bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Class of Well-Balanced Algorithms for Relativistic Fluids on a Schwarzschild Background
Authors: LeFloch Philippe G. , Parés Carlos , Pimentel-García Ernesto 
Published: August 2021

AbstractFor the evolution of a compressible fluid in spherical symmetry on a Schwarzschild curved background, we design a class of well-balanced numerical algorithms up to third-order accuracy. We treat both the relativistic Burgers–Schwarzschild model and the relativistic Euler–Schwarzschild model and take advantage of the explicit or implicit forms available for the stationary solutions of these models. Our schemes follow the finite volume methodology and preserve the stationary solutions. Importantly, they allow us to investigate the global asymptotic behavior of such flows and determine the asymptotic behavior of the mass density and velocity field of the fluid.
Resource allocation in the Covid-19 health crisis: are Covid-19 preventive measures consistent with the Rule of Rescue?
Authors: März Julian W. , Holm Søren , Schlander Michael 
Published: August 2021

AbstractThe Covid-19 pandemic has led to a health crisis of a scale unprecedented in post-war Europe. In response, a large amount of healthcare resources have been redirected to Covid-19 preventive measures, for instance population-wide vaccination campaigns, large-scale SARS-CoV-2 testing, and the large-scale distribution of protective equipment (e.g., N95 respirators) to high-risk groups and hospitals and nursing homes. Despite the importance of these measures in epidemiological and economic terms, health economists and medical ethicists have been relatively silent about the ethical rationales underlying the large-scale allocation of healthcare resources to these measures. The present paper seeks to encourage this debate by demonstrating how the resource allocation to Covid-19 preventive measures can be understood through the paradigm of the Rule of Rescue, without claiming that the Rule of Rescue is the sole rationale of resource allocation in the Covid-19 pandemic.
On Itô formulas for jump processes
Authors: Gyöngy István , Wu Sizhou 
Published: August 2021

AbstractA well-known Itô formula for finite-dimensional processes, given in terms of stochastic integrals with respect to Wiener processes and Poisson random measures, is revisited and is revised. The revised formula, which corresponds to the classical Itô formula for semimartingales with jumps, is then used to obtain a generalisation of an important infinite-dimensional Itô formula for continuous semimartingales from Krylov (Probab Theory Relat Fields 147:583–605, 2010) to a class of $$L_p$$

L
p

-valued jump processes. This generalisation is motivated by applications in the theory of stochastic PDEs.
Detection Capability Verification and Performance Test for the High Resolution Imaging Camera of China’s Tianwen-1 Mission
Authors: Yan Wei , Liu Jianjun , Ren Xin , Li Chunlai , Fu Qiang , Wang Dong , Dong Jihong , Zhang Xiaoxia , Chen Wangli , Tan Xu , Huang Hai , Cao Zhirui , Yan Dejie , Ji Qi , Wu Fanlu 
Published: August 2021

AbstractHigh-resolution optical cameras have always been important scientific payloads in Mars exploration missions, which can obtain detailed images of Martian surface for the study of geomorphology, topography and geological structure. At present, there are still many challenges for Mars high-resolution images in terms of global coverage, stereo coverage (especially for colour images), and data processing methods. High Resolution Imaging Camera (HiRIC) is a high-quality, multi-mode, multi-functional, multi-spectral remote sensing camera that is suitable for the deep space developed for China’s first Mars Exploration Mission (Tianwen-1), which was successfully launched in July 2020. Here we design special experiments based on the in-orbit detection conditions of Tianwen-1 mission to comprehensively verify the detection capability and the performance of HiRIC, from the aspects of image motion compensation effect, focusing effect, image compression quality, and data preprocessing accuracy. The results showed that the performance status of HiRIC meets the requirements of obtaining high resolution images on the Martian surface. Furthermore, proposals for HiRIC in-orbit imaging strategy and data processing are discussed to ensure the acquisition of high-quality HiRIC images, which is expected to serve as a powerful complementation to the current Mars high-resolution images.
Ethnic discrimination in secondary education: Does the solution lie in multicultural education and the ethnic school composition?
Authors: D’hondt Fanny , Maene Charlotte , Vervaet Roselien , Van Houtte Mieke , Stevens Peter A. J. 
Published: August 2021

