bluuebunny/crossref_metadata_2025_split huggingface dataset:
Post lockdown COVID-19 seroprevalence and circulation at the time of delivery, France
Authors: Mattern Jérémie , Vauloup-Fellous Christelle , Zakaria Hoda , Benachi Alexandra , Carrara Julie , Letourneau Alexandra , Bourgeois-Nicolaos Nadège , De Luca Daniele , Doucet-Populaire Florence , Vivanti Alexandre J. 
Published: July 2020

AbstractBackgroundTo fight the COVID-19 pandemic, lockdown has been decreed in many countries worldwide. The impact of pregnancy as a severity risk factor is still debated, but strict lockdown measures have been recommended for pregnant women.ObjectivesTo evaluate the impact of the COVID-19 pandemic and lockdown on the seroprevalence and circulation of SARS-CoV-2 in a maternity ward in an area that has been significantly affected by the virus.Study designProspective study at the Antoine Béclère Hospital maternity ward (Paris area, France) from May 4 (one week before the end of lockdown) to May 31, 2020 (three weeks after the end of lockdown). All patients admitted to the delivery room during this period were offered a SARS-CoV-2 serology test as well concomitant SARS-CoV-2 RT-PCR on a nasopharyngeal sample.ResultsA total of 249 women were included. Seroprevalence of SARS-CoV-2 was 8%. The RT-PCR positive rate was 0.5%. 47.4% of the SARS-CoV-2-IgG-positive pregnant women never experienced any symptoms. A history of symptoms during the epidemic, such as fever, myalgia and anosmia, was suggestive of previous infection.ConclusionsThree weeks after the end of lockdown, SARS-CoV-2 infections were scarce in our region. A high proportion of SARS-CoV-2-IgG-negative pregnant women must be taken into consideration in the event of a resurgence of the pandemic in order to adapt public health measures to reduce exposure to the virus, such as social distancing and teleworking for this specific population.
Dental ontogeny in the most primitive bony fishLophosteusreveals the developmental relationship between teeth and dermal odontodes
Authors: Chen Donglei , Blom Henning , Sanchez Sophie , Tafforeau Paul , Märss Tiiu , Ahlberg Per E. 
Published: July 2020

AbstractOntogenetic data obtained by synchrotron microtomography of a marginal jawbone ofLophosteus superbus(Late Silurian, 422 Million years old), the phylogenetically basalmost stem osteichthyan, reveal developmental relationships between teeth and ornament that are not obvious from the adult morphology. The earliest odontodes are two longitudinal founder ridges formed at the ossification center. Subsequent odontodes that are added lingually to the ridges turn into conical teeth and undergo cyclic replacement, while those added labially achieve a stellate appearance. The stellate odontodes deposited directly on the bony plate are aligned with the alternate files of the teeth. Successive odontodes overgrowing the labial tooth rows become tooth-like and the replacement teeth near to them are ornament-like. We propose that teeth and ornament are modifications of a single odontode system regulated and differentiated by the oral and dermal signals; signal cross-communication between the two domains can occur around the oral-dermal boundary.
Effect of Hydroxychloroquine in Hospitalized Patients with COVID-19: Preliminary results from a multi-centre, randomized, controlled trial
Authors: Horby Peter , Mafham Marion , Linsell Louise , Bell Jennifer L , Staplin Natalie , Emberson Jonathan R , Wiselka Martin , Ustianowski Andrew , Elmahi Einas , Prudon Benjamin , Whitehouse Anthony , Felton Timothy , Williams John , Faccenda Jakki , Underwood Jonathan , Baillie J Kenneth , Chappell Lucy , Faust Saul N , Jaki Thomas , Jeffery Katie , Lim Wei Shen , Montgomery Alan , Rowan Kathryn , Tarning Joel , Watson James A , White Nicholas J , Juszczak Edmund , Haynes Richard , Landray Martin J 
Published: July 2020

