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Assessing the failure probability of engineering structures is still a challenging task in the presence of various uncertainties due to the involvement of expensive-to-evaluate computational models. The traditional simulation-based approaches require tremendous computational effort, especially when the failure probability is small. Thus, the use of more efficient surrogate modeling techniques to emulate the true performance function has gained increasingly more attention and application in recent years. In this paper, an active learning method based on a Kriging model is proposed to estimate the failure probability with high efficiency and accuracy.

To effectively identify informative samples for the enrichment of the design of experiments, a set of new learning functions is proposed. These learning functions are successfully incorporated into a sampling scheme, where the candidate samples for the enrichment are uniformly distributed in the n-dimensional hypersphere with an iteratively updated radius. To further improve the computational efficiency, a parallelization strategy that enables the proposed algorithm to select multiple sample points in each iteration is presented by introducing the K-means clustering algorithm. Hence, the proposed method is referred to as the adaptive Kriging method based on K-means clustering and sampling in n-Ball (AK-KBⁿ).

The performance of AK-KBⁿ is evaluated through several numerical examples. According to the generated results, all the proposed learning functions are capable of guiding the search toward sample points close to the LSS in the critical region and result in a converged Kriging model that perfectly matches the true one in the regions of interest. The AK-KBⁿ method is demonstrated to be well suited for structural reliability analysis and a very good performance is observed in the investigated examples.

In this study, the statistical information of Kriging prediction, the relative contribution of the sample points to the failure probability and the distances between the candidate samples and the existing ones are all integrated into the proposed learning functions, which enables effective selection of informative samples for updating the Kriging model. Moreover, the number of required iterations is reduced by introducing the parallel computing strategy, which can dramatically alleviate the computation cost when time demanding numerical models are involved in the analysis.

This paper investigates the effect of Islamic entrepreneurship on small and medium-sized enterprises' (SMEs) business performance and the development of a framework to comprehensively investigate Islamic entrepreneurship to achieve competitive business advantages. Islamic entrepreneurship was measured through the Islamic entrepreneurial model, which is based on two unobserved constructs: business and spiritual perspectives. These two constructs were used as predictors of business performance. This paper aims to develop a new scale of Islamic entrepreneurship from business and spiritual perspectives to achieve SMEs’ successful business performance.

In total, 189 Muslim respondents were involved and analyzed their responses using exploratory factor analysis and confirmatory composite analysis.

The empirical findings proved that the Islamic entrepreneurial scale with two perspectives is an absolute measure. Besides, the predictive validity findings revealed that business (i.e. trustworthiness, honesty and truthfulness) and spiritual perspectives of Islamic entrepreneurship (i.e. Taqwa, good intention and respecting religious obligations) positively affected SMEs’ business performance.

The novelty of this study lies in expanding the existing research, developing a measurement scale and empirically testing the Islamic entrepreneurship model. To the best of the authors’ knowledge, this is the first study that contributes to the Islamic entrepreneurship literature in the SME context and offers new avenues for potential researchers. The new scale will allow SMEs to understand the halal and haram concepts in more depth and apply the Islamic rules and principles with full spirit.

This paper aims to explore the root cause of growing gap in Islamic moral ideals and practices by examining paradigmatic foundation and moral axioms of Islamic business ethics. It compares and contrasts Tawhidi and secular paradigms in terms of their moral axioms and ethical mandates.

The paper first presents the paradigmatic foundation of Islamic ethics, namely, ihsan ethics. Second, it compares Tawhidi paradigm of Islam with secular paradigm in respect to their ontological, axiological, anthropological and teleological differences. Third, it links to Islamic moral axioms to the relevant paradigmatic pillars. Fourth, it defines “ihsan ethics” based on Tawhidi paradigm and moral axioms. Finally, it sheds some light on the gap between moral ideals and realities through the theory of ihsan ethics.

The paper attempts to provide strong conceptual and theoretical tools to understand ethical problems in the Muslim societies. The paper makes a strong case that Muslim minds shall be de-secularized to perceive the reality, truth and telos within Tawhidi worldview. As Muslims reach the level of ihsan by perceiving transcendental reality, they are likely to practice what they preach.

The paper proposes “ihsan ethics” based on Tawhidi worldview and Islamic moral axioms.

The efficiency of each of an organization’s individual workers determines its effectiveness. The study aims to explore the relationship between human resource management (HRM) practices and organizational effectiveness with employee performance as a mediating variable.