AbstractEthnic discrimination is a serious problem in education. Previous quantitative research is predominately focused on the consequences of ethnic discrimination. Very little is known, however, about the characteristics of the school context that influence the initial experience of ethnic discrimination. This knowledge is essential to support schools in how to organize in a way that diminishes the likelihood of adolescents being discriminated against. This study examines the relationship between multicultural education and perceived ethnic discrimination, and the moderating role of the ethnic composition of the student population. Multicultural education is a broad concept. The focus lies on the three main actors: multicultural policy from the perspective of the principal, multicultural teaching from the perception of the teacher and students’ perception of multicultural teaching. The results of a multilevel analysis on a large-scale dataset (N = 2715 students, 38 schools) collected in secondary education in Belgium show that students of ethnic Belgian descent are more likely to report ethnic discrimination by peers if the school applies a more multicultural policy or if the school has a high concentration of students with an other-than-Belgian background. Students with an other-than-Belgian background are more likely to report ethnic discrimination by teachers if the school applies a more multicultural policy. If students perceive that their teachers pay attention to multicultural education, they are less likely to report ethnic discrimination by teachers, but more by peers. The ethnic composition is not directly related to perceived ethnic discrimination, nor does it play a moderating role.
Clinical Trials Based on Mesenchymal Stromal Cells are Exponentially Increasing: Where are We in Recent Years?
Authors: Galderisi Umberto , Peluso Gianfranco , Di Bernardo Giovanni 
Published: August 2021

AbstractMesenchymal stromal cells (MSCs), present in the stromal component of several tissues, include multipotent stem cells, progenitors, and differentiated cells. MSCs have quickly attracted considerable attention in the clinical field for their regenerative properties and their ability to promote tissue homeostasis following injury. In recent years, MSCs mainly isolated from bone marrow, adipose tissue, and umbilical cord—have been utilized in hundreds of clinical trials for the treatment of various diseases. However, in addition to some successes, MSC-based therapies have experienced several failures. The number of new trials with MSCs is exponentially growing; still, complete results are only available for a limited number of trials. This dearth does not help prevent potentially inefficacious and unnecessary clinical trials. Results from unsuccessful studies may be useful in planning new therapeutic approaches to improve clinical outcomes. In order to bolster critical analysis of trial results, we reviewed the state of art of MSC clinical trials that have been published in the last six years. Most of the 416 published trials evaluated MSCs’ effectiveness in treating cardiovascular diseases, GvHD, and brain and neurological disorders, although some trials sought to treat immune system diseases and wounds and to restore tissue. We also report some unorthodox clinical trials that include unusual studies.
Graphical abstract
Caution, “normal” BMI: health risks associated with potentially masked individual underweight—EPMA Position Paper 2021
Authors: Golubnitschaja Olga , Liskova Alena , Koklesova Lenka , Samec Marek , Biringer Kamil , Büsselberg Dietrich , Podbielska Halina , Kunin Anatolij A. , Evsevyeva Maria E. , Shapira Niva , Paul Friedemann , Erb Carl , Dietrich Detlef E. , Felbel Dieter , Karabatsiakis Alexander , Bubnov Rostyslav , Polivka Jiri , Polivka Jiri , Birkenbihl Colin , Fröhlich Holger , Hofmann-Apitius Martin , Kubatka Peter 
Published: August 2021

