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Journal Basic Science and Technology
Published by Institute of Computer Science
ISSN : 20898185     EISSN : 28081498     DOI : https://doi.org/10.35335/jbst
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Computer Science & IT Electrical & Electronics Engineering Materials Science & Nanotechnology Mechanical Engineering
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
Arjuna Subject : Umum - Umum
Articles 6 Documents
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Search results for , issue "Vol 10 No 3 (2021): October: Basic Science and Technology" : 6 Documents clear
Least Significant Bit (LSB) Modification Analysis With Alternate Insertion Message Technique On Image Media Harahap, Ismail Sati Alom
Journal Basic Science and Technology Vol 10 No 3 (2021): October: Basic Science and Technology
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/jbst.v10i3.1756

Abstract

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).
Analysis Of Three Layer Concentric Tube Heat Exchange Using Mathematic Modeling Rinaldy Valendry
Journal Basic Science and Technology Vol 10 No 3 (2021): October: Basic Science and Technology
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/jbst.v10i3.1757

Abstract

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.
Decision Making System for Preparation of Village Annual Work Plans and Budgets Using the AHP Method Jenerivani Katarina Br Ginting
Journal Basic Science and Technology Vol 10 No 3 (2021): October: Basic Science and Technology
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/jbst.v10i3.1759

Abstract

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.
Three Concentric Tube Heat Exchange With NTU-Effective Method Liyun Arun Hutagalung
Journal Basic Science and Technology Vol 10 No 3 (2021): October: Basic Science and Technology
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/jbst.v10i3.1761

Abstract

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.
House Selection Decision Support System with Fuzzy Tsukamoto Method Tomi Irnawandi Tafonae
Journal Basic Science and Technology Vol 10 No 3 (2021): October: Basic Science and Technology
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/jbst.v10i3.1764

Abstract

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.
The Influence of Sinetron Shows From the Middle School Window on SMPN 1 Naringgul Student Behavior Mesi Nuraeni; M. Izul Fikri Pratama
Journal Basic Science and Technology Vol 10 No 3 (2021): October: Basic Science and Technology
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/jbst.v10i3.2109

Abstract

This study focuses on the views of SMPN 1 Naringgul students on the soap opera Dari Jendela SMP. The purpose of this study was to determine the perception, behavior, and influence of the soap opera Dari Jendela SMP. The method used in this research is a qualitative research method. Methods of data collection is done through interviews and direct observation. The source of the data taken is primary data which is data obtained directly from students through the interview and observation process. The data analysis techniques used are data reduction, data presentation and conclusion drawing. Participants are students of SMPN 1 Naringgul. The results showed that they liked the soap operas, even the soap operas could change their thinking patterns and tended to follow the behavior of the Dari Jendela SMP.

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