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All Journal Metode : Jurnal Teknik Industri Jurnal Teknik Industri Terintegrasi (JUTIN)
Nur Qidam Aliyanto
Universitas PGRI Adi Buana Surabaya
Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Analisis dan Perbaikan Tata Letak Proses Verifikasi Data Tagihan untuk Meningkatkan Efisiensi Kerja di PDAM Nur Qidam Aliyanto; Naufal Nur Alfian; Mukhamad Kurniawan; Ida Kusnawat Tjahjani
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 3 (2026): July
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i3.59890

Abstract

Perusahaan Daerah Air Minum is a regional public utility company that has implemented digital information systems to manage customer data, including the billing data verification process. Despite this digital adoption, the current verification workflow still contains a high proportion of Non-Value Added (NVA) activities due to the absence of automated error filtering, system integration, and manual data copying. This study aims to: (1) map the existing billing verification workflow using a Flow Process Chart (AS-IS); (2) quantify value-added (VA) and non-value-added (NVA) activities and calculate process efficiency; and (3) propose an improved process layout (TO-BE). Data were collected through direct observation of 2,110 customer records during an internship at PDAM. Results show that of seven workflow steps, only two (28.6%) are VA activities, while five (71.4%) are NVA. Time-based Process Efficiency of 58.5% falls below the lean ideal of 60–70%. Proposed improvements—including system integration, auto-fill functionality, and automatic error filtering—are projected to reduce verification time per record by 50–60% and raise the VA ratio to 75%.
Strategi Kompetitif Dua Pelaku Usaha Menggunakan Teori Permainan Zero-Sum Minimax Dan Strategi Campuran Muhamad Abdul Jumali; Laksana Damar Maulana Ridho Alamsyah; Nur Qidam Aliyanto
Metode : Jurnal Teknik Industri Vol. 12 No. 2 (2026): Jurnal Metode
Publisher : Universitas Muhammadiyah Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33506/mt.v12i2.5107

Abstract

A quantitative approach is necessary for making optimal decisions because two companies competing in the same market create conditions of strategic interdependence. The purpose of this study is to analyze the competitive strategies of two business actors using zero-sum   game theory using the minimax approach and mixed strategies. This study was conducted quantitatively and descriptively with two types of cases used. The first case is a game without a saddle point, which serves as a validation of the theory; the second case is price competition, which can be applied in a real business environment. The analysis was carried out by creating a Payoff matrix, calculating the probability of a mixed strategy, finding the minimum row and maximum column values, and using QM for Windows to validate the results. The results show that in the first case, no saddle point   is found, so the mixed strategy is the optimal solution with a probability of P (X1) = 0,8182, P (Y1) = 0,7273, and the game value is 3.4545. In the second case, a saddle point   is found in the combination of low-price strategies, making the pure strategy the optimal choice for both players. This finding demonstrates that zero-sum   game theory can provide a rational and objective basis for decision-making in situations of direct competition between two business actors.
Co-Authors Ida Kusnawat Tjahjani Laksana Damar Maulana Ridho Alamsyah Muhamad Abdul Jumali Mukhamad Kurniawan Naufal Nur Alfian