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OPSI
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
ISSN : 16932102     EISSN : 26862352     DOI : https://doi.org/10.31315/opsi
Core Subject : Engineering,
Industrial & Manufacturing Engineering
Jurnal OPSI adalah Jurnal Optimasi Sistem Industri yang diterbitkan oleh Jurusan Teknik Industri UPN “Veteran” Yogyakarta sebagai wahana publikasi hasil karya ilmiah, penelitian rekayasa teknologi di bidang Teknik Industri, Sistem Industri, Manajemen Industri dan Teknologi Informasi.
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Articles 255 Documents
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Workload Analysis Using Cardiovascular Load and NASA-TLX Method Of Emergency Room Health Workers (Case Study: Rumah Sakit Tingkat III Brawijaya) Melani Pratiwi Munir Putri; Akmal Suryadi
OPSI Vol 15, No 1 (2022): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v15i1.6890

Abstract

Emergency Room (ER) at RS Tingkat III Brawijaya is the first work unit that patients visit when they need first aid with various complaints. Kinds of patients in emergency medical services RS. Tingkat III Brawijaya are patients at risk of dying who require rapid treatment, patients not at risk of dying but requiring rapid treatment, and patients with non-critical and non-urgent conditions. The demands of time and professionalism from the emergency room health workers, that are the doctors and nurses when on duty, can have implications for the emergence of physical and mental burdens, including muscle pain, headaches and stress. This research purposed to analyze the physical and mental workload of emergency room health workers using the Cardiovascular Load and NASA TLX methods. The calculation results show that 5 health workers have a CVL percentage above 30, which is a repair that is needed but not urgent. Then with the NASA-TLX method, it is known that 21 health workers have a High workload and 2 others have a Very High workload category.
The Influence of Knowledge Management and Organization Innovativeness on The Organizational Resilience: A Theoretical Framework Annisa Dewi Akbari; Didien Suhardini; Agung Sasongko
OPSI Vol 15, No 1 (2022): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v15i1.6585

Abstract

Covid-19 pandemic had a real negative impact on all sectors, including startup. More than half of total start-ups in Indonesia can’t survive the crisis caused by Covid-19 pandemic. This requires the organization to be able to develop its ability to survive. The answer to this challenge is organization resilience. Organizational resilience can anticipate potential threats, respond to unexpected events, and achieve sustainable growth. Through a recent literature study related to theory and conceptualization of organizational resilience, as well as considering contextual factors adapted to organizations, especially startup, this research succeeded in developing a theoretical model related to organizational resilience. The framework is built on three variables, namely organization resilience as the dependent variable, knowledge management as independent variable, and organization innovativeness as intervening variable, with 11 sub-variables, and four hypotheses. Furthermore, this framework can be an initial picture and insight for Chief Executive Officers (CEOs) of startup, to navigate organizations in dynamic environments, crisis situations, or in the midst of today's global competition
Design of A Flexible Table Height (Kafleks) with Quality Function Deployment (QFD) Method Ika Nurlela; Risma Fitriani
OPSI Vol 15, No 1 (2022): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v15i1.6758

Abstract

Humans have high mobility and various activities for each individual. The table is one of the supporting facilities in human activities. The table can have an important effect in terms of user mobility in using it. A table that is comfortable for users can provide a good and maximum effect for users in completing all their activities. The height of the table is one of the influential aspects in determining whether the table is comfortable or not for its users. This research is aimed at designing and developing a table product with high legs that can adapt to various conditions and activities carried out. The method used in this study is the Quality Function Deployment (QFD) method. The result of this study is that the adjustable table height has a degree of importance of 4 which means that this aspect is important for a table to have.
Applying AHP-TOPSIS Approach for Selecting Marketplace based on Preferences of Generation Z Wandhansari Sekar Jatiningrum; Sri Nastiti Andayani Sesanti Retno Utami; Wardatus Sholihah; Ashof Abdulmajid; Reinna Desstryani
OPSI Vol 15, No 1 (2022): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v15i1.6824

Abstract

The increasing ease of internet access leads to good opportunities for marketplace growth. The marketplace's popularity is gaining among many people, especially Generation Z, and makes the marketplace becomes their primary solution for online shopping. According to the massive amount of generation Z and their lives that get used to sophisticated technology, this generation can become the critical marketplace consumer in the upcoming years. This research examines the selection of generation Z’s preferences towards the marketplace using the AHP-TOPSIS approach. The selection was based on three criteria: service quality, information, and price. AHP approach was applied to calculate each criterion's weight, while TOPSIS was used to obtain the alternative ranking of marketplaces. The result shows that service quality becomes the most influential criterion for selecting marketplace platforms. The weight of each criterion is service quality of 0.425, information quality of 0.280, and price of 0.295. Shopee is chosen as the most suitable marketplace platform for Generation Z. The proposed model of this research can allow the business players to effectively select the suitable marketplace for selling their products targeted to Generation Z.
Rancang Bangun Pengering Buah Pinang Otomatis Menggunakan Pendekatan Quality Function Deployment (QFD) Tri Wahyudi; Ratih Rahmahwati; Silvia Uslianti
OPSI Vol 15, No 2 (2022): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v15i2.6289

