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INDONESIA
INFORMAL: Informatics Journal
Published by Universitas Jember
ISSN : 2503250X     EISSN : -     DOI : -
Core Subject : Science,
Computer Science & IT
Arjuna Subject : -
Articles 219 Documents
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Analisis K-Means Clustering pada Data Sepeda Motor Rozzi Kesuma Dinata; Safwandi Safwandi; Novia Hasdyna; Nur Azizah
INFORMAL: Informatics Journal Vol 5 No 1 (2020): INFORMAL - Informatics Journal
Publisher : Faculty of Computer Science, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/isj.v5i1.17071

Abstract

K-Means is a data mining algorithm that can be used to grouping or clustering data. This research using k-means for clustering the data of motorcycle based on consumer needs. The dataset used in this research is Honda and Yamaha motorcycle which taken from the dialers in Dewantara District, Aceh. The data tested by grouping 300 data of motorcycle with different attributes into 3 clusters, which are cheap, normal, and expensive. The distribution of the data we separate it using 45 data in 15 times of test. Each test used 3 different data randomly selected on each test. To calculate the distance of each motorcycle data that have been inputted to each centroid, we used the Euclidean Distance formula. Data in this cluster system can be used as a recommendation for users in selecting the motorcycle that they interest the most. The results of the performance on each test finished in 15 times shown that the average value of Precision by 76%, Recall by 76% and the accuracy by 81%.
Analisis Keamanan Website Menggunakan Teknik Footprinting dan Vulnerability Scanning erick irawadi alwi; Herdianti Herdianti; Fitriyani Umar
INFORMAL: Informatics Journal Vol 5 No 2 (2020): INFORMAL - Informatics Journal
Publisher : Faculty of Computer Science, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/isj.v5i2.18941

Abstract

Website security is an effort to protect websites from hacker attacks connected through a network. Website security needs to be a concern in the midst of many cases of website hacking from irresponsible people, including websites at Indonesian tertiary institutions that provide information and services to the public, students, and alumni of tertiary institutions. Higher education institution websites that can be accessed widely online can create vulnerabilities against threats from hacker attacks. To minimize this vulnerability, it is necessary to test the website of the higher education institution to assess and evaluate the security system of the university's website. The research method used in this study is the Ethical Hacking method which focuses on footprinting techniques and vulnerability scanning by only testing passive attacks. The results of this study have found information related to the target website (the website of an educational institution in one of the cities in Indonesia) and several vulnerability alerts after testing vulnerability scanning with high to low risk levels so that researchers recommend improving vulnerability to minimize security holes exploited by hackers .
Rancang Bangun Media Moblie Learning Mata KuliahTeknologi Multimedia Dan Internet Lativa Mursyida; Resmi Darni; Ika Parma Dewi
INFORMAL: Informatics Journal Vol 6 No 1 (2021): Informatics Journal (INFORMAL)
Publisher : Faculty of Computer Science, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/isj.v6i1.21041

Abstract

Projections of modern technology as one of the implementations of the industrial revolution 4.0. in the world of education, it can be used as a supporter of the concept of learning, thinking, and developing creative and innovative innovations from students, to make the Pencerah become the Golden Indonesia Generation 2045 who is superior and able to compete at the global level. The current situation in the midst of the Covid-19 outbreak, Industrial Revolution Education 4.0 adapts the new curriculum. The curriculum must be able to open a window to the world through digital information, for example: utilizing a smartphone / android in the midst of the Covid-19 outbreak. Educators with a lot of exploring learning techniques and lots of references will be able to implement learning activities effectively even though they are currently in the midst of Covid-19, but all of this is not free from challenges in its implementation, especially educators. Making mobile learning media applications aims to produce learning media that makes it easier for students to learn multimedia and internet courses wherever they are. The development of this application uses the Prototyping development method with Android-based Java programming with Android Studio application software (version 3.3) with Gradle 4.4. This research produces an Android-based mobile learning media application, the features in this interactive module application are RPS, learning materials, videos, and exercises that are in accordance with the Electronic Engineering curriculum learning material, Faculty of Engineering, UNP.
Rear Cover Oktalia Juwita
INFORMAL: Informatics Journal Vol 5 No 2 (2020): INFORMAL - Informatics Journal
Publisher : Faculty of Computer Science, University of Jember

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Abstract

Rear Cover
Sistem Penunjang Keputusan Pemilihan Paket IndiHome Calon Pelanggan Menggunakan Metode Weighted Product Nadafi'ah Hari Fitri; Agus Sidiq Purnomo
INFORMAL: Informatics Journal Vol 5 No 3 (2020): Informatics Journal (INFORMAL)
Publisher : Faculty of Computer Science, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/isj.v5i3.19463

