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<![CDATA[Optimalisasi Sistem Persediaan Bahan Baku Karet Mentah (Lateks) dengan Metode Lot Sizing (Studi Kasus: PT Abaisiat Raya) ]]>
<![CDATA[Dina Rahmayanti]]>;
<![CDATA[Ahmad Fauzan]]>
<![CDATA[ Jurnal Optimasi Sistem Industri Vol. 12 No. 1 (2013): Published in April 2013 ]]>
Publisher : <![CDATA[The Industrial Engineering Department of Engineering Faculty at Universitas Andalas ]]>
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DOI: 10.25077/josi.v12.n1.p317-325.2013
<![CDATA[PT Abaisiat Raya is one of the manufacturers of rubber crumb (crumb rubber) in the city of Padang. Latex inventory management system at PT Abaisiat Kingdom basically signinfikan still need improvement. It is based on the planning activities in the warehouse inventory of raw materials firms irregular, thus causing excess stock (over stock) at a time and shortage of stock (stock out) at other times. Process optimization is done with latex inventory system involving factors such as demand forecasting production planning or latex needs during the period of next 12 (in 2012), the costs involved, the waiting time (lead time), the implementation of forecasting methods, determination of size lots (lot sizing), the determination of safety stock (safety stock), and re-ordering time (reorder point), so the output will get a number of requests are for 12 periods ahead, the size of each reservation period, the total cost is required, when re-ordering will be done , as well as how much inventory to latex in the warehouse. Based on these results, it was found that the optimal size of the book is the same as the demand for each period (reservation is made each period) due to a cyclical pattern of demand and decreases throughout the planning period. Value of the stock or safety stock is located in Kg 114,282.20, and re-ordering time (reorder point) to cope with fluctuations do when the stock has reached a level of 333,130.95 kg.]]>
<![CDATA[Pengendalian Persediaan Bahan Baku Vulkanisir Ban (Studi Kasus: PT. Gunung Pulo Sari) ]]>
<![CDATA[Difana Meilani]]>;
<![CDATA[Ryan Eka Saputra]]>
<![CDATA[ Jurnal Optimasi Sistem Industri Vol. 12 No. 1 (2013): Published in April 2013 ]]>
Publisher : <![CDATA[The Industrial Engineering Department of Engineering Faculty at Universitas Andalas ]]>
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DOI: 10.25077/josi.v12.n1.p326-334.2013
<![CDATA[The problem of raw materials is the most fundamental issue for a manufacturing company, because the raw material is something that is very important for a production process. Companies must be able to maintain optimal raw material inventory that the production process can run smoothly so as to achieve the production target set by the company and can meet the demand of consumers. PT. Gunung Pulo Sari is one of the manufacturing company engaged in tire retreading. Here there are two types of main raw material of the tire retreading process is the rubber cold rare steak to cook and cook to cook hot rubber. PT. Gunung Sari Pulo do not meet the criteria of good inventory management. So far the company in order raw materials only based on estimates only. We conducted this study in order PT. Gunung Sari Pulo can manage them inventory system by finding the optimum safety stock, determine the total cost of the minimum size of the buyer to use the dynamic method, and the reorder point. Based on the research that has been done then the obtained value of safety stock is 18 units, the total minimum cost is Rp. Rp. 133 991 672, and reordering time (Reorder point) is 93 units.]]>
<![CDATA[Antara Desain Dan Product-Service Systems: Suatu Tinjauan Literatur ]]>
<![CDATA[Berry Yuliandra]]>;
<![CDATA[Agus Sutanto]]>;
<![CDATA[Rika Ampuh Hadiguna]]>
<![CDATA[ Jurnal Optimasi Sistem Industri Vol. 12 No. 1 (2013): Published in April 2013 ]]>
Publisher : <![CDATA[The Industrial Engineering Department of Engineering Faculty at Universitas Andalas ]]>
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DOI: 10.25077/josi.v12.n1.p335-342.2013
<![CDATA[Persaingan bisnis global yang semakin ketat telah menyebabkan terjadinya pergeseran paradigma bisnis dari product-oriented menjadi penyediaan solusi yang memuaskan kebutuhan konsumen. Hal ini telah mendorong kemunculan konsep Product-Service Systems (PSS). Tulisan ini bertujuan untuk membahas hubungan antara konsep desain dan PSS berdasarkan literatur yang tersedia. Berdasarkan kajian yang dilakukan terhadap berbagai literatur tersebut dapat diambil kesimpulan bahwa PSS merupakan konsep yang diyakini sebagai jalan menuju sustainability melalui integrasi antara produk dan jasa dalam penyediaan solusi yang memenuhi kebutuhan spesifik konsumen. Proses desain PSS perlu memperhatikan kebutuhan konsumen dan stakeholder yang terkait melalui penggunaan metode dan pendekatan yang mampu mengintegrasikan pengembangan produk dan jasa dalam perspektif waktu yang sama.Evaluasi untuk mendukung keberhasilan implementasi PSS dapat dilakukan berdasarkan aspek sustainability, life cycle cost maupun berdasarkan perspektif konsumen dan penyedia.]]>
