bluuebunny/crossref_metadata_2025_split huggingface dataset:
Human-Lion Conflict and the Reproduction of White Supremacy in Northwest Namibia
Authors: Heydinger John 
Published: October 2021

AbstractThroughout the nineteenth and twentieth centuries, colonial governments used human-lion interactions to further their efforts to reproduce white supremacy in northwest Namibia. Drawing on archival, oral, and published sources, Heydinger presents this “animal-sensitive history,” which examines the central role of livestock in antagonistic human-lion interactions. The government has historically played a major role in securing European dominance over lions, while African pastoralists have suffered from human-lion conflict. Government interventions had lasting effects on human livelihoods and the geography of lion survival. Lions were eradicated on white farms, but they thrived in Etosha—where livestock were prohibited—and yet maintain a tenuous presence in Kaokoveld. Heydinger examines the ways in which human livelihoods and lion survival remain linked to one another to this day.
An abundance- and morphology-based similarity index
Authors: Dick Daniel G. , Laflamme Marc 
Published: October 2021

AbstractClassic similarity indices measure community resemblance in terms of incidence (the number of shared species) and abundance (the extent to which the shared species are an equivalently large component of the ecosystem). Here we describe a general method for increasing the amount of information contained in the output of these indices and describe a new “soft” ecological similarity measure (here called “soft Chao-Jaccard similarity”). The new measure quantifies community resemblance in terms of shared species, while accounting for intraspecific variation in abundance and morphology between samples. We demonstrate how our proposed measure can reconstruct short ecological gradients using random samples of taxa, recognizing patterns that are completely missed by classic measures of similarity. To demonstrate the utility of our new index, we reconstruct a morphological gradient driven by river flow velocity using random samples drawn from simulated and real-world data. Results suggest that the new index can be used to recognize complex short ecological gradients in settings where only information about specimens is available. We include open-source R code for calculating the proposed index.
Combined paleohistological and isotopic inferences of thermometabolism in extinct Neosuchia, usingGoniopholisandDyrosaurus(Pseudosuchia: Crocodylomorpha) as case studies
Authors: Faure-Brac Mathieu G. , Amiot Romain , de Muizon Christian , Cubo Jorge , Lécuyer Christophe 
Published: October 2021

AbstractThe evolution of thermometabolism in pseudosuchians (Late Triassic to the present) remains a partly unsolved issue: extant taxa (crocodilians) are ectothermic, but the clade was inferred ancestrally endothermic. Here we inferred the thermometabolic regime of two neosuchian groups, Goniopholididae (Early Jurassic to Late Cretaceous) and Dyrosauridae (middle Cretaceous to late Eocene), close relatives of extant crocodilians, in order to elucidate the evolutionary pattern across Metasuchia (Early Jurassic to the present), a clade comprising Neosuchia (Early Jurassic to the present) and Notosuchia (Middle Jurassic until the late Miocene). We propose a new integrative approach combining geochemical analyses to infer body temperature from the stable oxygen isotope composition of tooth phosphate and paleohistology and phylogenetic comparative methods to infer resting metabolic rates and red blood cell dimensions. †Dyrosaurusand †Goniopholisshare with extant crocodilians similar lifestyles, body forms, bone tissue organization, body temperatures, metabolic rates, and red blood cell dimensions. Consistently, we infer ectothermy for †Dyrosaurusand †Goniopholiswith the parsimonious implication of neosuchians and metasuchians being primitively ectothermic.
Association of plasma lead, cadmium and selenium levels with hearing loss in adults: National Health and Nutrition Examination Survey (NHANES) 2011–2012
Authors: Tu Yaqin , Fan Guorun , Wu Nan , Wu Hao , Xiao Hongjun 
Published: October 2021

