Metris: Jurnal Sains dan Teknologi
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S-Metaheuristics Approach to Solve Traveling Salesman Problem
Get PDFMetaheuristic algorithm is a state of the art optimization method which suitable for solving large and complex problem. Single solution technique – Smetaheuristic is one of metaheuristic algorithm that search near optimal solution and known as exploitation based. The research conducted to seek a better solution for deliverying goods to 29 destinations by comparing two well known optimization methods that can produce the shortest distance: Simulated Annealing (SA) and Tabu Search (TS). The result shows that TS – 107 KM has a shorter distance than SA – 119 KM. Exploration based method should be conducted for next research to produce information in which one is a better metho
Analisis Kenyamanan Termal Ruang Kuliah
Get PDFBhakti Persada Building is one of the main buildings at Ma Chung University that serves as a place for the lecture process and student activities. Every room of Bhakti Persada Building has an AC that is on every day and there are very adequate windows and vents. The study aims to provide thermal comfort to the space users by measure temperature, humidity, and wind speed before and after the engineering of space facilities using SNI 6390: 2011 for temperature and humidity as well as the MENKES No.261 / MENKES / SK / 11/1998 standard for wind speed. In addition, this study was also conducted by paying attention to environmental issues, especially energy utilization, so that later it will be obtained scheduling to use of air conditioners as well as the efficiency of the use of electrical energy after the engineering of space facilities. The results of thermal comfort analysis after engineering the room facilities, obtained the time zone of the lecture room using a propeller fan is the time zone I and II for all sizes of lecture rooms while for time zone III all lecture rooms will use air conditioning because the temperature increases ± 0, 5 ° C, and for time zone IV lecture rooms with sizes 5 x 9 m, 6 x 9 m and 8 x 9 m the second floor will use a fan and a room size 8 x 9 m and 10 x 9 m third floor will use AC. After the engineering of space facilities, it was also found that the efficiency of the use of electrical energy in the lecture hall of the Bhakti Persada Building was 53%
Feasibility Study Using Added Value Calculation Analysis for Palm Oil Supply Chain
Get PDFThe Palm Oil Supply Chain (POSC) is a series of companies dealing with materials or products derived from oil palm fresh fruit bunches. The chain is interdependent sequentially and cooperate in the control, management and improvement of the flow of products, money and information from the upstream side to the downstream side. The POSC consists of palm oil seed growers, farmers, traders, CPO factory, refinery factory, distributor/retailers, and consumers. The first party in the chain is the palm oil seed or seedling growers. These growers have a very important role for palm oil farmers because the quality of the seeds determines the quality of further fruits. The aims of this study are to evaluate the feasibility study of growing the seedlings, and measure the sensitivity of the factors to the profitability. By using modified Hayami method for the supply chain, the added value obtained is Rp5.950.227.861 which is 34,73% of the sales. The feasibility analysis calculation with an interest rate of 13.5%, shows the NPV of Rp 38.439.321.865, with the BEP of Rp 828.430.058, while ROI result 78,62%, Payback Periode value 1,27, Modified B/C Ratio 1,69, and IRR 78,33%
Analisis Kinerja, Seleksi dan Pengembangan Vendor Trucking di Perusahaan Logistik
Get PDFFreight forwarding is a logistics company which provide land delivery services rely heavily on trucking vendors. The available trucking vendors may not fulfill the company's expectations. Therefore the research was conducted to analyze the performance, selection process, management and development of 26 trucking vendors. The research began with the formation of a Critical Success Factor (CSF) and its development, namely a Key Performance Indicator (KPI) in accordance with company objectives. Then the CSF and KPI was weighted through the Analytic Hierarchy Process (AHP) method, determined the optimal performance value of each KPI, measured the performance of each vendor through the scoring method, analyzed the performance of the trucking vendor that was not optimal through Root Cause Analysis (RCA) by looking for the cause based on fishbone diagrams and FMEA tables, as well as providing suggestions regarding the management and development of trucking vendors. The results of the study were 11 CSFs and 28 KPIs that were formed. Based on the selection process conducted on 26 trucking vendors, there are 3 excellent vendors, 4 very good vendors, 11 good vendors, 3 matching vendors, and 5 unsatisfactory vendors. Furthermore, researcher conducted root cause analysis (RCA) of vendor representatives “matching” and “unsatisfactory” categories with fishbone diagrams and FMEA tables. Where the 5 highest RPN values from the FMEA table were given suggestions for improvement. Meanwhile, the excellent, very good, and good vendor categories are developed through strategic plans for the future
Penerapan Metode IPA dan PGCV untuk Menganalisis Kualitas Layanan PT. Bank X berdasarkan Dimensi Servqual
