science, requires adsorption of extracellular proteins such as fibronectin. Thin films of polyelectrolyte complex made layer-by-layer (polyelectrolyte multilayers or PEMUs) offer a high degree of control of surface charge and composition - interconnected and essential variables for protein adhesion. Fibroblasts grown on multilayers of poly(styrene sulfonate), PSS, and poly...
Show moreThe adhesion of living eukaryotic cells to a substrate, one of the most complex problems in surface science, requires adsorption of extracellular proteins such as fibronectin. Thin films of polyelectrolyte complex made layer-by-layer (polyelectrolyte multilayers or PEMUs) offer a high degree of control of surface charge and composition - interconnected and essential variables for protein adhesion. Fibroblasts grown on multilayers of poly(styrene sulfonate), PSS, and poly(diallyldimethylammonium), PDADMA, with increasing thickness exhibit good adhesion until the 12th layer of polyelectrolyte has been added, whereupon there is a sudden transition to nonadhesive behavior. This sharp change is due to the migration of excess positive charge to the surface – a previously unrecognized property of PEMUs. Precise radiotracer assays of adsorbed 125I-albumin, show how protein adsorption is related to multilayer surface charge. With more negative surface charge density from the sulfonates of PSS, more albumin adsorbs to the surface. However, a loosely-held or “soft corona” exchanges with serum protein under the Vroman effect, which is correlated with poor cell adhesion. A comprehensive view of cell adhesion highlights the central role of robust protein adhesion, which is required before any secondary effects of matrix stiffness on cell fate can come into play.
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Date Issued: 2016-05-18
Identifier: FSU_libsubv1_scholarship_submission_1540238895_2ac07ed1, 10.1021/acs.langmuir.6b00784
Format: Citation

Title: Measurements Of Mass-dependent Azimuthal Anisotropy In Central P Plus Au, D + Au, And He-3 + Au Collisions At Root S(nn)=200 Gev.
Creator: Adare, A., Aidala, C., Ajitanand, N. N., Akiba, Y., Alfred, M., Andrieux, V., Apadula, N., Asano, H., Azmoun, B., Babintsev, V., Bagoly, A., Bai, M., Bandara, N. S., Bannier, B....
Show moreAdare, A., Aidala, C., Ajitanand, N. N., Akiba, Y., Alfred, M., Andrieux, V., Apadula, N., Asano, H., Azmoun, B., Babintsev, V., Bagoly, A., Bai, M., Bandara, N. S., Bannier, B., Barish, K. N., Bathe, S., Bazilevsky, A., Beaumier, M., Beckman, S., Belmont, R., Berdnikov, A., Berdnikov, Y., Blau, D. S., Boer, M., Bok, J. S., Boyle, K., Brooks, M. L., Bryslawskyj, J., Bumazhnov, V., Campbell, S., Roman, V. Canoa, Cervantes, R., Chen, C.-H., Chi, C. Y., Chiu, M., Choi, I. J., Choi, J. B., Chujo, T., Citron, Z., Connors, M., Cronin, N., Csanad, M., Csorgo, T., Danley, T. W., Datta, A., Daugherity, M. S., David, G., Deblasio, K., Dehmelt, K., Denisov, A., Deshpande, A., Desmond, E. J., Dion, A., Diss, P. B., Dixit, D., Do, J. H., Drees, A., Drees, K. A., Durham, J. M., Durum, A., Enokizono, A., En'yo, H., Esumi, S., Fadem, B., Fan, W., Feege, N., Fields, D. E., Finger, M., Finger, M., Fokin, S. L., Frantz, J. E., Franz, A., Frawley, A. D., Fukuda, Y., Gal, C., Gallus, P., Garg, P., Ge, H., Giordano, F., Glenn, A., Goto, Y., Grau, N., Greene, S., Perdekamp, M. Grosse, Gunji, T., Guragain, H., Hachiya, T., Haggerty, J. S., Hahn, K., Hamagaki, H., Hamilton, H. F., Han, S. Y., Hanks, J., Hasegawa, S., Haseler, T. O. S., Hashimoto, K., He, X., Hemmick, T. K., Hill, J. C., Hill, K., Hodges, A., Hollis, R. S., Homma, K., Hong, B., Hoshino, T., Hotvedt, N., Huang, J., Huang, S., Imai, K., Imrek, J., Inaba, M., Iordanova, A., Isenhower, D., Ivanishchev, D., Jacak, B., Jezghani, M., Ji, Z., Jia, J., Jiang, X., Johnson, B. M., Jorjadze, V., Jouan, D., Jumper, D. S., Kanda, S., Kang, J. H., Kapukchyan, D., Karthas, S., Kawall, D., Kazantsev, A., Key, J. A., Khachatryan, V., Khanzadeev, A., Kim, C., Kim, D. J., Kim, E.