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All Journal Jurnal Teknik Mesin Jurnal Titra Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Journal of Economic, Bussines and Accounting (COSTING) International Journal of Industrial Research and Applied Engineering Conference Proceedings International Conference on Education Innovation and Social Science Matrik: Jurnal Manajemen, Strategi Bisnis, Dan Kewirausahaan

I Nyoman Sutapa

Industrial Engineering Department, Petra Christian University

Author-ID : 2791673

Aerospace Engineering Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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CASE STUDIES OF USE OF DESIGN OF EXPERIMENTS IN MATERIAL RESEARCH Salil Kumar Roy; I Nyoman Sutapa
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 5 No. 1 (2003): JUNE 2003
Publisher : Institute of Research and Community Outreach - Petra Christian University

The paper describes principles of factorial and fractional factorial design of experiments. The various ways of analysing data obtained by these procedures are shown via four case studies. Yates method was followed in case 1 where the effect of anode type, carbon content of steel, temperature, and agitation on cathodic protection of steel in seawater, on current density, was studied. In case 2, a glass was formulated within 10 constituante melted, quantity water and tested for flow caracteristics, from the result the factor effect was calculated. In case 3, analysis of results is done in a very simple way. In this case, the effect of carbon content, surface condition, temperature, and agitation on the corrosion of steel in seawater was studied. In case 4, the effect of eleven constituents on acid resistance of a cast iron enamel has been studied through sixteen experimental compositions. This case gives a method to find out which of the sixteen experimental compositions is nearest to a target value.

STUDI TENTANG TRAVELLING SALESMAN DAN VEHICLE ROUTING PROBLEM DENGAN TIME WINDOWS I Nyoman Sutapa; I Gede Agus Widyadana; Christine Christine
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 5 No. 2 (2003): DECEMBER 2003
Publisher : Institute of Research and Community Outreach - Petra Christian University

The article shows the study of model development of travelling salesman problem. Three models are studied, i.e. travelling salesman problem with time windows, vehicle routing problem, and vehicle routing problem with time windows. Abstract in Bahasa Indonesia : Dalam artikel ini dipaparkan kajian mengenai pengembangan model travelling salesman problem. Ada tiga model yang dikaji yaitu travelling salesman problem dengan time windows, vehicle routing problem, serta vehicle routing problem dengan time windows. Kata-kunci: travelling salesman problem, vehicle routing problem, time windows.

FUZZY INFERENCE SYSTEM MODELING FOR BED ACTIVE CARBON RE-GENERATION PROCESS (CO2 GAS FACTORY CASE) S. Febriana; M.D. Kurniawati; Iwan Halim Sahputra; I Nyoman Sutapa
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 7 No. 2 (2005): DECEMBER 2005
Publisher : Institute of Research and Community Outreach - Petra Christian University

Bed active carbon is one of the most important materials that had great impact in determining level of impurities in production of CO2 gas. In this particular factory case, there is unavailability of standard duration time of heating and cooling and steam flow rate for the re-generation process of bed active carbon. The paper discusses the fuzzy inference system for modeling of re-generation process of bed active carbon to find the optimum setting parameter. The fuzzy inference system was build using real historical daily processing data. After validation process, surface plot analysis was performed to find the optimum setting. The result of re-generation parameter setting is 9-10 hours of heating process, 4.66-5.32 hours of cooling process, and 1500-2500 kg/hr of steam flow rate.

PENINGKATAN JAMINAN KUALITAS ASSEMBLY LINE (Studi Kasus di Industri Otomotif) Halim Junaidi; Arigraha Santoso; I Nyoman Sutapa; Jani Rahardjo
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 7 No. 2 (2005): DECEMBER 2005
Publisher : Institute of Research and Community Outreach - Petra Christian University

The paper presents the improvement of quality assurance at an automotive industry which produces multi-purpose vehicle. Their multi-purpose vehicle is a global product, which means that it should concern not only domestic market demand but also international market demand and specification. Thus to maintain customer satisfaction on product quality, one of the efforts can be done to improve quality assurance level is by implementing Quality Assurance Network activity. Abstract in Bahasa Indonesia : Artikel ini membahas peningkatan jaminan kualitas assembly line di industri otomotif yang memproduksi kendaraan niaga. Kendaraan ini adalah produk yang bertaraf global, artinya kendaraan niaga yang harus mampu memenuhi bukan hanya permintaan pasar domestik melainkan juga spesifikasi dan permintaan pasar mancanegara. Oleh sebab itu untuk tetap dapat mempertahankan kepuasan konsumen terhadap kualitas produk, salah satu upaya yang dapat digunakan meningkatkan jaminan kualitas perusahaan adalah dengan mengimplementasikan aktivitas quality assurance network. Kata kunci: jaminan kualitas, aktivitas quality assurance network.