AbstractTo determine the association between hearing loss and environmental Pb, Cd and Se exposure, a total of 1503 American adults from National Health and Nutrition Examination Survey (NHANES) (2011–2012) were assessed. The average of four audiometric frequencies (0·5, 1, 2 and 4 kHz) was used to identify speech-frequency hearing loss (SFHL), while the average of 3 audiometric frequencies (3, 4 and 6 kHz) was used to identify high-frequency hearing loss (HFHL). HFHL adjusted OR determined by comparing the highest and lowest blood Pb and Cd quartiles were 1·98 (95 % CI: 1·27, 3·10) and 1·81 (95 % CI: 1·13, 2·90), respectively. SFHL was significantly associated with blood Cd with the OR = 2·42 for the highest quartile. When further stratified by age, this association appeared to be limited to adults aged 35–52 years. After stratified by gender, except for Pb and Cd, we observed that blood Se showed a dose-dependent association with SFHL in men. In women, only Cd showed a dose-dependent association with speech and high-frequency hearing loss. Hearing loss was positively associated with blood levels of Pb and Cd. Additionally, our study provided novel evidence suggesting that excessive Se supplement would increase SFHL risk in men.
Effect of managed transition on mental health outcomes for young people at the child–adult mental health service boundary: a randomised clinical trial
Authors: Singh S. P. , Tuomainen H. , Bouliotis G. , Canaway A. , De Girolamo G. , Dieleman G. C. , Franić T. , Madan J. , Maras A. , McNicholas F. , Paul M. , Purper-Ouakil D. , Santosh P. , Schulze U. M. E. , Street C. , Tremmery S. , Verhulst F. C. , Wells P. , Wolke D. , Warwick J. ,   the MILESTONE Consortium
Published: October 2021

AbstractBackgroundPoor transition planning contributes to discontinuity of care at the child–adult mental health service boundary (SB), adversely affecting mental health outcomes in young people (YP). The aim of the study was to determine whether managed transition (MT) improves mental health outcomes of YP reaching the child/adolescent mental health service (CAMHS) boundary compared with usual care (UC).MethodsA two-arm cluster-randomised trial (ISRCTN83240263 and NCT03013595) with clusters allocated 1:2 between MT and UC. Recruitment took place in 40 CAMHS (eight European countries) between October 2015 and December 2016. Eligible participants were CAMHS service users who were receiving treatment or had a diagnosed mental disorder, had an IQ ⩾ 70 and were within 1 year of reaching the SB. MT was a multi-component intervention that included CAMHS training, systematic identification of YP approaching SB, a structured assessment (Transition Readiness and Appropriateness Measure) and sharing of information between CAMHS and adult mental health services. The primary outcome was HoNOSCA (Health of the Nation Outcome Scale for Children and Adolescents) score 15-months post-entry to the trial.ResultsThe mean difference in HoNOSCA scores between the MT and UC arms at 15 months was −1.11 points (95% confidence interval −2.07 to −0.14,p= 0.03). The cost of delivering the intervention was relatively modest (€17–€65 per service user).ConclusionsMT led to improved mental health of YP after the SB but the magnitude of the effect was small. The intervention can be implemented at low cost and form part of planned and purposeful transitional care.
Time trends in depression prevalence among Swedish 85-year-olds: repeated cross-sectional population-based studies in 1986, 2008, and 2015
Authors: Jonson Mattias , Sigström Robert , Hedna Khedidja , Rydberg Sterner Therese , Falk Erhag Hanna , Wetterberg Hanna , Fässberg Madeleine Mellqvist , Waern Margda , Skoog Ingmar 
Published: October 2021

AbstractBackgroundOctogenarians of today are better educated, and physically and cognitively healthier, than earlier born cohorts. Less is known about time trends in mental health in this age group. We aimed to study time trends in the prevalence of depression and psychotropic drug use among Swedish 85-year-olds.MethodsWe derived data from interviews with 85-year-olds in 1986–1987 (N = 348), 2008–2010 (N = 433) and 2015–17 (N = 321). Depression diagnoses were made according to the Diagnostic and Statistical Manual of Mental Disorders. Symptom burden was assessed with the Montgomery-Åsberg Depression Rating Scale (MADRS). Information on psychotropic drug use, sociodemographic, and health-related factors were collected during the interviews.ResultsThe prevalence of major depression was lower in 2015–2017 (4.7%, p < 0.001) and 2008–2010 (6.9%, p = 0.010) compared to 1986–1987 (12.4%). The prevalence of minor depression was lower in 2015–2017 (8.1%) compared to 2008–2010 (16.2%, p = 0.001) and 1986–1987 (17.8%, p < 0.001). Mean MADRS score decreased from 8.0 in 1986–1987 to 6.5 in 2008–2010, and 5.1 in 2015–2017 (p < 0.001). The reduced prevalence of depression was not explained by changes in sociodemographic and health-related risk factors for depression. While psychoactive drug use was observed in a third of the participants in each cohort, drug type changed over time (increased use of antidepressants and decreased use of anxiolytics and antipsychotics).ConclusionsThe prevalence of depression in octogenarians has declined during the past decades. The decline was not explained by changes in known risk factors for depression. The present study cannot answer whether changed prescription patterns of psychoactive drugs have contributed to the decline.
Lifestyle differentiation among older adults: exploring the links between individuals’ behaviours, socio-demographic characteristics, health and wellbeing in later life
Authors: Jarosz Ewa 
Published: October 2021