-J., Kim, G. W., Kim, M., Kim, M. H., Kimelman, B., Kincses, D., Kistenev, E., Kitamura, R., Klatsky, J., Kleinjan, D., Kline, P., Koblesky, T., Komkov, B., Kotov, D., Kudo, S., Kurgyis, B., Kurita, K., Kurosawa, M., Kwon, Y., Lacey, R., Lajoie, J. G., Lebedev, A., Lee, S., Lee, S. H., Leitch, M. J., Leung, Y. H., Lewis, N. A., Li, X., Lim, S. H., Liu, M. X., Loggins, V.-R., Lokos, S., Lovasz, K., Lynch, D., Majoros, T., Makdisi, Y., Makek, M., Manion, A., Manko, V., Mannel, E., Masuda, H., McCumber, M., McGaughey, P. L., McGlinchey, D., McKinney, C., Meles, A., Mendoza, M., Metzger, W. J., Mignerey, A. C., Mihalik, D. E., Milov, A., Mishra, D. K., Mitchell, J. T., Mitsuka, G., Miyasaka, S., Mizuno, S., Mohanty, A. K., Montuenga, P., Moon, T., Morrison, D. P., Morrow, S., Moukhanova, T., Murakami, T., Murata, J., Mwai, A., Nagai, K., Nagashima, K., Nagashima, T., Nagle, J. L., Nagy, M., Nakagawa, I., Nakagomi, H., Nakano, K., Nattrass, C., Netrakanti, P. K., Niida, T., Nishimura, S., Nouicer, R., Novak, T., Novitzky, N., Nyanin, A. S., O'Brien, E., Ogilvie, C. A., Koop, J. D. Orjuela, Osborn, J. D., Oskarsson, A., Ottino, G. J., Ozawa, K., Pak, R., Pantuev, V., Papavassiliou, V., Park, J. S., Park, S., Pate, S. F., Patel, M., Peng, J.-C., Peng, W., Perepelitsa, D., Perera, G. D. N., Peressounko, D. Yu, PerezLara, C. E., Perry, J., Petti, R., Phipps, M., Pinkenburg, C., Pinson, R., Pisani, R. P., Pun, A., Purschke, M. L., Radzevich, P., Rak, J., Ramson, B. J., Ravinovich, I., Read, K. F., Reynolds, D., Riabov, V., Riabov, Y., Richford, D., Rinn, T., Rolnick, S. D., Rosati, M., Rowan, Z., Rubin, J. G., Runchey, J., Safonov, A. S., Sahlmueller, B., Saito, N., Sakaguchi, T., Sako, H., Samsonov, V., Sarsour, M., Sato, K., Sato, S., Schaefer, B., Schmoll, B. K., Sedgwick, K., Seidl, R., Sen, A., Seto, R., Sett, P., Sexton, A., Sharma, D., Shein, I., Shibata, T.-A., Shigaki, K., Shimomura, M., Shioya, T., Shukla, P., Sickles, A., Silva, C. L., Silvermyr, D., Singh, B. K., Singh, C. P., Singh, V., Skoby, M. J., Slunecka, M., Snowball, M., Soltz, R. A., Sondheim, W. E., Sorensen, S. P., Sourikova, I., Stankus, P. W., Stepanov, M., Stoll, S. P., Sugitate, T., Sukhanov, A., Sumita, T., Sun, J., Sziklai, J., Takeda, A., Taketani, A., Tanida, K., Tannenbaum, M. J., Tarafdar, S., Taranenko, A., Tarnai, G., Tieulent, R., Timilsina, A., Todoroki, T., Tomasek, M., Towell, C. L., Towell, R., Towell, R. S., Tserruya, I., Ueda, Y., Ujvari, B., van Hecke, H. W., Vazquez-Carson, S., Velkovska, J., Virius, M., Vrba, V., Vukman, N., Wang, X. R., Wang, Z., Watanabe, Y., Watanabe, Y. S., Wei, F., White, A. S., Wong, C. P., Woody, C. L., Wysocki, M., Xia, B., Xu, C., Xu, Q., Xue, L., Yalcin, S., Yamaguchi, Y. L., Yamamoto, H., Yanovich, A., Yin, P., Yoo, J. H., Yoon, I., Yu, H., Yushmanov, I. E., Zajc, W. A., Zelenski, A., Zharko, S., Zhou, S., Zou, L.
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Abstract/Description: We present measurements of the transverse-momentum dependence of elliptic flow upsilon(2) for identified pions and (anti)protons at midrapidity (vertical bar eta vertical bar < 0.35), in 0%-5% central p + Au and He-3 + Au collisions at ,root s(NN) = 200 GeV. When taken together with previously published measurements in d + Au collisions at root s(NN) = 200 GeV, the results cover a broad range of small-collision-system multiplicities and intrinsic initial geometries. We observe a clear mass...
