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INDONESIA
Jurnal Komputasi
Published by Universitas Lampung
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Computer Science & IT
Lingkup dan fokus jurnal berkaitan dengan tema-tema computer science, information technology, information system, software engineering, data mining, artificial intelligence, networking, multimedia, database, dan operating system
Arjuna Subject : -
Articles 231 Documents
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Panduan Lapangan Jenis Kupu-kupu di Lingkungan Universitas Lampung Berbasis Android Aristoteles Aristoteles; Martinus Martinus; Galih Imam Widangga
Jurnal Komputasi Vol 6, No 1 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v6i1.1573

Abstract

This study aims to design and build a Field-Guide Application of Butterflies’ Species at University of Lampung based on Android. This application is expected to be used as a means of information to determine the classification, family, local name, morphology, butterflies’ food and the benefits of butterflies at University of Lampung. This study uses Waterfall Method and design of Unified Modeling Language (UML), as well as using Black Box Testing to test functional and application. Data in this study consisted of primary data including name of butterfly families, local names, butterfly images (caterpillar, butterfly), descriptions of butterfly species; and secondary data including information about the application, families, local names, butterfly images and descriptions of butterflies (sub-family, genus, species, wingspan, flying speed and food) at University of Lampung. This study uses 5 categories of families and 37 species of butterflies at University of Lampung.The result of the research shows: Equivalence Partitioning Testing result shows that the Application Butterfly of Unila is compatible with all Android OS versions with minimum requirements are 4.0 inch, 4.5 inch, 5.0 inch, 5.5 to 6 inch resolution and based on the classes tested, it indicates that Application Butterfly of Unila works properly.The average of user friendly user ratings obtained is 4.11 included in either category. The average assessment of the interactive variables obtained is 4.08 included in either category. The result of testing data based on user friendly and interactive variable indicates that the application is included in category of Good and tend to Very Good.
RANCANG BANGUN SISTEM INFORMASI ADMINISTRASI PKM UNIVERSITAS LAMPUNG BERBASIS WEB MENGGUNAKAN METODE RATIONAL UNIFIED PROCESS (RUP) Ayu Taqiya Ulfa; Astria Hijriani; Rico Andrian
Jurnal Komputasi Vol 6, No 1 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v6i1.1482

Abstract

Administrative information system of the Program Kreativitas Mahasiswa (PKM) of Lampung University is a web-based information system developed to assist administrative process in the implementation of PKM at university level, to record participants of PKM University of Lampung, to disseminate information about PKM, and to provide reference of PKM document of University of Lampung students. Information system administration PKM University of Lampung was developed using the programming language PHP and MySQL. The system development method used is the Rational Unified Process (RUP) method. The RUP divides one development cycle into four phases. The phases of the RUP are inception, construction, elaboration, and transition. Each phasein the workflow process that starts from business modeling,requirement,analysis and design, implementation,testing, and finally deployment. The process in the inception phase is business modeling and requirement, then at elaboration stage is analysis and design and implementation. The process at the construction phase is testing, then process at thetransition phase is deployment. Software product testing is done by equivalence partitioning testing and alpha test version. Test results reached success rate 91.41%, so it can be concluded that the functions on the system running well and the system can already to use.
Bandwidth Shaping Menggunakan Proxy Squid Dwi Yatmoko Siambudi; wamiliana .; wisnu wardhana
Jurnal Komputasi Vol 6, No 1 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v6i1.1644

Abstract

The development of technology is very fast. Nowadays, technology has influenced human life. For most people, handphone and computer now become a necessity. Computer can give  information as we need with internet, but internet can cause a negative influence as well. In this research, we build an web base application which can block a negative-influence sites using Squid Proxy. Squid is a daemon that used as a proxy server and web cache. It can work as a connection sharing, filtering and caching. The web which domain block is successfully built which can create a bandwidth share and domain block web base application.
RANCANG BANGUN APLIKASI PKM (PROGRAM KREATIVITAS MAHASISWA) DI UNIVERSITAS LAMPUNG MENGGUNAKAN METODE RUP (RATIONAL UNIFIED PROCES) PADA FCM (FIREBASE CLOUD MESSAGING) ANDROID DAN SMS GATEWAY Qonitati Qonitati; Astria Hijriani; Rico Andrian
Jurnal Komputasi Vol 6, No 1 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v6i1.1487

