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Due to the environmental issues caused by petroleum lubricants used in lubrication, the concept of creating various bio-lubricants requires research globally. Thus, this study aims to develop, characterize and test the base ficus carica oil (fig oil) for its ethylene vinyl acetate copolymer (EVA) and sodium dodecylbenzene sulfonate (SDBS) content.

The sample characterization was done using the Fourier transmission infrared spectrum, whereas the morphologies of the EVA, SDBS particles and lubricated surfaces were carried out under scanning electron microscope equipment. To ensure the homogeneity of the solution (base oil and additives), the formulations were subjected to the sonication process. The anti-friction and anti-wear properties of EVA and SDBS particles as lubricant additives were investigated using a ball on a flat high-frequency reciprocating rig tribo-tester.

According to the findings, the base oil’s anti-friction and anti-wear capabilities can be greatly enhanced by the additions. revealed that the best results were obtained when 1.2% EVA + 2% SDBS was applied for the examination of wear (597.8 µm) and friction coefficient (0.106). Commercial references were used, nevertheless, and the results were excellent. This is because the particles in the contact area during lubrication have strong solubility and quickly penetrate the contact zone. The lubricating mechanisms were explained by a tribological model of the EVA + SDBS and SDBS particles.

The coefficient of friction and wear reduction caused by the use of the additives will certainly enhance system performance and protect the machine components from excessive wear that could cause damage or failure.

The originality and uniqueness of this work are officially affirmed by the authors. The authors’ autonomous and original contribution to the development of sustainable lubrication is represented in this work. To the best of the authors’ knowledge, no other study has been published or made publicly available that duplicates the precise scope and goals of our research, and this conclusion is based on a thorough literature assessment.

This study aims to explore the COVID-19 impact on the sustainability of gharimin (genuine debtors) in Islamic financial institutions (IFI) in Malaysia. The analysis was further conducted to expand the interpretation of gharimin in zakat institutions (ZI) to use the role of zakat distribution during the post-pandemic period due to income shock and long-term unemployment.

This study adopted a qualitative research approach with grounded theory analysis to integrate theoretical insights into the interpretation of gharimin and current practices from the perspectives of ZI and IFI. An in-depth interview with 18 informants was conducted, and data were collected from senior management positions in the zakat distribution department, academicians who are experts in the area of zakat, and heads of Shariah departments in IFI.

Expanding the interpretation of gharimin could help ZI and IFI recover the sustainability of gharimin for preparedness during post-pandemic and any emergency crisis in the future.

This study implies the potential role of ZI in combating the risk of defaulting debtors in IFI to prepare for pandemic recovery in the future.

The new interpretation assists gharimin in reducing the burden debt using the zakat fund and protects genuine debtors by preventing IFI from declaring default or bankruptcy.

This study narrows the literature gaps about gharimin in IFI in the context of the pandemic. To the best of the authors’ knowledge, this is, perhaps, the first paper to present the expansion of interpretation for gharimin into mu’sir in IFI in Malaysia.

This paper evaluates how institutions of governance and macroeconomic uncertainty influence efficiency of financial institutions in the subregion of Sub-Saharan Africa (SSA). Data for the empirical inquiry were compiled from relevant sources for 33 countries in the subregion from 2002 to 2019. Empirical estimates verifying hypothesized relationships were carried out using the continuous updating estimator (CUE) by Hansen et al. (1996).

The purpose of this paper is to evaluates how institutions of governance and macroeconomic uncertainty influence efficiency of financial institutions in the subregion of Sub-Saharan Africa (SSA). Data for the empirical inquiry were compiled from relevant sources for 33 countries in the subregion from 2002 to 2019. Empirical estimates verifying hypothesized relationships were carried out using the continuous updating estimator (CUE) by Hansen et al. (1996).

