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Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri

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Published by Universitas Kristen Petra Surabaya

ISSN : 14112485 EISSN : 20877439 DOI : -

Core Subject : Engineering,

Industrial & Manufacturing Engineering

Jurnal Teknik Industri aims to: Promote a comprehensive approach to the application of industrial engineering in industries as well as incorporating viewpoints of different disciplines in industrial engineering. Strengthen academic exchange with other institutions. Encourage scientist, practicing engineers, and others to conduct research and other similar activities.

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Articles 8 Documents

Search results for , issue "Vol. 9 No. 2 (2007): DECEMBER 2007" : 8 Documents clear

A REPLENISHMENT POLICY FOR ITEM WITH PRICE DEPENDENT DEMAND AND DETERIORATING UNDER MARKDOWN POLICY Hui Ming Wee; Gede Agus Widyadana
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 9 No. 2 (2007): DECEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

Many researches on deteriorating inventory model have been developed in recent years. This paper develops deteriorating inventory model with price-dependent demand and uses markdown policy to increase profit. Two examples are used to explain the model and some interesting results are derived. Markdown policy can increase total profit, but the best markdown time and price depend are case dependent.

ROBUST-HYBRID GENETIC ALGORITHM FOR A FLOW-SHOP SCHEDULING PROBLEM (A Case Study at PT FSCM Manufacturing Indonesia) Johan Soewanda; Tanti Octavia; Iwan Halim Sahputra
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 9 No. 2 (2007): DECEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

This paper discusses the application of Robust Hybrid Genetic Algorithm to solve a flow-shop scheduling problem. The proposed algorithm attempted to reach minimum makespan. PT. FSCM Manufacturing Indonesia Plant 4's case was used as a test case to evaluate the performance of the proposed algorithm. The proposed algorithm was compared to Ant Colony, Genetic-Tabu, Hybrid Genetic Algorithm, and the company's algorithm. We found that Robust Hybrid Genetic produces statistically better result than the company's, but the same as Ant Colony, Genetic-Tabu, and Hybrid Genetic. In addition, Robust Hybrid Genetic Algorithm required less computational time than Hybrid Genetic Algorithm

ALOKASI PASOKAN BERDASARKAN PRODUK UNGGULAN UNTUK RANTAI PASOK SAYURAN SEGAR Marimin Marimin; Rika Ampuh Hadiguna
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 9 No. 2 (2007): DECEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

Application of artificial inteligent by using fuzzy logic can be one of way to handle supply chain situation in uncertainty environment. It was widely concern to study a supply chain using fuzzy logic that most needed. Ain of the study was apply fuzzy logic in determination of supply allocation for superior product in vegetables supply chain. Models was developed in three sub models. First was determination vegetables types that superior by using pareto technique and exponential compaarison method (MPE). Second was expert system to determine supply needed and finally was optimizing supply allocation using fuzzy multi-objective linear programming. The model was applied in a vegetables agroindustry that superior product selected was red paprica. Analysis againts model behaviour is conducted for pesimistic and optimistic scenarios. Abstract in Bahasa Indonesia : Penerapan kecerdasan buatan dengan logika fuzzy bisa menjadi salah satu cara untuk mengatasi situasi rantai pasok dalam lingkungan ketidakpastian. Perhatian yang lebih luas untuk pembahasan rantai pasok menggunakan teknik fuzzy masih sangat dibutuhkan. Studi ini bertujuan menerapkan logika fuzzy dalam penentuan alokasi pasokan untuk produk unggulan pada rantai pasok agroindustri sayuran. Model yang terdiri dari tiga sub model. Sub model pertama adalah penentuan jenis sayuran yang diunggulkan menggunakan kombinasi teknik pareto dan metode perbandingan eksponensial (MPE). Sub model kedua adalah sistem pakar untuk menentukan kebutuhan pasokan menggunakan logika fuzzy. Sub model ketiga adalah optimasi alokasi pasokan menggunakan programa linear obyektif majemuk fuzzy. Model yang dibangun kemudian diterapkan pada sebuah perusahaan agroindustri sayuran dengan produk unggulan terpilih adalah paprika merah. Analisis terhadap prilaku model juga dilakukan untuk skenario pesimis dan optimis. Kata kunci: fuzzy, sistem pakar, MPE, obyektif majemuk, sayuran

