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INDONESIA
Jurnal Sistem Komputer
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Computer Science & IT
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 4, No 1 (2014)" : 5 Documents clear
Implementasi Multithreading Untuk Meningkatkan Kinerja Information Retrieval Dengan Metode GVSM Pardede, Jasman
Jurnal Sistem Komputer Vol 4, No 1 (2014)
Publisher : Jurnal Sistem Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsk.v4i1.59

Abstract

GVSM is one of the models of IR systems. GVSM divided into two processes i.e. preprocessing process namely reading the text (*.pdf, *.doc,*.docx), tokenization, filtration, stemming, and parse the query and the process of calculating the relevance of the document that has been done preprocessing with user query to get the value of similarity. In general, to determine of the effectiveness of IR application is determined by two factors, namely recall and precision [7,8,10]. According to Järvelin and Ingwersen, the effectiveness of IR application is not only determined by the recall and precision, but rather the ability of IR applications in helping users to complete the search more effective and efficient. The effectiveness of an IR application is determined by recall, precision, time requirements, and reporting documents are presented to the user [7]. To improve the performance of IR applications in time requirements is implemented multithreading in the preprocessing process, i.e. stage 1 to stage 4 GVSM method. The result showed that the method GVSM able to rediscover relevant documents with 100% the precision value, to get the recall value which is equal to the same documents collection either with or without multithreading, but can save processing time by over 50 %.
Sistem Pendukung Keputusan Pengelompokan Siswa Berdasarkan Gaya Belajar Felder-Silverman Cahyani, Andharini Dwi
Jurnal Sistem Komputer Vol 4, No 1 (2014)
Publisher : Jurnal Sistem Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsk.v4i1.61

Abstract

Penerapan teknologi informasi dalam bidang edukasi dewasa ini meningkat pesat. Penerapan TI tersebut tidak hanya dalam penggunaan media pembelajaran berbasis multimedia saja, tetapi juga dalam pelaksanaan pembelajaran berupa e-learning, Dalam perkembangannya, agar proses pembelajaran berjalan dengan efektif, maka diperlukan belajar secara berkelompok. Ide tersebut bukanlah suatu hal baru karena bekerja dalam kelompok memberikan lingkungan untuk belajar secara kolaboratif serta berbagi ide dan pengetahuan. Agar tiap anggota kelompok merasa nyaman, maka siswa dikelompokkan berdasarkan gaya belajar yang dimilikinya. Dari hasil kuesioner gaya belajar siswa, kemudian dilakukan teknik clustering fuzzy c-means untuk membentuk kelompok siswa. Hasil clustering tersebut kemudian dianalisa dengan menggunakan indeks Davis-Bouldin. Dari hasil ujicoba menunjukkan bahwa hasil clustering paling homogen ketika set parameter jumlah cluster = 4 dan jumlah iterasi = 20 kali.
APLIKASI SENSOR LDR (LIGHT DEPENDENT RESISTANT) SEBAGAI PENDETEKSI WARNA BERBASIS MIKROKONTROLER wiryadinata, romi; Lelono, Joko
Jurnal Sistem Komputer Vol 4, No 1 (2014)
Publisher : Jurnal Sistem Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsk.v4i1.62

Abstract

Spektrum cahaya merupakan susunan cahaya berwarna yang tampak, setiap warna mempunyai panjang gelombang yang berbeda. Sensor LDR dapat mengetahui perbedan intensitas cahaya tampak berdasarkan perubahan nilai resistansinya. Dengan memenafaatkan rangkaian pembagi tegangan pada LDR dan nilai ADC pada mikrokontroler maka perbedaan warna dapat dikenali. Sensor warna yang dibuat mampu membedakan 6 jenis warna yaitu merah, hijau, biru, kuning, putih, dan hitam. Dari hasil pengujian sensor warna mampu mendeteksi warna dengan baik walaupun diberi sinar gangguan.
Mobile Augmented Reality Jurusan Sistem Komputer Universitas Diponegoro Berbasis Android (MARSISKOM) Teguh Martono, Kurniawan; Kridalukmana, Rinta
Jurnal Sistem Komputer Vol 4, No 1 (2014)
Publisher : Jurnal Sistem Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsk.v4i1.64

Abstract

Department of Computer system Diponegoro University , Faculty of Engineering is one of the majors are still young . The department has several areas of specialization for students . Areas of specialization include Software Engineering , Computer Networks , Embedded Systems and Robotics and Multimedia . Majors but it also has some buildings that are used as a laboratory , classroom and centralized administration . To help facilitate students and the general public in recognizing or knowing the location of each of the buildings with the development of computer technology can be facilitated . One technology that can be applied is by using augmented reality technology which is combined with mobile communication devices . This study uses peracangan software system using the waterfall model . This model is a systematic approach and sequence ranging from system level requirements and then headed to the stage of analysis , design , coding , testing / verification , and maintenance . Referred to as step -by-step waterfall that must be passed pending the completion of the previous stage and run sequentially . System testing performed by menggukan black box testing which aims to determine the functionality of the system . System testing that has been done is stated that the system is run in accordance with what is expected . Testing the functionality of the system can be run on mobile devices with android operating system version of the jelly bean .
Soccer Game Optimization: Fundamental Concept Purnomo, Hindriyanto Dwi
Jurnal Sistem Komputer Vol 4, No 1 (2014)
Publisher : Jurnal Sistem Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsk.v4i1.63

Abstract

Optimization is important in science, engineering, economic as well as daily problems. The number of optimization methods increase continuously due to the growing optimization problems. In this study, we discussed the fundamental concept of soccer game optimization (SGO), a new algorithm inspired by the soccer player movements. The method consists of two basic movements; the move off and the move forward, to control the diversification and intensification and a player substitution procedure to keep the good solution during the search. The SGO elaborates the competition and the reproduction process in evolutionary algorithm with the powerful information sharing of swarm intelligence algorithm. As a new method, the SGO can be enhanced in many different ways such as elaborating more aspects of the soccer players’ movement as well as implementing the proposed method to solve various optimization problems

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