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All Journal J@TI (TEKNIK INDUSTRI) Binus Business Review Syntax Literate : Jurnal Ilmiah Indonesia ComTech: Computer, Mathematics and Engineering Applications INAQUE: Journal of Industrial & Quality Engineering International Journal of Industrial Optimization (IJIO) Journal of Industrial Engineering & Management Research (JIEMAR) Journal of Industrial and Engineering System
Humiras Hardi Purba, Humiras Hardi
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Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Transportation

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Product and Service Quality Analysis: An Empirical Study of Customer Satisfaction in a Bakery Nindiani, Aina; Hamsal, Mohammad; Purba, Humiras Hardi
Binus Business Review Vol 9, No 2 (2018): Binus Business Review
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/bbr.v9i2.4257

Abstract

This research aimed to analyze the performance of a bakery located in Bekasi from the customer satisfaction on product and service quality. The method applied was Importance-Performance Analysis (IPA). IPA was conducted to determine the status of indicators related to product and service quality. It was to provide input to management in taking strategic actions. The sample size was 127 respondents. The used technique was non probability sampling. The results reveal that the priority of improvement is the taste indicator for product quality. On the other side, courtesy indicator is the priority for service quality that occupies position in Quadrant A. Hence, the bakery should emphasize those indicators as improvement priorities.
The Implementation of Quality Function Deployment (QFD) in Tire Industry Hadi, Hari Abdul; Purba, Humiras Hardi; Indarto, Kurnia Sigma; Simarmata, Rorio Gomgom Paska; Putra, Guntur Pratama; Ghazali, Dabith; Aisyah, Siti
ComTech: Computer, Mathematics and Engineering Applications Vol 8, No 4 (2017): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v8i4.3792

Abstract

This research had two main objectives. The first research objective was to make the right design of new product according to customer requirements with the implementation of Quality Function Deployment (QFD) in the tire industry. The second research objective was to enhance competitiveness based on the renewal of marketing strategy and consumer needs, non-explosive prohibition, non-slip tires, no bulgy, and competitive prices. The research was carried out by using costumer satisfaction rating by comparing with the competitor companies. Based on calculation using QFD method, it shows that split liner has the highest percentage of technical requirement in tire industry about 30,57%. The second factor is pattern design about 25,98%. Then, the third factor is compound technology about 22,68%. Therefore, the researchers can recommend several strategies for the quality improvement based on customer needs for the tire industry.
Students’ Satisfaction on Academic Services in Higher Education Using Importance-Performance Analysis Suroto, Suroto; Nindiani, Aina; Purba, Humiras Hardi
ComTech: Computer, Mathematics and Engineering Applications Vol 8, No 1 (2017): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v8i1.3776

Abstract

The objective of this research was to determine the students’ satisfaction level on the academic services provided by the accounting program at a private university in Jakarta and to evaluate attributes that should be improved. The data were obtained from questionnaires by using 5 quality dimensions. There are tangible, reliability, responsiveness, assurance, and empathy. Moreover, the data were processed by using Excel, SPSS 20, Customer Satisfaction Index (CSI) to determine the level of customer satisfaction, and also Importance-Performance Analysis (IPA) to determine the attributes of service be repaired and maintained. The results show that the CSI is 71%, which means that the majority of customers are satisfied with the performance of the service quality of accounting program. Meanwhile, the results of IPA indicate that the improvement priorities have two attributes in quadrant 1. They are the availability of space to support student activities and the availability of books and teaching materials related to the syllabus. These attributes are the top priority because the importance level is high while the performance level is low from the customers’ point of view.
The Implementation of ABC Classification and (Q, R) with Economic Order Quantity (EOQ) Model on the Travel Agency Oktaviani, Anggi; Subawanto, Heru; Purba, Humiras Hardi
ComTech: Computer, Mathematics and Engineering Applications Vol 8, No 1 (2017): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v8i1.3778

Abstract

To support customer loyalty programs, the travel agencies gave a souvenir to their customers. In one of the travel agencies in Jakarta, the demand for travel agency services could not be ensured. This had an impact on inventory items that were surplus to requirements. Inventory management was done by combining classifications ABC and (Q, R) with Economic Order Quantity (EOQ) model, which was usually used for uncertain demand. With “A” classification of the goods, two model (Q, R) scenarios were made and then simulated with software Arena. From these two scenarios, the results show that both have a tendency to decline, or the stockouts occur. However, the second scenario is more optimistic because a dummy variable is added the second scenario. Thus, the tendency is stable and does not decline.
Performance Maintenance Analysis Using QFD Method: A Case Study in Fabrication Company in Indonesia Rizlan, Wardah; Purba, Humiras Hardi; Sudiyono, Sudiyono
ComTech: Computer, Mathematics and Engineering Applications Vol 9, No 1 (2018): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v9i1.4456

