bluuebunny/crossref_metadata_2025_split huggingface dataset:
Learning Sparse Log-Ratios for High-Throughput Sequencing Data
Authors: Gordon-Rodriguez Elliott , Quinn Thomas P. , Cunningham John P. 
Published: February 2021

AbstractThe automatic discovery of sparse biomarkers that are associated with an outcome of interest is a central goal of bioinformatics. In the context of high-throughput sequencing (HTS) data, andcompositional data(CoDa) more generally, an important class of biomarkers are the log-ratios between the input variables. However, identifying predictive log-ratio biomarkers from HTS data is a combinatorial optimization problem, which is computationally challenging. Existing methods are slow to run and scale poorly with the dimension of the input, which has limited their application to low- and moderate-dimensional metagenomic datasets. Building on recent advances from the field of deep learning, we presentCoDaCoRe, a novel learning algorithm that identifies sparse, interpretable, and predictive log-ratio biomarkers. Our algorithm exploits acontinuous relaxationto approximate the underlying combinatorial optimization problem. This relaxation can then be optimized efficiently using the modern ML toolbox, in particular, gradient descent. As a result, CoDaCoRe runs several orders of magnitude faster than competing methods, all while achieving state-of-the-art performance in terms of predictive accuracy and sparsity. We verify the outperformance of CoDaCoRe across a wide range of microbiome, metabolite, and microRNA benchmark datasets, as well as a particularly high-dimensional dataset that is outright computationally intractable for existing sparse log-ratio selection methods.1
Critical success factors for cost management in public-housing projects
Authors: Obi Lovelin Ifeoma , Arif Mohammed , Awuzie Bankole , Islam Rubina , Gupta Aman Deep , Walton Robert 
Published: February 2021

PurposeEffective cost performance is a crucial criterion measuring successful project management in public-housing projects. This paper aims to analyse the vital underlying factors surrounding the successful cost management process (CMP) outcomes in public housing projects (PHPs).Design/methodology/approachThe research was conducted in three stages. The first stage consisted of a detailed literature review to document success factors affecting cost performances and management. In stage two, brainstorming sessions were undertaken with construction experts knowledgeable in cost management practices and have been involved in PHPs. These sessions were used to refine those success factors for the PHPs settings and define their criticality with respect to the CMP stages using interpretive ranking process. In stage three, focus group sessions were performed to validate the interrelationships of the contextualised critical success factors.FindingsThe top three most critical factors for successful implementation and outcomes at all CMP stages in PHPs settings were found to relate to competencies, team qualities and collaborative practices of the project team. Early contractor involvement and effective construction planning and management also emerged relevant to the process.Practical implicationsGovernment project departments, project managers and construction organisations (consultants and contractors) need to commit and mandate continuous development of cost management competencies for all professionals engaged in PHPs. Channels supporting team integration and collaborative practices between design and construction teams are required to increase the likelihood of successful project cost management practice and outcomes in PHPs.Originality/valueThe research has developed a factor-process relationship model that can be used to improve and evaluate the efficacy of CMP implementation in PHP settings.
Determinants of research output submission in institutional repositories by faculty members in Nigerian universities
Authors: Onyebinama Colette Ogugua , Anunobi Chinwe Veronica , Onyebinama Uzochukwu Anelechi Ubaferem 
Published: February 2021

Purpose
This paper aims to determine and analyze the rate of content submission by lecturers in relation to type of university, discipline, academic qualification, rank and teaching experience and identified the determinants of research output submission by faculty members in Nigerian varsities.

Design/methodology/approach
The survey was conducted in six universities with functional institutional repositories in Southern Nigeria. Data collated through questionnaire from the university lecturers were analyzed using frequency distribution, percentages and regression analysis.

Findings
Results showed that submission of research output was higher for lecturers in Social Sciences than for those in the Sciences; the highest among those with doctorate degree, senior lecturers and those with 6–10 years of teaching experience. The rank of faculty members and the type of university were significant determinants of research output submission.

Research limitations/implications
The survey was limited to universities in Southern Nigeria with functional institutional repositories. There should be further investigations on same study in universities with functional institutional repositories in other regions in Nigeria.

Practical implications
Increased submission rate by faculty members will sustain the institutional repositories.

Social implications
Faculty members get in contact, make friends and engage in collaborative research.

