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IJISTECH (International Journal Of Information System & Technology)

ijistech
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Published by STIKOM Tunas Pematang Siantar

ISSN : 25807250 EISSN : - DOI : -

Core Subject : Science,

Computer Science & IT

IJISTECH (International Journal Of Information System & Technology) is published with both online and print versions. The journal covers the frontier issues in the computer science and their applications in business, industry and other subjects. The computer science is a branch of engineering science that studies computable processes and structures. It contains theories for understanding computing systems and methods; computational algorithms and tools; methodologies for testing of concepts. The subjects covered by the journal include artificial intelligence, bioinformatics, computational statistics, database, data mining, financial engineering, hardware systems, imaging engineering, internet computing, networking, scientific computing, software engineering, and their applications etc.

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Articles 13 Documents

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Search results for , issue "Vol 5, No 3 (2021): October" : 13 Documents clear

Sentiment Analysis of Student Emotion During Online Learning Using Recurrent Neural Networks (RNN) Nisa Hanum Harani; Cahyo Prianto
IJISTECH (International Journal of Information System and Technology) Vol 5, No 3 (2021): October
Publisher : Sekolah Tinggi Ilmu Komputer (STIKOM) Tunas Bangsa

There are many limitations in online learning process where communication effect student productivity, such as interpretation in the delivery of information can be different if it is in text form . The unstable internet network in some parts of Indonesia is also an obstacle in the learning process. Emotional factors are very influential on student motivation in learning, in online learning emotions can be read from textual dialogue in providing responses. We propose trainable model capable of identifying the tendency of emotions / responses felt by students. With using natural language processing we can extract information and insights contained in conversations from WhatsApp, then organize them into their respective categories. The selection of the RNN algorithm can increase the accuracy by 75% in analyzing student emotions in online learning.

Design and Build an ENT Disease Diagnosis Expert System with Bayesian Probability Method Khairina Eka Setyaputri; Hidayatur Rakhmawati
IJISTECH (International Journal of Information System and Technology) Vol 5, No 3 (2021): October
Publisher : Sekolah Tinggi Ilmu Komputer (STIKOM) Tunas Bangsa

Sinusitis is one of the most common causes of health problems in the world and the cases are most often found in daily practice. The incidence of sinusitis is a fairly severe disease, namely 1.3 and 3.5 per 100 cases of adults per year to see a doctor. Patients with a disease need accurate information that is easily accessible to find out the disease they are experiencing based on the symptoms they feel. One of the reliable information sourced from experts or people who are experts in their fields and can be easily accessed is the existence of an expert system. In this case, the expert system needed is an ENT (Ear, Nose and Throat) disease diagnosis expert system. The expert system for diagnosing ENT diseases, designed in this study uses the Bayesian Probability method. The research on the design of an expert system for diagnosing ENT diseases that have been carried out can be used as a decision making for ENT patients using the Bayesian Probability method.

Designing A User Interface and User Experience from Piring Makanku Application by Using Figma Application for Teens ZE. Ferdi Fauzan Putra; Hamidillah Ajie; Ika Anwar Safitri
IJISTECH (International Journal of Information System and Technology) Vol 5, No 3 (2021): October
Publisher : Sekolah Tinggi Ilmu Komputer (STIKOM) Tunas Bangsa

This study is aimed to design a user interface for Piring Makanku application that can be used for a promotion medium to introduce Piring Makanku program issued by the Ministry of Health, for the teens aged 15-18. A Figma webapp was employed as a tool for designing this interface quickly and easily. Whereas A Lean UX method, which is one method in designing UX, was used to design the interface shortly and effectively. A usability test with Retrospective Thinking Aloud was applied to measure whether or not the design can be accepted by the teen users. Findings derived from the stages of the test revealed that the design can be accepted by teens with positive response of 95.56% out of the total 5 respondents. It can be concluded that the interface to have been designed becomes appropriate for development into Piring Makanku application layout.