Abstract

This research aimed to determine the needs and wants of production and management team to improve the machine and performance maintenance. Voice of the Customer (VOC) method was used to capture the needs and wants of production and management team. Meanwhile, the method of Quality Function Deployment (QFD) was used to translate the needs and wants of production and management to the technical requirement that should be done to improve machine and performance maintenance. Moreover, Total Productive Maintenance (TPM) was a part of technical requirement. From the result, it is known that long breakdown machine, huge inventory of spare part, and high cost of maintenance become the first of priority of maintenance team to achieve customer satisfaction. To develop the performance maintenance, the company should standardize the procedure, identify the critical spare part, reduce the time to purchase critical spare part, and increase lifetime of spare part.
Reducing The Operational Stop Time of Hauller Komatsu Hd465-7 by Using the Six Sigma’s Approach in PT X Purba, Humiras Hardi
ComTech: Computer, Mathematics and Engineering Applications Vol 7, No 2 (2016): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v7i2.2245

Abstract

An operational stop time is a condition where heavy equipment is not working as usual. It is important to avoid this condition since excessive idling wastes an enormous amount of fuel and money. However, the operational stop time of a dump truck Hauller HD465-7 is 2.83 minutes, which is far above the normal standard. This project aims to optimize the improvement of an operational stop time by using a Six Sigma method with optimize plan selection. This will return the operational stop time to the standard range within 1.25 to 1.65 minutes. These steps of define, measure, analyze, improve, and control are applied to the standardization process according to the rules and criteria established by the Six Sigma. The result found that the Six Sigma?s approach which was applied in PT X has reduced the cost from US$1,105,300 to US$963,000 every month. An improvement have been made to matching fleet by combining six fleet of dump trucks at driving speed of 22 km per hour and the average simulated haul distance was 2,000 meters.
PENGENDALIAN PERSEDIAAN MELALUI PENENTUAN PRODUK STRATEGI Dzikrillah, Nurul; Purba, Humiras Hardi; Suwazan, Dhonny; Wahjoedi, Noer
J@ti Undip : Jurnal Teknik Industri Volume 11, No. 3, September 2016
Publisher : Departemen Teknik Industri, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (194.736 KB) | DOI: 10.14710/jati.11.3.161-166

Abstract

Fokus utama pada pemenuhuan kebutuhan pelanggan saat ini adalah pebaikan kualitas terus-menerus dan pengendalian biaya. Persediaan yang tersimpan dalam jumlah besar hanya akan berakhir sebagai pemborosan. Memilih kebijakan yang tepat dan mempertahankan optimalnya tingkat persediaan merupakan tanggungjawab personel PPIC dalam menjaga kestabilannya.  Pemilihan kebijakan persediaan adalah sangat penting dalam menghadapi persaingan global yang intensif dan dinamis. Penelitian kali ini bertujuan untuk mengurangi nilai persediaan melalui penetapan strategi produk. Peneliti mengusulkan klasifikasi model persediaan berdasarkan perencanaan produksi dan demand pasar. Hasil yang didapat adalah nilai persediaan menurun tiap bulannya secara stabil dengan nilai persediaan untuk akhir tahun pada saat melakukan perhitungan inventory projection adalah sebesar 11.3 juta USD dimana mencapai target yang ditetapkan perusahaan yaitu sebesar 11.5 juta USD. Dan nilai DIO pada akhir tahun menjadi 75 hari.  ABSTRACT Quality improvement and costs control are vital to organizations for work performance enhancement and fulfilling customers’ requirement. Inventories that are stored in large amount of quantities will result in waste. It is a significant job for the inventory control personnel to select an appropriate policy and maintain an optimum level of inventory. The selection of inventory policy is very much important in the current scenario of intensive global competition and dynamic nature. The aim of this study is to reduce inventory value by determining strategy of each product. Inventory model classification was done based on production planning and total pending order. The result is inventory value reduce by the end of the year in 11.3 million USD which is achieve the target. The target was locked in 1.5 million USD. DIO value is 75 days by the end of the year.
QUALITY FUNCTION DEPLOYMENT FOR QUALITY PERFORMANCE ANALYSIS IN INDONESIAN AUTOMOTIVE COMPANY FOR ENGINE MANUFACTURING Jaqin, Choesnul; Rozak, Ahmad; Purba, Humiras Hardi
ComTech: Computer, Mathematics and Engineering Applications Vol 11, No 1 (2020): ComTech (Inpress)
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v11i1.6164

