bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of Low-Dose Ketamine on the Antidepressant Efficacy and Suicidal Ideations in Patients Undergoing Electroconvulsive Therapy
Authors: Chen Qibin , Dong Jun , Luo Jie , Ren Li , Min Su , Hao Xuechao , Luo Qinghua , Chen Jianmei , Li Xiao
Published: January 2020

Objectives

It remains controversial whether a subanesthetic dose of ketamine could modulate the antidepressant effect of electroconvulsive therapy (ECT) in patients with major depressive disorder. We investigated the effect of ketamine on accelerating the antidepressant efficacy of ECT.

Methods

One hundred twenty-seven patients with major depressive disorder were included in this randomized, placebo-controlled, double-blind study. The study group received 0.3 mg/kg ketamine, and the control group received an isovolumetric dose of normal saline before undergoing ECT under propofol anesthesia. The main outcome was the Hamilton Depression Rating Scale score after each ECT session. Suicidal ideation (SI) was also evaluated using the Hamilton Depression Rating Scale. The response, remission, and recurrence rates were analyzed using time-to-event analysis.

Results

No significant differences were found in the overall response, remission, and relapse rates between the groups (P > 0.05). The median number of ECT sessions for achieving response was 4.0 ± 0.41 in the study group and 7.0 ± 0.79 in the control group (P < 0.05). The median number of ECT sessions for achieving remission in the study and control groups was 8.0 ± 0.29 and 9.0 ± 0.48, respectively (P < 0.05). The median number of ECT sessions for achieving SI reduction in the study and control groups was 3.0 ± 0.75 and 6.0 ± 1.19, respectively (P < 0.05).

Conclusions

Low-dose ketamine (0.3 mg/kg) could modulate the antidepressant efficacy of ECT via accelerating the onset of its effects and reducing the number of ECT sessions required to obtain response, remission, and SI reduction, without influencing the relapse rates in remitting patients after ECT treatment.
Sir Aaron Klug OM. 11 August 1926—20 November 2018
Authors: Crowther R. A.
Published: January 2020

Aaron Klug made outstanding contributions to the development of structural molecular biology. An early interest in viruses, stemming from work with Rosalind Franklin, prompted him to think deeply about extracting the information contained in electron micrographs. As a result, he proposed a method for making three-dimensional maps of biological specimens from the projected images given by micrographs. For this development and its application to complex molecular assemblies, he was awarded the 1982 Nobel Prize in Chemistry. The recent revolution in biological structure determination, whereby atomic structures can now be determined from micrographs of frozen hydrated specimens, derives from this initial breakthrough. With colleagues, Aaron applied X-ray crystallography and electron microscopy to determine the structures and thereby understand the functions of many biological assemblies, including viruses, transfer RNA, chromatin and zinc fingers. He also made important forays into the pathogenesis of Alzheimer's disease and related dementias. Aaron was director of the MRC Laboratory of Molecular Biology in Cambridge from 1986 to 1996 and President of the Royal Society from 1995 to 2000.
Senegalimassilia faecalis sp. nov., an anaerobic actinobacterium isolated from human faeces, and emended description of the genus Senegalimassilia
Authors: Han Kook-Il , Kim Ji-Sun , Lee Keun Chul , Eom Mi Kyung , Suh Min Kuk , Kim Han Sol , Park Seung-Hwan , Lee Ju Huck , Kang Se Won , Park Jam-Eon , Oh Byeong Seob , Yu Seung Yeob , Choi Seung-Hyeon , Lee Dong Ho , Yoon Hyuk , Kim Byung-Yong , Lee Je Hee , Lee Jung-Sook
Published: January 2020

A novel actinobacterial strain, designated KGMB04484T, was isolated from healthy human faeces sampled in the Republic of Korea. Cells of strain KGMB04484T were strictly anaerobic, Gram-stain-positive, catalase-positive, oxidase-negative, non-motile coccobacilli and formed tiny colonies on Columbia agar with 5 % horse blood. On the basis of 16S rRNA gene sequence similarity, strain KGMB04484T was affiliated with the genus

Senegalimassilia

in the family

Coriobacteriaceae

and its closest relative was

Senegalimassilia anaerobia

JC110T (96.28 % sequence similarity). The DNA G+C content of strain KGMB04484T was 61.2 mol%. The polar lipids contained diphosphatidylglycerol, phosphatidylglycerol, an unidentified phospholipid, an unidentified aminolipid and three unidentified glycolipids. The predominant cellular fatty acids (>10 %) of strain KGMB04484T were C14 : 0, C16 : 0 and C16 : 0 dimethyl acetal. Based on its phylogenetic, physiological and chemotaxonomic characteristics, strain KGMB04484T is considered to represent a novel species within the genus