ABSTRACTBackgroundHydroxychloroquine and chloroquine have been proposed as treatments for coronavirus disease 2019 (COVID-19) on the basis of in vitro activity, uncontrolled data, and small randomized studies.MethodsThe Randomised Evaluation of COVID-19 therapy (RECOVERY) trial is a randomized, controlled, open-label, platform trial comparing a range of possible treatments with usual care in patients hospitalized with COVID-19. We report the preliminary results for the comparison of hydroxychloroquine vs. usual care alone. The primary outcome was 28-day mortality.Results1561 patients randomly allocated to receive hydroxychloroquine were compared with 3155 patients concurrently allocated to usual care. Overall, 418 (26.8%) patients allocated hydroxychloroquine and 788 (25.0%) patients allocated usual care died within 28 days (rate ratio 1.09; 95% confidence interval [CI] 0.96 to 1.23; P=0.18). Consistent results were seen in all pre-specified subgroups of patients. Patients allocated to hydroxychloroquine were less likely to be discharged from hospital alive within 28 days (60.3% vs. 62.8%; rate ratio 0.92; 95% CI 0.85-0.99) and those not on invasive mechanical ventilation at baseline were more likely to reach the composite endpoint of invasive mechanical ventilation or death (29.8% vs. 26.5%; risk ratio 1.12; 95% CI 1.01-1.25). There was no excess of new major cardiac arrhythmia.ConclusionsIn patients hospitalized with COVID-19, hydroxychloroquine was not associated with reductions in 28-day mortality but was associated with an increased length of hospital stay and increased risk of progressing to invasive mechanical ventilation or death.FundingMedical Research Council and NIHR (Grant ref: MC_PC_19056).Trial registrationsThe trial is registered with ISRCTN (50189673) andclinicaltrials.gov(NCT04381936).
Equitable optimized airspace sectorization based on constraint programming and OWA aggregation
Authors: Mogtit Abdessamed , Aribi Noureddine , Lebbah Yahia , Lagha Mohand 
Published: July 2020

Purpose
Airspace sectorization is an important task, which has a significant impact in the everyday work of air control services. Especially in recent years, because of the constant increase in air traffic, existing airspace sectorization techniques have difficulties to tackle the large air traffic volumes, creating imbalanced sectors and uneven workload distribution among sectors. The purpose of this paper is to propose a new approach to find optimal airspace sectorization balancing the traffic controller workload between sectors, subject to airspace requirements.

Design/methodology/approach
A constraint programming (CP) model called equitable airspace sectorization problem (EQASP) relies on ordered weighted averaging (OWA) multiagent optimization and the parallel portfolio architecture has been developed, which integrates the equity into an existing CP approach (Trandac et al., 2005). The EQASP was evaluated and compared with the method of Trandac et al. (2005), according to the quality of workload balancing between sectors and the resolution performance. The comparison was achieved using real air traffic low-altitude network data sets of French airspace for five flight information regions for 24 h a day and the Algerian airspace for three various periods (off peak hours, peak hours and 24 h).

Findings
It has been demonstrated that the proposed EQASP model, which is based on OWA multicriteria optimization method, significantly improved both the solving performance and the workload equity between sectors, while offering strong theoretical properties of the balancing requirement. Interestingly, when solving hard instances, our parallel sectorization tool can provide, at any time, a workable solution, which satisfies all geometric constraints of sectorization.

Practical implications
This study can be used to design well-balanced air sectors in terms of workload between control units in the strategic phase. To fulfil the airspace users’ constraints, one can refer to this study to assess the capacity of each air sector (especially the overloaded sectors) and then adjust the sector’s shape to respond to the dynamic changes in traffic patterns.

Social implications
This theoretical and practical approach enables the development and support of the definition of the “Air traffic management (ATM) Concept Target” through improvements in human factors specifically (balancing workload across sectors), which contributes to raising the level of capacity, safety and efficiency (SESAR Vision of ATM 2035).

