bluuebunny/crossref_metadata_2025_split huggingface dataset:
Impact of COVID-19 and government interventions on Bursa Malaysia sectors
Authors: Chow Yee Peng , Tan Young Han 
Published: October 2022

Purpose
The purpose of this paper is to examine the influence of the daily growth in confirmed COVID-19 cases in Malaysia and government interventions on the daily returns of financial times stock exchange Bursa Malaysia Kuala Lumpur Composite Index (FBMKLCI) and eight selected Bursa Malaysia sectorial indices for the period January 29, 2020 to March 31, 2021.

Design/methodology/approach
This paper adopts the multivariate generalized autoregressive conditional heteroscedasticity model to determine the effects for the entire study period and four sub-periods, i.e. pre-government intervention, movement control order (MCO), conditional MCO (CMCO) and recovery MCO phases.

Findings
This paper finds no evidence of the effect of the daily growth in confirmed COVID-19 cases on the returns of FBMKLCI and eight Bursa Malaysia sectorial indices for the full study period. However, the former has exerted different effects over the four sub-periods. Sectors that are positively affected for the MCO period are financial services and real estate investment trust. Yet, these sectors are negatively affected for the CMCO period along with the industrial products and services and technology sectors. Sectors that consistently demonstrate statistically insignificant results are construction, energy, plantation and utilities.

Originality/value
This study makes an initial attempt to investigate the influence of the COVID-19 pandemic on the returns of Bursa Malaysia sectorial indices over different phases of government interventions in Malaysia.
Time varying intra/inter quantile developing relationship of Islamic stock returns: empirical evidence from Indonesia using QBARDL
Authors: Fianto Bayu Arie , Shah Syed Alamdar Ali , Sukmana Raditya 
Published: October 2022

Purpose
This study aims to investigate the determinants of Islamic stock returns listed on Jakarta Islamic Index (Indonesia) between 2008 and 2018.

Design/methodology/approach
This study uses a quantile bounded autoregressive distributed lag (QBARDL) model to uncover relevant relationships.

Findings
This study finds that the Dow Jones Islamic Market Index, gold returns, world oil prices and exchange rates are the determinants of the Indonesia’s Islamic stock returns. However, the relationship is time varying developing intra-/inter-quantile bounded.

Practical implications
Integration of the Islamic stock returns with the real economic indicators changes over time. The findings have important implications for the policymakers, the fund managers and the investors to anticipate consequences when considering the macroeconomic conditions before participating in the Indonesian Islamic stock market.

Originality/value
Using a QBARDL, this study finds that the Islamic stock returns have on net and “time-varying intra-/inter-quantile developing” relationship with its determinants as data quantiles progressed from 25% to 75%.
The impact of digital leadership on sustainable performance: a systematic literature review
Authors: Khaw Tze Yin , Teoh Ai Ping , Abdul Khalid Siti Nabiha , Letchmunan Sukumar 
Published: October 2022

PurposeIn today's constantly changing workplace, leaders encounter new challenges consequent to rising digitization. Tackling these problems effectively requires digital leadership, a prominent idea in discussions about what abilities the managers need to be developed in the digital age. The study analyses the leadership elements needed and determines the impact of digital leadership on sustainable performance. The aim of this systematic literature review (SLR) is to identify the relationship between digital leadership concepts and leadership development by proposing digital leadership for management development to ensure sustainable performance in an organisation.Design/methodology/approachROSES (RepOrting Standards for Systematics Evidence Syntheses) was used as the publication standard for this systematic literature review, which incorporated a variety of research approaches. For this study's article selection, one of the most important scientific databases, Scopus, was used. Only articles published between 2001 and 2021 were reviewed. The focus of the article was on digital leadership and performance.FindingsThis review identified five main themes: leadership styles, measurements of leadership, antecedents to good leadership, outcomes of good leadership and gaps in current research areas. An additional ten sub-themes were derived from the five primary topics.Originality/valueThis paper systematically reviewed two decades of literature related to digital leadership and its impact on sustainable performance. The findings allow leaders to better understand the leadership trend and develop appropriate leadership practices to overcome future challenges for sustainable performance.
Academic library services extension during the COVID-19 pandemic: considerations in higher education institutions in the Gauteng Province, South Africa
Authors: Dube Tinyiko Vivian , Jacobs Lorette 
Published: October 2022

