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Article
Publication date: 18 January 2019

Tran Thien Huan and Ho Pham Huy Anh

The purpose of this paper is to design a novel optimized biped robot gait generator which plays an important role in helping the robot to move forward stably. Based on a…

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Abstract

Purpose

The purpose of this paper is to design a novel optimized biped robot gait generator which plays an important role in helping the robot to move forward stably. Based on a mathematical point of view, the gait design problem is investigated as a constrained optimum problem. Then the task to be solved is closely related to the evolutionary calculation technique.

Design/methodology/approach

Based on this fact, this paper proposes a new way to optimize the biped gait design for humanoid robots that allows stable stepping with preset foot-lifting magnitude. The newly proposed central force optimization (CFO) algorithm is used to optimize the biped gait parameters to help a nonlinear uncertain humanoid robot walk robustly and steadily. The efficiency of the proposed method is compared with the genetic algorithm, particle swarm optimization and improved differential evolution algorithm (modified differential evolution).

Findings

The simulated and experimental results carried out on the small-sized nonlinear uncertain humanoid robot clearly demonstrate that the novel algorithm offers an efficient and stable gait for humanoid robots with respect to accurate preset foot-lifting magnitude.

Originality/value

This paper proposes a new algorithm based on four key gait parameters that enable dynamic equilibrium in stable walking for nonlinear uncertain humanoid robots of which gait parameters are initiatively optimized with CFO algorithm.

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Article
Publication date: 26 December 2023

Thanh Tiep Le, Minh Hoa Le, Vy Nguyen Thi Tuong, Phuc Vu Nguyen Thien, Tran Tran Dac Bao, Vy Nguyen Le Phuong and Sudha Mavuri

This study aims to investigate the influence of corporate social responsibility (CSR) on corporate sustainable performance (CSP) of small- and medium-sized enterprises (SMEs) by…

839

Abstract

Purpose

This study aims to investigate the influence of corporate social responsibility (CSR) on corporate sustainable performance (CSP) of small- and medium-sized enterprises (SMEs) by looking into the significance of mediating factors, namely, brand image (BI) and brand loyalty (BL), within the context of an emerging economy.

Design/methodology/approach

The authors conduct an extensive literature study on the subjects of CSR, BI and BL to assess their influence on the sustainable performance of SMEs in an emerging market. The study adopts a quantitative methodology. A total of 438 answers were obtained from a sample size of 513. The data of the SMEs in Vietnam was analyzed using the smart partial least squares structural equation modeling software, specifically version 3.3.2.

Findings

The results of the authors demonstrate notable and favorable correlations between CSR and CSP, CSR and BI and CSR and BL. Importantly, the findings contribute to existing knowledge by looking into the mediating influence of BI and BL in the relationship between CSR and CSP.

Originality/value

According to the authors’ understanding, a number of research have investigated the correlation between CSR and CSP within the realm of SMEs. Nevertheless, there is a scarcity of scholarly research examining the mediating function of BI and BL in this association. The study’s findings have important implications for entrepreneurs and senior management in effectively guiding their enterprises and improving their business strategies with an emphasis on sustainability in emerging markets. The outcome of this study has the potential to significantly contribute to SMEs in Vietnam as well as other emerging countries.

Details

Journal of Global Responsibility, vol. 15 no. 2
Type: Research Article
ISSN: 2041-2568

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Publication date: 21 April 2010

Shari L. Dworkin

Purpose – The purpose of this chapter is to use the particulars of a single case study (Vietnam) to underscore common pitfalls that several governments have made during the…

Abstract

Purpose – The purpose of this chapter is to use the particulars of a single case study (Vietnam) to underscore common pitfalls that several governments have made during the emerging and concentrated stages in their policy responses to the HIV/AIDS epidemic and to underscore much needed actions in the HIV/AIDS prevention realm.

Methods – Literature syntheses, policy reports, interviews with in-country stakeholders, and a case study approach are used to explore key issues regarding common government missteps at the concentrated epidemic phase.

Findings – These include coverage of the history of social ills in the country and how these intersect with – first, myths about the spread of HIV within a given region; second, inadequate intervention with high-risk groups and lack of consideration of the ways in which high-risk groups interact with the general population (neglect of bridge populations); and third, poor emphasis on women and young women, who are disproportionately affected by key epidemic transitions, particularly the transition from emerging to the concentrated epidemic phase.

Contribution to the field – Documenting policy lessons in emerging and concentrated epidemics is urgent and can assist within and across nations to help control the spread of HIV/AIDS.

