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Numerical Solutions for Convective Boundary Layer Flow of Micropolar Jeffrey Fluid with Prescribe Wall Temperature Rawi, Noraihan Afiqah; Mohd Zin, Nor Athirah; Khalid, Asma; Mohd Kasim, Abdul Rahman; Mat Isa, Zaiton; Shafie, Sharidan
Journal of the Indonesian Mathematical Society VOLUME 26 NUMBER 3 (NOVEMBER 2020)
Publisher : IndoMS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jims.26.3.553.286-298

Abstract

The steady two dimensional convective boundary layer flow of micropolar Jeffrey fluid past a permeable stretching sheet is studied in this paper. The governing boundary layer equation in the form of partial differential equations are transformed into nonlinear coupled ordinary differential equations and solved numerically using an implicit finite-difference scheme known as Keller-box method. The effects of Prandtl number, Deborah number, and material parameter with the boundary condition for microrotation, n = 0 (strong concentration of microelements) on the velocity, microrotation, temperature profiles as well as the skin friction and heat transfer coefficients are presented and discussed. An excellent agreement is observed between the present and earlier published results for some special cases. The results revealed that, the effect of Deborah number and stretching parameter are increased the heat transfer coefficient while the opposite trend is observed for the effects of material and velocity slip parameters. It was also observed that, the values of skin friction increased with the increment on the values of all studied parameters.
Campus Safety Riding: Establishing A Safe Campus Traffic Zone Rimawati, Eti; Nugroho, Bayu Yoni Setyo; Nurmandhani, Ririn; Fani, Tiara; Suhat; Khalid, Asma
Jurnal Ilmiah Pengabdian Masyarakat Bidang Kesehatan (Abdigermas) Vol. 3 No. 2 (2025): Jurnal Ilmiah Pengabdian Kepada Masyarakat Bidang Kesehatan (Abdigermas)
Publisher : CV Media Inti Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58723/abdigermas.v3i2.436

Abstract

Traffic-related accidents involving university students, particularly those aged 18–25, have become a growing concern in Indonesia, with many incidents occurring due to inadequate infrastructure and lack of traffic discipline in densely populated campus environments. This community service program was initiated by Universitas Dian Nuswantoro (UDINUS) in Semarang to address these challenges through the establishment of a “Campus Safety Riding Zone.” The program aimed to increase road safety awareness, promote safe behavior among students and residents, and improve campus-area traffic infrastructure. Activities included coordination with local authorities, painting red-marked safe zones and zebra crossings, installing speed limit signs (30 km/h), and distributing an educational pocketbook titled “Crossing Etiquette on Campus” The intervention area, located on Nakula I Street, was selected due to its high traffic volume between the subdistrict office and UDINUS Building A. Post-intervention observations indicated that drivers generally reduced their speed when entering the safety zone, although issues like improper parking persisted. The initiative demonstrated that a combination of infrastructure enhancement, community education, and multi-stakeholder collaboration can effectively foster a safer traffic culture in university environments. This model offers a replicable framework for other higher education institutions to support student and pedestrian safety through community-based strategies.
The Influence of the Ease of Use of the JMO Application on the Satisfaction and Loyalty of BPJS Ketenagakerjaan Participants Nainggolan, Mikha Zefanya Nainggolan; Tarigan, Helda; Hutagaol, Eca Nehemia Bregin; Malau, Agrien Yolanda Romagina; Pahlevi, Habieb; Khalid, Asma; Marini, Yushita
Journal of Digital Scholarship in Archives and Information Vol. 1 No. 1 (2025): Journal of Digital Scholarship in Archives and Information
Publisher : CV Media Inti Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58723/jdsia.v1i1.23

Abstract

Background of study: The digital transformation of public services in Indonesia has prompted institutions like BPJS Ketenagakerjaan to adopt technology-based platforms to enhance accessibility and efficiency. One such initiative is the Jamsostek Mobile (JMO) application, designed to provide participants with self-service access to essential features such as checking balances and submitting claims. The perceived ease of use of such platforms plays a critical role in determining user satisfaction and long-term engagement. Aims and scope of paper: This paper aims to analyze the influence of the perceived ease of use of the JMO application on user satisfaction and loyalty among BPJS Ketenagakerjaan participants. The scope of the study is conceptual, focusing on the theoretical relationships between ease of use, satisfaction, and loyalty within the context of digital public services. Methods: This study employs a conceptual literature review method based on the Technology Acceptance Model (TAM). Data were sourced from peer-reviewed journals, reports, and previous research published between 2021 and 2025, using keywords such as “ease of use,” “user satisfaction,” “loyalty,” and “digital public services.” Result: The findings indicate that intuitive design, clear navigation, and accessible features significantly influence user satisfaction. In turn, satisfaction strongly contributes to user loyalty. However, external factors such as digital literacy, service responsiveness, and internet infrastructure also moderate these relationships. Conclusion: To ensure the sustainability of the JMO application, BPJS Ketenagakerjaan must continuously improve usability, technical infrastructure, and user support systems. Enhancing ease of use is essential not only for increasing satisfaction but also for fostering long-term user loyalty in digital public services.