AbstractThe association between everyday activities, health and subjective wellbeing in older adults has mostly been examined using different activities as separate variables. Which activities are likely to come together in individuals’ daily time-use patterns, or in what context, has not yet been analysed. This study looks at a broad range of spontaneously reported activities, their location and social context to identify latent behavioural classes. The data used in the study came from a sample of 200 non-institutionalised adults aged 65 and above. Activity data were collected using the Experience Sampling Method. Generalised structural equation modelling was used to identify the classes. Three distinctive behavioural classes, representing different lifestyles, emerged: passive domiciliary, active functional and social recreational. They constituted 30, 53 and 17 per cent of the sample, respectively. Class membership was related to individuals’ age, education and selected dimensions of health measured using the Nottingham Health Profile: energy levels and emotional response. There was consistency between the objectively measured class and an individual's subjective assessment of their physical and emotional health. While both class membership and subjective wellbeing were associated with health, the relationship between class and wellbeing was weak and fully explained by socio-demographic and health-related variables.
Adaptively robust filtering algorithm for maritime celestial navigation
Authors: Li Chong-hui , Chen Zhang-lei , Liu Xin-jiang , Chen Bin , Zheng Yong , Tong Shuai , Wang Ruo-pu 
Published: October 2021

AbstractCelestial navigation is an important means of maritime navigation; it can automatically achieve inertially referenced positioning and orientation after a long period of development. However, the impact of different accuracy of observations and the influence of nonstationary states, such as ship speed change and steering, are not taken into account in existing algorithms. To solve this problem, this paper proposes an adaptively robust maritime celestial navigation algorithm, in which each observation value is given an equivalent weight according to the robust estimation theory, and the dynamic balance between astronomical observation and prediction values of vessel motion is adjusted by applying the adaptive factor. With this system, compared with the frequently used least square method and extended Kalman filter algorithm, not only are the real-time and high-precision navigation parameters, such as position, course, and speed for the vessel, calculated simultaneously, but also the influence of abnormal observation and vessel motion status change could be well suppressed.
A new electrically small antenna for on-demand 3.6/5.8 GHz wireless applications
Authors: Ahmad Salamin Mohammad , Zugari Asmaa 
Published: October 2021

AbstractThis article presents a highly miniaturized dual-band electrically small antenna (ESA) for on-demand 3.6 and 5.8 GHz wireless applications. A partial rectangle-shaped structure is printed on the back face of the dielectric material, forming the antenna's ground (GND) plane. The radiating structure of the antenna consists of a C-shaped structure and a U-shaped ring connected to it, which is printed on the dielectric material's front face. The overall dimensions of the designed antenna are 0.160λo × 0.160λo × 0.02λo at the lowest operating frequency. The proposed antenna has a ka value of 0.56 at the lowest operating frequency, which is 3.59 GHz. Thus, the proposed antenna is considered as electrically small. The characteristic mode analysis is adopted to provide a clear understanding of the antenna's resonance behavior. The antenna has been fabricated and the simulation results were validated through measurements. Good agreement between simulated and measured results was obtained. Dual-band operation at 3.62 and 5.75 GHz was achieved, according to the measured reflection coefficient. The proposed antenna offers an adequate performance in terms of gain and efficiency, based on simulation and measurement results. Because of these characteristics, the antenna is well-suited to new wireless applications.
Connecting Central America to the Southern Cone: The Chilean and Argentine Response to the Nicaraguan Revolution of 1979
Authors: Avery Molly 
Published: October 2021

