bluuebunny/crossref_metadata_2025_split huggingface dataset:
A study of differential foundation settlement of piled raft and its effect on the long‐term vertical shortening of super‐tall buildings
Authors: Wang Lilin , Zhao Xin , Liu Shehong 
Published: January 2021

SummaryIn this study, the long‐term differential foundation settlement and vertical shortening of super‐tall buildings are investigated considering the coupling effect. At first, a time‐dependent settlement model is proposed to predict the foundation settlement based on the construction sequence method, in which both soil compression and pile shortening are considered. The pile shortening including the elasticity, shrinkage, and creep contributes to the most settlement of a single pile. The distribution of foundation settlement of piled raft is pot shaped with a large value in the core while small values in the surroundings. A time‐dependent soil‐foundation‐structure system is then developed using a series of equivalent springs to represent the distributed foundation settlements, by which the vertical shortenings of shear wall and mega column are predicted considering the coupling effect and moisture distribution. The pot‐shaped distribution of foundation settlement of piled raft leads to the decrease of vertical shortening for shear wall while the increase of vertical shortening for mega column, especially in the low stories. Finally, some health monitoring records of the Shanghai Tower are applied to validate the proposed time‐dependent settlement model and soil‐foundation‐structure system. The predicted foundation settlements show reasonable agreement with the monitoring records. The predicted vertical shortenings with considering the differential foundation settlement agree better with measurements than those without considering the differential foundation settlement.
Vibration busters: An interdisciplinary approach to learning of dynamical systems
Authors: Walentyński Ryszard , Słota Damian , Szczygieł Marcin 
Published: January 2021

AbstractA group of six pre‐graduated students of Civil Engineering, Mathematics and Mechatronics studied problems of dynamics of structures within a project called Vibration Busters implemented in a formula of Project Based Learning. They worked under supervision of professors from the above mentioned faculties. Students, according to their competencies, implemented a procedure of numerical analysis of the problem within Mathematica system, built a physical model of a frame and loaded it with vibrating electrical motors and measured behaviour of the structure. The aim of the project was to develop methods of passive and active controlling of vibrations of building structures. A technology of 3D printing was implemented to build a structure. Thanks to the project students had an opportunity to share their skills and knowledge and acquire several new hard and soft skills. It was also a unique experience for supervisors and a great opportunity to extend fields of interdisciplinary cooperation. The aim of the presentation is to share results and experience gained thanks to this extraordinary and successful educational project.
On the Betti numbers of compact holomorphic symplectic orbifolds of dimension four
Authors: Fu Lie , Menet Grégoire 
Published: January 2021

AbstractWe extend a result of Guan by showing that the second Betti number of a 4-dimensional primitively symplectic orbifold is at most 23 and there are at most 91 singular points. The maximal possibility 23 can only occur in the smooth case. In addition to the known smooth examples with second Betti numbers 7 and 23, we provide examples of such orbifolds with second Betti numbers 3, 5, 6, 8, 9, 10, 11, 14 and 16. In an appendix, we extend Salamon’s relation among Betti/Hodge numbers of symplectic manifolds to symplectic orbifolds.
Segregierte Schulmilieus, variierende Unterrichtsbedingungen und Lernleistungen der Schülerinnen und Schüler. Eine Analyse mit Daten der Grundschulen in Rheinland-Pfalz 2015/16
Authors: Kraus Thorben , Weishaupt Horst , Hosenfeld Ingmar 
Published: January 2021

ZusammenfassungAuf der Grundlage der VERA3-Daten der Grundschulen in Rheinland-Pfalz wird der Zusammenhang zwischen der sozialen Zusammensetzung der Schülerinnen und Schüler der einzelnen Schulen und den durchschnittlichen Leistungen im Leseverstehen und in Mathematik analysiert. Besonders interessiert der vermittelnde Einfluss der schulstatistisch erfassten schul- und unterrichtsorganisatorischen Bedingungen, weil sie – im Gegensatz zu der familiären Situation der Schülerinnen und Schüler – schulpolitisch beeinflusst werden können. Neben deskriptiven Befunden wird ein Pfadmodell berechnet, in das die schulorganisatorischen Variablen als vermittelnde Prozessvariablen des Zusammenhangs zwischen Merkmalen der Schülerschaft und den gemessenen durchschnittlichen Leistungen enthalten sind.
A new meta-heuristic pathfinder algorithm for solving optimal allocation of solar photovoltaic system in multi-lateral distribution system for improving resilience
Authors: Janamala Varaprasad 
Published: January 2021