Abstract

The processing of dried betel nut by the people of West Kalimantan consists of 2 stages, namely drying and stripping the betel nut. The drying process usually carried out by farmers is drying directly in the sun, and the smoking process uses fire to heat. The method of drying the areca nuts takes about 14-15 days. This study will examine the problems faced by farmers in the process of drying areca nuts. Based on the issue of drying areca nuts, it is necessary to have an alternative method of drying that is more efficient. Areca nut drying machine is an alternative to obtain dried betel nut relatively quickly with well-maintained fruit quality. The design of the areca nut drying machine is made based on the identification of farmers' needs. Identifying farmers' needs or desires will be an attribute of product development, and technical parameters are determined to meet these product attributes. The method that will be used is the Quality Function Deployment (QFD) method. The study results that priority attributes must be completed based on calculations in the planning matrix using QFD. The design of the areca nut has dimensions of 260 mm x 490 mm, with the specifications of the tool consisting of two main parts, namely an inner filter (a place for betel nuts) and a betel nut dryer.
Cover, Preface, Editorial Board, and Table of Contents Opsi Vol 15 No 2 December2022 Hasan Mastrisiswadi
OPSI Vol 15, No 2 (2022): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v15i2.8708

Abstract

Analysis of Workload and Deciding Workers Optimality at Powder Production Process using NASA-TLX method and KEP/75/M.PAN/7/2004 in PT. XY Ovi Sadewa; Mochammad Tutuk Safirin; Tranggono Tranggono
OPSI Vol 15, No 2 (2022): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v15i2.6874

Abstract

Excessive work fatigue felt by workers due to the addition of working hours or overtime, a less ergonomic work environment is felt by employees who work at PT. XY, workers complained about the large demands of the tasks they received with insufficient rest time, some workers remained focused and concentrated for a long time resulting in physical and psychological workloads on workers. To resolve the problem, a questionnaire was distributed to the entire population of 40 powder production workers using the NASATLX method with a focus on 6 indicators, namely mental needs, physical needs, time requirements, work performance, effort, and frustration levels as well as the KEP/75/M.PAN/7/2004. The purpose of this research is to analyze the workload of powder production workers, determine the dominant indicators based on the NASA-TLX method and determine the optimal number of workers based on KEP/75/M.PAN/7/2004. From this study, the results of the workload of 40 workers were 9 workers in the rather high category, 30 workers in the high category, and 1 worker in the very high category. The number of workers 40 is optimal but the workload is not good enough.
Statistical Process Control (SPC) and Fuzzy-Failure Mode and Effect Analysis (F-FMEA) Approaches to Reduce Reject Products in Wine Bottle Rack Production Process at PT Alis Jaya Ciptatama Nikma Wahyu Nurdaningsih; Elly Wuryaningtyas Yunitasari; Syamsul Ma'arif
OPSI Vol 15, No 2 (2022): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v15i2.7567

Abstract

PT Alis Jaya Ciptatama (AJC) is a company engaged in the furniture industry, where the products are exported. One of the products from PT AJC is a wine bottle rack. In the production of wine bottle racks at PT AJC, many product defects were found. Therefore, it is necessary to conduct further research to determine the quality of the product, so that the correct product quality improvement is obtained. The purpose of this study was to determine the limits of statistical control and the factors causing defects in wine bottle racks so that the quality improvement provided was right on target. The methods used in this research are Statistical Process Control (SPC) and Fuzzy Failure Mode and Effect Analysis (F-FMEA). SPC method is used to determine statistical control limits and factors causing product defects. The F-FMEA method is used to determine the priority of improvement in improving the quality of wine bottle racks. The results of the research related to the statistical control limits of the SPC method were obtained that the defective data were outside the statistical control limits. While the results of research related to the causes of product failure using the SPC method are human, machine, material, environmental, method, and measurement factors. Factors causing product failure were analyzed using the F-FMEA method so that improvement priorities were obtained, namely the lack of experience of workers with an FRPN value of 269.33. Improvements that need to be made by PT AJC include providing training to mill 1 workers and splitting the logs.
Layout Redesign to Eliminate Stagnation Using Blocplan to Increase Production Efficiency Danny Wicaksono; Indra Setiawan; Fitriana Lestari Hasan
OPSI Vol 15, No 2 (2022): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v15i2.8023

Abstract

The rapid growth of the automotive industry was also followed by growth in subsidiary companies. One of the subsidiary companies is a company that produces auto parts such as wheels. Sales volume in 2021 increased to more than 2 million products while for 2022 to April it was more than 1 million products. High demand is not accommodated due to inadequate production capacity, one of which is the machining area. This study aims to increase efficiency by redesigning the layout of the factory which is considered to increase production results in the machining area. The method used in this research is Block Layout Overview with Computerized Planning using Logic and Algorithm (Blocplan). The results showed that the redesign of the machining area could reduce stagnation by adding 1 unit of multi drill machine. Relayout in the machining area can reduce 93” time stagnation for the K2SA rear ABS type which can produce 2 outputs at once. The delay in the machining area can be reduced from 4,863 seconds to 0 seconds.
Quality Control Analysis Using Flowchart, Check Sheet, P-Chart, Pareto Diagram and Fishbone Diagram Khairun Nadiyah; Grita Supriyanto Dewi
OPSI Vol 15, No 2 (2022): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v15i2.7445

Abstract

SP Aluminum is engaged in the manufacturing industry by producing cooking utensils. In its application, SP Aluminum has tried to produce quality products to satisfy consumers. However, there are still defects that appear in its products. Another problem is the product defects have not been handled seriously by the company. Based on these problems, this study utilizes 5 quality control methods from seven tools: flowchart, check sheets, p-chart, Pareto diagram, and fishbone diagrams. This research is a quantitative qualitative with direct data collection through observation and interviews. The data taken is the product defect in Super Wok Number 12. There are 49 defects data that have been processed. From the results of the check sheet analysis, it was found that the intensity category of the product defects occurrence was obtained. Furthermore, control chart analysis show that there are some data that are out of control. Then, Pareto diagram analysis show the most dominant types of defects are holes, dregs, and pores. Finally, the factors of the absence of written SOPs, less thorough and less competent employees, poor working environment, lack of machine maintenance, poor handling of raw materials and inappropriate material handling processes were common causes of product defects.

Page 13 of 26 | Total Record : 255

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