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All Journal Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Research Report - Engineering Science Jurnal Rekayasa Sistem Industri Journal of Engineering and Management in Industrial System Jurnal Optimasi Sistem Industri Jurnal Ilmiah Teknik Industri Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri SAINTEK: Jurnal ilmiah Sains dan Teknologi Industri Jurnal Teknik Industri Terintegrasi (JUTIN)
Carles Sitompul
Teknik Industri, Universitas Katolik Parahyangan
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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PENGEMBANGAN MODEL MANAJEMEN RANTAI PASOK ENERGI DI INDONESIA Carles Sitompul; Alfian Alfian; Kinley Aritonang
Research Report - Engineering Science Vol. 2 (2014)
Publisher : Universitas Katolik Parahyangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1251.676 KB)

Abstract

Penelitian ini adalah penelitian ekplorasi untuk mengidentifikasi dan mengembangkan model manajemen rantai pasok energi bagi perusahaan-perusahaan dengan konteks kebijakan danlingkungan di Indonesia. Tujuan yang ingin dicapai adalah teridentifikasinya alternatif-alternatif manajemen rantai pasok energi bagi perusahaan di lihat dari berbagai aspek yang meliputi: sumber energi, lokasi sumber energi, serta teknologi penyimpanan energi yang memberikan hasil yang efisien dalam rangka pencapaian rantai pasok yang sustainable, serta terbangunnya model manajemen rantai pasok energi yang memungkinkan perusahaan untuk menerapkannya secaraefisien dan efektif.Studi literatur akan dilakukan dalam rangka pengembangan dasar teori serta kerangka teoritis untuk mencapai tujuan penelitian. Wawancara dan survey akan dilakukan pada perusahaan-perusahaan yang ada di Indonesia, khususnya Jawa Barat dan Jakarta sebagai bagian dari usaha untuk mengidentifikasi pola-pola manajemen rantai pasok, khususnya pemenuhan energi di perusahaanperusahaan tersebut. Pengolahan data secara kualitatif dilakukan untuk mengolah data hasil wawancara serta survey tersebut. Penyusunan kuesioner penelitian selanjutnya dilakukan untuk mengukur model manajemen rantai pasok yang ada berdasarkan kerangka teoritis dan hasil wawancara. Langkah berikutnya adalah pengolahan data kuantitatif untuk mengembangkan model manajemen rantai pasok energi yang efisien dan efektif.Output atau hasil yang diharapkan dari penelitian ini adalah adanya alternatif manajemen rantai pasok energi serta terbangunnya model manajemen yang efisien dan efektif bagi pelaksanaan rantai pasok energi di Indonesia.  
Implementation of Inventory System by P (R, T) Model with Differenced Time of Known Priced Increase at PT Inti Vulkatama Y.M Kinley Aritonang; Carles Sitompul; Alfian Alfian
Research Report - Engineering Science Vol. 2 (2014)
Publisher : Universitas Katolik Parahyangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (271.771 KB)

Abstract

PT IntiVulkatama is a manufacturing company forthe tire retreading. The demand of the product is probabilistic causing the PT IntiVulkatama often experience shortages of raw material inventory (backorder) that could produce the company to lose the trust of its customers. Currently, PT IntiVulkatama address this problem using a forecasting method by looking at the demand of the past. PT IntiVulkatama must have a better inventory system that can minimize the expected total cost especially when facing the condition of differenced time of known priced increase for some of the raw materials.It is suggested that a good method for solving the problem is fixed order interval system. With this system, PT IntiVulkatama can perform a joint order with a certain time interval and the order size is adjusted to the difference between the maximum inventory and the amount of stock that is available when the order is made. In addition, PT IntiVulkatama should able to determine the sixe of special order when one or some of raw materials experiencing the differenced time of known priced increase for two raw materials.Based on data, PT IntiVulkatama should make a joint order for its six raw materials with a time interval of 1.12 weekwith each order size reaches the maximum of the inventory. The result of the price increase problem is a method of the differenced time of known priced increase with the savings value greater than zero. The study results in a recommendation that not to perform a special order due to the saving is less than the total cost.
Analisis Faktor-Faktor yang Menentukan Kelayakan Pemesanan Spesial Saat Terjadi Kenaikan Harga Material Kinley Aritonang; Alfian Alfian; Carles Sitompul; Cynthia Prithadevi Juwono
Research Report - Engineering Science Vol. 2 (2015)
Publisher : Universitas Katolik Parahyangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (487.943 KB)