Abstract
An increasing interest in a healthy lifestyle raises questions about optimal body weight. Evidently, it should be clearly discriminated between the standardised “normal” body weight and individually optimal weight. To this end, the basic principle of personalised medicine “one size does not fit all” has to be applied. Contextually, “normal” but e.g. borderline body mass index might be optimal for one person but apparently suboptimal for another one strongly depending on the individual genetic predisposition, geographic origin, cultural and nutritional habits and relevant lifestyle parameters—all included into comprehensive individual patient profile. Even if only slightly deviant, both overweight and underweight are acknowledged risk factors for a shifted metabolism which, if being not optimised, may strongly contribute to the development and progression of severe pathologies. Development of innovative screening programmes is essential to promote population health by application of health risks assessment, individualised patient profiling and multi-parametric analysis, further used for cost-effective targeted prevention and treatments tailored to the person. The following healthcare areas are considered to be potentially strongly benefiting from the above proposed measures: suboptimal health conditions, sports medicine, stress overload and associated complications, planned pregnancies, periodontal health and dentistry, sleep medicine, eye health and disorders, inflammatory disorders, healing and pain management, metabolic disorders, cardiovascular disease, cancers, psychiatric and neurologic disorders, stroke of known and unknown aetiology, improved individual and population outcomes under pandemic conditions such as COVID-19. In a long-term way, a significantly improved healthcare economy is one of benefits of the proposed paradigm shift from reactive to Predictive, Preventive and Personalised Medicine (PPPM/3PM). A tight collaboration between all stakeholders including scientific community, healthcare givers, patient organisations, policy-makers and educators is essential for the smooth implementation of 3PM concepts in daily practice.
Reservoir Formation Damage; Reasons and Mitigation: A Case Study of the Cambrian–Ordovician Nubian ‘C’ Sandstone Gas and Oil Reservoir from the Gulf of Suez Rift Basin
Authors: Radwan Ahmed E. , Wood David A. , Abudeif A. M. , Attia M. M. , Mahmoud M. , Kassem Ahmed A. , Kania Maciej 
Published: August 2021

AbstractReservoir formation damage is a major problem that the oil and gas industry has to mitigate in order to maintain the oil and gas supply. A case study is presented that identifies the impacts of formation damage and their causes in the Nubian ‘C’ hydrocarbon reservoir within Sidki field located in the Southern Gulf of Suez, Egypt. In addition, a formation damage mitigation program was designed and implemented involving an effective stimulation treatment for each well experiencing reservoir damage. The data available for this study include core analysis to provide rock mineralogy and lithology; analysis of production fluid data; water chemistry; drilling fluid composition; perforations and well completion details; workover operations; and stimulation history. The diagnosis of formation damage based on the integrated assessment of the available data is associated with several benefits, (1) The integration of the data available helps provide a robust analysis of formation damage causes and in establishing suitable remediation actions, (2) Workover fluid is confirmed as the primary cause of reservoir damage in the studied well, (3) Several reservoir damage mechanisms were identified including water blockage, solids and filtrate invasion, fluid/rock interaction (deflocculation of kaolinite clay), salinity shock and/or high-sulfate content of the invaded fluid, (4) Irrespective of the potential causes of formation damage, the primary objective of a gas production company is to mitigate its effects and the integrated dataset helps to design appropriate and effective stimulation treatments to overcome formation damage, and (5) In gas reservoirs, especially low permeability ones, extra precautions are necessary to avoid potential reservoir damage due to workover fluid invasion.
Approximating delta invariants in the sense of plt complements
Authors: Zhou Chuyu 
Published: August 2021

AbstractWe show that delta invariant of a log Fano pair can be approximated by lc places of plt complements if it is no greater than one. Under the assumption that delta invariant (no greater than one) of a log Fano pair can be approximated by lc places of bounded plt complements, we show the existence of divisorial valuation computing delta invariant of this log Fano pair.
Why Can An Idea Be Like Nothing But Another Idea? A Conceptual Interpretation of Berkeley's Likeness Principle
Authors: WEST PETER 
Published: August 2021

