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Article
Publication date: 5 August 2019

Amer Al-Omari, Amjad Al-Nasser and Enrico Ciavolino

Lifetime data are used in many different applied sciences, like biomedicine, engineering, insurance and finance and others. The purpose of this paper is to develop a new…

Abstract

Purpose

Lifetime data are used in many different applied sciences, like biomedicine, engineering, insurance and finance and others. The purpose of this paper is to develop a new acceptance sampling plans for Rama distribution when the mean lifetime test is truncated at a pre-determined time. The minimum sample sizes required to assert the specified life mean is obtained for a given customer’s risk. The operating characteristic function values of the sampling plans and producer’s risk are calculated.

Design/methodology/approach

The results are illustrated using numerical examples and a real data set is considered to illustrate the performance of the suggested acceptance sampling plans and how it can be used for the industry applications.

Findings

This paper shows a new acceptance sampling plans based on Rama distribution in the particular case when the mean life time test is truncated.

Originality/value

The results calculated in this paper demonstrate the differences between OC values for different distributions taken into account. In particular, OC values of Rama distribution are found to be less than the proposed distribution counterparts.

Details

International Journal of Quality & Reliability Management, vol. 36 no. 7
Type: Research Article
ISSN: 0265-671X

Keywords

Article
Publication date: 9 May 2016

Mohamed Behery and Amjad Al-Nasser

The purpose of this study is to analytically extend the understanding of leadership styles and organisational coaching and their influence on organisational outcomes and…

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Abstract

Purpose

The purpose of this study is to analytically extend the understanding of leadership styles and organisational coaching and their influence on organisational outcomes and workplace counterproductive behaviours within a non-Western context, i.e. the United Arab Emirates (UAE).

Design/methodology/approach

In this study, a sample size of 656 participants from 14 different business sectors in the Emirates was used. The meta-analysis concept of latent variables and non-linear principal components analysis, along with the corresponding methodology of structural equation modelling, were implemented.

Findings

The study finds that organisational coaching has a significant positive effect on transactional leadership and has a significant influence on job alienation. Interestingly, coaching has a significant effect on commitment and counterproductive workplace behaviours. The detailed data analysis using F tests and independent t-tests, when applicable, indicated that there was a tendency for older employees to have more favourable attitudes towards transformational leadership or commitment but not towards coaching.

Originality/value

Despite the popularity of the presented topic in today's organisations, research in a Middle East context has not kept pace with its counterpart in Western areas of the world. The present study attempts to bridge the gap between Western theories in developed countries and under-researched Eastern countries, namely, the UAE, and to test the impact of leadership styles and organisational coaching and their influence on employee commitment and trust mediated by job bullying and job alienation.

Details

International Journal of Organizational Analysis, vol. 24 no. 2
Type: Research Article
ISSN: 1934-8835

Keywords

Article
Publication date: 21 June 2011

Amjad D. Al‐Nasser and Abdel Rahim Y. Al‐Atrash

The purpose of this paper is to provide a robust statistical procedure for evaluating and measuring the relative efficiency of multiple decision‐making units. This robust…

Abstract

Purpose

The purpose of this paper is to provide a robust statistical procedure for evaluating and measuring the relative efficiency of multiple decision‐making units. This robust approach is based on the generalized maximum entropy principle.

Design/methodology/approach

Information‐theoretic estimation approach is employed in this paper and a comparison is made with the classical relative efficiency (CCR) by using a non‐parametric bootstrap simulation. A real data application on the research performance of faculty members at Yarmouk University is presented.

Findings

Results indicate that the relative efficiency based on the generalized maximum entropy estimation approach is more accurate, costs less and is more efficient than the CCR relative efficiency.

Research limitations/implications

Owing to use of Shannon's entropy formulation, it is still critical whether the results also hold with cross entropy or a higher order entropy formulation for modeling additive, multiplicative or partial relative efficiency.

Originality/value

A super data envelopment analysis has been introduced for finding superior decision‐making units (DMU) by solving only one nonlinear programming system, which could be considered as a flexible tool for modeling multiple input‐output DMU.