Application of the C4.5 Algorithm Determination of Depreciation Classification Volume of Fertilizer on Storage Warehouse Y Yendrizal
IJISTECH (International Journal of Information System and Technology) Vol 5, No 3 (2021): October
Publisher : Sekolah Tinggi Ilmu Komputer (STIKOM) Tunas Bangsa

The problems faced by the fertilizer warehouse PT. Iskandar Muda currently shrinking the volume of fertilizer for storage in warehouses, which is often reduced, is not yet known by the management. In reducing the volume of this fertilizer, the author wants to apply the C4.5 Algorithm to help in making decisions. From all the existing data will be classified and predicted, from the classification results will present the rules. So that it can be easily understood in natural language. Based on the application of the C4.5 Algorithm in the classification technique of fertilizer volume shrinkage on storage in the warehouse at the Pupuk Iskandar Muda warehouse, the results of this study show that 1) the C4.5 algorithm with the decision tree method can provide executive information and the system is used to describe processes related to depreciation classification. 2) The C4.5 algorithm is considered as an algorithm that is very helpful in classifying data because the characteristics of the classified data can be obtained clearly, both in the form of a decision tree structure and rules or rule-if-then. 3) Form a decision tree in providing recommendations for decision making.

Utilization of Fuzzy Inference Marketing System for Home Purchase Based on Consumer Interest Using Sugeno Fuzzy Logic Dedi Mahrizon
IJISTECH (International Journal of Information System and Technology) Vol 5, No 3 (2021): October
Publisher : Sekolah Tinggi Ilmu Komputer (STIKOM) Tunas Bangsa

This study aims to determine the purchase of a house based on consumer interest in accordance with consumer criteria. By using the Sugeno method to determine the input and output variables which are a set of companies, then changing the input variables into a fuzzy set with a fuzzification process, then fuzzy processing manages the data with the minimum method. The last step is to convert the output into a set of deficits with a defuzzification process using the centroid method, so that it will get the desired results on the output variable. This study uses variables Size, Type, Design, Position and Material using mathematical constants or functions of input variables, and in the defuzzification process using the centralized mean method. The results of this study are by using the Sugeno method in fuzzy logic to determine house selection based on consumer interests, fuzzy logic can be used to assist in determining the selection of houses in Solok City and by applying the Sugeno method in fuzzy logic to be able to produce house buying decisions based on consumer interests.

Implementation of the Hill Climbing Method determines the shortest path to the Tanah Datar Regency tourist attraction Rika Widya Perdana
IJISTECH (International Journal of Information System and Technology) Vol 5, No 3 (2021): October
Publisher : Sekolah Tinggi Ilmu Komputer (STIKOM) Tunas Bangsa

Searching is a method in the best search to find a solution. The heuristic search method is the most common and most widely used method in the process of finding the shortest path to find a solution. The process of completing searching using the Hill Climbing method, this method uses a heuristic function. The problem in this case is solving the problem of finding the best path to save costs and time in visiting recreational areas in the Batu Sangkar area, Tanah Datar Regency. The advantage of this algorithm is that all possible solutions will be obtained and then checked from the left side one by one, so that a solution with optimal results will be obtained. In its application, the Hill Climbing method uses Geographic Information Systems as a tool in making decisions, by collecting, examining, and analyzing information related to digital maps. with the combination of the Hill Climbing method and geographic information systems can produce an application that can overcome the problem of finding the shortest path.

The Combination of AHP (Analytic Hierarchy Process) and SAW (Simple Additive Weighting) Methods in the Selection of Business Locations Embun Fajar Wati
IJISTECH (International Journal of Information System and Technology) Vol 5, No 3 (2021): October
Publisher : Sekolah Tinggi Ilmu Komputer (STIKOM) Tunas Bangsa

Choosing a strategic business location is the dream of entrepreneurs. Site selection can also consider several criteria, namely the bustling market, rental prices, and building area. These criteria become important guidelines in choosing the number of business locations offered. It takes one or several methods used in the decision support system to assist in determining the location of the business. The method used is a combination of AHP (Analytic Hierarchy Process) and SAW (Simple Additive Weighting) which can rank business locations based on predetermined criteria weights. The first step in these methods is the weighting of the criteria based on their level of importance, then proceed with selecting the best alternative by ranking obtained from the results of calculations with both methods. The AHP (Analytic Hierarchy Process) method is used to calculate the weight of each criterion which will be calculated using the normalization matrix of the SAW (Simple Additive Weighting) method. The result of combining these two methods is the best location with the first ranking, namely Poris with a preference value of 0.96. The next ranking is Gondrong, Sipon, Royal, Dadap, Teluk Naga, and the last ranking is Rawa.

