bluuebunny/crossref_metadata_2025_split huggingface dataset:
RETHINKING MODELS OF MINORITY POLITICAL PARTICIPATION
Authors: Kim Sunmin 
Published: November 2019

AbstractPolitical science research has repeatedly identified a strong correlation between high socio-economic status and political participation, but this finding has not been as robust for racial and ethnic minorities. As a response, the literature on minority political participation has produced a series of different models for different groups by adding group-specific variables to the standard SES model. In assigning a single model per group, however, the literature tends to overlook intra-group differences as well as inter-group commonalities, thereby effectively reifying the concept of race and ethnicity. Using survey data from Los Angeles, this article develops a different approach aimed at detecting intra-group differences as well as inter-group commonalities through a recognition of political “styles.” First, using latent class analysis (LCA), I identify a set of recurring configurations of individual dispositions (education, political knowledge…) and political acts (voting, protest…) that define different political styles. Then I examine the distribution of these political styles across racial and ethnic groups. The results reveal three novel findings that were invisible in the previous studies: 1) all groups feature a considerable degree of intra-group difference in political styles; 2) each group retains other political styles that cannot be captured by a single model; and 3) there are commonalities of political styles that cut across racial and ethnic boundaries. Overall, this article presents a model for quantitative analysis of race and ethnicity that simultaneously captures intra-group differences and inter-group commonalities.
Political Accountability, Legislator Gender, and the Status Quo Bias
Authors: Sheffer Lior 
Published: November 2019

AbstractA large body of literature in political science documents differences between elected men and women in their substantive policy preferences, representation styles, and effectiveness as legislators. We know far less about whether female and male representatives respond differently to being held politically accountable for their decisions. Although it is a difficult concept to evaluate empirically with incumbents, this absence of research is nevertheless surprising considering the central role of accountability in legislative behavior and the nonelite evidence that women and men respond differently to attributions of accountability. I provide evidence for the existence of such an accountability gender gap in an experiment with 377 incumbent legislators in three countries, in which they were asked to choose between economic policy plans alternately presented as the status quo, with varying levels of implied task accountability. Elected women and men reacted significantly differently when the political accountability levels of the task increased: female politicians exhibited a stronger preference for policies presented as the status quo, whereas male politicians were more likely to abandon the status quo and favor change. This pattern is unique to politicians and is not observed in nonelites. I discuss processes that motivate this divergence and the implications for research on gender and political representation.
Determination of weed hosts of soybean cyst nematode in South Dakota
Authors: Basnet Pawan , Clay Sharon A. , Byamukama Emmanuel 
Published: November 2019

AbstractSoybean cyst nematode (SCN) causes over $1.2 billion in revenue loss annually in the United States and consistently ranks as the most threatening pathogen for soybean. SCN weed hosts have been documented in other states in the eastern Corn Belt, but very little work has been done in the midwestern Corn Belt. To determine alternative SCN weed hosts in South Dakota, 670 whole weed root samples comprising 63 weed species were collected from 48 SCN-positive fields in 13 counties during fall 2016 and spring 2017. Among the 63 weed species, 12 contained SCN juveniles and 7 were confirmed hosts of SCN based on the completion of the SCN life cycle in greenhouse studies. Ranking of female index (FI) for the weed hosts were purple deadnettle (FI = 34.6) > field pennycress (FI = 26.9) > common mallow (FI = 2.04) > shepherd’s purse (FI = 1.89) > white clover (FI = 1.86) > Canada thistle (FI = 1.24) > common cocklebur (FI = 1.10). These results indicate that some weeds can support SCN, and therefore a proactive weed management approach should be employed for fields infested with SCN.
Toward a Dynamical Foundation for Organized Convection Parameterization in GCMs
Authors: Moncrieff Mitchell W. 
Published: November 2019

AbstractA dynamically based parameterization of organized moist convection in the form of multiscale coherent structures and slantwise layer overturning principles provides upscale heat and counter‐gradient momentum transports distinct from diffusive down‐gradient mixing by unorganized cumulus. Implementation of a minimalist version of this new parameterization in a state‐of‐the‐art global climate model (GCM) improves the Madden‐Julian Oscillation and convectively coupled waves and generates large‐scale patterns of tropical precipitation consistent with Tropical Rainfall Measuring Mission satellite measurements. A question on the need to parameterize mesoscale convective organization to mitigate mean state biases is addressed.
Feedback of Mixing to ENSO Phase Change
Authors: Warner Sally J. , Moum James N. 
Published: November 2019