The results suggest that institutional quality has significant positive effect on financial institution efficiency, supporting the view that improved and supportive structures of governance tend to promote operational efficiency among financial institutions among economies in SSA. In addition, improvement in individual governance indicators such as corruption control, government effectiveness, regulatory quality and rule of law was also found to support or enhance efficiency of financial institutions among economies in the subregion. Macroeconomic uncertainty on the other hand is found to impede efficiency of financial institutions; the same condition (macroeconomic uncertainty) is further found to negate any positive impact corruption control, government effectiveness, regulatory quality and rule of law have on operational efficiency among financial institutions in the subregion.

Unlike most of related studies, this study adopts a different approach on the dynamics of financial institutions. Approach pursued in this empirical inquiry examines how the regulatory environment within which financial institutions operate, the form of governance and the quality of government institutions influence efficiency of financial institutions among emerging economies in Sub-Sahara. Empirical analysis conducted examines effects of variables that are unique to this study; these variables are either constructed or econometrically derived specifically for various interactions verified in the study. For instance, institutional quality variable is an index constructed specifically for this study using principal component analysis approach.

The purpose of this study is to investigate the impact factors towards the use of mobile banking among the asnaf for efficient zakat payments by using the unified theory of acceptance and use of technology (UTAUT2) model with additional constructs such as religiosity, attitude and trust (initial trust model) in the Malaysian context.

The structural equation modelling is used to analyse the data collected from 470 asnaf in Selangor, Malaysia, using the survey methodology.

This study highlights factors that could influence the asnaf to adopt financial technology (fintech) in order for them to enjoy the benefit of efficient zakat distribution by the zakat institutions.

This study only investigates and contributes added value from the Malaysian context. While it may be similar to other countries that share similar demographic profiles, it might differ for countries that do not have any demographic similarities with Malaysia.

The result of this study highlights the significant factor that practitioners (zakat institutions) in Malaysia could improve fintech adoption and at the same time enhance the efficiency of zakat distribution for the asnaf.

This research is basically addressing Islamic social financing. Thus, this study has social implications to address the society's poverty eradication scheme pertaining to the efficiency of zakat institutions in Malaysia for the speedier zakat payments to the asnaf. However, other emerging issues also arise particularly in using the zakat funds by the zakat institutions. By right whatever expenditure that the institutions use from the zakat funds need to have the consent from the asnaf because of their religious and legal rights. Hence, this new gap found from the findings of this study could be further explored by other researchers in future studies especially focusing on the drive towards more efficient administration by the zakat institutions of Malaysia in particular and other zakat institutions spread over Muslim countries elsewhere.

This study found that the UTAUT2 model is rarely used and adopted in investigating technology acceptance and adoption especially when it is related to religious matters such as zakat. Indeed, the findings of this study could be acknowledged as something of original value and significance, therefore contributes to the body of knowledge in this field.

Previous studies described the professional zakat had been limited. Generally, the past authors conducted a quantitative method with general results and did not focus on the behaviour of people who pay the professional zakat. As a result, the purpose of this study is to provide a comprehensive understanding of how the general public can pay their zakat using Bloom’s theory.

This research uses primary data with in-depth interviews from five informants, including civil servants (PNS) and private employees. Spiral analysis was used to analyse the data, arrange it, read it frequently, take brief notes, find categories, interpret and summarise it.

The results show Bloom’s theory can accommodate muzakki’s behaviour by paying professional zakat. It can be seen from the following conclusions: firstly, in the cognitive domain, muzakki’s behaviour of paying the professional zakat was motivated by their memories (experiences), the ability to interpret, the ability to understand the principles of zakat, the ability to understand the relations and the ability to understand the role of zakat from its norms. Secondly, in the affective domain, muzakki’s behaviour in paying the professional zakat was motivated by their ability to receive, give positive value, call others and dare to take risks. Thirdly, in the psychomotor domain, guided practice, mechanised practice and adoption drive muzakki’s behaviour of paying zakat.

This study has limitations regarding the number of samples (informants). In addition, the results of the research are designed to be very subjective so that they cannot be generalised to phenomena that exist in other places and countries that also require zakat in the profession. In the future, the results of this study can be used as a variable development with quantitative methods so that it can involve more samples to get maximum and a broader result.

