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All Journal Jurnal Ilmiah Sains dan Teknologi Journal of Industrial Engineering & Management Research (JIEMAR) Indonesian Journal of Industrial Engineering & Management Universal Journal of Science and Technology
Maryani, Edna
Unknown Affiliation
Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Physics

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FORECASTING ANALYSIS OF URETHANE BLADE NEEDS ON BELT CLEANER TO MINIMIZE FORECAST ERROR (CASE STUDY AT PT. MS ENGINEERING) Hernadewita, Hernadewita; Zuniawan, Akhyar; Maryani, Edna; Karini, Nofitasari Damayanti
Journal of Industrial Engineering & Management Research Vol. 1 No. 2 (2020): Agustus 2020
Publisher : AGUSPATI Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1101.885 KB)

Abstract

MS Engineering is a company engaged in the field engineering, which is producing belt cleaners for cleaning conveyor belts in mining areas, the cement industry and the power plant. In the belt cleaner, has several parts assembled into one, including metal parts and urethane blade parts. PT MS Engineering has low forecasting accuracy, causing excess stock, especially for parts of urethane blade that have expired. The company only sees based on historical data. Therefore, to overcome these problems, it is necessary to forecast demand with the appropriate method. In this study by comparing several forecasting methods to find the highest error rate. The methods to be used include Single Moving Average, Exponential Smoothing and Weighted Moving Averages. From the discussion and analysis of the three calculation methods above, it is known that the calculation results with the 4 monthly Single Moving Average methods are better and more suitable to be applied by PT. MS Engineering in predicting the needs of Urethane Blade in January 2020, because the method has a lower error rate than the method other. The forecast error rate, MAD (Mean Absolute Deviation) of 58,906 and MSE (Mean Square Error) of 4484.57 with forecast results for January 2020 of 292.5 pcs.
Process Capability Improvement Through DMAIC Method for Aluminium Alloy Wheels Casting Maryani, Edna; Purba, Humiras Hardi; Sunadi, Sunadi
Journal of Industrial Engineering & Management Research Vol. 1 No. 4 (2020): December 2020
Publisher : AGUSPATI Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (635.693 KB) | DOI: 10.7777/jiemar.v1i4.98

Abstract

High competition in the global wheel market demands is triggering the companies who are produced to improve their process to be able to offer the best wheels quality. Process monitoring charts are employed for improving the process capability index of the process, some industries set a Cp value greater than 1.33 in assessing their process capability. The aims of this research is to reduce the number of defects in the casting process using the Define Measure Analyze Improve Control (DMAIC) method. It shows the systematic way to find out the major problem root cause at the aluminum castings by using the defect diagnostic approaches and also cause and effect diagram. Other quality tools are used such as the Fishbone diagram and Pareto diagram. These tools identified the major defects for the rejections during production were identified are leaking, porosity hole motive, and oval. In determining the proposed quality improvements using the FMEA tool. The results of data processing on the calculation of process capabilities and product performance show improvements after quality improvements in the casting process.product performance was increased from Cp = 0.81 to Cp = 1.4, sigma level = 2.9 to sigma level = 4.0. The impact for the company is the defect rate was going down and finally it created the production costs saving by IDR 417,550,000 a month. Therefore, the application of the DMAIC method can provide a significant improvement in product quality and giving an impact on production cost savings
ANALYSIS OF PATIENT SATISFACTION WITH IMPORTANCE PERFORMANCE ANALYSIS AND CUSTOMER SATISFACTION INDEX (CASE STUDY: CITRA SUNDARI HOSPITAL) Pratama, Oktioza; Muhammad Azhar Firdaus; Apfiasari, Steela; Maryani, Edna; Kurniati, Ary
UJoST- Universal Journal of Science and Technology Vol. 3 No. 1 (2024): March 2024
Publisher : Faculty of Science and Technology University of Pramita Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11111/ujost.v3i1.162