Originality/value
In their approach, the authors proposed an OWA-based multiagent optimization model, ensuring the search for the best equitable solution, without requiring user-defined balancing constraints, which enforce each sector to have a workload between two user-defined bounds (Wmin, Wmax).
A new three-phase multilevel DC-link inverter topology with reduced switch count for photovoltaic applications
Authors: P. Anbarasan , V. Krishnakumar , S. Ramkumar , S. Venkatesan 
Published: July 2020

Purpose
This paper aims to propose a new MLI topology with reduced number of switches for photovoltaic applications. Multilevel inverters (MLIs) have been found to be prospective for renewable energy applications like photovoltaic cell, as they produce output voltage from numerous separate DC sources or capacitor banks with reduced total harmonic distortion (THD) because of a staircase like waveform. However, they endure from serious setbacks including larger number of capacitors, isolated DC sources, associated gate drivers and increased control difficulty for higher number of voltage levels.

Design/methodology/approach
This paper proposes a new three-phase multilevel DC-link inverter topology overpowering the previously mentioned problems. The proposed topology is designed for five and seven levels in Matlab/Simulink with gating pulse using multicarrier pulse width modulation. The hardware results are shown for a five-level MLI to witness the viability of the proposed MLI for medium voltage applications.

Findings
The comparison of the proposed topology with other conventional and other topologies in terms of switch count, DC sources and power loss has been made in this paper. The reduction of switches in proposed topology results in reduced power loss. The simulation and hardware show that the output voltage yields a very close sinusoidal voltage and lesser THD.

Originality/value
The proposed topology can be extended for any level of output voltage which is helpful for sustainable source application.
Dynamic safety prewarning mechanism of human–machine–environment using computer vision
Authors: Xu Wenpei , Wang Ting-Kwei 
Published: July 2020

PurposeThis study provides a safety prewarning mechanism, which includes a comprehensive risk assessment model and a safety prewarning system. The comprehensive risk assessment model is capable of assessing nine safety indicators, which can be categorised into workers’ behaviour, environment and machine-related safety indicators, and the model is embedded in the safety prewarning system. The safety prewarning system can automatically extract safety information from surveillance cameras based on computer vision, assess risks based on the embedded comprehensive risk assessment model, categorise risks into five levels and provide timely suggestions.Design/methodology/approachFirstly, the comprehensive risk assessment model is constructed by adopting grey multihierarchical analysis method. The method combines the Analytic Hierarchy Process (AHP) and the grey clustering evaluation in the grey theory. Expert knowledge, obtained through the questionnaire approach, contributes to set weights of risk indicators and evaluate risks. Secondly, a safety prewarning system is developed, including data acquisition layer, data processing layer and prewarning layer. Computer vision is applied in the system to automatically extract real-time safety information from the surveillance cameras. The safety information is then processed through the comprehensive risk assessment model and categorized into five risk levels. A case study is presented to verify the proposed mechanism.FindingsThrough a case study, the result shows that the proposed mechanism is capable of analyzing integrated human-machine-environment risk, timely categorising risks into five risk levels and providing potential suggestions.Originality/valueThe comprehensive risk assessment model is capable of assessing nine risk indicators, identifying three types of entities, workers, environment and machine on the construction site, presenting the integrated risk based on nine indicators. The proposed mechanism, which adopts expert knowledge through Building Information Modeling (BIM) safety simulation and extracts safety information based on computer vision, can perform a dynamic real-time risk analysis, categorize risks into five risk levels and provide potential suggestions to corresponding risk owners. The proposed mechanism can allow the project manager to take timely actions.
The logic of attraction: exploring the institutional complexity of job preferences
Authors: Petry Tanja , Treisch Corinna , Bullinger Bernadette 
Published: July 2020