<![CDATA[Model Lokasi-Alokasi Bantuan Logistik Catastrophic Berbasis Masjid di Kota Padang ]]>
<![CDATA[Nofa Ariyana]]>
<![CDATA[ Jurnal Optimasi Sistem Industri Vol. 11 No. 2 (2012): Published in October 2012 ]]>
Publisher : <![CDATA[The Industrial Engineering Department of Engineering Faculty at Universitas Andalas ]]>
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DOI: 10.25077/josi.v11.n2.p235-242.2012
<![CDATA[Padang is one of the most vulnerable area of earthquake and tsunami in Indonesia. Therefore, it is necessary to have a good strategic planning about disaster logistics system and contingency planning. Contigency planning have three factors, human resources, transportation, and inventory. The problems that happened at distribution of disaster logistical buffer between distribution centre (BPBD Padang) and evacuation post are needed a buffer post (assistant post). This research suggest a location allocation model to select buffer post location and logistics allocation that distributed to evacuation post with minimum cost.]]>
<![CDATA[Model Dinamika Sistem Pasokan dan Distribusi pada Gangguan Pendistribusian BBM PT. Pertamina Padang ]]>
<![CDATA[Ivan]]>
<![CDATA[ Jurnal Optimasi Sistem Industri Vol. 11 No. 2 (2012): Published in October 2012 ]]>
Publisher : <![CDATA[The Industrial Engineering Department of Engineering Faculty at Universitas Andalas ]]>
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DOI: 10.25077/josi.v11.n2.p243-252.2012
<![CDATA[This paper discusses supply and distribution Bahan Bakar Minyak (BBM) system at PERTAMINA Padang to look a performancy system that disturbance of distribution like replacement Automatic Circuit Breaker (ACB). The replacement of ACB processes about 12 hours and causes the distributing activity of BBM to Stasiun Pengisian Bahan Bakar Umum (SPBU) has to be stopped. It makes impact toward the work ability of supplying and distributing system. Therefore, a planning model which is able to see the impact of ACB replacement toward system behavior of supplying and distributing is needed. Purpose of the modelling is to study the behavioral effects of variable in supply and distribution system using causal loop diagram and stock flow diagram. Result of this diagram has built simulation model to analyze performance system. Verification testing done by the method of checking the level and flow and testing of the coding. Validation of the model while the testing is done by operational graphics and the variability parameter sensitivity analysis. The model was designed and carried out the design of simulated scenarios to determine a strategy for decision-makers to look at the performance of BBM supply and distribution system.]]>
<![CDATA[Perancangan Sistem Informasi Manajemen Rantai Pasok Minyak Sawit Mentah Berbasis GIS ]]>
<![CDATA[Ringgo Afrinando]]>
<![CDATA[ Jurnal Optimasi Sistem Industri Vol. 11 No. 2 (2012): Published in October 2012 ]]>
Publisher : <![CDATA[The Industrial Engineering Department of Engineering Faculty at Universitas Andalas ]]>
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DOI: 10.25077/josi.v11.n2.p253-264.2012
<![CDATA[This study discusses about information systems of CPO supply chain management in PTPN 6 Ophir. PTPN 6 management still use the conventional system (archival documents) in running their business. This information is not yet integrated with the map of plantation, so it will allow errors and inaccuracies in the planning, management and maintenance of oil palm plantations. Otherwise, the output from the production and processing of FFB to CPO and Palm Kernel also has not been well managed. So this would have difficulties in data storage on the the plantation and harvest information and to make decision for the FFB receiving division and distribution of CPO and Palm Kernel. Therefore needed a system that can control the activities in the oil palm plantation and processing by utilizing information technology system that integrates mapping and data information in a software that will facilitate decision making for planning and maintenance. The stages of the study consist of preliminary study, the selection method of problem solving, designing model system, database and software design and verification and validation