AbstractThe history of the Cold War in Latin America in the 1970s is commonly split into two episodes: the establishment of anticommunist dictatorships and the ensuing repression across the Southern Cone in the early and middle decade, and the Nicaraguan Revolution and the eruption of violent conflicts across Central America at its close. By exploring the Chilean and Argentine response to the Nicaraguan Revolution, this article brings these two episodes together, demonstrating how they were understood to belong to one and the same ideological conflict. In doing so, it highlights the importance of the revolution in the Chilean and Argentine perception of the Cold War and explores how the Sandinista triumph directly shaped Southern Cone ideas about US power and the communist threat, also prompting reflection on their own ‘models’ for anticommunist governance. Both regimes responded by increasing their support for anticommunist forces in Guatemala and El Salvador, often conducting this aid through a wider transnational and clandestine network. This article contributes to new understandings of the nature of Latin American anticommunism in this period, challenges traditional understandings of external involvement in Central America, and demonstrates the need to understand events in Latin America in this period in their full regional context.
Where and How the East Madagascar Current Retroflection Originates?
Authors: Ramanantsoa Juliano D. , Penven P. , Raj R. P. , Renault L. , Ponsoni L. , Ostrowski M. , Dilmahamod A. F. , Rouault M. 
Published: October 2021

AbstractThe East Madagascar Current (EMC) is one of the western boundary currents of the South Indian Ocean. As such, it plays an important role in the climate system by transporting water and heat toward the pole and recirculating to the large‐scale Indian Ocean through retroflection modes of its southern extension. Five cruise data sets and remote sensing data from different sensors are used to identify three states of the southern extension of the EMC: early retroflection, canonical retroflection, and no retroflection. Retroflections occur 47% of the time. EMC strength regulates the retroflection state, although impinged mesoscale eddies also contribute to retroflection formation. Early retroflection is linked with EMC volume transport. Anticyclonic eddies drifting from the central Indian Ocean to the coast favor early retroflection formation, anticyclonic eddies near the southern tip of Madagascar promote the generation of canonical retroflection, and no retroflection appears to be associated with a lower eddy kinetic energy (EKE). Knowledge of the EMC retroflection state could help predict (a) coastal upwelling south of Madagascar, (b) the southeastern Madagascar phytoplankton bloom, and (c) the formation of the South Indian Ocean Counter Current (SICC).
Drivers of Global Clear Sky Surface Downwelling Longwave Irradiance Trends From 1984 to 2017
Authors: Clark J. P. , Clothiaux E. E. , Feldstein S. B. , Lee S. 
Published: October 2021

AbstractRadiation changes at the Earth's surface alter climate, however, the causes of observed surface radiation changes are not precisely quantified globally. With complete global coverage by ERA‐Interim, the drivers of the clear sky surface downwelling longwave irradiance (SDLI) trends from 1984 to 2017 are quantifiable everywhere. Trends in atmospheric temperature and water vapor contributed significantly (∼90%) to clear sky SDLI trends, including trends consistent with Arctic warming and Southern Ocean cooling. CO2 contributed ∼10% and other greenhouse gases (CH4, N2O, CFC‐11, and CFC‐12) ∼1% to the SDLI trends. These observation‐based results are consistent with early CO2‐doubling climate model calculations wherein temperature and water vapor changes drove ∼90% of the SDLI change. The well‐mixed greenhouse gases drive location‐dependent SDLI trends that are strongest over regions with climatologically high temperatures and low water vapor amounts.
Interannual Variability of Surface Salinity and Ekman Pumping in the Canada Basin During Summertime of 2003–2017
Authors: Dong Jihai , Jin Meibing , Liu Yu , Dong Changming 
Published: October 2021

