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HENGKI TAMANDO SIHOTANG
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Jurnal Mantik
Published by Institute of Computer Science
ISSN : -     EISSN : 26854236     DOI : -
Core Subject : Economy, Science, Education,
Computer Science & IT Economics, Econometrics & Finance Languange, Linguistic, Communication & Media
Jurnal Mantik (Manajemen, Teknologi Informatika dan Komunikasi) is a scientific journal in information systems/informati containing the scientific literature on studies of pure and applied research in information systems/information technology,Comptuer Science and management science and public review of the development of theory, method and applied sciences related to the subject. Jurnal Mantik Penusa is published by Institute of Computer Science (IOCS). Editors invite researchers, practitioners, and students to write scientific developments in fields related to information systems/information technology,Comptuer Science and management science). Jurnal Mantik is issued 4 (FOUR) times a year.
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Articles 2,151 Documents
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Reading Comprehension Learning Model in English Text Using Scanning and Skimming Methods in Physical Education, Health and Recreation Study Program Stok Bina Guna Syahrul Efendi Lubis; Khairul Usman
Jurnal Mantik Vol. 5 No. 3 (2021): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

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Abstract

The author tried to create a learning model reading comprehension in English text by using scanning methods and skimming. The purpose of this study was to determine whether there was an effect of the reading comprehension learning model in English texts using scanning and skimming methods in the STOK Bina Guna PJKR Study Program. The benefits of this research are to determine the effect of the learning model and improve students' ability in reading comprehension, especially with English texts, so that students can apply both methods when trying to get information from English texts quickly. This research is classroom action research. This research was conducted in a cyclical assessment process through two cycles consisting of four stages, namely planning, action, observation, and reflection. Observations was made by observers in this study concluded that student behavior during reading comprehension learning with scanning and skimming techniques in cycle II could be said to be good. However, there are some students who still behave badly during the lesson. From the results of observations, there were 34 students who behaved well during the lesson, while 3 students who did not behaved well. Of the three students, as many as 2 students often turn off the camera during the test. Meanwhile, there are no more students who have bad habits in reading. Based on the results of these observations, student behavior during reading comprehension learning was good and there was an improvement.
Application Learning of Configuration Electron Chemical Elements Saut Dohot Siregar
Jurnal Mantik Vol. 5 No. 3 (2021): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

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Abstract

Chemistry is a compulsory subject in high school, especially in the natural sciences department. In chemistry lessons, there are several sub-topics, one of which is the periodic system of electron configurations. Electron configuration relates to several other sub-topics. So that the electron configuration has an important role in the study of chemistry. The location of an element in the periodic table can be determined by determining the electron configuration of the element. So that the application of technology in helping students to understand electron configuration is needed. Intelligent computer assisted instruction is the application of artificial intelligence in the field of education that can be used to create more effective learning and can increase the willingness to learn and increase student motivation to learn. So it is necessary to make an application for learning the electron configuration of chemical elements. The resulting application has several learning support features, namely material, evaluation, discussion, and glossary. This application is built using the Fisher Yates Shuffle algorithm for randomization of numbers which is applied to practice questions. The application can run well on android devices version 4.4 or the latest version. Applications can measure students' mastery of learning materials more accurately. From the test results obtained 86% of respondents gave a positive response to the application that was built. Likewise, 60% of respondents expect further development. Either on the same material or on other chemistry materials to make learning more interesting and fun.
Feasibility Strategy on Giving Capital for Salt Farmers in Increasing Economic Productivity Using KNN Classification Model Yusniar Yusniar; Umaruddin Usman; Mutammimul Ula; Fakrurrazi Fakrurrazi; Salamah Salamah; Muarif Qumar
Jurnal Mantik Vol. 5 No. 3 (2021): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

