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Article
Publication date: 5 March 2018

Le Nhat Hoang Tran, Laurent Gerbaud, Nicolas Retière and Hieu Nguyen Huu

Static converters generate current harmonics in power grids. For numerous studies, analytical frequency modeling is preferred to carry out their harmonic modeling in the context…

66

Abstract

Purpose

Static converters generate current harmonics in power grids. For numerous studies, analytical frequency modeling is preferred to carry out their harmonic modeling in the context of sizing by optimization. However, a design by optimization has to consider other constraints, e.g. modeling constraints and operating constraints. In this way, this paper aims to focus on applying an analytical frequency modeling on the sizing by optimization of an aircraft electrical power channel.

Design/methodology/approach

The paper aims to size a multiphysical system by optimization. In this way, the sizing of an aircraft electrical power channel by optimization has been carried out. The models of all the channel components are analytical. Specifically, the frequency model of the power electronics is based on Tran et al. (2016) and is made of equalities and inequalities. Due to this modeling choice, the optimization satisfies hundreds of constraints, such as modeling constraints and static converter operating constraints. Furthermore, transient constraints are only verified after optimization.

Findings

The difficulty is the modeling of the system by taking into account nonlinear implicit equations having several solutions. A solution is the addition of inequality constraints to the model to guide the implicit solving. Furthermore, this greatly helps the optimization algorithm to find the good operating mode of the static converter, at steady state. This aspect is indispensable to validate the sizing model.

Research limitations/implications

The number of the configurations per operating period of the static converters is defined a priori and limited.

Originality/value

The analytical model for the sizing is formulated as a constrained optimization problem. Its solving and the sizing by optimization are carried out by the same optimization algorithm.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 37 no. 2
Type: Research Article
ISSN: 0332-1649

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Article
Publication date: 28 August 2023

Quan Hoang Nguyen Tran

This study aims to inspect the organizational culture of academic libraries in Vietnam and China, and the objective was to investigate how the academic libraries in Vietnam and…

269

Abstract

Purpose

This study aims to inspect the organizational culture of academic libraries in Vietnam and China, and the objective was to investigate how the academic libraries in Vietnam and China differ in organizational culture’s task, unity and status orientations.

Design/methodology/approach

This study surveyed 546 academic library staff in China and Vietnam to fulfill this objective. Exploratory factor analysis, confirmatory factor analysis and paired t-tests are used to explore whether the organizational culture in the academic libraries in Vietnam and China is different in terms of task orientation, unity orientation and status orientation.

Findings

The results from the data concluded that academic libraries in Vietnam had a higher score on task and status orientations than their Chinese counterparts. In this study, there were no coherent factors regarding unity orientation.

Practical implications

This research expresses several solutions to address the problems in academic libraries in Vietnam and China. Scholars and practitioners can benefit from this research as it is a foundation to support them in understanding the organizational culture of libraries in two countries.

Originality/value

This research expands the scope of organizational culture literature in the Asian library sector. Given that no prior studies have compared the library cultures between the two countries, this study is a novelty. The findings of this research can support academic library staff, leaders and practitioners in Vietnam and China to understand their organizational culture. The research also identifies some recommendations to improve the academic library culture in Vietnam and China.

Details

Global Knowledge, Memory and Communication, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2514-9342

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Article
Publication date: 16 February 2024

Quan Hoang Nguyen Tran

This paper examines the associations between leadership behaviours, organizational commitment, occupational stress and organisational citizenship behaviours (OCBs) at the…

535

Abstract

Purpose

This paper examines the associations between leadership behaviours, organizational commitment, occupational stress and organisational citizenship behaviours (OCBs) at the Vietnamese private business school libraries. Another objective of this research is to explore the mediating role of organisational commitment and occupational stress on the connection between leadership behaviours and OCBs.

Design/methodology/approach

The authors collected 294 staffs from various Vietnamese private business school libraries.

Findings

The findings confirm that leadership dimensions significantly influence OCBs, and organisational commitment plays a mediating role in the relationship between relationship-oriented leadership behaviour (ROL) and OCBs.

Practical implications

The current result indicates that two types of leadership behaviour significantly affect employee citizen behaviours. Organisations should also distribute opportunities for workers to stick to citizenship behaviours by implementing organisational commitment interventions.

Originality/value

The obtained findings are a new exploration when no previous empirical literature has investigated the relationships among four constructs.

Details

Library Management, vol. 45 no. 1/2
Type: Research Article
ISSN: 0143-5124

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Article
Publication date: 15 November 2024

Quan Hoang Nguyen Tran

This study aims to examine the relationship between leadership behavior, organizational justice, person–organization fit and organizational citizenship behavior in the context of…

74

Abstract

Purpose

This study aims to examine the relationship between leadership behavior, organizational justice, person–organization fit and organizational citizenship behavior in the context of Vietnamese academic libraries. Using social exchange theory, this research indicates the impact of leadership behavior on organizational citizenship behavior. This study also examines the mediating role of organizational justice and person–organization fit in the relationship between leadership behavior and organizational citizenship behavior.

