Jurnal Optimasi Sistem Industri最新文献_第6页

Analysis of Inventory Control by Using Economic Order Quantity Model – A Case Study in PT Semen Padang 基于经济订货量模型的库存控制分析——以巴东PT精液为例

Jurnal Optimasi Sistem Industri Pub Date : 2019-10-30 DOI: 10.25077/josi.v18.n2.p116-124.2019

P. Fithri, Alizar Hasan, F. M. Asri

{"title":"Analysis of Inventory Control by Using Economic Order Quantity Model – A Case Study in PT Semen Padang","authors":"P. Fithri, Alizar Hasan, F. M. Asri","doi":"10.25077/josi.v18.n2.p116-124.2019","DOIUrl":"https://doi.org/10.25077/josi.v18.n2.p116-124.2019","url":null,"abstract":"Inventory control is a very important issue. It is because the amount of inventory will determine or affect the smoothness of the production process as well as the effectiveness and efficiency of the company. PT Semen Padang is a manufacturing company that produces 10,400,000 tons of cement per year. The achievement of the cement production target at this company depends on the availability of raw materials needed in the cement production process itself. Gypsum is an additional material of the cement production process which is very important because it is a raw material that must exist in the process of making cement. So, if the inventory of gypsum cannot meet the needs of production, then the production process of cement making will be disrupted. PT Semen Padang is using the Min-Max method for inventory control. But the costs are quite high. The cost of inventory can be minimized by using another method such as EOQ (Economic Order Quantity). The conclusions of this research are in 2016 by using EOQ method, the optimal order quantity is 32,073 ton per order, and the frequency is 9 times in a year with total cost Rp. 4,757,673,813.48, and in 2017, the optimal order quantity is 34,856 tons per order and the frequency is 9 times in a year with total cost Rp. 9,694,805,608.36.","PeriodicalId":30702,"journal":{"name":"Jurnal Optimasi Sistem Industri","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42067649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Penjadwalan Flow Shop untuk Meminimasi Total Tardiness Menggunakan Algoritma Cross Entropy–Algoritma Genetika

Jurnal Optimasi Sistem Industri Pub Date : 2019-10-30 DOI: 10.25077/josi.v18.n2.p133-141.2019

Dana Marsetiya Utama, Leo Rizki Ardiansyah, Annisa Kesy Garside

引用次数: 8

Usulan Penerapan Total Productive Maintenance pada Mesin Turbin Gas 燃气轮机全生产维护曝光方案

Jurnal Optimasi Sistem Industri Pub Date : 2019-05-16 DOI: 10.25077/JOSI.V18.N1.P37-47.2019

Irnanda Pratiwi

{"title":"Usulan Penerapan Total Productive Maintenance pada Mesin Turbin Gas","authors":"Irnanda Pratiwi","doi":"10.25077/JOSI.V18.N1.P37-47.2019","DOIUrl":"https://doi.org/10.25077/JOSI.V18.N1.P37-47.2019","url":null,"abstract":"Overall Equipment Effectiveness (OEE) is one of the tools to enhance the effectiveness of the utilization rate of machinery and equipment in Total Productive Maintenance (TPM). TPM is a principle of management to improve productivity and efficiency of the production company to use the machine effectively. This study measures the value of OEE on gas turbine engine Centaur 50 C3344 which held on operation and maintenance section in PT Perta Samtan Gas Kilang Ekstraksi NGL Prabumulih in the period, followed by analyzing the value of using Pareto analysis of the results obtained by the root causes of the OEE. The conclusion that the value of the analysis results obtained on average exceeded the standard value of OEE 85.63% from 85%, even though in one period the value of OEE less than standard (22.63%). Factors that may experience rapid drop predicted loss is breakdown losses 382 hours (46.53%) and idling minor stoppages 373 hours (45.43), reduce speed 48 hours or 5.85%, rework losses 13 hours or 1.58%, and set up and adjustment losses 5 hours or 0.61%. As a result of which may not have an impact in a short time, but will immediately attack the machine if there is no treatment of maintenance as continuously and directly.","PeriodicalId":30702,"journal":{"name":"Jurnal Optimasi Sistem Industri","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41785974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Model Pengoptimuman Portofolio Mean-Variance dan Perkembangan Praktisnya 微变量投资组合模型及其实况发展

Jurnal Optimasi Sistem Industri Pub Date : 2019-05-16 DOI: 10.25077/JOSI.V18.N1.P25-36.2019