AbstractA new meta-heuristic Pathfinder Algorithm (PFA) is adopted in this paper for optimal allocation and simultaneous integration of a solar photovoltaic system among multi-laterals, called interline-photovoltaic (I-PV) system. At first, the performance of PFA is evaluated by solving the optimal allocation of distribution generation problem in IEEE 33- and 69-bus systems for loss minimization. The obtained results show that the performance of proposed PFA is superior to PSO, TLBO, CSA, and GOA and other approaches cited in literature. The comparison of different performance measures of 50 independent trail runs predominantly shows the effectiveness of PFA and its efficiency for global optima. Subsequently, PFA is implemented for determining the optimal I-PV configuration considering the resilience without compromising the various operational and radiality constraints. Different case studies are simulated and the impact of the I-PV system is analyzed in terms of voltage profile and voltage stability. The proposed optimal I-PV configuration resulted in loss reduction of 77.87% and 98.33% in IEEE 33- and 69-bus systems, respectively. Further, the reduced average voltage deviation index and increased voltage stability index result in an improved voltage profile and enhanced voltage stability margin in radial distribution systems and its suitability for practical applications.
Numerical study of time-dependent ferrofluid flow past a cylinder in the presence of stationary magnetic field
Authors: Bhandari Anupam 
Published: January 2021

AbstractThis work investigates time-dependent ferrofluid flow past in a cylinder in the presence of a 10 kilo-ampere per meter magnetic field. The Reynolds number is about a hundred to keep the laminar flow and it is high enough to form a von Karman vortex street. This study presents the results for the velocity distributions, pressure distributions, lift coefficient, and drag coefficient under the influence of the stationary magnetic field. These results are compared with the flow in the absence of the magnetic field. The presence of the magnetic field diminishes the velocity distributions in the flow due to magnetization force and magnetic field dependent viscosity. This reduction in the velocity reduces the average velocity in the flow and therefore the magnetic field intensity enhances the coefficients of drag and lift. In the presence of the applied magnetic field, the velocity drops from 2.19 to 1.97 m/s at t = 7 s. However, the lift coefficients enhance from 3 m2s2/kg to 3.4 m2s2/kg and the drag coefficient enhances from 0.9 to 3 m2s2/kg. The numerical simulation of the problem is obtained using the finite element method in COMSOL Multiphysics.
Detail investigation of thermoelectric performance and magnetic properties of Cs-doped Bi2Sr2Co2Oy ceramic materials
Authors: Özçelik B. , Gürsul M. , Çetin G. , Özçelik C. , Torres M. A. , Madre M. A. , Sotelo A. 
Published: January 2021

AbstractBi2Sr2−xCsxCo2Oy materials with 0 ≤ x ≤ 0.15, have been fabricated via the classical ceramic technique. XRD results have indicated that undoped and Cs-substituted samples are composed of Bi2Sr2Co2Oy phase as the major one. Microstructural studies have demonstrated the formation of a liquid phase, which allows a drastic grain growth. This factor is responsible for a drastic improvement of relative density, reaching about 95% of the theoretical one for 0.125 Cs content. On the other hand, electrical resistivity has been reduced up to 14 mΩ cm at 650 °C for 0.125 Cs content, around 40% lower than the obtained in undoped samples. As a consequence, Seebeck coefficient has been decreased due to the raise in charge carrier concentration. The highest power factor at 650 °C (0.21 mW/K2 m) has been found for 0.125 Cs substituted sample, about 40% larger than the obtained in undoped samples, and very similar to the notified in single crystals (0.26 mW/K2 m). Magnetisation with respect to temperature results have demonstrated that measured samples have a paramagnetic property above 50 K, except 0.10 Cs. Magnetic hysteresis curves have shown that the slopes and the magnitudes have increased with decreasing temperature.
Rising Waves of Feminism or Faltering Steps of Criminal Justice – What Plagues India?
Authors: Dube Dipa , Chakraborty Ankita 
Published: January 2021