Abstract

The research aimed to improve the quality problem from the previous plant that contributed to the Rate of Quality (RQ) and Overall Equipment Effectiveness (OEE) value in Cylinder Block Machining (CBM). The research was done in one of an automotive company in Indonesia. It had been applying Total Productive Maintenance (TPM) with Kaizen spirit to make continuous improvement even though this company had reached a world-class level on the Japan Institute of Plant Maintenance (JIPM) standard. To express the needs and wants of the current machining plant and improve quality problems from the previous process in the casting plant, the researchers used Quality Function Deployment (QFD) method. From the result, it is known that shrinkage defect at a casting product becomes the priority of the kaizen team to achieve next process customer satisfaction in a machining plant to increase the RQ and OEE value. By implementing improvement based on the highest value of Technical Priorities (TP) from House of Quality (HOQ), it can increase RQ value in CBM from 96,4% in December 2018 to 97,9% in February 2019. Then, OEE value increases from 92% to 93% within two months.
THE APPLICATION OF QUALITY FUNCTION DEPLOYMENT IN CAR SEAT INDUSTRY Purba, Humiras Hardi; Sunadi, Sunadi; Suhendra, Suhendra; Paulina, Else
ComTech: Computer, Mathematics and Engineering Applications Vol 11, No 1 (2020): ComTech (Inpress)
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v11i1.6329

Abstract

One of the things that are considered important for the car is the seat. Car seats could be able to give effect to the driver to be more comfortable. As in the research paper carried out in the car seat industry that is with two objectives defined, first to ensure that the right design of new products is based on customer needs with the Quality Function Deployment (QFD) approach and the second is to improve competitiveness based on renewal marketing strategies and customer needs such as longevity, no wrinkles, not easy to get dirty, no flat pillows, and competitive prices. Customer satisfaction ratings are used in this study to compare with competitors. Based on calculations using the QFD method, this shows that the seat option has the highest percentage of technical requirements in the car seat industry around 27.39%. The second factor is material about 25.94%, and then the third factor is the characteristic attenuation of about 19.17%. Therefore, for continuous quality improvement purposes in the future, still, a lot of customer needs regarding the seat car need to be developed, so further discussion is needed for the future researcher with a suggestion to use another method such as  Multi-Criteria Decision Making (MCDM), Analytical Network Process (ANP) or Analytical Hierarchy Process (AHP) to combine with Quality Function Development (QFD).
The optimization of distribution and transportation costs for common good products Putra, Fibi Eko; Purba, Humiras Hardi; Anggraeni, Indah Astri
International Journal of Industrial Optimization Vol 1, No 2 (2020)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (294.961 KB) | DOI: 10.12928/ijio.v1i2.2368

Abstract

Transportation problems, which concerned in finding the minimum cost of transporting a single commodity from a given number of sources to a given number of destinations, are an integral part of the industrial system that has been around for a long time. The number of potential losses caused by transportation problems has made many parties take initiatives and efforts to solve those problems, usually by designing an optimal distribution model. The current study employs two methods named North West Corner (NWC) and Stepping Stone (SS) method in order to find distribution model with the most optimal costs for common good products. Through this research, the NWC method is utilized to generate initial model or solution, while the SS method is used afterward to find the optimal solution. According to it scheme, the result shows that through the NWC method there was cost reduction of $ 8,301, while the distribution model obtained from the Stepping Stone method resulted in a significant cost increased of $ 307,369. Thus, it can be concluded that the use of single method, namely NWC method, in this study provides much better results than using the combined NWC and Stepping Stone method.
Co-Authors Anggi Oktaviani Anggraeni, Indah Astri Atikno, Welly Aulia, Dinal Dhonny Suwazan Ghazali, Dabith Hadi, Hari Abdul Indarto, Kurnia Sigma Indra Setiawan Indra Setiawan Jaqin, Choesnul Manurung, Hasiholan marifah, lusi Maryani, Edna Mohammad Hamsal Nindiani, Aina Noer Wahjoedi, Noer Nurul Dzikrillah Paduloh Paduloh Pangestu, Gian Fahmi Paulina, Else Putra, Fibi Eko Putra, Guntur Pratama Rizlan, Wardah Rosdiana, Dina Rozak, Ahmad Simarmata, Rorio Gomgom Paska Siti Aisyah Subawanto, Heru Sudiyono Sudiyono Suhendra Suhendra Sukma, Dias Irawati Sunadi, Sunadi Suroto Suroto Trimarjoko, Aris Wirani, Ayu Puspa Yunita, Ika Yurrazak, Ikbal