PurposeApplying the institutional logics perspective to applicant attraction, this study investigates the level of uniformity among preferences for consulting job attributes associated with the institutional logics of the corporation, the profession and the family, and tests for the influence of anticipatory socialization differences.Design/methodology/approachThe study uses a discrete choice experiment with 232 business students. A hierarchical Bayes approach to conjoint analysis uncovers part-worth heterogeneity and allows for subsequent cluster and regression analysis of the choice data.FindingsThe findings identify a dominant job-oriented preference type and a minor career-oriented preference type. Anticipatory socialization through personal prior work experience and the occupation of friends decreases adherence to the logic of profession and increases the relevance of the family logic. The parents' occupation has only a minimal influence on preferences.Practical implicationsThe study provides attribute-based recommendations on how professional service firms can effectively address the complex expectations of potential applicants in their job ads for an entry position and underlines the role of intra-generational reference groups as important anticipatory socializers.Originality/valueBy testing individual socialization effects at the pre-hire stage and beyond the organizational level, the study fills a void in both the recruitment and the institutional literature.
Shaping the future of hospitality and travel: trends in energy, environmental, and labor force and work
Authors: Cetron Marvin J. , Davies Owen , DeMicco Fred , Song Mohan 
Published: July 2020

PurposeThe purpose of this study is to continue to forecast trends in the hospitality and travel industry with practical implications.Design/methodology/approachThis study is the updated version of our previous list of trends. The new edition updates the previous report on the implications for the hospitality industry of major trends now shaping the future. We focus mainly on energy, environmental and labor force and work trends and discuss sub-trends under each trend. We then implicate how the trends affect the Hospitality and Travel industry.FindingsWe shared implications under each sub-trends.Originality/valueThe value of this article is to analyze the impact of the environment on the Hospitality and Travel industry from a macro perspective. For each trend, we implicate an estimate for future trends. We hope this article sheds light on the prediction of the Hospitality and Travel industry.
Linkages between group level task conflict and individual level outcomes in non-routine technical jobs
Authors: Yousaf Amna , Shaukat Razia , Umrani Waheed Ali 
Published: July 2020

Purpose
This study aims to build on the existing research regarding workplace conflict by arguing that task conflict (TC) leads to resource gains for individuals with non-routine technical jobs, which increases individuals’ work engagement (WE) and leads to positive individual-level outcomes. Specifically, this study uses a resource investment/acquisition approach with the aim of offering insight into the consequences of group-level TC on individual-level outcomes, including task performance (TP), contextual performance and turnover intention.

Design/methodology/approach
Multi-rater data was collected from 508 telecom engineers and 35 supervisors working in Pakistan’s telecom sector. The engineers were divided into 31 teams and the data were analysed using confirmatory factor analyses and structural equation modelling to test the interrelationships among study constructs.

Findings
As expected, TC was positively correlated with both TP and contextual performance, while it was negatively correlated with turnover intention; these relationships were mediated by WE. The results reveal that TC in technical jobs leads to resource gains and, through WE, facilitates task and contextual performances at the individual level. Similarly, TC mitigates individual-level turnover intention through the mediation of WE.

Originality/value
The current study contributes to the literature on the conflict by delineating a resource investment/acquisition process within the conservation of resources theory, whereby TC (an exchange and acquisition of cognitive resources) leads to resource investment (in the form of WE), which, in turn, leads to positive individual-level outcomes.
Conceptual framework of internal Sharīʿah audit effectiveness factors in Islamic banks
Authors: Algabry Latifah , Alhabshi Syed Musa , Soualhi Younes , Alaeddin Omar 
Published: July 2020

Purpose
The main purpose of this research is to figure out the most effective determinants that play a vital role in enhancing the effectiveness of the internal Sharīʿah audit in the Islamic banking industry.

Design/methodology/approach
This paper reviews the existing literature to build comprehensive knowledge that would assist in determining the main factors that impact on the effectiveness of Sharīʿah audit in Islamic banks.