AbstractIn the recent past, the #MeToo movement has shaken India. A docket of high-flying names, from politicians to celebrities and journalists, have come under scrutiny for alleged sexual abuse of women. Flagged by a Bollywood actress, the #MeToo campaign in India ignited feminists, academicians, and policymakers to re-examine women’s continued abuse in all sections of society. Despite a stringent legal regime enforced after the Nirbhaya tragedy, the abuse of women continues unabated. Feminists opine that violence against women remains an ongoing concern that is heightened in the face of a waning criminal justice system that fails to address their plight. Lack of confidence in the system discourages women from approaching the authorities, something palpable in #MeToo allegations, where women preferred to remain silent in the face of inevitable backlash from society, lack of support and cooperation from police and prosecution and finally, courts, where the victim is positioned as the accused to respond to questions of how and why? This article examines the #MeToo movement against the rising crime graph’s backdrop and the criminal justice system’s consequent failure to respond to the same.
On subshifts with slow forbidden word growth
Authors: PAVLOV RONNIE 
Published: January 2021

AbstractIn this work, we treat subshifts, defined in terms of an alphabet
$\mathcal {A}$
and (usually infinite) forbidden list
$\mathcal {F}$
, where the number of n-letter words in
$\mathcal {F}$
has ‘slow growth rate’ in n. We show that such subshifts are well behaved in several ways; for instance, they are boundedly supermultiplicative in the sense of Baker and Ghenciu [Dynamical properties of S-gap shifts and other shift spaces. J. Math. Anal. Appl.430(2) (2015), 633–647] and they have unique measures of maximal entropy with the K-property and which satisfy Gibbs bounds on large (measure-theoretically) sets. The main tool in our proofs is a more general result, which states that bounded supermultiplicativity and a sort of measure-theoretic specification property together imply uniqueness of the measure of maximum entropy and our Gibbs bounds. We also show that some well-known classes of subshifts can be treated by our results, including the symbolic codings of
$x \mapsto \alpha + \beta x$
(the so-called
$\alpha $
-
$\beta $
shifts of Hofbauer [Maximal measures for simple piecewise monotonic transformations. Z. Wahrsch. verw. Geb.52(3) (1980), 289–300]) and the bounded density subshifts of Stanley [Bounded density shifts. Ergod. Th. & Dynam. Sys.33(6) (2013), 1891–1928].
Exploring the impact of decentralized leadership on knowledge sharing and work hindrance networks in healthcare teams
Authors: Scheuer Cara-Lynn , Voltan Annika , Kumanan Kothai , Chakraborty Subhajit 
Published: January 2021

AbstractThis paper adopts an explanatory sequential mixed method design to explore the impact of decentralized (vs. centralized) leadership on cross-functional teams' resource exchanges at a long-term care facility in Canada. In the quantitative phase, social network analyses were used to examine the direct and moderated effects (via leader–follower relationship quality; LMX) of the presence of formal decentralized leaders on: (1) knowledge sharing, and (2) work hindrance networks within cross-functional healthcare teams. In the qualitative phase, team members were interviewed regarding the impact of their decentralized leaders. Collectively, the findings suggest that the presence of a decentralized leader may enhance knowledge sharing and safeguard against work hindrance behaviors in cross-functional healthcare teams. However, these effects are contingent on the situation (e.g., LMX quality and status-based hierarchies). Implications for research and healthcare practice are discussed.
Provenance and paleoclimatic implications of loess deposits in Shandong Province, eastern China
Authors: Wang Yongda , Yang Shiling , Ding Zhongli 
Published: January 2021

AbstractThe loess deposits in Shandong Province in eastern China potentially provide valuable insights into past environmental changes. However, their precise provenance and paleoclimatic implications are unclear. We studied three loess sections located in the piedmont of the Central Shandong Mountains (PCSM) and in an offshore island in Bohai Gulf. Both the glacial loess and interglacial paleosol units are characterized by a coarse grain size, indicating a proximal sediment source. Using the “grain size–transport distance” model established for the Chinese Loess Plateau (CLP), the estimated source-sink distance is ~200–300 km for the PCSM loess and ~100–200 km for the coastal loess. This suggests that fluvial deposits of the Yellow River system in the North China Plain and sediments on the adjacent continental shelf are the major provenance for the Shandong loess. In contrast to the CLP, the Shandong loess does not show a consistent pattern of coarse grain size and low magnetic susceptibility values in glacial loess compared with interglacial paleosols, likely due to frequent changes in dust sources caused by diversions of the Yellow River and local hydroclimatic conditions. Nevertheless, the loess-paleosol alternations in the Shandong loess are a product of global glacial–interglacial cycles.
Pleistocene golden mole and sand-swimming trace fossils from the Cape coast of South Africa
Authors: Lockley Martin G. , Helm Charles W. , Cawthra Hayley C. , De Vynck Jan C. , Perrin Michael R. 
Published: January 2021

