bluuebunny/crossref_metadata_2025_split huggingface dataset:
Opioid-blunted cortisol response to stress is associated to increased negative mood and wanting of social reward
Authors: Massaccesi Claudia , Willeit Matthaeus , Quednow Boris B. , Nater Urs M. , Lamm Claus , Mueller Daniel , Silani Giorgia 
Published: August 2021

AbstractAnimal research suggests a central role of the μ-opioid receptor (MOR) system in regulating affiliative behaviors and in mediating the stress-buffering function of social contact. However, the neurochemistry of stress-related social contact seeking in humans is still poorly understood. In a randomized, double-blind, between-subject design, healthy female volunteers (N = 80) received either 10 mg of the μ-opioid agonist morphine sulfate, or a placebo. Following a standardized psychosocial stress induction, participants engaged in a social reward task, in which the motivation to obtain skin-to-skin social touch and the hedonic reactions elicited by such touch were assessed.Morphine prevented the increase of salivary cortisol typically observed following acute stress exposure. Notably, this altered HPA axis responsivity was associated with increased negative affect in response to psychosocial stress, and with enhanced subjective wanting of highly rewarding social contact.These findings provide novel evidence on the effect of exogenous opioids administration on the reactions to psychosocial stress and point to a state-dependent regulation of social motivation.
Positive solution for the (p, q)-Laplacian systems by a new version of sub-super solution method
Authors: Moussa Mohammed , Moussa Abdelqoddous , Mazan Hatim 
Published: August 2021

PurposeIn this paper, the authors give a new version of the sub-super solution method and prove the existence of positive solution for a (p, q)-Laplacian system under weak assumptions than usually made in such systems. In particular, nonlinearities need not be monotone or positive.Design/methodology/approachThe authors prove that the sub-super solution method can be proved by the Shcauder fixed-point theorem and use the method to prove the existence of a positive solution in elliptic systems, which appear in some problems of population dynamics.FindingsThe results complement and generalize some results already published for similar problems.Originality/valueThe result is completely new and does not appear elsewhere and will be a reference for this line of research.
Disclosing customers' intentions to use social media for purchase-related decisions
Authors: Sangwan Sumit , Sharma Supran Kumar , Sharma Jyoti 
Published: August 2021

PurposeThe present study intends to shed light on behaviour of customers towards usage of social media for purchasing decisions. The study proposes an extension to technology acceptance model (TAM) to analyse the significance of monetary benefits and information reliability on customers' intention to use social media.Design/methodology/approachThe sample was drawn from social media users of north-western region of India (n = 622). The proposed model was tested using exploratory factor analysis and structural equation modelling.FindingsResults indicate that monetary benefits and perceived ease of use have significant influence on customers' intention to use social media, while information reliability and monetary benefits significantly influence only through perceived usefulness.Practical implicationsThe findings are valuable to marketers to acknowledge the potential of social media to reach to masses by providing timely and reliable information. The study also reveals that website/app developers should implement a user-friendly interface and reliable content to influence customers' usage behaviour.Originality/valueThe study is a unique attempt to examine the effect of monetary benefits and information reliability with TAM's key constructs in the context of social media adoption. Studies undertaken aforementioned dimensions are mainly concerned with examining direct contribution of social media and its effect on purchase decisions.
Does MBA education benefit women more than men? A longitudinal study
Authors: Krishnan Venkat R. 
Published: August 2021

Purpose
The purpose of this study is to see if women value power less than men do and if MBA education reduces this gender difference in power value.

Design/methodology/approach
The impact of a two-year residential full-time MBA program on students’ values was studied using a longitudinal design and data collected over two years from a business school in India. Values were measured when students entered the program and again when they graduated. The sample consisted of 230 students (90 women and 140 men).

Findings
While entering the MBA program, female students considered power less important than male students did. Results of matched sample t-tests show that power, hedonism, stimulation and tradition become more important and benevolence, universalism, conformity and security become less important over two years of MBA education. The increase in the importance of power value is significantly higher for women than for men.

Originality/value
To the best of the author’s knowledge, this is the first study to show that women’s value ratings for power value increase much more than that of men over two years of management education.
Inhomogeneous wave reflection from the surface of a partially saturated thermoelastic porous media
Authors: Kumar Manjeet , Liu Xu , Kalkal Kapil Kumar , Dalal Virender , Kumari Manjeet 
Published: August 2021

Purpose
The purpose of this paper is to study the propagation of inhomogeneous waves in a partially saturated poro-thermoelastic media through the examples of the free surface of such media..