This research has a valuable managerial impact on the zakat management institutions, particularly in Langsa, Aceh, Indonesia and all zakat institutions worldwide. Therefore, the central government can evaluate the zakat gap through various socialisation activities by promoting the cognitive, affective and psychomotor domains. Socialisation should improve people’s behaviour to pay zakat so that the amount of zakat collected will be higher and will reduce the gap between the potency of zakat and the zakat in reality which has been unequal so far.

This research will contribute to the significant development of zakat in terms of studying the behaviour of muzakki paying the professional zakat. Although the theory of planned behaviour was dominated by previous research, this research reveals other aspects of muzakki behaviour using Bloom’s model by elaborating on cognitive, affective and psychomotor domains.

This study aims to propose a temporary waqf model for family waqf by establishing its application parameters, which may facilitate the management of family waqf in Malaysia and encourage new donors to establish waqf.

A qualitative methodology was employed to analyse the data through deductive and field research methods. For field research, this study conducted semi-structured interviews with the Waqf Corporations and Mufti's Department in the selected states within Malaysia.

Results drawn from the interview's findings are that creating family waqf in Malaysia is hindered by several obstacles, including family waqfs not serving the public interest but rather their descendants, and family waqfs have been practised in perpetuity. Besides, inefficient management of family waqf and a lack of an effective mechanism and parameter exists. Therefore, this study presented a conceptual framework for a temporary cash waqf model for family waqf along with the parameters that can be used to implement it. The temporary waqf is a strategy to develop waqf property and the interests of creators, beneficiaries and trustees. Temporary waqf merged into the family waqf yields benefits to the family waqf.

Because of Malaysia's Waqf Regulation and Administration, this study was confined to selected states. This study has broadened the scope of temporary family waqf, including moveable, immovable property and cash waqf.

This study presented a temporary waqf model for family waqf as a realistic mechanism and criterion for its practical implementation in Malaysia.

This study could encourage new donors to establish waqf.

This study’s novelty lies in its attempt to highlight the importance of the temporary waqf model as a practical mechanism with holistic principles for its implementation in Malaysia to benefit the donors, their families and trustees. In addition to family waqf, numerous temporary waqfs may be established, in which the income or usufruct is shared proportionally, such as charitable waqf (waqf khairi), private waqf (waqf khas) and joint waqf (waqf mushtarak).

This study aims to identify the enabling factors for Building Information Modeling (BIM) adoption in Vietnamese construction enterprises and uncover their interrelationships. This will help stakeholders focus on controlling and allocating resources (time, personnel, and costs) appropriately to adopt BIM and differentiate themselves from fierce competition in the architectural, engineering, construction and operations (AECO) industry.

This study first identifies and evaluates 32 enabling factors for applying BIM in the Vietnamese construction industry according to the TOE extended framework. Afterwards, a hybrid questionnaire survey using a convenient sampling method is conducted to capture stakeholders' views. The exploratory factor analysis (EFA) and the partial least squares structural equation modelling (PLS-SEM) technique are then applied to identify the constructs of the enabling factors and their interrelationships.

The study extracts six constructs that could have a significant impact on the adoption of BIM in construction enterprises, namely: technical feasibility (TF), human resources and management (HRM), company business vision (CBV), political environment (PE), economic viability (EV), and legal aspects (LA). Based on eleven proposed hypotheses, the analysis results confirm nine hypotheses and show that the HRM, TF, and CBV have the strongest effects on managers in evaluating the factors for BIM.

The results of the study fill the gap in knowledge by discovering the interrelationships among the enabling factors for BIM adoption in construction enterprises. The results might support the construction enterprises and their stakeholders in increasing the application of BIM, and digital transformation in construction industry.

The construction industry has actively attempted to tackle the low-productivity issues arising from inefficient construction planning. It is imperative to understand how construction practitioners perceive technology integration in construction planning in light of emerging technologies. This study intended to uncover unique experimental findings by integrating 4D-building information modelling (BIM) to virtual reality (VR) technology during construction planning among construction professionals at light steel framing (LSF) projects.

