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Article
Publication date: 15 June 2021

Mohd Badrul Salleh, Nurulasikin Mohd Suhadis and Renuganth Varatharajoo

This paper aims to investigate the attitude control pointing improvement for a small satellite with control moment gyroscopes (CMGs) using the active force control (AFC) method.

Abstract

Purpose

This paper aims to investigate the attitude control pointing improvement for a small satellite with control moment gyroscopes (CMGs) using the active force control (AFC) method.

Design/methodology/approach

The AFC method is developed with its governing equations and integrated into the conventional proportional-derivative (PD) controller of a closed-loop satellite attitude control system. Two numerical simulations of an identical attitude control mission namely the PD controller and the PD+AFC controller were carried out using the MATLAB®-SimulinkTM software and their attitude control performances were demonstrated accordingly.

Findings

Having the PD+AFC controller, the attitude maneuver can be completed within the desired slew rate, which is about 2.14 degree/s and the attitude pointing accuracies for the roll, pitch and yaw angles have improved significantly by more than 85% in comparison with the PD controller alone. Moreover, the implementation of the AFC into the conventional PD controller does not cause significant difference on the physical structure of the four single gimbal CMGs (4-SGCMGs).

Practical implications

To achieve a precise attitude pointing mission, the AFC method can be applied directly to the existing conventional PD attitude control system of a CMG-based satellite. In this case, the AFC is indeed the backbone for the satellite attitude performance improvement.

Originality/value

The present study demonstrates that the attitude pointing of a small satellite with CMGs is improved through the implementation of the AFC scheme into the PD controller.

Details

Aircraft Engineering and Aerospace Technology, vol. 93 no. 7
Type: Research Article
ISSN: 1748-8842

Keywords

Article
Publication date: 17 July 2020

Zaimy Johana Johan, Mohd Zainee Hussain, Rohani Mohd and Badrul Hisham Kamaruddin

The purpose of this paper is to examine the relationship between attitude, subjective norm, perceived behavioural control, religiosity, knowledge and Shariah-compliance with…

1845

Abstract

Purpose

The purpose of this paper is to examine the relationship between attitude, subjective norm, perceived behavioural control, religiosity, knowledge and Shariah-compliance with intention to hold Shariah-compliant credit card (SCCC) amongst Muslims and non-Muslims.

Design/methodology/approach

Researchers used survey questionnaire to collect data and applied a purposive sampling method, then analyzing the data using descriptive statistics and also multi-group analysis of SmartPLS.

Findings

For Muslims, attitude, subjective norm, Shariah-compliance, knowledge and religiosity are positively significant. While for non-Muslims, only attitude and subjective norm are positively significant to intention to hold SCCCs.

Research limitations/implications

The behavioural study only focusses on intention to hold Islamic credit cards, which is constraining the extended model of the theory of planned behaviour (TPB) without the actual performance of the behaviour, which is holding SCCCs. Secondly, the research caters for a single method, namely, quantitative without including the qualitative method to better understand and explore other factors affecting consumers’ behavioural intention. The qualitative part can be carried out by conducting interviews with practitioners, regulators and customers. Thirdly, the cultural dimensions are not combined as parts of TPBs’ antecedents for extended model that could be affecting intention, as Malaysia has diverse ethnic groups with different religious background.

Practical implications

In terms of managerial implications, the findings will further assist financial service providers to develop more effective marketing strategies for Islamic financial products not just to cater for the Muslims but also the non-Muslims, who are increasingly attracted to Islamic banking. As many Muslims are still holding conventional credit cards, it is timely for the Islamic financial institutions to attract them with the SCCCs.

Social implications

Financial marketers are expected to be qualified and well-versed on the different Islamic product structures and also the conventional products. By having such enables them to enlighten and create awareness amongst the targeted consumers in seeking Shariah-compliant financial-related products.

