Journal Basic Science and Technology
This journal is devoted to identifying, mapping, understanding, and interpreting new trends and patterns in the development of science & technology especially in developing countries in this world. The journal endeavors to highlight science & technology development from different perspectives. The aim is to promote broader dissemination of the results of scholarly endeavors into a broader subject of knowledge and practices and to establish an effective means of communication among academic and research institutions, policymakers, government agencies, and persons concerned with the complex issue of science & technology development
Articles
83 Documents
<![CDATA[Decision Support System for Determining Homeroom Teachers at Musda Perbaungan Private Vocational Schools Using the Simple Additive Weighting Method ]]>
<![CDATA[Ravyson Purba]]>
<![CDATA[ Journal Basic Science and Technology Vol 10 No 2 (2021): June: Basic Science and Technology ]]>
Publisher : <![CDATA[Institute of Computer Science (IOCS) ]]>
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<![CDATA[This research is based on observations, the MUSDA Perbaungan Private Vocational School is one of the vocational schools that cannot be separated from the struggle of the Regional Government of Serdang Bedagai Regency which is located in Tualang. MUSDA Perbaungan Private Vocational School has majors in Computer Network Engineering, Software Engineering, Light Vehicle Engineering, Motorcycle Engineering, and Mechanical Engineering with a total number of 45 teachers. Making a decision support system for determining homeroom teachers is very much needed by the MUSDA Perbaungan Private Vocational School. This system will make it easier to determine homeroom teachers, and also this system can help evaluate teacher performance systems that are lacking in performance standards in general. Thus, a decision support system using the Simple Additive Weighting (SAW) method is suitable to be developed in this system. This system will make it easier to find and determine teachers who are worthy of being homeroom teachers and will speed up the calculation of assessments and attributes to determine teachers who are worthy of being homeroom teachers. The Simple Additive Weighting method can be used as a method in making applications in decision making. Simple Additive Weighting uses a value ordering system in determining attribute ratings, where the rating of each attribute is summed with the weight of the attribute in question. The Simple Additive Weighting method is often also known as the weighted addition method. The basic concept of the Simple Additive Weighting method is to find the weighted sum of the performance ratings for each alternative on all attributes.]]>
<![CDATA[Thermal Environment Analysis And HVAC ( Heating, Ventilating, Air Conditioning) Installation Basen On CFD (Computational Fluid Dynamics) At PTPN III PKS Rambutan Work Station ]]>
<![CDATA[Khairul Imam]]>
<![CDATA[ Journal Basic Science and Technology Vol 10 No 2 (2021): June: Basic Science and Technology ]]>
Publisher : <![CDATA[Institute of Computer Science (IOCS) ]]>
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<![CDATA[This research was conducted based on observations at the PTPN III work station, the operator who did not feel comfortable with the thermal environment was the operator of the sterilizer station. The sterilizer station has heat radiation from the sterilizer machine, heat radiation of machine support equipment and heat conduction of the station roof. All the heat radiation affects the station air temperature. Based on data collection, the average air temperature at the station is 34.59 oC. The operator's reaction to this heat exposure is to take breaks during working hours and when operating machinery. Overall, the proportion of work of machine operators and track control operators who are at the sterilizer station is small. The method used to analyze the impact of heat exposure is the calculation of the Heat Stress Index (HSI) and the proposed repair of HVAC (Heating, Ventilating, Air Conditioning) installations simulated with CFD (Computational Fluid Dynamics). Based on the analysis of the processed data, the average HSI of operators at the sterilizer stations in 13 work areas is 83.62%, which indicates that all operators are exposed to heat. There is a fairly strong positive correlation between HSI and the operator's physiological response of R2 = 0.303. This indicates that the HSI felt by the operator can increase the physiological response in the form of an increase in the number of metabolic activities. There is a very strong negative correlation between the Heat Stress Index value and the total proportion of work operators of R2 = 0.914. This indicates that the increase in HSI makes the operator work proportion decrease. Improvements made were the installation of Air Conditioning in the form of the installation of the L-90 Turbine Ventilator. Based on the simulation, it is known that this improvement will reduce the perception of heat for the operator and reduce the level of operator discomfort.]]>
<![CDATA[Productivity Analysis And Engineering Of Oil Palm Factory Productivity Process On Boiler Work Effectiveness At PTPN III PKS Sei Mangkei ]]>
<![CDATA[Alfrieldo Josua Sihombing]]>
<![CDATA[ Journal Basic Science and Technology Vol 10 No 2 (2021): June: Basic Science and Technology ]]>
Publisher : <![CDATA[Institute of Computer Science (IOCS) ]]>
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<![CDATA[The boiler works to produce steam by heating the boiler water pipes..Boiler has a very important role in the continuity of performance of a Palm Oil Mill in other words can be said as the heart of the Palm Oil Mill,Boilers that have been used for a period of 20 years will certainly experience a decrease in performance, using the Overall Effectiveness Equipment (OEE) method we can know the value of Boiler Effectiveness, to get the OEE value we can see from the maintenance track record that has been carried out by the company, OEE Boiler Value in 2017 obtained average value is 39.08%, this is caused by the high the value of Reduced Speed ??Losses on the Analysis of Six Big Losses in Boiler Sei Mangkei Palm Oil Mill, which is 79.01%.]]>