KERANGKA KERJA PENILAIAN INVESTASI LINGKUNGAN (ENVIRONMENTAL PERFORMANCE APPRAISAL) Sihar Tigor Benjamin Tambunan
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 9 No. 2 (2007): DECEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

Business sustainability can not depend on the business financial performance merely. Poor environmental performance is believed can contribute negative impact on business sustainability in the long run. To face these environmental problems, Environmental Management Accounting (EMA) tools - especially Materials & Energy Flow Accounting (MEFA)- is used to identify opportunities of environmental performance on a production system that will be solved with application of an environmental investment decision. For better decision, investment decision to improve environmental performance is recommended to consider at least three monetary indicators, NPV, profitability, and Payback Periods, and two environmental indicators, Ecological Advantage Ratio (EAR) and Ecological Payback Period (EPP). Abstract in Bahasa Indonesia : Kelangsungan hidup usaha tidak dapat semata-mata bergantung pada kinerja finansial. Kinerja lingkungan yang buruk sebagai dampak keberadaan usaha diyakini dapat memberikan dampak yang buruk pula bagi kelangsungan hidup usaha dalam jangka panjang. Untuk mengatasi masalah lingkungan tersebut, instrumen-instrumen akuntansi manajemen lingkungan (EMA), khususnya diagram alur bahan dan energi (MEFA), digunakan dalam proses pengidentifikasian peluang-peluang perbaikan kinerja lingkungan dalam sebuah sistem produksi yang nantinya akan diselesaikan dengan pembuatan sebuah keputusan investasi lingkungan. Untuk mendapatkan keputusan yang lebih baik, keputusan investasi untuk melakukan perbaikan kinerja lingkungan disarankan setidak-tidaknya memperhatikan tiga indikator moneter yaitu NPV, profitabilitas, dan periode pengembalian (PP) serta dua indikator lingkungan yaitu rasio keuntungan ekologis (EAR) dan periode pengembalian ekologis (EPP). Kata kunci: EMA, MEFA, EIA, EAR, EPP

FUZZY MODELING APPROACH AND GLOBAL OPTIMIZATION FOR DUAL RESPONSE SURFACE Dedy Dwi Prastyo; Muhammad Sjahid Akbar; Bambang Widjanorko Otok
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 9 No. 2 (2007): DECEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

Dual Response Surface (DRS) with Lagrange multiplier is one of the most familiar classical multi response surface methods. Classical DRS optimization doesn't concern about the quality characteristic of responses. In this paper, fuzzy approach is proposed for modeling DRS and quality characteristic of response simultaneously. The proposed method represented the object's quality characteristic physically. The proposed method is applied to composite carbon drilling process and resulting nonlinear function that to be determined its optimal point. Many optimization methods fail to reach global optimum point because the non linear function is multimodal. Therefore, we used genetic algorithm for finding the global optimum point.

PEMODELAN DAN PENYELESAIAN PERMASALAHAN PENJADWALAN PILOT DENGAN METODE EKSAK DEKOMPOSISI Ahmad Rusdiansyah; Yani Dhina Mirenani; Zya Labiba; Nurhadi Siswanto
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 9 No. 2 (2007): DECEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