PurposeThis paper aimed to determine the extent to which academic libraries and information services were extended due to the emergence of COVID-19 in the Gauteng Province, South Africa.Design/methodology/approachFounded on a pragmatism paradigm, the sequential explanatory research design was adopted to engage with participants and respondents on their experience of library services extensions to support users during the COVID-19 pandemic. Data were collected using online questionnaires and interviews. Cluster and purposive sampling were used and data for the quantitative part were analyzed using the Statistical Package for the Social Sciences (SPSS), whilst qualitative data were analyzed manually.FindingsFindings revealed that academic libraries operating in a higher education environment provided extensive support to remote users during the COVID-19 pandemic. This was done through the utilization of a variety of technology utilization, ranging from traditional e-mail support to the use of technology related to Artificial Intelligence such as the BOTsa, which is a Chatbot aimed to assist users in receiving speedy responses to library-related inquiries.Originality/valueThis study is unique in that it focuses on academic libraries that operate in higher education environments where support for achieving academic endeavors becomes imperative to ensure the smooth execution of teaching and learning activities within the restrictions put in place due to the COVID-19 pandemic. Adaptions and improvements to academic library services during and post-COVID-19 era were successful in ensuring that remote users could obtain similar services and access to information as was the case before the outbreak of the COVID-19 pandemic.
Mediation and moderated mediation in the relationship between sanction threats, type of rank and officer attitudes toward misconduct
Authors: Nam Yongjae 
Published: October 2022

PurposeThis study aims to examine whether officers' perceptions of the probability of suffering informal sanctions mediate the relationship between formal sanction threats and attitudes toward misconduct. Most importantly, the study examines whether the potential mediating effect of informal sanction threats varies by the type of rank.Design/methodology/approachThe current study utilizes data collected from a mail survey of 480 police officers over a period of six weeks from 20 police stations across two cities in South Korea.FindingsOfficers' fear of legal sanctions on the attitudes toward misconduct was entirely mediated by the fear of extralegal forms of punishment. However, this mediation effect was held only for the officers in supervisory positions.Originality/valueProbing a moderated mediation between the type of rank and sanction threats on police integrity advances the literature by moving beyond simply exploring the additive effects of sanction threats and adds clarity to existing concerns about exactly how rank-related cultural differences matter.
A rough set approach for classification of fabric defects
Authors: Das Subhasis , Ghosh Anindya 
Published: October 2022

Purpose
In recent years, rough set theory has evolved as one of the most promising classification techniques. One of the cardinal uses of rough set theory is its application for rule generation. The purpose of this paper is to propose a real-time fabric inspection technique. This work deals with the multi-class classification of fabric defects using rough set theory.

Design/methodology/approach
This technique focuses on the classification of fabric defects using the effective decision rules envisaged by rough set theory. In the proposed work, the six features of 50 images have been used for multiclass classification of fabric defects.

Findings
In this work, 40 images were used for generation of decision rules and 10 unseen images were used for validation out of which nine images are accurately predicted by the proposed technique.

Originality/value
The proposed method accurately identified 9 out of 10 testing defects. The obtained decision rules provide an insight about the classification method which ensures that the prediction accuracy can be improved further by framing more robust decision rules with the help of a large training data set. Thus, with the support of modern computational systems this method is potent in getting recognition from the textile industry as a real-time classification technique.
Oil price dynamics and firms' stock returns in the Nigeria stock market
Authors: Akachukwu Stanley Uche 
Published: October 2022