of the model system. The study used primary data and secondary data. The primary data includes interviews about the company's business processes and the mechanisms of oil production. Secondary data includes administrative forms such as SPB, form the collection of FFB, weight measurement form and daily report sheet of factory. Model systems in the information system design used Object Oriented Analysis and Design method. This method will considers and designing systems with focusing the objects associated with the system. Verification results of the design has been done by using the method of Computerized Model Verification. This method to see whether the information system has been designed to run properly with the conceptual model of the system. Validation has been done by using Operational Validity. Validity Operational techniques used Black Box Test Method or directly test by the person that understand the issues in study. The results was Information System Software Design of CPO Supply Chain Management at PTPN 6 already integrates all data and information on the plantation, processing and marketing of CPO and palm kernel oil in a web-based application with support for spatial data processing in online mapping format. The system model can be seen through the business process diagram, use case diagram, class diagram and entity relationship diagram.]]>
<![CDATA[Strategi Inovasi Industri Kecil Suku Cadang di Kota Padang ]]>
<![CDATA[Dina Rahmayanti]]>;
<![CDATA[Widya Marcelena]]>
<![CDATA[ Jurnal Optimasi Sistem Industri Vol. 11 No. 2 (2012): Published in October 2012 ]]>
Publisher : <![CDATA[The Industrial Engineering Department of Engineering Faculty at Universitas Andalas ]]>
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DOI: 10.25077/josi.v11.n2.p265-278.2012
<![CDATA[Small and medium enterprises in Indonesia gave big contributions to create job opportunities for community and increased Gross Domestic Product. Unfortunately, the current SMEs did not get any respect from the government. This is evidenced by many problems that happened with SMEs in Indonesia. Agency Statistic Center conducted survey in 2009 and 2010 and identified causes of the problems are availability of raw materials, financial problem, marketing, fuel or energy, transportation, skills, payment and many others. Formulation of the problems is how to design indicators of innovation that can be used to make policy strategies to solve the problems. The objective of research is to recommend some innovation indicators for spare part in Padang and use the indicators to make innovation policies. Method to determine the ability innovation of spare parts industries is Quality Function Deployment (QFD). The first stage is identify consumer needs. Consumer needs obtained from literatures and interviewed of stakeholders. Then, calculated based on customer importance ratings to obtain critical and non critical indicators. Indicators will be presented into the House of Quality (HOQ). The results of HOQ are determined some strategies by using SWOT analysis. This research result obtained 25 innovation indicators of technology that is divided into three aspects such as technology aspects, design and product quality aspects. Strategy formulation from SWOT analysis result some strategies with 4 categories and among of them are SO strategy (4 strategies), WO strategy (5 strategies), ST strategy (4 strategies), and WT strategy (3 strategies). Besides that, strategy architecture will present strategy implementation for 10 years and completed with some people that have participation to make this strategy implementation successful.]]>
<![CDATA[Analisis Kompetensi Kewirausahaan Industri Kecil Suku Cadang di Kota Padang ]]>
<![CDATA[Prima Fithri]]>;
<![CDATA[Amanda Febria Sari]]>
<![CDATA[ Jurnal Optimasi Sistem Industri Vol. 11 No. 2 (2012): Published in October 2012 ]]>
Publisher : <![CDATA[The Industrial Engineering Department of Engineering Faculty at Universitas Andalas ]]>
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DOI: 10.25077/josi.v11.n2.p279-292.2012