Details

Asian Journal on Quality, vol. 12 no. 1
Type: Research Article
ISSN: 1598-2688

Keywords

Article
Publication date: 13 July 2015

Amjad Al-Nasser and Mohamed Behery

The purpose of this study is to establish both the validity of Western theories within the Middle East, namely, the United Arab Emirates (UAE), and to further improve and…

1062

Abstract

Purpose

The purpose of this study is to establish both the validity of Western theories within the Middle East, namely, the United Arab Emirates (UAE), and to further improve and extend our understanding of the effect of organisational coaching on counterproductive behaviours, such as bullying and alienation.

Design/methodology/approach

A sample size of 656 participants from 29 organisations and 14 different industries was employed. A research model was proposed, refined and tested through a quantitative paradigm using one dimension nonlinear principal components analysis, linear structural equation modelling (SEM) and MANOVA.

Findings

The correlation analysis results show non-significant negative correlations between coaching and all of the organisational counterproductive behaviour dimensions but not certainty. It was found that a significant weak relationship exists between most of the mediator dimensions, while a strong relationship exists between job alienation and workplace bullying. Results of the linear SEM provide support that coaching is related to certainty. Furthermore, the results reveal that certainty mediates a significant link between coaching and organisational counterproductive work behaviours (job alienation and bullying).

Originality/value

The study is considered the first in the UAE to investigate organisational counterproductive work behaviours (bullying and job alienation). The main contribution of this study is to quantify the relationship between organisational coaching and bullying and job alienation mediated by organisational climate dimensions.

Details

International Journal of Organizational Analysis, vol. 23 no. 3
Type: Research Article
ISSN: 1934-8835

Keywords

Article
Publication date: 14 February 2022

Bushra K. Mahadin, Amjad Abu Elsamen and Mohammed Ismail El-Adly

This study aims to examine the roles of advertising (ADV) and sales promotion (SP) in creating airline brand equity (BE) in the UAE, and to test the mediational effect of…

Abstract

Purpose

This study aims to examine the roles of advertising (ADV) and sales promotion (SP) in creating airline brand equity (BE) in the UAE, and to test the mediational effect of customer perceived value on the proposed relationships. Additionally, the study examines the outcomes of airline BE (i.e. trust, satisfaction and loyalty).

Design/methodology/approach

A structured and self-administered survey was used targeting 234 passengers, from which 197 were valid for the analysis. Exploratory and confirmatory factor analyses were used to assess the research constructs unidimensionality, validity and composite reliability.

Findings

The empirical findings support the direct relationship between ADV and BE. Perceived value fully mediates the effect of SP on BE. In addition, BE positively affects trust, satisfaction and loyalty.

Research limitations/implications

Future research could investigate BE and perceived value as multidimensional constructs. Additionally, future research should expand the effect of other variables such as airline type, airline class and other marketing mix elements.

Practical implications

The findings from this research highlight the importance of both ADV and sale promotion in enhancing airline BE, and the pivotal role of perceived value.

Originality/value

The originality of this research is highlighted in conceptualizing a parsimonious model of the preceding constructs (i.e. ADV, SP, customer perceived quality) and subsequent constructs of BE (i.e. customer trust, customer satisfaction, customer loyalty), which has never been investigated collectively in one model in the literature particularly in the airline’ context of emerging economies such as UAE.

Details

International Journal of Organizational Analysis, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1934-8835

Keywords

Article
Publication date: 22 July 2019

Sin-Yu Ho and Nicholas M. Odhiambo

The purpose of this paper is to examine the macroeconomic drivers of stock market development in Hong Kong during the period 1992Q4-2016Q3. Specifically, it investigates…

Abstract

Purpose

The purpose of this paper is to examine the macroeconomic drivers of stock market development in Hong Kong during the period 1992Q4-2016Q3. Specifically, it investigates the impact of banking sector development, economic growth, inflation rate, exchange rate, trade openness and stock market liquidity on stock market development.