Originality/value
This report contributes to the global knowledge and communication’s field through the provision of empirical evidence on the determinants of content submission in open access institutional repositories.
The effect of winning-losing perception on consumers’ variety-seeking behavior
Authors: Chang En-Chung , Wen Beixi , Tang Xiaofei 
Published: February 2021

Purpose
This study aims to investigate the effect of winning-losing perception, including the winning or losing result and the closeness of this result, on consumers’ subsequent variety-seeking behavior.

Design/methodology/approach
Four experimental designs, one with a modified version of the Tetris game, were used to show how and when winning or losing perceptions will influence individuals’ variety-seeking behavior.

Findings
Consumers who have failed in a competition or not achieved a goal tend to seek less variety in their later consumption than do consumers who have succeeded because losing feedback weakens consumers’ perception of their control of personal mastery. This effect only exists when the closeness of winning or losing is narrow (e.g. the success is just missed) and diminishes when the result is clear and obvious.

Research limitations/implications
The current study has systematically explored the interaction between winning-losing outcomes and the closeness of these outcomes.

Practical implications
This study offers marketing managers practical guidance on how to use competition results to conduct marketing activities, such as transmitting advertisements for classic flavors to those who have lost in a video game or properly increasing the proportion of new flavors or products in stores or vending machines near sports venues.

Originality/value
This research adds to the literature on competition, which has largely overlooked the possible moderating role of the closeness of the competition result and its influence on individuals’ follow-up irrelevant behaviors and it also adds to the work on variety-seeking behavior, which has not explored the impact of winning-losing perception.
Why medical journalism wins public health journalism: systems thinking recommendations for health-promoting media
Authors: Mohammadi Samira , Ramezankhani Ali , Montazeri Ali , Nasrollahi Akbar , Keshavarz Mohammadi Nastaran 
Published: February 2021

PurposeHealth-related issues are widely covered in news agencies by medical and health journalists. The quantity, format and quality of their coverage influence the general public as well as policymakers and professions. Current studies and observations suggest that news agencies are more dominated by medical topics (disease, symptoms, epidemiology, treatment and medicines) than general public health issues (risk prevention, health protection, education and promotion). This study explores the causes of the current situation in Iran and generates solutions for supporting health-promoting media that may also prove beneficial for other countries.Design/methodology/approachA qualitative study was conducted to explore the coverage of health-related topics in selected news agencies. Stakeholders, including health journalists, health professionals and public relations staff at the Iranian Ministry of Health and Medical Education were interviewed. Data were collected until data saturation was reached. The transcripts of all the 17 interviews conducted were analyzed using conventional content analysis.FindingsFour groups of causes were identified, including individual factors, organizational factors, socioeconomic factors and the different nature of medicine and public health. The participants proposed several solutions that were classified into three categories, including the empowerment of stakeholders through capacity development, organizational change and mutual communication and culture change.Originality/valueCreating health-promoting media is a complex but urgent task, and providing a comprehensive and deep understanding of the dynamic interdependencies of the multiple factors at play in it and developing and implementing the most effective interventions for it requires a systematic approach.
No road is long with good company. What factors affect Ph.D. student’s satisfaction with their supervisor?
Authors: Seeber Marco , Horta Hugo 
Published: February 2021

PurposeHow frequently may be advisable for a supervisor to meet a PhD student? Are PhD students more satisfied if supervised by someone of the same gender, nationality or with common research interests? Thus far, we lack quantitative evidence regarding similar crucial aspects of managing PhD supervision. The goal of this study is hence to investigate what factors affect Ph.D. students' satisfaction about the professional and personal relationships with their supervisors.Design/methodology/approachWe focus on the characteristics of the interactions between the student and the supervisor, controlling for other important factors, namely, the supervisor's and student's traits, and the characteristics of the context. We employ survey responses from 971 Ph.D. students at two public, research-oriented and internationally renowned universities in Hong Kong and South Korea.FindingsThe results show the importance of meeting the supervisor at least once per week. Students are more satisfied of the relationship with their supervisor when they have similar research interests, whereas a key finding is that similarity in terms of gender or nationality does not matter. We also found remarkable differences between disciplines in the level of satisfaction (up to 30%), and that students are more satisfied when the supervisor is strongly involved in international research, whereas satisfaction is negatively affected by the number of Ph.D. students supervised.Originality/valueThe article's findings suggest that students are not more satisfied of their relationship with their supervisors when they have the same gender or nationality, whereas it is other traits of their interaction, such as the frequency of meetings and the similarity of research interest, which matter.
Towards understanding a football club’s social media network: an exploratory case study of Manchester United
Authors: Guzmán Erick Méndez , Zhang Ziqi , Ahmed Wasim 
Published: February 2021

Purpose
The purpose of this work is to study how different stakeholders of a football club engage with interactions online through Twitter. It analyses the football club’s Twitter network to discover influential actors and the topic of interest in their online communication.