Abstract

PKM (Student Creativity Program) is a program of Directorate of Research to improve the quality of students. PKM at the University of Lampung already exists and the participants continue to increase for each year. Information related to the implementation of PKM at the University of Lampung has also been submitted by the BAK (Bureau of Academic and Student Affairs) University of Lampung through the website, but according to the BAK that students are less active in visiting the website. Applications that can provide reminders related to PKM information can help students to obtain PKM information. PKM application that can provide this reminder is developed using FCM (Firebase Cloud Messaging) and sms gateway. FCM serves to provide android notifications. PKM application is also developed using RUP (Rational Unified Process) with 4 phases of inception, elaboration, construction and Transition. Inception is business modeling and requirement, then in elaboration phase is analysis, design and implementation. The processes performed in the construction phase are testing, analysis, design and implementation, while the process in the transition phase is testing and deployment. Tests conducted in this study using black box testing with a success rate of 88%.Keywords: android; education; fcm, gammu; mysql; php; pkm; sms gateway; university of lampung.
ANALISIS PERBANDINGAN ANTARA HIBRID RSA DENGAN AMELSBR DAN HIBRID TRANSPOSISI KOLOM DENGAN AMELSBR Wamilliana Wamilliana; Ardiansyah Ardiansyah; Arif Al Furqon
Jurnal Komputasi Vol 6, No 1 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v6i1.1646

Abstract

Teknologi membuat cara komunikasi menjadi lebih baik, tidak dibatasi oleh tempat dan waktu. Bentuk komunikasi yang sering digunakan adalah mengirim dan menerima pesan. Hal ini menuntuk sistem keamanan yang kuat. Metode kriptografi merupakan salah satu cara pengamanan pesan dengan mengubah bentuk pesan sehingga sulit dipahami. Selain itu, metode steganografi merupakan cara untuk menyembunyikan pesan ke dalam media penampung. Kriptografi dan steganografi membuat keamanan suatu pesan lebih baik. Dalam penelitian ini dilakukan perbandingan antara kriptografi RSA (Rivest Shamir Adleman) dan kriptografi transposisi kolom yang disisipkan kedalam media penampung menggunakan steganografi AMELSBR  (Adaptive Minimum Error Least Significant Bit Replacement), dengan media penampung berupa gambar dengan ekstensi .JPG sebgai input (cover image), dan menghasilkan output .JPG (stegoimage). Kesimpulan yang didapat dari penelitian ini adalah ciphertext transposisi kolom memiliki waktu lebih cepat saat proses penyisipan dan menghasilkan stegoimage yang lebih kecil dibandingkan ciphertext RSA. Tetapi ciphertext RSA lebih tahan terhadap perlakuan pemotongan gambar dibandingkan ciphertext transposisi kolom. Sebagian media sosial dapat mengirimkan stegoimage secara sempurna apabila tidak terdapat proses kompresi yang dilakukan.
Implementasi Pengamanan Text File Pada Hybrid Sistem Menggunakan Algoritma Vigenere dan Algoritma Adaptive Minimum Error Least Significant Bit Replacement (AMELSBR) Wamiliana Wamiliana; Tryo Romadhoni Pujakusuma; Febi Eka Febriansyah; Dwi Sakethi
Jurnal Komputasi Vol 6, No 2 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v6i2.1663

Abstract

The development of technology and the internet allows everyone to exchange data andinformation. Problems arise when the information is confidential, especially for a company,institution and also individuals who have important documents and data. Therefore, the securityof the data is a must. In this case cryptography plays a role of encrypting secret messages intothe form of unreadable messages and steganography that hides the irregular messages into theimage media, resulting in double security in the delivery of secret messages. In this research wedevelop a hybrid system using Vigenere and AMELSBR with cover media in the form of (.jpg)format as input (cover), file type (.png) as output (stegoimage) and data be inserted as a file withtext format. The conclusion of this research is that the hybrid system can be used to encrypt thesecret message and hide it into the cover media to make it more secure in data transmission.Therefore, the use of AMELSBR method is good used in steganography. Stegoimage canwithstand the process of manipulating the brightness and contrast with the image record musthave the dominant black color value (rgb (0,0,0)) or white (rgb (255,255,255)) and not manycolor variants, in other words the image can restore the file without experiencing excessivereduction of meaning after the manipulation of brightness and contrast is an image with binaryimage quality and grayscale image.
Continuous Double Auction Berbasis Web Feri Krisnanto; Tristiyanto Tristiyanto; Ardiansyah Ardiansyah
Jurnal Komputasi Vol 6, No 2 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v6i2.1699

