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All Journal International Journal of Educational Narratives Journal of Moeslim Research Technik Research Psychologie, Orientation et Conseil Journal of Tecnologia Quantica Journal of Loomingulisus ja Innovatsioon Research of Scientia Naturalis Journal of Biomedical and Techno Nanomaterials Journal of Multidisciplinary Sustainability Asean
Marcus Tan
Duke-NUS Medical School
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Physics Social Sciences Other

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SUSTAINABLE INDUSTRIAL ENGINEERING: SYSTEMS OPTIMIZATION UNDER RESOURCE CONSTRAINTS Marcus Tan; Rachel Chan; Anauta Lungiding Angga Risdianto
Journal of Moeslim Research Technik Vol. 3 No. 2 (2026)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/technik.v3i2.3725

Abstract

The increasing pressure to integrate sustainability into industrial practices has led to the need for more efficient systems optimization models that address resource constraints. Traditional optimization models in industrial engineering have focused predominantly on maximizing efficiency and minimizing costs, often overlooking the long-term environmental and social impacts. This research explores the intersection of sustainable development and systems optimization under resource limitations, aiming to develop a comprehensive framework that balances economic, environmental, and social factors in industrial processes. The study employs a mixed-methods approach, combining literature review, case studies from various industrial sectors, and mathematical optimization models. The results demonstrate that the integration of resource constraints into industrial systems significantly improves both operational performance and sustainability outcomes. Industries, particularly in manufacturing and logistics, showed considerable improvements in production efficiency and reductions in energy consumption and material waste. The research concludes that resource-constrained optimization models can lead to more sustainable industrial practices without compromising economic efficiency. The findings provide a valuable contribution to the field of industrial engineering, offering a framework that can be applied across diverse sectors seeking to optimize their systems within the boundaries of available resources. Future studies should extend these models to include more complex industrial sectors and explore long-term sustainability impacts.
The Relationship between Teacher Digital Literacy and the Use of Technology in Learning Rachel Chan; Marcus Tan; Aditi Verma
International Journal of Educational Narratives Vol. 3 No. 2 (2025)
Publisher : Yayasan Pendidikan Islam Daarut Thufulah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/ijen.v3i2.2149

Abstract

Background. The integration of technology in education has become increasingly essential for enhancing learning experiences, yet the successful use of technology in teaching relies heavily on teachers’ digital literacy. Digital literacy refers to the ability to use, understand, and evaluate digital tools effectively, and it has been identified as a critical factor influencing the adoption and implementation of technology in the classroom. Purpose. This study investigates the relationship between teachers’ digital literacy and their use of technology in teaching practices. The primary objective is to assess how teachers’ proficiency in digital tools impacts their incorporation of technology into the learning environment. Method. A quantitative research design was employed, using surveys to collect data from 200 teachers across various educational institutions. Descriptive and inferential statistics were used to analyze the data, revealing a positive correlation between digital literacy and the frequency and effectiveness of technology use in the classroom. Results. The findings suggest that teachers with higher levels of digital literacy are more likely to utilize technology in diverse and innovative ways to support student learning. Conclusion. In conclusion, enhancing teachers’ digital literacy is crucial for optimizing the integration of technology in education, thus contributing to more effective and engaging learning experiences.  
BIODEGRADABLE SMART PACKAGING MATERIALS IN HALAL FOOD LOGISTICS: A REVIEW OF ENGINEERING INNOVATIONS Suhartin Dewi Astuti; Ava Lee; Marcus Tan
Journal of Moeslim Research Technik Vol. 2 No. 4 (2025)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/technik.v2i4.2350

Abstract

The integrity of the halal food supply chain is paramount, yet it faces significant challenges from potential cross-contamination and environmental concerns associated with conventional packaging. This review examines the critical engineering innovations at this intersection, focusing on materials and systems that ensure both halal compliance and ecological responsibility. The objective is to identify key technologies, assess their compatibility with halal principles, and highlight their potential to improve supply chain integrity and sustainability. A systematic literature review was conducted using major scientific databases, including Scopus, Web of Science, and Google Scholar. The selected literature was analyzed to identify material compositions, sensor mechanisms, and their functional applications in maintaining halal integrity. The review identifies several promising innovations, including the development of biopolymer-based films (e.g., PLA, starch, chitosan) integrated with pH-sensitive and microbial spoilage indicators. These smart systems can provide real-time monitoring of food freshness and detect potential non-halal contaminants, such as ethanol or porcine derivatives, without direct contact. The findings show a strong trend towards non-invasive sensor technologies that align with the principles of tayyib (wholesome and pure). Engineering innovations in biodegradable smart packaging offer a robust solution for enhancing the security and sustainability of halal food logistics.  
Family Intervention in Counseling Programs: A Quantitative Study of the Impact on Emotionally Disturbed Children Rini Ambarwati; Marcus Tan; Isabelle Ng
Research Psychologie, Orientation et Conseil Vol. 2 No. 2 (2025)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/rpoc.v2i2.1859