KOMITMEN DAN KAPABILITAS UNTUK MENINGKATKAN KINERJA REVERSE LOGISTICS I Nyoman Sutapa
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 11 No. 2 (2009): DECEMBER 2009
Publisher : Institute of Research and Community Outreach - Petra Christian University

Artikel ini mengkaji pengaruh pengorganisasian dan pemanfaatan teknologi logistic dalam pengelolaan reverse logistics di perusahaan manufaktur penghasil barang/kemasan plastik terhadap kapabilitas inovasi dan komunikasi perusahaan dalam meningkatkan kinerja reverse logistics perusahaan. Analisis yang digunakan adalah Structural Equation Modeling dengan menggunakan program SmartPLS. Hasil penelitian menunjukkan bahwa pengelolaan reverse logistics melalui alokasi anggaran dan pembentukan unit pengelola tersendiri disertai pendayagunaan teknologi, terutama pertukaran data secara elektronik, mampu meningkatkan kapabilitas inovasi, khususnya kemampuan kustomisasi dan fleksibilitas perusahaan dalam meningkatkan kinerja reverse logistics, dalam hal ketepatan waktu dan biaya operasional yang rendah. Di sisi lain, kapabilitas komunikasi belum terbukti dapat memengaruhi kinerja reverse logistics dikarenakan kapabilitas yang dimiliki belum dimanfaatkan secara optimal.

Peranan Manajemen Puncak, Wakil Manajemen, dan Konsultan dalam Tahap Awal Penerapan Sistem Manajemen Mutu I Nyoman Sutapa
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 14 No. 1 (2012): JUNE 2012
Publisher : Institute of Research and Community Outreach - Petra Christian University

The success of implementing the quality management system (QMS) ISO 9001:2008 for the family companies that applying in the initial stage will be the beginning of the strategic competitiveness. To develop, implement, control, and improve the QMS, it required roles, responsibilities, and sufficient authority for implementing actors. In this study, five hypotheses put forward by processing 30 data samples from the two companies of truck and bemo, and motorcycle parts’s company. The results of hypothesis testing showed the successful application of SMM in the family companies that already implementing QMS in the initial stage, significantly influenced by the roles, responsibilities, and authority from top management, and bridged with the role and tasks of the management representative and companion consultant.

The Effect of Unreliable Machine for Two Echelons Deteriorating Inventory Model I Nyoman Sutapa; I Gede Agus Widyadana
Jurnal Teknik Industri Vol. 16 No. 2 (2014): DECEMBER 2014
Publisher : Institute of Research and Community Outreach - Petra Christian University

Many researchers have developed two echelons supply chain, however only few of them consider deteriorating items and unreliable machine in their models In this paper, we develop an inventory deteriorating model for two echelons supply chain with unreliable machine. The unreliable machine time is assumed uniformly distributed. The model is solved using simple heuristic since a closed form model can not be derived. A numerical example is used to show how the model works. A sensitivity analysis is conducted to show effect of different lost sales cost in the model. The result shows that increasing lost sales cost will increase both manufacture and buyer costs however buyer’s total cost increase higher than manufacture’s total cost as manufacture’s machine is more unreliable.