Abstract

Sale-purchase often expect the occurrence of mutually fair transaction. Perfect Competition Market is an ideal market structure, because many sellers and buyers will be determined the price based on demand and supply. Continuous Double Auction (CDA) is one method that allows the occurrence of many transactions with the result that buyers get the cheapest price and the seller get a highest price. Currently, transactions can be made online by multiple platforms that promise the information, spacious seller and buyer access, and perfect price competition. CDA method can also be applied to the online market system.This research tries to make e-auction system and simulate that  market commodities using CDA method, focusing on the indication of price change (price fluctuation) that happened. The quantity of participants who make a sale or buy will also affect the price fluctuation changes. If there are more sellers than the buyer, the market increase (Bullish) and otherwise the market decrease (Bearish). The simulation which applies profit-selling strategy, will increase the price higher than the random simulation.
Studi dan Implementasi Konversi Aksara Jawa ke Aksara Latin menggunakan Back Propagation Neural Network Bobi Gusmara; Febi Eka Febriansyah
Jurnal Komputasi Vol 6, No 2 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v6i2.1664

Abstract

Aksara adalah salah satu komponen penting dalam suatu budaya, salah satunya budaya Jawa. Aksara Jawa pada dahulu menjadi aksara pokok yang digunakan sehari-hari oleh sebagian besar masyarakat di Jawa Tengah. Seiring dengan perkembangan peradaban manusia serta meluasnya kehidupan global, aksara Jawa mulai ditinggalkan, bahkan oleh masyarakat Jawa sendiri. Penelitian ini membahas tentang konversi citra aksara Jawa yang berupa citra menjadi aksara Latin. Penelitian ini menggunakan metode klasifikasi Back Propagation Neural Network dan metode ekstraksi fitur GLCM (Grey Level Co-occurence Matrix). Data yang digunakan dalam penelitian ini yaitu 200 kosakata aksara Jawa yang terdiri dari 2-3 suku kata dan setiap kosakata memiliki 5 varian penulisa berbeda. Ada dua tahap utama dalam penelitian ini yaitu pelatihan data dan pengujian data. Tahap pelatihan mencakup proses cropping, resizing, feature extraction dan neural network training. Tahap pengujian mencakup proses klasifikasi data dan uji validitas. Penelitian ini menggunakan software Matlab dan neural network tool. Hasil penelitian ini yaitu bahwa tingkat akurasi neural network tertinggi mencapai 98% , dengan rata-rata akurasi yaitu 92,8% dan koefisien korelasi yaitu 0,9852.
Multi Cooperative Information System Using Laravel Framework Iman, Fadhli Munadi; Tristiyanto, Tristiyanto; Prabowo, Rizky
Jurnal Komputasi Vol 6, No 2 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v6i2.1687

Abstract

The number of cooperatives in Indonesia became the largest in the world. However, the cooperative only contributes 4% of the Gross Domestic Product. It means most of the cooperative is managed unprofessionally. Many of the cooperatives are closed by the government as there are no annual members meeting and transparency of cooperatives business process. This shows that communication and data transparency in cooperatives is very important. But, the cooperatives are difficult to show data transparancy and communicate with members because there is no media or something to support the communication for develop the cooperative.This research has succeeded in developing Multi Cooperative Information System using Laravel framework. Multi Cooperative Information System can store member data collection, financial transactions, calculating profit sharing, and facilitate communication. This system build based on Software as a Service (SaaS) system so cooperative can subscribe with small amount of fee, ignoring the development and maintaining the system.  This system already pass the test by black box testing and expert judgement.
SISTEM INFORMASI KULIAH KERJA NYATA (KKN) BERBASIS ANDROID UNIVERSITAS LAMPUNG Syah, Firman; Lukito, Wisnu; Aristoteles, Aristoteles; Efendi, Nur; Eka Febriansyah, Febi
Jurnal Komputasi Vol 6, No 2 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v6i2.1655

Abstract

Kuliah Kerja Nyata (KKN) is an University of Lampung intracurricular activity, that not only involving college student, but lecturer themselves as an field supervisor. Along with the advances of technology, Badan Pelaksana Kuliah Kerja Nyata (BP-KKN) necessarily need developing an android based information system, in order to giving practiculary easy and more efficient access towards the information. The purpose of this research is developing an KKN information system based on android for college student, field supervisor coordinator lecturer and field supervisor lecturer. The system research development is using Incremental method, system development method is based on the software need that divided by three stages that are: requirement analysis, specification and design architecture. Those stages must finished and vitrificated first before continuing to the next stage. The research produce an KKN information system based on android that applied into smartphones. The conclusion that obtained from this research is successfully build and developed information system that hopefully helping the college student and field advisor lecturer performing an activity that based on information system in the field. This case also strengthened by the result of questionnaire that got very good respond from both college student and field supervisor lecturer. Keywords: Android, College Student, Field Supervisor, KKN, Lecturer, Unila

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