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A Comparative AHP Framework for Enhancing Urban Carbon Reduction Strategies in the Residential and Waste Management Sectors Hidayat, Taufiq; Santoso, Imam; Koentjoro, Maharani Pertiwi
HABITAT Vol. 37 No. 1 (2026): April
Publisher : Department of Social Economy, Faculty of Agriculture , University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.habitat.2026.037.1.3

Abstract

Purpose: Although residential and waste sector greenhouse gases from urban areas pose urgent challenges for medium-sized cities in developing countries, the latest mitigation studies tend to concentrate on metropolitan areas and sectors. Design/Methodology/Approach: This paper presents a new comparative Analytic Hierarchy Process (AHP) framework in which cross-sectoral residential and waste strategies come together on the basis of a multistakeholder decision-making model for medium-sized cities in developing countries. Utilizing Mojokerto City, Indonesia as a case study, five criteria emission reduction effectiveness, implementation cost, ease of implementation, public acceptance, and policy support were evaluated for seven mitigation options. We chose 10 purposively selected experts from academics, practitioners, policymakers, non-governmental organizations, and community groups to provide sources of data. Findings: The results show the separation of organic and inorganic waste, as well as processing organic waste, are the most important strategies due to their prominent mitigation effect, behavioral feasibility, and social acceptability. Technological-based and compliance-oriented initiatives ranked among the moderate to lower-ranking measures, as institutional and practical constraints dictate. Originality/Value/Novelty: This study is novel in its interdependency on comparative weighting among multistakeholder analyses which identifies trade-offs, preference divergences, and consensus patterns between actor groups, contributing to an adaptive and replicable priority-setting model for medium-sized cities aiming for inclusive, context-sensitive low-carbon transitions.
LEGAL PROTECTION FOR KOI FISH AUCTIONS ON WHATSAPP GROUPS AGAINST BID AND RUN Putra, Bogananta Pratama; Santoso, Imam; Kurnia, Tata
FOCUS: Jurnal of Law Vol 6 No 1 (2025): Focus: March Edition
Publisher : Faculty of Law Universitas 17 Augustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/focus.v6i1.744