Inventory Routing Problem for Perishable Product with Dynamic Demand and Spoilage Rate Krisna Wahyudi; I Gede Agus Widyadana; I Nyoman Sutapa
International Journal of Industrial Research and Applied Engineering Vol 5, No 2: OCTOBER 2020
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/jirae.5.2.27-32

The paper presents an inventory routing problem for perishable products using dynamic demand and spoilage rate data. This problem has three main costs for the simulation criteria: holding inventory cost, routing shipment cost, and perishable product cost with a single supplier and many retailers. Instead of the problem, there are 2 set decision variables inventory level range and shipping route. The simulation uses a Genetic Algorithm method to find the minimum cost. It shows that the dynamic data demand can be optimized, and the dynamic demand data have bigger cost consequences than the static demand data

Desain Peta Strategi dan Pemantauan Sasaran Mutu Studi Kasus di Perusahaan Indoor Furniture Elizabeth Winona Felicia Indranatan; I Nyoman Sutapa
Jurnal Titra Vol 8, No 2 (2020): Jurnal Titra 8(2) Juli 2020
Publisher : Jurnal Titra

Show Abstract | Download Original | Original Source | Check in Google Scholar

Performance measurement is important for a company to assess the achievement of targets from its departments. Research was done at an international furniture company. The company is currently measuring work performance using quality target that have been set by management. The Balanced Scorecard (BSC) uses quality objectives and Key Performance Indicator (KPI) as the basis for measurement. The BSC design is carried out not only measures the financial aspects, but also non financial aspects. The BSC design is carried out in five departments, namely Quality Assurance (QA), Human Resource Development (HRD), production P1, logistics, and purchasing department. The result of design is the strategy map and the causal relationship between quality objectives. The causal relationship between quality objectives shows the quality objectives with the longest chain and the quality objectives which is the final goal. Analysis is carried out on the result of monitoring of quality targets with the longest chain so that problems are identified and can provide proposed solutions.

Upaya Penyeimbangan Beban Kerja Karyawan dengan Pendekatan Full Time Equivalent (FTE) di PT X Regasia Singkali; I Nyoman Sutapa
Jurnal Titra Vol 9, No 2 (2021): Jurnal Titra
Publisher : Jurnal Titra

Show Abstract | Download Original | Original Source | Check in Google Scholar

PT X is a shipping and logistic company that has been operating since 1970 in Surabaya City. One of the divisions in PT X is Division Y. The problem of Division Y is the workload imbalance between employees in one department. This research aims to measure the employee workload condition and provide suggestions to improve the workload balance among employees. This research uses the Full Time Equivalent (FTE) method, where the employee’s total workload will be compared to the total effective working time available. The results of measuring the six department workload of Division Y show that 25,7% of employees is underload, 62,8% of employees have a normal workload, and 11,4% of employees is overload. The workload improvements that carried out are proposing additional job to the underload employees, shifting job between employees, and updating the information system program. These improvements were able to improve the employee workload balance to 11% of underload employees, 86% of normal load employees, and 3% of overload employees.

Co-Authors Aditya Rivky Pratama The Agnes Yosephine Kosasih Alexander Marcel Putra Perdana Andreas Kristanto Nahot Arigraha Santoso Arvin Oktovianus Benedictus Rahardjo Billy Danuharjo Gani Caroline Esther Suhartono Chintya Frisca Novita Christian Wibisono Christine Christine Christofer Kenny Yandra Cristofer Javier Dhamma Prabha Dewa Edo Kurniawan Elizabeth Winona Felicia Indranatan Felicia Layrensius Fenny Nilawati Kusuma Fransiska Fransiska Gerald Gerald Gregorius Andrew Ang Halim Junaidi I Dewa Made Tastra Asrama I Gede Agus Widyadana I Gede Agus Widyadana I Gede Agus Widyadana I Gede Riana Ieneke Kathryn Kodrat Indriati Njoto Bisono Indriati Njoto Bisono Ivan Yosia Raharjo Jani Rahardjo Jani Rahardjo Jani Rahardjo Joan Cristopall Chandra Jonathan Albertus Gunawan Juliana Faluk Kelvin Irawan Krisna Wahyudi Lubalu, Anthonia M.D. Kurniawati Magdalena Wullur Melisa Chan Mohammad Sukri Bin Mustapa Natanael Tedjakusuma Natasya Graciella Bernadine Boediono Nathanael Andrew Hotma Nico Gabriel Sanjaya Olivia Harsono Prayonne Adi Raymond Andika Kopaloma Regasia Singkali Rianty Oshin Allo Bunga’ Richie Ruslim Ronan Yadi Sunarto Rudy Darmawan S. Febriana Salil Kumar Roy Steven Pringgo Tengku Riza Zarzani N Theofilia Jade Oroh Timotius Limanto Timotius Setyono Togar Panjaitan Victor Chiarouven Yosi Kurniawan

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