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All Journal JURNAL SISTEM INFORMASI BISNIS Jurnal Surya Masyarakat
Harahap, Adhina Rizkillah
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Religion Humanities Computer Science & IT Economics, Econometrics & Finance Engineering Environmental Science Public Health

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Fuzzy Piecewise-objective Programming Approach for Integrated Supplier Selection and Production Planning Problems Considering Discounts and Fuzzy Parameters: the Static Case Harahap, Adhina Rizkillah; Sutrisno, Sutrisno; Tjahjana, Redemtus Heru; Widowati, Widowati
Jurnal Sistem Informasi Bisnis Vol 15, No 3 (2025): Volume 15 Number 3 Year 2025
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/vol15iss3pp347-353

Abstract

In the manufacturing and retail sectors, the challenge of supplier selection revolves around efficiently allocating the necessary amount of raw materials to each supplier to minimize procurement costs. Concurrently, production planning focuses on maximizing output. To achieve maximum revenue, decision-makers must make optimal decisions in both areas. This paper introduces a new mathematical model, falling within the fuzzy piecewise programming domain, to support decision-making in supplier selection and production planning. It addresses integrated supplier selection and production planning issues, incorporating discounts and fuzzy factors. The aim is to optimize supply chain performance, ultimately maximizing the production activity profit. The model accommodates scenarios involving multiple raw materials, suppliers, products, and buyers. Through numerical experiments, the effectiveness of the proposed model is evaluated, demonstrating its ability to provide the optimal solution. Thus, it can be readily applied by industry decision-makers and managers.
Pembelajaran Integral Tak Tentu Menggunakan Articulate Storyline di MA Miftahussalam Wijayanti, Shofiyana Noor; Harahap, Adhina Rizkillah; Paramita, Arum Qurrotulaini Pradjna; Sunarsih, Sunarsih; Tjahjana, Heru
Jurnal Surya Masyarakat Vol 7, No 2 (2025): Mei 2025
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jsm.7.2.2025.227-231

Abstract

Mathematics is often considered a difficult subject and is of little interest to students, which results in students having difficulty learning independently outside of school. The difficulty of class XI students in understanding mathematics material is the background for the need to use new technology, namely articulate storylines, so that mathematics learning is more innovative and interactive. This community service activity is divided into 2 stages, namely the preparation stage and the implementation stage. In the preparation stage, the community service team conducted interviews with class XI mathematics teachers at MA Miftahussaam to find out what material was still difficult for students to understand. The second stage of this community service activity is the implementation stage which includes a pre-test, providing learning companion modules, playing the Articulate Storyline video, and post-test. The results of community service regarding the use of Articulate Storyline media at MA Miftahussalam show that the average pre-test score of 25 students is 42.2. This average value shows that the level of students' understanding ability and interest in learning about Indefinite Integral material is still below the average standard, namely less than 50. Meanwhile, the average post-test score of 25 students is 72.2. This average value shows that the level of students' understanding ability and interest in learning about Integral Uncertain material has reached the standard value, namely more than 70. Meanwhile, if calculated using percentages, the percentage increase in value from pre-test to post-test is 71.09%. This percentage level can be stated to be quite good.
Co-Authors Paramita, Arum Qurrotulaini Pradjna Redemtus Heru Tjahjana Sunarsih Sunarsih Sutrisno, Sutrisno widowati widowati Wijayanti, Shofiyana Noor