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Jurnal Optimasi Sistem Industri

JOSI
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Published by Universitas Andalas

ISSN : 20884842 EISSN : 24428795 DOI : -

Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering

Jurnal Optimasi Sistem Industri (JOSI) is a peer-reviewed journal that is published periodically (April and October) by the Department of Industrial Engineering, Faculty of Engineering, Universitas Andalas, Padang.

Arjuna Subject : -

Articles 394 Documents

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Pengembangan Aplikasi @Webplan untuk Perhitungan Waktu Standar pada Proses Perakitan Manual Agus Sutanto
Jurnal Optimasi Sistem Industri Vol. 9 No. 1 (2010): Published in 1st April 2010
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Karya tulis ini berkenaan dengan pengembangan perangkat lunak berbasiskan Web untuk perhitungan waktu kerja standar yang merupakan sebuah modul tambahan pada aplikasi perangkat lunak untuk perancangan sistem kerja berbasiskan Web atau yang diberi nama @WebPlan® yang sudah dikembangkan oleh penulis. @WebPlan ini merupakan integrasi dari beberapa modul untuk perancangan tataletak dan disain stasiun kerja secara virtual 3D. Beberapa modul sudah dirancang sebelumnya yaitu modul untuk visualisasi produk dan strukturnya sehingga dimungkinkan visualisasi yang interaktif untuk proses perakitannya. Sedangkan modul utama dalam @WebPlan ini adalah 3D Facilities Layout dan disain/layout stasiun kerja. Untuk tujuan ini juga sudah dibuat beberapa alat bantu yaitu model manusia 3D untuk beberapa persentil dan beberapa analisa dan checklist ergonomi. Pengembangan aplikasi @WebPlan ini untuk perhitungan waktu standar pada produksi serial merupakan suatu yang sangat diperlukan untuk menentukan waktu total yang diperlukan dalam memproduksi/merakit sebuah produk. Waktu total ini merupakan data penting dalam membuat konfigurasi stasiun kerja untuk pembuatan produk. Metoda Pengukuran waktu perakitan yang dipakai dalam hal ini adalah MTM-UAS (Universal Analysing System) yang sangat cocok untuk perakitan manual. Hasil perhitungan waktu proses perakitan ini divalidasi dengan proses perakitan yang sebenarnya dan tidak menunjukkan perbedaan harga yang cukup signifikan. Beberapa kemudahan yang didapat pada metoda ini adalah MTM-UAS menggabungkan beberapa gerakan dan tidak terlalu detail dibandingkan metoda pengukuran waktu lainnya. Akan tetapi memiliki hasil yang cukup mendekati hasil yang sebenarnya. Modul aplikasi perhitungan waktu standar ini merupakan bagian yang diintergrasikan nantinya dalam perancangan tataletak dan stasiun kerja secara virtual 3D

Total Tardiness Minimization in a Single-Machine with Periodical Resource Constraints Bruno Prata; Levi Ribeiro de Abreu; Marcelo Seido Nagano
Jurnal Optimasi Sistem Industri Vol. 21 No. 2 (2022): Published in October 2022
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

In this paper we introduce a variant of the single machine considering resource restriction per period. The objective function to be minimized is the total tardiness. We proposed an integer linear programming modeling based on a bin packing formulation. In view of the NP-hardness of the introduced variant, heuristic algorithms are required to find high-quality solutions within an admissible computation times. In this sense, we present a new hybrid matheuristic called Relax-and-Fix with Variable Fixing Search (RFVFS). This innovative solution approach combines the relax-and-fix algorithm and a strategy for the fixation of decision variables based on the concept of the variable neighborhood search metaheuristic. As statistical indicators to evaluate the solution procedures under comparison, we employ the Average Relative Deviation Index (ARDI) and the Success Rate (SR). We performed extensive computational experimentation with a testbed composed by 450 proposed test problems. Considering the results for the number of jobs, the RFVFS returned ARDI and SR values of 35.6% and 41.3%, respectively. Our proposal outperformed the best solution approach available for a closely-related problem with statistical significance.

Penentuan Sistem Kompensasi Berdasarkan Risk Assessment dan Performance Appraisal Karyawan (Studi Kasus: Petugas Operasional Pemadam Kebakaran Kota Padang) Difana Meilani; Nurmay Rahmah
Jurnal Optimasi Sistem Industri Vol. 15 No. 2 (2016): Published in November 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Risk is a possibility of the occurrence that may affect the achievement of objectives. Risk can give positive or negative effect. One of the jobs that have a high risk is firefighter job. Furthermore, a firefighter who are disciplined, responsible, and good in team work, they must be given a reward for their motivation. Therefore, the compensation that they get is equal with the potential risk and working achievement. The compensation of the risk and achievement is included in the extra payment of dangerous work (hazard pay) and bonus based on working achievement of an employee (merit pay). Comparing to the old system, the compensation system will increase the firefighters' income from Rp 900.000 to Rp 1.297.280 every month. The addition will also increase the budget of Damkar from Rp 550.800.000 to Rp 793.935.156 every year.