Abstract

PT Telekomunikasi Indonesia is one of big companies in Indonesia that focuses on technology field. PT Telekomunikasi Indonesia has an important role in providing internet access, of which product is IndiHome. There are several types of internet package to provide the internet access offered by PT Telekomunikasi Indonesia. In this research, the writer aims to help prospective customers make the best decision. Thus, the writer divides the prototype of Decision Support System for Choosing IndiHome Package for Prospective Customers Using WP Method in 4 (four) variables, namely speed, price, internet quota, and need. Based on the results of the test conducted with 48 data using both manual and system calculation, there are 42 compatible data with a percentage of 87,5%.
Analisis Matthew Correlation Coefficient pada K-Nearest Neighbor dalam Klasifikasi Ikan Hias Novia Hasdyna; Rozzi Kesuma Dinata
INFORMAL: Informatics Journal Vol 5 No 2 (2020): INFORMAL - Informatics Journal
Publisher : Faculty of Computer Science, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/isj.v5i2.18907

Abstract

K-Nearest Neighbor (K-NN) is a machine learning algorithm that functions to classify data. This study aims to measure the performance of K-NN algorithm by using Matthew Correlation Coefficient (MCC). The data that used in this study are the ornamental fish which consisting of 3 classes named Premium, Medium, and Low. The analysis results of the Matthew Correlation Coefficient on K-NN using Euclidean Distance obtained the highest MCC value in Medium class which is 0.786542. The second highest MCC value is in Premium class which is 0.567434. The lowest MCC value is in Low class which is 0.435269. Overall, the MCC values is statistically which is 0,596415.
Aplikasi Pengenalan Organ Tubuh Manusia Berbasis Android Menggunakan App Inventor Di Jurusan Biologi Universitas Papua Hendra Muttu; Kristia Ky Yuliawan; Parmahadi Rantelinggi
INFORMAL: Informatics Journal Vol 6 No 1 (2021): Informatics Journal (INFORMAL)
Publisher : Faculty of Computer Science, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/isj.v6i1.23108

Abstract

Learning is a communication process between lecturers and students. Communication will not run without the help of means of conveying messages or media that support learning productivity. In modern times like today, more and more people, especially students, have Android smartphones as the main equipment for daily communication. In the biology department at the University of Papua at this time, learning still uses the lecture dictates as a teaching aid. If the lecture dictates are lost or wet due to waterlogging, the student must spend funds to buy a new lecture dictates. To overcome this problem, new alternatives are needed in learning aids. For this reason, android-based applications for the introduction of human organs can make it easier for lecturers to deliver the learning process material for the introduction of human organs so that learning outcomes for students become easy and interesting. This research was conducted by creating an application using the app inventor service. This application contains material about the description of the introduction of human organs. For testing the application testing uses the black box method and survey methods for application users so that the level of user satisfaction with the application can be seen.
Rancang Bangun Sistem Informasi Pengelolaan Berkas Pada Kantor Notaris/PPAT I Gusti Rai Daniel Ari Putra, SH., M.KN Welda Welda; Desak Made Dwi Utami Putra; Ayu Manik Dirgayusari
INFORMAL: Informatics Journal Vol 5 No 3 (2020): Informatics Journal (INFORMAL)
Publisher : Faculty of Computer Science, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/isj.v5i3.20726

Abstract

Notary Office / PPAT I Gusti Rai Daniel Ari Putra, SH., M.Kn. is a Land Deed Making Official who makes deeds related to land. In carrying out this work, records are still carried out manually, namely still using a recording system in the book which consists of a file monitoring management process, payment for services, and does not provide information regarding the reporting of files that have been completed. This results in each service requiring time from the time the application is submitted to the completion of the file, besides that proof of payment for services can be lost if not recorded. Based on these problems, needed a system to facilitate the management of the file being executed and facilitate business processes that exist in this study created a system with the title Design of Information System File Management in the Office of Notary / PPAT which include data management of the applicant, the data in the file status request , payments and report. This research process uses a linear sequential model method, starting from determining needs, analyzing needs and designing CDM and PDM for the next steps. Furthermore, the authors build and design a system using the PHP programming language and MySQL as a database. The final result of this research is a file management information system at the Notary Office I Gusti Rai Daniel Ari Putra, SH., M.Kn. and testing has been carried out on the system using black box testing whose results are in accordance with the system design.
REAR COVER Oktalia Juwita
INFORMAL: Informatics Journal Vol 5 No 3 (2020): Informatics Journal (INFORMAL)
Publisher : Faculty of Computer Science, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

REAR COVER
Analisis Perbandingan Metode Interior Gateway Protocol RIP Dengan OSPF Pada Jaringan MPLS-VPLS Yanuar Nurdiansyah; Nail Pratama; Muhammad Ifantara Putra; Muhammad Ali Sya’roni
INFORMAL: Informatics Journal Vol 5 No 2 (2020): INFORMAL - Informatics Journal
Publisher : Faculty of Computer Science, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/isj.v5i2.18668

Abstract

Routing is a process for forwarding network packets from one network such as static routing and dynamic routing. This research will evaluate and implement protocols in dynamic routing such as RIP (Routing Information Protocol) and OSPF (Open Short Path First). What will later be simulated with GNS3, from this study will be obtained results For traceroute, OSPF is about 7% faster than RIP time, while for ping, OSPF is 5.9% faster than RIP and for traceroute in the topology the average result of the average traceroute time is 2.58 for RIP and 2.23 for OSPF.

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