Abstract

Pada kenyataannya, manajemen persediaan selalu berhubungan dengan biaya yang terdiri dari biaya pembelian, biaya simpan, biaya pemesanan, dan biaya stockout yang seluruhnya berhubungan dengan penyediaan bahan baku. Keputusan apapun yang dibuat dalam menangani persediaan harus didasarkan pada biaya total persediaan yang minimum. Pada kasus kenaikan harga bahan baku dengan waktu yang diketahui, maka sebaiknya dilakukan spesial pemesanan sebelum kenaikan harga bahan baku terjadi. Jumlah special pemesanan ditentukan berdasarkan penghematan maksimum yang akan diperoleh. Dalam kenyataannya, ada beberapa faktor yang mungkin mempengaruhi pelaksanaan spesial pemesanan. Beberapa faktor tersebut adalah modal, luas gudang, dan harga dari produk yang mengalami spesial pemesanan. Pada penelitian ini akan dilakukan analisa bagaimana pengambilan keputusan pemesanan spesial dilakukan dengan mempertimbangkan salah satu faktor, yaitu kapasitasgudang (luas gudang). Pada kenyataannya, manajemen persediaan selalu berhubungan dengan biaya yang terdiridari biaya pembelian, biaya simpan, biaya pemesanan, dan biaya stockout yang seluruhnya berhubungan dengan penyediaan bahan baku. Keputusan apapun yang dibuat dalammenangani persediaan harus didasarkan pada biaya total persediaan yang minimum. Pada kasus kenaikan harga bahan baku dengan waktu yang diketahui, maka sebaiknya dilakukanspesial pemesanan sebelum kenaikan harga bahan baku terjadi. Jumlah special pemesanan ditentukan berdasarkan penghematan maksimum yang akan diperoleh. Dalam kenyataannya, ada beberapa faktor yang mungkin mempengaruhi pelaksanaan spesial pemesanan. Beberapafaktor tersebut adalah modal, luas gudang, dan harga dari produk yang mengalami spesial pemesanan. Pada penelitian ini akan dilakukan analisa bagaimana pengambilan keputusanpemesanan spesial dilakukan dengan mempertimbangkan salah satu faktor, yaitu kapasitas gudang (luas gudang).
PENGEMBANGAN MODEL MANAJEMEN PEMANFAATAN ENERGI DI INDONESIA Carles Sitompul; Alfian Alfian; Kinley Aritonang
Research Report - Engineering Science Vol. 2 (2015)
Publisher : Universitas Katolik Parahyangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (820.689 KB)