Details

Understanding Emerging Epidemics: Social and Political Approaches
Type: Book
ISBN: 978-1-84855-080-3

Available. Open Access. Open Access
Article
Publication date: 30 July 2024

Huong Lan Nguyen, Belle Dang, Yvonne Hong and Andy Nguyen

This study aimed to utilize Epistemic Network Analysis (ENA) for a thorough evaluation of policy documents concerning the digital transformation in Vietnam's higher education…

906

Abstract

Purpose

This study aimed to utilize Epistemic Network Analysis (ENA) for a thorough evaluation of policy documents concerning the digital transformation in Vietnam's higher education sector.

Design/methodology/approach

Adopting a quantitative ethnography approach, this research employed ENA to analyse a curated collection of 21 documents that specifically addressed higher education (HE) and digital transformation within Vietnam. The study also incorporated qualitative content analysis, utilizing the constant comparison method as outlined by Onwuegbuzie et al. (2009), for data coding. ENA facilitated the examination of connections among various policy aspects.

Findings

The study revealed a consistent overarching theme in Vietnam's digital transformation policies during and post-pandemic, focusing on key areas such as ADMINISTRATION, VISION, QUALITY, and INFRASTRUCTURE. However, a temporal shift in emphasis was observed: during the pandemic, policies were more focused on ADMINISTRATION and INFRASTRUCTURE, while post-pandemic, there was an increased emphasis on COLLAB, VISION, and TEACH_LEARN.

Originality/value

This research represents one of the initial efforts to showcase the utility and significance of ENA in analysing policy documents. It underscores ENA's potential in elucidating the complex interplay of policy elements in the context of digital transformation in higher education, particularly within a developing country setting.

Details

Journal of International Cooperation in Education, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2755-029X

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Article
Publication date: 21 August 2024

Charlotte Adjanor-Doku, Philip Opoku Mensah and Florence Yaa Akyiah Ellis

Through the lens of the Social Exchange Theory, this study investigates the role of emotional and psychological well-being in explaining the relationship between academic stress…

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Abstract

Purpose

Through the lens of the Social Exchange Theory, this study investigates the role of emotional and psychological well-being in explaining the relationship between academic stress and friendship quality.

Design/methodology/approach

Using a cross-sectional quantitative research design, the study gathered data from 298 tertiary students. Statistical analysis was conducted using Hayes Process Macro in SPSS.

Findings

Results from the study challenge conventional assumptions, indicating a positive and significant relationship between academic stress and friendship quality. In addition, the study revealed that psychological well-being partially mediates the relationship between academic stress and friendship quality, while emotional well-being fully mediates the relationship between academic stress and friendship quality.

Research limitations/implications

This study is limited to the tertiary institutions in Ghana. Future studies may consider expanding the scope to other levels of education to gain a more comprehensive perspective of the variables of the study.

Originality/value

This study presents a novel approach by examining the proposed model within the Ghanaian setting. It offers valuable perspectives on the interplay between academic stress, well-being, and friendship quality.

Details

Journal of Applied Research in Higher Education, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2050-7003

Keywords

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Article
Publication date: 16 September 2022

Hung Gia Hoang and Dung Trong Nguyen

The purpose of this study is to examine factors that affect smallholders' adoption of improved rice varieties in Vietnam.

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Abstract

Purpose

The purpose of this study is to examine factors that affect smallholders' adoption of improved rice varieties in Vietnam.

Design/methodology/approach

This study used a cross-sectional survey design. A random sample size of 257 was drawn from a total of 725 smallholders. Descriptive statistics and a binary logistic regression were used to analyse the data.

Findings

This study concludes that younger smallholders who participate in credit and training programs have a high level of education, receive government support, have both owned and rented land for growing rice and those who have a larger farm size have a greater tendency to adopt improved rice varieties. In addition, if improved rice varieties have higher productivity potential, palatability and marketability compared with the traditional ones as perceived by smallholders and seed of these rice varieties are available in local markets, then they are likely to be adopted by smallholders.

Research limitations/implications

A combination of socio-technological characteristics of smallholders should be considered when promoting smallholders' adoption of improved rice varieties and when choosing agricultural extension strategies to improve small-scale farmers' uptake of improved crop varieties in developing countries.

Originality/value

This research provides important understanding of the determinants of smallholders' adoption of improved rice varieties and highlights factors that need to be considered when designing policies to enhance the uptake of improved rice varieties in developing countries.

Details

International Journal of Social Economics, vol. 50 no. 2
Type: Research Article
ISSN: 0306-8293

Keywords

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