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INITIAL SOLUTION STRATEGIES FOR SIMULATED ANNEALING IN TWO-ECHELON OPEN LOCATION ROUTING PROBLEMS winarno; Redi, Anak Agung Ngurah Perwira
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 13 No. 2 (2025): In Process
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

Two-Echelon Open Location Routing Problem (2EOLRP) is a logistics problem model that combines two levels of distribution, namely the main distribution center (depot) and Secondary Distribution Centers (SDCs) which then serve customers. Vehicles available at the depot serve product requests from SDCs, while vehicles available at SDCs serve end customers. This paper presents a comparative analysis of two initial solution construction methods, Random Search (RS) and Nearest Neighbor Search (NNS), combined with a Simulated Annealing (SA) algorithm to solve the 2EOLRP. The quality of the starting solutions plays a key role in enhancing metaheuristic performance, including SA. We evaluate both methods based on their solution quality and computational efficiency. Benchmark datasets adapted from well-known Two-Echelon Location Routing Problem (2ELRP) instances are used for testing. The experimental results demonstrate that NNS generally provides better initial solutions leading to improved final results, while RS offers faster computational times. The findings offer valuable insights into the impact of initialization strategies on the overall performance of SA in two-echelon distribution systems.
Integrating Mental Health Literacy in Maritime Vocational Education: A Multiliteracy Pedagogical Framework for Indonesian Maritime Academies Winarno; Suprobo, Yok; Suranta, Natanael; Wati, Evita Ratna; Mariasa, I Made; Hidayah, Ferro
Tadris: Jurnal Keguruan dan Ilmu Tarbiyah Vol 10 No 2 (2025): Tadris: Jurnal Keguruan dan Ilmu Tarbiyah
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/tadris.v10i1.29260

Abstract

This qualitative study investigates the integration of mental health literacy into Indonesian maritime vocational education through multiliteracy pedagogical frameworks. Despite high prevalence of psychological challenges among seafarers—including isolation, depression, and elevated suicide risk—mental health competencies remain absent from maritime curriculum structures. Through semi-structured interviews and focus group discussions with 42 participants (maritime lecturers, veteran seafarers, and recent graduates), this research examines stakeholder perspectives on mental health literacy needs, multiliteracy pedagogical approaches, lecturer competency requirements, and veteran knowledge integration mechanisms. Findings reveal 92.9% recognition of mental health as critical competency but only 7.1% perceiving adequate curriculum preparation. Case study analysis and veteran testimonial presentations achieve 100% endorsement, while integration into Maritime English courses garners 88.1% support. Significant lecturer competency gaps are identified, particularly in responding to mental health disclosures (2.7-point gap). Results demonstrate that multiliteracy pedagogy offers culturally appropriate, feasible pathways for embedding mental health literacy within existing educational structures. The research provides evidence-based recommendations for BPSDMP curriculum developers and maritime educators regarding professional development priorities, veteran-academy partnership mechanisms, and institutional support requirements for sustainable mental health literacy initiatives that enhance seafarer psychological preparedness and workforce resilience.
OPPORTUNITIES AND CHALLENGES BENTENG PANCASILA CAMPUS AT SEBELAS MARET UNIVERSITY Sutimin, Leo Agung; Bramastia; Djono; Winarno; Rawanoko, Endrise Septina; Tarsidi, Deni Zein; Salsalova, Andrea
JURNAL SETIA PANCASILA Vol. 6 No. 1 (2025): Jurnal Setia Pancasila, September 2025
Publisher : PRODI PENDIDIKAN PANCASILA DAN KEWARGANEGARAAN STKIP PGRI SUMENEP

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Abstract

Sebelas Maret University Surakarta declared itself a Pancasila Fortress Campus, one of its objectives being to prevent the recurrence of events that undermined the Pancasila ideology in the past, including radicalism and intolerance; this was announced when UNS commemorated Pancasila Day on 1 October 2018. As a consequence of this declaration, UNS has constructed six places of worship located in a single area, namely: Mosques, Catholic churches, Christian churches, Buddhist temples, Hindu temples, and Chinese temples. This study uses qualitative methods, with data collection techniques using document studies or documentation, namely from books and articles related to the challenges of Pancasila as the ideology and foundation of the Republic of Indonesia.  In efforts to strengthen itself as a Pancasila Fortress Campus, there are several programs and activities that have been and continue to be implemented, including Pancasila Education lectures; Citizenship Education; and the establishment of the Pancasila Implementation Study Centre (PSPP). The challenges faced by UNS as a Pancasila Fortress Campus include individualism, market liberalism, radicalism, religious fundamentalism; the weakening of the practice and actualisation of Pancasila; and the lack of Pancasila role models.
Evaluation of the Validity of Air Kerma Reference Data for Calibration of Radiation Measuring Instruments Zain, Nuril Jannah; Winarno; Astuti, Suryani Dyah; Suhariningsih; Destiani, Reza
Indonesian Applied Physics Letters Vol. 6 No. 1 (2025): Volume 6 No. 1 – December 2025
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/iapl.v6i1.84055