AbstractA decade‐long time series of mixing in the equatorial Pacific cold tongue at 0°, 140°W reveals how mixing changes on El Niño–Southern Oscillation (ENSO) time scales. Separated into phase transitions to and from the neutral state, we find that mixing is most intense during the perturbation from the neutral state to peak La Niña when sea surface temperature cools and weakest during the perturbation from the neutral state to peak El Niño when sea surface temperature warms. Intermediate levels of mixing occur during relaxations back to the neutral state. Heating and cooling rates due to the divergence of turbulence heat flux across the mixed layer, where the net surface heat flux is the value of the turbulence heat flux at the sea surface, have the same amplitude and sign as sea surface heating and cooling rates during ENSO phase transitions. We suggest that the basic Bjerknes feedback must include mixing.
Dipolarization Fronts: Tangential Discontinuities? On the Spatial Range of Validity of the MHD Jump Conditions
Authors: Schmid D. , Volwerk M. , Plaschke F. , Nakamura R. , Baumjohann W. , Wang G.Q. , Wu M.Y. , Zhang T.L. 
Published: November 2019

AbstractMagnetotail dipolarization fronts (DFs) are referred as the sharp increase of the northward magnetic field component, embedded in bursts of fast earthward moving plasma flows, so called bursty bulk flows. Earlier studies often considered DFs as tangential discontinuities (TDs), which can be understood as thin vertical current layers of earthward moving flux tubes, so called dipolarzing flux bundles (DFBs), which separate the ambient plasma sheet plasma from the low entropy plasma within the DFB. Here we present a statistical study of 23 DFs observed by the Magnetospheric Multiscale mission during 2017 and 2018 when the apogee was at 25 RE in the magnetotail. We perform a test of the Walén relation to distinguish whether the observed DFs have rather a TD or rotational discontinuity character and evaluate the plasma flow across the DFs in detail. The results show that on MHD large scales, all 23 DFs can be considered as TD like, but sometimes may have a significant normal plasma flow across it: for 16 events (∼70%), the plasma flows mainly tangential to the DFs, while for seven events (∼30%), the plasma flows mainly across the DFs. Based on the findings present in this study, we further hypothesize that the DF structure becomes more distorted and unstable in a (locally) more dipolarized background magnetic field region, which may additionally facilitate the plasma flow across the front.
Understanding and Harnessing the Dual Electrostatic/Electromagnetic Character of Plasma Turbulence in the Near‐Earth Space Environment
Authors: Ganguli Gurudas , Crabtree Chris , Fletcher Alex C. , Rudakov Leonid , Richardson Andrew S. , Huba Joseph , Siefring Carl , Amatucci William , Lewis Charlton D. 
Published: November 2019

AbstractThe ability to morph electrostatic plasma turbulence into electromagnetic has promising applications, including the possibility of actively influencing the near‐Earth plasma state, aka the space weather. This dual (electrostatic/electromagnetic) nature is a fundamental property of plasma turbulence, which has not been well explored but could explain many phenomena including the formation of a resonant cavity that can amplify the turbulence energy. The upcoming Space Measurement of A Rocket‐Released Turbulence (SMART) mission is designed to understand the evolution of plasma turbulence and the nonlocal consequences of its dual nature. This includes the flow of energy into all possible wavelengths, as well as the transport of energy over a large geographical volume. The resulting energy redistribution in both waves and particles in an extended geographical volume creates a unique electromagnetic environment, which is important for space weather.
Simulation of Remanent, Transient, and Induced FORC Diagrams for Interacting Particles With Uniaxial, Cubic, and Hexagonal Anisotropy
Authors: Harrison Richard J. , Zhao Xiang , Hu Pengxiang , Sato Tetsuro , Heslop David , Muxworthy Adrian R. , Oda Hirokuni , Kuppili Venkata S. C. , Roberts Andrew P. 
Published: November 2019