AbstractExisting studies have investigated the impact of oil price risk (OPR) on firms' stock returns (FSRs) at the aggregate level; little attention has been devoted to firms' stock returns (FSRs) given the firm's size. This study was designed to investigate the effects of OPR on FSRs while considering the sizes of these firms in Nigeria. A nonlinear autoregressive distributed lag econometric model that captures OPR (positive and negative oil price change) was explored, in which short‐run and long‐run nonlinearities are estimated in both symmetric and asymmetric models. One hundred firms in the Nigeria Stock Exchange were partitioned into four quartiles using their market capitalization. The results showed that a positive OPR increased stock returns in the first quartile, third quartile and fourth quartile while anegative OPR reduced the returns in the first quartile, but the second, third and fourth quartile stock returns gained in the long‐run. Generally, the quartiles responded to asymmetric oil price change. The OPR had differential impacts on stock returns depending on the size of the firm in Nigeria but negative OPR impacts most capitalized firms more.
Rostrum abnormalities in the endangered Indian Ocean humpback dolphin (Sousa plumbea) in South Africa
Authors: FRAINER Guilherme , ELWEN Simon , DINES Sasha , JAMES Bridget , VERMEULEN Els , PENRY Gwenith , VARGAS‐FONSECA O. Alejandra , ATKINS Shanan , CONRY Danielle , GRIDLEY Tess 
Published: October 2022

AbstractMorphological abnormalities in wild animals can be indicators of the underlying health of a population and may be determined through routine photographic surveys. Here, we assess unusual rostrum conditions in Indian Ocean humpback dolphins (Sousa plumbea) inhabiting South African coastal waters to understand the rate of prevalence of abnormal rostrums and formulate hypotheses on potential causes. Photographic data were collated from systematic boat surveys and opportunistic sightings, obtained between April 1998 and March 2021 in various regions along the South African coast. Overall, 31 unique individuals were found with abnormal rostrum conditions, varying from slight misalignments to severe wounds and/or aberrant morphologies. In most cases, injuries were likely caused by natural events during the animal's life history such as interactions with sharks and/or reef‐associated hunting strategies. Mark–recapture data indicated that individuals had survived with these injuries for up to 10 years. This study reports the highest incidence of rostrum abnormalities in the species. As numbers reflect only those that have survived their injuries, they are considered a minimum estimate. A better understanding of the cause(s) of these injuries is important given the endangered status of this species.
Latitudinal gradients in body size and sexual size dimorphism in fleas: males drive Bergmann's pattern
Authors: KRASNOV Boris R. , SURKOVA Elena N. , SHENBROT Georgy I. , KHOKHLOVA Irina S. 
Published: October 2022

AbstractWe tested for the effects of latitude and geographic range size (GRS) on body size, leg length, and sexual size dimorphism (SSD) across 103 species of fleas, taking into account phylogenetic between‐species relationships. When the data on body size were combined for males and females, the positive correlation between body size and latitude, but not GRS, was revealed. When the analysis was restricted to one sex only, the effect of latitude appeared to be non‐significant for females, whereas male body size increased with an increase in latitude. Intraspecific body size variation was not associated with either the latitude or the latitudinal span of the geographic range, independently of which data subset was analyzed. No evidence of association between size‐independent tibia length and latitude was found for either females, males, or both sexes combined. The degree of SSD decreased with a decrease in latitude but was not affected by GRS. We conclude that macroecological patterns might be manifested differently in males and females. This should be kept in mind while searching for these patterns.
Ecotourist trail‐use affects the taxonomic, functional and phylogenetic diversity of mammals in a protected area: lessons for conservation management
Authors: LEI Boyu , ZHENG Zhenfei , CUI Jifa , ZHAO Jin , NEWMAN Chris , ZHOU Youbing 
Published: October 2022

AbstractEcotourism, by definition, aims to engage peoples’ interest in wildlife and the environment. The use of tourist roads and trails to access sites within protected areas (PAs) can detrimentally affect the behavior and distribution of species. The way mammals respond to anthropogenic pressures may differ across taxonomic, functional, and phylogenetic groups; nevertheless, how ecotourist trail‐use affects these different diversity remains under‐investigated. Here, we assessed 6 metrics of taxonomic, phylogenetic, and functional diversity for a mammal community in a PA in central China, recording how Trail use (using Trail type as a proxy) and habitat variables affected sightings and signs of mammals across 60 replicate 0.5 km transects. We then examined how Trail use affected the taxonomic, functional, and phylogenetic diversity indices of species (>1 kg). Using generalized liner mixed modeling, we identified that more used trail types had a greater adverse effect on all diversity richness indices than did less used trail types. Consequently, tourist pressure was associated with a general tendency to homogenize the site's mammal community. In contrast, the effects of Trail Types on all diversity evenness indices were non‐significant. Furthermore, more developed and more heavily used trail types had a greater, significant negative effect on taxonomic, functional, and phylogenetic richness, whereas these richness indices were unaffected by minor trail types, used less intensively. As a general principle, lower biodiversity indices reduce ecosystem resilience, and so it is vital to better understand these responses to balance public access against biodiversity management in PAs.
Is it necessary for patients with potentially resectable esophageal squamous cell cancer to receive routine preoperative brain MRI/CT?
Authors: Wei Xiufeng , Luo Peng , Chen Xiankai , Wang Zhen , Xu Lei , Xie Hounai , Yang Yafan , Zhang Ruixiang , Yu Yongkui , Li Haomiao , Liu Qi , Qin Jianjun , Li Yin 
Published: October 2022