Ezra Putranda Setiawan, Dedi Rosadi

引用次数: 1

Model Matematika Dampak Industri 4.0 terhadap Ketenagakerjaan Menggunakan Pendekatan Sistem 数学模型4.0工业使用系统方法对就业的影响

Jurnal Optimasi Sistem Industri Pub Date : 2019-05-16 DOI: 10.25077/JOSI.V18.N1.P14-24.2019

Rio Aurachman

引用次数: 5

Aplikasi Terapi Wicara bagi Remaja Penyandang Disabilitas Intelektual Ringan 轻度智力障碍青少年的语言治疗应用

Jurnal Optimasi Sistem Industri Pub Date : 2019-05-16 DOI: 10.25077/JOSI.V18.N1.P86-96.2019

Thedy Yogasara, Cecilia Stefiany

{"title":"Aplikasi Terapi Wicara bagi Remaja Penyandang Disabilitas Intelektual Ringan","authors":"Thedy Yogasara, Cecilia Stefiany","doi":"10.25077/JOSI.V18.N1.P86-96.2019","DOIUrl":"https://doi.org/10.25077/JOSI.V18.N1.P86-96.2019","url":null,"abstract":"There are more than three million people in Indonesia who have speech disorders. Speech disorders are also experienced by people with intellectual disabilities, who need speech therapy to practice their expressive speech skills. However, the current types of speech therapy, in general, are not easily accessible and require considerable cost. The purpose of this study, therefore, is to provide a speech therapy tool that can be accessed easily and requires low cost. This research designs a mobile application as a speech therapy tool for teenagers with mild intellectual disability. The design process began with the identification of user needs, followed by the design of application concepts using a design workshop. The best concept was developed into a prototype, which was then evaluated through a usability testing, using effectiveness, efficiency, learnability, memorability, and accessibility as the evaluation criteria. Based on the evaluation, the effectiveness of the application is 82.2% and its efficiency is 78.9%. Meanwhile, the learnability and memorability of the application consecutively score 80% and 94.4%. These results show that the application has a good level of accessibility. Evaluation was also conducted using the System Usability Scale (SUS) questionnaire, which resulted in a total score of 74 (acceptable). In addition, interviews were conducted to identify remaining flaws that were subsequently used as a basis for design improvement of the application.","PeriodicalId":30702,"journal":{"name":"Jurnal Optimasi Sistem Industri","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44834115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Sistem Pengukuran Kinerja Supply Chain Management Pada Proyek Konstruksi 一个监管链监管系统

Jurnal Optimasi Sistem Industri Pub Date : 2019-05-16 DOI: 10.25077/JOSI.V18.N1.P75-85.2019

Demi Ramadian, Elita Amrina

{"title":"Sistem Pengukuran Kinerja Supply Chain Management Pada Proyek Konstruksi","authors":"Demi Ramadian, Elita Amrina","doi":"10.25077/JOSI.V18.N1.P75-85.2019","DOIUrl":"https://doi.org/10.25077/JOSI.V18.N1.P75-85.2019","url":null,"abstract":"Construction project implementation process is often found inefficiency and problems at every stage of the construction process. Inefficiencies are caused because construction projects have high levels of fragmentation. The high level of fragmentation cannot be separated from the complexity and many work items on construction projects. To reduce the problem of inefficiencies in the implementation of construction projects required good supply chain management or better known as supply chain management (SCM) on construction projects. Therefore it is necessary to study the management of SCM in the construction project to reduce the inefficiency that occurred. SCM management of construction projects is done by designing SCM performance measurement systems in construction projects. This performance measurement system produces indicators that are combined with the Supply Chain Operation Reference (SCOR) method. So it helps in performing SCM performance measurement on construction projects. From the design results, obtained 14 SCM performance indicators on construction projects. The performance indicators are then used to perform SCM performance measurement of cement plant construction projects. From the measurement results obtained SCM performance value of 41 from a scale of 100. This shows the performance of SCM on construction projects for the construction of the cement plant is at a marginal level.","PeriodicalId":30702,"journal":{"name":"Jurnal Optimasi Sistem Industri","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44653418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Model Kebijakan Perkebunan Nilam di Pasaman Barat dengan Pendekatan Sistem Dinamis 以动态系统方法为西萨曼花园政策模型