Get PDFThe bank is an institution that usually keeps people's money and redistributes it, as well as providing other services. The quality of service at the bank is important in order to compete well in the banking industry. This study aims to determine customer satisfaction, priority improvements needed to increase customer satisfaction. The data processing of this research begins with the validity and reliability test of the questionnaire, then continues with data processing using the SERVQUAL, IPA, and PGCV methods. In the SERVQUAL method there are a total of 22 attributes, for the tangible dimension it has 9 attributes, then the reliability dimension has 2 attributes, Furthermore, the responsiveness dimension has 4 attributes, the assurance dimension has 3 attributes, and finally the empathy dimension has 4 attributes. The result of Service Quality data processing, as a whole has a gap minus value. The results are then processed by the IPA method and the results show that six attributes are in the first quadrant (priority recovery), three attributes are in the second quadrant, one attribute is in the third quadrant, twelve attributes are in the fourth quadrant. The results of data processing using the IPA method, then continued with data processing using the PGCV method, and the results show that there are six attributes listed in the order of priority, with the highest PGCV score statement, namely the item "tellers and customers". Service has a sufficient number. Then followed by adding some divider walls, equity in bank services, in customer services speed, improvement at queue information, adding some chairs. So, to increase and maintain the bank service quality, the problems must be fixed immediately based on the priority rank results like adding some divider wall, increase the number of teller and customer service, adding some chair, improving equity in bank services, improving the customer service speed in serving customer
Self-Management Team Pemeliharaan Perangkat Layanan Telekomunikasi Seluler
Get PDFThe services of cellular telecommunication companies are very complex and should be available any times. To deliver services used equipment that complexity and properly all the times and the system not damage or function of degradation. Therefore, the equipment maintained the network system that properly to function at any time. To maintain the equipment required the autonomous maintenance team in maintenance activities. Self-management team as a teamwork concept approach that explored maintenance activities of equipment telecommunicatio
Rancang Bangun Alat Sentrigufal Pencuci Daging Buah Kelapa Menggunakan Cairan Air Kelapa (Pre-Processing Metode Sentrifugasi)
Get PDFThe diversification of the coconut processing industry into Virgin Coconut Oil (VCO) as a more prospective coconut derivative is currently still growing rapidly. VCO is a virgin coconut oil product that is beneficial for health, and can be used as a raw material for natural cosmetics which has high economic value. Preliminary research has successfully designed the construction of a coconut husk peeler and a coconut shell breaker machine as an early stage in the VCO production process technology. The discussion of this paper covers the design of a coconut meat washing machine utilizing coconut water which consists of a rotating tube with an adjustable tube rotation speed with an inverter and an electric motor as the driving force equipped with a high pressure nozzle with ± 75 psi pressure. Inside the tube there is a retaining divider that regulates the flow of the washed coconut meat. The washing process uses coconut water to wash coconut meat in a washing tube that rotates at a certain speed as needed with a capacity of 8 kg timer for ± 3-5 minutes. Coconut water is drained and coconut meat is ready for the next process
Portfolio Optimization in Post Financial Crisis of 2008-2009 in the Mongolian Stock Exchange
Get PDFIn this study, we present the Mongolian stock market’s performance post phenomenal financial crisis of 2008-2009, opportunities to invest and the risks problems. For analysis of the study, we used financial portfolio optimization models with restricted structure, mathematical statistic methods and financial methods. First, we considered about portfolio optimization in the Mongolian Stock Exchange using Markowitz’s modern portfolio theory and Telser’s safety first model. We used MSE weekly trading data chosen 50 most traded stocks out of 237 stocks listed at the MSE between 2009 and 2013. We generated 50 weeks mean-variance portfolio and safety first portfolio for 2014 and discussed. We considered weekly investment in the MSE using mean-variance portfolio andsafety first portfolio. The mean-variance portfolio has the best performance of weekly portfolio return with average weekly return and cumulative return. We found stable portfolio against investing risk and did back-test the result. For prospect investors in the MSE, we suggest invest and earn high return in the MSE
Optimasi Green Productivity pada Industri Karet di PT. X Palembang
Get PDFPT. X is a company that processes semi-finished rubber. In its management, the company relies on a number of suppliers of raw rubber. In the production process produces liquid waste. The problem in this research is how to increase company productivity and reduce environmental impact. This study aims to determine the level of company productivity, knowing the EPI index (Environmental Performance Indicator). Methods of conducting research through observation and questionnaires. Based on the results of calculations performed, it shows that the company's productivity is quite good with an average value of 202.56%, while the results of the calculation of the total EPI index are positive because the company has made management efforts in accordance with the applicable provision
Course Design Based on Students’ English Skill Cluster: A Case Study in a University Language Center
Get PDFThe English Proficiency Test (EPrT) is a prediction test for English as a Foreign Language (TOEFL), which is a prerequisite for graduation at XYZ University. The Language Center provides a course for EPrT preparation. The course posttest data shows that only 74% of students met the graduation prerequisites. This study aims to develop an English course design based on the students’ English skill cluster. This study uses the K-Means clustering approach to classify the students based on English skills. The respondents are 397 students who joined the EPrT preparation course in October and November 2018. The 397 students are distributed into 3 clusters, which are 174 students in cluster 1, 116 students in cluster 2, and 107 students in cluster 3. Cluster 1 consists of students with the score below average. Cluster 2 consists of students with the total score above average, but the components score is below average. Cluster 3 consists of students with pre-test total score below average, but the post-test score are above average. Therefore, the EPrT preparation course is suggested to have different levels, instead of one level as now. The course materials are designed to be suitable for students’ initial English skills at each level