AbstractThe Canada Basin (CB) is undergoing significant changes due to long‐term global climate change, and other shorter time‐scale processes that are still not well understood. Based on the in‐situ and satellite observations and atmospheric reanalysis data, interannual variabilities of sea surface salinity and Ekman pumping in the CB are investigated in the summertime of 2003–2017. This study reveals strong surface salinity reduction and Ekman downwelling enhancement during 2006–2012 compared with the remaining years. The surface 20‐m salinity averaged in 2006–2012 decreases by 1.26 PSU relative to the other years. The results suggest that the lower surface salinity is correlated to enhanced sea ice melt and Ekman convergence in the CB. Enhanced downward solar radiation accounts for the accelerated sea ice melt over the southeast CB, leading to the surface salinity decrease. Strengthened anticyclonic wind circulation over the CB not only enhances sea ice melt via strengthening offshore Ekman transport over the Chukchi Sea slope, but also favors freshwater accumulation in the CB through strengthening the horizontal convergence. The sea ice melt is estimated to account for 54% of the surface freshening, and the horizontal convergence is believed to play an important role in the remaining 46%. During the freshening years in the CB, the Ekman downwelling enhancement is mainly attributed to variations of wind stress curl, sea ice concentration, and ice‐ocean stress curl, and their relative contributions are estimated on the basis of on a linearized model as 72%, 12%, and 10%, respectively.
Slower Long‐Term Coastal Warming Drives Dampened Trends in Coastal Marine Heatwave Exposure
Authors: Marin Maxime , Bindoff Nathaniel L. , Feng Ming , Phillips Helen E. 
Published: October 2021

AbstractLong‐term temperature changes drive coastal Marine Heatwave (MHW) trends globally. Here, we provide a more comprehensive global analysis of cross‐shore gradients of MHW and Sea Surface Temperatures (SST) changes using an ensemble of three satellite SST products during recent decades. Our analysis reveals depressed onshore SST trends in more than 2/3 of coastal pixels, including both eastern and western boundary current systems. These were well correlated with depressed trends of MHW exposure and severity, ranging from a −2 to −10 decrease in MHW days per decade and from a −2.5°C to −15°C.days per decade decrease in cumulative intensity. Results were consistent across all satellite products, indicating that these cross‐shore gradients are a robust feature of observations. ERA reanalysis data show that neither air‐sea heat fluxes nor wind driven upwelling were found to be consistent drivers. Global ocean circulation models (OFAM3 and ACCESS‐OM2) have limited ability to simulate the depressed onshore trends. A heat budget analysis performed in the Chilean coast region, where models agree with observations, showed that the gradient of temperature change was controlled by an onshore increase of longwave radiative cooling, despite an increase in upwelling. This highlights the complexity of small‐scale coastal ocean‐atmosphere feedbacks, which coarser resolution climate models do not resolve. Here, we show that global coastal regions may act as thermal refugia for marine ecosystems from aspects of climate change and pulsative (MHW) changes. Contrary to the literature, our results suggest that driving mechanisms are region dependant, stressing the necessity to improve climate models resolution.
Non‐Marine Sources Contribute to Aerosol Methanesulfonate Over Coastal Seas
Authors: Zhou Shengqian , Chen Ying , Paytan Adina , Li Haowen , Wang Fanghui , Zhu Yucheng , Yang Tianjiao , Zhang Yan , Zhang Ruifeng 
Published: October 2021

AbstractMethanesulfonate (MSA) in the marine boundary layer is commonly considered to be solely contributed by the oxidation of ocean‐derived dimethyl sulfide (DMS) and often used as an indicator of marine biogenic sources. But whether this judgment is valid in coastal seas and how the validity is affected by air mass transport history have been less discussed. Based on multi‐year observations of aerosol MSA in the coastal East China Sea (ECS) and the Gulf of Aqaba (GA), as well as the analysis of air mass transport pattern and exposure to ocean surface phytoplankton biomass, we found that terrestrial sources made a non‐negligible contribution to MSA over the ECS but not over the GA. The abundant MSA in winter over the coastal ECS was likely associated with substantial emissions of volatile organic sulfur compounds from both anthropogenic and natural sources in eastern China and significant terrestrial transport influenced by the East Asian Monsoon. Good correlations between aerosol MSA and air mass exposure to surface phytoplankton biomass were established by removing the influence of terrestrial transport and confining the air transport height within boundary layer, which makes it possible to construct parameterizations for obtaining the spatiotemporal distributions of marine biogenic aerosol components using satellite ocean color datasets.