Abstract

Penelitian ini adalah penelitian ekplorasi untuk mengidentifikasi dan mengembangkan model manajemen pemanfaatan energi oleh perusahaan-perusahaan dengan konteks kebijakan dan lingkungan di Indonesia. Penelitian ini merupakan bagian dari area penelitian yang lebih luas, yaitu model manajemen rantai pasok energi yang meliputi bukan hanya pemanfaatan atau konsumsi energi tetapi juga jaringan distribusi, transportasi serta sumber-sumber energinya. Penelitian ini juga merupakan kelanjutan dari penelitian sebelumnya yang juga membahas penggunaan energi di perusahaan manufaktur dan jasa pendidikan yang memanfaatkan energi listrik sebagai sumber energi utama. Penelitian ini akan memperluas cakupan obyek yang diteliti dengan memasukkan sumber energi yang lain, yaitu bahan bakar minyak. Selain itu faktor-faktor lain yang belum teridentifikasi seperti peraturan perundangan dan lingkungan akan diuji pengaruhnya terhadap pemanfaatan energi di sebuah perusahaan. Tujuan yang ingin dicapai adalah teridentifikasinya faktor-faktor yang mempengaruhi pemanfaatan atau konsumsi energi di Indonesia sehingga dapat dibentuk sebuah model manajemen yang menghasilkan efisiensi energi terutama pada sumber-sumber energi yang tidak terbarukan.Studi literatur dilakukan dalam rangka pengembangan dasar teori serta kerangka teoritis untuk mencapai tujuan penelitian. Wawancara dan survey dilakukan pada perusahaan-perusahaan yang ada di Indonesia, khususnya di Jawa Barat sebagai bagian dari usaha untuk mengidentifikasi pola-pola manajemen energi, khususnya pemanfaatan atau konsumsi energi di perusahaan-perusahaan tersebut. Pengolahan data secara kualitatif dilakukan untuk mengolah data hasil wawancara serta survey tersebut. Penyusunan kuesioner penelitian selanjutnya dilakukan untuk mengukur model manajemen konsumsi energi yang ada berdasarkan kerangka teoritis dan hasil wawancara. Langkah berikutnya adalah pengolahan data kuantitatif untuk mengembangkan model manajemen pemanfaatan energi yang efisien.Output atau hasil yang diharapkan dari penelitian ini adalah adanya alternatif manajemen pemanfaatan energi serta terbangunnya model manajemen yang efisien dan efektif bagi pelaksanaan rantai pasok energi di Indonesia.
PENGEMBANGAN DIMENSI KUALITAS LAYANAN E-BANKING DAN HUBUNGANNYA DENGAN KEPUASAN SERTA LOYALITAS KONSUMEN Alfian Tan; Paulus Sukapto; Carles Sitompul
Jurnal Ilmiah Teknik Industri Vol. 13, No. 1, Juni 2014
Publisher : Department of Industrial Engineering Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jiti.v13i1.305

Abstract

SERVQUAL is a service quality measurement model that is assumed to be widely applicable in every sector of service industry, yet research proves the opposite. Characteristic of customer in each segment can be a factor that causes differences in measurement model. According to that fact, this research is conducted to identify the difference of measurement model in each customer segment, especially in e-banking industry. Not only we identify the measurement model,  this research is done to confirm the relationship between 3 constructs as well, which are service quality, satisfaction, and loyalty. Several statistical method will be introduced here in relationship with segmentation process, measurement model identification, dan the three constructs' validation process. Segmentation process yields 2 customer segments which are people with high and moderate expectation to service quality. In the first segment, the measurement model consists of 4 quality dimensions, which are fullfilment, efficiency, assurance, and web design while there are 5 dimensions in the second segment which are fulfillment, responsiveness, information technology, assurance, and efficiency. There are also significant relationships among service quality, satisfaction, and loyalty.
Perancangan Performance Measuremen System (PMS) Perusahaan X di sentra Usaha Mikro Kecil dan Menengah (UMKM) Sepatu Cibaduyut Yohanes Dicka Pratama; Paulus Sukapto; Carles Sitompul
SAINTEK : Jurnal Ilmiah Sains dan Teknologi Industri Vol. 1 No. 2 (2017): JISTIN Volume 1 no 2
Publisher : Universitas Katolik Musi Charitas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32524/saintek.v1i2.129