Design/methodology/approach
The authors analysed the social networks derived from over two million tweets collected during football matches played by Manchester United. The authors applied social network analysis to discover influencers and sub-communities and performed content analysis on the most popular tweets of the prominent influencers.

Findings
Sub-communities can be formed around current affairs that are irrelevant to football, perhaps due to opportunistic attempts of using the large networks and massive attention during football matches to disseminate information. Furthermore, the popularity of tweets featuring different topics depends on the types of influencers involved.

Practical implications
The methods can help football clubs develop a deeper understanding of their online social communities. The findings can also inform football clubs on how to optimise their communication strategies by using various influencers.

Originality/value
Compared to previous research, the authors discovered a wide range of influencers and denser networks characterised by a smaller number of large clusters. Interestingly, this study also found that bots appeared to become influential within the network.
Intangible supply chain complexity, organizational structure and firm performance
Authors: Pant Pushpesh , Dutta Shantanu , Sarmah S.P. 
Published: February 2021

PurposeThe purpose of this paper is to conduct a large-sample empirical examination of how intangible supply chain complexity impacts firm performance in light of a firm's organizational structure.Design/methodology/approachThe study uses panel data from 2,580 Indian manufacturing firms and constructs empirical proxy for intangible supply chain complexity, i.e. CHQ distance from major cities. The proposed conceptual model is grounded in the dynamic capability view (DCV) and social network theory (SNT). Multivariate regression analyses are performed to investigate the effect of intangible complexity on firm performance.FindingsResults show that intangible supply chain complexity, as proxied by “CHQ distance from major cities”, negatively affects firm performance and a firm's organizational structure plays an important role in conceiving CHQ locational strategies. Firms with interconnected supply chain and social network (e.g. business group firms) have a higher propensity to locate their CHQs farther away from major cities, and business group firms that have more distantly located CHQs experience better financial performance compared to independent firms (with less network resources).Originality/valueIn light of the supply chain literature and relevant theories, the study conceptualizes intangible supply chain complexity as “CHQ distance from major cities” and deepens our understanding of the relationship between intangible complexity and firm performance in light of organizational structure. Further, it develops an objective understanding of intangible supply chain complexity by relying on secondary panel data.
City branding of the “music-design-culinary” as urban tourism of Bandung, West Java
Authors: Bustomi Thomas , Avianto Bhakti Nur 
Published: February 2021

Purpose
Bandung city had constructed new facilities in urban areas or supplemented existing facilities to create a city branding of music-design-culinary. This paper aims to assess their potential as new tourist areas for urban. This study very little research explicitly to discuss new phenomena tourism from urban areas that raise the image of three branding concepts at once.

Design/methodology/approach
Qualitative research more emphasized meaning and process analysis. Data analysis was carried out by looking at the status of an urban community, an object and a set of conditions in the thought system or current cases. The supporting data analysis technique used in this research is spatial analysis overlay is one of the basic ways to create spatial relationships between music, design and culinary by processing the result SWOT analysis factor.

Findings
Three forms of brand imaging development can ultimately lift new changes in strengthening relationships for building a good image of the tourism city with visitors.

Originality/value
For developing a new branding that can be implemented, the actors necessary to identify and assess internal and external factors policy for further formulation development of tourism city strategy. These articles very few research to explore discuss new phenomena in urban tourism that raise the image of three branding concepts at once. The present work was a modest effort to fill this gap literature with uses a compilation of research findings separately from city branding in various cities used as a conceptual basis and a comparative analysis is then conducted of three schemes.
Experimental study on line-contact elastohydrodynamic grease lubrication properties of surface-textured rollers
Authors: Yang Fuqin , Hu Dexing , Xiao Qianhao , Zhao Shun 
Published: February 2021

Purpose
This paper aims to study line-contact elastohydrodynamic grease lubrication properties of surface-textured rollers as well as the effect of different crown widths (dw) on oil film thickness under textured conditions.

Design/methodology/approach
The laser processing method was used to make the micro-texture on the surface of GCr15 steel rollers; lithium grease was used as the lubricant, and line-contact elastohydrodynamic grease lubrication experiments under pure sliding conditions were performed on light interference elastohydrodynamic-lubricated experimental table.