AbstractBackgroundThis study aimed to investigate the value and efficiency of routine brain MRI or CT in the preoperative workup for patients with potentially resectable (cT1‐4aN0‐3) thoracic esophageal squamous cell cancer (ESCC).MethodsThis was a prospective cross‐sectional clinical trial (ChiCTR1800020304). A total of 385 patients with potentially resectable (cT1‐4aN0‐3) thoracic ESCC diagnosed from October 2018 to August 2020 were included. Plain brain MRI or CT was performed preoperatively to detect brain metastases (BrM). The primary endpoint was BrM detected by imaging.ResultsOf all 385 patients, the rate of positive brain MRI/CT findings was 1% (n = 4). BrM Patients received chemoradiotherapy, and the median OS was 6 months (95% CI: 4.303–7.697). All 381 remaining patients with initial negative brain MRI/CT diagnosis revealed no brain‐associated symptoms within 6 months. The median follow‐up for patients without BrM was 20 months (range, from 6 to 32). The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of plain MRI or CT to detect BrM were all 100%.ConclusionsPreoperative plain MRI or CT is an effective method to detect BrM for potentially resectable (cT1‐4aN0‐3) thoracic ESCC. However, due to the low incidence, the value of brain MRI/CT as a routinely preoperational examination in potentially resectable esophageal squamous cell cancer is rather limited. Therefore, preoperative brain MRI/CT should not be recommended as a routine preoperative examination for ESCC.
Genetic variants in LKB1/AMPK/mTOR pathway are associated with clinical outcomes of chemotherapy in non‐small cell lung cancer
Authors: Choi Sun Ha , Do Sook Kyung , Lee Shin Yup , Choi Jin Eun , Kang Hyo‐Gyoung , Hong Mi Jeong , Lee Jang Hyuck , Lee Won Kee , Jeong Ji Yun , Shin Kyung Min , Do Young Woo , Lee Eung Bae , Park Ji Eun , Lee Yong Hoon , Seo Hyewon , Yoo Seung Soo , Lee Jaehee , Cha Seung Ick , Kim Chang Ho , Park Jae Yong 
Published: October 2022

AbstractThis study was conducted to investigate the relationship between genetic variants in LKB1/AMPK/mTOR pathway and treatment outcomes of patients with non‐small cell lung cancer (NSCLC) treated with chemotherapy. A total of 379 patients with NSCLC who underwent first‐line paclitaxel‐cisplatin chemotherapy was enrolled. The associations between 19 single nucleotide variants (SNVs) in the LKB1/AMPK/mTOR pathway and the chemotherapy response and overall survival (OS) were analyzed. Among the SNVs analyzed, AKT1 rs2494750G>C and TSC1 rs2809244C>A were associated with clinical outcomes after chemotherapy in multivariate analyses. The AKT1 rs2494750G>C was significantly associated with a better response to chemotherapy (adjusted odds ratio [aOR]: 1.92, 95% confidence interval [CI]: 1.02–3.62, p = 0.04). The TSC1 rs2809244C>A were significantly associated with better OS (adjusted hazard ratio [aHR]: 0.79, 95% CI: 0.62–0.99, p = 0.04). When stratified by tumor histology, AKT1 rs2494750G>C exhibited a significant association with the chemotherapy response only in adenocarcinoma and TSC1 rs2809244C>A was also significantly associated with OS only in adenocarcinoma. This result suggests that the AKT1 rs2494750G>C and TSC1 rs2809244 C>A may be useful for predicting the clinical outcome of first‐line paclitaxel‐cisplatin chemotherapy in NSCLC.
When Do Firms Adjust Bonus Targets Intrayear? Evidence from Sales Executives' Targets*
Authors: Arnold Markus , Artz Martin , Grasser Robert A. 
Published: October 2022