Design/methodology/approach
The mathematical model evolved by Zhou et al. (2019) is solved through the Helmholtz decomposition theorem. The propagation velocities of bulk waves in partially saturated poro-thermoelastic media are derived by using the potential functions. The phase velocities and attenuation coefficients are expressed in terms of inhomogeneity angle. Reflection characteristics (phase shift, loci of vertical slowness, amplitude, energy) of elastic waves are investigated at the stress-free thermally insulated boundary of a considered medium. The boundary can be permeable or impermeable. The incident wave is portrayed with both attenuation and propagation directions (i.e. inhomogeneous wave). Numerical computations are executed by using MATLAB.

Findings
In this medium, the permanence of five inhomogeneous waves is found. Incidence of the inhomogeneous wave at the thermally insulated stress-free surface results in five reflected inhomogeneous waves in a partially saturated poro-thermoelastic media. The reflection coefficients and splitting of incident energy are obtained as a function of propagation direction, inhomogeneity angle, wave frequency and numerous thermophysical features of the partially saturated poro-thermoelastic media. The energy of distinct waves (incident wave, reflected waves) accompanying interference energies between distinct pairs of waves have been exhibited in the form of an energy matrix.

Originality/value
The sensitivity of propagation characteristics (velocity, attenuation, phase shift, loci of vertical slowness, energy) to numerous aspects of the physical model is analyzed graphically through a particular numerical example. The balance of energy is substantiated by virtue of the interaction energies at the thermally insulated stress-free surface (opened/sealed pores) of unsaturated poro-thermoelastic media through the bulk waves energy shares and interaction energy.
Effect of employees’ work engagement and knowledge sharing as mediators of empowering leadership and innovative work behaviour
Authors: Na-Nan Khahan , Arunyaphum Apiwat 
Published: August 2021

PurposeThe purpose of this paper is to explore the influences of work engagement and knowledge sharing as mediators of empowering leadership and innovative work behaviour.Design/methodology/approachA cross-sectional design study was used, and questionnaires were submitted to 385 engineers to test the proposed relationships. AMOS 21 and PROCESS macro 3.1 were used for statistical analysis.FindingsThe results revealed that work engagement and knowledge sharing were partially mediated by empowering leadership and innovative work behaviour.Practical implicationsThe results of the study can be used by leaders for promoting and supporting innovative work behaviour in the organisation. Moreover, employees should be supported and enhanced to learn continuously under the consultation of the leaders.Originality/valueThe findings contribute to the literature on empowering leadership and innovative work behaviour by highlighting that work engagement and knowledge sharing act as mediators to empower leadership and enhance innovative work behaviour.
The governance role of shareholders and board of directors on firm performance: an eclectic governance-performance model
Authors: Ozdemir Ozgur , Kilincarslan Erhan 
Published: August 2021

PurposeThis study aims to examine the governance role of shareholders and board of directors in determining firm performance through an eclectic multi-theoretic model that integrates structure and incentive functions of agency theory and capability aspect of the resource-based view.Design/methodology/approachThe research model uses a large panel data set of 2,364 UK firms over the period 2000–2010 and uses alternative specifications of the model to improve robustness.FindingsThe results show that the industry experience of major shareholders as a proxy for shareholder capability has a significant positive impact on investee firm performance. The findings also reveal that the lock-in effect of the largest shareholder has a positive impact on performance, whereas the monitoring effectiveness of shareholders is not associated with ownership concentration. Moreover, the results indicate the underlying capabilities of the board of directors and their impact on corporate performance – particularly, the interlocking directorates of executives have a positive impact on firm performance but those of non-executives have a negative one. However, the previous directorship experience of non-executives has a positive impact on performance.Research limitations/implicationsThis study presents a more comprehensive and complete understanding of the governance-performance relationship beyond the narrow or partial explanations provided by single-theory-based studies or those of investigating the effect of various governance tools separately.Practical implicationsThis study provides more insights into the capability dimension of shareholders and the role of incentives in motivating shareholders to exercise stronger oversight on the management rather than just using ownership concentration. Hence, the study can serve as valuable guidance for investors, corporate managers and policymakers.Originality/valueTo the best of the knowledge, this is the first comprehensive study that uses an eclectic philosophical approach, integrating the agency theory and resource-based view, to not only examine the impact of board of directors but also investigate the governance role of shareholders in modern corporations to understand how shareholders acquire the requisite skills and information, the best practices and processes, and ultimately use the scarce and inimitable resources that help investee firms in improving their performance.
Sustainability and green practices: the role of stakeholder power in fast-food franchise chains
Authors: Perrigot Rozenn , Watson Anna , Dada Olufunmilola (Lola) 
Published: August 2021

Purpose
This paper aims to explore how the power of salient stakeholders involved in the green waste management of franchise chains can impact the ability of the chains to change their green practices.