Findings
The results show that the line-contact elastohydrodynamic grease lubrication is closely related to the textured crown width of steel rollers. At low speeds and light loads, texturing has an inevitable inhibitory effect on the formation of the lubricating oil film, and the smaller the width of the crown area, the more obvious the inhibitory effect, which is not conducive to the improvement of the lubrication condition. At high speeds and high loads, the textured roller with dw = 1 mm has the largest oil film thickness and shows better lubrication performance.

Originality/value
At present, there is little research on the surface texture of line-contact friction pairs. This work explores the effect of different textured crown width on the lubricating properties of line-contact elastohydrodynamic grease lubrication by experiment. It provides a new theoretical basis for the subsequent practical application of surface texture technology.
Conceptual and influential structure of Takaful literature: a bibliometric review
Authors: Nasir Adeel , Farooq Umar , Khan Ashraf 
Published: February 2021

Purpose
The purpose of this research is to provide a comprehensive review of key influential aspects and conceptual structure of Takaful literature.

Design/methodology/approach
The authors review 149 journal articles using bibliometric citation analysis, co-word analysis and citation histograms. However, the authors have introduced a new index of keywords for co-word analysis.

Findings
The results purpose four research clusters of Takaful literature. The first theme compared Takaful with conventional insurance from various perspectives. Second theme explored the business model and sharia-compliant issues. Third theme applied the marketing concepts and examined the customer behaviour such as commitment, loyalty, satisfaction or awareness. Fourth theme examined risk management, investment and corporate governance issues. This research also identified the structure of variables studied in each theme.

Originality/value
This paper follows a very novel and trending bibliometric approach and explores what has been published, encompassing all aspects of Takaful literature. This study also presents 22 future research directions which are either missing or less researched in Takaful literature.
International school teachers: precarity during the COVID-19 pandemic
Authors: Bailey Lucy 
Published: February 2021

PurposeThis article explores the initial impact of the COVID-19 pandemic on international school teachers, using the findings to theorise agency and elective precarity amongst self-initiated, middling expatriates.Design/methodology/approachContent analysis of online posts on a teaching abroad discussion forum is used to critically examine the thesis that international school educators form part of a global precariat (Bunnell, 2016; Poole, 2019a, 2019b). Thematic analysis charts participants' discussion of aspects of precarity as consequences of the pandemic.FindingsThe data suggest that whilst dimensions of precarity have been exacerbated by the pandemic some dimensions of privilege remain. The term elective precarity is employed to describe the position of international school teachers, and it is noted that the pandemic has eroded the sense of agency within precarity. Posts suggest that teachers are reluctant to be globally mobile when lacking this sense of agency.Research limitations/implicationsFurther research is needed to establish whether agency and elective precarity are useful concepts for exploring the experiences of other self-initiated expatriates during the pandemic. There is a need for further research into the supply of international school educators as key enablers of other forms of global mobility.Originality/valueThe paper proposes two new concepts, elective precarity and agency within precarity, to capture the discourse of self-initiated expatriates. It contributes to the emerging literature charting the impact of the pandemic on self-initiated expatriation.
Marketing strategies in communicating CSR in the Muslim market of the United Arab Emirates: insights from the banking sector
Authors: Georgiadou Effrosyni , Nickerson Catherine 
Published: February 2021

Purpose
This paper aims to explore the online corporate social responsibility (CSR) communication by domestic and global banks operating in the United Arab Emirates.

Design/methodology/approach
Through a qualitative content analysis, the study examines the strategies banks use to market their CSR initiatives on their corporate websites. CSR marketing strategies are classified with reference to Kotler and Lee’s (2005) categorization.

Findings
The analysis indicates that overall, all CSR marketing strategies, as proposed by Kotler and Lee (2005), are used by the domestic UAE banks with the most frequently used being cause-promotion, philanthropy and socially responsible business practices. Government owned and conventional banks display patterns congruent to the communications observed in the global sample. Islamic banks have a less diversified approach relying mostly on philanthropy with only one Islamic bank using four of the six strategies.

Originality/value
The present study provides insight into how CSR is communicated within one of the largest industries in the fast-growing economy of the UAE. The observations reported here could help corporate communication practitioners and managers in domestic corporations that contribute to the Islamic economy to understand how to benchmark better and to communicate more effectively about their CSR.