Abstract

The calibration of radiation measuring instruments at the Health Facility Security Agency (BPFK) Surabaya requires accurate air kerma reference data to ensure the safety and radiation protection of workers. This study aims to validate the air kerma reference data obtained from radioactive decay calculations and direct measurements using standard measuring instruments. Air kerma reference data were obtained through two methods: direct measurement using standard measuring instruments and calculations using the radioactive decay formula. Measurements were conducted with various absorbers (1/10, 1/100, 1/1000) and without absorbers. The results showed that the air kerma values from direct measurements had low standard deviations, indicating consistent results. However, there was a significant relative deviation between the direct measurement data and the decay calculation data for absorbers 1/100 and 1/1000, exceeding the allowable deviation limit of ±20%. This deviation is caused by the ideal conditions assumed in the decay formula, which do not account for external factors such as temperature, pressure, and humidity. Therefore, the air kerma reference data from decay calculations for these absorber variations are not valid for use as calibration references. The proposed solution includes improving the decay formula by incorporating environmental and absorber correction factors, as well as regularly calibrating and verifying the measuring instruments.
Co-Authors A. K. Islami A. M. Fuah A. M. Fuah, A. M. A. Sunyoto Abdus Salam, Abdus Achmad Afandi, Achmad ADI BASHORY, KHARISMA Adiputra, Agung Agastya, Yoga Agusti Mardikaningsih AGUSTIE, TEO Agustin, Eva Inaiyah Ahmad Bashori Ahmad Junaidi Alfandi, Aril Alma, Ahmad Faizin Anak Agung Ngurah Perwira Redi Andrea Salsalova Annida Lathifa Riandy Putri Anthoni Arif P Arifianto, Deny Aril Afandi Ary Artanty Ashari Husen Ashari, Minanti Mayda Audina P Alhabsyi, Gina B. K. Sheehan Berlianisa, Kumala Bramastia C. D. Darmawan Chairul Andrian D. A. Astuti Dandung Wahyu Amrulloh Deddy Chrismianto Deden Ramdani DELLITA, WINDA Demon, Fransiskus Dominikus Destiani, Reza Dian Neli Pratiwi Djono DWI DAMAYANTI, ASTI Dwi Setiawati Radjak E. A. Syahrin Edeh Dike Mariske Eko Agus Srihanto, Eko Agus Elly Lestari Rustiati Endrise Septina Rawanoko Febriansyah, Muhammad Ferdy Rehan Pane H. Nuraini Handoko, Hendri Hari Pamungkas Hendik Murdiyanto Hery Sawiji Hidayah, Ferro Hieronymus Purwanta Hilhamsyah I Made Mariasa I. Nabilah Ika Mariyani Iknasius Lagu Imam Rofiki Indah Kurniawati Isnaini, Illahika Qurotul JULI SAPTA RAHITA, DWI Kartika Chrysti Suryandari Khusnul Ain Lantapi, Adriansyah Wuriadin Lantapi Leo Agung Sutimin Lestari, Septi Wahyu Machmud Al Rasyid, Machmud Maharani, Annisa Lidya Melandhany, Mareta Minanti Mayda Ashari Mintasih Indriayu Mudjia Rahardjo Muhammad Febriansyah Muhammad Hendri Nuryadi, Muhammad Hendri Muhammad Hufron Muhammad Kyodan Khalidzky Muhammad Nazmi Saputra Muhlisin Murdiyanto, Hendik Mushofi, Yuskhil N. C. Hartono Natanael Suranta Natasya Thesalonika Nobuo Funabiki, Nobuo Nursim Okto Risdianto M Pakombong, Vhalentio Pamorti, Ongke Ageng Paulus Rah Adi Pawitra Permatasari, Nindy Permatasari, Perwira Annissa Dyah Pipit Widiatmaka, Pipit Prastyo, Bayu Pratiwi, Dian Neli Prihantoro, Eko Priyambodo Pujiyanto Purnama Adi, Fadhil R Yogi Nugraha Raden Mohamad Herdian Bhakti Rahma, Zuyyina Rahman, Safri Ramadhani, Nadia Nur Ramli Rawanoko, Endrise Septine Reno Ismanto Rohman, Muchammad Nurur Salatnaya, H. Salsalova, Andrea Sandra, Shifa Septi Wahyu Lestari Septilia Regita Cahyani Shifa Sandra Siswanto Soegianto Soelistiono Sudari Sudarsono Sugeng Sholehuddin Suhada Suhada, Suhada Suhariningsih Sulaeman Suparman Suprobo, Yok Suryani Dyah Astuti Susilo, Yunus Sutimin , Leo Agung Sutimin, Leo Agung Syahrizal Syahrom, Ardiyansyah Syaiful Alam SYAIFUL RAMADHAN, AHMAD Syarifullah Bundang Syuhadah, Nurul Aisyah T. Suryati Tarsidi, Deni Zein Thesalonika, Natasya tifani Tri Murwaningsih Triuli Novianti Triuli Novianti, Triuli Triyanto V. A. Mendrofa VALDIANSYAH, RAKA WAHYU PRASETYO, YOGA Wahyudi, Edi Wati, Evita Ratna Widodo, W. D. Widya Noventari, Widya Wildan Fatchan Maulidin Y. C. Endrawati Yaqubi, Ahmad Khalil Yoga Duta Bartila Yonatan Yuliana Andriyani Yulianto, Fazri Yunardi, Riky Tri Yunita Maysyaroh Yuskhil Mushofi Zain, Nuril Jannah