Show moreWe present measurements of the transverse-momentum dependence of elliptic flow upsilon(2) for identified pions and (anti)protons at midrapidity (vertical bar eta vertical bar < 0.35), in 0%-5% central p + Au and He-3 + Au collisions at ,root s(NN) = 200 GeV. When taken together with previously published measurements in d + Au collisions at root s(NN) = 200 GeV, the results cover a broad range of small-collision-system multiplicities and intrinsic initial geometries. We observe a clear mass-dependent splitting of upsilon(2) (p(T)) in d + Au and He-3 + Au collisions, just as in large nucleus-nucleus (A + A) collisions, and a smaller splitting in p + Au collisions. Both hydrodynamic and transport model calculations successfully describe the data at low p(T) (<1.5 GeV/c), but fail to describe various features at higher p(T). In all systems, the upsilon(2) values follow an approximate quark-number scaling as a function of the hadron transverse kinetic energy per constituent quark (KET/n(q)), which was also seen previously in A + A collisions.
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Date Issued: 2018-06-11
Identifier: FSU_libsubv1_wos_000434763400006, 10.1103/PhysRevC.97.064904
Format: Citation

Title: Anisotropic Antiferromagnetic Order In The Spin-orbit Coupled Trigonal-lattice Ca2sr2iro6.
Creator: Sheng, Jieming, Ye, Feng, Hoffmann, Christina, Cooper, Valentino R., Okamoto, Satoshi, Terzic, Jasminka, Zheng, Hao, Zhao, Hengdi, Cao, G.
Abstract/Description: We used single-crystal x-ray and neutron diffraction to investigate the crystal and magnetic structures of trigonal lattice iridate Ca2Sr2IrO6. The crystal structure is determined to be R (3) over bar with two distinct Ir sites. The system exhibits long-range antiferromagnetic order below T-N = 13.1 K. The magnetic wave vector is identified as (0,0.5,1) with ferromagnetic coupling along the a axis and antiferromagnetic correlation along the b axis. Spins align dominantly within the basal...
Show moreWe used single-crystal x-ray and neutron diffraction to investigate the crystal and magnetic structures of trigonal lattice iridate Ca2Sr2IrO6. The crystal structure is determined to be R (3) over bar with two distinct Ir sites. The system exhibits long-range antiferromagnetic order below T-N = 13.1 K. The magnetic wave vector is identified as (0,0.5,1) with ferromagnetic coupling along the a axis and antiferromagnetic correlation along the b axis. Spins align dominantly within the basal plane along the [1,2,0] direction and tilt 34 degrees toward the c axis. The ordered moment is 0.66(3) mu(B) /Tr, larger than other iridates where iridium ions form corner- or edge-sharing IrO6 octahedral networks. The tilting angle is reduced to approximate to 19 degrees when a magnetic field of 4.9 T is applied along the c axis. Density functional theory calculations confirm that the experimentally determined magnetic configuration is the most probable ground state with an insulating gap similar to 0.5 eV.
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Date Issued: 2018-06-11
Identifier: FSU_libsubv1_wos_000434761900004, 10.1103/PhysRevB.97.235116
Format: Citation

Title: A Self-adaptive Evolutionary Algorithm For The Berth Scheduling Problem: Towards Efficient Parameter Control.
Creator: Dulebenets, Maxim A., Kavoosi, Masoud, Abioye, Olumide, Pasha, Junayed
Abstract/Description: Since ancient times, maritime transportation has played a very important role for the global trade and economy of many countries. The volumes of all major types of cargo, which are transported by vessels, has substantially increased in recent years. Considering a rapid growth of waterborne trade, marine container terminal operators should focus on upgrading the existing terminal infrastructure and improving operations planning. This study aims to assist marine container terminal operators...
Show moreSince ancient times, maritime transportation has played a very important role for the global trade and economy of many countries. The volumes of all major types of cargo, which are transported by vessels, has substantially increased in recent years. Considering a rapid growth of waterborne trade, marine container terminal operators should focus on upgrading the existing terminal infrastructure and improving operations planning. This study aims to assist marine container terminal operators with improving the seaside operations and primarily focuses on the berth scheduling problem. The problem is formulated as a mixed integer linear programming model, minimizing the total weighted vessel turnaround time and the total weighted vessel late departures. A self-adaptive Evolutionary Algorithm is proposed to solve the problem, where the crossover and mutation probabilities are encoded in the chromosomes. Numerical experiments are conducted to evaluate performance of the developed solution algorithm against the alternative Evolutionary Algorithms, which rely on the deterministic parameter control, adaptive parameter control, and parameter tuning strategies, respectively. Results indicate that all the considered solution algorithms demonstrate a relatively low variability in terms of the objective function values at termination from one replication to another and can maintain the adequate population diversity. However, application of the self-adaptive parameter control strategy substantially improves the objective function values at termination without a significant impact on the computational time.
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Date Issued: 2018-07-01
Identifier: FSU_libsubv1_wos_000440205200012, 10.3390/a11070100
Format: Citation

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