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Jurnal Sistem Teknik Industri
Published by Universitas Sumatera Utara
ISSN : 14115247     EISSN : 25279408     DOI : -
Core Subject : Science, Engineering,
Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering
Jurnal Sistem Teknik Industri (JSTI) of Universitas Sumatera Utara, Faculty of Engineering, Department of Industrial Engineering, was published in 1998. Until now, the number of publications has reached 21 volumes, each of which is published by TALENTA Publisher twice a year . Each volume has two publishing numbers, namely January issue numbers and July issue numbers.
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Articles 222 Documents
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Risk Mitigation Design in the Production Process of Packaged Fruit Juice Drinks Using a Fuzzy Based House of Risk (HOR) Approach Lufika, Raihan Dara; Sentia, Prima Denny; Ilyas; Erwan, Friesca; Andriansyah; Muthmainnah, Annisa
Jurnal Sistem Teknik Industri Vol. 24 No. 2 (2022): JSTI Volume 24 Number 2 July 2022
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v24i2.8498

Abstract

Agro-industry is a sector that has quite diverse development potential, especially in the field of processing. One of them is processing fruit into fruit juice drinks. Nozy Juice is classified as an advanced MSME, but its competitive level is still lower than other agro-industry. This is because almost all of Nozy Juice's production activities are still done manually, giving rise to various risks that have an impact on decreasing the company's productivity level. To reduce this risk, a fuzzy-based House of Risk (HOR) approach is used which aims to identify the most critical risk agents. Then the risk mitigation design is carried out as an action plan. The essential risk of the 15 risk agents was a human error with an Aggregate Risk Potential (ARP) percentage of 24.275%. Furthermore, a risk mitigation design is carried out for 10 risk events. This is expected to minimize risks in the production process of packaged fruit juice drinks at Nozy Juice.
Analysis of Social Distancing Variables to Prevention of Positive Cases of Covid-19 Using Path Analysis Method Atikno, Welly; Kurnia, Hibarkah; Indra Setiawan; Setiawan, Bambang; Nugroho, Bayu Hari; Wahid, Muhammad
Jurnal Sistem Teknik Industri Vol. 24 No. 2 (2022): JSTI Volume 24 Number 2 July 2022
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v24i2.8499

Abstract

Prevention of Covid-19 is important for research in order to reduce positive cases that occur in Indonesia. One of the popular research is using analytical method. The purpose of this study was to determine the relationship between work activity behavior, government and community regulations and social distancing as a mediator in preventing an increase in Covid-19 cases in West Java. This research method uses path analysis model. Social distancing variables directly have a positive and significant impact on preventing positive cases of Covid-19, meaning that with social distancing the spread of the Covid-19 virus can be reduced. The effect of social distancing on the prevention of positive cases of Covid-19 is 87% and the remaining 13% is due to the influence of other factors. Based on the four variables used as predictors of the prevention of Covid-19 cases, the social distance variable is the strongest variable that affects the prevention of positive cases of Covid-19 compared to the other three variables. Social distancing is very important to reduce the spread of Covid-19 cases. The implication of this research shows that awareness of people's behavior by keeping a distance is very important to prevent the Covid-19 virus.
The Effect of Work Discipline on Employee Productivity Hutauruk, Friska Juliana; Matondang, Rahim; Pujangkoro, Sugiharto
Jurnal Sistem Teknik Industri Vol. 24 No. 2 (2022): JSTI Volume 24 Number 2 July 2022
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v24i2.8500

Abstract

The workforce has an important role in increasing production at PT. XYZ. The contribution of labor is interpreted into the resulting productivity. Therefore, it is important to know what variables can affect labor productivity. in this study using work discipline variables to see its effect on employee productivity. The results obtained that work discipline has a positive and significant effect on employee productivity, which is 66.70%. and 33.30% possibility of being influenced by other variables not included in this case.
The Measurement Of Employee Performance With A Human Resource Scorecard Methods: A Study Case in PDAM MEDAN Siregar, Khairun Nissa; Sinulingga, Sukaria; Sembiring, Meilita Tryana
Jurnal Sistem Teknik Industri Vol. 24 No. 2 (2022): JSTI Volume 24 Number 2 July 2022
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v24i2.8566

