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All Journal M A T H L I N E : Jurnal Matematika dan Pendidikan Matematika Tepis Wiring : Jurnal Pengabdian Masyarakat Logistica : Journal of Logistic and Transportation
Uvi Dwian Kencono
Universitas An Nasher
Humanities Education Environmental Science Mathematics Public Health Transportation

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Optimal Control of The Spread of COVID-19 in Jakarta Rizki Chika Audita Ariyani; Widowati Widowati; Uvi Dwian Kencono; Lucky Cahya Wanditra; Dhimas Mahardika
Mathline : Jurnal Matematika dan Pendidikan Matematika Vol. 11 No. 2 (2026): Mathline : Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/mathline.v11i2.1145

Abstract

SARS-CoV-2 is the virus that causes COVID-19. In Indonesia, the highest number of COVID-19 cases is in the Jakarta province. It is necessary to restrict the virus's transmission. This research purposes to determine optimal control strategies (self-prevention, vaccination, and cure) of the SEAIQHRD model to reduce disease spread. Optimal control analysis is solved utilising Pontryagin's Minimum Principle. In this study, numerical simulations were conducted using COVID-19 outbreak data from Jakarta province from March 1 to August 31, 2022. Based on the analysis results, the basic reproduction number ℜ0 = 2,1316. Since ℜ0 > 1 at the EE point, the COVID-19 spread model is asymptotically stable, indicating that the virus persists in the population. The application of control steps combining all three strategies was shown to reduce the subpopulations of exposed, infected, hospitalized, and deceased individuals. Simultaneous optimal control is more effective at controlling the spread than using a control step. The simultaneous implementation of optimal controls has proven an effective strategy for reducing COVID-19 transmission in Jakarta.
Collaboration, Agility, and Redundancy: Key Strategies for Managing Global Supply Chain Disruptions Uvi Dwian Kencono; Yakuttinah Marjan; Dimas Endrawan Putra; Ahnis Zulkarnain
Logistica : Journal of Logistic and Transportation Vol. 3 No. 3 (2025): July 2025
Publisher : Indonesian Scientific Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61978/logistica.v3i3.1064

Abstract

Global supply chains have become highly vulnerable to disruptions caused by pandemics, geopolitical conflicts, trade wars, and sustainability pressures. This narrative review synthesizes existing research on risk management strategies with a focus on resilience, collaboration, sustainability, and strategic intelligence. Literature searches were conducted in Scopus, Web of Science, and Google Scholar, covering studies published between 2010 and 2024. The findings highlight resilience strategies—such as redundancy, agility, and digitalization—as essential mechanisms for mitigating disruptions. Redundancy reduces operational vulnerabilities through buffer inventories and multiple sourcing, while agility enables rapid adjustments to volatile conditions. Digitalization further enhances resilience by improving real-time monitoring and decision-making. Collaborative governance and risk-sharing contracts strengthen supply chain networks by fostering trust and distributing risks equitably. Geopolitical events and the COVID-19 pandemic illustrate the fragility of global networks, emphasizing the importance of supplier diversification, localization, and technological preparedness. Sustainability-related risks, including environmental, social, and governance (ESG) issues, require integrated frameworks that align resilience strategies with ethical and regulatory imperatives. Strategic intelligence emerges as a dynamic capability that supports proactive adaptation and recovery. This review concludes that effective supply chain risk management requires integrated and adaptive frameworks combining resilience, collaboration, and intelligence. Policy support, investment in logistics infrastructure, and targeted strategies for small and medium-sized enterprises (SMEs) are critical for building sustainable and competitive global supply chains in an increasingly uncertain environment,
Penguatan PHBS dan Literasi Sains Siswa Madrasah Ibtidaiyah melalui Pembelajaran Berbasis Teknologi Interaktif Dhimas Mahardika; Rizki Chika Audita Ariyani; Uvi Dwian Kencono; Casidi; Iyan Sunandar; Sri Nuryani; Eka Safitri; Munawir Hamzah; Yusep Saepulloh
Jurnal Pengabdian Masyarakat: Tipis Wiring Vol 5 No 2 (2026): Tepis Wiring: Jurnal Pengabdian Masyarakat
Publisher : Fakultas Ekonomi dan Bisnis Unversitas Islam Raden Rahmat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/tepiswiring.v5i2.11197

Abstract

The development of the digital era among elementary school children presents challenges in the form of high use of gadgets for entertainment, a lack of understanding of healthy lifestyles, and the suboptimal use of technology as a learning tool at MI Al Munawar, Kepuh Village, Cirebon Regency. This community service activity aims to improve students' understanding of healthy lifestyles, basic science literacy, and the positive use of digital technology. The implementation method is carried out systematically and participatively through five stages: activity socialization; training and interactive education with simple experimental practices; the application of educational digital media; evaluation through pre-tests and post-tests; and mentoring to sustain the activity. The activity results showed an increase in understanding among 40 students across all assessment indicators. The highest increase occurred in the aspect of the use of educational digital technology at 51%. This activity shows that an interactive educational approach based on direct practice and digital media is very effective in shifting the function of gadgets from a means of entertainment to a productive learning medium. This activity is able to encourage the creation of clean and healthy living behaviors, as well as improve the scientific literacy of elementary school students in a sustainable manner
Co-Authors Casidi Dhimas Mahardika Dimas Endrawan Putra Eka Safitri Iyan Sunandar Lucky Cahya Wanditra Munawir Hamzah Rizki Chika Audita Ariyani Sri Nuryani Widowati, Widowati Yakuttinah Marjan Yusep Saepulloh Zulkarnain, Ahnis