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Article
Publication date: 5 October 2015

Zuliana Ismail, Renuganth Varatharajoo, Ramly Ajir and Azmin Shakrine Mohd Rafie

– This paper aims to describe a design enhancement for the satellite attitude control system using reaction wheels, and the wheel momentum unloading using magnetorquers.

423

Abstract

Purpose

This paper aims to describe a design enhancement for the satellite attitude control system using reaction wheels, and the wheel momentum unloading using magnetorquers.

Design/methodology/approach

The proportional – integral–derivative-controller and active force control (AFC) schemes are developed together with their governing equations for closed loop system of attitude control. Four numerical simulations were carried out using the Matlab – Simulink™ software and results were compared.

Findings

From the results, it is evident that the attitude accuracies for roll–pitch–yaw axes have improved significantly through the proportional – derivative (PD) – AFC controller for the attitude control and the wheel momentum can be well maintained during the momentum unloading scheme. The results show that the AFC has a high potential to be implemented in the satellite attitude control system.

Practical implications

Using AFC, the actual disturbance torque is considered totally rejected by the system without having to have any direct prior knowledge on the actual disturbance itself.

Originality/value

The results demonstrate the satellite attitude control using reaction wheel is enhanced by PD–AFC attitude controller.

Details

Aircraft Engineering and Aerospace Technology: An International Journal, vol. 87 no. 6
Type: Research Article
ISSN: 0002-2667

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Article
Publication date: 30 October 2023

Zuliana Mohd Zabidi, Zuraidah Abdullah and Bambang Sumintono

The purpose of this study is to explore mathematics teachers' collaboration within their professional learning communities (PLCs), and to gain insight into how the teachers…

201

Abstract

Purpose

The purpose of this study is to explore mathematics teachers' collaboration within their professional learning communities (PLCs), and to gain insight into how the teachers developed their collective efficacy through it to focus on improving student learning.

Design/methodology/approach

Using a qualitative approach, data were collected from three high-performing secondary schools, mainly through semi-structured in-depth interviews with the Heads of Mathematics Unit. For explication and triangulation purposes, focus group interviews with the mathematics teachers and students and document analysis were also conducted.

Findings

The findings indicate that PLCs were the vessel through which a culture of disciplined teacher collaboration was fostered. More importantly, this culture encouraged teachers to participate in reflective dialogues that became a driver for their learning, and eventually led to their changed professional practice for improved student learning. The collaborative setting within the PLCs allowed teachers to pool their resources, knowledge and individual expertise to identify their student learning focus, and administer and measure their student intervention strategies. This collaborative professional learning reduced professional isolation, and as a result, improved teachers' collective pursuit of professional growth to impact student outcomes.

Research limitations/implications

The aim of this qualitative study was to provide a detailed description of the teachers' collaboration within their PLCs based on the researchers' interpretation of how the participants make sense of their PLC practices and experiences. Hence, findings are indicative, and not definitive. In addition, the Heads of the Mathematics Unit, and the mathematics teacher participants in this study illustrated salient aspects of subject subcultures, where their beliefs, norms and practices were non-generic, or specific only to their subject context. Therefore, the implications to practice were built from commonalities shared only among the mathematics units.

Originality/value

This is a study in a Malaysian context that provides empirical evidences that are concerned primarily with the process of teachers developing their collective efficacy through disciplined collaboration within their PLCs.

Details

Journal of Professional Capital and Community, vol. 8 no. 4
Type: Research Article
ISSN: 2056-9548

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Article
Publication date: 20 September 2023

Ilyas Masudin, Putri Elma Zuliana, Dana Marsetiya Utama and Dian Palupi Restuputri

The purpose of this study is to identify the risks that exist in halal meat supply chain activities and to carry out a risk assessment using the fuzzy best-worst method (FBWM…

314

Abstract

Purpose

The purpose of this study is to identify the risks that exist in halal meat supply chain activities and to carry out a risk assessment using the fuzzy best-worst method (FBWM) along with mitigating risks using the risk mitigation number (RMN).

Design/methodology/approach

The method used is to collect several literature reviews related to the halal meat supply chain, which has information relevant to the risks of the meat industry in Indonesia. Then, a focus group discussion was held with several experts who play a role in the meat industry in Indonesia, and 33 identified risks were identified in halal meat supply chain activities. The proposed methodology uses FBWM and RMN in conducting risk assessment and mitigation in the meat industry in Indonesia.