AbstractBerkeley's likeness principle is the claim that ‘an idea can be like nothing but an idea’. The likeness principle is intended to undermine representationalism: the view (that Berkeley attributes to thinkers like Descartes and Locke) that all human knowledge is mediated by ideas in the mind that represent material objects. Yet, Berkeley appears to leave the likeness principle unargued for. This has led to several attempts to explain why Berkeley accepts it. In contrast to metaphysical and epistemological interpretations available in the literature, in this essay I defend a conceptual interpretation. I argue that Berkeley accepts the likeness principle on the basis of (1) his commitment to the transparency of ideas and (2) his account of resemblance, which he sets out in his works on vision. Thus, I provide an explanation for Berkeley's reasons for accepting the likeness principle that, appropriately, focuses on his views concerning ideas and likeness.
Disaster Risk Management Plans in Colombia: General Guidelines for Their Development
Authors: Díaz-Tamayo Alejandra María 
Published: August 2021

AbstractOver the years, Colombia has faced disaster situations that have generated changes in risk management models. These situations have brought suffering, destruction, and loss of human life, but have also served as lessons to develop procedures aimed at minimizing the risks caused by the presence of hazards. The objective of this article is to provide general evidence-based guidelines for formulating disaster risk management plans for each of the 3 action processes: risk awareness, risk reduction, and disaster management in Colombia. These plans can be achieved by preparing responses to different emergencies, which arise from threats in each of the possible scenarios, and are adverse events that alter the normal functioning of entities and communities. The implementation of these prevention strategies will allow communities to respond effectively to emergencies and recover rapidly in the face of adversity.
The rise of China between Global IR and area studies: an agenda for cooperation
Authors: Dian Matteo 
Published: August 2021

AbstractEast Asia is increasingly at the centre of debates among International Relations (IR) scholars. China's political, economic, and military ascendency is increasingly considered as a crucial test case for main approaches to IR. Despite this renewed attention, mainstream theories employed to analyse contemporary Asia are still remarkably Euro-centric. A wave of studies has argued in favour of a broad ‘decolonization’ of theoretical concepts used to analyse East Asia as well as other regions. These efforts have produced several distinct research agendas. Firstly, critical and post-colonial theorists have worked on the par destruens, highlighting the inherent Euro-centrism of many IR concepts and theories. Secondly, scholars such as Buzan and Acharya have promoted the idea of Global IR, seeking to advance a ‘non-Western’ and non-Euro-centric research agenda. This agenda has found fertile ground especially in China, where several scholars have tried to promote a Chinese School of IR. This article has three main purposes. Firstly, it briefly explores the issue of Eurocentrism in IR studies dedicated to East Asia. Secondly, it maps the theoretical debates aimed at overcoming it, looking in particular at the ‘Global IR’ research programme and the so-called Chinese School. Finally, it sketches a few other possible avenues of research for a very much needed cooperation between Global IR and area studies.
The smooth, spire-bearing brachiopods after the terminal Ordovician extinction through lower Llandovery in the central Oslo region, Norway
Authors: Baarli B. Gudveig 
Published: August 2021

AbstractStrata of the Solvik Formation in the central Oslo region (upper Hirnantian to upper Aeronian) are rich in atrypides that elucidate the evolution of this group. A few athyridide brachiopods are also present. Eleven taxa of smooth spire-bearers are described taxonomically using fossils and peels. Among these occur one new genus,Eisaella, and five new species:Eisaella uniplicata,Thulatrypa huangi,T.vikenensis, ?Becscia pentagona, andShelvothyris bivittata. Atrypides make up 30% (24 genera) of the total brachiopod genera in the Solvik Formation, more than one third of the known global atrypide fauna during that interval. Most are members of the family Lissatrypidae, illustrating the evolution of this group from upper Hirnantian and lower Silurian strata. These show close affinity to each other attesting to ongoing radiation. The new genusEisaellais a likely ancestor ofLissatrypa, whileMeifodiadisplays a gradual evolution through the formation. Atrypides were most diverse at the base and top of the Solvik Formation due to heterogony in environments and water depth, but were less diverse in the comparatively constant environmental setting of the late Rhuddanian time. The basal assemblages with few atrypides from shallow facies may be compared to the shallow Cathay Fauna of China. Most of the abundant Norwegian atrypide fauna is found in deeper water with few comparable faunas known globally. The Oslo region may have served as a center for the evolution and spread of atrypides immediately following the end-Ordovician glacial drawdown in sea level.UUID:http://zoobank.org/508dba95-5501-403d-9a4d-deeb324847c9
Determination of factors affecting milk yield, composition and udder morphometry of Hair and cross-bred dairy goats in a semi-intensive system
Authors: Erduran Hakan , Dag Birol 
Published: August 2021

