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Resy Kumala Sari
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resykumalasari@jes-tm.org
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LPPM Universitas Pahlawan Tuanku Tambusai Jalan Tuanku Tambusai 23 Bangkinang, Kampar, Riau, Indonesia Kode Pos: 28411
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Journal of Engineering Science and Technology Management
Published by Universitas Pahlawan Tuanku Tambusai
ISSN : -     EISSN : 28287886     DOI : 10.31004/jestm
Core Subject : Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering
Journal of Engineering Science and Technology Management is Jurnal Electronic that aims at the publication and dissemination of original research articles on the latest developments in all fields of engineering science and technology, including; Industrial Engineering, Mechanical Engineering, Material Engineering, Electrical and Electronics Engineering, Environmental Engineering, Civil Engineering, Management, Science, and Technology. Journal of Engineering Science and Technology Management is a International peer-reviewed journal dedicated to interchange for the results of high-quality research in all aspects of education and teaching. The journal publishes state-of-art papers in fundamental theory, experiments, and simulation, as well as applications, with a systematic proposed method, good review of previous works, expanded discussion, and concise conclusion. As our commitment to advancing education and teaching, the Journal of Engineering Science and Technology Management follows the open access policy that allows the published articles to be freely available online without any subscription.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 164 Documents
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Optimizing Pharmaceutical Logistics through Sales Forecasting of Black Cough Syrup 100 ml to Support Competitive Advantage at PT "X" Yulia M. Zai, Yovita; Syahfitri, Rini
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 1 (2025): Maret 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i1.225

Abstract

The pharmaceutical industry faces increasing pressure to maintain efficient supply chain operations amid dynamic market conditions. This study aims to identify the most accurate sales forecasting method to optimize pharmaceutical logistics and support the competitive advantage of PT “X” in producing Black Cough Syrup 100 ml. Using historical monthly sales data from August 2023 to January 2025, the study applies four quantitative forecasting techniques: Single Moving Average (SMA), Weighted Moving Average (WMA), Single Exponential Smoothing (SES), and Linear Regression. Forecast accuracy is evaluated using Mean Absolute Deviation (MAD) and Mean Absolute Percentage Error (MAPE). The results reveal that the 3-period SMA method yields the lowest forecast error (MAD: 954; MAPE: 21.09%) and is the most suitable model for the case. These findings highlight the strategic importance of integrating forecasting methods into pharmaceutical logistics to improve production planning, reduce stockout risks, and enhance customer satisfaction. By adopting accurate forecasting tools, PT “X” can strengthen interdepartmental coordination, improve inventory turnover, and build a sustainable competitive edge in the pharmaceutical market.
Risk Analysis of Musculoskeletal Disorders (MSDS) Among Fresh Fruit Bunch (FFB) Loaders at PT. XYZ Arsi, Fadli; Nasirly, Riri; Rahmat, Nuraini; Fachri Nasution; Hutasoit, Lidya Septriana
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 1 (2025): Maret 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i1.226

Abstract

This study aims to identify the risk of musculoskeletal disorders (MsDs) among fresh fruit bunch (FFB) loading workers at Afdeling 6 of PT. XYZ, Pelalawan. A quantitative approach was used with the Nordic Body Map (NBM) and Rapid Entire Body Assessment (REBA) as research instruments. The NBM results indicated that the most frequently reported discomfort was in the back, upper arms, wrists, and legs. Meanwhile, the REBA assessment showed that all workers fell into the high-risk category with scores ranging from 8 to 9, indicating the need for immediate changes in work methods. These findings suggest that manual FFB loading activities pose a significant risk of work-related injuries. Therefore, improvements in working posture, the use of ergonomic tools, and better work schedule arrangements are necessary to reduce the risk of muscle injuries among workers..
Analysis of Low Back Pain Prevention Strategies Based on Work Environment and Attitude Evaluation of Back Office Employees Mela Ardeline; Tarif, Eqiu Alkahfi; Malik, Yogi Septian
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 1 (2025): Maret 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i1.227