Design/methodology/approach

A total of 248 responses are obtained from academic library personnel in Vietnam, which are used to examine the research hypotheses.

Findings

The findings partially support the hypotheses because two leadership dimensions significantly influence organizational citizenship behavior, and organizational justice mediates the relationship between relationship-oriented leadership and organizational citizenship behavior. However, person–organization fit does not mediate the relationship between leadership behavior and organizational citizenship behavior.

Practical implications

Results indicate that two types of leadership behavior can significantly impact the organizational citizenship behavior of the librarians. Academic libraries should provide opportunities to librarians to engage in citizenship behavior by implementing organizational justice intervention.

Originality/value

This research contributes to the social exchange theory by integrating leadership behaviors, organizational justice, person–organization fit and organizational citizenship behaviors. Given that no prior studies have investigated the associations among four constructs, the obtained findings are a new exploration.

Details

The Learning Organization, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0969-6474

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Article
Publication date: 23 January 2023

Quan Hoang Nguyen Tran

This research aims to explore the influence of leadership skills (technical, human and conceptual) on organisational citizenship behaviour (OCB) with the mediating role of…

571

Abstract

Purpose

This research aims to explore the influence of leadership skills (technical, human and conceptual) on organisational citizenship behaviour (OCB) with the mediating role of organisational culture in Vietnamese libraries.

Design/methodology/approach

A quantitative methodology was selected to achieve the objective of this research. Data were gathered through paper/pencil surveys from 201 participants working in various Vietnamese libraries. The convergent validity, consistency reliability and discriminant validity of measures were validated challenged via Stata 15.1 software. The findings of the proposed hypotheses were examined via regression analysis.

Findings

The results partially supported the hypothesis that leadership skills significantly predict OCB. Regarding the relationship between leadership skills and organisational culture, only human skill significantly affected bureaucracy culture. In turn, only bureaucracy culture significantly affected the OCB of individuals (OCBI) and OCB of organisations (OCBO). Finally, bureaucracy culture significantly mediated the relationship between human skill, OCBI and OCBO.

Originality/value

This study opens the scope of research on leadership skills in Vietnamese libraries by exploring three main gaps in the extant studies of leadership approach, namely, the influence of three leadership skills on OCB, the role of leadership in promoting organisational culture and the underlying mechanism through which leadership skills contribute to OCB with the mediation of organisational culture. The implications of the research are discussed.

Details

Global Knowledge, Memory and Communication, vol. 74 no. 1/2
Type: Research Article
ISSN: 2514-9342

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Article
Publication date: 3 April 2023

Quan Hoang Nguyen Tran

The purpose of this study is to look into the relationship between leadership skills, especially technical, human and conceptual skills, and organizational citizenship behavior…

1089

Abstract

Purpose

The purpose of this study is to look into the relationship between leadership skills, especially technical, human and conceptual skills, and organizational citizenship behavior (OCB), with organizational culture acting as a mediator.

Design/methodology/approach

For the purpose of this study, a quantitative strategy was adopted. To collect data, paper/online surveys were administered to 294 individuals in various Vietnamese public organizations. Stata 15.1 was used to assess the reliability, validity and consistency of the measurements. Regression analysis was used to evaluate the proposed hypotheses.

Findings

It was discovered that leadership skills have a significant effect on OCB, which partially supported the hypotheses. However, only conceptual skill was found to have a significant impact on individual OCB (OCBI). Conceptual skill was also found to have a significant impact on supportive culture. In addition, only supportive culture had a significant effect on OCBI. Finally, supportive culture was confirmed to mediate the relationship between conceptual skill and OCBI.

Originality/value

This study adds to the social exchange theory by filling three significant gaps in previous research on leadership skills. First, it investigates the impact of three leadership skills on OCB in public organizations. Second, it examines the role of leadership skills in fostering an organizational culture. Third, the paper concludes by investigating the underlying mechanism through which leadership skills contribute to OCB via the mediation of organizational culture. The implications of these findings for practice are discussed.

Details

Industrial and Commercial Training, vol. 55 no. 3
Type: Research Article
ISSN: 0019-7858

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Article
Publication date: 28 June 2023

Quan Hoang Nguyen Tran

This study examines the working skills of Vietnamese librarians in terms of technical, human and conceptual skills. Then, this study suggests recommendations to improve their…

408

Abstract

Purpose

This study examines the working skills of Vietnamese librarians in terms of technical, human and conceptual skills. Then, this study suggests recommendations to improve their working skills.

Design/methodology/approach

To attain this objective, the study surveyed 243 Vietnamese librarians. Several statistical tests, including analysis of variance (ANOVA) and the paired t-test, were used to investigate differences in respondents' responses based on demographic variables such as gender, age, education and managerial level.

Findings

Gender appears to impact the working skill of Vietnamese librarians. In detail, the findings indicate that male librarians have higher technical skills than female librarians.