Design/methodology/approach
This qualitative study is based on interview data from 19 franchisors and their head office staff operating in the fast-food sector in France where franchise chains have been ‘named and shamed’ as continuing to ignore waste management regulation.

Findings
The findings suggest that both the form and bases of power of different stakeholder groups have important implications for the implementation of green practices, even those required by law. The authors find that the franchisees’ central network position alters the ability of franchisors to directly engage in dialog, consult with, and educate key stakeholders, creating additional challenges for franchisors in the implementation process.

Research limitations/implications
The qualitative nature of the study limits the extent to which the findings can be generalized. Future studies could develop an instrument to assess franchisor perceptions of stakeholder power.

Practical implications
The findings suggest that franchisors should consider carefully how they communicate changes to green practices to their franchisees to ensure not only their compliance but also their motivation to engage with those stakeholders with whom they have regular interactions. The findings can also help governments to better understand how to involve other stakeholders to ensure effective environmental legislation.

Originality/value
The study is the first, to the authors’ knowledge, to consider the role of stakeholders in the implementation of green practices in franchise chains. By examining franchise chains, this paper provides new insights into the role of an additional stakeholder, the franchisee, and enriches the literature on green practices in the hospitality sector.
COVID-19 and health-care worker's combating approach: an exhausting job demand to satisfy
Authors: Shah Syed Jamal , Huang Cheng 
Published: August 2021

PurposeThis study aims to investigate the relationship between person-role conflict, psychological capital and emotional exhaustion. Specifically, the research explores how person-role conflict magnified due to daily contact with COVID-19 carriers leads doctors and nurses to experience emotional exhaustion. Moreover, psychological capital function as an explanatory mechanism between stressor strain relationships has also been tested.Design/methodology/approachThe study results are based on three months of lagged data conducted from the sample of 347 frontline physicians and nurses who provide treatment and care to infected people. To test direct, indirect and total effect, the author's used PROCESS Macro.FindingsThe results suggested that person-role conflict reduces state-like psychological capital and increases emotional exhaustion through reduced psychological capital. Results aligned with the model's expectations in that psychological capital mediated the relationship between person-role conflict and emotional exhaustion, and the mediation was partial.Originality/valueThis paper is the first one that tested the link between person-role conflict and emotional exhaustion. Moreover, up till now, no study has examined the mediating role of psychological capital in the relationship between person-role conflict and emotional exhaustion. Finally, in the context of the contagion outbreak, this is the preliminary effort that validated the resource loss cycle principle of conservation of resource theory.
A systematic analysis of the spatial migration patterns and the linkages between market components in Greater Manchester, United Kingdom
Authors: Doan Le-Vinh-Lam , Yudono Adipandang 
Published: August 2021

PurposeThis paper aims to bring together research on housing market area, submarket and household migration into a systems approach that helps us gain a better understanding of the structure and dynamics of a housing market and identify housing problems for a large metropolitan area.Design/methodology/approachThe paper uses a geographic information system (GIS)-based method with simple quantitative techniques, including spatial analysis, location analysis, house price clustering and cross-tabulation. The analysis is based on migration data from the 2011 Census, house price data from the Land Registry in 2011 for Greater Manchester at the ward level and the output areas level.FindingsThe results show that different submarkets and housing market areas had different patterns of spatial migration and connections with other areas. Through a systematic analysis of migration and house price in combination, it also found a close connection between destination submarkets and the ages of migrants and identified specific problematic patterns for a large metropolitan area.Research limitations/implicationsThe interactions between the owner-occupied sector and the social and private rented sectors are arguably an important omission from the analysis. Also, it is acknowledged that clustering ward units based on price differentials is subject to distortions in terms of specification, size and shape. Moreover, the use of the large samples may result in very smallp-values, leading to the problem of the rejection of the predefined hypothesis.Practical implicationsA systematic analysis of migration and house price in combination may be used to gain a better understanding of the housing market dynamics and identify housing problems systematically for a large metropolitan. It may help to identify low-demand areas, high-demand areas and assist planners with decisions in allocating suitable land for new housing constructions.Social implicationsThe GIS-based method introduced in the paper could be considered as an effective approach to provide a better basis for determining policy interventions and public investment designed to allocate land resources effectively and improve transport systems to change existing problematic migration patterns.Originality/valueThis paper fills a gap in the international literature in relation to adopting a systems approach that analyses migration and house price data sets in combination to systematically explore migration patterns and linkages and identify housing problems for a large metropolitan area. This systems approach can be applied in any metropolitan area where migration and house price data are available.
Gentrification effects on housing prices in neighbouring areas
Authors: Wilhelmsson Mats , Ismail Mohammad , Warsame Abukar 
Published: August 2021

