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Article
Publication date: 3 January 2017

Anwar ul-Haque, Waqar Asrar, Ashraf Ali Omar, Erwin Sulaeman and JS Mohamed Ali

Realistic data bank of aerodynamic and stability derivatives is still missing for hybrid buoyant aerial vehicles. Such vehicles take-off and land similar to an aircraft with their…

302

Abstract

Purpose

Realistic data bank of aerodynamic and stability derivatives is still missing for hybrid buoyant aerial vehicles. Such vehicles take-off and land similar to an aircraft with their partial weight balanced by the aerostatic lift. The purpose of this paper is to use wind tunnel testing for a better understanding of the aerodynamic and static stability behavior of such vehicles.

Design/methodology/approach

The effect of wing on the aerodynamic and static stability characteristics of a clean configuration hybrid buoyant is analyzed. The free stream velocity is 20 m/s, and ranges of angle of attack and side slip angle are from −8° to 12° and ±16°, respectively. Data are corrected to account for the effect of strut interference and zero load condition. The maximum blockage of the model with respect to the cross-section area of the test section is about 2.7 per cent.

Findings

A hybrid model manufactured by using wood and metal is an optimum solution with less number of parts. The vehicle is statically, longitudinally and directionally stable. Wings designed to fulfill the partial requirement of lift contribute significantly to counter the huge moment generated by the voluminous hull for centre of gravity location ahead of the leading edge of the wing.

Research limitations/implications

There are number of manufacturing constraints for scaling down a model of a hybrid buoyant aerial vehicle configuration. Specially, the thickness of the wing limits the testing envelop of angle of attack and free stream velocity.

Practical implications

The data presented here are a preliminary guide for further work on larger size models. The data may also be used to build and perform flight tests on small full-scale instrumented models and to obtain flight dynamics data.

Originality/value

The estimated aerodynamic and stability derivatives and slopes can be utilized in future for multidisciplinary design.

Details

Aircraft Engineering and Aerospace Technology, vol. 89 no. 1
Type: Research Article
ISSN: 1748-8842

Keywords

Available. Open Access. Open Access
Article
Publication date: 1 June 2011

Sana T. Tibi and Lorraine McLeod

442

Abstract

Details

Learning and Teaching in Higher Education: Gulf Perspectives, vol. 8 no. 1
Type: Research Article
ISSN: 2077-5504

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Article
Publication date: 1 April 1998

Muhammad Ramzan Akhtar

The Prophet Muhammad (pbuh) laid the foundations of the Islamic state in Medina in 622 A.D. The state expanded gradually during the 10‐year rule of the Prophet (pbuh). The Arabian…

229

Abstract

The Prophet Muhammad (pbuh) laid the foundations of the Islamic state in Medina in 622 A.D. The state expanded gradually during the 10‐year rule of the Prophet (pbuh). The Arabian Peninsula and Southern Palestine were conquered during that period. The state expanded enormously during the reign of Umar (RA). Many countries of the Roman and Persian empires comprising an area of more than 2.2 million were annexed. Historians have noted that this framework played a vital role in integrating these people which in turn strengthened the state.

Details

Humanomics, vol. 14 no. 4
Type: Research Article
ISSN: 0828-8666

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Article
Publication date: 3 August 2012

Omar Masood and Muhammad Ashraf

The purpose of this paper is to inspect whether bank‐specific and macro‐economic determinants influence Islamic banks' profitability in the selected countries of different regions.

5264

Abstract

Purpose

The purpose of this paper is to inspect whether bank‐specific and macro‐economic determinants influence Islamic banks' profitability in the selected countries of different regions.

Design/methodology/approach

In order to achieve the study objective and to answer the question, the balanced panel data regression model has been used. Bank level data is used and this study examines the alternative measures ROA and ROE as a bank‐specific function and macro‐economic determinants.

Findings

The study results signify that banks with larger assets size and with efficient management lead to greater return on assets.

Originality/value

The paper shows that management efficiency regarding operating expenses positively and significantly affects the banks' profitability.