Jurnal Optimasi Sistem Industri Pub Date : 2019-05-16 DOI: 10.25077/JOSI.V18.N1.P65-74.2019

Dina Rahmayanti, Rika Ampuh Hadiguna, Santosa Santosa, Novizar Nazir

引用次数: 1

Model Optimasi Perancangan Jaringan Rantai Pasok Biomassa dari Tandan Kosong Kelapa Sawit di Sumatera Barat 模型优化网络设计西部地区空白标记锯尾鸡生物量输入

Jurnal Optimasi Sistem Industri Pub Date : 2019-05-16 DOI: 10.25077/JOSI.V18.N1.P1-13.2019

Febriza Imansuri, Rika Ampuh Hadiguna, Feri Afrinaldi

{"title":"Model Optimasi Perancangan Jaringan Rantai Pasok Biomassa dari Tandan Kosong Kelapa Sawit di Sumatera Barat","authors":"Febriza Imansuri, Rika Ampuh Hadiguna, Feri Afrinaldi","doi":"10.25077/JOSI.V18.N1.P1-13.2019","DOIUrl":"https://doi.org/10.25077/JOSI.V18.N1.P1-13.2019","url":null,"abstract":"West Sumatra has great potential in developing biomass based on palm oil waste. This is because the largest plantation production in West Sumatra comes from the oil palm commodity of 1,082,820 tons in 2014. Therefore, it is necessary to design a model of supply chain biomass network for the distribution of Empty Fruit Bunches (EFB) from CPO factory suppliers located in West Sumatra and distributed to Depot Pertamina Teluk Kabung. Stages performed in the implementation of this study began with a preliminary study to determine the potential of biomass in West Sumatra. Furthermore, the design of chain supply chain optimization model by identifying supply chain activity, knowing the characteristics of supply chain system and make the formulation of mathematical model. The design of supply chain biomass from Empty Fruit Bunches (EFB) in West Sumatera, starting from raw material Tandan Kosong Kelapa Sawit (TKKS) sourced from Crude Palm Oil (CPO) factory in West Pasaman Regency and surrounding. This is because Pasaman Barat Regency is the central agroindustry of oil palm plantation which has 17 most palm oil factories in West Sumatra. The potential of bioethanol derived from CPO waste can be done by establishing bioethanol plant located with the same CPO factory so that it is adjacent to the source of the raw material. The result of the mathematical model mixed integer linear programming is placement of bioethanol plant location at PT Pasaman Marama Sejahtera with medium scale and total cost of IDR 251,563,700,000.00.","PeriodicalId":30702,"journal":{"name":"Jurnal Optimasi Sistem Industri","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45450998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Basic Emotion Recogniton using Automatic Facial Expression Analysis Software 基于表情分析软件的基本情绪识别

Jurnal Optimasi Sistem Industri Pub Date : 2019-05-16 DOI: 10.25077/JOSI.V18.N1.P55-64.2019

V. Triyanti, Y. Yassierli, H. Iridiastadi

{"title":"Basic Emotion Recogniton using Automatic Facial Expression Analysis Software","authors":"V. Triyanti, Y. Yassierli, H. Iridiastadi","doi":"10.25077/JOSI.V18.N1.P55-64.2019","DOIUrl":"https://doi.org/10.25077/JOSI.V18.N1.P55-64.2019","url":null,"abstract":"Facial expression was proven to show a person's emotions, including 6 basic human emotions, namely happy, sad, surprise, disgusted, angry, and fear. Currently, the recognition of basic emotions is applied using the automatic facial expression analysis software. In fact, not all emotions are performed with the same expressions. This study aims to analyze whether the six basic human emotions can be recognized by software. Ten subjects were asked to spontaneously show the expressions of the six basic emotions sequentially. Subjects are not given instructions on how the standard expressions of each of the basic emotions are. The results show that only happy expressions can be consistently identified clearly by the software, while sad expressions are almost unrecognizable. On the other hand surprise expressions tend to be recognized as mixed emotions of surprise and happy. There are two emotions that are difficult to express by the subject, namely fear and anger. The subject interpretation of these two emotions varies widely and tends to be unrecognizable by software. The conclusion of this study is the way a person shows his emotions varies. Although there are some similarities in expression, it cannot be proven that all expressions of basic human emotions can be generalized. Further implication of this research needs further discussion.","PeriodicalId":30702,"journal":{"name":"Jurnal Optimasi Sistem Industri","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45964253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10