bluuebunny/crossref_metadata_2025_split huggingface dataset:
The effects of AGN feedback on the structural and dynamical properties of Milky Way-mass galaxies in cosmological simulations
Authors: Irodotou Dimitrios , Fragkoudi Francesca , Pakmor Ruediger , Grand Robert J J , Gadotti Dimitri A , Costa Tiago , Springel Volker , Gómez Facundo A , Marinacci Federico 
Published: April 2022

ABSTRACT
Feedback from active galactic nuclei (AGNs) has become established as a fundamental process in the evolution of the most massive galaxies. Its impact on Milky Way (MW)-mass systems, however, remains comparatively unexplored. In this work, we use the auriga simulations to probe the impact of AGN feedback on the dynamical and structural properties of galaxies, focusing on the bar, bulge, and disc. We analyse three galaxies – two strongly and one unbarred/weakly barred – using three setups: (i) the fiducial auriga model, which includes both radio and quasar mode feedback, (ii) a setup with no radio mode, and (iii) one with neither the radio nor the quasar mode. When removing the radio mode, gas in the circumgalactic medium cools more efficiently and subsequently settles in an extended disc, with little effect on the inner disc. Contrary to previous studies, we find that although the removal of the quasar mode results in more massive central components, these are in the form of compact discs, rather than spheroidal bulges. Therefore, galaxies without quasar mode feedback are more baryon-dominated and thus prone to forming stronger and shorter bars, which reveals an anticorrelation between the ejective nature of AGN feedback and bar strength. Hence, we report that the effect of AGN feedback (i.e. ejective or preventive) can significantly alter the dynamical properties of MW-like galaxies. Therefore, the observed dynamical and structural properties of MW-mass galaxies can be used as additional constraints for calibrating the efficiency of AGN feedback models.
Clusters of galaxies up to z = 1.5 identified from photometric data of the Dark Energy Survey and unWISE
Authors: Wen Z L , Han J L 
Published: April 2022

ABSTRACT
Using photometric data from the Dark Energy Survey and the Wide-field Infrared Survey Explorer, we estimate photometric redshifts for 105 million galaxies using the nearest-neighbour algorithm. From such a large data base, 151 244 clusters of galaxies are identified in the redshift range of 0.1 &lt; z ≲ 1.5 based on the overdensity of the total stellar mass of galaxies within a given photometric redshift slice, among which 76 826 clusters are newly identified and 30 477 clusters have a redshift z &gt; 1. We cross-match these clusters with those in the catalogues identified from the X-ray surveys and the Sunyaev–Zel’dovich (SZ) effect by the Planck, South Pole Telescope and Atacama Cosmology Telescope surveys, and get the redshifts for 45 X-ray clusters and 56 SZ clusters. More than 95 per cent SZ clusters in the sky region have counterparts in our catalogue. We find multiple optical clusters in the line of sight towards about 15 per cent of SZ clusters.
Transient behaviour of three SU UMa-type dwarf novae: AR Pic, QW Ser, and V521 Peg
Authors: Szegedi Hélène , Charles Philip A , Meintjes Pieter J , Odendaal Alida 
Published: April 2022

ABSTRACT
Changes in the supercycle lengths of some SU UMa-type dwarf novae have been detected by other studies, and indicate that the mass transfer rates noticeably decrease over time. We investigated the supercycle lengths of three SU UMa-type dwarf novae: AR Pic, QW Ser, and V521 Peg, to determine if they have detectable changes in their supercycles. We present the results of optical spectroscopic and photometric observations of these sources. Our observations were conducted in 2016 and 2017 at the Boyden Observatory and the Sutherland station of the South African Astronomical Observatory. The quiescent results indicated that all three sources are typical SU UMa-type dwarf novae. We also present results of AR Pic and QW Ser in outburst and of V521 Peg during a precursor outburst and superoutburst. Light curves were supplemented by the Catalina Real-Time Transient Survey, the ASAS-3 and ASAS-SN archives, and the AAVSO International Database in order to investigate the long-term behaviour of these sources. Our results combined with catalogued properties for all short-period dwarf novae show a possible relationship between the supercycle time in SU UMa systems and their orbital periods, which is interpreted as the decline in the mass transfer rate as systems evolve towards and away from the ‘period minimum’. At the shortest orbital periods, SU UMa systems are almost indistinguishable from WZ Sge systems. However, we propose that the scaleheight between the secondary’s photosphere and L1 may be a factor that distinguish the SU UMa subclasses.
Rapidly alternating flux states of GX 339–4 during its 2021 outburst captured by Insight–HXMT
Authors: Liu Honghui , Jiang Jiachen , Zhang Zuobin , Bambi Cosimo , Ji Long , Kong Lingda , Zhang Shu 
Published: April 2022