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Abstract

The strategy of increasing the salt business in the development of the marine (coastal) economy is very significant in boosting the productivity of the salt. The business of salt that located on Coastal has very good prospects in the future because it is supported by a lot of potential for vacant land, climate, human resources, market opportunities and abundant raw materials for the manufacture of people's salt. Socio-economic potential is the basic capital in the development of salt production in North Aceh Regency, especially Aceh Province. The current issue for most salt farmers is that the quality of salt is still low which is caused by the existing access to capital by farmers, other problems, lack of capital is one of the causes of the decline in salt productivity so that the salt produced is not in accordance with market demand.Salt farmers experienced the impact of a decrease in the productivity of business capital, which became an obstacle for the investor of capital. This can be resolved by the financier. Then the bank can provide funds to salt farmers according to their needs. Therefore, the importance of research in implementing a banking strategy in increasing the productivity of salt farmers in accordance with the business of the farmer group. It is very important to analyze the productivity of salt farmers after being given capital to assess the success of the capital provided to salt farmers. This research method begins with a survey of strategic information in providing business capital for salt farmers which is useful in increasing the productivity of salt farmers. The results of the analysis are entered into the K-Nearest Neighbor classification model in the feasibility of providing capital using a classification in order to see groups of productive salt farmers after being given capital. The results of the test with the k-means clustering model are in the form of group 2 classification values with a distance value of 0.210 based on the criteria included in the strategy for providing business capital.
Steganography Text Message Using LSB and DCT Methods Bayu Angga Wijaya; Adrian Julio Manalu; Bayu Andreas Tarigan; Lovely Septian Silitonga
Jurnal Mantik Vol. 5 No. 3 (2021): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

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Abstract

Advances in human thinking patterns make people realize that information technology is an important part of civilization. In line with the development of information technology, many parties are not responsible for committing crimes such as theft and falsification of information from data. These problems can be overcome using a variety of methods and techniques, one of which is steganography. Steganography is a technique of hiding confidential data in a digital (media) container so that the existence of the secret data is difficult to know by irresponsible people or parties. The purpose of this study is to provide a solution to the problem of hiding messages into images using two different steganographic methods, namely LSB and DCT, then both methods will be tested for their efficiency. In this study, it was concluded that the PSNR value for LSB steganography was 8.887, and the MSE value was 104.85. On the other hand, DCT Steganography got a PSNR of 83,728, and an MSE value of 0.0592. From the PSNR and MSE test results, it can be concluded that the better image quality comes from DCT Steganography, this is because, in processing DCT images, the author must convert the images first, then can encode, but this conversion is not done on the LSB method.
The Influence of Financial Attitude and Financial Knowledge on Saving Interest (Case Study on Students of Brigjend Katamso I Vocational High School Medan) Etty Harya Ningsi; Lambok Manurung
Jurnal Mantik Vol. 5 No. 3 (2021): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

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Abstract

The research analysis aims to determine whether financial Attitude and Financial Knowledge partially and simultaneously affect the Interest in Saving (Case Study on Students of SMK Brigjend Katamso I Medan). The data analysis technique that are being used is the associative method with the help of the SPSS version 16.0 program. This study used multiple linear regression analysis. The sample in this study were 62 respondents. The primary data collection was using a questionnaire. The results showed that financial attitude had a positive and significant effect on interest in saving at SMK Brigjend Katamso I Medan. Financial Knowledge has a positive and significant effect on the interest in saving at SMK Brigjend Katamso I Medan. Financial Attitude and Financial Knowledge have a positive and significant effect on the interest in saving at Brigjend Katamso I Vocational High School Medan.
Measuring Millennials Loyalty Through Affective and Cognitive Online Experience: Mediating Role of Customer Satisfaction Aisah Anugerah Qadri; Yulia Hendri Yeni
Jurnal Mantik Vol. 5 No. 3 (2021): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

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Abstract

This paper aims to find out the direct effects of affective and cognitive OE on customer loyalty, and indirect effect through mediating role of customer satisfaction. By using the technique of purposive sampling to online questionnaires, and as many as 126 millennial groups were involved as respondents. We found that the direct effects of cognitive and affective OE significant and positively affects customer satisfaction and loyalty, while mediating roles of customer satisfaction, only to the relationship between affective OE and customer loyalty as expectation, while to the cognitive OE and customer loyalty unexpected
Analysis of Sales Vitamins Drugs Covid-19 Pandemic with the Random Forest Method Yennimar Yennimar; Miko Pasaribu; Laila Hendrina; Ayu Widila; Dono Sitinjak
Jurnal Mantik Vol. 5 No. 3 (2021): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