Perbaikan Pengelolaan Pergudangan Melalui Penerapan Sistem Informasi Pergudangan di CV. ABB Hery Hamdi Azwir; Oktavia Patriani
Jurnal Optimasi Sistem Industri Vol. 16 No. 1 (2017): The Improved JOSI is Published in May 2017
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

CV ABB is a medium scale car rental company which manages around 150 vehicles consists of small car (sedan or MPV) until large bus. To supporting the maintenance of all vehicles, they build a warehouse for spareparts and tools. Unfortunately, the management of warehouse does not have a good governance because all records done manually. This situation creates very high risk for data manipulation because manual record method is done by warehouse officer, lost of spare part in warehouse, counterfeit receipt, and no system to control spare part in warehouse. An improvement need to be done by implementing a warehouse management information system to overcome this problem. By applying information system analysis and design concepts and implementing through the application of PHP7 and MySQL, the new system can control all spare part in warehouse including incoming and outgoing spare part, PIC who requests the spare part, checking stock of spare part in the warehouse and stock out used by finance to make purchase order, spare part report from supplier and spare part request report. This system is also able to help finance to create purchase order and get approval from the user in order to make the process is more transparent and accountable.

Analisis Pengendalian Kualitas pada Engine Boss Drive Face K44F dengan Metode Six Sigma di PT. Sparta Guna Sentosa Prima Fithri; Niffy Eri Yeni
Jurnal Optimasi Sistem Industri Vol. 15 No. 2 (2016): Published in November 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Industrial competition in Indonesia is getting strict. One of the important factor to win this competition is the quality level of the product produced. Production process in PT. Sparta Guna Sentosa generally produces defect products. Part that generate most of the defect products is Boss Drive Face K44F which the demand of this part for each period is high enough. Hence, the quality control using the Six Sigma method is needed to decrease the defect products. The Six Sigma is a method to analyzes the problem with DMAIC (Define, Measure, Analyze, Improve, and Control). The results showed that the main defect that will be priority of problem solving is the length which is below the specifications about 40 ~ 40.01 mm and then the solution of problem is designed.

Supply Chain Performance Measurement Framework for Construction Materials: Micro Meso Macro Moh Nur Sholeh; Mochamad Agung Wibowo; Naniek Utami Handayani
Jurnal Optimasi Sistem Industri Vol. 19 No. 2 (2020): Published in October 2020
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Productivity is a challenge in the construction industry, commonly initiated by fragmentation. In addition, some work levels have been identified, including the micro, meso, and macro. However, the construction supply chain is one of the possible solutions adopted to increase productivity. The purpose of this study, therefore, is to develop a framework for measuring supply chain construction performance at the micro, meso, and macro levels. These respective stages are tiered from the bottom to the top level as a supply chain management concept. Furthermore, a design for the supply chain performance measurement framework is created, followed by formulation with KPI, and the consequent application in the project. Therefore, performance is evaluated based on the construction materials, as a large resource. The results identified the supply chain performance at the micro-level as the basis for possible measures between contractor and supplier, using the SCOR. However, the emphasis was made on the strength of construction companies with large suppliers at the meso level. Meanwhile, the macro-level includes the accumulation of related measurements from micro as well as meso, and are consequently used to define the relationship between construction actors at the national level.

Model Kebijakan Perkebunan Nilam di Pasaman Barat dengan Pendekatan Sistem Dinamis Dina Rahmayanti; Rika Ampuh Hadiguna Hadiguna; Santosa Santosa; Novizar Nazir
Jurnal Optimasi Sistem Industri Vol. 18 No. 1 (2019): Published April 2019
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

This study aims to design a model by providing several policy alternatives that are useful to assist the government in determining appropriate policies in increasing patchouli oil production from the supply aspect. The supply to be studied is patchouli plantations. The plantation is one of the important aspects affecting patchouli oil production. The choice of alternatives is based on testing alternative policies on a computerized model. Patchouli plantation models are made in line with real systems using system dynamics. From the results of the study, there are several policy alternatives that can be taken by the government, policies related to land expansion and conversion, policies related to increasing agricultural production, policies related to human resource improvement, policies related to agricultural equipment assistance and policies related to the use of superior seeds in plantations.