Abstract

This study examines the legal protection for koi fish auction operators conducting transactions through WhatsApp Groups who are harmed by the “bid and run” practice, where auction winners fail to fulfill payment obligations. The research aims to analyze the adequacy of existing legal frameworks in protecting business operators in informal digital auction transactions. Using a normative juridical method supported by limited empirical insights from interviews with auction operators, this study finds that legal protection remains weak due to the absence of written agreements, lack of specific regulation on online auctions, and evidentiary difficulties in WhatsApp-based transactions. The study concludes that the Civil Code and the ITE Law have not been optimally implemented in this context. It recommends the use of electronic agreements and clearer regulatory recognition of non-platform digital auctions to strengthen legal certainty for business operators.
Systemic framework for coffee roasting decision support in Malang Regency using soft systems methodology Effendi, Mas’ud; Santoso, Imam; Astuti, Retno; Mahmudy, Wayan Firdaus
Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE) Vol 9, No 2 (2026): IN PROGRESS
Publisher : Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Malang Regency has many different types of land and coffee varieties in each sub-district. It spans from highland Arabica coffee in Poncokusumo, grown at 900 to 1,400 meters above sea level, to lowland Robusta coffee in Gedangan, grown at less than 300 meters above sea level. These differences make the green coffee beans have very different sensory profiles. However, the way people decide how to roast the beans is still mostly based on experience and cannot be easily shared. In this study, a seven-stage Soft Systems Methodology (SSM) was used to create a conceptual Decision Support System (DSS) framework that can recommend coffee roasting parameters. Data was collected through field observations and interviews with experienced roasters, farmers/farmer cooperative leaders, and staff from the Malang Regency Agriculture Office in all ten sub-districts. The SSM process resulted in several outputs, including a Rich Picture that shows six groups of actors and three main social and technical problems, a root definition using CATWOE that explains how unclassified green beans can be turned into roasting profile recommendations for each origin, a conceptual model with ten activities, and a gap analysis that found the biggest problems are the lack of formal roasting knowledge and the absence of a system to deliver recommendations to users. The proposed framework has a seven-layer DSS design that uses computer vision with edge computing to classify green bean quality and includes a knowledge base for each sub-district. It is made to work offline in rural areas with limited resources. The framework was tested using the Efficacy, Efficiency, Effectiveness, and Elegance (4Es) criteria. The results showed that SSM can be used as a structured and repeatable way to design agroindustrial DSS in tropical coffee-producing regions with many different stakeholders and limited infrastructure.
Co-Authors A.A. Ketut Agung Cahyawan W Abda Abda Abdul Haris Abdul Rahim Abdulah, Budiman Achmad Misbah Adhim, Muhammad Fauzul Afifah, Yunika Nisa Aghus Sofwan Agustina, Chintya Rizki Ahda Mulyati Ahmad Dhiyaul Haq Ainur Rofiq Aji, Ambyah Atas Ajub Ajulian Zahra Macrina Akhsan, Muh Al Azhari, Muhammad Fuady Ali Djamhuri Ali, Toni Saidun Amelia Syarfina Qisthi Amin Yusuf Andreastika, Kristantiya Andri Wardita Anggraini, Putri Nur Anik Herwati Ardaneswari Dyah Pitaloka Citraresmi Arif Hidayat Arif Julianto Sri Nugroho, Arif Julianto Sri Arifin Arifin Arul, Ramli Arul, Ramli Asmaul Mustaniroh, Siti Atmaka, Sri Dharma Cyntya Aunur Rofiq Mulyarto Azhari, Sri Rahayu Indah Azzahro, Mawaddah Baharuddin Baharuddin Basamekha, Shuhd Khaled Hood Choirun, Annisa Choirun, Annisa'u Choirun, Annisa’u Cicik Fauziya Dany Nugroho Saputro Dewa Putu Yohanes Agata L. Sandopart Dewi Liesnoor Setyowati Dhita Morita Ikasari Dodyk Pranowo Effendi, Mas’ud Endah Rahayu, Endah Erminawati Erminawati erminawati Erminawati Erminawati Etty Carolina Fabianus Marintis Faesal, Abiq Muhammad Farida, Siska Nifro'atul Farida, Siska Nifroatul Fatma Lestari Febrianty, Ersha Firmansyah , Hadi Fountain, Michael Jeremy Fuad Achmadi G. Gunawan Grace Karlina Permatasari Hadi Suyono Hamzah, Abdulah Nur Hariyanto, Dian Hastuti, Nur Windhi Helmi, M. Nurman Herdhata Agusta Hersulastuti, Hersulastuti Hidayat, Ditya Pramesti I Gusti Bagus Wiksuana Ika Atsari Dewi Irfa'i, Muhammad Irfansyah, Dicki Irwansyah Irwansyah Isnawati Isnawati Isnawati Jaja Suteja Jamaludin, Maun Jarot Prasetyo Juarsa, Juarsa Juliani, Ridha Karbito Karbito, Karbito Karouw, Barthe Khafizh Rosyidi Koderi Kumara Hadi, Danang Kurnia, Tata Lu'ayya, Naila Maulidina Lu’ayya, Naila Maulidina M. Amir Salipu Maharani Pertiwi Koentjoro Maharani, Haqia Sekar Makbul, Agung Mangku Purnomo Maulana Kamal Miftahurrahmah, Aisyah Miswanto, Miswanto Moh. Sidik Priadana Mohammad Bisri Muchlis Dwi Prasetiyo, Muchlis Dwi Muflihah Ramadhia Muhammad Imam Dani Putra Muhammad Wildan Aula Sabiq Muhidin Muhidin Mulyanti, Rita Yuni Murjito, Winarno Heru Nana Mulyana Nanang Suryadi Nasrullah Nasrullah Nety, Nety Nopianti, Putri Riski Noraida Noraida, Noraida Nurmaningtyas, Anggia Riani Nursam, Natalita Maulani NurSiaga, Rahmat Padilah, Sri Panji Deoranto Perdana, Adeev Nidya Perdana, Teguh Iman Prameswari, Puspa Ayu Indah Pranowo, Taufik Agung Pratiwi, Larang Priyanto, Agustinus Sugeng Priyono, Slamet Pujiawati, Lilis Purbonegoro, Jason Purwadi Purwadi Putra, Bogananta Pratama Putri, Rizka Aidina Quiko, Alfonso Sabatani R. Rizal Isnanto Rahima, Desiree Rain Rahmawati Rahmawati, Rahmawati Rahwamati, Rahwamati Rengganis Fitriani, Rengganis Retnaningsih, Lilis Retno Astuti Rheysa Permata Sari Riska Septifani Rizky Lutfian Ramadhan Silalahi, Rizky Lutfian Ramadhan Rodjani, Ines Hadianesti Roesmasari, Rindha Ayu Rusdiana Setyaningtyas Ruseno, Ndaru Saidun Ali, Toni Sari, Eva Novita Sa’adah, Miftahus Setianingtyas, Anna Febrianty Shobih Shobih Sholihun, Sholihun Sinaga, Adello Togario Siti Asmaul Mustaniroh Siti Asmaul, Siti Siti Handayani Siti Narsito Wulan Slamet . Sohri, Moch. Soma, Mukti Sri Harti Widyastuti Sri Kumalaningsih Sri Yulaikah, Sri St. Haerani, St. Sucipto Sucipto Sudirman, M. Iman Sukiswo Sukiswo Sukma Maharani Sulaiman Hamzani Sultoni, Raden Muh Supriatininingsih, Supriatiningsih Suranto, Much Suryaningsih, Fina Susanto, Sigit Susinggih Wijana Suwito Eko Pramono Syarifudin Syarifudin Syoni Soepriyanto Tania, Vika Taufiq Hidayat Teguh Dwi Prihartono Tirtasari, Maidaturrizky Triyono Usman Andrianto Usman Effendi Utari, Dewi Veithzal Rivai Zainal Viarawangi, Fani Maria Wafi'uddin, Izzum Wafi’uddin, Izzum Wahyul Amien Syafei Wahyuliana, Eka Wahyuni, Ayu Sri Wangsa Wati, Lela Nurlaela Wayan Firdaus Mahmudy Wega Trisunaryanti Widianto, Eri Widya Hari Pratiwi Wike Agustin Prima Dania Winanda, Dian Septyani Wulandari, Mey Yani, Achmad Yeni Yuliasia Yuli Christiyono Yustiani, Evira Bella Yusuf Wibisono Yusuf Wijanarko Zebua, Mercyana Trianne