ABSTRACT
The low-mass X-ray binary GX 339–4 entered a new outburst in 2021. At the end of the hard to soft transition of this outburst, Insight–HXMT found that the source rapidly alternated between low flux and high flux states on a time-scale of hours. Two high flux states lasted only for a period comparable to the orbital period of the observatory. Time-resolved spectral analysis shows that the sudden changes of flux are confined in the hard X-ray band (&gt;4 keV). The variable non-thermal emission, including the power-law continuum from the corona and the reflected emission from the inner accretion disc, is responsible for the observed variability. The strength of the disc thermal emission and the inner radius of the accretion disc are consistent between the two flux states. Assuming the lamppost geometry, our best-fitting disc reflection models suggest a very low corona height (within 3 Rg) and there is no evidence of significant variation in the corona geometry either. The observed rapidly alternating flux states suggest that the intrinsic power of the corona must change during the state transition. We discuss possible mechanisms for the observed sudden changes in the coronal power of GX 339–4.
DEPP: Deep Learning Enables Extending Species Trees using Single Genes
Authors: Jiang Yueyu , Balaban Metin , Zhu Qiyun , Mirarab Siavash 
Published: April 2022

Abstract
Placing new sequences onto reference phylogenies is increasingly used for analyzing environmental samples, especially microbiomes. Existing placement methods assume that query sequences have evolved under specific models directly on the reference phylogeny. For example, they assume single-gene data (e.g., 16S rRNA amplicons) have evolved under the GTR model on a gene tree. Placement, however, often has a more ambitious goal: extending a (genome-wide) species tree given data from individual genes without knowing the evolutionary model. Addressing this challenging problem requires new directions. Here, we introduce Deep-learning Enabled Phylogenetic Placement (DEPP), an algorithm that learns to extend species trees using single genes without prespecified models. In simulations and on real data, we show that DEPP can match the accuracy of model-based methods without any prior knowledge of the model. We also show that DEPP can update the multilocus microbial tree-of-life with single genes with high accuracy. We further demonstrate that DEPP can combine 16S and metagenomic data onto a single tree, enabling community structure analyses that take advantage of both sources of data. [Deep learning; gene tree discordance; metagenomics; microbiome analyses; neural networks; phylogenetic placement.]
Cultural Competence and Cultural Humility: A Dialogue on Adopting a Multimodel Approach in Physical Therapist Education
Authors: Bangs Debra , Hayward Lorna M. , Donlan Pamela 
Published: April 2022

Background and Purpose.
Integrating the concepts of cultural humility and cultural competence into physical therapy (PT) practice may reduce health care disparities and improve patient-centered care. Although several frameworks exist for teaching physical therapist students about cultural competence and cultural humility, discussion about which framework is comprehensive enough to capture the complexity of this topic is unresolved. The purpose of this position paper was to raise awareness in physical therapist and physical therapist assistant (PTA) education about existing frameworks of cultural competence and cultural humility and present a rationale for the inclusion of both in educational approaches.

Position and Rationale.
This article examines the concepts of cultural competence and cultural humility, explores the differences between these 2 concepts, and provides a rationale for integrating both theoretical constructs into PT and PTA education.

Discussion and Conclusion.
Cultural competence and cultural humility frameworks are evolving and so should faculty member approaches to teaching this content to PT students. Contemporary pedagogy requires a focused lens through which to prepare students for incorporating cultural awareness into clinical care to avoid potential cultural mismatches. Creating a new framework that synthesizes the principles of cultural competence and cultural humility may encourage more inclusivity. Cultural pedagogy has the potential to improve the patient experience and health outcomes by empowering students to provide care that is sensitive to important patient cultural differences.
Zomato’s race to capture the foodtech market
Authors: Paluri Ratna Achuta , Jain Rishabh Upendra , Sankara Narayanan R. 
Published: April 2022

Learning outcomes
This case allows students to critically analyse the business model of Zomato which is a multi-sided platform/in the foodtech industry. It helps students to critically analyse how firms enter into the global market to create value and maintain dominance over the local market (especially in a large market such as India). The case can also be used to introduce students to the business canvas model by analysing foodtech start-ups. The outcomes are as follows: to understand the Business Model Canvas as a tool to describe and analyse the foodtech business such as Zomato’s, based on its value proposition and the way it sells its services; to conduct a value chain analysis and analyse the business models adopted by foodtech companies; to understand how Zomato can aim at global value creation; and to design a clear growth strategy and evaluate Zomato’s options to internationalize or expand locally.

