Jurnal Rekayasa Sistem & Industri (JRSI)
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Analysis of Attribute Control Chart in Rubber Roller Production Process at PT Nesinak Industries
Full text linkPT Nesinak Industries is a manufacturing company that produces rubber parts products. One of its productsis a rubber roller for printers. During the production process, several types of defects were found. In theperiod 2018 – 2020, there is a 1.7% defect in total production. Of course, there is a gap between the actualconditions and the company‘s expectations to reduce the level of defects to zero. For this reason, it isnecessary to carry out quality control to reduce the level of defects. In this study, attribute control chartsare used as a quality control tool based on the number of defects that occur in rubber roller products. Inaddition, to find out the dominant defects and the focus of improvement, the pareto diagram can be used.Furthermore, with a fishbone diagram can be known the causes of defects. The dominant type of defect isfound in the type of hole defect. Based on the results of the attribute control chart, in the rubber rollerproduction process, several are not under control and need to be repaired. Furthermore, the factors thatcause the product to have defects are human, machine, method, and material
Inventory Policy Design of FMCG Products to Minimize Total Inventory Cost Using Continuous Review (r, Q) at PT ABC
Full text linkT ABC is a start-up company that provides an online shopping platform with a variety of daily necessities,one of products offered is Fast Moving Consumer Goods (FMCG). The main problem faced by PT ABCwas the total inventory cost that exceeded the budget by 82%. This was caused by the lack of standardinventory policy calculation. To overcome this problem, a proposed inventory policy needs to be designedto obtain the optimal value of reorder point, order quantity, and safety stock. Before designing the inventorypolicy, inventory classification was conducted using ABC analysis. Then proceed with designing inventorypolicy using the continuous review method (r, Q) to minimize total inventory cost. After that, a DecisionSupport System (DSS) was designed based on the results of the proposed inventory policy using MicrosoftExcel-VBA. This research resulted the optimal value of reorder point, order quantity, and safety stock wereobtained for 42 products in category A with diverse values. Based on the proposed inventory policy, the totalinventory cost decreased by 11% or Rp281.770.103/year from the existing total cost. Then, the DSS wassuccessfully designed to assist decision makers in implementing the proposed inventory policy. Although ithad been successfully minimized, the total cost of the proposed inventory still exceeded the budget. Thiswas because the current budget had not considered all components of inventory costs, even the budget forpurchasing costs with an order quantity of as much as the number of demands was not sufficient
Designing Marketing Strategy for Bbq Dirumah using SWOT Analysis and IE Matrix
Full text linkBbq Dirumah is an MSME in the food sector that was established during the Covid-19pandemic in Indonesia so that sales have not had an increasing trend and have not reached thetarget. One of the problem is the marketing strategy that has not been carried out optimally.Therefore, it is necessary to propose a marketing strategy based on the condition of BbqDirumah SMEs in order to increase sales. SWOT analysis was conducted to determine internaland external factors as input in the preparation of the SWOT and IE matrix so that alternativestrategies were obtained and evaluation was carried out to prioritize alternative strategiesimplemented with QSPM as an effort to increase sales to achieve targets. The research objectiveis to design a marketing strategy for Bbq Dirumah to increase sales volume in order to achievethe predetermined target. The results showed that the position of MSME Bbq Dirumah was inquadrant V on the IE matrix with an IFE score of 2.604 and an EFE score of 2.684 so the rightstrategy is market penetration and product development. An alternative strategy based on thepriority value in the QSPM is "benchmarking against competitors for better productdevelopment" with a TAS score of 5.895
Customer Satisfaction Analysis with Importance Performance Analysis on Academic Services at Faculty of Dentistry, University X
Full text linkService is the key to success in various businesses or activities of a services. The success of a service can beseen when the customer receives the service as expected. Based on data at the Faculty of Dentistry UniversityX, student satisfaction score on academic services are still low. The purpose of the study was to determinethe level of student satisfaction and evaluate the attributes of academic services in the Dental ProfessionalEducation program, Faculty of Dentistry, University X. Data was collected using a questionnaire with theService Quality method (SERVQUAL) which consists of 5 dimensions, Reliability, Tangibles, Assurance,Responsiveness, and Empathy. Data processing using SPSS 25, the Customer Satisfaction Index method(CSI) is used to determine the level of student satisfaction with the quality of academic services, ImportancePerformance Analysis method (IPA) is used to determine the attributes of academic services that must bemaintained and improved. The results of this study indicate that the level of student satisfaction withacademic services is 80.23%. The results of the IPA analysis show that there are 2 attributes that must beimproved in quadrant A Assurance dimension, V9 (Ease of reporting work results) and V10 (Ease ofobtaining the information about grades and work progress)
Performance Evaluation of Raw Material Suppliers at Manufacturing Company Using Analytical Hierarchy Process Method
Full text linkPT Trafoindo Prima Perkasa is a medium-sized electrical equipment manufacturing company that usesbushings as raw materials for transformers. Therefore, it is important to evaluate bushing suppliers toensure the appropriate quality and quantity of raw materials. Currently, the company faces issues withdelayed raw material deliveries, which disrupt production. The research aims to evaluate the performanceof bushing raw material suppliers using the Analytical Hierarchy Process (AHP) method, focusing onprice, quality, service, and delivery. The AHP method is employed for multi-criteria decision-making insupplier performance evaluation through questionnaires and analysis using Expert Choice software. Theanalysis results indicate that price is the primary evaluation criterion with a value of 0.398, and Supplier Ademonstrates the best performance with a score of 0.280
Application of Thermo Electric Cooler (TEC) as a Low Cost and Environmentally Friendly Technology in Air Conditioning Systems
