cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
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
Jurnal Optimasi Sistem Industri
Published by Universitas Andalas
ISSN : 20884842     EISSN : 24428795     DOI : -
Core Subject : Science, Engineering,
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
 29   30   31   32   33 
Optimalisasi Proses Perakitan Pesawat Tanpa Awak dengan Metoda Critical Path Methods (CPM) Dendi Adi Saputra M; Eka Satria; Gusman Arif Pandy
Jurnal Optimasi Sistem Industri Vol. 15 No. 1 (2016): Published in March 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v15.n1.p87-92.2016

Abstract

The manufacturing of Unmanned Aerial Vehicles (UAV) requires a design process that involves the design of aircraft’s components such as fuselage, wing, horizontal stabilizer, vertical stabilizer, ailerons, elevators, tail, and wing. The process takes a long time. Therefore, the distribution of structural works based on their characteristics and classifications by considering their design attributes and manufacturing processes is required. This research aims to find the optimal time and critical path of the assembly process of an UAV based on product work breakdown structure (PWBS) and critical path method (CPM). The result reveals that the optimal assembly time is 139 minutes. Finally, the application of product-oriented structural work distribution and the optimization of the assembly activities involved in the critical path successfully minimize the duration of the assembly process.
Pengendalian Persediaan Primary Items dalam Logistik Konstruksi Lady Lisya; Rika Ampuh Hadiguna
Jurnal Optimasi Sistem Industri Vol. 15 No. 1 (2016): Published in March 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v15.n1.p93-104.2016

Abstract

Construction logistics are activities that consist of ordering, storage and transportation of materials of construction projects. Storage material is logistics activity that ensure the availability of materials in project site. Generally, material storage activities have been conducted at the project site. Logistics construction is aimed to support the project activities that the completion schedule has been set. Construction logistics issues is determining the schedule of ordering materials so that the project can be implemented on schedule. The purpose of research is to determine the optimum ordering period for the primary items on the main building structure construction and designing inventory control cards as a mechanism for monitoring procurement of materials. This research has been obtained optimal ordering period for the primary items of main building structure with elements of the work using Fixed Period Requirement method. Inventories were already meet the material requirement of each period. Material management has been conducted based grouping approach as many as 31 groups. In addition, this research has proposed the inventory control cards as an instrument for material procurement monitoring. The implications of inventory control cards are coordinate contracting parties with vendors to plan the replenishment of materials to meet the work schedule. Further research can be developed with other aspects such as integrated material order system between contractors and vendors to consider the safety stock. In addition, the information system for planning material is an important consideration for construction projects with large scale so that the companies can plan primary items inventory and other materials in the projects completion more easily, quickly and accurately.
Model Prediksi Prilaku Kerja Aman Industri Kreatif Batik Tulis Sumenep Nachnul Ansori; Trisita Novianti; Fitri Agustina; Ahmad Shodiqul Ma’ruf
Jurnal Optimasi Sistem Industri Vol. 14 No. 2 (2015): Published in October 2015
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v14.n2.p193-203.2015

Abstract

Sumenep’s hand Batik is one of best practice in Madura. Located in Pekandangan BaratVillage, Sumenep Regency. Production activities done manually and many hazards foundthroughout overall processes. The aime of this research is finding prediction model of safetywork behavior as the response by analyzing factors which influence safety work behaviorsignificantly. Observation executed by 80 respondents, the model used multivariate linierregression. The result obtained that knowledge variabel and protective personal equipmentare significant. Meanwhile, perception and communication are not significant. Finally, modelof safety work behavior found two variables such worker’s knowledge and protectivepersonal equipment which determination coeficient of model is 15.9%.
Pengukuran Kepuasan Kerja Karyawan APLP & A PT Semen Padang (PT X) Shelly Nolandari; Henmaidi; Alizar Hasan
Jurnal Optimasi Sistem Industri Vol. 14 No. 2 (2015): Published in October 2015
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v14.n2.p204-225.2015