Senegalimassilia

, for which the name Senegalimassilia faecalis sp. nov. is proposed. The type strain is KGMB04484T (=KCTC 15721T=CCUG 72347T).
GTO: a toolkit to unify pipelines in genomic and proteomic research
Authors: Almeida João R. , Pinho Armando J. , Oliveira José L. , Fajarda Olga , Pratas Diogo
Published: January 2020

Next-generation sequencing triggered the production of a massive volume of publicly available data and the development of new specialised tools. These tools are dispersed over different frameworks, making the management and analyses of the data a challenging task. Additionally, new targeted tools are needed, given the dynamics and specificities of the field. We present GTO, a comprehensive toolkit designed to unify pipelines in genomic and proteomic research, which combines specialised tools for analysis, simulation, compression, development, visualisation, and transformation of the data. This toolkit combines novel tools with a modular architecture, being an excellent platform for experimental scientists, as well as a useful resource for teaching bioinformatics inquiry to students in life sciences.

Availability and implementation

GTO is implemented in C language and it is available, under the MIT license, athttp://bioinformatics.ua.pt/gto.

Contact

pratas@ua.pt

Supplementary information

Supplementary data are available at publisher’s Web site.
Dose-Dependent Induction Of CPP Or CPA By Intra-pVTA Ethanol: Role Of Mu Opioid Receptors And Effects On NMDA Receptors
Authors: Campos-Jurado Yolanda , Martí-Prats Lucía , Morón Jose A. , Polache Ana , Granero Luis , Hipólito Lucía
Published: January 2020

The neurobiological mechanisms underlying alcohol motivational properties are still not fully understood, however, the mu-opioid receptors (MORs) have been evidenced as central elements in the manifestation of the alcohol reinforcing properties. Drug-associated environmental stimuli can trigger alcohol relapse and promote alcohol consumption whereby N-methyl-D-aspartate (NMDA) receptors play a pivotal role. Here we sought to demonstrate, for the first time, that ethanol induces conditioned place preference or aversion (CPP or CPA) when administered locally into the ventral tegmental area (VTA) and the associated role of MORs. We further analyzed the changes in the expression and mRNA levels of GluN1 and GluN2A subunits in designated brain areas. The expression of CPP or CPA was characterized following intra-VTA ethanol administration and we showed that either reinforcing (CPP) or aversive (CPA) properties are dependent on the dose administered (ranging here from 35 to 300 nmol). Furthermore, the critical contribution of local MORs in the acquisition of CPP was revealed by a selective antagonist, namely β-Funaltrexamine. Finally, modifications of the expression of NMDA receptor subunits in the Nucleus Accumbens (NAc) and Hippocampus after ethanol-induced CPP were analyzed at the proteomic and transcriptomic levels by western blot andIn SituHybridation RNAscope techniques, respectively. Results showed that the mRNA levels of GluN2A but not GluN1 in NAc are higher after ethanol CPP. These novel results pave the way for further characterisation of the mechanisms by which ethanol motivational properties are associated with learned environmental cues.
Titanium carbide’s effects on coatings formed on D16T aluminum alloy by plasma electrolytic oxidation
Authors: Liu Wanying , Yang Junjie , Qiu Yuhong , Liu Ying , Deng Kuanhai
Published: January 2020

Purpose

The preferable concentration of titanium carbide was optimized and added as an additive to the micro-arc oxidation electrolyte to produce a high corrosion-resistant coating on D16T aluminum alloy.

Design/methodology/approach

Ceramic coatings were deposited on D16T aluminum alloy by plasma electrolytic oxidation in alkaline silicate electrolytes with micron titanium carbide particle suspending at different concentrations. Influences of additive concentration on morphology, elemental and phase composition and corrosion resistance of doped PEO coatings were evaluated by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and electrochemical methods, respectively.

Findings

Results revealed that suspending titanium carbide additives incorporated into ceramic coatings through discharging channels and chemically transformed into amorphous stage. The content of titanium in the doped coatings increased with the increasing concentration of suspending micron additive. Compared with the coating without particle addition, the corrosion resistance of the coating produced in 8 g/L titanium carbide suspension increased more than 20 times. The result indicated that the incorporation of titanium into the PEO coatings formed on the D16T aluminum alloy could effectively improve the corrosion resistance.

Originality/value

The mechanism of corporation of TiC and the mechanism of improving the corrosion resistance of the coating were proposed.
“Accelerating” and “jumping” internationalization
Authors: Weihong Chen , Xi Zhong , Lan Hailin , Zhiyuan Li
Published: January 2020

Purpose

In recent years, the phenomena of “accelerating” and “jumping” during the international expansion of Chinese enterprises have attracted a lot of attention from scholars. However, while a CEO’s career horizon can significantly affect his or her enterprise’s strategic decision-making, few studies have explored the role of CEO career horizon in terms of “accelerating” and “jumping” internationalization.