Abstract

The work environment affects employee health, especially in offices where most employees sit for long periods. One common health issue is lower back pain, which can be caused by poor posture, non-ergonomic chairs and desks, and uncomfortable work settings. Initial observations showed that many employees had improper sitting postures and workstations that did not meet ergonomic standards.This research aimed to identify the factors that cause lower back pain and to find strategies for prevention and treatment. The study was conducted at a health facility using a quantitative method with a cross-sectional approach. A total of 34 back-office employees participated as respondents. Data were collected through a lower back pain questionnaire, the RULA (Rapid Upper Limb Assessment) worksheet to assess work posture, interviews, and field observations.The results showed that 20 employees (58.82%) experienced lower back pain. Factors that contributed to this condition included age, length of service, physical workload (EMK), and work posture. Among these, work posture was found to be the most significant factor (p = 0.022).To reduce lower back pain among employees, several strategies were suggested: forming an Occupational Health and Safety (OHS) evaluation team, improving the work environment and systems, and providing education about correct posture and back pain prevention. These steps aim to create a healthier work environment and reduce future complaints of back pain.
Outpatient Patient Satisfaction With Radiology Services at Puri Husada Hospital, Tembilahan Malik, Yogi Septian; Ardeline, Mela; Eqiu Al Kahfi
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 1 (2025): Maret 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i1.228

Abstract

Hospital is a facility in the health sector that provides services in both the medical and non-medical fields in order to improve the degree of public health. Good service in the medical field, especially radiology services, can improve health status and community satisfaction. This study aims to determine the relationship between outpatient satisfaction with radiology services at Puri Husada Tembilahan Hospital. This type of research is analytic to see the relationship between one variable and another with a cross sectional approach. The number of samples was 200 respondents determined by incidental sampling technique. The statistical test used is the Chi Square Test. The results showed that the p value was 0.000. So it can be concluded that there is a relationship between outpatient satisfaction with radiology services at Puri Husada Tembilahan Hospital. It is expected that all officers at the Radiology Installation of the Puri Husada Tembilahan General Regional Hospital to maintain the level of patient satisfaction with the quality of service at the Puri Husada Tembilahan General Regional Hospital.
The Role of Work Discipline in Mediating the Influence of Work Environment and Leadership on Employee Performance at BUMDES Barokah, Pulau Lawas Village, Bangkinang District Habibie, Indra; Nurkholis; Akbar, Rahmad; Yetti, Dzulhijjah; Azhari
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 1 (2025): Maret 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i1.229

Abstract

This research aims to analyze how the work environment and leadership influence employee performance, with work discipline serving as a mediating factor. The study was conducted at BUMDes Barokah, located in Pulau Lawas Village, Bangkinang District. A quantitative approach was used, involving 30 employees selected through a census technique. Data collection was carried out using a questionnaire, and analysis employed multiple regression and Sobel test to examine the mediation effect. The results show that both the work environment and leadership have a positive and significant impact on employee performance. Additionally, work discipline significantly mediates the relationship between these two variables and performance outcomes. This indicates that a supportive work environment and effective leadership must be complemented by strong employee discipline to improve performance. The findings suggest that BUMDes management should focus on creating a conducive workplace and applying participative leadership while also strengthening work discipline to enhance productivity and achieve organizational goals.
Flood Overflow Identification in Parit Indah Using Hec-Ras Model Alkahfi Tarif, Eqiu; Malik, Yogi Septian; Ardeline, Mela
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 1 (2025): Maret 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i1.231

Abstract

Flooding is an annual problem and has a major impact on the condition of society both economically, socially and environmentally. Flooding generally occurs due to overflowing rivers or the inability of rivers to accommodate excess river water due to high rainfall. The purpose of the study was to see how flood overflow in Parit Indah is simulated into a model so that it can be visualized and planned for appropriate and efficient control or mitigation efforts. The results of the analysis with the HEC-RAS model with input data of the maximum value of rainfall intensity in the last 10 years and the planned discharge of 2, 4, 6, 8 and 10 years, the results of the model exceeded the volume of the drainage channel and caused flood overflow around the beautiful ditch when the maximum rainfall intensity occurred
Failure Analysis of Sludge Centrifuge Separator Machine Using Root Cause Analysis (RCA) at PT. X Nuraini Rahmad; Arsi, Fadli; Oktaviya, Trisna Dwi
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 1 (2025): Maret 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i1.232

Abstract

The palm oil processing industry is expanding rapidly, as seen from the increasing land conversion for oil palm plantations. One critical machine in the production process is the sludge centrifuge separator, which functions to separate oil from sludge. At PT. X, a breakdown in this machine disrupted production and reduced the effectiveness of oil separation. This study aims to identify the causes of damage or failure in the sludge centrifuge separator machine. The research employs Root Cause Analysis (RCA) with a fishbone diagram as the analytical tool and proposes improvements using the 5W+1H approach.The results show that damage is caused by several factors. Human factors include operator negligence, lack of discipline, and inadequate supervision. Machine-related issues involve poor maintenance, leaks, insufficient inspections, bearing wear, and excessive friction. Material factors include the entry of metal pieces and small stones into the machine. Method-related problems stem from non-compliance with SOPs and insufficient training. Environmental factors include damp conditions, poor air circulation, oil spills, noise, and an unclean production floor.This research highlights the importance of regular maintenance, improved training, strict SOP implementation, and better workplace management to minimize machine failure and ensure optimal.
Synthesis of Methyl Ester Sulfonate from Crude Palm Oil Based on Aluminum Oxide Catalyst Deli, Nur Asma; Hariani, Razita; Nasution, Rahma Sari
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 1 (2025): Maret 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i1.237

