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All Journal International Journal of Evaluation and Research in Education (IJERE) Jurnal Dedikasi AKSIOMA: Jurnal Program Studi Pendidikan Matematika Jurnal Edukasi Matematika dan Sains Edu Sains: Jurnal Pendidikan Sains dan Matematika Jurnal Gantang Al-Jabar : Jurnal Pendidikan Matematika Al Ishlah Jurnal Pendidikan JTAM (Jurnal Teori dan Aplikasi Matematika) JURNAL PENDIDIKAN SAINS DAN APLIKASINYA Jurnal Caksana: Pendidikan Anak Usia Dini Jurnal Review Pendidikan dan Pengajaran (JRPP) Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika Uninus Journal of Mathematics Educations and Science (UJMES) Assyfa Learning Journal Delta-Phi Jurnal Pendidikan Matematika Jurnal Penelitian Tindakan Kelas Revenue Journal: Management and Entrepreneurship Journal of Teaching and Learning Mathematics (JTLM) Indonesian Journal of Learning and Educational Studies Assyfa Journal of Islamic Studies Edutechnium Journal of Educational Technology Assyfa Journal of Farming and Agriculture
Usmiyatun Usmiyatun
Universitas Muhammadiyah Malang
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Operational Inefficiencies, Bottlenecks, and Poor Layout in Post-Harvest Processes as Barriers to Agro-Industry Productivity and Profitability: A Systematic Literature Review and Case Study Kurniawan, Rudi; usmiyatun, usmiyatun; Sulistyowati, Enik; Ardianik, Ardianik
Assyfa Journal Scientific Essay Vol 3 No 1 (2025): Assyfa Journal of Farming and Agriculture (November)
Publisher : CV. Bimbingan Belajar Assyfa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61650/ajfa.v3i1.618

Abstract

Serious challenges in the agro-industry—such as operational inefficiencies, process bottlenecks, and suboptimal post-harvest facility layouts—directly reduce productivity, product quality, and profitability. While numerous studies have examined agricultural process improvements, a significant empirical gap exists between 2022 and 2026 regarding the comprehensive integration of industrial techniques—particularly Lean Manufacturing, Six Sigma, and Discrete-Event Simulation (DES)—in the context of sustainable food systems. This study aims to identify post-harvest operational problem patterns and the most effective optimization approaches through a PRISMA-based Systematic Literature Review (SLR) and a cross-case study synthesis. Secondary data were collected from publications in Scopus, Web of Science, and Google Scholar from 2022–2026, with analysis including waste mapping, bottleneck evaluation, layout analysis, and process simulation. The SLR results (n=38 articles) indicate that key post-harvest bottlenecks include excessive cycle times, process queues, overhandling, non-linear layouts, and low digital integration. Case studies show that the combination of Lean–Six Sigma–DES can reduce lead time by 15–45%, reduce waste by 20–60%, increase OEE (Overall Equipment Effectiveness) by up to 18%, and increase profitability by 12–30%. This research confirms the significant contribution of industrial engineering in realizing a sustainable agricultural system, increasing supply chain efficiency, and optimizing the added value of the agro-industry, becoming a reference for MSMEs, farmers, and policymakers
Development of RME-Based E-Modules with Ethnomathematics Integration to Improve Graphic to Symbolic Transformation Skills in Junior High School Mathematics Putri, Alfiani Athma Athma; Wajid, Abdul; Irawan, Ruli; Usmiyatun, Usmiyatun
AL-ISHLAH: Jurnal Pendidikan Vol 18, No 2 (2026): In Progress June 2026
Publisher : STAI Hubbulwathan Duri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35445/alishlah.v18i2.7546

Abstract

Students often experience difficulty translating graphic representations into symbolic mathematical forms, indicating the need for learning resources that connect abstract concepts with meaningful contexts. This study aimed to develop an e-module based on Realistic Mathematics Education (RME) integrated with the ethnomathematics of rumah betang to improve students’ ability to transform graphic representations into symbolic representations. This research employed a development design using the ADDIE model, comprising analysis, design, development, implementation, and evaluation. The feasibility of the e-module was evaluated by material and media experts. Its practicality was examined through a small-group trial, while its effectiveness was tested in a large-group implementation using pretest and posttest scores. Expert validation indicated that the e-module was categorized as “very feasible” in terms of material and media quality. The small-group trial showed that the e-module was “practical” for use in mathematics learning. In the large-group trial, students’ average score increased from 63.92 on the pretest to 84.72 on the posttest. The N-gain score was 0.59, indicating a medium improvement, with an effectiveness percentage of 58.81%, categorized as moderate. The findings suggest that the RME-based e-module integrated with rumah betang ethnomathematics is feasible, practical, and moderately effective in supporting students’ representation ability. The e-module can be used by teachers as an innovative culturally contextualized learning medium and by students for independent or collaborative learning. Further studies may examine its effects on other mathematical abilities, such as critical thinking and problem solving.
Co-Authors Afnan, Muhammad Agus Setio Ahmed, Mohammedalameen Aji, Fauzan Bayu Alfiani Athma Putri Rosyadi Amaliyah, Tuti Zahrotul Anhar, Jannata Arif, Viky Risnanda Arshad, Imran Baiduri Baiduri Bausir, Umar Choirudin, Choirudin CICIK YUNI LESTARI Dewi Nurmalitasari Dwi Priyo Utomo Elli Kestoro Enik Sulistyowati Fatra, Maifalinda Fitriyah, Imamah Dien Hasanah, Diana Agustina Ilham Muhammad Ilham Muhammad In’am, Akhsanul Irawan, Ruli James, Mathew Lowa Karim, Samuel Khan, Shahid Laila, Alfi Rachma Nisfi Lili Dahliani Lilis Marina Angraini Lovat, Terence Minatun Nadlifah Mukhlis Rohmadi Naim, Muhammad Nasir, Muhammad Nastiti, Luvia Ranggi Niken Dwi Safitri Niswatun Hasanah Nurmalitasari, Dewi Nurul Septiana Olawale, Locus Son Paulo Vitor da Silva Santiago Phong Thanh Nguyen Putri, Alfiani Athma Athma Rahmad Sugianto Rahmad Sugianto Rani Darmayanti Retno Wahyu Arian Sah Ridina Sekaryanti Riswanto Riswanto Rudi Kurniawan Safitri, Niken Dwi salsabillah, Adinda Santiago, Paulo Victor da Silva Setio, Agus Siswahyudianto Siti Qomariyah Suciati, Nur Suharsiwi Suharsiwi Sungkawati, Endang Terence Lovat Umar Bausir Ummi Rosyidah, Ummi Viky Risnanda Arif Wajid, Abdul Yus Mochamad Cholily Zamzam, Rohimi