Findings
This research proposes a conceptual framework of factors that impact on Sharīʿah audit effectiveness in IBs based on previously published studies. The proposed framework includes external and internal factors as well as internal Sharīʿah audit structure, process and requirements.

Practical implications
First, the regulators need to provide a detailed framework for Sharīʿah audit which covers the main requirements for effective Sharīʿah governance. Second, Islamic financial institutions (IFIs) need to pay more attention to following the Sharīʿah audit process in order to achieve the objective of effective Sharīʿah governance. Finally, the dearth of empirical research on the role and effectiveness of Sharīʿah audit in Islamic banking highlights the need to develop an appropriate methodology to enhance the study of the effectiveness of Sharīʿah governance practices.

Originality/value
The Sharīʿah ensures compliance with its rules and regulations and enhances the soundness and credibility of the Islamic finance industry. This study identifies a number of issues that require further investigation in order to establish a better system of Sharīʿah audit and to identify the factors that affect Sharīʿah auditing practices. This paper is unique in covering the main elements that have influence on the effectiveness of Sharīʿah audit and proposes them in one framework.
Leveraging sport as a venue and vehicle for transformative sustainability learning
Authors: Orr Madeleine , McCullough Brian P. , Pelcher Jamee 
Published: July 2020

Purpose
Given greater awareness of environmental issues and the acceleration of climate change, universities are increasingly requiring undergraduate students to complete coursework in environmental issues. Research has shown that environmental courses hosted in science departments can be too challenging for students with no science background. Thus, new approaches to general environmental education at the undergraduate level are necessary. This paper aims to advance three transformative sustainability learning (TSL) interventions that leverage sport as the living laboratory for environmental education through examining green teams and in depth sport venue tours.

Design/methodology/approach
This paper details the experimental application of three TSL interventions in undergraduate sport courses.

Findings
Each intervention produced lasting benefits for several parties. Students benefit from greater exposure to sport management organizations and a hands-on learning opportunity. Sport organizations benefit from a promotional opportunity to showcase their sustainability efforts, improved sustainability practices at their facilities and the opportunity to leverage the students’ involvement for fan engagement initiatives

Research limitations/implications
The interventions presented in this paper were developed in a North American sport context, however, there is a considerable opportunity to develop similar interventions in any region where sport organizations exist.

Originality/value
Despite being one of the most universally appreciated and visible industries, the sport industry has yet to be used as a site for meaningful sustainability learning interventions. The interventions presented herein introduce the opportunity to leverage students’ love of sport for outcomes for all parties: the students, the host organization and sport fans.
The relationship between task-oriented leadership style, psychological capital, job satisfaction and organizational commitment: evidence from Vietnamese small and medium-sized enterprises
Authors: Huynh The Nguyen , Hua Nguyen Thuy An 
Published: July 2020

PurposeThis study examines the relationship between task-oriented leadership style, psychological capital, job satisfaction and organizational commitment: evidence from Vietnamese small and medium-sized enterprises.Design/methodology/approachThe method employed in the research is the Structural Equation Modeling (SEM) for testing hypotheses of data collected from a sample of 800 employees working in small and medium-sized enterprises in Vietnam.FindingsThe results show that the task-oriented leadership style has a positive impact on organizational commitment, limits job satisfaction and no obvious association with the psychological capital of employees. Besides, job satisfaction and psychological capital play an important role in the organizational commitment of employees in small and medium-sized enterprises of Vietnam.Originality/valueThis paper aims to shed light on a less fully explored topic for organizational behavior in small and medium-sized enterprises in emerging markets like Vietnam. In contrast to extensive studies on the participative and supportive leader, this study focuses on task-oriented leadership style in the testing and analysis to understand the theory of leadership style, psychological capital, job satisfaction and organizational commitment in emerging markets and provides more knowledge on employee behavior management for companies in Vietnam. This is a unique contribution to the original value of this article.