<![CDATA[As economic development and current technology, there tends to SMEs have been reversed there is some effort to close down due to lack of existing orders in the business. Therefore, the government made efforts to assist existing SMEs to be able to survive in the face of global crisis is happening right now. These efforts may include providing small loans and may include training services in accordance with its business. One of the materials provided in the training is about entrepreneurship so that SMEs are expected to compete with similar companies. The low ability entrepreneur pointed out as one of the reasons SMEs are not able to compete with large companies, such as SI (Small Industry) Spare Parts in the city of Padang. The failure to penetrate IK Parts of competition to supply spare parts in the PT. Semen Padang because of its low ability entrepreneur is owned by SI. With no indicator of entrepreneur ability, there are some problems for governments about policies that will be taken for judge the SI. Therefore, the entrepreneur ability should be decided to helps government in decisions making of policies, so that SI can be competing with larger companies. The method that been used in this study is the Quality Function Deployment (QFD) and the recommendations for policies that can be used by the government by using SWOT analysis. QFD is used to identify consumer needs and its association with the characteristic techniques provided by the government, so that the final results are the critical competencies that should be developed first. The linkage between the needs of consumers with technical characteristics reflected in the House of Quality (HOQ). While the results of the SWOT analysis are four types of strategies which can be used later by using the strategy outlined in the strategy implementation architecture for 10 years. This research resulted in 25 indicators of entrepreneurial competencies that include Human Resources (HR), financial, and research and development which consist of eight aspects. The resulting formulation of strategies using SWOT analysis generates SO Strategies (5 strategies), WO Strategies (7 strategies), ST Strategies (7 strategies), and WT Strategies (5 strategies). The design of the implementation of the strategy is planned for 10 years which is reflected in the architecture of the strategy and its implementation strategies.]]>
<![CDATA[Meminimalisasi Nilai Error Peramalan dengan Algoritma Extreme Learning Machine ]]>
<![CDATA[Rachmad Hidayat]]>;
<![CDATA[Suprapto]]>
<![CDATA[ Jurnal Optimasi Sistem Industri Vol. 11 No. 1 (2012): Published in April 2012 ]]>
Publisher : <![CDATA[The Industrial Engineering Department of Engineering Faculty at Universitas Andalas ]]>
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DOI: 10.25077/josi.v11.n1.p187-192.2012
<![CDATA[This study uses a machine learning algorithm which is the extreme model one of the new learning method of neural networks. Determining the value of forecasting based on actual value. Output generated more quickly in this process, because the learning done in a fast speed and better accuracy rate than conventional forecasting methods. Epoch using the parameter changes and changes in the range of accuracy of test results demonstrate the value of error is quite good during the system testing.]]>
<![CDATA[Perancangan Model Pengukuran Kinerja Green Supply Chain Pulp dan Kertas ]]>
<![CDATA[Hendra Saputra]]>;
<![CDATA[Prima Fithri]]>
<![CDATA[ Jurnal Optimasi Sistem Industri Vol. 11 No. 1 (2012): Published in April 2012 ]]>
Publisher : <![CDATA[The Industrial Engineering Department of Engineering Faculty at Universitas Andalas ]]>
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DOI: 10.25077/josi.v11.n1.p193-202.2012
<![CDATA[Green supply chain performance measurement system is required to manage environmental risk, increase competitive and obtain appropriate strategy for company. Performance measurement system in PT RAPP only focus on midstream and downstream operation related with manufacturing processes and supplier. The problem is how to redesign existing performance measurement system for pulp and paper in PT RAPP, so that downstream operation related with distributor can be integrated into green supply chain performance measurement system. Research objective designing conceptual and computer model for green supply chain measurement of pulp and wherein information entire supply chain can be managed well. Conceptual model is designed with involving activities such as stakeholder identification, stakeholder green requirement analysis, green objective identification, and KPI weighting. Supply chain operations reference (SCOR) metric is applied to identify key performance indicator (KPI). KPI weighting is determined by AHP method. Computer application is designed by combining database, mathematical formulation, and user interface. it is designed to implement conceptual model. Research result is consisting of two levels with fifteen objectives and twenty seven KPI’s. Proposed application has capability to support decision maker in calculating partial and total performance measure each period. It is designed specifically with quantitative measure to support operational decision making related with environmental aspect.]]>