Abstract

Citra Sundari Hospital as the organizer of health efforts has the responsibility to provide health services to the entire community. Therefore, improving the quality of service is needed in an effort to attract patients to seek treatment at Citra Sundari Hospital. This research was conducted to determine the level of consumer satisfaction with hospital services and to find out what attributes are the main priority in improving service quality to improve service quality at Citra Sundari Hospital, by distributing closed questionnaires and calculating using the Importance Performance Analysis (IPA) method. and the Customer Satisfaction Index (CSI) method. From the calculation results of the Importance and Performance Analysis (IPA) method, the suitability level value is 100.43% and in the Cartesian diagram of 30 attributes there are 14 attributes that express service satisfaction at Citra Sundari Hospital, namely attribute numbers 1,3,4,6,7 , 10, 11, 12, 13, 18, 19 and 20. The results of the calculation of the Customer Satisfaction Index (CSI) method for Citra Sundari Hospital obtained a score of 92.17%, showing that Citra Sundari Hospital customers felt "Very Satisfied", so it could be said that the performance of Citra Sundari Hospital is very good and meets patient satisfaction with hospital services.
Prototype Pintu Air Irigasi Otomatis Berbasis Internet Of Things Darmawan, Erwan; Fernando, Iqbal; Maryani, Edna; Rizqandi Qurrota A'yun, Ghina
Jurnal Ilmiah Sains dan Teknologi Vol 9 No 1 (2025): Jurnal Ilmiah Sains dan Teknologi
Publisher : Teknik Informatika Fakultas Ilmu Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47080/saintek.v9i1.3892

Abstract

Abstract A sluice gate is a supporting structure in a dam, reservoir, river, gutter or ditch which functions to regulate the control of water discharge in each flow. With good and controlled irrigation, irrigation systems and waterways from upstream to downstream can be controlled, so that the need for water in agriculture, fisheries, plantations, and industry can be met and relied on properly. The sluice gate functions to control water so that it can prevent flood water in a fast and high flow. The flowing water will lead to the river to the ocean. Therefore the author will design a prototype of an Internet of Things (IoT) based automatic sluice monitoring system. this system requires interrelated components, namely NodeMcu as the control center of the system as well as a wifi module and the relay module as an electrical switch to turn on or off and use the blynk application.
A Systematic Literature Review of Six Sigma Approach in Manufacturing and Services Industries in Indonesia Maryani, Edna; Jaqin, Choesnul; Tampubolon, Salmon
IJIEM - Indonesian Journal of Industrial Engineering and Management Vol 5, No 3: October 2024
Publisher : Program Pascasarjana Magister Teknik Industri Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijiem.v5i3.25250

Abstract

The present work is a review of literature, to identify the improvements acquired from the application of the Six Sigma methodology in manufacturing and services industries in Indonesia. This systematic review intends to identify how manufacturing research is contributing to the development of the Industry in Indonesia agenda and for a broader understanding about the links between the manufacturing and services sectors.  This systematic review intends to identify by mapping and  summarizing existing research efforts, identifying research agendas, as well as gaps and opportunities for research development. The papers were selected base on relevant articles to the topic of work, and the bibliographic databases used for the research were the Google Scholar, ScienceDirect, ResearchGate, etc. The study counted on 50 articles to better exemplify these points, being 36 focused on the manufacturing sector and 14 on the services sector. In both sectors the variability of the process, improving process quality, productivity, efficiency, the service provided, increasing customer satisfaction, reducing costs, timeliness. It has been found that Six Sigma is a versatile tool that can be adapted and applied in any segment, allowing potential opportunities for new research and applications. Basic tools for brainstorming such as Pareto analysis and cause-effect analysis are definitely used in both industries: manufacturing and service.
Co-Authors Apfiasari, Steela Ary Kurniati DAMAYANTI KARINI, NOFITASARI Darmawan, Erwan Fernando, Iqbal Hernadewita, Hernadewita Humiras Hardi Purba Jaqin, Choesnul Muhammad Azhar Firdaus Pratama, Oktioza Rizqandi Qurrota A'yun, Ghina Sunadi, Sunadi Tampubolon, Salmon Zuniawan, Akhyar