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The purpose of this paper is to analyse thermal comfort and the thermal environment in naturally ventilated classrooms. Specifically, the aims of the study were to identify the thermal environment and thermal comfort of respondents in naturally ventilated university classrooms and compare them with the ASHRAE and Indonesian National Standard (SNI); to check on whether the predicted mean vote (PMV) model is applicable or not for predicting the thermal comfort of occupants in naturally ventilated university classrooms; and to analyse the neutral temperature of occupants in the naturally ventilated university classrooms.

The study was carried out at the new campus of Faculty of Engineering, Hasanuddin University, Gowa campus. A number of field surveys, which measured thermal environments, namely, air temperature, mean radiant temperature (MRT), relative humidity, and air velocity, were carried out. The personal activity and clothing properties were also recorded. At the same time, respondents were asked to fill a questionnaire to obtain their thermal sensation votes (TSV) and thermal comfort votes (TCV), thermal preference, and thermal acceptance. A total of 118 respondents participated in the study. Before the survey was conducted, a brief explanation was provided to the participants to ensure that they understood the study objectives and also how to fill in the questionnaires.

The results indicated that the surveyed classrooms had higher thermal environments than those specified in the well-known ASHRAE standard and Indonesian National Standard (SNI). However, this condition did not make respondents feel uncomfortable because a large proportion of respondents voted within the comfort zone (+1, 0, and −1). The predictive mean vote using the PMV model was higher than the respondents’ votes either by TSV or by TCV. There was a huge difference between neutral temperature using operative temperature (T_o) and air temperature (T_a). This difference may have been because of the small value of MRT recorded in the measured classrooms.

The research shows that the use of the PMV model in predicting thermal comfort in the tropic region might be misleading. This is because PMV mostly overestimates the TSV and TCV of the respondents. People in the tropic region are more tolerant to a higher temperature. On the basis of this finding, there is a need to develop a new thermal comfort model for university classrooms that is particularly optimal for this tropical area.

This study aims to examine the understudied topic of Islamic entrepreneurship by adapting the framework of waqf-based entrepreneurship to identify the crucial factors driving waqf-based entrepreneurs’ motivation.

A partial least squares structural equation model was used to validate the hypotheses, and in-depth interviews were conducted to gain deeper insights into the findings.

The key findings revealed that self-commitment, entrepreneurial skills and family support exert a significant and positive influence on waqfpreneurs’ motivation to engage in waqf-based entrepreneurship, with self-commitment playing a mediating role between self-actualisation and waqfpreneurial motivation. Additionally, the study proposes categorisations of waqfpreneurs based on the volume of waqf funds managed; their capacity to execute waqf-based entrepreneurship; and institutional performance metrics.

The limited sample size restricts the generalisability of the study. Future research should use a larger sample to generate more broadly applicable results. In addition, the methodology can be replicated in other countries to identify new factors influencing waqfpreneurs’ motivation or to uncover aspects not explored in this research. Future studies could also use qualitative methodologies such as grounded theory, ethnography or case studies. This would allow for a deeper exploration of motivational factors not yet captured, directly from the lived experiences of waqfpreneurs/nazhirs.

The study provides evidence of the key factors that influence waqf-based entrepreneurship, contributing to the literature on entrepreneurship and waqf. It also offers valuable insights for the government and other stakeholders into strategies to motivate waqf-based entrepreneurs, ultimately fostering the development of waqf assets, value creation and sustainable waqf benefit distribution.

The study aims to address the lack of research on Islamic entrepreneurship by specifically modifying the framework of waqf-based entrepreneurship to investigate the key factors that influence individuals’ motivation to conduct waqf-based entrepreneurship and management activities.

This paper aims to study the relationship between the ball grid array (BGA) flip-chip underfilling process parameter and its void formation region.

A set of top-down scanning acoustic microscope images of BGA underfill is collected and void labelled. The labelled images are trained with a convolutional neural network model, and the performance is evaluated. The model is tested with new images, and the void area with its region is analysed with its dispensing parameter.

All findings were well-validated with reference to the past experimental results regarding dispensing parameters and their quantitative regional formation. As the BGA is non-uniform, 85% of the test samples have void(s) formed in the emptier region. Furthermore, the highest rating factor, valve dispensing pressure with a Gini index of 0.219 and U-type dispensing pattern set of parameters generally form a lower void percentage within the underfilling, although its consistency is difficult to maintain.

This study enabled manufacturers to forecast the void regional formation from its filling parameters and array pattern. The filling pressure, dispensing pattern and BGA relations could provide qualitative insights to understand the void formation region in a flip-chip, enabling the prompt to formulate countermeasures to optimise voiding in a specific area in the underfill.

The void regional formation in a flip-chip underfilling process can be explained quantitatively with indicative parameters such as valve pressure, dispensing pattern and BGA arrangement.

This study aims to understand the practices and rules of Sharia crowdfunding policies in Indonesia given the rapid growth of financial technology and the increasing importance of crowdfunding as a funding alternative for micro, small, and medium enterprises (MSMEs).

This study used qualitative methods, exploratory methods and literature studies for data collection. The focus is on understanding the regulatory environment and institutional framework that support Sharia crowdfunding in Indonesia.

Despite a specific law regulating Sharia crowdfunding, several authoritative institutions in Indonesia offer FinTech, crowdfunding and Sharia crowdfunding services. Some regulations have been issued, such as Bank Indonesia Regulation Number 19/12/PBI/2017 and Financial Services Authority (OJK) Regulation Number 37/POJK.04/2018, which was later amended to Number 57/POJK.04/2020. This study emphasizes the crucial role of OJK in providing security guarantees for implementing FinTech, including crowdfunding. At the same time, Sharia crowdfunding also follows fatwas issued by DSN-MUI.

This study describes Sharia crowdfunding policies in Indonesia and indicates that further research could delve deeper into specific cases and examine the impact of these policies on the growth and sustainability of Sharia crowdfunding.

This study underlines the need to enhance Sharia crowdfunding standards and to create rules that explicitly address this issue. This has implications for regulatory authorities, FinTech companies and MSMEs seeking to leverage Sharia crowdfunding.

This study suggests potential social implications, including a more inclusive financial system that complies with Islamic principles and supports MSMEs' growth.

This study is unique in its focus on Sharia crowdfunding policies in Indonesia, providing a comprehensive view of the regulatory landscape and existing institutional framework.