User Acceptance Test For Digital Signature Application In Academic Domain To Support The Covid-19 Work From Home Program Irawan Afrianto; Andri Heryandi; Alif Finandhita; Sufa Atin
IJISTECH (International Journal of Information System and Technology) Vol 5, No 3 (2021): October
Publisher : Sekolah Tinggi Ilmu Komputer (STIKOM) Tunas Bangsa

The user acceptance test (UAT) is the final stage in the production of the application. This is intended to see the degree to which the system can function and satisfy the needs of its users. The objectives of this research is to test the function and user acceptance of the digital signature application in the academic environment to support the covid-19 work from home program. The approach used in the user acceptance test is to use the black box method and the Likert scale questionnaire to figure out the functional scope of the program, as well as the acceptance of system by users while using the application. The results of the test show that the digital signature application that has been designed, functionally can run well and generates a user acceptance value of 82.07%. It can be concluded that the application that was developed has been accepted by users and fulfills the needs of its users, it is an alternative solution, especially in signing academic documents during the current Covid-19 pandemic.

Forensic Whatsapp Investigation Analysis on Bluestack Simulator Device Using Live Forensic Method With ACPO Standard Kurniadin Abd. Latif; Rifqi Hammad; Tomi Tri Sujaka; Khairan Marzuki; Andi Sofyan Anas
IJISTECH (International Journal of Information System and Technology) Vol 5, No 3 (2021): October
Publisher : Sekolah Tinggi Ilmu Komputer (STIKOM) Tunas Bangsa

This study aims to conduct a forensic analysis of the WhatsApp application on the Bluestacks android simulator device. BlueStacks App Player is designed to allow Android apps to run on PCs running Microsoft Windows and Apple's macOS. In this study, the scenario was carried out using two devices as Whatsapp communication media. The first device is a laptop device that uses the Bluestacks android simulator with the SM-G955F device type, and the second is a smartphone device as opposed to communication. This study uses the ACPO standard which consists of several stages such as Plan, Capture, Analysis, Present. Pada tahap Capture, teknik yang digunakan dalam melakukan pencarian bukti pada aplikasi BlueStacks adalah live forensik. Hasil penelitian ini menunjukan bahwa analisis forensik pada perangkat android simulator Bluestacks dapat dilakukan sesuai prosedur ACPO. From the procedure carried out, information related to communication on the WhatsApp application was obtained. The source of this information is obtained from the WhatsApp database file msgstore.db.crypt12 which has been decrypted using the SQLite Browser application with a combination of the WhatsApp Key file contained in the cloned digital evidence. From the results of the decryption that has been carried out, then an explanation is carried out through the WhatsApp viewer application to make it easier to understand from the display side.

Analysis of The Quality of The Eskanusa.Com Website on User Satisfaction with the Webqual 4.0 Method Mochammad Lazzuardi Effendi; Nurajijah Nurajijah; Siti Nurlela
IJISTECH (International Journal of Information System and Technology) Vol 5, No 3 (2021): October
Publisher : Sekolah Tinggi Ilmu Komputer (STIKOM) Tunas Bangsa

Information technology is currently growing rapidly, one of which is the use of the internet. PT. Eskanusa Putraco is one of the companies that use the internet as a medium to sell goods online on their website, namely eskanusa.com. User satisfaction with the use of the website will affect employee performance. This study aims to analyze how satisfied users are in their activities on the escanusa.com website using the webqual 4.0 method with 3 independent variables, namely Usability, Information Quality, Interaction Quality, Service (Service Interaction Quality), and 1 dependent variable, namely Overall (Overall Impression) / User Satisfaction. Data collection techniques used questionnaires that were distributed to 44 respondents. Data management is carried out using descriptive statistics to calculate the overall data obtained, which is then tested for validity and reliability tests to find out the data obtained are valid and reliable, followed by classical assumption tests using 3 tests, namely normality, multicollinearity, and heteroscedasticity to determine if symptoms occur. or not on the data, and multiple linear regression analysis to determine the independent variable has an influence with the dependent variable with the F test and T test. It is known that the variables (usability), information quality (information quality), interaction quality, service (service interaction quality) affect user satisfaction, the results obtained are 40% or not good enough because the variables of information quality and interaction quality, which are known to have not good enough influence on users.

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