Design/methodology/approach

Based on a sample of China’s A-share listed manufacturing companies from 2008 to 2017, this study explores the impact of CEO career horizon on the internationalization pace and international rhythm of enterprises.

Findings

First, the shorter the CEO’s career horizon, the more likely the CEO can avoid risky strategic decisions, which ultimately causes a negative relationship between CEO career horizon and the internationalization pace and rhythm of the enterprise. Second, for larger and older boards of directors, there is a more negative impact of the CEO’s short-term career horizon on the internationalization pace and internationalization rhythm of the company. However, given a larger proportion of female directors and non-executive directors, the CEO’s short-term career horizon has a weaker negative impact on international pace and the rhythm of internationalization.

Originality/value

First, based on upper echelon theory, this study interprets the influence of CEO career horizon on the time dimension of corporate internationalization (including internationalization pace and international rhythm), deepening the theory’s explanatory power. Second, by clarifying the important predictive effect of CEO career horizon on internationalization pace and international rhythm, this research enriches extant research on both variables’ antecedents, as well as that on the influence of CEO career horizon. Finally, by introducing the regulatory role of the board’s supervisory ability, this study clarifies the boundary conditions for the influence of the CEO’s career horizon on international pace and rhythm, and it expands the literature on how CEOs and boards of directors can influence corporate strategic decisions during the internationalization process.
Advanced heavy water reactor control with the aid of adaptive second-order sliding mode controller
Authors: Roy Rupam Gupta , Ghoshal Dibyendu
Published: January 2020

Purpose

Advanced heavy water reactor (AHWR) is a pressure tube type of heavy water reactor. It eliminates high-pressure heavy water coolant resulting in a reduction of heavy water leakage losses and eliminating heavy water recovery system. It recovers the heat generated in the moderator for feed water heating. However, it requires a satisfactory technological response to develop an effective controller that attains the challenges of the very high-level safety system. Hence, they require application-specific improvement for better controlling performance.

Design/methodology/approach

The purpose of this study intends to propose a system for controlling state vectors v1 and v2and in AHWR using Grey Wolf second-order sliding mode control (GW-SoSMC) technique. The main aim of the paper is to minimize the errors between the predicted and desired azimuthal angles of the system. With this proposed method, it is possible to mitigate both the chattering phenomenon and controlling performance of AHWR system. It implements a SoSMC controller based on GWO algorithm for the purpose of controlling the state vectors in the AHWR system. It aims to accomplish a controller for improving the performance of the AHWR system.

Findings

Through the performance analysis, the efficiency of the proposed GW-SoSMC technique was verified by comparing it with various conventional algorithms, such as GW-SMC, FF-SoSMC, ABC-SoSMC, GS-SoSMC and GA-SoSMC. From the analysis, it was obtained that the implemented GW-SoSMC technique was 65.3 per cent superior to GW-SMC, 65.32 per cent superior to both FF-SoSMC and 65 per cent superior to ABC-SoSMC, 65.8 per cent superior to the GS-SoSMC and 58 per cent superior to the GA-SoSMC methods. Thus, the effectiveness of the proposed method in controlling the state vectors in AHWR was obtained.

Originality/value

This paper presents a technique for controlling the state vectors in the AHWR system using GWO algorithm. This is the first work that uses GWO-based optimization for controlling state vectors in the AHWR system.
Modeling and simulation of sheets ply separation induced by air flow
Authors: He Xin , Li XiaoPing , Yang Jinrong
Published: January 2020

Purpose

The purpose of this paper is to investigate the mechanism of sheets ply separation induced by air flow through numerical simulation with two-way FSI (fluid-structure interaction) simulation using ANSYS and theoretical speculation.

Design/methodology/approach

The paper primarily establishes a simplified physical model of the sheets ply separation induced by air flow. Then, the force of the air flow acting on the sheet has been analyzed based on the model, and the main factor leading to separation was obtained. Furthermore, the parameter analysis was investigated based on linear stability analysis, from which the factors that affect stable separation are obtained. Finally, a series of numerical simulations are performed to verify the conclusions.

Findings

This study shows that the main separation factor is the variable air pressure in the gap between the sheets caused by the dynamic pressure air flow. Increasing the inlet velocity of the flow field will increase the separation distance but excessive velocity will lead to instability. The viscous resistance acting on the sheet and the bending stiffness of the sheet are factors that stabilize the system, and the sheet density and the restoring force can lead to instability.