<![CDATA[Production Track Balance Design To Minimize Bottleneck ]]>
<![CDATA[Mustika Sari]]>
<![CDATA[ Journal Basic Science and Technology Vol 10 No 2 (2021): June: Basic Science and Technology ]]>
Publisher : <![CDATA[Institute of Computer Science (IOCS) ]]>
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<![CDATA[PT. Socfin Indonesia Kebun Tanah Belih is a company engaged in rubber processing with crumb rubber products. In the production process there is a bottleneck problem. Aims to get an improvement in the balance of the production line so as to increase production output. The right problem solving method is the Ranked Position Weight method, Theory of Constraints, and the Simulated Annealing Algorithm. RPW is used to calculate the actual production line performance. The results obtained indicate that there is an imbalance in the path, then an analysis of the causes of the problem is carried out using the TOC method. The results of the cause of problems at the work station and the reduction of the time of the work elements are obtained, so that the smoothing index value is obtained as a path balance parameter. The smoothing index value is then used as the initial solution in the Simulated Annealing Algorithm. The parameters of the Simulated Annealing Algorithm include cycle time, initial temperature of 1000C, 17 iterations, and steady state termination at N value of 3. The search for new solutions is carried out by iterating by combining work elements based on precedence diagrams and zoning constraints. The iteration stops when N is 3, meaning that the iteration has been rejected three times in a row. The best solution is obtained in iteration 10 with a value of 110.39. By using the Simulated Annealing Algorithm method, the efficiency value is increased by 9.36%, the balance delay value decreases by 9.36% and the smoothing index decreases by 94.18.]]>
<![CDATA[Decision Support System for Determining the Level of Employee Salary Increase in CV. Hera Citra Abadi by Using the Simple Additive Weghtting (SAW) Method ]]>
<![CDATA[Suryatmo Sijabat]]>
<![CDATA[ Journal Basic Science and Technology Vol 10 No 2 (2021): June: Basic Science and Technology ]]>
Publisher : <![CDATA[Institute of Computer Science (IOCS) ]]>
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<![CDATA[In accordance with the regulations determined by the office to obtain a promotion, criteria are needed to determine who will be elected to receive promotion. Job promotion is carried out with the aim of providing feedback on the performance produced by a civil servant for a certain period. To help determine in applying someone who deserves to be promoted his position for Decision Support Systems is to use the Fuzzy Multi Attribute Decision Making (FMADM) model. In this study a case was raised, namely looking for the best alternative based on predetermined criteria using the Simple Additive Weighting (SAW) method to calculate the FMADM model in that case. Fuzzy is used using a fuzzy system rule that is fuzzification, inference and deffuzification. This FMADM model was chosen because it is able to select the best alternative from a number of intended alternatives, namely those who have the right to choose employees to be promoted in accordance with the specified criteria. The research was conducted by looking for weight values for each attribute, then a ranking process was carried out that would determine the optimal alternative, namely the best civil servants.]]>
<![CDATA[Least Significant Bit (LSB) Modification Analysis With Alternate Insertion Message Technique On Image Media ]]>
<![CDATA[Harahap, Ismail Sati Alom]]>
<![CDATA[ Journal Basic Science and Technology Vol 10 No 3 (2021): October: Basic Science and Technology ]]>
Publisher : <![CDATA[Institute of Computer Science (IOCS) ]]>
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DOI: 10.35335/jbst.v10i3.1756
<![CDATA[One aspect of success in data communication is security. Data security can be done by using steganography. Steganography is a way to hide messages in the media in such a way that other people do not realize there is a message in the media. Many of the algorithms used in steganography one of which is the Least Significant Bit. In this research, the authors modify Least Significant Bit algorithms with Alternate Insertion method. Modification is doing of embedding and extracting messages process by changing the RGB values ??at each pixel of image data with confidential file by inserting message alternately and insertionly until the all message inserted. This steganography applications have input password that is used as the key of a message can't be opened in addition to the addressee so that the data will be kept confidential. The parameters used to measure the performance of the Least Significant Bit and Alternate Insertion are using runtime program and analysist algorithms of Big . The message insertion applications built by using C# (C Sharp) programming language. From the results of research that extracting process messages work faster than the embedding process. More larger of image in used it will be spend longer time to process the inserting message. Time complexity of algorithms (Big ) embedding and extracting processes obtained in testing the system is T (n) = (xy). From the results of research that extracting process messages work faster than the embedding process. More larger of image in used it will be spend longer time to process the inserting message. Time complexity of algorithms (Big ) embedding and extracting processes obtained in testing the system is T (n) = (xy). From the results of research that extracting process messages work faster than the embedding process. More larger of image in used it will be spend longer time to process the inserting message. Time complexity of algorithms (Big ) embedding and extracting processes obtained in testing the system is T (n) = (xy).]]>