Details

Qualitative Research in Financial Markets, vol. 4 no. 2/3
Type: Research Article
ISSN: 1755-4179

Keywords

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Expert briefing
Publication date: 27 September 2018

Hanif Atmar's credibility as a presidential contender.

Details

DOI: 10.1108/OXAN-DB238744

ISSN: 2633-304X

Keywords

Geographic
Topical
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Article
Publication date: 4 June 2019

Mohammad Ali Ashraf

The purpose of this paper is to examine consumer behavior toward halal food purchase in Bangladesh. Specifically, how do individual beliefs about trustworthiness of the halal food…

2235

Abstract

Purpose

The purpose of this paper is to examine consumer behavior toward halal food purchase in Bangladesh. Specifically, how do individual beliefs about trustworthiness of the halal food products affect individual intentions to purchases and actual purchasing behavior?

Design/methodology/approach

To answer this question, a theoretical framework using the theory of planned behavior (TPB) as its basis was established. Using measurement scales created to assess different aspects of trustworthiness, and perceived behavioral control and subjective norms, a survey instrument was developed to test the various relationships implied by TPB. Data were collected from the households located in the metropolitan city of Dhaka during the months of November and December 2017, and the analysis of this data helps answer questions about the different relationships of the constructs of the study.

Findings

The findings of the study revealed that four factors, namely, trustworthiness, attitude, normative structure and self-efficacy, significantly influence halal food purchasing. The results also demonstrated that trustworthiness of halal food is one of the most important variables of food marketing in Bangladesh.

Research limitations/implications

In reality, there is a serious lacking of halal food marketing particularly in Bangladesh. In this respect, this study can be a pioneer one and may have some limitations in terms of research procedures.

Practical implications

It is crucial for the halal food marketing and its management organizations to provide their products and services in Islamic way, because it is different from the conventional way of modern marketing.

Social implications

This result specifically implies that like normative structure and self-efficacy, trust in the authenticity of halal food is particularly important to influence attitude toward halal food purchase in Bangladesh.

Originality/value

This study is perhaps the first study in the context of Bangladesh food market that deals with the halal food purchase behavior of the consumers. In this regard, the findings of the study are important in Islamic marketing and halal food marketing.

Details

Journal of Islamic Marketing, vol. 10 no. 3
Type: Research Article
ISSN: 1759-0833

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Article
Publication date: 5 June 2023

Ataul Karim Patwary, Nor Rabiatul Adawiyah Nor Azam, Muhammad Umair Ashraf, Abdullah Muhamed Yusoff, Waqas Mehmood and Md Karim Rabiul

The purpose of this study is to examine the role of knowledge management practices, organisational commitment and capacity building on employee performance in the hotel industry…

847

Abstract

Purpose

The purpose of this study is to examine the role of knowledge management practices, organisational commitment and capacity building on employee performance in the hotel industry. This study also investigated the mediating role of organisational commitment and capacity building between knowledge management practices and employee performance.

Design/methodology/approach

A quantitative approach and questionnaire survey were used to collect data from hotel employees from Malaysia. Self-administered questionnaires were distributed to collect data from 291 participants, and partial least squares structural equation modelling was used to analyse the hypotheses.

Findings

The results of this study confirm that knowledge management practices positively and significantly affect knowledge-employee performance. Employees achieve this performance through the mediating influence of organisational commitment and capacity building culture.

Practical implications

This study offers several implications for Malaysian practitioners and policymakers regarding learning and knowledge management practices in the hospitality industry. The results suggest that organisations can manage knowledge assets and key processes of the organisational environment to create and use knowledge to improve sustainable employee performance through knowledge management practices.

Originality/value

This study sheds light on the knowledge management literature by examining the effect of knowledge management practices on organisational commitment, particularly in the hospitality industry in Malaysia.

