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The purpose of this paper is to investigate the nonlinear relationship between shadow economy and income inequality and determine whether the size of shadow economy can influence the level of income inequality.

Both parametric (panel OLS) and nonparametric/semiparametric regression suggested by Robinson (1988) will be used to capture the dynamic nonlinear relationship between these variables using unbalanced panel data of 154 countries from 2000 to 2007. Additionally, the relationship between income inequality and shadow economy on both developed and developing countries will be analyzed and compared.

First, semiparametric analysis and nonparametric analysis are significantly different than parametric analysis and better in nonlinear analysis between income inequality and shadow economy. Second, income inequality and shadow economy resemble an inverted-N relationship. Third, the relationship between income inequality and shadow economy is different in developed countries (OECD countries) and developing countries, where OECD countries have similar inverted-N relationship as before. However, for developing countries, income inequality and shadow economy show an inverted-U relationship, similar to the original Kuznets hypothesis.

This study suggests that there is a possible trade-off between income inequality and shadow economy and helps policy makers in solving both problems effectively.

Despite the growing importance of income inequality and shadow economy, literature linking the two variables is scarce. To the best of the authors’ knowledge, there is no literature that nonlinearly links these two variables. Furthermore, the dynamics of the relationship between these two variables in developed countries and developing countries will be explored as well.

The purpose of this paper is to identify whether any financial integration exists among ASEAN+5 members and some East Asian countries, including China, Japan, Korea, Hong Kong, and Taiwan, through interest rate, exchange rate, level of prices, and real output.

Therefore, the authors intend to identify any long-term relationship among these variables utilizing the data in the most efficient manner via panel cointegration and panel unit root tests. The study likewise uses a panel-based vector error correction (panel-vec) model for comparison and also short-run relationship analysis. The long-run relationship is estimated using dynamic ordinary least square technique and a panel multi-layer perceptron (MLP) neural network.

For the ten countries under consideration, the empirical result supports the long-run equilibrium relationship among real output, exchange rate, interest rate, and level of prices, and that the cointegration relationship implies unidirectional causality from exchange rate to real output. This result is favorable to a model that contains real output as a dependent variable and exchange rate, interest rate, and level of prices as explanatory variables. Panel-vec results indicate no evidence of short-run causality from exchange rate to real output. Furthermore, the comparison result of long-run equation estimation shows the superiority of neural networks over econometric models.

This paper adds to the literature by examining the financial cointegration using a panel model that contains real exchange rate, interest rate, real output, and inflation rate in ASEAN+5. Additionally this paper applied the MLP neural network to yield a robust estimation of the long-run equation obtained among the variables.

The purpose of this paper is to evaluate the links between intellectual capital sub-components and organizational performance in small and medium enterprises (SMEs) operating in the electrical and electronics manufacturing sector in Pakistan.

Data were collected through structured questionnaires from a sample of 247 respondents from Pakistani SMEs in Gujranwala and Gujarat. Several tests were used to examine the reliability and validity of the research instrument. Finally, multiple regression analysis was used to test the proposed research hypotheses.

The findings of this study demonstrate that the overall regression model of intellectual capital shows goodness of fit while one component of intellectual capital – namely human capital – appeared insignificant. Subsequently, six out of seven research hypotheses was accepted.

This study will provide a valuable framework for entrepreneurs, executives, managers and policy makers in managing intellectual capital within the Pakistani context.

To the best knowledge of the authors, this is the first empirical study that has been conducted on SMEs operating in the electrical and electronics manufacturing sector in Pakistan.

The purpose of this study is to examine and review tayyiban indicators in the context of halal food production. In Islam, food produced or manufactured must be halal and tayyiban. Even though both halal and tayyiban are always mentioned together in the Quran, the halal aspect is highlighted more than tayyiban. The discussion of tayyiban’s indicators is still vague.

The study was adopted based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses for the review of the current research which used two main journal databases, namely, Web of Science and Scopus. Accordingly, the search resulted in a total of 40 articles that can be systematically examined.

The results of review of these articles formulated five main themes: safety, nutrition, cleanliness, quality and authenticity. These five indicators are considered relevant enough in the context of halal food production to build a comprehensive tayyiban concept.

This study enriches the field of halal food research. The concept of tayyiban as a whole has been given limited attention in academic literature. At the end of this study, a number of recommendations are suggested for the reference of future scholars.

This research attempts to assess the role of green intellectual capital components with respect to the sustainability business performance of manufacturing SMEs in Malaysia.

Empirical data for this study were gathered through structured questionnaire forms, from entrepreneurs, managers, and decision-makers of manufacturing, small and medium enterprises. A sample of 500 individuals from 170 manufacturing SMEs from Malaysia was participated. Partial Least Squares (PLS) Structural Equation Modelling technique was used to examine the impact of green intellectual capital on the sustainability business performance of SMEs.