PurposeThis study aims to measure the occurrence of gentrification and to relate gentrification with housing values.Design/methodology/approachThe authors have used Getis-Ord statistics to identify and quantify gentrification in different residential areas in a case study of Stockholm, Sweden. Gentrification will be measured in two dimensions, namely, income and population. In step two, this measure is included in a traditional hedonic pricing model where the intention is to explain future housing prices.FindingsThe results indicate that the parameter estimate is statistically significant, suggesting that gentrification contributes to higher housing values in gentrified areas and near gentrified neighbourhoods. This latter possible spillover effect of house prices due to gentrification by income and population was similar in both the hedonic price and treatment effect models. According to the hedonic price model, proximity to the gentrified area increases housing value by around 6%–8%. The spillover effect on price distribution seems to be consistent and stable in gentrified areas.Originality/valueA few studies estimate the effect of gentrification on property values. Those studies focussed on analysing the impacts of gentrification in higher rents and increasing house prices within the gentrifying areas, not gentrification on property prices in neighbouring areas. Hence, one of the paper’s contributions is to bridge the gap in previous studies by measuring gentrification’s impact on neighbouring housing prices.
An integrated spherical fuzzy AHP multi-criteria method for Covid-19 crisis management in regarding lean six sigma
Authors: Demir Ezgi , Turan Hakan 
Published: August 2021

Purpose
The Covid-19 pandemic has caused disruptions in many businesses. A difficult process has been experienced for businesses caught unprepared for this situation. The purpose of the study, the difficulties experienced in the business have been mapped in terms of crisis management.

Design/methodology/approach
For this purpose, crisis management strategies have been discussed in terms of lean six sigma (LSS) strategies. Afterward, LSS strategies have been weighted with the spherical fuzzy analytical hierarchy process (AHP) method, which has been recently introduced to the literature (Gündogdu and Kahraman, 2020). While weighting has been done with the spherical fuzzy AHP method, three experts in the field of LSS at the master blackbelt level have been studied.

Findings
The Covid-19 process has caused the usual processes of businesses to change. Businesses do not have enough time to adapt their business processes in the Covid-19 process. To eliminate waste and time in the Covid-19 process, the lean methodology was used. At the same time, quality deficiencies have been tried to be eliminated with the six sigma methodology. Therefore, the six sigma methodology and lean techniques should be considered together. With LSS, the adaptation of this process has been wanted to be accelerated. In this context, the criteria in the Covid-19 process were prioritized and losses were reduced in accordance with the LSS methodology. In this study, the most important criterion during the covid-19 pandemic has been determined as “responding to the changing needs of customers” and the least important criterion has been determined as “communication with stakeholders in enterprises.”

Research limitations/implications
This study has been applied the Covid-19 pandemics. So, it has been evaluated related to these specific criteria.

Practical implications
Covid-19 crisis management was examined for the first time within the scope of the LSS methodology. The criteria in the Covid-19 process were determined by six sigma expert master black belts. For the first time, spherical fuzzy AHP, one of the multi-criteria decision methods, has been applied to the Covid-19 process.

Originality/value
This study has been aimed to create a roadmap to apply LSS steps in businesses against a possible second wave of the Covid-19 pandemic. In this context, it is thought that the study will fill the following gaps in the literature: Covid-19 crisis management was examined for the first time within the scope of LSS methodology. The criteria in the Covid-19 process were determined by six sigma expert master black belts. For the first time, spherical fuzzy AHP, one of the multi-criteria decision methods, has been applied to the Covid-19 process.