Abstract

Micro Small and Medium Enterprises (MSMEs) have a very strategic role in a country. In addition to providing alternative employment, MSMEs also have good staying power in case of difficult economic emergencies. However, on the other hand there are many challenges that are heavy by businesses belonging to SMEs. Many of the same kind of businesses emerging are increasingly tighter. Performance Measurement System (PMS) is a control system of business conducted by the organization or company. With PMS the company can monitor effectively and efficiently the operational activities undertaken. However, not all performance measurement system frameworks can be implemented on a system, a UMKM. SMEs have different characteristics when compared with large businesses that have a better management system. Therefore, it is necessary to develop different approaches for designing performance measurement system applied to MSMEs. Company X is a company belonging to Micro Small and Medium Enterprises (MSMEs). Company X is in the center of footwear business Cibaduyut. Company X is a company engaged in the distribution of products produced by footwear pengerajin in the area Cibaduyut. The problem that Company X is experiencing is the ability to control and control the operational activities undertaken. The design of performance measurement system begins with indicators, key performance indicators (KPI). From this research is made 27 KPI.
PENERAPAN MODEL PREVENTIVE MAINTENANCE SMITH DAN DEKKER DI PD. INDUSTRI UNIT INKABA Hari Adianto; Carles Sitompul; Susana Susana
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 7 No. 1 (2005): JUNE 2005
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.129 KB) | DOI: 10.9744/jti.7.1.51-60

Abstract

The globalization era along with fast development of technology%2C industries must try to increase the quantity and quality of products that they have produced. The development of industrial products which have been increase continually need support from fluency of production process. In this case the industrial companies want a high availability system. PD Industri Unit Inkaba is one of the companies that moves in sector rubber technique industry. The company wants the production process go smoothly so that the company can keeps the existence and increases the product’s quality with cost efficiency and can competes with foreign markets. The smoothness of production process needs support from machines or production’s tools that have good condition. To keep the machines in good condition so that they will in the optimal condition when used%2C then the machines need to be maintained. M.A.J. Smith dan R. Dekker develop a model that combine availability model and preventive maintenance and consider the expected uptime and downtime of the system. This model is a 1 out of n system model%2C which has one operating machine and support by (n – 1) unit machine reserves. A 1 out of n system is also applicable to replaceable components. Smith and Dekker’s model gives the expected uptime and downtime of the system approximation that can gives good approximation of long term average operating cost. The results from decision of component preventive replacement age and optimal number of component reserve are expected to be able to keep the reliability system and be able to avoid the decease of availability system because of maintenance activity. Abstract in Bahasa Indonesia : Dalam era persaingan industri yang semakin global disertai perkembangan teknologi yang pesat%2C industri-industri terus berusaha meningkatkan kuantitas dan kualitas produk yang dihasilkannya. Perkembangan hasil industri yang semakin meningkat secara terus-menerus memerlukan dukungan proses produksi yang lancar. Dalam hal ini perusahaan industri menginginkan availabilitas sistem yang tinggi. PD Industri Unit Inkaba merupakan salah satu perusahaan yang bergerak dalam bidang industri barang teknik karet. Perusahaan menginginkan agar proses produksinya berjalan dengan lancar agar mampu mempertahankan eksistensinya dan meningkatkan kualitas produk serta efisiensi biaya agar mampu bersaing dengan pasar luar negeri. Kelancaran proses produksi membutuhkan dukungan mesin-mesin atau peralatan produksi yang berada dalam kondisi yang baik. Untuk menjaga kondisi dari mesin-mesin tersebut agar berada dalam keadaan yang optimal saat digunakan%2C maka diperlukan kegiatan perawatan pada mesin-mesin tersebut. M.A.J. Smith dan R. Dekker mengembangkan suatu model yang menggabungkan model availabilitas dan model perawatan pencegahan dengan memperhatikan uptime dan downtime dari sistem. Model ini merupakan model 1 out of n system%2C yaitu sebuah model yang terdiri dari satu mesin yang beroperasi dan didukung oleh (n-1) unit mesin cadangan. Model 1 out of n system juga dapat diaplikasikan pada komponen-komponen mesin. Model Smith dan Dekker memberikan perkiraan uptime dan downtime sistem sehingga dapat diperoleh perkiraan yang baik untuk rata-rata biaya operasi dalam jangka waktu panjang. Hasil penentuan umur penggantian pencegahan komponen dan jumlah komponen cadangan yang optimal diharapkan mampu menjaga keandalan sistem dan mampu menghindari menurunnya availabilitas sistem karena tindakan pemeliharaan. combine availability mode%2C preventive maintenanc.
Dynamic Scoring and Costing in the Orienteering Problem: A Model Based on Length of Stay Giovano Alberto; Carles Sitompul
Jurnal Optimasi Sistem Industri Vol. 22 No. 2 (2023): Published in December 2023
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v22.n2.p114-125.2023

