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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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Sistem Pakar Diagnosa Penyakit Tanaman Kopi Menggunakan Metode Dempster Shafer Boby Riansyah; Didik Kurniawan; Made Same
Jurnal Komputasi Vol 9, No 1 (2021): Komputasi
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v9i1.2420

Abstract

At present the total area of Indonesian coffee plantations is ranked second in the world, but for the production and export of Indonesian coffee there is at number four in the world. The low productivity of coffee is caused by inadequate crop cultivation techniques, this encouraging various plant growth disorders. Based on the problems, coffee farmers need a tool that can provide information about coffee plants and diseases that attack coffee plants and provide solutions to handle these diseases. One branch of computer science that can help is the expert system (Expert System). Expert systems use the knowledge of an expert which is intended to increase knowledge into computers. This research used Dempster-Shafer method to diagnose and to knowing the degree of accuracy of the diagnoses results. Information system and expert system of coffee plants diagnose contains information about plants management that begins from planting until harvest. This system built based on the web, with this system is expected to help provide solutions to handle the coffee plants that have disease, that many coffee plants can be saved from disease and can increase the productivity of coffee plants.
Penggabungan Dua Koneksi Internet Service Provider Dengan Teknik Load Balancing Menggunakan Metode Equal Cost Multi Path Rico Andrian; Malik Abdul Aziz; Muhammad Iqbal
Jurnal Komputasi Vol 9, No 1 (2021): Komputasi
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v9i1.1905

Abstract

Computer networks turn out to be one of the primary needs in life in this era of the globalization. Computer networks are often used simultaneously at certain times so that it can cause overload of bandwidth on the computer network. Overloaded bandwidth can cause disturbances such as networks that feel slower than usual. This study discusses the merger of two service provider internet connections that is done by load balancing techniques using the equal cost multipath method. The stages that will be carried out are analysis, design, simulation or prototyping, implementation, monitoring, and management. The results of the implementation of the application of load balancing techniques with the equal cost multipath method get an increase in the QoS value which can be seen from the test parameters performed namely the average throughput on all computers has increased 0.17%, the average delay for all computers has a decrease in quality of 0.9 milliseconds, the average jitter of all computers has increased the quality of 0.68 milliseconds, and the average packet loss in all computers experienced a 0.58% quality improvement. The configuration of this study was made easier with the help of the web configuration made.
APLIKASI PERMAINAN SEBAGAI MEDIA PEMBELAJARAN PETA DAN BUDAYA SUMATERA UNTUK SISWA SEKOLAH DASAR Dyah Ayu Megawaty; Damayanti Damayanti; Zakaria Sani Assubhi; Maulana Aziz Assuja
Jurnal Komputasi Vol 9, No 1 (2021): Komputasi
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v9i1.2779

Abstract

Indonesia secara umum mempunyai banyak keanekaragaman budaya dari berbagai pulau. Pulau Sumatera termasuk dalam pulau-pulau terbesar di Indonesia. Seiring dengan perkembangan zaman, kebudayaan yang ada di Indonesia pada saat ini secara perlahan mulai terlupakan. Oleh karena itu tujuan dari penelitian ini adalah memberikan alternatif lain untuk mengenalkan pulau Sumatera pada pelajar sekolah dasar melalui aplikasi permainan sehingga siswa tidak mudah bosan dan tertarik untuk mengetahui sejarah masing-masing provinsi, rumah adat dan pakaian adatnya. Penelitian ini dikembangkan dengan menggunakan construct 2 dan metode pengembangan Multimedia Development Life Cycle. Hasil penelitian ini berupa aplikasi permainan pengenalan peta dan budaya Sumatera yang dapat dijalankan melalui smartphone berbasis android dengan disertakan latihan soal, untuk mengetahui sejauh mana kemampuan siswa mendalami materi yang didapat dari game ini. Aplikasi ini telah diuji kepada siswa sekolah dasar dengan rata-rata hasil 94% atau sangat baik.
Signature Identification Menggunakan Metode Template Matching dan Fuzzy K-Nearest Neighbor Andi Farmadi; Ahmad Faris Asy’arie; 3Irwan Budiman; Dwi Kartini; Ahmad Rusadi Arrahimi; muliadi muliadi
Jurnal Komputasi Vol 9, No 1 (2021): Komputasi
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v9i1.2776