Abstract

Emotionally disturbed children face significant challenges that affect their psychological well-being, academic performance, and social interactions. Traditional counseling programs often focus solely on the child, neglecting the crucial role of family dynamics in emotional development. Family intervention in counseling programs has emerged as a promising approach to addressing these issues by involving caregivers in the therapeutic process. This study aims to evaluate the impact of family-centered counseling programs on the emotional well-being of children diagnosed with emotional disturbances. A quantitative research design was employed, involving 120 children and their families, recruited from three counseling centers. Participants were randomly assigned to either a family intervention group or a standard counseling group. Data were collected over 12 weeks using validated instruments, including the Child Behavior Checklist (CBCL) and the Family Adaptability and Cohesion Evaluation Scale (FACES). Statistical analyses included paired t-tests and regression modeling to assess the effectiveness of the interventions. The results indicated that children in the family intervention group showed significant improvements in emotional regulation, reduced behavioral issues, and enhanced family cohesion compared to the standard counseling group. These findings highlight the importance of incorporating family dynamics into counseling programs to achieve better outcomes for emotionally disturbed children.
SOCIALIZATION AND IDENTITY FORMATION: A DEVELOPMENTAL PERSPECTIVE IN THE DIGITAL AGE Ethan Tan; Marcus Tan; Ren Suzuki
Research Psychologie, Orientation et Conseil Vol. 3 No. 1 (2026)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/rpoc.v3i1.3537

Abstract

In the digital age, socialization processes and identity formation have become increasingly intertwined with digital platforms and technologies. The digital environment presents new opportunities and challenges in the development of self-concept and social interactions, which have significant implications for various developmental stages. However, there is limited research exploring how digital spaces influence identity formation, especially from a developmental perspective. This study aims to investigate how digital socialization processes impact identity formation across different age groups and developmental stages, focusing on the interaction between online and offline environments. A mixed-methods approach was employed, combining quantitative surveys and qualitative interviews with individuals from diverse age groups. The survey explored the frequency and nature of digital interactions, while the interviews provided in-depth insights into personal experiences with identity formation in digital spaces. The findings reveal that digital platforms significantly influence self-concept and identity development, with younger individuals more likely to engage in self-exploration through digital spaces. Digital socialization plays a critical role in identity formation, particularly in adolescence and early adulthood. Future research should focus on how digital interactions shape identity development over time and across different cultural contexts.
Quantum Metrology for High-Precision Measurement of Fundamental Constants Jaden Tan; Marcus Tan; Rachel Chan
Journal of Tecnologia Quantica Vol. 1 No. 4 (2024)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/quantica.v1i4.1683

Abstract

High-precision measurements of fundamental constants have an important role in modern physics and technology. Uncertainty in measurements using classical methods is a major obstacle in improving the accuracy and validation of physical theories. Quantum metrology, which makes use of the phenomenon of quantum entanglement and superposition, offers a solution to overcome these limitations. This study aims to evaluate the effectiveness of quantum metrology in improving the measurement accuracy of fundamental constants, such as Planck's constant and Newton's gravity. The research was conducted using an experimental design with quantum sensing-based devices, such as quantum interferometers and ion traps. The data were analyzed to compare the level of measurement uncertainty between classical methods and quantum metrology. Case studies were conducted in a microgravity environment to test the reliability of this technology under extreme conditions. The results showed that quantum metrology significantly reduced measurement uncertainty to two orders of magnitude compared to classical methods. The technology has also proven to be effective in extreme conditions, providing flexibility for applications outside of the laboratory. The conclusion of the study confirms that quantum metrology is able to overcome the limitations of classical methods and has great potential to support the development of global measurement standards in the future.  
Device-Independent Quantum Key Distribution Over Long-Distance Fiber Networks Using Entanglement Swapping Architectures Ava Lee; Marcus Tan; Baasandorj Gankhuyag
Journal of Tecnologia Quantica Vol. 2 No. 5 (2025)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/quantica.v2i5.3194

Abstract

Quantum Key Distribution (QKD) has emerged as a powerful solution for secure communication, relying on the principles of quantum mechanics to guarantee the security of transmitted keys. However, traditional QKD protocols are dependent on the trustworthiness of the devices used, which introduces vulnerabilities. Device-independent quantum key distribution (DI-QKD) eliminates this dependency, offering a higher level of security. This research explores the use of DI-QKD over long-distance fiber networks by incorporating entanglement swapping architectures to extend the reach and enhance the security of quantum key distribution systems. The objective of this study is to evaluate the feasibility of DI-QKD over long-distance fiber-optic networks, employing entanglement swapping as a means to mitigate photon loss and noise over extended distances. The research employs both theoretical modeling and experimental validation, simulating long-distance fiber links with quantum repeaters and entanglement swapping nodes. The results demonstrate that entanglement swapping significantly extends the distance over which secure DI-QKD can be achieved, maintaining low quantum bit error rates (QBER) and high key generation rates even at distances of 200 km. The findings confirm that DI-QKD is feasible over practical fiber networks, and entanglement swapping is a key enabler for long-distance secure quantum communication.    
Analysis of Factors that Drive Startup Growth in Indonesia Napat Chai; Marcus Tan; Thiago Rocha
Journal of Loomingulisus ja Innovatsioon Vol. 2 No. 6 (2025)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/innovatsioon.v2i6.1973