Details

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

Keywords

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Book part
Publication date: 16 September 2022

Diego Norena-Chavez and Eleftherios Thalassinos

This research aimed to determine the mediating effect of entrepreneurial self-efficacy on the relationship between entrepreneurial passion and leadership styles. Two hundred…

Abstract

This research aimed to determine the mediating effect of entrepreneurial self-efficacy on the relationship between entrepreneurial passion and leadership styles. Two hundred hardware and footwear entrepreneurs from the Las Malvinas Commercial Emporium, Lima, Peru were surveyed. The partial least squares structural equation modelling (PLS-SEM) multivariate statistical technique was applied for data analysis. It was found that there is a complementary mediating effect of entrepreneurial self-efficacy in the relationship between entrepreneurial passion and leadership styles. On the other hand, it was concluded that entrepreneurial passion has a positive influence on entrepreneurial self-efficacy. Likewise, there is a positive influence of entrepreneurial self-efficacy on leadership styles, and there is a positive influence of entrepreneurial passion for leadership styles. This research contributed theoretically to the academic literature and provided empirical evidence of the relationship of the proposed variables; it proved a new predictive and explanatory structural model that can now be used in future research worldwide and generated a model of the studied variables that are useful for both academia and the business world.

Details

The New Digital Era: Other Emerging Risks and Opportunities
Type: Book
ISBN: 978-1-80382-983-8

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Article
Publication date: 27 April 2022

Fahmi Bin Adilah, Mohd Zamre Mohd Zahir, Hasani Mohd. Ali and Muhamad Sayuti Hassan

The objectives of this study are to analyse the present Malaysian law regarding money laundering, to identify advantages and disadvantages of the current anti-money laundering…

1184

Abstract

Purpose

The objectives of this study are to analyse the present Malaysian law regarding money laundering, to identify advantages and disadvantages of the current anti-money laundering law, to analyse its impact on the public sector and the private sector and to make recommendations on any improvements that should be made.

Design/methodology/approach

This study will use a qualitative method where the literature review method applies to collect primary and secondary data regarding anti-money laundering laws. Data has been collected from the various provisions of laws and text reading, such as books, articles, journals, law cases and thesis regarding anti-money laundering laws and those analysed with the content analysis method and the critical analysis method.

Findings

This study found that Malaysia has one law regarding anti-money laundering and they have control over individual and corporate entities in Malaysia.

Originality/value

This study found that Malaysia has one law regarding anti-money laundering and they have control over individual and corporate entities in Malaysia.

Details

Journal of Money Laundering Control, vol. 26 no. 4
Type: Research Article
ISSN: 1368-5201

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Article
Publication date: 15 February 2021

Liaquat Ali Lund, Zurni Omar and Ilyas Khan

The purpose of this study is to find the multiple branches of the three-dimensional flow of Cu-Al2 O3/water rotating hybrid nanofluid perfusing a porous medium over the…

183

Abstract

Purpose

The purpose of this study is to find the multiple branches of the three-dimensional flow of Cu-Al2 O3/water rotating hybrid nanofluid perfusing a porous medium over the stretching/shrinking surface. The extended model of Darcy due to Forchheimer and Brinkman has been considered to make the hybrid nanofluid model over the pores by considering the porosity and permeability effects.

Design/methodology/approach

The Tiwari and Das model with the thermophysical properties of spherical particles for efficient dynamic viscosity of the nanoparticle is used. The linear similarity transformations are applied to convert the partial differential equations into ordinary differential equations (ODEs). The system of governing ODEs is solved by using the three-stage Lobatto IIIa scheme in MATLAB for evolving parameters.

Findings

The system of governing ODEs produces dual branches. A unique stable branch is identified with help of stability analysis. The reduced heat transfer rate has been shown to increase with the reduced ϕ2 in both branches. Further, results revealed that the presence of multiple branches depends on the ranges of porosity, suction and stretching/shrinking parameters for the particular value of the rotating parameter.

Originality/value

Dual branches of the three-dimensional flow of Cu-Al2 O3/water rotating hybrid nanofluid have been found. Therefore, stability analysis of the branches is also conducted to know which branch is appropriate for the practical applications. To the best of the authors’ knowledge, this research is novel and there is no previously published work relevant to the present study.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 31 no. 12
Type: Research Article
ISSN: 0961-5539

Keywords

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