Originality/value

The paper is one of the first in the literature that investigates the problem of sheets ply separation induced by air flow, which is the primary method for multi-layer separation in sheets de-stacking operations, especially for the high-speed occasion.
Analysis of the concrete shrinkage effects on the real behavior of the spatial concrete and reinforced concrete structures using the thermal analogy
Authors: Džolan Ante , Kožul Mladen , Harapin Alen , Ćubela Dragan
Published: January 2020

Purpose

This paper aims to present an approach for the numerical simulation of concrete shrinkage. First, some physical mechanisms of shrinkage are described and then the developed numerical model for the analysis of shrinkage of spatial three-dimensional structures using thermal analogy is presented. Results of the real behavior of structures because of concrete shrinkage using the developed numerical model are compared with the experimental and it is clearly shown that the developed numerical model is an efficient tool in predicting the time-dependent behavior of all concrete structures.

Design/methodology/approach

In this paper, Fib Model Code 2010 to predict shrinkage deformation of concrete is used, and it was incorporated in the three-dimensional numerical model using the thermal analogy. Mentioned three-dimensional numerical model uses the modified Rankine material law to describe concrete behavior in tension and modified Mohr-Coulomb material law to describe concrete behavior in compression. The developed three-dimensional numerical model successfully analyzes the behavior of reinforced and/or prestressed concrete structures including time-dependent deformations of concrete as well.

Findings

Results are shown in this paper clearly demonstrate the reliability of the developed numerical model in predicting the shrinkage strain, as well as its impact on concrete and reinforced concrete structures. The results obtained using the developed numerical model are in better agreement with the experimental results, than the results obtained using the numerical models from literature that also use the Fib Model Code 2010 to predict the shrinkage strain. So, it can be concluded that for a real simulation of concrete structures, alongside the model for predicting the shrinkage strain, the models for concrete behavior in tension and compression have a very important role.

Originality/value

Results of the developed three-dimensional numerical model were compared with experimental results from literature and with theoretical foundations, and it can be talked that this numerical model presents a good tool for analysis of reinforced and prestressed concrete structures including shrinkage deformation of concrete. Results obtained using the developed three-dimensional numerical model are better agreed with experimental than results of other numerical model from literature.
Computational mechanics of the paddlefish rostrum
Authors: Riveros Guillermo A. , Acosta Felipe J. , Patel Reena R. , Hodo Wayne
Published: January 2020

Purpose

The rostrum of a paddlefish provides hydrodynamic stability during feeding process in addition to detect the food using receptors that are randomly distributed in the rostrum. The exterior tissue of the rostrum covers the cartilage that surrounds the bones forming interlocking star shaped bones.

Design/methodology/approach

The aim of this work is to assess the mechanical behavior of four finite element models varying the type of formulation as follows: linear-reduced integration, linear-full integration, quadratic-reduced integration and quadratic-full integration. The paper also presents the load transfer mechanisms of the bone structure of the rostrum. The base material used in the study was steel with elastic–plastic behavior as a homogeneous material before applying materials properties that represents the behavior of bones, cartilages and tissues.

Findings

Conclusions are based on comparison among the four models. There is no significant difference between integration orders for similar type of elements. Quadratic-reduced integration formulation resulted in lower structural stiffness compared with linear formulation as seen by higher displacements and stresses than using linearly formulated elements. It is concluded that second-order elements with reduced integration are the alternative to analyze biological structures as they can better adapt to the complex natural contours and can model accurately stress concentrations and distributions without over stiffening their general response.

Originality/value

The use of advanced computational mechanics techniques to analyze the complex geometry and components of the paddlefish rostrum provides a viable avenue to gain fundamental understanding of the proper finite element formulation needed to successfully obtain the system behavior and hot spot locations.
The role of talent management in strategic renewal
Authors: Järvi Kati , Khoreva Violetta
Published: January 2020

Purpose

The purpose of this paper is to emphasize the role of talent management (TM) in strategic renewal. Furthermore, the authors extend the existing knowledge on the process of TM implementation by underlining particular activities, which are involved in this process during strategic renewal.

Design/methodology/approach

The authors report a qualitative study of a TM program in a Finnish–Swedish Multinational corporation undergoing major strategic renewal. The data consist of 46 semi-structured interviews and secondary data.

Findings

The role of TM in the context of strategic renewal is to provide the conditions for the self-initiation and identification of potential change agents and for the development of the talented employees to perform in their roles of change agent. In the context of strategic renewal, TM process consists of identification of key projects to address critical business opportunities and challenges, the identification of talented employees to execute them, and the identification and creation of key positions.

Research limitations/implications

The authors encourage scholars to explore the empirical settings characterized by change and unpredictability in more detail, and thus examine the role of talented employees and TM in other specific contexts. Future studies are also encouraged to study other cultural settings and examine to what degree the process of TM implementation may positively influence attitudes and behaviors of talented employees and, consequently, the overall organizational performance.

