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Article
Publication date: 4 November 2020

Mahmoud Alsaid, Rania M. Kamal and Mahmoud M. Rashwan

This paper presents economic and economic–statistical designs of the adaptive exponentially weighted moving average (AEWMA) control chart for monitoring the process mean. It also…

1203

Abstract

Purpose

This paper presents economic and economic–statistical designs of the adaptive exponentially weighted moving average (AEWMA) control chart for monitoring the process mean. It also aims to compare the effect of estimated process parameters on the economic performance of three charts, which are Shewhart, exponentially weighted moving average and AEWMA control charts with economic–statistical design.

Design/methodology/approach

The optimal parameters of the control charts are obtained by applying the Lorenzen and Vance’s (1986) cost function. Comparisons between the economic–statistical and economic designs of the AEWMA control chart in terms of expected cost and statistical measures are performed. Also, comparisons are made between the economic performance of the three competing charts in terms of the average expected cost and standard deviation of expected cost.

Findings

This paper concludes that taking into account the economic factors and statistical properties in designing the AEWMA control chart leads to a slight increase in cost but in return the improvement in the statistical performance is substantial. In addition, under the estimated parameters case, the comparisons reveal that from the economic point of view the AEWMA chart is the most efficient chart when detecting shifts of different sizes.

Originality/value

The importance of the study stems from designing the AEWMA chart from both economic and statistical points of view because it has not been tackled before. In addition, this paper contributes to the literature by studying the effect of the estimated parameters on the performance of control charts with economic–statistical design.

Details

Review of Economics and Political Science, vol. 6 no. 2
Type: Research Article
ISSN: 2356-9980

Keywords

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Article
Publication date: 29 January 2020

Ben Ltaifa Monia

This study aims to explore empirically the determinants of stock return in a comparative context between Islamic and conventional banks.

352

Abstract

Purpose

This study aims to explore empirically the determinants of stock return in a comparative context between Islamic and conventional banks.

Design/methodology/approach

The analysis of the determinants of stock returns is carried out through a panel data model. This study covers 14 Islamic banks and 30 conventional banks in the MENA countries (Bahrain, Egypt, Kuwait, Malaysia, Qatar, Saudi Arabia and United Arab Emirates) during 10 years, from 2004 to 2014.

Findings

The empirical results show that the market risk has a positive impact on market profitability of banks except for the small-medium (SM) and big-high (BH) portfolio for the capital asset pricing model and Fama and French models. The risk associated with the size (Small [market capitalization] Minus Big: SMB) has a positive impact on small banks and a negative impact on banks of big sizes. Finally, the risk related to the market value (High [book-to-market ratio] Minus Low: HML) has a positive impact on both small and large banks.

Originality/value

The answer to the question of explanatory factors for stock market returns allows managers to measure the cost of capital and thus choose the most appropriate form of financing and therefore evaluate the possibility of investing in a particular bank.

Details

Journal of Islamic Accounting and Business Research, vol. 11 no. 3
Type: Research Article
ISSN: 1759-0817

Keywords

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Article
Publication date: 14 June 2022

Achraf Haddad

The purpose of this research is to compare the board quality's (BQ) impacts on the financial performance (FP) of conventional and Islamic banks (IBs) after the Subprime financial…

733

Abstract

Purpose

The purpose of this research is to compare the board quality's (BQ) impacts on the financial performance (FP) of conventional and Islamic banks (IBs) after the Subprime financial crisis. The main reason is to help financial stakeholders choose the best performing and most appropriate bank type with its engagement based on the BQ index.

Design/methodology/approach

Based on the existing gap in previous researches and by using the GLS method (Generalized Least Squares method), the author compared the BQ's impacts on the FP of conventional and IBs. Settings of the FP and BQ were collected from 30 countries located on 4 continents. Two equal samples were tested; each of them is composed of 112 banks. The author concentrated only on the banks that have published regularly the banks' annual reports over the period 2010–2018.

Findings

Cylindrical panel results revealed that in conventional banks (CBs), the BQ has negatively affected banks' FP, while in IBs the BQ's impacts on the banks’' FP is ambiguous. Nevertheless, the positive impacts are more significant on the IBs' FP than the negative impacts on the IBs' FP.

Practical implications

The main practical contribution is the identification and distinction between the impacts of board determinants' quality on the shareholders' profits in the case of conventional and IBs. Hence, conventional or IBs which have a bad BQ will generate less FP and will be classified as a lender of bankruptcy danger for the bank customer. Besides, whatever the bank type, in a financial stable period, good BQ positively influences FP and provides a good impression to stakeholders. Otherwise, FP indicates that the banks suffer from the weaknesses of the board quality determinants.

Originality/value

Returning to the finance and banking governance literature, the author's article provides the first conditional and demonstrative analysis that detailed a logical comparative process to analyze the correlation between the board determinants' quality and the financial performance of conventional and IBs. However, previous research has always discussed the main role of the board as an internal governance mechanism on the FP separately in each bank type.

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Article
Publication date: 1 July 1995

Manal Al‐Qaisi and S. Nazim Ali

Describes how access to English‐language information bynon‐English‐speaking students and faculty at a Middle Eastern universityis being facilitated by making available a variety…

336

Abstract

Describes how access to English‐language information by non‐English‐speaking students and faculty at a Middle Eastern university is being facilitated by making available a variety of machine‐readable sources, particularly CD‐ROM, and how not only searching of these sources but also use of the information retrieved are made possible by several means including: the provision by faculty and library staff of translations into English of information requests made in Arabic; the publication of bilingual dictionaries covering a wide range of scientific, technological and other disciplines; and the recent development, by other institutions, of a number of online, multilingual databases covering computer terms and a wide range of science and technology fields, accessible via Gulfnet and the Internet. Anticipates the development of an all‐sources database accessible through all public search‐and‐retrieval terminals.

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