Abstract

The success of an organization or company in carrying out tasks with the aim of realizing the company's vision, mission, and goals can be seen from the performance of its human resources. So far, PDAM Tirtanadi's employee performance measurement is still focused on the financial aspect and based on a preliminary questionnaire, employee performance is in the poor category. So that this research has the aim of designing indicators and measuring employee performance with the Human Resource Scorecard (HRSc) approach. HRSc is a performance measurement based on 4 perspectives, namely finance, employees, internal business processes, and growth. From the results of data collection and processing, 16 indicators and 18 key performance indicators (KPI) were obtained, so that by using the Likert scale method and questionnaire in each perspective, the measurement value was 3.385 with a less category.
Inventory Optimization Model Design with Machine Learning Approach in Feed Mill Company Nasution, Alfian Aziz; Matondang, Nazaruddin; Ishak, Aulia
Jurnal Sistem Teknik Industri Vol. 24 No. 2 (2022): JSTI Volume 24 Number 2 July 2022
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v24i2.8637

Abstract

This article aims to address the impacts that companies can have with the application of machine learning to carry out their demand forecasts, knowing that a more accurate demand forecast improves the performance of companies, making them more competitive. The methodology used was a literature review through descriptive, qualitative and with bibliographical surveys in International Journal from 2010 – 2022 by different authors. Findings show that the references prove that demand forecasting with the use of machine learning brings many benefits to organizations, for example, since the results are more accurate, there is better inventory management, consequently customer satisfaction for having the product at the right time and place. Further, this article concludes and suggests that the use of machine learning is able to identify variables that affect the demands, with this it makes a forecast closer to reality and helps managers to make more accurate decisions, improving strategic planning and supply chain management. of company supplies.
The Design And Responses Of Horses On Polimeric Composite Horseshoes Syam, Bustami; Muttaqin, Maraghi; Tantono, Julius; Eddo, Eddo; Sandry, Febri
Jurnal Sistem Teknik Industri Vol. 24 No. 2 (2022): JSTI Volume 24 Number 2 July 2022
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v24i2.8664

Abstract

Horseshoe is used to avoid the failures of horse's hooves due to extreme impact and wear loads. The horse's hooves are repeatedly subjected to loadings during walking, trotting, running and jumping. In this research, we introduce a newly developed horseshoes made of polymeric composite materials. The horseshoes are placed inside the leather boot; it is a specially designed for horse. The process of making horseshoes and horse boots were discussed and the responses of the horse shoes as well as horses were analyzed. The horses were subjected to a series of testing, e.g., walking, trotting, and running. The result of the tests indicate that horseshoes and horse boots are quite strong, light, and safe to be used on horses. The response of horses shows that the horseshoe and boots are quite comfortable for them. This can be seen because there are no significant behavioral changes of the horse before and after wearing the boot. After being used to, it was shown that there is no damage or crack of the horseshoe. Therefore, it can be concluded that the composite horseshoe is safe and good to be used as horseshoe material.
Strategic Planning Based on the Impact of Social Support and Social Trust on COVID-19 Risk Response in Formal and Informal Workers Nisa Aprilia, Karina; Muslim, Erlinda
Jurnal Sistem Teknik Industri Vol. 25 No. 1 (2023): JSTI Volume 25 Number 1 January 2023
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v25i1.8506