Practical implications

This study offers practical advice for top management and HR managers. First, the process of TM implementation during strategic renewal should start with the identification of “must-win-battles” that can have a more profound impact on change. Furthermore, top management should allow and enable motivated potential talented employees to volunteer for the job of aiding company-wide changes. Next, top management should provide the talented employees with the space to come up with novel ideas and conceive new business opportunities. Finally, the importance of transparent and spot-on evaluation criteria should be emphasized.

Originality/value

The study contributes to advancing our understanding of TM and strategic management in practice.
Big data: lessons for employers and employees
Authors: Jeske Debora , Calvard Thomas
Published: January 2020

Purpose

The purpose of this paper is to critically reflect on the pros and cons of using employee information in big data projects.

Design/methodology/approach

The authors reviewed papers in the area of big data that has immediate repercussions for the experiences of employees and employers.

Findings

The review of papers to date suggests that big data lessons based on employee data are still a relatively unknown area of employment literature. Particular attention is paid to discussion of employee rights, ethics, expectations and the implications employer conduct has on employment relationships and prospective benefits of big data analytics at work for work.

Originality/value

This viewpoint paper highlights the need for more discussion between employees and employers about the collection, use, storage and ownership of data in the workplace. A number of recommendations are put forward to support future data collection efforts in organisations.
Exploring the influence of paternalistic leadership on voice behavior
Authors: Jia Jianfeng , Zhou Shunyi , Zhang Long , Jiang Xiaoxiao
Published: January 2020

Purpose

Drawn upon the perspective of implicit voice theory, the purpose of this paper is to explore the underlying mechanism as well as the boundary effect in the relationship between paternalistic leadership and voice behavior.

Design/methodology/approach

Multiple-wave survey data from a sample of 368 employees in China were used to test the hypothesized moderated mediation model.

Findings

The findings show that both benevolent leadership and moral leadership related positively to voice behavior, whereas authoritative leadership played a negative role in influencing voice behavior. Employees’ implicit voice belief played a partial mediating role between paternalistic leadership and voice behavior. Furthermore, perceived HRM strength weakens both the mediation relationship among benevolent leadership, implicit voice belief and voice behavior, and the mediation relationship among moral leadership, implicit voice belief and voice behavior. However, the moderated mediation effect of implicit voice belief on the relationship between authoritative leadership and voice behavior is not significant.

Practical implications

Leaders are encouraged to behave benevolently and morally whereas to avoid excessive authoritative style at work, so that employees can be encouraged to speak out. Organizations are advised to introduce management practices like training and development sessions and to improve employees’ perceived HRM strength so that the implicit voice belief can be reduced, and the voice behavior can be stimulated.

Originality/value

The research provided a fresh theoretical perspective on the underlying mechanism between paternalistic leadership and employees’ voice behavior by unveiling employee implicit voice belief’s partial mediating role between paternalistic leadership and employee voice behavior. Furthermore, the study contributed to the literature of voice by adopting a more integrative perspective and exploring the role of the implementation of the organization’s system, i.e., perceived HRM strength that provided a boundary condition in the above mediation model.
Monological practices, authoritative discourses and the missing “C” in digital classroom communities
Authors: Hosek Vicki A. , Handsfield Lara J.
Published: January 2020

Purpose

The purpose of this study was to examine teacher decisions surrounding opportunities for student voice, experiences and beliefs in digital classroom communities. The teachers’ decisions reflect monologic rather than dialogic teacher pedagogies which prompted the authors to ask the following question: What led to these teacher-centered practices in digital environments?

Design/methodology/approach

Authoritative discourses in school policies and a missing connection between critical pedagogies and teachers’ technology practices are examined in light of teachers’ decisions to engage in monologic and/or dialogic teaching practices. The authors propose professional development and research that emphasize pedagogy that supports student voice as foundational to practices involving digital literacies.

Findings

Examination of the teachers’ decisions showed monologic practices void of student opportunities to critically engage in digital environments. Dominant discourses imposed through protectionist and digital citizenship policies of schools as well as lack of opportunity through professional development to connect critical pedagogy to technology impacted the teachers’ decisions.

Originality/value

Current research surrounding teachers’ digital literacies uses the TPACK framework to examine technology integration practices. Missing is a critical component that addresses and works to dismantle the dominant discourses and power structures in digital communities (Author, 2018). The authors build on research in critical digital literacies to argue for adding the critical missing “C” into the TPACK framework (C-TPACK) to move researchers and educators to consider pedagogies that examine ideologies at work in digital communities to provide opportunities for student voice.
Greater fit and a greater gap
Authors: Brieger Steven A. , De Clercq Dirk , Hessels Jolanda , Pfeifer Christian
Published: January 2020

Purpose

The purpose of this paper is to understand how national institutional environments contribute to differences in life satisfaction between entrepreneurs and employees.