Case overview/synopsis
The year 2018 was an important year for Zomato as it geared up to chart new heights amidst the changing dynamics of the industry on one hand and a co-founder exiting the company on the other hand. Zomato was incepted in 2008 as a restaurant discovery platform offering users the ability to access restaurant menus and post online reviews. It provided a range of value-added services for both its restaurant partners and end customers. Its vertical integration enabled it to grow its revenues across its three lines of business, namely, dining out, delivery and sustainability. Zomato was an early internet start-up that expanded rapidly in the international markets. In the past ten years, the company both scaled and rolled back its operations with unique lessons learned in each market that paved its path for success both locally and globally. The domestic market was being dominated by a few large players sharing the market. Reports by market intelligence firms showed that Swiggy, the closest competitor was starting to dominate Zomato in India [1]. Deepinder, CEO, Zomato’s dilemma for adding value and increasing revenues by weighing options of whether the company should strengthen its presence in the domestic market, or, venture into foreign markets or serve both local and foreign markets.

Complexity academic level
This case is appropriate for postgraduate courses in Strategic Management or International Business.

Supplementary materials
Teaching notes are available for educators only.

Subject code
CSS 5: International Business.
Development of fashion recommendation system using collaborative deep learning
Authors: Lee Gwang Han , Kim Sungmin , Park Chang Kyu 
Published: April 2022

PurposeThe purpose of this study is to solve the cold start problem caused by the lack of evaluation information about the products.Design/methodology/approachA recommendation system has been developed by using the image data of the clothing products, assuming that the user considers the visual characteristics importantly when purchasing fashion products. In order to evaluate the performance of the model developed in this study, it was compared with Random, Itempop, Matrix Factorization and Generalized Matrix Factorization models.FindingsThe newly developed model was able to cope with the cold start problem better than other models.Social implicationsA hybrid recommendation system has been developed that combines the existing recommendation system with deep learning to effectively recommend fashion products considering the user's taste.Originality/valueThis is the first research to improve the performance of fashion recommendation system using the deep learning model trained by the images of fashion products.
Assessment and appraisal of local governance on urban flood resilience in Bangkok Metropolitan Region: perspectives of SDGs 11 and 13
Authors: Pal Indrajit , Arboleda Jose Luis , Nitivattananon Vilas , Benjachat Nonthakarn 
Published: April 2022

Purpose
The purpose of this study is to understand through the qualitative assessment, how the current strategy plans are geared toward reducing urban flood risks and achieving Sustainable Development Goals (SDGs) 11 and 13.

Design/methodology/approach
The Bangkok Metropolitan Region (BMR) plays a major role in Thailand’s economic development. Thus, when the 2011 Thailand flood disaster occurred, BMR suffered major economic and social losses, which impacted the rest of the country. This mega disaster prompted policymakers, the academe and other relevant stakeholders to reevaluate and amend the current urban flood risk reduction measures and governance. The present study attempts to evaluate and compare the post-2011 Thailand flood disaster strategy and master plans, policies and reports that directly and indirectly reduce urban flood risks in the provinces of BMR. Basing on SDGs 11 and 13 targets that impact urban flood risk and resilience, a set of criteria was developed to screen, score and asses the selected documents. A screening process of three levels are conducted to limit the documents to be reviewed, and subsequent content analysis for scoring also has been done.

Findings
The projected results indicate the need for improved and increased number of localized strategic plans and policies, which are more comprehensive and integrated as risk governance documents.

Research limitations/implications
Furthermore, it is projected that there is need to integrate measures to increase adaptive capacity for BMR.

Originality/value
This study is original, and methodology can be replicated for other urban areas for flood risks and resilience assessment.
The influence of financial knowledge on the credit behaviour of small and micro enterprises: the knowledge-based view
Authors: Liu Meiyu , Hu Yelin , Li Chengyou , Wang Shuo 
Published: April 2022

Purpose
The rich financial knowledge of small and micro business owners helps to enhance the formal credit demand of small and micro enterprises and change the credit channel preference of small and micro enterprises. The purpose of this paper is to explore the relationship between financial knowledge and the credit practices of 290 small and micro enterprises in China’s Jiangsu and Shandong provinces based on their formal credit needs and preferred channels of credit.

Design/methodology/approach
To measure the degree of the credit constraints of small and micro enterprises, this study applied questionnaire surveys to obtain information on the credit demand and supply of 363 small and micro enterprises in the Jiangsu and Shandong provinces. Firstly, a probit model is used to study the influence of financial knowledge on the formal credit demand and credit acquisition possibility of small and micro enterprises, and tool variables and a biprobit model are used to deal with the possible errors of endogenesis and sample selection. Secondly, a tobit model is used to study the influence of financial knowledge on the credit access of small and micro enterprises in different channels, and tool variables and a Heckman two-stage model are used to deal with endogenesis and possible errors in sample selection. Finally, this study carried out a series of robustness tests to make the conclusions more reliable.