AbstractMore than 250 Pleistocene vertebrate trace fossil sites have been identified on the Cape south coast of South Africa in aeolianites and cemented foreshore deposits. These discoveries, representing the epifaunal tracks of animals that moved over these sand substrates, complement traditional body fossil studies, and contribute to palaeo-environmental reconstruction. Not described in detail until now, but also important faunal components, are the infaunal traces of animals that moved within these sandy substrates. Six golden mole burrow trace sites (Family Chrysochloridae) have been identified on the Cape south coast. In addition, three sites, including one on the Cape southeast coast, have been identified that show evidence of sand-swimming, probably by a golden mole with a means of locomotion similar to that of the extantEremitalpagenus. Such traces have not been described in detail in the global ichnology record, and merit the erection of a new ichnogenusNatatorichnus, with two ichnospecies,N. subarenosaichnosp. nov andN. sulcatusichnosp. nov. Care is required in the identification of such traces, and the orientation of the trace fossil surface needs to be determined, to avoid confusion with hatchling turtle tracks. Substantial regional Pleistocene dune environments are inferred from these sand-swimming traces.
Disaster microconchids from the uppermost Permian and Lower Triassic lacustrine strata of the Cis-Urals and the Tunguska and Kuznetsk basins (Russia)
Authors: Shcherbakov Dmitry E. , Vinn Olev , Zhuravlev Andrey Yu. 
Published: January 2021

AbstractWe describe aggregative microconchid (Lophophorata) tubes from the uppermost Permian (upper Changhsingian) and Lower Triassic (Olenekian) lacustrine and fluvial strata of the Tunguska and Kuznetsk basins and the southern Cis-Urals, Russia. These attach to clam shrimp carapaces, bivalve shells, terrestrial plant fragments and a horseshoe crab head shield, and also form their own monospecific agglomerations. Planispiral tubes of a wide size range (0.1–2.5 mm) create dense settlements on these firm substrates, which likely comprise multiple generations of the same species. These finds confirm that this extinct lophophorate group was inhabiting non-marine continental basins during latest Permian and earliest Triassic time, when they were major suspension feeders in such limnic ecosystems. Microconchids dispersed extensively and rapidly in the aftermath of the Permian–Triassic mass extinction into both marine and continental basins at low and moderately high latitudes, which were notably different in salinity, temperature, depth and redox conditions. This confirms that small lightly calcified microconchids were a genuine disaster eurytopic group, whose expansion may have been promoted by low predator pressure and low competition for substrate.
PTSD and complex PTSD in sentenced male prisoners in the UK: prevalence, trauma antecedents, and psychiatric comorbidities
Authors: Facer-Irwin Emma , Karatzias Thanos , Bird Annie , Blackwood Nigel , MacManus Deirdre 
Published: January 2021