Abstract

The COVID-19 pandemic has occurred throughout the world, and also in Indonesia. The government try to reduce the spread of COVID-19 by implementing various policies such as the large-scale social restriction (PSBB) policy, as well as other related policies. However, this policy has not been effective in view of the level of the spread of COVID-19 which has not decreased. Lack of public awareness is the cause of the spread of COVID-19 in Indonesia. For this reason, this study examines the effect of social support and social trust on the efficacy response to COVID-19 using the structural equation modeling (SEM) method. This factor was chosen because social support is an important aspect of the life of Indonesian society. This research was conducted on formal and informal workers, because workers are still required to have activities outside the home. The results show that social support and social trust are more influential on formal workers than informal workers. Strategy recommendations are compiled based on literature studies. After that, the weighting was done by using a relationship matrix. The results of the relationship matrix are seven prioritized strategies for formal workers, and three prioritized strategies for informal workers.
Implementation of 5S in Improving of Palm Oil Mill Working Environment Syahputri, Khalida; Rizkya, Indah; Meilina Sari, Rahmi; Lo, Albert
Jurnal Sistem Teknik Industri Vol. 25 No. 1 (2023): JSTI Volume 25 Number 1 January 2023
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v25i1.8641

Abstract

A work environment describes a place for employees affect them to do their tasks. A good work environment will certainly make employees do and spend all their energy and mind to work optimally. A comfortable feeling of the work environment can reduce boredom at work. This comfort feelings have an impact on increasing motivation and producing employee job satisfaction. The condition of the working environment in palm oil industry is currently classified as messy where there are still some tools scattered on the factory floor, there is mud and slippery puddles in various places such as floors or stairs. Conditions like this certainly need to be repaired immediately to avoid the risk of work accidents and increase employees' comfortable. Improvement of working environment conditions can be done by various methods, one of the methods is 5S method. 5S spelling as (Seiri, Seiton, Seiso, Seiketsu, Shitsuke) is one of the effective tool in management to improve the work culture of workers and the conditions of the work environment in a factory. Based on the evaluation results, the evaluation categories of 5S implementations are Seiri of 16 score, Seiton of 16 score, Seiso of 9 score, Seiketsu of 8 score, Shitsuke of 7 score. The results of this total score show the 5S value of palm oil mill is in the average score of 56 total score.
Proposed Design of Sewing Process Improvement to Minimize Polyester Technical Sportswear Product Defect at PT. X Based on The DMAIC Method Approach Achmad, Fandi; Yustiana Lubis, Marina; Nugrahaini, Yunita
Jurnal Sistem Teknik Industri Vol. 25 No. 1 (2023): JSTI Volume 25 Number 1 January 2023
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v25i1.9204

Abstract

Various companies want to improve product quality and process speed for customer satisfaction in the current era, including PT. X. Problems at PT. X is the number of defects that exceed the company's tolerance limit. The methodology used is a structured DMAIC method to identify the root causes of defects and resolve them. This study aimed to reduce defects in sportswear products caused by problems in the sewing process. The results showed that the problem in the sewing process was due to the process performance that still did not meet the standard process requirements, so the resulting output did not match the company's specifications. Therefore, it is necessary to design an alarm timer integrated with the sewing machine to minimize the frequency of defects in the sewing process. The design of the alarm timer uses the Reverse Engineering design method, which can minimize defects in the sewing process and increase the capability of the PT. X process.
Macro Ergonomic Analysis and Design for Optimizing the Work Environment : A Literature Review Suci Ayu Lestari; Nurul huda, Listiani; Ginting, Rosnani
Jurnal Sistem Teknik Industri Vol. 25 No. 1 (2023): JSTI Volume 25 Number 1 January 2023
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v25i1.9286

Abstract

The purpose of this literature is to understand the application of macroergonomics in various fields. Macroergonomics is the study of work systems which include organizational structures (complexity, formalization, centralization, policies, and processes) with a socio-technical approach used to improve work systems. The method used is a thematic analysis of articles on the application of macroergonomics in various industries. Based on the results of the article review, the process of implementing macroergonomics is analysis, design, implementation, control, and evaluation. All review articles carry out macro ergonomics analysis and design within the scope of the work system as a whole but do not intervene in all factors/problems. The reviewed articles show that the intervention is carried out only on a few factors, where human and organizational factors are always involved. The application of macroergonomics can achieve many goals at once that are beneficial to organizations, workers, and even consumers. The highest frequency of macro ergonomics objectives in consecutive review articles was: quality, occupational health, safety, work existence, productivity, efficiency, and effectiveness.

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