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In 1979, P. Wintgen obtained a basic relationship between the extrinsic normal curvature the intrinsic Gauss curvature, and squared mean curvature of any surface in a Euclidean 4-space with the equality holding if and only if the curvature ellipse is a circle. In 1999, P. J. De Smet, F. Dillen, L. Verstraelen and L. Vrancken gave a conjecture of Wintgen inequality, named as the DDVV-conjecture, for general Riemannian submanifolds in real space forms. Later on, this conjecture was proven to be true by Z. Lu and by Ge and Z. Tang independently. Since then, the study of Wintgen’s inequalities and Wintgen ideal submanifolds has attracted many researchers, and a lot of interesting results have been found during the last 15 years. The main purpose of this paper is to extend this conjecture of Wintgen inequality for bi-slant submanifold in conformal Sasakian space form endowed with a quarter symmetric metric connection.

The authors used standard technique for obtaining generalized Wintgen inequality for bi-slant submanifold in conformal Sasakian space form endowed with a quarter symmetric metric connection.

The authors establish the generalized Wintgen inequality for bi-slant submanifold in conformal Sasakian space form endowed with a quarter symmetric metric connection, and also find conditions under which the equality holds. Some particular cases are also stated.

The research may be a challenge for new developments focused on new relationships in terms of various invariants, for different types of submanifolds in that ambient space with several connections.

The purpose of this paper is to investigate the factors that influence the intention to choose family takaful in Pakistan through using theory of reasoned action (TRA) model. While family takaful is not a new financial solution in the market, the main factors that motivate customers to purchase family takaful remain unexplored. To fill this gap, this paper investigated the impact of attitude (ATT), subjective norm (SBN) with the addition of Halal certification (HCT) to predict the behavioral intention of customers in Pakistan.

The sample data of 250 respondents was drawn for this paper. The respondents were the regular visitors to the Islamic banks in Pakistan and were selected through judgmental sampling. Of 250, total 237 responses were included in the final study, after excluding the inappropriate and missing responses. For the final data, EFA, CFA and SEM were used to test the significance of relationships between the IVs (ATT, SBN and HCT) and DV (BI).

Findings from the SEM analysis suggest that ATT, SBN and HCT have positive significant relationships with BI. SBN appeared to be the most influencing factor that influences the behavioral intention to purchase family takaful.

The paper has practical implications for takaful managers and academics. Bank managers can draw marketing communication policy based on the findings of this paper. While for academics, this paper laid a foundation for future studies by integrating Halal certification in TRA as a predictor to the behavioral intention towards selecting family takaful. The empirical nature of this paper will enhance understanding of the Islamic financial market and its customers specifically.

The findings of the paper also hold significance for managers and policy-makers of Islamic financial institutes. It guides to design the marketing strategies to develop the right attitude of customers, emphasize subjective norms and Halal certification when communicating the family takaful products to customers. As such, brand managers of family takaful may leverage the role of belief in developing the right attitude and then linking it to the family takaful brand. The attitude is rooted in the belief, and for family takaful brands, it potentially be useful to allow it a broader space in the brand strategies. Likewise, subjective norms in terms of choosing family takaful comprises the perceived social pressure of customers feel towards purchasing takaful for families. It highlights the role of social contacts and effect of their behavior and choices over customers. The recommendations and positive feedback customers receive from their social contacts can be instrumental in instilling the sale of family takaful. In the context of Halal certification, the findings of this paper call takaful brand managers’ attention to the significant role Shariah compliance plays for potential customers of family takaful.

The findings of the paper also have significance for managers and policy-makers of Islamic financial institutes. The findings of this paper guide them to develop marketing strategies, develop the right attitude of customers, emphasize subjective norms and Halal certification when communicating the family Takaful products to customers.

Family takaful is relatively a new phenomenon that demands empirical evidence for academics and managers. This is one of the early studies that investigates the determinants of purchase of family takaful through extended TRA model. Therefore, this investigation will serve as a cornerstone to the scant knowledge of family takaful in Pakistan and around the globe.

The purpose of this study is to examine the impact of corporate governance (CG) on intellectual capital efficiency (ICE) in Islamic banks (IBs) of Organisation of Islamic Cooperation (OIC) countries.

A sample of 129 IBs is drawn from the 29 OIC countries from 2008 to 2017. A two-step system of the generalised method of moments has been employed to account for the unobserved endogeneity and heteroscedasticity issue that arose due to time-variant and time-invariant variables.

The results revealed that CG measures, namely board size, non-executive directors do explain the extent and quality of ICE in the expected direction. In contrast, CEO duality, Shariah board and audit committee are negatively associated with the ICE. Moreover, the authors observed that male CEO in IBs has negative, but foreign ownership has a positive association with ICE in determining the extent of ICE in IBs. This study contributes specifically to the stakeholder theory and the literature of ICE and CG.