AbstractIn this Research Communication we report milk yield, milk composition and udder morphometry of Hair, Alpine × Hair F1 (AHF1), and Saanen × Hair F1 (SHF1) cross-bred goat genotypes managed in a semi-intensive system. The SHF1 genotype had significantly higher lactation milk yield, fat yield, protein yield, and electrical conductivity than other genotypes, whilst AHF1 was intermediate. The milk fat, protein, lactose, solids-non-fat and total solids contents as well as pH and density of the Hair goat milk were significantly higher than the corresponding values of the cross-bred genotypes. The highest correlation amongst udder characteristics and production was between lactation milk yield and udder volume (P < 0.01; r = from 0.63 to 0.77). The results of this study suggest that crossbreeding can have a positive effect on the milk production characteristics of local goats, thereby reducing the pressure on the ecosystem, and suggest that udder measurements, especially volume, can be a helpful tool for estimating milk yield.
Reproductive characteristics of Ratabulus diversidens and Ambiserrula jugosa (Pisces: Platycephalidae) from continental shelf waters of south-eastern Australia
Authors: Barnes Lachlan M. , Gray Charles A. , Williamson Jane E. 
Published: August 2021

AbstractThe reproductive characteristics of co-occurring freespine flathead, Ratabulus diversidens, and mud flathead, Ambiserrula jugosa, that interact with fisheries across continental shelf waters of eastern Australia were examined. Samples were collected across three depth strata and two locations on a monthly basis over two years. Males of both species matured younger and at smaller total lengths (TL) than females. Estimated TL and age (years) at maturity (L50 and A50, respectively) of R. diversidens also varied between locations, but differences were not related to differential growth. Although some mature individuals of both species occurred year-round, they were most prevalent and gonadosomatic indices greatest, between the austral spring and autumn. Mature R. diversidens almost exclusively occurred in deeper offshore waters, whereas the opposite was evident for A. jugosa. Both species displayed asynchronous oocyte development, and were thus considered capable of spawning more than once throughout each spawning season. Potential batch fecundity was positively related to TL for R. diversidens, but not A. jugosa, possibly due to the small size of the latter species. The sex ratios for R. diversidens varied between locations and length categories, and like A. jugosa the larger categories were skewed towards females, a result of divergent growth between sexes. Macroscopic and microscopic evidence indicated both species were gonochoristic. The data provide new information for fisheries management consideration and contribute to the data-poor international knowledge base of platycephalid biology.
The Force Field Model applied to a Music Education teacher training framework in a South African context
Authors: De Villiers Ronel 
Published: August 2021

AbstractSouth African Higher Education Institution (HEI) Music Education (MusEd) lecturers’ perspectives regarding the contextual, institutional, biographical and programmatic forces that stem from the theoretical framework Samuel’s (2008) Force Field Model (FFM) were explored. The study was approached from an interpretivist paradigm and conceptually drew qualitative data generated from eight case studies to gain an in-depth understanding of the push and pull factors that influence professional practices. The major findings of the study indicated that lecturers should embrace transformation principles to decolonise the national curriculum. Biographic viewpoints have to be modified from a singular Western Classical viewpoint to integrate African Indigenous perspectives. To teach MusEd, elements and activities from diverse cultures as well as teach student teachers from diverse cultural backgrounds result in MusEd as a change agent to develop social cohesion between multicultural communities. Theoretical knowledge integrated with practical activities where the focus changes from achieving an individualistic perfect end product to the continuing process of ‘musicking’ together are proposed. The lecturers as facilitators, therefore, focus on a student-centred philosophy to guide student teachers’ development in MusEd. Insights gained from this study propose a future cosmopolitan teacher training framework.