AbstractThe diagnostic power of first‐order reversal curve (FORC) diagrams has recently been enhanced by an extended measurement protocol that yields three additional FORC‐like diagrams: the remanent (remFORC), induced (iFORC), and transient (tFORC) diagrams. Here, we present micromagnetic simulations using this extended protocol, including numerical predictions of remFORC, iFORC, and tFORC signatures for particle ensembles relevant to rock magnetism. Simulations are presented for randomly packed single‐domain (SD) particles with uniaxial, cubic, and hexagonal anisotropy, and for chains of uniaxial SD particles. Noninteracting particles have zero tFORC, but distinct remFORC and iFORC signals, that provide enhanced discrimination between uniaxial, cubic, and hexagonal anisotropy types. Increasing interactions lessen the ability to discriminate between uniaxial and cubic anisotropy but reproduces a change in the pattern of positive and negative iFORC signals observed for SD‐dominated versus vortex‐dominated samples. Interactions in SD particles lead to the emergence of a bi‐lobate tFORC distribution, which is related to formation of flux‐closure in super‐vortex states. A predicted iFORC signal associated with collapsed chains is observed in experimental data and may aid magnetofossil identification in sediments. Asymmetric FORC and FORC‐like distributions for hexagonal anisotropy are explained by the availability of multiple easy axes within the basal plane. A transition to uniaxial switching occurs below a critical value of the out‐of‐plane/in‐plane anisotropy ratio, which may allow FORC diagrams to provide insight into the stress state of hexagonal minerals, such as hematite.
An Assessment and Improvement of Satellite Ocean Color Algorithms for the Tropical Pacific Ocean
Authors: Pittman Nicholas A. , Strutton Peter G. , Johnson Robert , Matear Richard J. 
Published: November 2019

AbstractThe tropical Pacific Ocean is a globally significant region of climate‐driven biogeochemical variability. Satellite ocean color algorithms have been used for over 20 years, providing a substantial historical record of global ocean chlorophyll‐a variability. Current chlorophyll algorithms perform better in the tropical Pacific than for the globe. Nevertheless, improvements can be made to produce a robust historical record of chlorophyll variability, which is essential to accurately identify ocean‐atmosphere carbon fluxes and long‐term trends in ocean productivity. We use a large in situ chlorophyll database to tune empirical ocean color algorithms to reduce bias in the equatorial Pacific. Traditional band ratio chlorophyll algorithms (OCx) perform adequately but exhibit errors at low chlorophyll concentrations. A new algorithm, the Ocean Color Index (OCI; Hu et al., 2012, https://doi.org/10.1029/2011JC007395), is more effective at calculating low chlorophyll concentrations in the mesotrophic tropical Pacific Ocean. Existing ocean color algorithms underestimate tropical Pacific chlorophyll by 5.8%, 14%, and 2% for three satellite ocean color sensors: SeaWiFS, MODIS‐Aqua, and MERIS. In this paper, we develop regionally tuned sensor‐specific coefficients and blending windows between the OCI to OCx algorithms to reduce systematic biases in the tropical Pacific. We assess cross‐sensor consistency to produce robust 21‐year time series trends. These updated estimates increase chlorophyll concentrations in open water and decrease around island and warm‐pool regions, with implications for our understanding of El Niño‐Southern Oscillation driven carbon fluxes and net primary productivity.
Coordination of cohabiting phage elements supports bacteria–phage cooperation
Authors: Argov Tal , Sapir Shai Ran , Pasechnek Anna , Azulay Gil , Stadnyuk Olga , Rabinovich Lev , Sigal Nadejda , Borovok Ilya , Herskovits Anat A. 
Published: November 2019

AbstractBacterial pathogens often carry multiple prophages and other phage-derived elements within their genome, some of which can produce viral particles in response to stress. Listeria monocytogenes 10403S harbors two phage elements in its chromosome, both of which can trigger bacterial lysis under stress: an active prophage (ϕ10403S) that promotes the virulence of its host and can produce infective virions, and a locus encoding phage tail-like bacteriocins. Here, we show that the two phage elements are co-regulated, with the bacteriocin locus controlling the induction of the prophage and thus its activity as a virulence-associated molecular switch. More specifically, a metalloprotease encoded in the bacteriocin locus is upregulated in response to stress and acts as an anti-repressor for CI-like repressors encoded in each phage element. Our results provide molecular insight into the phenomenon of polylysogeny and its intricate adaptation to complex environments.
Feature selection with the Fisher score followed by the Maximal Clique Centrality algorithm can accurately identify the hub genes of hepatocellular carcinoma
Authors: Li Chengzhang , Xu Jiucheng 
Published: November 2019

AbstractThis study aimed to select the feature genes of hepatocellular carcinoma (HCC) with the Fisher score algorithm and to identify hub genes with the Maximal Clique Centrality (MCC) algorithm. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis was performed to examine the enrichment of terms. Gene set enrichment analysis (GSEA) was used to identify the classes of genes that are overrepresented. Following the construction of a protein-protein interaction network with the feature genes, hub genes were identified with the MCC algorithm. The Kaplan–Meier plotter was utilized to assess the prognosis of patients based on expression of the hub genes. The feature genes were closely associated with cancer and the cell cycle, as revealed by GO, KEGG and GSEA enrichment analyses. Survival analysis showed that the overexpression of the Fisher score–selected hub genes was associated with decreased survival time (P < 0.05). Weighted gene co-expression network analysis (WGCNA), Lasso, ReliefF and random forest were used for comparison with the Fisher score algorithm. The comparison among these approaches showed that the Fisher score algorithm is superior to the Lasso and ReliefF algorithms in terms of hub gene identification and has similar performance to the WGCNA and random forest algorithms. Our results demonstrated that the Fisher score followed by the application of the MCC algorithm can accurately identify hub genes in HCC.
Reduction in Left Ventricular Ejection Fraction is Associated with Subsequent Cardiac Events in Outpatients with Chronic Heart Failure
Authors: Okuhara Yoshitaka , Asakura Masanori , Orihara Yoshiyuki , Morisawa Daisuke , Matsumoto Yuki , Naito Yoshiro , Tsujino Takeshi , Ishihara Masaharu , Masuyama Tohru 
Published: November 2019

AbstractLeft ventricular ejection fraction (LVEF) is critical for determining the prognosis and treatment of patients with heart failure (HF). However, the influence of serial LVEF changes in patients with stable chronic HF (CHF) has not yet been completely investigated. We analyzed data of 263 outpatients with CHF from the J-MELODIC study cohort and evaluated the frequency of cardiac events. We stratified patients into tertiles based on the relative difference in LVEF in 1 year and that at baseline. We found a significant difference in the cardiac event rate among the three groups (log-rank test, p = 0.042). We identified a relative 11% LVEF reduction as the optimal cutoff value based on the receiver operating characteristics analysis. LVEF (OR, 1.04; 95% CI, 1.01–1.07; p = 0.015) and E/e′ (OR, 1.06; 95% CI, 1.01–1.12; p = 0.023) at baseline were predictors of >11% LVEF reduction. After adjusting the variables including age and sex, >11% LVEF reduction was an independent predictor of subsequent cardiac events (HR, 5.79; 95% CI, 2.49–13.2; p < 0.001). In conclusion, patients with 1-year relative >11% LVEF reduction may have subsequent worsening outcomes. Such patients should be carefully followed-up as high risk population for development of cardiac events.
Tai Chi Chuan vs General Aerobic Exercise in Brain Plasticity: A Multimodal MRI Study
Authors: Cui Lei , Yin HengChan , Lyu ShaoJun , Shen QiQi , Wang Yuan , Li XiuJuan , Li Jing , Li YunFei , Zhu LiNa 
Published: November 2019

AbstractThis study contrasted the impact of Tai Chi Chuan and general aerobic exercise on brain plasticity in terms of an increased grey matter volume and functional connectivity during structural magnetic resonance imaging (sMRI) and resting-state functional magnetic resonance imaging (rs-fMRI), explored the advantages of Tai Chi Chuan in improving brain structure and function. Thirty-six college students were grouped into Tai Chi Chuan (Bafa Wubu of Tai Chi), general aerobic exercise (brisk walking) and control groups. Individuals were assessed with a sMRI and rs-fMRI scan before and after an 8-week training period. The VBM toolbox was used to conduct grey matter volume analyses. The CONN toolbox was used to conduct several seed-to-voxel functional connectivity analyses. We can conclude that compared with general aerobic exercise, eight weeks of Tai Chi Chuan exercise has a stronger effect on brain plasticity, which is embodied in the increase of grey matter volume in left middle occipital gyrus, left superior temporal gyrus and right middle temporal gyrus and the enhancement of functional connectivity between the left middle frontal gyrus and left superior parietal lobule. These findings demonstrate the potential and advantages of Tai Chi Chuan exercises in eliciting brain plasticity.
Photocatalytic proximity labelling of MCL-1 by a BH3 ligand
Authors: Beard Hester A. , Hauser Jacob R. , Walko Martin , George Rachel M. , Wilson Andrew J. , Bon Robin S. 
Published: November 2019

AbstractLigand-directed protein labelling allows the introduction of diverse chemical functionalities onto proteins without the need for genetically encoded tags. Here we report a method for the rapid labelling of a protein using a ruthenium-bipyridyl (Ru(II)(bpy)3)-modified peptide designed to mimic an interacting BH3 ligand within a BCL-2 family protein-protein interactions. Using sub-stoichiometric quantities of (Ru(II)(bpy)3)-modified NOXA-B and irradiation with visible light for 1 min, the anti-apoptotic protein MCL-1 can be photolabelled with a variety of functional tags. In contrast with previous reports on Ru(II)(bpy)3-mediated photolabelling, tandem mass spectrometry experiments reveal that the labelling site is a cysteine residue of MCL-1. MCL-1 can be labelled selectively in mixtures with other proteins, including the structurally related BCL-2 member, BCL-xL. These results demonstrate that proximity-induced photolabelling is applicable to interfaces that mediate protein-protein interactions, and pave the way towards future use of ligand-directed proximity labelling for dynamic analysis of the interactome of BCL-2 family proteins.
Finite Difference Analysis of Time-Dependent Viscous Nanofluid Flow Between Parallel Plates
Authors: Ahmad Salman , Hayat T. , Alsaedi A. , Khan Z. H. , Waleed Ahmed Khan M. 
Published: November 2019

Abstract
This article computes effect of uniform magnetic field on nanofluid flow filling porous medium inside parallel sheets. Darcy’s law is used to characterize porous medium. Flow is caused by stretching of the lower sheet. The governing systems are computed using Finite difference technique. This scheme is used due to its more general and powerful nature to solve nonlinear problems. Results are obtained and discussed graphically. Nusselt number, skin friction, streamlines, velocity and temperature are emphasized.
Fractional Angular Momentum of an Atom on a Noncommutative Plane*
Authors: Jing Jian , Zhang Qiu-Yue , Wang Qing , Long Zheng-Wen , Dong Shi-Hai 
Published: November 2019

Abstract

The mechanism of obtaining the fractional angular momentum by employing a trapped atom which possesses a permanent magnetic dipole moment in the background of two electric fields is reconsidered by using an alternative method. Then, we generalize this model to a noncommutative plane. We show that there are two different mechanisms, which include cooling down the atom to the negligibly small kinetic energy and modulating the density of electric charges to the critical value to get the fractional angular momentum theoretically.
Numerical Study on the Whole Process of Fireball Evolution in Strong Explosion*
Authors: Xia Yin , Xue Chuang , Li Chen-Guang , Meng Guang-Wei , Zhao Ying-Kui , Yan Jun , Li Bai-Wen 
Published: November 2019

AbstractWith the actual mean free path for radiation in air and a simplified nuclear device, a one-dimension simulation research on fireball phenomenon in a sea level atmosphere is carried out based on the multi-group radiation hydrodynamic codes (RDMG). It is shown that our theoretical calculations can describe the whole process of the fireball evolution for strong explosions from the early X-ray expansion stage to the shock wave propagation stage. The radius of the shock wave and the brightness of the fireball are in good agreement with the experimental results. The whole thermal radiation power curve of the fireball evolution for strong atmospheric explosion at sea level is plotted for the first time. The impact of radiation opacity of the nuclear device material on the early fireball phenomenon is also studied. It is found that trajectories of the radiation fronts and case shocks change with the opacity of equivalent device material. From our simulations, we find that only the early fireball depends on the details of the nuclear device, and after the formation of main shock, the evolution is determined by the properties of hot air for strong atmospheric explosion.