The findings of the study provide insight into how a larger board can overcome skill deficiency and how making more investment in ICE would help to enhance productivity. Hence, bank managers, regulators, policymakers and shareholders have strong interest in designing the appropriate CG structure to develop ICE in banks.

This is one of the few studies which provide empirical evidence of CG mechanism to boost the ICE in the perspective of IBs of the OIC countries.

The purpose of this study is to address the lack of a proper database or finding system for scholars of Islamic economics (IE), as well as the dearth of literature on bibliographic search and trend analyses of scholars in this field. This study aims to adopt a bibliometric review of the bibliography of experts in IE and scholars in disciplines allied to IE.

This study adopts a bibliometric review of the bibliography of experts in IE and scholars in disciplines allied to IE. The researchers collected data on scholars’ profiles and scholarly works and analyzed them to identify trends and patterns.

This study presents two main themes: the profiles of the scholars in IE and allied disciplines, and their scholarly works. The findings on the scholars’ profiles reveal that most scholars are contemporaries born between the 1940s and 1990s, concentrated in Malaysia and affiliated with the International Islamic University Malaysia. Regarding their scholarly works, the majority of their efforts resulted in 11,736 materials in the form of books, articles and conference papers spread across 13 sub-areas in IE.

This study fills the gap in literature by providing a database and finding system for scholars in IE and conducting a bibliographic search and trend analysis of scholars in this field. The findings shed light on the profiles of scholars and their scholarly works, which can guide future research in this area.

There are many areas of research that are untapped in Islamic banking, and human capital is one of them. This paper aims to systematical review the relevant literature on human capital and Islamic banking.

The review process involved a structured search using well-established academic databases, Scopus and Web of Science, resulting in the selection of relevant articles. The paper has been divided into three major themes, besides other discussions on the literature, including methods of measuring human capital, determinants of human capital and human capital and performance of Islamic banks.

A few pioneering studies have explicitly examined human capital in the Islamic banking domain, while others have encompassed it under the broader umbrella of intellectual capital. The most common method of measuring human capital is accounting based, while few have adopted disclosure and survey methods as well. There are few studies that explored the determinants of human capital having focus on corporate governance, while many of the studies have explored the nexus of human capital and financial performance.

This review strongly highlights the need for more focused research on human capital within the Islamic banking sector. As Islamic banking necessitates unique human capital characteristics, it is essential to delve deeper into this aspect. Furthermore, there is a call to expand the human capital index by incorporating comprehensive aspects relevant to Islamic banking. An important area that requires further exploration is the role of Shariah governance in shaping human capital development within Islamic finance, understanding the reasons behind the observed negative correlation.

Despite its significance, the relationship between human capital and Islamic banking has received limited attention. This review paper not only addresses this gap but also lays the groundwork for future studies in this important and emerging field.

The existing literature asserted that the Islamic banking industry progress significantly, but it has increasingly found asset deficient which assaulted the performance of Islamic banks (IBs). The aim of this study to examine the mediating role of intellectual capital (IC) on the relationship between corporate governance (CG) mechanisms and IBs performance is examined (ATO, NPM).

A panel sample of 129 IBs is drawn from the 29 organisation of Islamic cooperation (OIC) countries from 2008 to 2017. Two-step system generalized method of moments (2SYS-GMM) was used to account for the unobserved endogeneity and heteroscedasticity problem.

The empirical findings demonstrate that there is a significant impact of the CG mechanism on IC. Moreover, the empirical findings indicate that CG has a direct influence on banking performance but it affects indirectly through IC. IC also appears to have a mediation role in the relationship between the CG mechanism and the performance of IBs.

As the empirical research on IC from CG point of view in Islamic banking is generally new in the banking literature, the output of this research will contribute to the building up of empirical framework and practices regarding IC in the Islamic banking industry by using the resource-based theory as a leading theory and agency theory as a sub theory. It is anticipated that this study provided a superior comprehensive discussion of the IC in IBs across OIC countries which discovers the CG mechanism to influence the IC to improve banking performance.

This study offers useful insights to the regulators and practitioners to draw the rules and regulations in improving the CG mechanism and the effectiveness of internal controls by acknowledging the importance of IC in Islamic banking institutions. Particularly, the findings of this study may be of benefit to bankers to efficiently use the IC as a premise to design new and creative strategies to achieve a competitive advantage in the banking industry.

The study is unique in its nature because it presents a successful model for IBs to concentrate more on the role of IC in enhancing banking performance, which might be used by the banks to rearrange the roles within CG, to place their priorities regarding the internal governance system and financial plans for competency enhancement.