Abstract

Abstract — Signature is the result of the process of writing a person of a particular nature as a symbolic substance, which means a symbol or mark. Signature is usually used as an identifying mark of a person, each person must have his own signature in a different pattern. Because it's used as a person's identifying badge, Signatures now become particularly susceptible to counterfeiting and abuse that require check with a signature pattern recognition. This research has created a signature pattern recognition system using methods Template Matching and Fuzzy K-Nearest Neighbor to help recognize a person's signature pattern. The number of signatures used is 110 in two categories: the original signature with 100 data and the false signature with 10 data, and there were 10 classes taken using smartphone cameras. From this research, it was found that the best value from the image size of 200x200 pixels was 92% of the class that owned the signature legible, Positive Predictive Value (PPV) 88% and False Rejection Rate (FRR) 12%, with a k=3 on the original signature, and 90% of the class that owned the signature legible, Negative Predictive Value (NPV) 90% dan False Acceptance Rate (FAR) 10% with a k=9 on the false signature. From these results, it could be concluded that methods Template Matching and Fuzzy K-Nearest Neighbor could be used for signature pattern recognition.Keywords: Pattern, Signature, Template Matching, Fuzzy K-Nearest Neighbor
PENGEMBANGAN SISTEM ADMINISTRASI PEMBAYARAN SUMBANGAN PEMBINAAN PENDIDIKAN (SPP) SEKOLAH MENENGAH ATAS BERBASIS WEB Ridho Ronaldi Eka Putra; Dwi Sakethi
Jurnal Komputasi Vol 9, No 1 (2021): Komputasi
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v9i1.2410

Abstract

School is a level and continuous education unit for organizing teaching and learning activities. The system of financial administration of students at schools such as SPP (tuition) payments is one example of administration system that most of the data writing still use manual system. Writing data using a manual system sometimes has errors (human error) and data loss, this is because the writing and storage is done as well and less precision when entering data. Developing a Web-based school's financial administration information system using the Laravel Framework resolves these issues. In this study, system development used the PHP programming language and the Laravel Framework. Functional testing System using Black Box testing with Equivalence Partitioning (EP) method. The result of the developed system provides the school's ease of logging the student SPP (tuition) payment.
SISTEM PENDETEKSI PENULISAN KATA PADA DOKUMEN BERBASIS WEB andika Saputra; Dwi Sakethi; Yohana Tri Utami
Jurnal Komputasi Vol 9, No 1 (2021): Komputasi
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v9i1.2793

Abstract

The process of detecting writing errors manually takes a lot of time and requires a source of reference to prove the truth of writing words. The efficiency of time required if done manually certainly will not be optimal, so we need a word writing error detection utility that is expected to make it easier to check errors in a document of type word (.docx). In the process of developing this utility through several stages of the process, namely Cleansing, Case Folding, Tokenization, Stemming and Dictionary Lookuup. The result of the docx document being processed is influenced by the completeness of the dictionary used as a reference for word correction and the type of word spelling errors
Studi Mobile Commerce Di Bandar Lampung Tristiyanto Tristiyanto; Syintia Dwi Nurrahmi; Yunda Heningtyas
Jurnal Komputasi Vol 9, No 1 (2021): Komputasi
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v9i1.2741

Abstract

The online shopping process in Bandar Lampung is facilitating by mobile commerce online shopping. The factor of using online shopping mobile commerce has never been analyzed based on the public perception in Bandar Lampung. This research discusses using mobile-commerce online shopping using the UTAUT2 model with Perceived Risk manifestations, namely Security Risk and Privacy Risk. The mobile commerce applications analyzed were Shopee, Lazada, Tokopedia, Bukalapak, and Blibli. The purpose of this research was to determine the UTAUT2 variable with the manifestation of Perceived Risk, namely Security Risk and Privacy Risk, which affect the use of online shopping mobile commerce. The data analysis method used is Structural Equation Modeling (SEM) with Partial Least Square (PLS) approach. The total number of respondents obtained was 183 respondents. The data tested were 373 data. This research results from the factors that most influence the behavioral intention and use behavior of mobile commerce online shopping is a habit.
Web Service Sistem Informasi Terpadu (SIMIPA) Menggunakan REST API Ardiansyah Ardiansyah; Didik Kurniawan; Dwi Sakethi; Bustomi bustomi; Bambang Hermanto
Jurnal Komputasi Vol 9, No 2 (2021)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v9i2.2869