Results expressed that green intellectual capital has a positive significant impact on the sustainability business performance of manufacturing SMEs in Malaysia. Results also posited that the three components such as green customer capital, green technological capital, and green spiritual capital were supported while green human capital, green structural capital, and green social capital were not supported.

The present study inspects how entrepreneurs, managers, and policymakers should practice the concept of green and sustainability to attain maximum benefits from green intellectual capital to increase the sustainability business performance of their organizations.

This pioneering research produces a comprehensive theoretical model of green intellectual capital, supporting the current literature where similar works have been yet. This theoretical model will guide entrepreneurs and managers of SMEs to measure green intellectual capital in SMEs. Despite the significant contribution, this study offers insights to researchers, academicians and practitioners to mitigate environmental destruction and to achieve the sustainable business performance of SMEs in Malaysia and developing countries.

The purpose of this paper is to synthesize porous zinc oxide (ZnO) by means of strain etching/wet chemical etching method with the use of 0.5% of nitric acid (HNO₃) etchant. The structural and surface morphological properties of the samples are accessed by using X‐ray diffraction (XRD) and scanning electron microscopy (SEM) characterization techniques.

ZnO samples used in this work were deposited on the p‐Si (111) substrates by using radio frequency (RF) sputtering technique. Wet chemical etching processes with the use of 0.5% HNO₃ etchant was applied on these samples in order to obtain porous structure. The porous ZnO samples are characterized by means of XRD and SEM to access their structural and surface morphological properties.

The XRD and SEM cross‐sectional measurements revealed that the thickness of the etched ZnO thin films is proportional to the etching time. SEM micrographs show that the surface morphology of ZnO changes over etching time. On the other hand, XRD results indicate that the crystallite sizes of the ZnO(002) decreases when the etching time increases.

The paper shows how porous ZnO thin films have been successfully synthesized by using simple wet chemical etching. SEM images reveal that this method is reliable when producing porous structure ZnO surfaces.

This interdisciplinary study re-evaluates the Sungai Melaka flood mitigation project’s impact on community success in Malaysia’s UNESCO World Heritage site, broadening the definition of success considering historical and cultural significance. This study aims to revisit success metrics, focusing on the project’s influence on people’s interactions, cultural well-being, social cohesion and heritage preservation.

This study explored visitors’ reviews of their experience visiting Sungai Melaka in several data collection stages. The first data collection involved a Web survey posted on Facebook to capture diverse perspectives of the population and grasp the core strand of knowledge to focus on the second data collection, the questionnaire. The final stage involved interviews to generate rich qualitative data.

The findings of this study revealed that the impact exceeded tangible outcomes, as the project impacted people’s interactions and practices. This research assesses cultural benefits, incorporating these indicators into evaluating cultural ecosystem services by capturing local visitors’ and communities’ perceptions, preferences and behaviours. The findings found that other project success attributes include identities, capabilities and experience, further defining learning, health, economics, connection to nature and symbolism.

This research explores the meaning of project success beyond the traditional metrics by capturing success from the users’ perspectives and people’s interaction and their impact on culture and well-being. The cultural ecosystem services framework used in this study is applied to explore the interactions between people and the facility and its effect on the people.

This study aims to reveal how consumers and shoppers are negative toward alcohol, animal fat, producers and certification issues concerned with halal cosmetics products.

In total, 527 students of 4 public universities and a medical college across Bangladesh took part in a survey and 150 shoppers from 2 cities participated in the face to face interview with the structured questionnaires. Frequency distribution was used for categorical and numerical data, and the chi-square test with a binary logistic regression model has tested the association between gender and attitudes toward halal cosmetics. Besides, narratives of Sharīʿah regarding alcohol, meat, fat and halal certification have helped understand the halal issue.

In total, 83% of the respondents perceived negative attitudes against haram animal fat followed by alcohol (74%) and animal fat (64%). The chi-square test shows that consumers held a significant association toward haram animal fat, (p-value 0.000) alcohol, (p-value 0.000) non-Muslim producers (p-value 0.000) and non-Muslim countries (p-value 0.026). Imperatively, the binary logistic regression model has found a significant negative association to haram animal fat (ß2 −0.295) and alcohol (ß1 −0.200).

Marketers ought to avoid haram animal fat in halal cosmetics besides focusing on alcohol freeness. Also, non-Muslim marketers need to be extra cautious in showcasing their identities. However, Islamic marketers will enjoy a competitive advantage in the halal market because of their demographic factors.

Islamic principles on alcohol, meat, fat and certification potentially can help other stakeholders sense the halal norms.

This study has blended the elements of Sharīʿah with empirical evidence to shed light on the fundamental and trust factors for the marketing of halal cosmetics products.

