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This paper attempts to deal with the presentation of a numerical investigation of the laminar‐free convective heat transfer in a square enclosure containing a solid cylinder located at an arbitrary position. Effects of the cylinder position on the heat transfer and the flow structures inside the cavity are to be studied and highlighted.

The numerical code is based on the hybrid scheme with the lattice Boltzmann and the alternating‐directional implicit (ADI) splitting scheme. The energy equation is solved by ADI scheme and the flow field velocities have been computed using the lattice Boltzmann method (LBM). The bounce‐back condition combined with quadratic interpolation is used at solid boundaries.

The predicted results show that the cylinder location has a significant effect on the heat transfer. It is observed that: when the inner body does not generate heat, most of the heat transfer takes place if the body is located at the center of the enclosure. When the cylinder generates heat and is displaced from the left towards the right and from the lower part towards the upper part of the cavity, the heat transfer rate decreases on the hot wall and increases on the cold wall.

The fluid flow (air) is assumed to be incompressible, laminar and 2D. The viscous heat dissipation is neglected in the energy equation and all physical proprieties are constant except for the density, whose variation with temperature is allowed for in the buoyancy term.

Natural convection in heated enclosures, housing inner bodies has received significant attention because of its interest and importance in industrial applications. Some applications are solar collectors, fire research, electronic cooling, aeronautics, chemical apparatus, building constructions, nuclear engineering, etc.

The paper contributes to the development of the LBM. In particular, it was found that the inherent numerical instabilities of this LBE are not modified by coupling with temperature. This is a good improvement compared to what is observed in the simulations of thermal systems using the full LBE formulation where the energy conservation is taken into account.

The purpose of this paper is to provide a critical appraisal of the theme of zulm (injustice/exploitation) in light of the Islamic finance literature and the general attitude and approach of the Islamic finance industry and its advocates.

Based on an expanding theoretical and empirical knowledge base about Islamic finance and banking movement, and the emerging understanding about the role of profit and corporate behavior, a critical analysis of the role of riba, interest and profit in widespread injustice and exploitation is presented.

On the basis of the behavior of the Islamic finance industry, it seems that the industry's current practices are either neutral to the issue of injustice/exploitation or mirrors the tendencies of the conventional finance. Furthermore, when comparing the exploitative role of interest and profit, the latter seems to be more consequential than generally understood and acknowledged.

Islamic economics/finance literature should have more empirical research in identifying and understanding the nature of exploitation in the contemporary world and in how the current practices or tendencies are minimizing or abetting the challenge of exploitation.

The larger goal of the Islamic finance and banking movement should be to be in harmony with the maqasid of Islam to minimize zulm (injustice/exploitation) in the society.

The larger goal of the Islamic finance and banking movement should be to be in harmony with the maqasid of Islam to minimize zulm (injustice/exploitation) in the society.

While the literature of Islamic economics and finance is rather robust, this might be the first work that critically examines the riba‐interest reductionism, especially to focus on its implication for attention of the industry being away from exploitation in general and the relationship between profit and exploitation in particular.

This paper aims to conceptualize a framework drawn upon the self-regulation theory to study the effect of system quality features on the continuous usage intention of social network users. The study explores the relationship among the selected variables and identifies the determinants of continuous usage intention of social networks.

A survey method was used to collect data from 301 male and 311 female social network users to test the research model with the help of the structural equation modelling technique.

The results show a difference between male and female social media users for the continuous usage intention of social networks. A substantial difference in the relationship was seen between the attitude and continuous usage intention, where female social network users had a more robust and significant relationship than their male counterparts.

This study uses the self-regulation theory to understand the continuous usage intention of social networks in the Indian context. This research study contributes to the existing literature on social networks/social media and the adoption intention.

The nature of the relationship between the Arabs and China in its historical and current dimensions raises the issue of compatibility and coexistence and the possibility of its continuity among nations and cultures. During the fifteenth-century-period, in which Arab–Chinese relations developed, a model of coexistence and harmony between the two civilizations and cultures emerged, which is rare to find in the history of relations between societies and countries. In this chapter, the researchers attempt to return to history to discuss the forms of the development of peaceful relations between China and Arab societies, and the cultural and psychological motives that led to the normalization of political relations in a pattern of mutual respect and peaceful cooperation on many common issues, which still continue to affect positively the relations between China and the Arab world nowadays. The study found that the nature of the eastern mentality of both parties and the positive stereotypes that each side has about the other long time ago have contributed decisively to shaping these relations in the subsequent centuries.

This paper aims to attempt to present a number of higher purposes of Islamic law that include within their scope the preservation and protection of the natural environment. Such preservation is in the best interest of mankind.

The researchers have extrapolated evidence from the Qur’an and authentic traditions of the Prophet (PBUH) that afford a sense of certainty that Islamic laws contain operative or effective causes (illa) seeking the welfare of human beings and society.

The Qur’an and Sunnah have placed great importance on the preservation and protection of the environment. They have extolled the merits of treating the environment with care and compassion. Evidence of this can be found in authentic hadiths beginning with the Book of Purity and is found in many of the teachings concerning worship rituals and civic activities.