Design/methodology/approach

Leveraging person–environment fit and institutional theories and using a sample of more than 70,000 entrepreneurs and employees from 43 countries, the study investigates how the impact of entrepreneurial activity on life satisfaction differs in various environmental contexts. An entrepreneur’s life satisfaction arguably should increase when a high degree of compatibility or fit exists between his or her choice to be an entrepreneur and the informal and formal institutional environment.

Findings

The study finds that differences in life satisfaction between entrepreneurs and employees are larger in countries with high power distance, low uncertainty avoidance, extant entrepreneurship policies, low commercial profit taxes and low worker rights.

Originality/value

This study sheds new light on how entrepreneurial activity affects life satisfaction, contingent on the informal and formal institutions in a country that support entrepreneurship by its residents.
Values and career behaviours of entrepreneurs and employees
Authors: Gaile Anita , Baumane-Vitolina Ilona , Sumilo Erika , Skiltere Daina , Flores Ricardo Martin
Published: January 2020

Purpose

The purpose of this paper is to determine the differences in the values and behaviours of employees and entrepreneurs and to develop guidelines for employers to foster entrepreneurial thinking in their organisations.

Design/methodology/approach

To determine individual behaviours, the authors used the career adaptability scale developed by Savickas and Porfelli (2012), complemented with the statements regarding relationships in the workplace and reward, designed by Gattiker and Larwood (1986). The individual values were evaluated by Schwartz’s individual value framework. The career success of individuals was defined by income level and job satisfaction. Data from a sample of 473 respondents were analysed using structural equation modelling.

Findings

This paper reveals that there are differences in the behaviours and the values of employees and entrepreneurs. Employees are more concerned with relationships at the workplace, rewards and confidence, whereas entrepreneurs focus solely on relationships. Self-direction value has a direct positive impact. Universalism, conformism, achievement, stimulation and safety have indirect positive effects on career success for employees. There is no specific individual value driving career success for entrepreneurs.

Originality/value

This paper follows the recent trends in organisational culture development whereby organisations seek to incorporate the entrepreneurial mindset at all levels of the organisation. Until now, there has been scarce empirical evidence on the differences between entrepreneurial and employee values. This research provides evidence that the value gap between these two distinct groups is considerable enough to question the ability of the average employee to adopt the entrepreneurial behaviour required by modern organisations.
On the dynamic relationship between gold investor sentiment index and stock market
Authors: Padungsaksawasdi Chaiyuth
Published: January 2020

Purpose

Considering the unique data of the gold investor sentiment index in Thailand, the purpose of this paper is to investigate the bivariate dynamic relationship between the gold investor sentiment index and stock market return, as well as that between the gold investor sentiment index and stock market volatility, using the panel vector autoregression (PVAR) methodology. The author presents and discusses the findings both for the full sample and at the industry level. The results support prior literature that stocks in different industries do not react similarly to investor sentiment.

Design/methodology/approach

The PVAR methodology with the GMM estimation is found to be superior to other static panel methodologies due to considering both unobservable time-invariant and time-variant factors, as well as being suitable for relatively short time periods. The panel data approach improves the statistical power of the tests and ensures more reliable results.

Findings

In general, a negative and unidirectional association from gold investor sentiment to stock returns is observed. However, the gold sentiment-stock realized volatility relationship is negative and bidirectional, and there exists a greater impact of a stock’s realized volatility on gold investor sentiment. Importantly, evidence at the industry level is stronger than that at the aggregate level in both return and volatility cases, confirming the role of gold investor sentiment in the Thai stock market. The capital flow effect and the contagion effect explain the gold sentiment-stock return relationship and the gold sentiment-stock volatility relationship, respectively.

Research limitations/implications

The gold price sentiment index can be used as a factor for stock return predictability and stock realized volatility predictability in the Thai equity market.

Practical implications

Practitioners and traders can employ the gold price sentiment index to make a profit in the stock market in Thailand.

Originality/value

This is the first paper to use panel data to investigate the relationships between the gold investor sentiment and stock returns and between the gold investor sentiment and stocks’ realized volatility, respectively.
Assessing the role of product category involvement and relationship proneness in the satisfaction–loyalty link in retailing
Authors: Menidjel Choukri , Benhabib Abderrezzak , Bilgihan Anil , Madanoglu Melih
Published: January 2020

Purpose

Product category involvement and relationship proneness are crucial in explaining relationship outcomes. Nevertheless, the authors know little about their roles in the formation of loyalty, especially in the retail industry. Individual consumer traits and preferences are likely to play a critical role in the success of relationship marketing. Yet, relationship marketing studies have fallen short of considering such individual differences. The purpose of this paper is to examine the mediating effects of product category involvement and relationship proneness on the relationship between satisfaction and loyalty in retail clothing stores.

