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Jurnal 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 5 Documents

Search results for , issue "Vol. 2 No. 2 (2000): DESEMBER 2000" : 5 Documents clear

PENGEPAKAN PIPA BERAGAM DIAMETER KE DALAM SATU KONTAINER DENGAN MENGGUNAKAN SOLUSI HEURISTIK ALGORITMA GENETIKA Moses L. Singgih; Sundoro Untung
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 2 No. 2 (2000): DESEMBER 2000
Publisher : Institute of Research and Community Outreach - Petra Christian University

Literature on packing problems in general is extensive and too broad to be covered here. One of the packing problems is packing for cylindrical material, that is packing for pipe. To pack the pipes, a mathematical model non linier mixed integer programming will be applied to explain packing problem mathematically. A combined genetic algorithm and tabu list is suggested to solve the mathematical problem to obtain satisfactory solution in terms of packing configuration and computational time. The algorithm gives a good result in terms of space utilization and computational time. Abstract in Bahasa Indonesia : Literatur mengenai permasalahan pengepakan (packing problem) secara umum telah dipelajari secara intensif dan sangat luas pengembangannya. Salah satu masalah pengepakan yang ada adalah masalah pengepakan silinder. Pada tulisan ini diteliti mengenai masalah yang merupakan bagian dari pengepakan silinder yaitu pengepakan pipa. Dalam pengepakan pipa digunakan model matematis non linier mixed integer programming untuk menerangkan permasalahan pengepakan secara matematis dan menyarankan menggunakan metode heuristik algoritma genetika (genetic algorithm) dipadukan dengan penggunaan daftar iterasi tabu untuk menyelesaikan model matematis yang dihadapi sehingga solusi yang dihasilkan dapat memuaskan ditinjau dari sisi konfigurasi pengepakan dan juga efisien ditinjau dari waktu komputasi. Algoritma yang diusulkan pada tulisan ini mampu memberikan konfigurasi pengepakan pipa yang memuaskan bila ditinjau dari pemanfaatan ruangan dan waktu komputasi yang cepat. Kata kunci: pengepakan pipa, model matematis, Algotirma Genetika.

PENERAPAN JARINGAN SARAF TIRUAN UNTUK PERAMALAN Siana Halim; Adrian Michael Wibisono
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 2 No. 2 (2000): DESEMBER 2000
Publisher : Institute of Research and Community Outreach - Petra Christian University

Many methods have been developed to get the optimal result in forecasting. One of them that will be used in this paper is using Neural Network for forecasting. The result will be compared with GARCH(1,1) in the terms of Means Absolute Deviation (MAD) and Means Square Error (MSE). Besides that the accuracy and the power to damp the jump will be observed. The data is currency rate from 4 countries in Asia taken during the Asian Monetary Crisis from 1997 up to 1999 since the jump was happened in that series. Abstract in Bahasa Indonesia : Ada banyak metode yang telah dikembangkan untuk mencapai hasil yang optimal dari suatu peramalan. Salah satu yang akan diulas pada makalah ini adalah penggunaan Neural Network atau jaringan saraf untuk mendapatkan hasil peramalan yang diharapkan dapat meningkatkan optimasi dan akurasinya. Hasil dari metode ini akan dibandingkan dengan metode GARCH(1,1) dalam bentuk Means Absolute Deviation (MAD) dan Means Square Error (MSE). Selain itu dilakukan pula pengamatan terhadap peredaman jump (perubahan mendadak). Data yang digunakan adalah nilai tukar mata uang dari empat negara di Asia yang diambil selama krisis moneter di Asia. Kata Kunci: Backpropagation, MAD, MSE, GARCH(1,1), jump.

INSIDE CONTINUOUS IMPROVEMENT - A LITERATURE REVIEW Daniel Indarto Prajogo
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 2 No. 2 (2000): DESEMBER 2000
Publisher : Institute of Research and Community Outreach - Petra Christian University

This paper discusses the concept of continuous improvement (CI) by looking beyond what traditionally highlighted in literature concerning continuous improvement or Total Quality Management (TQM). The primary argument put forwarded in the discussion is that despite the undeniable positive results from CI practices, the way these activities are implemented, however, will lead to most programs becoming self-limiting. It needs to be asserted here that this paper is not intended to despise CI, rather, its purpose is limited only to provide a balance on the prevailing positive views toward CI.