Abstract

Surfactant is a surface active agent that reduces the surface tension of a medium, because it has the ability to combine parts between different phases such as air and water or phases that have different polarity such as oil and water. One of the vegetable oils that has great potential to be used as raw material for the manufacture of Methyl Ester Sulfonate (MES) is CPO. This Final Project aims to determine the manufacture of MES from CPO with Na2S2O5 as a sulfonation agent and understand the effect of Al2O3 (aluminum oxide) catalyst concentration on the characteristics of MES produced. The preparation of methyl esters was carried out by two-stage esterification and transesterification reactions using methanol as the alcohol source with H2SO4 as the acid catalyst and NaOH as the base catalyst. Sulfonation was carried out at temperature, ratio of methyl ester to Na2S2O5 1:1, Al2O3 catalyst concentration of 0.5%, 0.75%, 1%, 1.25%, and 1.5% and reaction time of 5 hours. The best results were obtained from the treatment of 0.75% Al2O3 catalyst concentration with the quality of MES produced having a yield of 88.27%, pH 7.51, acid number 4.48 mgKOH/g, density 887 kg/m3 and sulfonate absorbance value 0.155.
Evaluation Study of The Existing Condition Of Drainage Channels In Bangkinang Kota District (Case Study: Petai River III) Hudin, M. Hisam; Adeswastoto, Hanantatur; Febryanto
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 1 (2025): Maret 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i1.238

Abstract

The development of the city followed by an increase in the population in Bangkinang City has resulted in the conversion of land functions into residential areas or offices, resulting in disruption of soil absorption capacity and increased surface runoff and resulting in flooding. This final project aims to analyze the ability of existing drainage channels to accommodate and flow flood discharge, analysis of maximum planned rainfall, analysis of planned flood discharge with a return period. The research method used is the method of field data and data analysis. The data used are primary data and secondary data. The discharge value of the existing channel with the planned discharge value is analyzed based on hydrological analysis and hydraulic analysis. This study uses the Log Person Type III distribution because it gives the best results compared to other distributions. Results The calculated rainfall intensity for the 10-yearreturn period is 109.0159 mm/hour. The design discharge is calculated based on the Rational method, it is known that the 10 year return period is Q = 26.3266 m3/s. From the dimensional analysis it turned out that the drainage channel for Jalan Mayor Ali Rasyid was not able to accommodate the discharge of the planned channel, and a width of 1.2 m was added along the flood area, and the channel could accommodate the runoff that occurred in the Petai III river.
Mortality Rate Analysis Covid-19 Patients Based on Condition Comorbidities with Approach K-Means Clustering Yanto, Adri; Margi Astuti, Epu; Mustika, Aai
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 1 (2025): Maret 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i1.240

Abstract

The COVID-19 pandemic, which emerged in China in late 2019, rapidly spread to over 200 countries, including Indonesia. In response, various preventive measures were implemented to mitigate the increasing number of infections. West Sumatra Province ranked 11th out of 34 provinces in terms of confirmed COVID-19 cases. Patients infected with COVID-19 in this region often presented with comorbidities such as hypertension, diabetes mellitus, chronic obstructive pulmonary disease (COPD), cardiovascular disease (CVD), liver disorders, obesity, renal disease, and malignancies conditions known to contribute significantly to COVID-19-related mortality. This study aims to identify the mortality risk associated with comorbidities in COVID-19 patients using clustering analysis. A total of 91 patient records from a hospital in Padang City were analyzed. The data included age, primary and secondary diagnoses, all classified using the International Classification of Diseases (ICD-10). The K-Means Clustering algorithm was employed to categorize comorbidities into high, medium, and low-risk groups. Data processing was conducted using RapidMiner software, and accuracy was evaluated using mathematical calculations. The results indicated that Cluster 1 (high-risk) consisted of 5 comorbid diseases, Cluster 2 (medium-risk) included 9 diseases, and Cluster 3 (low-risk) encompassed 35 comorbid diseases. These findings demonstrate that clustering analysis is effective in classifying mortality risk based on comorbid conditions and can be utilized to support clinical prioritization and resource allocation during pandemic management.

Page 8 of 17 | Total Record : 164

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