The purpose of this study is to look at the direct relationship between audit quality, earnings management (EM) practices and company performance, as well as the indirect influence (mediation) of EM practices in the relationship between audit quality and company performance. It offers empirical evidence from the Jordanian market, which is considered an emerging market.

The population of this study is represented in Jordanian service companies listed on the Amman Stock Exchange (ASE), with a total of 344 company-year observations. Furthermore, panel data analysis was used in this study, and data for the study were acquired from yearly reports as well as the ASE’s database.

Based on generalized method of moments model, the present findings demonstrate that the size of the audit firm and the tenure of the audit firm have a positive and negative influence on EM practices, respectively, but that industry-specialist audit firm has a negative and insignificant effect. EM practices have a negative impact on two company performance proxies (ROA and ROE), but have no effect on earnings per share (EPS). Furthermore, the size of the audit firm has a positive and significant influence on the performance proxies of the company [i.e. return on assets (ROA) and return on equity (ROE)]. The presence of an industry-specialist audit firm has a positive and significant influence on two proxies of company performance (ROE and EPS), but a negative and significant impact on ROA. An audit firm’s tenure has a negative and significant impact on two performance proxies (ROA and EPS), but a positive and significant impact on ROE. Then, EM practices either fully or partially mediate the relationship between audit quality proxies and company performance as assessed by ROA, ROE and EPS.

The current study’s limitation is that it only searched in Jordanian service companies listed on ASE from 2012 to 2019 to meet the study’s objectives; thus, the authors recommend that future work investigate the study model for other sectors, whether in Jordan or other emerging markets such as the Middle East and North Africa. Another limitation of this study is that the study models lack important variables, which may affect EM and company performance, such as corporate governance and ownership structure characteristics; as a result, the authors recommend that future work includes such variables in future research models to have more explanations in this context.

Analysts, investors and other strategic decision makers may use the findings of this study to improve the efficiency and efficacy of Jordan’s financial market. These findings will enhance policymakers’ willingness to establish appropriate regulations, which might improve Jordan’s financial market performance and efficacy. These findings may help investors make better judgments by using audit quality proxies and EM indicators, which can forecast business success.

First, this study distinguishes itself from prior studies through establishing a new research model, by investigating the mediating effect of EM in the relationship between audit quality and company performance. It provides empirical evidence from the Jordanian market; hence, it increases the body of the knowledge in this context. Second, to the best of the authors’ knowledge, this is the first study to look into the link between audit quality, EM and company performance together; hence, the model of this study is developed using agency theory and information asymmetry theory. Third, the current study adds new evidence to the role of audit quality and EM in companies, as well as how audit quality and EM practices affect company performance in emerging markets such as Jordan.

Despite the significant growth in Islamic economies and the increasing number of Muslim youths inclining digital services, empirical-based research addressing the adoption of digital Islamic services is still limited. ZakaTech is a new phrase that has recently emerged as a modern term describing novel technologies adopted by zakat institutions; yet, it has been largely neglected in the literature. Therefore, this study aims to provide an integrated model that scrutinizes the determinants of acceptance and use of technology (UTAUT) of ZakaTech, combined with social cognitive theory (SCT), in the midst of the COVID-19 crisis where social distancing is the norm in conducting economic activities.

Based on cross-national evidence from two Muslim-majority countries, a total of 1,006 valid responses were collected from zakat payer users in Saudi Arabia and Egypt using a Web-based survey. To validate the research model and draw significant insights, SmartPLS structural equation modeling was used.

By analyzing both Saudi and Egyptian samples, the authors found that all UTAUT constructs are statistically significant, except for effort expectancy in Egypt. The effects of self-efficacy and social isolation on ZakaTech adoption are supported across both countries. Trust in technology reduces users’ inherent risks and increases their likelihood of adopting ZakaTech services in Saudi Arabia, while this is not the case in Egypt. However, the study revealed that trust in electronic-zakat systems (EZSs) is a vital predictor for mitigating perceived risk among Egyptian users of ZakaTech, but it is not the case in Saudi Arabia. Moreover, significant gender differences were found between males and females in the adoption of such digital services in both countries, particularly regarding self-efficacy, trust in EZSs, social isolation and social influence.

The results provide meaningful insights for policymakers to find ways to develop strategies to escalate the adoption of technology in zakat administration and also to create awareness among the users of ZakaTech in a gender-balanced manner that will include zakat payers and recipients as well in the hope that the digital gender divide will be bridged. Bridging the digital gender divide in this regard is imperative for sustainable inclusive development of zakat. Further, strategies need to be developed to provide incentives to zakat authorities and zakat organizations that adopt technology in managing zakat. This is important to escalate the process of fusing technology with zakat, which is an important social finance tool to eradicate poverty in the world.

This research serves as a building block for literature by empirically testing an integrated model of UTAUT-SCT within a modern and unique related context like ZakaTech. Also, it adds value by testing gender disparities in ZakaTech adoption among Muslims.