Design/methodology/approach

Data were obtained using a survey of 220 consumers. Partial least squares structural equation modeling was employed to test the proposed theoretical model.

Findings

The results show that satisfaction significantly affects product category involvement and relationship proneness, which, in turn, significantly affect purchase intention and word-of-mouth (WOM). The results also show that product category involvement and relationship proneness partially mediate the impact of satisfaction on purchase intention and WOM.

Research limitations/implications

Product category involvement and relationship proneness play a critical role in explaining the satisfaction–loyalty link. Future research could consider the role of potential moderating variables.

Practical implications

Retail managers should not only focus on improving customer satisfaction to achieve customer loyalty, but should also consider the importance of product category involvement and relationship proneness, and their role in the formation of customer loyalty both in traditional and online environments.

Originality/value

To the best of the authors’ knowledge, this study is the first to explore the mediating effects of product category involvement and relationship proneness on the relationship between satisfaction, purchase intention and WOM in the retail industry.
Health insurance ownership and its impact on healthcare utilization
Authors: Sisira Kumara Ajantha , Samaratunge Ramanie
Published: January 2020

Purpose

The purpose of this paper is to explore the determinants of health insurance ownership of individuals in the Sri Lankan labor force and to examine how insurance ownership impacts healthcare utilization.

Design/methodology/approach

The authors first used logit model to explore determinants of health insurance ownership. The authors then employed propensity score matching method to estimate impact of insurance ownership on healthcare utilization. Data were obtained from national survey of self-reported health in Sri Lanka – 2014 (n=59,276). National survey of self-reported health in Sri Lanka – 2014 was conducted by the Department of Census and Statistics from January to December 2014.

Findings

Results showed that individuals with higher educational attainments, headed by literate-heads, based in urban sector, employed in formal sector, and with health adversities and higher degree of risk propensity are more inclined to have a health cover. Health insurance ownership reduces the likelihood of utilizing public facilities while increasing the likelihood of utilizing private facilities for non-communicable diseases (NCDs) and acute illnesses. Welfare consequences of expanding insurance ownership are doubtful due to oligopolistic private healthcare market and adverse selection issue faced by insurers in Sri Lanka.

Originality/value

This is the first study examining health insurance–healthcare utilization nexus based on Sri Lanka-wide microdata. Also, the study applies bias-corrected matching methods to establish causal links between two constructs. Without being so generalized, healthcare utilization is examined in terms of NCD care and Acute illnesses care, which improves robustness of results and leads to evidence-based healthcare policies.

Peer review

The peer review history for this paper is available at: https//publons.com/publon/10.1108/IJSE-05-2019-0333.
Active citizenship in Europe: the role of social capital
Authors: Guagnano Giuseppina , Santini Isabella
Published: January 2020

Purpose

The purpose of this paper is to show if and to what extent in the EU countries the probability of being an active citizen depends on individual/household social capital endowment, other than on individual/household socio-economic characteristics. The paper provides a deeper insight of the determinants of active citizenship due to the growing concern of the European Commission with citizens’ issues.

Design/methodology/approach

The core of the paper, which adopts a micro-level perspective, is an empirical analysis, based on a logistic model, of the EU-SILC 2015 survey data.

Findings

The statistical analysis reveals that individual/household social capital, other than individual/household socio-economic characteristics, represents an important prerequisite for a citizen to be defined as “active.”

Research limitations/implications

There may be a possible reverse causation between active citizenship and social capital, making this last endogenous. Therefore, results should be taken with some cautions; nevertheless, the estimated effects of the individual/household socio-economic characteristics are coherent with the literature, giving strenght to the results obtained in estimating social capital effects.

Practical implications

The results show that active citizenship could be enhanced by promoting “desirable” aspects of social capital through specific policies addressed to raise people’s civic and political awareness, active solidarity and connectedness and cooperation between individuals within the communities for their own benefit. Moreover, a crucial role in enhancing active citizenship can be undoubtedly played by a lifelong learning process, from school to adult age, directed to maintain and acquire skills as drivers for active citizenship.

Originality/value

This study fills a significant gap in the literature, since so far little attention has been paid to individual/household social capital endowment as possible determinant of active citizenship.
Polarizing the middle: internet exposure and public opinion
Authors: Bryson Bethany P.
Published: January 2020

Purpose

Research on opinion polarization in the USA repeatedly finds more divergence among politically privileged groups: respondents who are college educated, politically interested, party identified or have a liberal/conservative orientation. The purpose of this paper is to examine whether their excluded counterparts can be polarized by exposure to political information on the internet.