Originality/value

The research will contribute to new theoretical knowledge of an extended behavioural model in relation to customers’ perception towards SCCCs’ acceptance.

Details

Journal of Islamic Marketing, vol. 12 no. 9
Type: Research Article
ISSN: 1759-0833

Keywords

Case study
Publication date: 27 February 2021

Sue Chern Ooi, Siti Seri Delima Abdul Malak and Ayoib Che Ahmad

The main objectives of this case are to provide an opportunity for case users to understand the organisational governance framework in a farmers' association and how to build an…

Abstract

Learning outcomes

The main objectives of this case are to provide an opportunity for case users to understand the organisational governance framework in a farmers' association and how to build an effective organisational board. More specifically, the teaching objectives of this case are as follows: to provide an overview of the functions of different types of governance structures in a farmers' association. To understand the importance of good governance practices in a farmers' association and for its stakeholders. To relate democratic theory, stakeholder theory, agency theory and stewardship theory with the governance practices of a farmers' association. To critically evaluate the board governance in a farmers' association and recommend measures to enhance the practices.

Case overview/synopsis

The teaching case presents the governance practices in a farmers' association in Malaysia, ZIX-PPK and the various governance challenges that emerged in the PPK subsequent to the appointment of politically affiliated directors. Prior to 2019, ZIX-PPK was an outstanding PPK under the helm of the General Manager, Khadijah. The PPK had continually been recognised as an exceptional and excellent PPK by the Farmers' Organisation Authority and the Muda Agricultural Development Authority. However, the Arahan Pendaftar Bil 1/2019 required changes to the governance structures of ZIX-PPK, with five new directors being appointed by the minister. The appointment threatened the independence and autonomy of ZIX-PPK and affected the dynamic of the board of directors. Khadijah had to search for measures that could improve the board governance in ZIX-PPK. The names, in this case, had been altered but the details were based on an actual event. The data were collected through interviews with key players and with reference to the minutes and other documentation of ZIX-PPK.

Complexity academic level

The teaching case can be used by students in higher education institutions at both undergraduate and postgraduate levels. The case may also be relevant for training purposes to farmers' associations and any non-profit organisations.

Subject code

CSS 1: Accounting and Finance.

Supplementary materials

Teaching notes are available for educators only.

Details

Emerald Emerging Markets Case Studies, vol. 11 no. 1
Type: Case Study
ISSN: 2045-0621

Keywords

Article
Publication date: 1 February 2021

Helmi A. Boshnak

This paper aims to examine firm characteristics and ownership structure determinants of corporate social and environmental voluntary disclosure (CSEVD) practices in Saudi Arabia…

1220

Abstract

Purpose

This paper aims to examine firm characteristics and ownership structure determinants of corporate social and environmental voluntary disclosure (CSEVD) practices in Saudi Arabia to address the paucity of research in this field for Saudi listed firms.

Design/methodology/approach

The paper uses manual content and regression analyses for online annual report data for Saudi non-financial listed firms over the period 2016–2018 using CSEVD items drawing on global reporting initiative-G4 guidelines.

Findings

Models show that Saudi firm CSEVD has increased over time compared to previous studies to an average of 68% disclosure due to new corporate governance regulations and IFRS implementation. The models show that firm size, leverage, manufacturing industry type and government ownership are positive determinants of CSEVD, while family ownership is the negative driver of CSEVD. However, firm profitability, audit firm size, firm age and institutional ownership have no impact on the level of CSEVD.

Originality/value

Using legitimacy and stakeholder theories, the paper determines the influence of firm characteristics and ownership structure on CSEVD, identifying implications for firm stakeholders and providing some evidence on the impact of corporate governance regulation and IFRS implementation on such disclosure. The paper provides additional evidence on progress towards Saudi’s Vision 2030.

Details

Journal of Financial Reporting and Accounting, vol. 20 no. 3/4
Type: Research Article
ISSN: 1985-2517

Keywords

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