ABSTRACTThis study investigates when and why intrayear bonus target revisions occur. This is important as intrayear target revisions occur regularly in practice but are not well understood. Specifically, we analyze two potential drivers of intrayear bonus target revisions: reduced managerial incentives owing to managers dropping out of the incentive zone of their piecewise defined bonus function and potential spillovers from planning target revisions that reflect changes in performance expectations during the year. We also investigate the effects of organizational characteristics on intrayear bonus target revisions. Using data collected from sales executives via multiple waves of surveys, we find evidence for both predicted drivers. In addition, consistent with our predictions, we find that the levels of delegated decision authority, intrafirm interdependencies, and information asymmetry negatively moderate the positive association between reduced managerial incentives and revision likelihood. Our paper contributes to the target setting literature by being the first study to investigate intrayear bonus target revisions and shed light on when firms commit to not revising such targets intrayear.
Factors associated with a maternal lower‐limb neurological deficit after vaginal delivery
Authors: Tournier Alexane , Doremieux Anne Cecile , Drumez Elodie , Labreuche Julien , Cassim François , Gonzales Max , Garabedian Charles , Subtil Damien 
Published: October 2022

AbstractIntroductionThe etiology of lower‐limb neurological deficit after vaginal delivery remains poorly understood. The objective herein was to identify factors associated with this maternal nerve injury after vaginal delivery.Material and methodsA single‐center, case–control (matching 1:4) study. Cases were women with a lower‐limb neurological deficit that appeared immediately after vaginal delivery. Controls were randomly selected women who gave birth vaginally during the same period, without any deficit. Finally, to assess the rates of factors associated with these deficits, we studied them using a randomly selected 5% sample of the population with vaginal deliveries.ResultsDuring the 30‐month study period, 31 cases were identified among 10 333 women who gave birth vaginally (0.3%, 95% CI 0.20–0.43); 124 controls were also included. After logistic regression, the presence of a neurological deficit after delivery was associated with second‐stage labor duration (per hour odds ratio [OR] 3.67, 95% CI 2.09–6.44; OR per standard deviation increase 2.73, 95% CI 1.75–4.25, p < 0.001) and instrumental delivery (OR = 3.24, 95% CI 1.29–8.14, p = 0.012), with no interaction effect (p = 0.56). Extrapolation of these factors to a 5% sample of the overall population of women with vaginal births showed that the rate of these deficits would be very low for women with second‐stage labor lasting up to 90 min without instrumental delivery (0.05%) but increased to 1.52% when these factors were combined (OR 33.1, 95% CI 9.4–116.9).ConclusionsFollowing vaginal delivery, the onset of a neurological deficit is principally associated with the duration of second‐stage labor and instrumental delivery.
Prenatal care in US birth centers: Midwives' perceptions of contributors to birthing People's confidence in physiologic birth
Authors: Neerland Carrie E. , Delkoski Stephanie L. , Skalisky Arielle E. , Avery Melissa D. 
Published: October 2022

AbstractObjectiveThe purpose of this study was to describe US freestanding birth center models of prenatal care and to examine how the components of this care contribute to birthing people's confidence in their ability to have a physiologic birth.DesignThis was a qualitative descriptive study utilizing semi‐structured interviews with birth center midwives. Data were analyzed using thematic analysis, constant comparative method and consensus coding to ensure rigor.Setting and ParticipantsMidwives from six urban and rural freestanding birth centers in a Midwestern US state were interviewed. Twelve birth center midwives participated.FindingsSix themes emerged: the birth center physical space and organization of care, dimensions of midwifery care within the birth center, continuity of care and seamless service, the empowered birthing person, physiologic birth as normative, and the hospital paradigm and US cultures of birth.Key ConclusionsWe identified significant components of birth center models of prenatal care that midwives believe enhance birthing people's confidence for physiologic childbirth. These components may be considered for application to other settings and may improve perinatal care and outcomes.