Full text linkThe use of environmentally unfriendly chemicals (refrigerants) in Air Conditioners (AC) can damage theozone layer in the earth's atmosphere which has an impact on global warming. Therefore, an environmentallyfriendly cooling system is needed in the application of the Thermo Electric Cooler (TEC) cooling moduletechnology. TEC when supplied with DC voltage (direct current) one side will become hot, while the otherside will be cold, to maximize the cooling process, the hot side of TEC must be lowered as low as possibleby using a fan, heatsink and thermal paste (thermal grease). Using 6 pieces of TEC 12 V 6A, dimensions 40x 40 mm and 4 mm thick. TECs are arranged in parallel and electricity is arranged in series. TEC when thepower supply is connected to an electric current source, operating the 6 TECs attached to the heatsinkarranged in parallel and in series will cause one side to cool down (heat absorbed) and the other side tobecome hot (heat released). What causes the cold side of TEC to cool is the flow of electrons from a higherenergy level to a lower energy level. To find out the temperature of the Peltier cold results using a DHT22sensor with an Arduino microcontroller with a programmed temperature that automatically turns off and on.For the breaker or automatic switch using a 5-volt relay. the use of air conditioners per day (6 hours) issubject to tariffs Rp. 3,212 and the use of air conditioners for a month (30 days) every day the use of 6 hoursis subject to tariffs Rp. 96,360, so as to enjoy a safe and comfortable atmosphere by using environmentallyfriendly and low-cost technology
Forecasting Analysis of Crude Palm Oil (CPO) Demand using Single Exponential Smoothing, Moving Average and Holt Winter’s Methods at the Palm Oil Plantation Company
Full text linkPT Steelindo Wahana Perkasa, a part of the KLK GROUP, is a palm oil plantation company located inEast Belitung. They produce olein and stearin through a refinery plant with a capacity of 1000 MT ofCrude Palm Oil (CPO) per day. These products are exported to Asia and Europe, including countries likeMalaysia, Singapore, China, and the Netherlands. Olein is also sold in the Belitung region. Currently, thecompany only produces around 170 MT of CPO per day, so they purchase CPO from other companies.Research is conducted to analyze the future demand for CPO using the Single Exponential Smoothing,Moving Average, and Holt Winter's methods. The research's goal is to determine the most accurate methodbased on the Mean Absolute Percentage Error (MAPE) value. If MAPE is <10%, the method is consideredsuitable for forecasting CPO demand. The research results indicate that the most appropriate method isHolt Winter's, with a MAPE of 8.6% and 4.4%. In period 13, company A will purchase 2,780.08 MT ofCPO, and company B will purchase 4,496.10 MT
Design of Decision Support System for New Employee Recruitment at PT Motekar Edukasi Indonesia Using Scrum and SMART Methods
Full text linkRecruitment success that depends on accurate selection is the focus of PT Motekar Edukasi Indonesia, aprofessional training services company, which is experiencing challenges in determining suitablecandidates. The company's Head of HRD experiences difficulties in recommending the right employees, aswell as in making decisions to determine employees who meet the required criteria, so a system is neededfor the Head of HRD to determine the best applicants for PT Motekar Edukasi Indonesia according to thecriteria or specifications that have been determined. To overcome this, an HRD decision support systemwas developed using the Scrum method and the Simple Multi Attribute Rating Technique (SMART)method to determine the best applicants based on established criteria. This system was tested and showedhigh accuracy and user satisfaction of 93.80%, providing an effective solution for PT Motekar EdukasiIndonesia's HRD team in the recruitment process. Implementation of a decision support system in acompany improves information structure, data processing and management, effectiveness of selection,recruitment decisions, and provides secure and flexible data storage
A Decade of Research on Blood and Supply Chain Management: A Bibliometrics Analysis
Full text linkEffective Blood Supply Chain Management has significant impacts on health and cost savings. This study aims to identify relevant research on the blood supply chain and recent trends in the Google Scholar database over the past decade (2012-2022) using bibliometric analysis. Articles were collected using the Publish or Perish software, yielding 339 articles after screening. Mendeley software was used for reference management and continuity, while VOSviewer software was used for article mapping. The journals with the highest number of articles were Computer & Chemical Engineering and Transfusion, each with 16 articles. The most cited article was by Jabbarzadeh et al. (2014), cited 357 times. Four clusters were identified, with the most frequent terms in each cluster being "blood," "model," "demand," and "blood product." The results indicate that technologies such as machine learning, AI, and blockchain, along with the development of integrated information systems, are the main focus for improving the efficiency and effectiveness of blood supply chain management. Managerial implications include enhanced blood stock management, optimized distribution, and reduced risk of shortages or overstock. The implementation of these technologies allows for more informed decision-making, ensures transparency and security in the supply chain, and improves coordination among stakeholders to ensure adequate and timely blood availabilit
Design and Build Android-Based Applications of Software Development Projects Effort and Cost Estimation
Full text linkPrediction of software business and costs needs to be done carefully and clearly measured so that thesuccess of a software development project can be achieved. There are 2 methods that are commonly usedto estimate software development efforts and costs, such Function Points (FP) and Use Case Points. Therewere 4 stages of the research carried out: literature study, needs analysis, design, and implementation(application development to testing). Analysis and application design using the Signavio tools. Meanwhile,the author uses open source rapid application development (RAD), called Kodular. The trial phase iscarried out by verifying manual calculations whose projects have been completed. The result of thisresearch is the creation of an Android-based application that can be used to accelerate business players inthe software development sector in the process of estimating product prices. This research has limitation isnot tested the validity of the soft development project which is still in the planning stage