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Jurnal Sistem Komputer
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Computer Science & IT
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Articles 6 Documents
 1 
Search results for , issue "Vol 2, No 1 (2012)" : 6 Documents clear
Instant Image Resizer Kridalukmana, Rinta
Jurnal Sistem Komputer Vol 2, No 1 (2012)
Publisher : Jurnal Sistem Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsk.v2i1.19

Abstract

Today, digital technology is entering people’s life in many of forms, including digital images.  As the increase of digital images quality, the size and dimension is bigger as well. Problem such as uploading time arises. Tools to make image file smaller in both size and dimension instantly is needed especially for instant purpose like sending via email or upload to social network sites. Developed in .Net Framework environment, Instant Image Resizer software will try to be one of tool that work instantly for resizing image. As resampling method, HighQualityBicubic will be used to achieve optimum quality. As user interface, this tool will use shortcut menu on Windows Operating System so user can access easily and instantly can give resize command to image file. Shortcut menu will be use context menu handler to handle verbs and file association that related to image in Windows Operating System. And as a software development approach, waterfall methodology will be used.Permalink: http://jsiskom.undip.ac.id/index.php/jsk/article/view/19
Rancang Bangun Sistem “Permadi” : Peringatan Dini Serangan Hama Tanaman Padi Berbasis Data Historis Klimatologi Wahyono, Teguh; Subanar, Subanar
Jurnal Sistem Komputer Vol 2, No 1 (2012)
Publisher : Jurnal Sistem Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsk.v2i1.21

Abstract

The dynamics of extreme climate change is happening lately it affects the intensity of pest attacks. Like other living creatures, live of pests affected by climatological factors such as temperature, humidity, rainfall and so forth. This study aims to develop an early warning model the emergence of the rice plant pests (PERMADI), especially rodents and WBC based on historical data of climatology. In this case, bayesian algorithm do statistical calculation depend on the input variables are temperature, humidity and rainfall. Output expected is early warnings the emergence of the rice plant pests using SMS Gateway. Case study of this research is taking the data from 6 (six) districts in Central Java (Sragen, Karanganyar, Wonogiri, Sukoharjo, Klaten and Boyolali).Permalink: http://jsiskom.undip.ac.id/index.php/jsk/article/view/21
ANALISA PENGARUH PENAMBAHAN SILANE TERHADAP UNJUK KERJA ISOLATOR BAHAN RESIN EPOKSI DENGAN KONTAMINAN PANTAI SYAKUR, abdul; Hermawan, Hermawan; Susilawati, Dyah Ika
Jurnal Sistem Komputer Vol 2, No 1 (2012)
Publisher : Jurnal Sistem Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsk.v2i1.23

Abstract

Salah satu bahan polimer yang dikembangkan sebagai isolator adalah Resin Epoksi. Bahan polimer ini memiliki kelebihan dibandingkan dengan isolator bahan isolasi keramik dan gelas. Isolator yang digunakan pada saluran transmisi dan jaringan distribusi seringkali melalui daerah pantai yang memiliki pengaruh terhadap kinerja isolator. Adanya kontaminan di udara dapat menempel pada permukaan material isolasi pasangan luar sehingga menyebabkan arus bocor mengalir pada permukaan isolator tersebut. Arus bocor ini merupakan peristiwa awal yang dapat mengakibatkan degradasi permukaan isolator yang lama-kelamaan menyebabkan terjadinya kegagalan isolator. Makalah ini mempresentasikan hasil pengukuran arus bocor skala laboratorium pada bahan material resin epoksi silane dengan menggunakan metode pengukuran Inclined-Plane Tracking (IPT). Pengukuran ini dilakukan untuk mengetahui pengaruh variasi komposisi silan terhadap sudut kontak hidrofobik dan arus bocor. Pengolahan data yang dilakukan meliputi pengukuran sudut kontak, waktu terjadinya arus bocor, arus bocor rata-rata, dan waktu penjejakan. Berdasarkan hasil pengukuran dan analisis data menunjukkan bahwa komposisi silan mempengaruhi sudut kontak, waktu terjadinya arus bocor, besar arus bocor rata-rata, dan waktu penjejakan. Dilihat dari keseluruhan faktor yang diukur, maka didapatkan komposisi bahan yang optimal yaitu resin epoksi dengan persentase silane 30%.Permalink: http://jsiskom.undip.ac.id/index.php/jsk/article/view/23
Aplikasi Bergerak dengan Java J2ME untuk Pelaporan Penyelidikan Epidemiologi Penyakit Demam Berdarah Iman Satoto, Kodrat; Isnanto, Rizal; Aditya, Firdaus
Jurnal Sistem Komputer Vol 2, No 1 (2012)
Publisher : Jurnal Sistem Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsk.v2i1.27