The researchers have attempted to present a number of higher purposes of Islamic law that include within their scope the preservation and protection of the natural environment. Such preservation is in the best interest of mankind. For this, the researchers have extrapolated evidence from the Qur’an and authentic traditions of the Prophet (PBUH) that afford a sense of certainty that Islamic laws contain operative or effective causes (illa) seeking the welfare of human beings and society.

To analyze the challenges and intricacies involved in managing the physical and administrative aspects of central mosques, with a specific focus on the Kumasi Central Mosque in Ghana. Through this case study, the paper aims to provide insights into the unique estate management practices and design a conceptual framework that incorporates efficient estate management practices for Ghana’s central mosques.

The study adopted a mixed-methods approach. Structured questionnaires were used to gather the data administered to the head of the development office, maintenance workers and mosque users. The data were analyzed using descriptive methods.

The overall findings of the study indicate that the estate management practices of the mosque are having difficulties financing maintenance. Other difficulties include the type of maintenance regime, the period of planned maintenance, the lack of an asset register, the absence of insurance policies and the causes of emergency maintenance.

The research provides valuable insights into the management of central mosques in Ghana and offers scalable practical recommendations such as adopting a planned maintenance regime, insuring mosque facilities and implementing comprehensive recording-keeping guidelines guided by policies.

The paper will assist stakeholders in comprehending the most practical approach to mosque estate management practices.

This study aims to investigate the claim that there is no coherent and homogeneous body of concepts and practices that can be classified as “Islamic accounting”.

The study focuses specifically on Islamic accounting and uses a qualitative historical documentary analysis methodology to study an original manuscript from the 14th century.

The analysis of the manuscript argues that religious accounting can be seen as a value-based system for achieving social good and that in the context of Islamic accounting, it can be conceptualised as a coherent body of ideas and practices.

Firstly, the study conceptualises Islamic accounting as a homogeneous discipline with its own knowledge, concepts and practices. Secondly, it contributes to current accounting literature by examining an ancient manuscript from the 14th century, which serves as a foundation for understanding the Islamic accounting system within the context of accounting, religion and spirituality. The paper further contributes by arguing that this conceptualisation of religious accounting as a value-based approach enables its practitioners to evaluate their own accountabilities in delivering on socioeconomic objectives related to inter-human/environmental, social and financial transactions within the context of religious accounting practices.

This study aims to verify the antecedents influencing mobile gamers’ intentions to purchase mobile phones. To this end, the constructs price–quality relationship, price sensitivity, perceived quality, identification with the group of gamers and referrals from other gamers were identified in the literature.

Data were collected through an online questionnaire with 335 consumers. The model was tested using partial least squares.

It was verified that the price–quality relationship directly influences mobile gamers' intentions to purchase mobile phones. Also, it was observed that price sensitivity of mobile gamers directly influences the price–quality relationship and indirectly influences the intention to purchase mobile phones to play games. It was further verified that this price sensitivity is directly influenced by the perceived quality of mobile gaming devices. Finally, it was observed that referrals from other gamers directly influences the perceived quality and onès identification with the group of gamers.

This study concluded that developing strategies focused on prices of mobile phones gamers use to play games tends to influence mobile gamers' purchase intentions. This paper extends the study of mobile device purchase behavior, uniting constructs studied separately and proposing connections not yet tested, assisting in the theoretical understanding of the factors that contribute to the intention to purchase mobile devices.

This study is theoretically justified for four reasons: it focused on a specific group of consumers, mobile gamers, which is a constantly growing audience; it brought an innovative model, testing the influence of the perceived quality of mobile gaming devices on the price sensitivity of mobile gamers; there are spaces for new research on mobile device purchase intention; and it may assist in the theoretical understanding of the factors contributing to mobile device purchase intention.

The paper aims to explain how agility capabilities (competence, flexibility, responsiveness and speed) influence the chance of improving a small and medium-sized enterprise's (SME's) competitive position, measured by market share and profit.

Combining organisational agility with competitiveness, the authors analysed how an SME's activities in the field of agility capabilities – competence, flexibility, responsiveness and speed – influence the chance of improving their competitive position. Data were collected from 1,286 SMEs from Poland using the computer-assisted personal interviews method (CAPI). To analyse the data, the authors used logistic regression and odds ratios.

The study provides empirical evidence of the relationship between agility capabilities and an SME's competitive position. First, the results suggest that all the studied agility capabilities positively impact SMEs' competitive position. Second, the study shows that seeking to increase market share requires particular attention to flexibility, the impact of which is slightly higher than that of the other variables. Third, the findings suggest that the drive to increase profitability requires an appreciation of responsiveness and competence.

The literature contains much discussion about the relationship between agility capabilities and a company's competitive position. However, these studies refer to large companies, whilst the question of the relationship between agility capabilities and competitive position amongst SMEs remains mainly unanswered, which given SMEs' contribution to the creation of economic growth, seems difficult to understand. Although small companies are by nature highly flexible, due to the size of the companies' operations and flattened and decentralised structure, companies' competitive potential is limited as a result of the limited resources that can be devoted to developing procedures for change.

Najib Mahfuz is the first Arab‐language author to win the Nobel Prize in literature. Born in 1911 the son of a middle‐class Jamaliyah merchant, he became the most popular novelist in Egypt and the Arab countries.