The building industry participants were invited to provide inputs on two different construction planning methods: conventional and innovative methods. The conventional method involved the participants using traditional platforms such as 2D computer-aided design (CAD) and physical visualisation of paper-based construction drawings for the LSF assembly process with a Gantt Chart tool to complete construction planning-related tasks for the targeted project. Comparatively, participants are required to perform the same tasks using more innovative platforms like 4D-BIM in a VR environment.

A Charrette Test Method was used to validate the findings, highlighting an improvement in usability (+10.3%), accuracy (+89.1%) and speed (+30%) using 4D BIM with VR compared to the conventional paper-based method. The findings are also validated by a paired t-test, which is supported by the rationality of the same findings. This study posits positive results for construction planning through the utilisation of modern practices and technologies. These findings are significant for the global construction industry facing low productivity issues, delays and certainty in terms of building delivery timelines due to poor construction planning.

This new blend of technologies—combining 4D BIM and VR in industrialised construction projects—potentially directs future initiatives to drive the efficiency of construction planning in the building lifecycle. The interactive BIM-based virtual environment would purposefully transform construction planning practices in order to deliver modern and more certain building construction methods with a focus on prefabrication processes.

This paper aims to provide bibliometric data from previously published research in Islamic fund management. Several categories, such as the most influential authors, the keywords and themes of the previously published research, were analyzed. Also, this paper provides a rigorous background for Islamic mutual funds research by synthesizing and reviewing the content of the previously published research to identify the gaps and provide future research direction.

Data were gathered from Scopus databases from the year 2007 until 2022. A total of 115 articles were found published over the period of 15 years. Three different software, namely, R-Studio, VOSviewer and Excel are used to analyze the data that depict, among others, the most impactful authors in the field, the top journals covering Islamic fund management research and the most cited document. Content analysis of the previously published research was also provided.

Publication in Islamic funds started gaining attention in the year 2012 and after. Collaborative works on Islamic funds are not strong yet among the contributory nations, although the USA and Malaysia contributed the highest number of publications. This study also found that there was a lack of research collaboration among authors in this research field, and most of the articles published were concentrated on the performance measurements of Islamic funds.

Researchers might find the results of this paper useful, as they provide a comprehensive analysis of the previously published research in the field.

While these findings gave an overview of the intellectual structure of the research field, they also have the potential to inspire scholars working on Islamic funds research to collaborate on new research projects. Managers can also use this research to further enhance the emergence of Islamic fund management.

This is a comprehensive paper that examines previously published research in the field of Islamic fund management. The findings of this research benefit practitioners and researchers wishing to embark on research in this niche area.

The purpose of this study is to assess the perceptions of Imam Abdulrahman Bin Faisal University's students and their household members about cultural heritage conservation in selected cities of Saudi Arabia. Cultural heritage conservation is increasingly important for sustainable tourism management, especially in Saudi Arabia that sets out to promote international tourism. However, a lack of awareness of heritage values among the local community could hinder the conservation efforts.

A structured questionnaire (n = 168) was employed for data collection and analyzed using descriptive and inferential statistics.

The finding of the t-test analysis indicates significant statistical relationship between occupation and community involvement (P (T ≤ t) one-tail = 0.0047 and two-tail = 0.0093, p < 0.05), and between educational level and community involvement (P (T ≤ t) one-tail = 0.0047 and two-tail = 0.0093, p < 0.05). The findings reveal that although almost more than half (54.2%) of the participants were students, 56.0% and 54.9% did not believe in participating and considering heritage conservation a national duty, respectively, while 57.1% of the public employees, 57.6% of the private employees, and 66.7% of the housewives indicate that they can personally participate in cultural heritage conservation and believed it to be a national duty.

The study concludes that cultural heritage courses should be offered as a core courses for college students in order to instill the importance of cultural heritage conservation in their minds.