Crew scheduling is one of most important operational problems in airline industries. Crew scheduling Problem consists of two steps that is "Crew Pairing" and "Crew Rostering". The research focusses on building Boeing 737-200's monthly pilot rostering of PT. X Airlines based on given pilot pairings. There are some vertical and horizontal regulations must be fulfilled in so that the problem becomes very complex and cannot be solved using a pure exact method in reasonable computational time. Accordingly, we propose a decomposition exact method to solve the problem. Our model was run using LINGO Optimization software. Experiment results showed that our schedules are outperform than the existing schedules of the airline for the case of May 2006. Abstract in Bahasa Indonesia : Penjadwalan kru pada suatu maskapai penerbangan merupakan salah satu permasalahan operasional yang terpenting. Penjadwalan kru terdiri dari dua tahapan yaitu tahap pengelompokkan kru dan penugasan kru. Penelitian ini memfokuskan pada pembuatan jadwal penugasan pilot pesawat Boeing 737-200 pada maskapai penerbangan PT. X Airlines yang ber-home base di Surabaya selama satu bulan, berdasar pada hasil pengelompokkan pilot yang telah ditentukan sebelumnya. Terdapat sejumlah peraturan horizontal dan vertikal yang harus dipenuhi membuatnya menjadi permasalahan kombinatorial yang sangat kompleks, sehingga tidak dapat diselesaikan dengan menggunakan metode eksak murni dalam waktu yang wajar. Untuk itu digunakan metode eksak dekomposisi. Model tersebut diterjemahkan menggunakan perangkat lunak optimisasi LINGO. Hasil eksperimen menunjukkan bahwa jadwal penugasan pilot yang dibuat dengan metode ini lebih baik daripada jadwal milik perusahaan untuk kasus pada bulan Mei 2006. Kata kunci: penjadwalan pilot, pengelompokkan pilot, aturan horizontal dan vertikal, metode eksak dekomposisi

REGRESSION ANALYSIS OF PRODUCTIVITY USING MIXED EFFECT MODEL Siana Halim; Indriati N Bisono
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 9 No. 2 (2007): DECEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

Production plants of a company are located in several areas that spread across Middle and East Java. As the production process employs mostly manpower, we suspected that each location has different characteristics affecting the productivity. Thus, the production data may have a spatial and hierarchical structure. For fitting a linear regression using the ordinary techniques, we are required to make some assumptions about the nature of the residuals i.e. independent, identically and normally distributed. However, these assumptions were rarely fulfilled especially for data that have a spatial and hierarchical structure. We worked out the problem using mixed effect model. This paper discusses the model construction of productivity and several characteristics in the production line by taking location as a random effect. The simple model with high utility that satisfies the necessary regression assumptions was built using a free statistic software R version 2.6.1.

PERANCANGAN DAN IMPLEMENTASI SISTEM PENGUKURAN KINERJA DENGAN METODE INTEGRATED PERFORMANCE MEASUREMENT SYSTEMS (Studi Kasus: Jurusan Teknik Mesin Universitas Mataram) Bambang Syairuddin; Patdono Suwignjo; I Made Suartika
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 9 No. 2 (2007): DECEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

To assure the quality of education in the Department of Mechanical Engineering, we need to design an integrated performance measurement system. For that purpose, we used the IPMS (Integrated Performance Measurement Systems) method. Using the IPMS method, Key Performance Indicators (KPIs) of the Department of Mechanical Engineering were determined by pursuant to stakeholder requirement through four steps. Those are identifying the stakeholder requirement, external monitor, stipulating objectives, and identification of KPIs. Performance measurement system with the IPMS method in the Department of Mechanical Engineering of Mataram University can be identified into 38 KPIs grouped in 9 criterias of performance of the Department of Mechanical Engineering, that are curriculum, student, financial, human resources, administration academic, teaching and learning, alumnus, evaluation and operation, and external party. Abstract in Bahasa Indonesia : Untuk menjamin kualitas pendidikan di Jurusan Teknik Mesin, diperlukan sebuah rancangan sistem pengukuran kinerja (SPK) yang terintegrasi dengan metode IPMS (Integrated Performance Measurement Systems). Dengan metode IPMS, Key Performance Indicators (KPI) Jurusan Teknik Mesin ditentukan berdasarkan stakeholder requirement melalui empat tahapan yaitu; identifikasi stakeholder requirement, external monitor, penetapan objectives, dan identifikasi KPIs. Hasil perancangan SPK di Jurusan Teknik Mesin Universitas Mataram, dapat mengidentifikasi 38 KPIs yang dikelompokkan dalam 9 kriteria kinerja Jurusan Teknik Mesin, yaitu; kurikulum, mahasiswa, finansial, SDM, administrasi akademik, proses pembelajaran, alumni, evaluasi dan pengendalian, dan external party. Kata Kunci : Sistem Pengukuran Kinerja, IPMS, Teknik Mesin Unram.

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