Abstract

In today's travel and tourism landscape, the role of travel agents has become increasingly complex as they are challenged to explore a variety of potential destinations. More specifically, the complicated task of planning itineraries that truly satisfy travellers puts travel agents in a crucial role, increasing the complexity of itinerary planning. This complexity is compounded not only by the multitude of possible destinations, but also by non-negotiable constraints such as cost and time. To address these challenges, the orienteering problem represents a fundamental mathematical model that provides a theoretical basis for understanding the nuanced difficulties faced by travel agents.This study ventures into a novel iteration of the orienteering problem, with a particular focus on optimizing travel satisfaction based on length of stay. A notable aspect of this variant is the inclusion of time and cost constraints in the route determination process. Using an integer programming model, the satisfaction scores for each location are described by a diminishing returns function linked to length of stay, while the costs associated with each location follow a linear function influenced by the same parameter. The application of this model is in a hypothetical scenario with 32 nodes, with the calculations facilitated by the FilMINT solver. A sensitivity analysis examines time and cost constraints and shows their decisive influence on the optimization of travel routes. The results of this research contribute significantly to a strategic framework and provide travel agencies with the opportunity to create itineraries that not only meet practical limits but, more importantly, increase traveller satisfaction.
A FOOD LOSS BEHAVIOR MODEL FOR MICRO, SMALL AND MEDIUM ENTERPRISES IN AN AGRICULTURAL SUPPLY CHAIN Noor, Vicky Rizky; Octavia, Johanna Renny; Sitompul, Carles
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 13 No. 1 (2025)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

The study about supply chain is always interesting especially in the Micro, Small, and Medium Enterprises (MSMEs). This study is based on the phenomenon that MSME, especially from the production, post- harvest, and packaging section, is contributing the biggest food loss in a food supply chain in Indonesia. This paper tries to apply the extended theory of planned behavior as a framework to examine the behavior of MSME owners. The factors that are going to be examined are subjective norms, attitude towards behavior, perceived behavioral control, knowledge, spirituality, infrastructure, and price stability. The respondents of this study are the owners of MSME, especially the production, post-harvest, and packaging section of the food supply chain in West Java, Indonesia.
Usulan Perbaikan Untuk Perusahaan Fashion Berdasarkan Model Niat Beli Jonathan, Ryanto; Sitompul, Carles
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 4 (2023): Oktober
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i4.17281

Abstract

X is a bridal company. For the last three years, the income from party dress rental have decreased. The company suspects this is caused by the emergence of new competitors. The company has tried to make improvements. However, these improvements have no effect. Therefore, further research is needed to determine the factors that influenced purchase intention. The research model that’s been used conduct five variable. There are 113 data collected using questionaire. The data will be processed using smart-PLS 30-days trial software and use PLS-SEM method. The test results indicate that there are three variables that affect purchase intention. That variable is social network marketing, consumer engagement, and price consciousness. To make improvement, we used IPMA matrix to determine importance and performance level of each variable. The final result from the research is there are seven proposed improvement that has been accepted by the company.
Co-Authors Alberto, Giovano Ariningsih, Paulina Cynthia Prithadevi Juwono Dedy Suryadi Hari Adianto Hari Adianto Ida Bagus Deva Narswara Santosa Irma Felicia Iswari, Titi Johanna Hariandja Johanna Hariandja Johanna Hariandja Johanna Renny Octavia Hariandja Jonathan, Ryanto Kinley Aritonang Noor, Vicky Rizky Paulina Ariningsih Paulina Kus Ariningsih, Paulina Kus Paulus Sukapto Pratama, Yohanes Dicka Santosa, Ida Bagus Deva Narswara Setiawan, Fran Susana Susana Susana Susana Tan, Alfian ~ Yosefa ~ Yosefa, ~