Abstract

Nowadays, reporting system of Dengue Hemorrhagic Fever Epidemiologic investigation (PE DBD) in Health Department uses manual recording system. It takes more times for printing as well as for reading. This inefficient system will affect a longer decision making to handle the spread of dengue fever in Semarang. Therefore, a research is needed to overcome these problems, i.e. by developing mobile application embedded in cell phone and web application as administrator to facilitate the data management transmitted. There are several steps taken in this research. First, analyzing the existing system in Health Department. Second, designing system with Unified Modeling Language (UML). Third, developing an application using Java J2ME for client and Java J2EE for server as programming language and MySQL as database server. The last step is application testing.. Based on research results, it can be concluded that this application has been able to facilitate and accelerate the process of reporting the current PE dengue disease. Users consist of officers of PE as a user of mobile applications for data entry operator of PE DBD and P2P as web application server administrator. Through a web application, administrators can print data input PE of phone listed in the form of dynamic HTML.Permalink: http://jsiskom.undip.ac.id/index.php/jsk/article/view/27
Sistem Pengenalan Iris Mata Berdasar Tekstur Menggunakan Ekstraksi Ciri Energi pada Alihragam Wavelet Haar Isnanto, R. Rizal; Santoso, Imam; Dwi Prihartono, Teguh; Sri Widodo, Thomas; Suhardjo, Suhardjo; Susanto, Adhi
Jurnal Sistem Komputer Vol 2, No 1 (2012)
Publisher : Jurnal Sistem Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsk.v2i1.28

Abstract

Human iris has a very unique pattern which is different for each person so it is possible to use it as a basic of biometric recognition. To identify texture in an image, texture analysis method can be used. There is some texture analysis method, one of them is wavelet that extract the feature of image based on energy. The texture analysis using energy features which are in the wavelet transform. Based on that reason, in this research made a simulation to identified eyes iris based on Haar wavelet transform. First, the image of iris is segmented from eye image then enhanced with histogram equalization. The method used to extract the feature is Haar wavelet transform. The features obtained is energy value. The next step is recognition using normalized Euclidean distance. Four experiments are done in the research, those are influence of number of sample in database, influence of Haar wavelet transform level, influence of different input image format and testing on eye images which are not in database. As the result, the highest accuration is achieved using Haar wavelet transform level 4 with two samples iris image saved is 85,58%. The lowest accuration is achieved using Haar wavelet transform level 1 with one sample iris image saved is 65,27%. Then, from the test result for the influence of different input image format, the .bmp input image format is better than .jpg input image format. Whereas, from the test result for eye images which are not in database with threshold 2,3653, the recognition level is 81,48%Permalink: http://jsiskom.undip.ac.id/index.php/jsk/article/view/28
Front Cover, Editorial Board, Preface and Table of Contents Jurnal Sistem Komputer, Editor
Jurnal Sistem Komputer Vol 2, No 1 (2012)
Publisher : Jurnal Sistem Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsk.v2i1.31

Abstract

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