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Abstract

During the covid-19 pandemic that occurred in Indonesia until the new normal period, consumer demand for a vitamin drug was fast and unpredictable, thus making pharmacies must be able to plan the optimal supply of vitamin drugs based on the graph of public demand during the pandemic and new normal. This means that the pharmacy does not experience a shortage of stock or excess stock. Therefore, all systems that can predict sales of vitamin drugs are needed during the new normal pandemic. To be able to make predictions, an appropriate method is needed to get accurate results. One of them is the Random Forest method. With Random Forest, the data is predicted based on attribute data so as to produce a conclusion about the value of the desired attribute. Based on this study, 200 sales data of vitamin drugs were taken during the pandemic and new normal with categories of vitamin B complex drugs, vitamins C, D, E, K and Multivitamins and the attributes used were vitamin brand, category, sales conditions, price and sales category. and doesn't work. The test results from this study, it was found that the prediction of vitamin drug sales during the new normal pandemic using the Random Forest method obtained 100% accuracy for testing data with a composition of 80:20, 70:30 and 60:40, so that vitamin drugs would still be sold in new normal.
The Influence of Brand Image, Price and Product Quality on Purchase Decision Michael Michael; Rahmat Alamsyah Harahap; Albert Albert; Albert Hartanto
Jurnal Mantik Vol. 5 No. 3 (2021): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

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Abstract

PT. Cahaya Bintang Medan is a distributor of Richiwa brand furniture. The problems of the purchasing decisions were that the products price were more expensive than similar products from well-known brands, lack of marketing knowledge about the product advantages offered, and the consumers doubted the product quality. The research method used was the quantitative descriptive, the nature of research was the explanatory research. The research population is 192 respondents, by using the Slovin formula, the research sample obtained of 130 respondents, while 30 respondents for testing the validity and reliability with simple random sampling. The analysis method was multiple linear regression with classical assumption testing. The conclusion obtained from this research showed that the effect of brand image, price and product quality simultaneously has a positive effect on purchasing decisions. Partially the brand image of tcount 0.587<ttable 1,65694 and Sig. 0.558>0.05, the price of tcount 1.185<ttable 1.65694 and Sig. 0.238>0.05, the product quality of tcount 2.591>ttable 1.65694 and Sig. 0.011<0.05. The results of determination coefficient test Adjusted R Square of 45%, it means that the purchasing decisions can be explained by the brand image, price and product quality, while the remaining 55% are other factors not examined by researchers.
Leverage Influence,Company Size and Corporate Governance on Company Performance in the Mining Sector 2016-2019 Deny Martin; Syahputra Syahputra; Rico Tanoto; Erwin Gantedy; Chori Aditya Pallas
Jurnal Mantik Vol. 5 No. 3 (2021): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

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Abstract

This research was conducted to determine and examine the effect of leverage ratios, company size and corporate governance on the performance of mining sector companies for the 2016-2019 period. This research is a deductive, quantitative and descriptive research that uses secondary data from financial reports obtained from the financial statements of the mining sector. For data processing using multiple linear regression analysis techniques. The results of the research findings individually that the leverage ratio has negative implications for company performance, corporate governance has positive implications for financial performance and company size has no impact on financial performance. Simultaneous research results show that the leverage ratio, company size and corporate governance have implications for financial performance of 20.2%.
THE EFFECT OF SPIRIT AT WORK, ORGANIZATIONAL CULTURE, AND WORK ENVIRONMENT ON EMPLOYEE PERFORMANCE AT THE PERCUT SEI TUAN CAMAT OFFICE Slamet Widodo
Jurnal Mantik Vol. 5 No. 3 (2021): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

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Abstract

This study aims to examine the effect of spirit at work, organizational culture, and work environment on the performance of civil servants at the Percut Sei Tuan Sub-district Office. The population in this study amounted to 30 employees with the entire population taken as research samples. Data collection was done by using the questionnaire method. The research data were analyzed quantitatively using multiple linear regression method with the help of SPSS 24.0 application. The results of the quantitative analysis show that the spirit at work, organizational culture, and work environment have a positive and significant effect on the performance of the Percut Sei Tuan Sub-District Office employees, either partially or simultaneously. Where partially the t-test shows that work enthusiasm has a tcount of 4.263 with a significance of 0.000, organizational culture has a t-count of 2.990 with a significance of 0.006, and the work environment has a t-count of 2.384 with a significance of 0.025 so that the most dominant variable affecting employee performance is the variable enthusiasm for work with the greatest count. Meanwhile, simultaneously with the F test shows that the resulting Fcount is 96.395 with a significant value of 0.000. The results of the determination test show that 90.8% of employee performance can be explained and obtained from the spirit, organizational culture, and work environment, while the rest is obtained from other factors. In which employee performance has a very strong relationship to the spirit, organizational culture, and work environment.

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