Abstract

Thoughts on employee satisfaction arise because the company believes its employees have a high level of satisfaction will result in a better level of productivity, work more accurate, the fewer the number of absences and higher loyalty than employees with low satisfaction levels.Company's with good productivity will grow and increase revenue. PT Semen Padang has several subsidiaries and affiliates like PT X. PT X will measure employee satisfaction with the company's expectations are always making changes that sustainable about employee satisfaction because companies believe that employee satisfaction level of its high yield levels better productivity, work more accurate, the number of absences are fewer and loyalty higher than employees with low satisfaction levels. Companies with good productivity will experience growth as indicated by the increase in revenue, in line with the increase in the welfare of the employees. PT Semen Padang has several subsidiaries and affiliates PT X. PT Xwill measure employee satisfaction with the Company's expectations.
Perancangan Purwarupa Sistem Pengendalian Kualitas Pengukuran Dimensi Produk Terotomasi Ikhwan Arief; Rahmat Fajri Fajri
Jurnal Optimasi Sistem Industri Vol. 14 No. 2 (2015): Published in October 2015
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v14.n2.p217-226.2015

Abstract

The production process is one of the several main activities in industries. The process followed by quality control to achieve expected final products. Products' conformities to design specification can be achieved through direct measurement. However, not all measurements can be done directly while the process is running. Inconformities to product's design specification could result in unfunctional or rejected products. This will render producers into losing their profits. Technology plays a major role in simplifying products' measurement processes. Advancement in technology made it possible to automate measurement processes and will also make it possible to do during the production process in achieving expected quality control as early as possible. The quality control yield measurements in products'lengths, widths and depths/ heights which will control products' dimension and generate quality control chart. The proposed prototype will allow measurements of product dimension and data acquisition directly during the process without disrupting on going processes.
Usulan Strategi Pengembangan Industri Pengolahan Kelapa Skala IKM di Kabupaten Indragiri Hilir Khairul Ihwan; Nilda Tri Putri; Jonrinaldi
Jurnal Optimasi Sistem Industri Vol. 14 No. 2 (2015): Published in October 2015
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v14.n2.p227-237.2015

Abstract

The majority of the population in Indragiri Hilir (Inhil) already rely on palm plantations as the main income. They have already sold in the form of coconut oil and copra round with a relatively low price and is unable to provide a decent life. It is increasing because of the low level of productivity of coconut plantations and commercial systems that are less profitable for farmers. While in other areas of the coconut is a commodity that can be processed into a wide range of high-value products with simple technologies that can be done by small and medium industries. So, we need development strategies IKM-scale oil processing industry which is able to increase the income of coconut farmers in the district of Inhil. Based on the results of research conducted by the method of SWOT analysis produced 23 alternative strategies of the development of the SME scale oil processing industry in Kabupaten Inhil ie three strategies from SO, nine strategies from WO, seven strategies from ST, four strategies from WT. Based on the results of the weighting using Analytical Network Process (ANP) on any alternative strategy, Strategy SO-2 namely "Guaranteeing the purchase of products manufactured by the community or the SME by the government and the government must provide the processing industry continued to improve the quality standards that prompted the market to products produced by the community/SME "is a priority under the development strategy of IKM-scale oil processing industry in the District Inhil.
Penentuan Interval Waktu Perawatan Komponen Kritis pada Mesin Turbin di PT PLN (Persero) Sektor Pembangkit Ombilin Taufik; Selly Septyani
Jurnal Optimasi Sistem Industri Vol. 14 No. 2 (2015): Published in October 2015
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v14.n2.p238-258.2015