PETA KENDALI X DENGAN UKURAN SAMPEL DAN INTERVAL PENGAMBILAN SAMPEL YANG BERVARIASI Pauline Astari Singgih; Siana Halim; Tanti Octavia
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 2 No. 2 (2000): DESEMBER 2000
Publisher : Institute of Research and Community Outreach - Petra Christian University

Shewhart X chart is widely used in statistical process control for monitoring variable data and has shown good performance in detecting large mean shift but less sensitive in detecting moderate to small process shift. X chart with variable sample size and sampling interval (VSSI X chart) is proposed to enhance the ability of detecting moderate to small process shift. The performance of VSSI X chart is compared with those of Shewhart X chart, VSS X chart (Variable Sample Size X chart) and VSI X chart (Variable Sampling Interval X chart). Performance of these control charts is presented in the form of ATS (Average Time to Signal) which is obtained from computer simulation and markov chain approach. The VSSI X chart shows better performance in detecting moderate mean shift. The simulation is then continued for VSSI X chart and VSS X chart with minimum sample size n 1=1 and n 1=2. Abstract in Bahasa Indonesia : Peta kendali X Shewhart telah umum digunakan dalam pengendalian proses statistis untuk data variabel dan terbukti berfungsi dengan baik untuk mendeteksi pergeseran rerata yang besar, namun kurang cepat dalam mendeteksi pergeseran rerata yang sedang hingga kecil. Untuk mengatasi kelemahan ini, diusulkan penggunaan peta kendali X dengan ukuran sampel dan interval pengambilan sampel yang bervariasi (peta kendali VSSI). Kinerja peta kendali X VSSI dibandingkan dengan kinerja peta kendali Shewhart, peta kendali X VSS (peta kendali X dengan ukuran sampel yang bervariasi), dan peta kendali X VSI (peta kendali X dengan interval waktu pengambilan sampel yang bervariasi). Kinerja peta kendali dinyatakan dalam nilai ATS (Average Time to Signal) yang didapatkan dari hasil simulasi program komputer maupun perhitungan Rantai Markov. Peta kendali X VSSI terbukti mempunyai kinerja yang lebih baik dalam mendeteksi pergeseran rerata yang sedang. Selain itu juga disimulasikan penggunaan peta kendali X VSSI dan peta kendali X VSS dengan ukuran sampel minimum n1=1 dan n1=2. Kata kunci: peta kendali X, variable sample size, variable sampling interval, ATS.

INOVASI PROSES DI SUATU INDUSTRI SANDAL Tandy Ivanno Handoyo; Kriswanto Widiawan
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 2 No. 2 (2000): DESEMBER 2000
Publisher : Institute of Research and Community Outreach - Petra Christian University

The problem which will be discussed is assembly lines in the shop floor, especially in sewing department. This department used line process system, that arised problems such as process jam, delay, wasting time of workers and too much holding materials. This research introduced process innovation, i.e. forming work-groups among workers. There are two alternative ideas which will be assessed. First, work-groups by process. Second, work-groups by complete line. After choosing the best idea, then the process was followed up with line balancing method with COMSOAL (Computer Method of Sequencing for Assembly Lines). The result showed that the second idea (complete line work groups) is better than the first one. Efficiency improvement is 29.2 % compared by the efficiency before the application of line balancing. Abstract in Bahasa Indonesia : Masalah yang akan dibahas adalah proses kerja pada lantai produksi di bagian jahit yang memberlakukan line process system. Proses ini menimbulkan kemacetan, keterlambatan, arus bolak-balik antar pekerja dan penumpukan material yang mengganggu produktivitas. Pada penelitian ini akan dilakukan inovasi proses pada sistem alur kerja dengan cara membentuk kelompok kerja. Ada dua ide alternatif kelompok kerja yang akan diuji, yaitu pengelompokan berdasarkan proses dan pengelompokan berdasarkan line utuh. Setelah terpilih ide alternatif terbaik, dilakukan keseimbangan lintasan dengan metode COMSOAL (Computer Method of Sequencing for Assembly Lines). Hasil penelitian menunjukkan ide terbaik adalah pengelompokan dengan line utuh. Setelah dilakukan keseimbangan lintasan, diperoleh peningkatan efisiensi sebesar 29,2% dibandingkan kondisi sebelum diterapkan keseimbangan lintasan. Kata kunci: inovasi proses, keseimbangan lintasan.

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