Abstract

SIMIPA web service is a service that is used to provide services in the form of information to the Android mobile apps, is the Student module, the Lecturer module, and the Parent module. The service provided uses the REST API as a bridge between the server and the client. The goal is that the REST API can be accessed on the Android mobile apps. The development of web services in this study uses the Scrum development method which has 26 product backlogs with 9 iterations of sprints. Each sprint has several stages, namely sprint planning, daily sprint, sprint review, and sprint retrospective. Web services developed using the PHP programming language and MySQL database. The result of this research is the SIMIPA REST API which can be accessed on the Android front-end. Android accesses the REST API via the GET and POST request methods using a URL that generates a JSON response. Based on several tests, the SIMIPA REST API URL is said to have been successfully developed and can be accessed on Android mobile apps according to the expected response. Data security using the REST API is focused on the POST method using JSON Web Token (JWT).
Iplementasi Fuzzy Pada Monitoring dan Kontrol Kualitas Air Tangki Pembibitan ikan Menggunakan LabView Andi Farmadi; Dwi Kartini; Muliadi Muliadi
Jurnal Komputasi Vol 9, No 2 (2021)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v9i2.2864

Abstract

Abstract — Pada kolam pembibitan ikan, pengamatan kualitas air harus terus dilakukan secara berkala karena kondisi pembibitan ikan merupakan masa rawan kematian yang diakibatkan oleh perubahan kondisi lingkungan pembibitan, parameter yang paling berpengaruh dalam kelangsungan hidup ikan yaitu kondisi keasaman air (Ph), kekeruhan air (Turbidiy), oksigen terlarut dalam air (DO) dan suhu air. Parameter tersebut harus selalu dimonitor dan dikontrol untuk mencapai kestabilan lingkungan pembibitan sesuai yang diharapkan. Telah dibuat sistem monitoring dan kontrol terhadap parameter yang berpengaruh pada pembibitan ikan menggunakan sistem fuzzy inferensi. Pengukuran parameter lingkungan dilakukan menggunakan sensor kemudian nilai parameter tersebut disesuaikan dengan nilai fuzzifikasi yang telah dibuat hingga menghasilkan nilai defuzzifikasi, output dari defuzzyfikasi akan melakukan kontrol terhadap parameter tersebut untuk mencapai nilai kestabilan lingkungan air. Pengontrolan Ph dan kekeruhan air dilakukan dengan mengganti air hingga mencapai tinggkat ph dan kejernian air yang sesuai kondisi yang diharapkan, jumlah buangan air dapat dihitung menggunakan teorema fluida. Perhitungan fuzzy dan Pengembangan antarmuka monitoring dan kontrol dibangun menggunakan program berbasis grafik LabView.
IMPLEMENTASI METODE FUZZY LOGIC PADA SISTEM PAKAR PENDETEKSI KECERDASAN ANAK Devira Asha; Muhamad Bahrul Ulum; Yuli Asmi Rozali
Jurnal Komputasi Vol 9, No 2 (2021)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v9i2.2861

Abstract

The multiple intelligences proposed by Dr. Howard Gardner in his book entitled Frame of Mind states that every child has unique and different characteristics and does not only focus on one intelligence. Parents who don't know how to improve their children's intelligence from all categories of intelligence, and only focus on language and logic intelligence, are considered as intelligent benchmarks for children. This expert system application aims to facilitate parents in knowing the level of intelligence of children so that children get the opportunity to develop at least from various dimensions such as musical, kinesthetic, intra and interpersonal, etc. This study applies calculations using the Mamdani fuzzy logic method. The results of this study are able to identify children's intelligence by designing a fuzzy expert system where input variables and output variables are generated from interviews with experts who produce 45 input variables and 9 outputs. For example, the calculation in this study uses 5 input variables and 1 output variable with the number of rules generated, namely 243 rules. The results obtained from the manual calculation of the fuzzy logic method are 50.68 with a fairly intelligent level of medium level. The system development method used in this research is the extreme programming method with the Laravel framework. This website-based expert system application is also a place for information on multiple intelligences where this information will be useful to find out how to improve children's intelligence from all categories of intelligence.

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