Abstract

Electrical energy requirements in Indonesia annually increase in line with economic growth and an increase in population. So, PT PLN (Persero) have to be able to fulfill the public demands for electrical energy. One of the power generation existed is Steam PowerGeneration. The condition of power generation depended on the maintenance, so, well maintenance made power plant operated at ease condition. Production process in SteamPower Generation of Ombilin used a closed cycle or continuous process. If a machine or an equipment damaged, it will stop the whole function. In the production process, the company involved several main engines are boiler, turbine, condenser, and generator. But the damage often occurs in turbine engine which caused the generation power in Steam PowerGeneration of Ombilin can not operate. Therefore, it needs a maintenance action of machinery/equipment to be able to prevent the damage. The right strategy to keep the engine operating is determining the optimal maintenance interval of equipment for minimizing downtime.The stages of this research begin by determining the critical engine with Criticality Analysis method. Then, the determination of the critical components using Pareto diagram. Then, the determination of the probability density function (pdf) and the reliability of critical components. After that, the determination of maintenance intervals of the critical components by using the criterion of minimizing the downtime that will be used to make maintenance scheduling.Based on the processing data has been done, it was found that the critical engine is a turbine engine with a total value is 44 and the critical components of a turbine engine are membrane turbine, bearing and turning gear with the examination time interval for each critical component are 960.48 hours (40 days), 908.57 hours (37 days) and 1150.28 hours (48days). While the preventive replacement intervals for components of turbine membrane is after operating for 3410 hours, the replacement for bearing components can be carried out during overhaul after operating for 8000 hours and the replacement intervals for components of turning gear is after operating for 4500 hours. The reliability values for each critical component before and after preventive maintenance remains the same, but the value of downtime on each component decreases. The total values of availability for each critical component exceeds 95%.
Algoritma Heuristik untuk Menentukan Biaya Crashing Minimum pada Project Network dengan Dua Jalur Kritis: Studi Kasus Proyek Produksi Electrical House oleh PT X Berry Yuliandra; Rini Syahfitri
Jurnal Optimasi Sistem Industri Vol. 14 No. 2 (2015): Published in October 2015
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v14.n2.p259-278.2015

Abstract

PT X is a company engaged in the production of the module, ship relay station (Electrical House)as well as oil and gas mining equipment. The company uses a project-based production system in the production process of that equipment. Type of project usually performed is the Engineering-Procurement-Construction (EPC) project. EPC is a type of project that involves process engineering, material procurement, and products construction. PT X main product is a module or electrical house (E-House). Activities can be disrupted by a variety of conditions in the project implementation phase, such as weather and other unforeseen events. These conditions can hamper the process and affect the performance on the field.Activity scheduling and load out process which often suffer from delays caused project deadlines are often past the limit is given by the client. As in the case of E-House project examined in this study, its implementation has been delayed and should be accelerated for 8days. Therefore, the crashing project can greatly assist in adjusting the implementation plan with the actual condition. Crashing project analysis conducted based on project network diagram. The critical path is determined using Critical Path Method (CPM). Based on analysis results, project execution time can be shortened up to 8 days earlier. (From the normal time of 94 days to 86 days) at the cost $ 4.203.093,25.
Pengurangan Bullwhip Effect dengan Metode Vendor Managed Inventory Fenny Rubbayanti Dewi; Annisa Kesy Garside
Jurnal Optimasi Sistem Industri Vol. 14 No. 2 (2015): Published in October 2015
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v14.n2.p292-298.2015

Abstract

Information distortion caused PT Multi Sarana Indotani got higher demand than the distributor. Demand variability in each echelon of the supply chain (bullwhip effect) may occur due to lack of demand stability that the producer had difficulty in determining the amount of production. One of the collaboration methods that can be applied to overcome the information distortion as causes of the bullwhip effect is vendor managed inventory, where the needs of distributor and retailers monitored and controlled by the producer. In this case, vendor managed inventory applied to two echelons, producer, and distributor.
Perancangan Konfigurasi Tinggi Setang, Sadel, dan Pedal Sepeda yang Ergonomis Lusi Susanti; Yogi Hendra Agustion
Jurnal Optimasi Sistem Industri Vol. 14 No. 1 (2015): Published in April 2015
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v14.n1.p33-38.2015