Design/methodology/approach

This paper uses quarterly time-series data covering the period 1992Q4-2016Q3, which have been obtained from various reliable sources. The study uses the autoregressive distributed lag bounds testing procedure to identify both the long- and short-run macroeconomic drivers of stock market development in Hong Kong.

Findings

We find that banking sector development and economic growth have positive impacts on stock market development, whereas the inflation rate and the exchange rate have negative impacts on stock market development both in the long and short run. In addition, the results show that trade openness has a positive long-run impact but a negative short-run impact on stock market development.

Originality/value

Despite the phenomenal growth of stock market in Hong Kong, there are, to the best of the authors’ knowledge, no relevant studies on the macroeconomic drivers of stock market development in Hong Kong. Therefore, this paper endeavours to enrich the literature by examining the macroeconomic drivers of stock market development in Hong Kong during the period 1992Q4-2016Q3.

Article
Publication date: 6 March 2017

Sin-Yu Ho and Bernard Njindan Iyke

This paper aims to provide a comprehensive review of the literature on the determinants of stock market development.

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Abstract

Purpose

This paper aims to provide a comprehensive review of the literature on the determinants of stock market development.

Design/methodology/approach

The paper divides the existing studies into the theoretical and empirical literature. Then, it analyses these studies in turn.

Findings

Based on the theoretical literature, the determinants of stock market development can be broadly classified into two groups: macroeconomic factors and institutional factors. The theory and the empirics predict different ways in which macroeconomic factors affect stock market development. The real income and its growth rate foster stock market development, while the banking sector, interest rate and private capital flows can foster or inhibit it. Inflation and exchange rates have adverse effects on stock market development. In terms of the institutional factors, the literature indicates that different legal origins and stock market integration can have a positive or negative impact on stock market development. In addition, factors such as legal protection of investors, corporate governance, financial liberalisation and trade openness contribute positively to the development of the stock market.

Research limitations/implications

From the survey, it is imperative that policies which aim at enhancing institutional quality, financial integration, real income growth, macroeconomic stability and capital inflows, among others, will certainly promote stock market development within and across countries. Although the empirical studies have incorporated a large set of variables in their models, the theoretical studies do not contain rich models of stock market development. It is understandable that a theoretical model which contains a large set of the determinants of stock market development may be difficult to solve. However, such a model seems very appealing and will provide a unification of the existing literature.

Originality/value

The originality of the paper lies in the fact that it is the first to undertake a survey of the determinants of stock market development in the literature. It is hoped that this paper will spur further theoretical and empirical research on the determinants of stock market development.

Details

Studies in Economics and Finance, vol. 34 no. 1
Type: Research Article
ISSN: 1086-7376

Keywords

Article
Publication date: 10 December 2018

Sin-Yu Ho

The purpose of this paper is to examine the macroeconomic determinants of stock market development in South Africa during the period 1975–2015. Specifically, it examines…

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Abstract

Purpose

The purpose of this paper is to examine the macroeconomic determinants of stock market development in South Africa during the period 1975–2015. Specifically, it examines the impact of banking sector development, economic growth, inflation rate, real interest rate and trade openness on the development of the South African stock market.

Design/methodology/approach

The author employs autoregressive distributed lag bounds testing procedure that allows the author to empirically investigate both the short- and long-run relationships between the stock market development and its determinants in the context of South Africa. In addition, the author also conducts a sensitivity analysis by accounting for the presence of structural breaks in the underlying series to check for the robustness of the estimation.

Findings

This paper confirms the findings by other studies that banking sector development and economic growth promote stock market development, while inflation rate and real interest rate inhibit stock market development. In addition, this paper finds an interesting result in the fact that trade openness has a negative impact on stock market development, which is different from the findings of many other studies.

Originality/value

Currently, while the theoretical and empirical literature presents diverse views on the relationship between each determinant and stock market development, no study has focussed on the South African stock market. Given the significant role that the South African stock market plays in Africa as measured by its market capitalisation and market capitalisation ratio, there is a need for a better understanding of the macroeconomic factors influencing its development.

Details

International Journal of Emerging Markets, vol. 14 no. 2
Type: Research Article
ISSN: 1746-8809

Keywords

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