Data were collected from 800 police officers in the Greater Accra and Tema regions. The data were supported by the hypothesized relationship. Construct reliability and validity was established through confirmatory factor analysis. The proposed model and hypotheses were evaluated using structural equation modeling.

The results show that career planning and employee performance were significantly related. Self-managed teams and employee performance were shown to be nonsignificantly related. Similarly, performance management and employee performance were shown to be nonsignificantly related. Employee performance significantly influenced organizational effectiveness. The results further indicate that employee performance mediates the relationship between HRM practices and organizational effectiveness.

The generalizability of the findings will be constrained due to the research’s police service focus and cross-sectional data.

The study’s findings will serve as valuable pointers for the police administration in the adoption, design and implementation of well-articulated and proactive HRM practices to improve the abilities, skills, knowledge and motivation of officer’s to inordinately enhance the effectiveness of the service.

By evidencing empirically that employee performance mediates the relationship between HRM practice and organizational effectiveness, the study extends the literature.

This study aims to focus on the main materials used in consolidation processes of illuminated paper manuscripts and leather binding.

For each material, chemical structure, chemical composition, molecular formula, solubility, advantages, disadvantages and its role in treatment process are presented.

This study concluded that carboxy methyl cellulose, hydroxy propyl cellulose, methyl cellulose, cellulose acetate, nanocrystalline cellulose, funori, sturgeon glue, poly vinyl alcohol, chitosan, chitosan nanoparticles (NPs), gelatin, aquazol, paraloid B72 and hydroxyapatite NPs were the most common and important materials used for the consolidation of illuminated paper manuscripts. For the leather bindings, hydroxy propyl cellulose, polyethylene glycol, oligomeric melamine-formaldehyde resin, acrylic wax SC6000, pliantex, paraloid B67 and B72, silicone oil and collagen NPs are the most consolidants used.

Illuminated paper manuscripts with leather binding are considered one of the most important objects in libraries, museums and storehouses. The uncontrolled conditions and other deterioration factors inside the libraries and storehouses lead to degradation of these artifacts. The brittleness, fragility and weakness are considered the most common deterioration aspects of illuminated paper manuscripts and leather binding. Therefore, the consolidation process became vital and important to solve this problem. This study presents the main materials used for consolidation process of illuminated paper manuscripts and leather bindings.

After completion of the case study, the students will be able to analyze the FinTech industry in emerging markets, distinguish the growth strategies for startups in the hyper-growth phase, using the Ansoff matrix, evaluate and select geographical markets for expansion (foreign country selection) and understand the liability of foreignness concept.

In 2015, Islam Shawky, Alain Al-Hajj and Mostafa Menessy founded Paymob in Egypt, a FinTech start-up providing technological and financial solutions to consumers and merchants in the country. The company had grown into one of Egypt’s most prominent digital payment providers by deploying infrastructure and technologies that empower the underserved with access to financial services. In 2021, Paymob had gained a lot of support from venture capital investors that ended with closing the largest in Egypt Series A fund of $18.5m led by Dubai-based venture capital firm Global Ventures. Although Paymob had already reached great success in Egypt, the founders’ vision was to become the regional leader of digital payments, focusing on small and medium-sized enterprises. So, they are considering regional markets similar to Egypt’s, such as the Kingdom of Saudi Arabia, a call with a lot of structure but a lot of competition, and Pakistan, a market with much less competition but relatively unstructured. The founders found themselves in early 2022 deciding between these two markets in preparation for the next round of Series B $50m funding.

This case study can be useful for courses in executive education.

Teaching notes are available for educators only.

CSS 3: Entrepreneurship.

The purpose of this paper is to carry out a comprehensive review of some latest studies devoted to natural convection phenomenon in the enclosures because of its significant industrial applications.

Geometries of the enclosures have considerable influences on the heat transfer which will be important in energy consumption. The most useful geometries in engineering fields are treated in this literature, and their effects on the fluid flow and heat transfer are presented.

A great variety of geometries included with different physical and thermal boundary conditions, heat sources and fluid/nanofluid media are analyzed. Moreover, the results of different types of methods including experimental, analytical and numerical are obtained. Different natures of natural convection phenomenon including laminar, steady-state and transient, turbulent are covered. Overall, the present review enhances the insight of researchers into choosing the best geometry for thermal process.

A comprehensive review on the most practical geometries in the industrial application is performed.