<![CDATA[Analysis Of Three Layer Concentric Tube Heat Exchange Using Mathematic Modeling ]]>
<![CDATA[Rinaldy Valendry]]>
<![CDATA[ Journal Basic Science and Technology Vol 10 No 3 (2021): October: Basic Science and Technology ]]>
Publisher : <![CDATA[Institute of Computer Science (IOCS) ]]>
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DOI: 10.35335/jbst.v10i3.1757
<![CDATA[A three-channel concentric pipes heat exchanger is a development or improvement of a two-channel concentric heat exchange apparatus. This study was conducted to determine the output temperature of each channel, and compare the results of theoretical calculations using mathematical modeling of experimental results conducted in the field. So that obtained difference of value between result of experiment to result of theory calculation. In this study have 3 variations of temperature data that is 50 °C, 55°C, and 60 °C with two streams namely CounterFlow and PararellFLow and discharge 2.5 l/minute, while cold fluid with 25 °C discharge 1.5 l/minute. From the above analysis it can be concluded that the temperature of the hot fluid coming out of the APK in the experiment tends to be higher than the temperature of the hot fluid coming out of the APK on theoretical calculations of mathematical modeling methods. Meanwhile, the cold cold fluid temperature coming out of the APK in experimental tends to be lower than the temperature of the cold fluid coming out of the APK on theoretical calculations of mathematical modeling methods.]]>
<![CDATA[Decision Making System for Preparation of Village Annual Work Plans and Budgets Using the AHP Method ]]>
<![CDATA[Jenerivani Katarina Br Ginting]]>
<![CDATA[ Journal Basic Science and Technology Vol 10 No 3 (2021): October: Basic Science and Technology ]]>
Publisher : <![CDATA[Institute of Computer Science (IOCS) ]]>
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DOI: 10.35335/jbst.v10i3.1759
<![CDATA[This research is a Decision Making System for the preparation of work plans and annual village budget with the AHP method. The AHP method is used for the preparation of the work plan and annual village budget which is determined based on the criteria of time, funds, jlh / vol in determining the best alternative. This Decision Making System was built with the Visual Studio 2010 application as a tool in the preparation of the annual village work plan and budget and using MYSQL as a database. The outcome of the Decision Making System is the Taking System. Decision on the preparation of the work plan and the annual village budget helps the village apparatus in submitting the work plan and annual village budget.]]>
<![CDATA[Three Concentric Tube Heat Exchange With NTU-Effective Method ]]>
<![CDATA[Liyun Arun Hutagalung]]>
<![CDATA[ Journal Basic Science and Technology Vol 10 No 3 (2021): October: Basic Science and Technology ]]>
Publisher : <![CDATA[Institute of Computer Science (IOCS) ]]>
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DOI: 10.35335/jbst.v10i3.1761
<![CDATA[Heat exchanger is an exchange device with three concentric pipe tubes with direct flow used to reduce hot fluid to cold fluid using cold water fluid. the research was carried out triple pipes that flowed in the same direction with 3 variationsin the temperature pipe of the hot water fluid th with a temperature of 50oC, 55oC and 60oC with temperature of cold water fluid tc 25oC and this study used a flow rate of 0.000025 m3/s = 0.000033 m3/s and 0.000041 m3/s.The results of this study showed that the equilibrium temperature obtained from the experimental results of the effectiveness of the one-way pipeline flow was 1 = 32.99% the effectiveness of thr second channel pipe of 2 = 66.48% and ont the effectiveness of the third channel pipe of 3 = 33.57% 3rd data with a debut of 0.000025 m3/s and the effectiveness of the opposite flow the channel one pipe is 1 = 55.16% on the effectiveness of the second channel pipe of 2 = 66.48% and on the effectiveness of the third channel pipe of 3 = 60.59% it is obtained in the with to 7 with a discharge of 0.000041 m3/s.]]>
<![CDATA[House Selection Decision Support System with Fuzzy Tsukamoto Method ]]>
<![CDATA[Tomi Irnawandi Tafonae]]>
<![CDATA[ Journal Basic Science and Technology Vol 10 No 3 (2021): October: Basic Science and Technology ]]>
Publisher : <![CDATA[Institute of Computer Science (IOCS) ]]>
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DOI: 10.35335/jbst.v10i3.1764
<![CDATA[Housing is a basic human need and needs to be fostered and developed for the sake of continuity and improvement of people's lives and settlements which cannot be seen as they mean of need, but more than that it is a human settlement in creating a space of life to promote themselves in revealing their identity. During this time the decision making of home selection desired by consumers still experienced several obstacles, namely the slow process of decision making, inconvenience to the housing environment, credit installments and so on. This is because there is no objective method for deciding on a fast choice based on housing data which is right in accordance with consumer desires. By referring to the solution given by Fuzzy Tsukamoto in helping to make a decision, a decision maker can make decisions about housing according to the desired quickly by comparing all existing criteria. Decision support systems are generally defined as a system that is capable of producing solutions and handling problems. Decision support systems are not intended to replace the role of decision makers, but to help and support decision makers. This Fuzzy Tsukamoto method can determine the preference value of each alternative, and can select the best alternative from a number of alternatives.]]>