Findings
This study is based on the perspective of the knowledge-based view to explore the impact of financial knowledge on the credit behaviour of small and micro enterprises. This study found that financial knowledge can increase a small and micro enterprise’s formal credit needs and drive the small and micro enterprise to actively apply for loans. Furthermore, financial knowledge has a significant and positive influence on the acquisition of formal credit and approved lines of formal credit and a significant and negative influence on the acquisition of informal credit and approved lines of informal credit.

Research limitations/implications
The results indicated that increased financial knowledge can increase the likelihood of a small and micro enterprise to prefer formal credit and reduce the likelihood of it to prefer informal credit channels.

Originality/value
Financial knowledge is the ability to master basic economic knowledge and financial concepts as well as the ability to use knowledge to manage and allocate financial resources. The rich financial knowledge of small and micro business owners helps to enhance the formal credit demand of small and micro enterprises and change their credit channel preference. This paper offers a new perspective on the problems of credit constraint, low participation in formal credit markets and high participation in private credit markets among China’s small and micro enterprises and valuably supplements the research literature.
Entrepreneurial strategies and family firm culture in the Arab world: a systematic literature review
Authors: Sindakis Stavros , Kitsios Fotis , Aggarwal Sakshi , Kamariotou Maria 
Published: April 2022

PurposeFamily businesses are value-based enterprises, contributing significantly to wealth creation. Although extensive research is conducted on family businesses, there is no study investigating how the cultural traits in the Arab world affect the organizational culture of family businesses. This paper discusses how the cultural characteristics in the Arab world shape family enterprises and explores how the Arab world's organizational culture enables family firms to establish competitive advantage underpinned by founder centrality, the concept of family, and business principles spanning many generations.Design/methodology/approachA thorough search of the extant literature was done in Scopus, Web of Science, EBSCO, and ScienceDirect using a combination of keywords such as Arab culture, family businesses, family firm culture, organizational culture, cultural traits, management strategies, and entrepreneurial strategies. Selected articles were classified according to their content, reviewed, and analyzed.FindingsThis study makes a few critical contributions about the nature, and the origins of organizational culture in family firms, entailing the founder's centrality and stewardship theory. Specifically, family firms in the examined region appear to have a stronger firm culture compared to non-family businesses. Also, organizational culture affects family businesses considering the firm-level outcomes, such as hereditary transition success, family inertia, etc.Originality/valueThis paper adds to the existing theoretical knowledge and underlines the cultural traits and family firm culture in the Arab world. A framework is presented, offering practical recommendations to managers of family firms striving to advance their competitiveness.
The new feminine face of the digital divide
Authors: Frederick Donna Ellen 
Published: April 2022

Purpose
The purpose of this paper is to present a theory regarding how professional and academic women face career-limiting barriers when they are no longer associated with a professional or academic or professional employer.

Design/methodology/approach
This paper presents literature review and presentation of a new conceptualization of the digital divide.

Findings
In the past 30 years, communications and information sources have become increasingly digital. To make use of digital information and communication systems, an institutional account is required. Women who are no longer employed by the institution or are no longer students lose their accounts and don't have access to the digital services they require.

Originality/value
To the best of the author’s knowledge, this paper presents an original description of a new facet of the digital divide, as the author was not able to locate any papers discussing this particular issue.
The impact of stakeholder management on restatement disclosure transparency
Authors: Hogan Brian , Reid Colin 
Published: April 2022

PurposeThe purpose of this paper is to explore the impact of a particular firm’s stakeholder orientation, particularly employee orientation, on corporate communications with stakeholders concerning financial irregularities.Design/methodology/approachThis study explores the impact of a particular firm’s stakeholder orientation, particularly employee orientation, on corporate communications with stakeholders concerning financial irregularities. Using a sample of 762 firm restatements, the authors separate their observations by disclosure transparency (high or low transparency of disclosure) and use logit regressions to examine whether companies with stronger employee orientation make more or less transparent restatement disclosures.FindingsThe findings show that higher levels of investment in employee orientation are associated with less transparent restatement disclosures. Further, examining a subsample of restatements in which managers may have greater discretion over how a restatement is disclosed confirms this finding. However, supplemental tests show that increased external monitoring may mitigate these effects.Practical implicationsThe findings provide support that other stakeholders, such as shareholders, should weigh the potential pros/cons of management investments in corporate social responsibility (CSR). These concerns are more important now as firms continue to embrace a stakeholder-focused model of management which allocates resources to numerous stakeholder groups.Originality/valueThis paper extends the growing body of research that assesses the impact of CSR on firm outcomes (Kimet al., 2012; Guoet al., 2016; Hmaittaneet al., 2019). Further, this paper contributes to the disclosure transparency literature by finding an association between CSR investment levels and the manner in which a firm discloses a restatement.