Abstract

The rapid growth of startups in Indonesia has become a significant driver of economic development, especially in the digital and tech sectors. Despite the increasing number of startups, understanding the factors that contribute to their growth remains a complex challenge. This study aims to analyze key drivers of startup success in Indonesia, focusing on external factors, internal strategies, and market conditions that influence their scalability. The primary objective of this research is to identify and analyze the critical factors that contribute to the growth of startups in Indonesia. It seeks to explore the role of innovation, funding, government policies, market demand, and networking opportunities in driving the expansion of new ventures. This study uses a mixed-methods approach, combining quantitative surveys of 100 startup founders and qualitative interviews with industry experts. Data analysis is conducted using descriptive statistics and thematic analysis to identify recurring themes and patterns in the factors that influence startup growth. The findings indicate that access to funding, government support, and a robust market demand are the most influential factors in driving startup growth. Additionally, networking and mentorship play critical roles in providing startups with necessary resources and strategic insights. Startups in the tech and e-commerce sectors show higher growth potential compared to those in other industries. The growth of startups in Indonesia is primarily driven by a combination of financial resources, strategic government initiatives, and market opportunities.
COMPUTATIONAL AND EXPERIMENTAL INSIGHTS INTO HYDROGEN STORAGE IN METAL-ORGANIC FRAMEWORKS (MOFs) Ardi Azhar Nampira; Ava Lee; Marcus Tan
Research of Scientia Naturalis Vol. 2 No. 4 (2025)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/scientia.v2i4.2390

Abstract

The transition to a hydrogen economy is critically dependent on the development of safe and efficient onboard hydrogen storage materials. Metal-Organic Frameworks (MOFs) have emerged as highly promising candidates due to their exceptionally high surface areas and tunable pore environments. This study aimed to combine computational modeling with experimental validation to elucidate the key structural factors governing hydrogen storage capacity in MOFs. A dual approach was employed, using Grand Canonical Monte Carlo (GCMC) simulations to predict hydrogen uptake in a series of MOFs with varying pore sizes and metal centers, followed by experimental synthesis and gas sorption analysis to validate the computational findings. The results revealed a strong correlation between the simulated and experimental data, confirming that both high surface area and optimal pore size (~10-15 Å) are crucial for maximizing physisorption. The GCMC simulations accurately predicted that MOFs with open metal sites exhibit enhanced hydrogen binding energies. This research concludes that a combined computational and experimental approach provides powerful predictive insights, confirming that tailoring pore geometry and introducing strong adsorption sites are key strategies for the rational design of next-generation MOFs for high-density hydrogen storage.    
Development of an Aptamer-Based Electrochemical Biosensor for Early Detection of Prostate Cancer Markers Sofia Lim; Marcus Tan; Ethan Tan
Journal of Biomedical and Techno Nanomaterials Vol. 1 No. 4 (2024)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/jbtn.v1i4.1811

Abstract

Prostate cancer is a leading malignancy in men, where early detection is critical for effective treatment. Current diagnostic methods, such as PSA tests, have limitations in sensitivity and specificity. To develop an aptamer-based electrochemical biosensor for the early detection of prostate cancer markers, aiming to improve diagnostic accuracy and speed. The study involved the design and optimization of aptamers through SELEX, integration with electrochemical sensors, and validation using prostate cancer cell lines and clinical samples. Instruments used include electrochemical workstations, HPLC, and mass spectrometry for characterization and evaluation. The developed biosensor demonstrated a detection limit of 0.1 ng/mL for PSA, with a response time of less than 10 minutes. High reproducibility was achieved with a coefficient of variation below 5%, and the biosensor showed significant specificity and stability in detecting PSA in various samples. The aptamer-based electrochemical biosensor offers a promising tool for the early detection of prostate cancer markers, providing higher sensitivity and specificity compared to traditional methods. Further clinical validation is necessary to confirm its efficacy and reliability in broader applications.
Co-Authors Aditi Verma Anauta Lungiding Angga Risdianto Ardi Azhar Nampira Ava Lee Baasandorj Gankhuyag Ethan Tan I Putu Astawa Isabelle Ng Jaden Tan Napat Chai Rachel Chan Ren Suzuki Rini Ambarwati Sofia Lim Suhartin Dewi Astuti Thiago Rocha