The present study investigated the influence of country-level institutional quality on IPO initial return using World Bank Governance indices.

This study analysed 84 IPOs listed on Pakistan Stock Exchange between 2000 and 2017 using cross-sectional data. The impact of country-level institutional quality on IPO initial returns was examined using ordinary least square, robust least square, stepwise least square and quantile regression.

Empirically, the values of political stability, government effectiveness and regulatory quality were positively significant, whereas rule of law and control of corruption were negatively significant in explaining the intensity of IPO initial return. The results also show the presence of significant risk in the market. Hence, investors were compensated with higher initial returns for weak country-level institutional quality. The results also reveal that improving country-level institutional quality would improve the financial market transparency, thereby reducing IPO initial returns.

No studies have been conducted regarding the influence of country-level institutional quality on IPO initial return in Pakistan. This study is a pioneering study that seeks to give insights into the link between these variables in the context of Pakistan.

This paper aims to present a case study analysing the reintegration programs of Malaysian violent extremist detainees and prisoners. It explores the ongoing challenges faced by these individuals as they strive to reintegrate and assimilate into society.

Qualitative data was collected through interviews with 12 violent extremist detainees and prisoners who had successfully reintegrated into society. The life course perspective was used as the analytical framework, and data analysis was conducted using ATLAS.ti.

The study revealed common challenges faced by the participants in gaining societal acceptance, dealing with stigma and achieving economic stability. The results also highlighted the difficulties of sustaining livelihoods due to heightened vigilance in the surrounding environment.

These findings enhance the understanding of factors influencing successful reintegration of people who were involved in violent extremism into mainstream society.

Government bodies, agencies or organisations and non-governmental organisations can implement these successful factors to prevent any issues of recidivism or resentment towards society.

This research contributes unique insights based on data from individuals who have undergone successful or partial successful reintegration. Detailed academic sharing of such information from a Southeast Asian country such as Malaysia is relatively scarce, given the specific procedures required for accessing such data.

The purpose of this paper is to examine the effects of pricing mechanism on initial public offerings (IPOs) oversubscription in Pakistan.

This study used cross-sectional data to analyse 85 listed IPOs on the Pakistan stock exchange during the period of 2000-2017 to assess hypotheses related to influential determinants of IPO oversubscription. Accordingly, ordinary least square, robust regression and quantile regression approaches were applied in this study to evaluate the factors that influenced oversubscription.

The outcome displayed pricing mechanism is negatively significant with an oversubscription of IPOs. This indicates firms using the fixed-price mechanism signalled higher information asymmetry and uncertainty in their value. Thus, investors are aware that they will be offset with underpricing, and it is expected the demand will be higher for the particular IPOs.

This study is entirely focused on the available information of prospectus that should not be ignored by potential investors at the time of subscription of IPO. Therefore, the study contributes to extending the available literature in signalling theory whereby issuers should consider using the book-building pricing mechanism in enhancing the efficiency of the IPO offer price during the listing.

This paper provides evidence for the determinants of the IPO oversubscription.

The purpose of this paper was to examine whether or not the sponsor lock-up ratio, lock-up period, regulation changes and interaction variable (oversubscription [OSR]) affected initial public offering (IPO) initial return.

A complete sample of 111 listed IPOs in Pakistan stock exchange from 1996 to 2018 was incorporated. Based on the cross-section data, this paper estimated using ordinary least square and quantile least square for robustness. In addition to that, this paper estimated the data using stepwise least square to inspect the signalling aspect of the lock-up ratio, lock-up period and regulation changes on IPO initial return.

This study showed that the lock-up ratio, lock-up period and regulatory changes had a positive impact on the IPO’s initial return. Furthermore, the assertion of interaction variable (regulation changes × OSR) and (lock-up period × OSR) was a negatively significant factor in influencing the IPO’s initial return. The results of this paper were robust to endogeneity bias.

The finding of this study proposed that sponsors of IPOs can be a strong signal of risk or quality, which was consistent with the signalling theory prediction. Concurrently, investors must be aware of the total proportions of lock-up ratio so that they can estimate the chances of getting the highest initial return on IPOs. From the regulators’ point of view, it is suggested that the lock-up ratio and the lock-up period should be determined with a deeper understanding and incorporated into the equity guidelines as it is evident that these factors are priced by the market.

Studies on the effect of sponsors have always been centred on well-recognized firms. Therefore, using the IPO samples listed in Pakistan, this paper contributes to the IPO literature by investigating the lock-up ratio of the sponsor, the lock-up period and the regulatory changes to the initial IPO return. Additionally, OSR has been introduced as an interaction variable among the sponsors’ lock-up period and regulations changes to explain the ongoing IPO initial return phenomenon.