Findings

The analysis reveals that priority risk is obtained by using the global weight value on the FBWM, and then risk mitigation is carried out with RMN. Priority mitigation strategies can mitigate some of the risks to the meat industry in Indonesia. The proposed mitigation strategy is designed to be more effective and efficient in preventing risks that can interfere with product halalness in halal meat supply chain activities in the Indonesian meat industry.

Research limitations/implications

The implications of this study highlight the need for collaboration among stakeholders, improved risk assessment methodologies and the expansion of research into other halal supply chains. By addressing these implications, the halal industry can enhance its integrity, consumer confidence and overall contribution to the global market.

Originality/value

This research provides an integrated approach to identifying, analyzing, assessing and mitigating risks to the meat industry in Indonesia.

Details

Journal of Islamic Marketing, vol. 15 no. 3
Type: Research Article
ISSN: 1759-0833

Keywords

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Article
Publication date: 16 February 2024

Dina Hanifasari, Ilyas Masudin, Fien Zulfikarijah, Aniek Rumijati and Dian Palupi Restuputri

This paper aims to investigate the impact of halal awareness on the relationship between halal supply chain knowledge and purchase intention for halal meat products in the…

1363

Abstract

Purpose

This paper aims to investigate the impact of halal awareness on the relationship between halal supply chain knowledge and purchase intention for halal meat products in the millennial generation.

Design/methodology/approach

The quantitative approach with the respondents of 177 millennial generations in Indonesia is selected to understand the relationships between variables. Structural equation model-partial least square is used to analyze the relationship between variables.

Findings

The findings of this study found that the purchase intention of halal products in the millennial generation is influenced by several factors such as halal supply chain knowledge, halal certification and logo and religious beliefs. However, the results of this study also show that concern for halal products failed to moderate the relationship between these three main variables on the purchase intention of halal products.

Originality/value

This study provides insights into the concern that strengthens the relationship between the main variables on the intention to purchase halal meat products for the millennial generation.

Details

Journal of Islamic Marketing, vol. 15 no. 7
Type: Research Article
ISSN: 1759-0833

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Article
Publication date: 25 June 2024

Mohamad Reeduan Mustapha, Farhana Ahamad, Noor Yuslida Hazahari and Nurhusna Samsudin

Systematic reviews have contributed substantially to the development of knowledge in various academic fields and have helped discover new research potentials in a systematic…

283

Abstract

Purpose

Systematic reviews have contributed substantially to the development of knowledge in various academic fields and have helped discover new research potentials in a systematic manner. Specifically, this study aims to conduct a systematic bibliometric review to address ethical issues across the halal food supply chain (HFSC), as well as to identify the ethical challenges that food handlers face in ensuring authenticity, compliance with Shariah law and avoidance of contamination with non-halal ingredients in halal food products.

Design/methodology/approach

A bibliometric approach was used to analyse 263 publications from the Scopus database. The present research analysed the documents’ bibliographical data based on publication year, source title, country of origin, institution, authorship, keywords and citation count. The VOSviewer software was applied to perform citation and co-word analysis, as well as to construct bibliometric networks centred on the topic of ethical issues in the HFSC. This bibliometric review provides valuable insights for researchers to identify key publications and comprehend the foundational structure of the subject matter. It also helps guide future research into significant trends and new areas of study.

Findings

Citation analysis provides valuable insights into influential publications and the interconnectedness of research on HFSC. A co-word analysis revealed that discussions on ethics and integrity in the HFSC primarily revolved around the concept of halal and its implications, particularly in supply chain management. However, the limited frequency and prominence of these keywords suggests a scarcity of academic discourse on ethical matters in this field. Moreover, ethical considerations not only serve as a critical aspect of ensuring halal integrity but also emerge as a strategic imperative in marketing, brand management and the operation of global businesses.

Originality/value

This study addresses the need to examine the knowledge gap in the literature on ethical practices and issues in HFSC. Although there is a significant amount of academic writing in the halal context, there is a scarcity of research that specifically focuses on the ethical aspects of HFSC. This study also offers a framework for investigating the ethical practices and issues in HFSC.

Details

Journal of Islamic Marketing, vol. 15 no. 12
Type: Research Article
ISSN: 1759-0833

Keywords

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