Design/methodology/approach

Quantile regression and visual analysis of raw data from the online and face-to-face samples in the 2012 and 2016 American National Election Studies (n=9,563) assessed the impact of online political information on opinion polarization among ideological moderates, political Independents, respondents without a college degree, and those with low interest in politics.

Findings

Exposure to online political information during the survey was associated with significant polarizing shifts toward more consistent ideological positions in all four groups.

Practical implications

Engaging the middle is a social justice issue as much as a matter of political conflict, and evidence suggests that politically excluded groups use the internet to translate their own views into the language of policy opinions and popular (polarized) politics. Recommended policy interventions include information literacy programs. Further research should use experimental models and browser histories.

Originality/value

Current research on political polarization leaves open the question of whether larger portions of the electorate are available to join the fray. This study shows that excluded publics can be polarized via exposure to online information.
Forecasting container throughput with long short-term memory networks
Authors: Shankar Sonali , Ilavarasan P. Vigneswara , Punia Sushil , Singh Surya Prakash
Published: January 2020

Purpose

Better forecasting always leads to better management and planning of the operations. The container throughput data are complex and often have multiple seasonality. This makes it difficult to forecast accurately. The purpose of this paper is to forecast container throughput using deep learning methods and benchmark its performance over other traditional time-series methods.

Design/methodology/approach

In this study, long short-term memory (LSTM) networks are implemented to forecast container throughput. The container throughput data of the Port of Singapore are used for empirical analysis. The forecasting performance of the LSTM model is compared with seven different time-series forecasting methods, namely, autoregressive integrated moving average (ARIMA), simple exponential smoothing, Holt–Winter’s, error-trend-seasonality, trigonometric regressors (TBATS), neural network (NN) and ARIMA + NN. The relative error matrix is used to analyze the performance of the different models with respect to bias, accuracy and uncertainty.

Findings

The results showed that LSTM outperformed all other benchmark methods. From a statistical perspective, the Diebold–Mariano test is also conducted to further substantiate better forecasting performance of LSTM over other counterpart methods.

Originality/value

The proposed study is a contribution to the literature on the container throughput forecasting and adds value to the supply chain theory of forecasting. Second, this study explained the architecture of the deep-learning-based LSTM method and discussed in detail the steps to implement it.
Middle managers’ roles after a hospital merger
Authors: Solstad Elsa , Petterson Inger Johanne
Published: January 2020

Purpose

Mergers are important and challenging elements in hospital reforms. The authors study the social aspects of management and the roles of middle managers in the aftermath of a hospital merger. Especially, the purpose of this paper is to investigate how professional staff and middle managers perceive their relationships with top managers several years after the merger.

Design/methodology/approach

A survey was conducted among the professional staff in two merging hospitals’ units six years after a merger. Based on the main findings from this survey, a follow-up interview study was done with a group of middle managers.

Findings

The management practices were diagnostic with few interactive or communicative activities. The respondents expressed that mistrust developed between the staff and the top management, and a lack of involvement and interaction lead to decoupled and parallel organizations. Social controls, based on shared norms, had not been developed to create mutual commitment and engagement.

Practical implications

Policy makers should be aware of the need in profound change processes not only to change the tangible elements, but to take care of changing the less tangible elements such as norms and values. Professionals in hospitals are in powerful positions, and changes in such organizations are dependent on trust-building, bottom-up initiatives and evolutionary pathways.

Originality/value

The paper addresses the need to understand the dynamics of the social aspect in managing hospitals as knowledge-intensive organizations when comprehensive restructuring processes are taking place over several years.
Toward Islamic deposit insurance model
Authors: Fendi Usama Adnan
Published: January 2020

Purpose

This paper aims to provide an essential framework for establishingShariah-compliant deposit insurance scheme, by reviewing theShariahprovisions concerning the available approaches for deposit guarantee, types of deposits in Islamic financial institutions and the permissible party to incur the cost of this guarantee.

Design/methodology/approach

This paper reviews theFiqhrules and principles approved by the well-known IslamicFiqhreferences, as well as the resolutions of International Islamic Fiqh Academy (IIFA) andShariahstandards issued by Accounting and Auditing Organization for Islamic Financial Institutions (AAOIFI), and presents these resolutions and judgments in a modern applicable way.

Findings

This paper recommends that the Islamic scheme for deposit insurance should be established based onTakafulinsurance principle, and this scheme must adopt fund segregation principle to comply withShariahprovisions for guarantee permissibility.

Research limitations/implications

The paper bridges the gap between theory and practice by highlighting how the proposed model can be initiated in practice, thus, it can influence public policy in countries with Islamic banking system.

Originality/value

This paper represents a significant contribution toward the establishment of a consensualShariah-compliant Islamic deposit insurance model.