Abstract

The bike is still one of the favorite modes of transportation as it is cheaper and environmentally friendly. However, some problems still arise in current bicycle design, one of which is a discrepancy between dimensions of the bike with anthropometry of the user. This has resulted in unneutral and uncomfortable posture for the users. This study focuses on providing optimum configuration of distance from saddle to pedal, the height of handle-bar, and distance from handlebar to saddle of the bike. Some physiological parameters such as the percentage of CVL (cardiovascular limit), energy consumption and Posture Evaluation index are measured to determine the optimum distance of handle-bar, distance from handlebar to saddle, and distance from saddle to pedal. Results show that it is necessary to modify the current dimension of the bike to accommodate three posture categories of Indonesia population: small posture (P5), medium (P50) and large posture (P95).

Page 31 of 40 | Total Record : 394

 29   30   31   32   33 

Filter by Year

2010 2025


Reset
Filter By Issues
All Issue Vol. 24 No. 2 (2025): Published in December 2025 Vol. 24 No. 1 (2025): Published in June 2025 Vol. 23 No. 2 (2024): Published in January 2025 (published late, please read our note) Vol. 23 No. 1 (2024): Published in July 2024 Vol. 22 No. 2 (2023): Published in December 2023 Vol. 22 No. 1 (2023): Published in May 2023 Vol. 21 No. 2 (2022): Published in October 2022 Vol. 21 No. 2 (2022): Published in November 2022 Vol. 21 No. 1 (2022): Published in May 2022 Vol. 21 No. 1 (2022): Published in April 2022 Vol. 20 No. 2 (2021): Published in November 2021 Vol. 20 No. 2 (2021): Published in October 2021 Vol. 20 No. 1 (2021): Published in April 2021 Vol. 20 No. 1 (2021): Published in May 2021 Vol. 19 No. 2 (2020): Published in November 2020 Vol. 19 No. 2 (2020): Published in October 2020 Vol. 19 No. 1 (2020): Published in June 2020 Vol. 19 No. 1 (2020): Published in April 2020 Vol. 18 No. 2 (2019): Published in October 2019 Vol. 18 No. 2 (2019): Published October 2019 Vol. 18 No. 1 (2019): Published April 2019 Vol. 18 No. 1 (2019): Published in May 2019 Vol. 17 No. 2 (2018): Published in October 2018 Vol. 17 No. 1 (2018): Published in April 2018 Vol. 16 No. 2 (2017): Published in October 2017 Vol. 16 No. 1 (2017): Published in May 2017 Vol. 16 No. 1 (2017): The Improved JOSI is Published in May 2017 Vol. 15 No. 2 (2016): Published in November 2016 Vol. 15 No. 1 (2016): Published in March 2016 Vol. 14 No. 2 (2015): Published in 1st October 2015 Vol. 14 No. 2 (2015): Published in October 2015 Vol. 14 No. 1 (2015): Published in April 2015 Vol. 13 No. 2 (2014): Published in 1st October 2014 Vol. 13 No. 2 (2014): Published in October 2014 Vol. 13 No. 1 (2014): Published in April 2014 Vol. 12 No. 2 (2013): Published in 1st October 2013 Vol. 12 No. 1 (2013): Published in 1st April 2013 Vol. 12 No. 2 (2013): Published in October 2013 Vol. 12 No. 1 (2013): Published in April 2013 Vol. 11 No. 2 (2012): Published in 1st October 2012 Vol. 11 No. 1 (2012): Published in 1st April 2012 Vol. 11 No. 2 (2012): Published in October 2012 Vol. 11 No. 1 (2012): Published in April 2012 Vol. 10 No. 2 (2011): Published in 1st October 2011 Vol. 10 No. 1 (2011): Published in 1st April 2011 Vol. 10 No. 2 (2011): Published in October 2011 Vol. 10 No. 1 (2011): Published in April 2011 Vol. 9 No. 2 (2010): Published in 1st October 2010 Vol. 9 No. 1 (2010): Published in 1st April 2010 Vol. 9 No. 2 (2010): Published in October 2010 Vol. 9 No. 1 (2010): Published in April 2010 More Issue