Research limitations/implications

This study opens the scope of working skill literature, particularly in the library sector. Notably, this is the first study investigating this issue in Vietnam. Given the current circumstances, suggesting practical recommendations to enhance the working skills of Vietnamese libraries is essential.

Originality/value

This is the first study examining Vietnamese librarians in technical, human and conceptual skills. Therefore, this research is essential in this field.

Details

Library Management, vol. 44 no. 6/7
Type: Research Article
ISSN: 0143-5124

Keywords

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Article
Publication date: 7 April 2023

Quan Hoang Nguyen Tran

This study aims to investigate the impact of leadership skills (technical, human and conceptual) on organizational citizenship behavior in Vietnamese libraries and the role of…

973

Abstract

Purpose

This study aims to investigate the impact of leadership skills (technical, human and conceptual) on organizational citizenship behavior in Vietnamese libraries and the role of organizational culture as the mediator.

Design/methodology/approach

A quantitative approach was chosen to gather data from 356 participants working in various libraries in Vietnam. The validity of the measures was assessed through regression analysis and SPSS software.

Findings

The results showed that leadership skills do have a significant impact on organizational citizenship behavior, but only human skills had a significant effect on bureaucracy culture. The study also revealed that bureaucracy culture played a significant role in affecting organizational citizenship behavior of organizations. Furthermore, bureaucracy culture was found to mediate the relationship between human skill and organizational citizenship behavior of organizations.

Originality/value

This study makes a valuable contribution to the field by exploring the influence of three types of leadership skills on organizational citizenship behavior and the role of leadership in promoting organizational culture. The findings of this research can help organizations understand the importance of leadership skills and organizational culture in promoting good citizenship behavior among employees. The research implications are discussed and can be used to inform decision-making and future research in the field.

Details

The Learning Organization, vol. 30 no. 3
Type: Research Article
ISSN: 0969-6474

Keywords

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Article
Publication date: 28 October 2022

Quan Hoang Nguyen Tran

The purpose of this paper is to investigate the impact of the work–family interface on organizational commitment with the mediating role of occupational stress and organizational…

399

Abstract

Purpose

The purpose of this paper is to investigate the impact of the work–family interface on organizational commitment with the mediating role of occupational stress and organizational justice in Vietnamese state sectors.

Design/methodology/approach

Empirical research is completed with a sample of 294 local respondents. Linear regression analysis is used to test hypotheses.

Findings

The findings of this paper indicate that work–family interfaces partially affect organizational commitment and occupational stress. Also, occupational stress partly plays a mediating role in the relationship between work–family interfaces and organizational commitment. This paper opens the scope of work–family interfaces in an emerging country (Vietnam).

Practical Implications

The results of this paper provide two practical implications for public Vietnamese organizations and leaders. First, superiors and administrators must establish policies for employees to decrease the adverse effects of work–family conflict. Second, supervisors and administrations at local public organizations should distribute additional training to help employees understand the detrimental impact of work–family conflict and occupational stress and how to solve them.

Originality/value

This paper strengthens the work–family theory by integrating the relationship between work–family interfaces, organizational justice, occupational stress and organizational commitment. As none of the prior literature has studied the relationship among four factors in Vietnam, the results are expected to fulfil this gap.

Details

Industrial and Commercial Training, vol. 55 no. 2
Type: Research Article
ISSN: 0019-7858

Keywords

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Article
Publication date: 23 January 2025

Tuan Duong Vu, Phuong Thao Vu, Thi Hoang Ha Tran and Thu Ha Nguyen

This study aims to evaluate the impact of several factors on the continuance participation intention of service providers in the sharing economy business model, i.e. food delivery…

12

Abstract

Purpose

This study aims to evaluate the impact of several factors on the continuance participation intention of service providers in the sharing economy business model, i.e. food delivery application (FDA) service.

Design/methodology/approach

Based on primary data collected from 282 service providers, this study used partial least squares structural equation modeling (PLS-SEM) to validate measurement scales and the proposed model.

Findings

The SEM analysis revealed that service providers’ intention to continue participating was influenced by perceived social benefit, perceived economic benefit and the corporate image of the service enabler. Notably, the relationship between perceived social benefit and continuance participation intention is moderated by the service enabler’s corporate image. Furthermore, this study identified four antecedents that impact on perceived benefit of service providers, namely, market attractiveness, and marketing capabilities of service enabler, delivery quality and customers’ positive affective response. However, the effect of marketing capabilities of the service enabler on perceived economic benefit was found to be irrelevant.

Originality/value

This study enriches the authors’ understanding of the factors that promote service providers’ intention to continue participating in the sharing economy business model, particularly within the context of FDAs. Based on the findings, the study offers both theoretical and practical implications for service enablers, policymakers and technology providers to enhance stakeholder engagement in the sharing economy business model.

Details

Journal of Asia Business Studies, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1558-7894

Keywords

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