How Organizational Culture Moderate the Effect of Total Productive Maintenance Practice on Organization’s Operational Performance? Evidences from Indonesian Mining Industry Nasar Buntu Laulita; Agustinus Setyawan
Jurnal Optimasi Sistem Industri Vol. 20 No. 2 (2021): Published in October 2021
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

The industry needed a system to support its operation when most of the processes were done by equipment or machines. Total Productive Maintenance (TPM) was a system to ensure all equipment or machines run in optimal performance for long period by fully supported by top management until the bottom level. Implementation of this system in the mining industry was still seldom due to some factors and organizational culture was one of the reasons. The purpose of this research was to analyze the influence of TPM implementation on operational performance by moderating the effect of organizational culture in the mining industry by using a two-step approach of structural equation model (SEM). The research type was under explanative research with hypothesis testing from primary data that was obtained from distributing questionnaires and direct interviews in the field which was analyzed by using Lisrel 8.7. This research showed that the construct of TPM has a significant impact to influence operation performance directly in the mining industry with a t-value of 3.54 and organization culture also increases the significance by moderating effect with t-value of interaction 5.28 was higher than 1.96 while organizational culture was not significant to influence operational performance directly that was showed by t-value 1.22. This research had a novelty for studying TPM practice in Indonesian mining by using SEM to analyze the moderating effect of organizational culture. The managerial implication of this research was a guideline for decision-makers to implement TPM by considering developing, group, hierarchical, and rationale culture to improve operational performance in the Indonesian mining industry.

Sistem Peringatan Dini untuk Mendeteksi Lifetime Sparepart pada Mesin TR OSAWA Adi Nugroho; Yahri Nastangin
Jurnal Optimasi Sistem Industri Vol. 16 No. 2 (2017): Published in October 2017
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Maintenance is a very important activity to keep an equipment always at its best condition. This research aims to create an early warning system/ lifetime spare parts detector of Nissin Kogyo Batam (NKB)Company’sTR Osawa machine by adopting PLC (Programmable Logic Controller). PLC is used to automatically calculate the lifetime spare parts of TR Osawa machine. PLC will shut down the machine if it detects that lifetime spare parts have reached the specified setting standard (380-400 k pcs). As a result, PLC machine can provide more accurate results than manual counting.

Analisis Penggunaan Alat dan Teknik Pengendalian Mutu dalam Penerapan Sistem Manajemen Mutu pada Perusahaan Karet Bersertifikat ISO 9001:2008 Nofriani Fajrah; Nilda Tri Putri
Jurnal Optimasi Sistem Industri Vol. 15 No. 2 (2016): Published in November 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

The increasing competition in the global market and high consumer expectations for quality products, encourage companies to be able to produce quality products which meets international standards. One of the activities in improving quality that conform to product specifications is applying appropriate quality control system involving all aspects of the company that are integrated with the standard ISO 9001: 2008 as a guide. However, the rubber industry in West Sumatra still faces obstacles in the implementation of quality control techniques and tools of as experienced by ABC and XYZ. This study aimed to evaluate the application of quality control tools and techniques in the manufacturing company which is certified ISO 9001: 2008, ABC and XYZ. This research was conducted by calculating the value of DPMO (Defect Per Million Opportunities). Based on the results found that the two companies have different DPMO value. PT ABC obtained by 5,2σ sigma level from DPMO value of 94.33 for the types of defects whitespot and sigma level of 4,2σ of DPMO value of 3365.096 to defect type of metal, while the XYZ obtain sigma level of 5,3σ from DPMO value of 728.697 for the types of defects whitespot and sigma level of 4,8σ of DPMO value of 425.441 for the type of metal defects. From the analysis it can be concluded that the two companies have not been effective in applying the techniques and tools of quality control in accordance with the standards ISO 9001: 2008 in order to achieve continuous quality improvement. This is indicated by the key success factor of the implementation techniques and tools of quality control is not applied appropriately in achieving continuous quality improvement.

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Home Page

OAI Link

Editorial Team

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Contact Name Rika Ampuh Hadiguna

Contact Email hadiguna@ft.unand.ac.id

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Location Kota padang, Sumatera barat INDONESIA

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Contact Name
Rika Ampuh Hadiguna

Contact Email
hadiguna@ft.unand.ac.id

Phone
-

Journal Mail Official
hadiguna@ft.unand.ac.id

Editorial Address
-

Location
Kota padang,

Sumatera barat

INDONESIA