AbstractBackgroundPosttraumatic stress disorder (PTSD) is highly prevalent within prison settings, yet is often unidentified and undertreated. Complex PTSD (CPTSD) has been recently formally recognised in the International Classification of Diseases 11th revision (ICD-11) diagnostic framework but has never been explored in prison settings. We aimed to establish the prevalence of ICD-11 PTSD and CPTSD in a UK prison sample using a validated instrument (the International Trauma Questionnaire). We also explored the associations of these two diagnoses with their traumatic antecedents and psychiatric comorbidities.MethodRandomly selected male, sentenced prisoners in a large medium-security prison in south London (N = 221) took part in a clinical interview which assessed PTSD, CPTSD, trauma histories, and comorbid disorders. Multinomial logistic regression was performed to examine differences between those with PTSD or CPTSD, and those without symptoms.ResultsA total of 7.7% (95% CI 4.5–12) of the male sentenced prisoners met diagnostic criteria for ICD-11 PTSD and 16.7% (95% CI 12.1–22.3) for CPTSD. A diagnosis of PTSD was associated with more recent traumatic exposure, comorbid generalised anxiety disorder, alcohol dependence, and Cluster B personality disorder. A diagnosis of CPTSD was associated with complex trauma exposure antecedents (developmental, interpersonal, repeated, or multiple forms), and comorbid with anxiety, depression, substance misuse, psychosis, and ADHD.ConclusionsThis study confirms that CPTSD is a very common and comorbid condition in male prisoners. There is an urgent need to develop trauma-informed care in prisons.
Neurodevelopmental disorders among Spanish school-age children: prevalence and sociodemographic correlates
Authors: Bosch Rosa , Pagerols Mireia , Rivas Cristina , Sixto Laura , Bricollé Laura , Español-Martín Gemma , Prat Raquel , Ramos-Quiroga Josep A. , Casas Miquel 
Published: January 2021

AbstractBackgroundPrevalence estimates of neurodevelopmental disorders (ND) are essential for treatment planning. However, epidemiological research has yielded highly variable rates across countries, including Spain. This study examined the prevalence and sociodemographic correlates of ND in a school sample of Spanish children and adolescents.MethodsThe Child Behaviour Checklist/Teacher's Report Form/Youth Self-Report and the Conners' Rating Scales were administered for screening purposes. Additionally, teachers provided information on reading and writing difficulties. Subjects who screened positive were interviewed for diagnostic confirmation according to the Diagnostic and Statistical Manual of Mental Disorders criteria. The final population comprised 6834 students aged 5–17. Multivariate analyses were performed to determine the influence of gender, age, educational stage, school type, socioeconomic status (SES), and ethnicity on the prevalence estimates.ResultsA total of 1249 (18.3%) subjects met criteria for at least one ND, although only 423 had already received a diagnosis. Specifically, the following prevalence rates were found: intellectual disabilities (ID), 0.63%; communication disorders, 1.05%; autism spectrum disorder (ASD), 0.70%; attention-deficit/hyperactivity disorder (ADHD), 9.92%; specific learning disorder (SLD), 10.0%; and motor disorders, 0.76%. Students of foreign origin and from low SES evidenced higher odds of having ID. Boys were more likely to display ASD or a motor disorder. Age, SES, and ethnicity were significant predictors for SLD, while communication disorders and ADHD were also associated with gender.ConclusionsThe prevalence of ND among Spanish students is consistent with international studies. However, a substantial proportion had never been previously diagnosed, which emphasise the need for early detection and intervention programmes.
Delineating the developmental sequelae of children's risky involvement in interparental conflict
Authors: Thompson Morgan J. , Davies Patrick T. , Hentges Rochelle F. , Sturge-Apple Melissa L. 
Published: January 2021

AbstractThe present study examined the developmental value of parsing different forms of children's risky involvement in interparental conflict as predictors of children's subsequent psychological adjustment. Participants included a diverse sample of 243 preschool children (Mage = 4.6 years) and their mothers across two measurement occasions spaced 2 years apart. Three forms of risky involvement (i.e., cautious, caregiving, and coercive) were identified using maternal narratives describing children's emotional and behavioral reactivity during and immediately following interparental conflict. Utilizing a multimethod, multi-informant design, findings revealed that each form of involvement prospectively predicted unique configurations of children's developmental outcomes. Greater coercive involvement was associated with higher levels of externalizing problems, callous and unemotional traits, and extraversion. Higher levels of caregiving involvement were linked with greater separation anxiety. Finally, cautious involvement predicted more separation anxiety and social withdrawal.
Anomalous aortic origin of a right coronary artery: two brothers with an identical pattern
Authors: Giusti Giuliano , Caputo Salvatore , Pozzi Marco 
Published: January 2021

AbstractWe report on the diagnosis of anomalous coronary artery in two brothers. Following the diagnosis of anomalous coronary artery in one sibling, we screened immediate family relatives and found the same anomaly in the older brother. Familiarity in this pathology is extremely rare. We analysed and compared clinical, echocardiographic and radiological findings in the two brothers.