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All Journal BERKALA FISIKA JURNAL SISTEM INFORMASI BISNIS
Vincencius Gunawan, Vincencius
Fakultas Sains dan Matematika Universitas Diponegoro Semarang
Computer Science & IT Economics, Econometrics & Finance Physics

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PERUBAHAN FUNGSI GELOMBANG ELEKTRON PADA MULTIPLE SCATTERING UNTUK SUDUT HAMBUR NOL Guswantoro, Taat; Nur, Muhammad; Gunawan, Vincencius
BERKALA FISIKA 2014: Berkala Fisika Vol. 17 No. 4 Tahun 2014
Publisher : BERKALA FISIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (254.318 KB)

Abstract

Multiple scattering in the plasma present doe to movement of charged particle influenced by Coulomb interaction between charged particles in the plasma. Research on multiple scattering among influences of effective field on the multiple scattering, lost energy due to scattering processes, the aims of this study are to determine the scattered wave function, multiple scattering cross-sections and scattered electron energy. The understanding of the electron scattering in the plasma in this study using the optical approximation that is application of wave properties of electron. The calculation of  scattered wave function is using first Born approximation, by taking the scattering potential energy is the summary of potential energy of electron by interaction with each ions that present in the plasma sphere. Electron wave function after scattered is changes, though the direction is same with the direction of initial electron coming, presence a reduction in amplitude as a function of the distance the wave trajectory. Keywords: Multiple Scattering, Plasma, Born approximation.
Penerapan Metode Hill Climbing Pada Sistem Informasi Geografis Untuk Mencari Lintasan Terpendek Dangkua, Eka Vickraien; Gunawan, Vincencius; Adi, Kusworo
JSINBIS (Jurnal Sistem Informasi Bisnis) Vol 5, No 1 (2015): Volume 5 Nomor 1 Tahun 2015
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (644.107 KB) | DOI: 10.21456/vol5iss1pp19-25

Abstract

Heuristic search methods is one of the methods commonly in use in finding the shortest path, one of which, namely the methods Hill Climbing process where testing is done using heuristic functions. Problems generally encountered is the shortest path search to solve the problem of distance can be changed into a graph structure, where the point of declaring the city and the State line that connects the two cities. From the logic so that it can locate destinations and save on travel costs. The hallmarks of this algorithm are all possible solutions will have then checked one by one from the left side, so it will be obtained solutions with optimal results. On a Hill Climbing method according to case using geographic information systems as a tool in making a decision, by way of collect, examine, and analyze information related to digital map. with a combination of Hill Climbing method and geographic information systems can result in an application that is certainly feasible for use in the search path problems.   Keywords: Hill Climbin method; digital map; Geographic Information Systems
Penerapan Principal Component Analysis untuk Mereduksi Dimensi Data Penerapan Teknologi Informasi dan Komunikasi untuk Pendidikan di Sekolah Wulandari, Diah; Prahasto, Toni; Gunawan, Vincencius
JSINBIS (Jurnal Sistem Informasi Bisnis) Vol 6, No 2 (2016): Volume 6 Nomor 2 Tahun 2016
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (814.109 KB) | DOI: 10.21456/vol6iss2pp91-96

Abstract

This study aimed to analyze the most influential variable in the implementation of ICT in schools. