bluuebunny/crossref_metadata_2025_split huggingface dataset:
Policy Dialogue: Racial Segregation in America's Schools
Authors: McClellan Cara , Delmont Matthew 
Published: February 2023

AbstractAmerica's schools are more segregated today than they were three decades ago. After initial progress in the wake of the Supreme Court's 1954 ruling in Brown v. Board of Education—further bolstered by the 1964 Civil Rights Act, as well as by several other rulings by the court—the nation's schools began a process of resegregation in the early 1990s. White resistance, reversals by the court, and growing residential segregation have ensured that many young people attend school with classmates from similar racial and class backgrounds. As a recent report from the UCLA's Civil Rights Project found, the average White student attends a school in which 69 percent of students are White, the average Latinx student attends a school in which 55 percent of students are Latinx, and the average Black student attends a school in which 47 percent of students are Black. Segregation is a fact of life in both the North and the South, in urban and rural communities, in red states and in blue states.For this Policy Dialogue, HEQ's editors asked Cara McClellan and Matthew Delmont to discuss the segregation of K-12 schools by race. How, we wanted to know, has the past shaped the present and constrained the future? How are present-day efforts responding to that past and challenging the structures and cultures that reinforce racial segregation? What might the future hold? Cara McClellan is director of the Advocacy for Racial and Civil Justice Clinic at the University of Pennsylvania's Carey Law School, where she is also an associate professor of practice. Prior to this role, she served as assistant counsel at the NAACP Legal Defense and Educational Fund, where she represented students and families in cases such as Sheff v. O'Neill. Matthew Delmont is the Sherman Fairchild Distinguished Professor of History at Dartmouth College. His work focuses on African American history and the history of civil rights, and he is the author of several books including Why Busing Failed: Race, Media, and the National Resistance to School Desegregation and, most recently, Half American: The Epic Story of African Americans Fighting World War II at Home and Abroad.HEQ Policy Dialogues are, by design, intended to promote an informal, free exchange of ideas between scholars. At the end of the exchange, we offer a list of references for readers who wish to follow up on sources relevant to the discussion.
Targeting burrows improves detection in giant pangolin Smutsia gigantea camera-trap surveys
Authors: Matthews Naomi , Nixon Stuart , von Hardenberg Achaz , Isoke Sam , Geary Matthew 
Published: February 2023

AbstractThe Endangered giant pangolin Smutsia gigantea is rare and elusive across its Central African range. Because of its solitary and nocturnal nature, the species is difficult to study and so its ecology is little known. Pangolins are considered the most trafficked mammals in the world. Therefore, confirming presence accurately and monitoring trends in distribution and abundance are essential to inform and prioritize conservation efforts. Camera traps are popular tools for surveying rare and cryptic species. However, non-targeted camera-trap surveys yield low camera-trapping rates for pangolins. Here we use camera-trap data from surveys conducted within three protected areas in Uganda to test whether targeted placement of cameras improves giant pangolin detection probability in occupancy models. The results indicate that giant pangolin detection probability is highest when camera traps are targeted on burrows. The median number of days from camera deployment to first giant pangolin detection event was 12, with the majority of events captured within 32 days from deployment. The median interval between giant pangolin events at a camera-trap site was 33 days. We demonstrate that camera-trap surveys can be designed to improve the detection of giant pangolins and we outline a set of recommendations to maximize the effectiveness of efforts to survey and monitor the species.
Voter responses to female candidates' voice pitch: experimental evidence from Japan
Authors: Bowern Claire , Kage Rieko , Rosenbluth Frances , Tanaka Seiki 
Published: February 2023

AbstractPoliticians' voice pitch is known to affect voters' evaluation of the candidates in the US. But to what extent is this true outside of the American context? To address this question, we conducted an original survey experiment in Japan. Our findings are threefold. First, in contrast to previous studies, voters in Japan do not systematically prefer lower-pitched over higher-pitched female politicians. Second, our findings suggest heterogeneity in the effect of voice pitch by voters' gender – while Japanese women are indifferent as to female candidates' pitch levels, men are more likely to prefer female candidates who speak at lower pitch. Third, preliminary analyses reveal limited evidence that female candidates' political experience conditions the effect of voice pitch over voters' willingness to vote for that candidate. Our findings suggest that lowering pitch is likely to increase female candidates' electoral prospects by attracting male voters without backlash from female voters.
On impact of largest claims reinsurance treaties on the ceding company’s loss reserve
Authors: Atatalab Fatemeh , Payandeh Najafabadi Amir T 
Published: February 2023

AbstractThis article examines the impact of the largest claims reinsurance treaties on loss reserve of the ceding company. The largest claims reinsurance, known as LCR, and ECOMOR reinsurance treaties are considered to be the two most appropriate reinsurance treaties for large or catastrophe claims. Then, it studies the impact of such treaties on loss reserves. Through a simulation study, it shown that, under a more general situation, the LCR treaty can be a more efficient (in some sense, see below) treaty than the ECOMOR treaty for the ceding company.
Joni Mitchell's Urges for Going, 1965–67: Coffeehouses, Counterculture, and Care
Authors: Behan Adam 
Published: February 2023

AbstractJoni Mitchell's life was completely transformed in 1965–67: She became pregnant, was abandoned by the child's father, gave birth to her daughter, placed her baby for adoption, married and subsequently divorced Chuck Mitchell, and moved between several cities in North America. In this article, I center this often overlooked period of Joni's life—which she herself has referred to as “this three-year period of childhood's end”—and move away from the usual focus on her studio albums. I contextualize this discussion within 1960s counterculture and examine how these turbulent changes are refracted through her music making, specifically through a selection of early recordings of her song “Urge for Going.” In so doing, I seek alternatives to the prevalent and influential theories of musical persona in popular music studies, arguing instead for the merits of an approach which strives for an intellectual disposition of care.
Multipoint Observations of Dispersive Scale Alfvénic Field‐Line Resonances Associated With Substorm Auroral Beads
Authors: Hull Arthur J. , Chaston Christopher C. , Damiano Peter A. , Frey Harald U. , Wing Simon 
Published: February 2023

AbstractWe present a case study of the field‐aligned current (FAC) systems that transpire within the high‐altitude auroral acceleration region of an “auroral bead” initiated double oval substorm observed on 23 February 2001 by the Cluster fleet. Conjunctive Cluster measurements and auroral images from IMAGE reveal that auroral bead current system formation and evolution is a multi‐scale, injection‐mediated process. The FACs at large scales vary on substorm evolution time scales (∼minutes) in response to the injection and evolution of hotter denser magnetospheric plasma. Embedded within the large‐scale FACs are intense short‐scale (≲ few 10s of km) currents comprising dispersive scale Alfvén wave (DAW) fluctuations. The DAWs are a complex mixture of ingoing and reflected components that regularly interfere to form a broad spectrum of kinetic (dispersive) scale Alfvénic field‐line resonances (KFLRs). The Alfvénic currents appear as a nested series of upward and downward FAC densities with amplitudes reaching a few 100 nA/m2. Energized field‐aligned or counterstreaming electrons near keV energies and below are observed with parallel skews that vary in concert with variations in the DAW current sense. Positive correlations between DAW electric field energy densities and the energies of energized H+, He+, and O+ outflow are observed, indicative of ion energization within the DAW fields. Due to their L‐shell location (L ∼5.8–7.0) and associations with injections, the KFLRs are interpreted as the high‐altitude auroral zone analog of KFLRs observed in the equatorial inner magnetosphere.
New Insights Into Crustal Deformation of the Indonesia–Australia–New Guinea Collision Zone From a Broad‐Scale Kinematic Model
Authors: Zhao Siyuan , McClusky Simon , Cummins Phil R. , Miller Meghan S. , Nugroho Hendro 
Published: February 2023

AbstractThe Indonesia‐Australia‐New Guinea collision zone comprises a complex system of tectonic blocks whose relative motion accommodates convergence of the Sunda Block, Pacific, Australian, and Philippine Sea plates. Previous studies have considered either the western or eastern ends of this system, in eastern Indonesia and Papua New Guinea, respectively. However, these studies had limited ability to characterize either the kinematics of the central part of the system or transitions in tectonic regime across it. In this study, we perform a simultaneous inversion of 492 earthquake slip vectors and 267 GPS velocities to quantify the block movement spanning the Sunda‐Banda Arc, Western New Guinea, and Papua New Guinea. Our best‐fitting kinematic block model comprises 23 elastic blocks, for which we estimate the rotation rates and block boundary slip rates. We show how the Cenderawasih Bay sphenochasm was likely formed by a combination of both rotations (2.82 ± 0.11°/Myr anticlockwise) of the Bird's Head Block and southwest‐directed convergence (39.9 ± 1.7 mm/yr) along the Lowlands fault. Our estimated relative slip vectors across the New Guinea Fold‐and‐Thrust Belt indicate a transition in the tectonic regime of the block boundary from predominately thrust faulting at its western segment, with a convergence rate up to 19.5 ± 0.6 mm/yr, to predominately sinistral motion in the center segment with slip rate ∼7 mm/yr, and returning to thrust in the eastern segment with a convergence rate up to 9.0 ± 0.5 mm/yr, implying the combined effect of multiple driving mechanisms.
Vertically Resolved Pelagic Particle Biomass and Size Structure Across a Continental Shelf Under the Influence of a Western Boundary Current
Authors: Schilling Hayden T. , Everett Jason D. , Schaeffer Amandine , Hinchliffe Charles , Yates Peter , Baird Mark E. , Suthers Iain M. 
Published: February 2023

AbstractContinental shelves are key to societal interactions with the oceans, supporting >90% of the world's fisheries through highly productive ecosystems. Previous research has shown that phytoplankton biomass is generally higher on the inner continental shelves, often due to increased nutrient inputs from upwelling or coastal run‐off. However, consistency in observed vertical and horizontal gradients (in abundance, biomass or size) of larger particulates, including zooplankton, on continental shelves has not been established. Using an optical plankton counter and CTD mounted on an undulating towed body, we present high‐resolution vertically resolved profiles of pelagic particle size structure across a continental shelf. Biomass was highest inshore, declining with distance from shore and with depth in the top 100 m of the water column, although the presence of frontal zones can alter this pattern. In the region adjacent to the East Australian Current (EAC), uplift generated by either the EAC interacting with the continental slope or upwelling‐favorable winds, correlated with smaller geometric mean sizes and steeper size spectrum slopes, particularly in the presence of frontal features. South of the EAC separation, the continental shelf water mass was more homogenous but still displayed the same horizontal and vertical patterns in particulate biomass and mean size. By combining our observations in a global comparison, we demonstrate consistent particulate distributions on continental shelves where the inner shelf has higher biomass with a steeper size spectrum slope compared to offshore. The highly productive inner shelf supports zooplankton communities vital to temperate ecosystems and coastal fisheries, through their consistently high biomass.
Understanding the Natural Variability of Still Water Levels in the San Francisco Bay Over the Past 500 yr: Implications for Future Coastal Flood Risk
Authors: Mukhopadhyay Sudarshana , Leung Meredith , Cagigal Laura , Kucharski John , Ruggiero Peter , Steinschneider Scott 
Published: February 2023

AbstractIncreasing exposure to coastal flood hazards will potentially induce an enormous socio‐economic toll on vulnerable communities. To accurately characterize the hazard, we must consider both natural water level variability and climate change‐induced sea‐level rise. In this study, we develop a paleo‐proxy‐based reconstruction of coastal flood events over the last 500 yr to capture natural water level variability and superimpose that reconstruction onto expected sea‐level rise to explore interannual and multidecadal variability in plausible future coastal flood risk. We first develop reconstructions of leading principal components (PCs) of sea surface temperature anomalies from 1500 CE onwards, using tree‐ring, coral, and sclerosponge chronology‐based El Niño Southern Oscillation reconstructions as predictors in a wavelet autoregression model. These reconstructions of PCs are then used in a stochastic water level emulator to develop ensemble simulations of hourly still water levels (SWLs) in the San Francisco Bay. The emulator accounts for multiple relevant processes, including monthly mean sea level (MMSL) anomalies, storm surge, and tide, all varying at different timescales. Accounting for natural variability in water levels over 1500–2000 CE increases coastal flood risk beyond that suggested by instrumental records alone. When superimposed on 0.22 m of sea‐level rise (approximately the amount experienced over the previous century), the simulations show that while high tides and large storm surges cause the smaller extreme SWLs, the larger extreme SWLs occur during concurrent high MMSL, high tides, and significant storm surges. Our findings thus highlight the need to consider natural water level variability for coastal adaptation and planning.
Sensitivity of Real‐Time Forecast for Typhoons Around Korea to Cumulus and Cloud Microphysics Schemes
Authors: Park Jinyoung , Moon Jihong , Cho Woojin , Cha Dong‐Hyun , Lee Myong‐In , Chang Eun‐Chul , Kim Joowan , Park Sang‐Hun , An Jooneun 
Published: February 2023

AbstractIn numerical weather prediction models, the typhoon track and intensity forecast performances are highly sensitive to physics parameterization schemes. To investigate the impact of physics parameterization schemes on the real‐time short‐term forecasts, we simulated six typhoons which directly/indirectly affected the South Korea region in recent years using the Weather Research and Forecasting (WRF) model. Three cumulus parameterization schemes (CPSs) of Kain‐Fritsch (KF), Betts‐Miller‐Janjić (BMJ), modified Tiedtke (TDK), and two cloud microphysics parameterization schemes (MPSs) of WRF‐single‐moment‐microphysics class 6 (WSM6), Predicted Particle Properties (P3) 1‐category were selected for the sensitivity experiment. The results showed that there was a significant difference in simulated typhoon track and intensity performances depending on the physics schemes. On average, the typhoon forecast performances were improved when applying the KF scheme for CPS and WSM6 scheme for MPS in our experimental setup. The BMJ‐applied runs showed the worst performances, which simulated westward shifted typhoon tracks compared to other runs. Overall, the typhoon track and intensity spreads tended to be more sensitive to CPSs and MPSs, respectively. We conducted additional sensitivity experiments using the BMJ scheme with modified reference and temperature profiles. The result showed that the overactivity of the BMJ scheme at low latitudes was reasonably reduced, leading to the improved simulation of typhoons and synoptic fields.
TRPV1 regulates ApoE4-disrupted intracellular lipid homeostasis and decreases synaptic phagocytosis by microglia
Authors: Wang Chenfei , Lu Jia , Sha Xudong , Qiu Yu , Chen Hongzhuan , Yu Zhihua 
Published: February 2023

AbstractAlthough the ε4 allele of the apolipoprotein E (ApoE4) gene has been established as a genetic risk factor for many neurodegenerative diseases, including Alzheimer’s disease, the mechanism of action remains poorly understood. Transient receptor potential vanilloid 1 (TRPV1) was reported to regulate autophagy to protect against foam cell formation in atherosclerosis. Here, we show that ApoE4 leads to lipid metabolism dysregulation in microglia, resulting in enhanced MHC-II-dependent antigen presentation and T-cell activation. Lipid accumulation and inflammatory reactions were accelerated in microglia isolated from TRPV1flox/flox; Cx3cr1cre-ApoE4 mice. We showed that metabolic boosting by treatment with the TRPV1 agonist capsaicin rescued lipid metabolic impairments in ApoE4 neurons and defects in autophagy caused by disruption of the AKT-mTOR pathway. TRPV1 activation with capsaicin reversed ApoE4-induced microglial immune dysfunction and neuronal autophagy impairment. Capsaicin rescued memory impairment, tau pathology, and neuronal autophagy in ApoE4 mice. Activation of TRPV1 decreased microglial phagocytosis of synapses in ApoE4 mice. TRPV1 gene deficiency exacerbated recognition memory impairment and tau pathology in ApoE4 mice. Our study suggests that TRPV1 regulation of lipid metabolism could be a therapeutic approach to alleviate the consequences of the ApoE4 allele.
Efficient dispersion modeling in optical multimode fiber
Authors: Lee Szu-Yu , Parot Vicente J. , Bouma Brett E. , Villiger Martin 
Published: February 2023

AbstractDispersion remains an enduring challenge for the characterization of wavelength-dependent transmission through optical multimode fiber (MMF). Beyond a small spectral correlation width, a change in wavelength elicits a seemingly independent distribution of the transmitted field. Here we report on a parametric dispersion model that describes mode mixing in MMF as an exponential map and extends the concept of principal modes to describe the fiber’s spectrally resolved transmission matrix (TM). We present computational methods to fit the model to measurements at only a few, judiciously selected, discrete wavelengths. We validate the model in various MMF and demonstrate an accurate estimation of the full TM across a broad spectral bandwidth, approaching the bandwidth of the best-performing principal modes, and exceeding the original spectral correlation width by more than two orders of magnitude. The model allows us to conveniently study the spectral behavior of principal modes, and obviates the need for dense spectral measurements, enabling highly efficient reconstruction of the multispectral TM of MMF.
Structural inequities contribute to racial/ethnic differences in neurophysiological tone, but not threat reactivity, after trauma exposure
Authors: Harnett Nathaniel G. , Fani Negar , Carter Sierra , Sanchez Leon D. , Rowland Grace E. , Davie William M. , Guzman Camilo , Lebois Lauren A. M. , Ely Timothy D. , van Rooij Sanne J. H. , Seligowski Antonia V. , Winters Sterling , Grasser Lana R. , Musey Paul I. , Seamon Mark J. , House Stacey L. , Beaudoin Francesca L. , An Xinming , Zeng Donglin , Neylan Thomas C. , Clifford Gari D. , Linnstaedt Sarah D. , Germine Laura T. , Bollen Kenneth A. , Rauch Scott L. , Haran John P. , Storrow Alan B. , Lewandowski Christopher , Hendry Phyllis L. , Sheikh Sophia , Jones Christopher W. , Punches Brittany E. , Swor Robert A. , Hudak Lauren A. , Pascual Jose L. , Harris Erica , Chang Anna M. , Pearson Claire , Peak David A. , Merchant Roland C. , Domeier Robert M. , Rathlev Niels K. , Bruce Steven E. , Miller Mark W. , Pietrzak Robert H. , Joormann Jutta , Barch Deanna M. , Pizzagalli Diego A. , Harte Steven E. , Elliott James M. , Kessler Ronald C. , Koenen Karestan C. , McLean Samuel A. , Jovanovic Tanja , Stevens Jennifer S. , Ressler Kerry J. 
Published: February 2023

AbstractConsiderable racial/ethnic disparities persist in exposure to life stressors and socioeconomic resources that can directly affect threat neurocircuitry, particularly the amygdala, that partially mediates susceptibility to adverse posttraumatic outcomes. Limited work to date, however, has investigated potential racial/ethnic variability in amygdala reactivity or connectivity that may in turn be related to outcomes such as post-traumatic stress disorder (PTSD). Participants from the AURORA study (n = 283), a multisite longitudinal study of trauma outcomes, completed functional magnetic resonance imaging and psychophysiology within approximately two-weeks of trauma exposure. Seed-based amygdala connectivity and amygdala reactivity during passive viewing of fearful and neutral faces were assessed during fMRI. Physiological activity was assessed during Pavlovian threat conditioning. Participants also reported the severity of posttraumatic symptoms 3 and 6 months after trauma. Black individuals showed lower baseline skin conductance levels and startle compared to White individuals, but no differences were observed in physiological reactions to threat. Further, Hispanic and Black participants showed greater amygdala connectivity to regions including the dorsolateral prefrontal cortex (PFC), dorsal anterior cingulate cortex, insula, and cerebellum compared to White participants. No differences were observed in amygdala reactivity to threat. Amygdala connectivity was associated with 3-month PTSD symptoms, but the associations differed by racial/ethnic group and were partly driven by group differences in structural inequities. The present findings suggest variability in tonic neurophysiological arousal in the early aftermath of trauma between racial/ethnic groups, driven by structural inequality, impacts neural processes that mediate susceptibility to later PTSD symptoms.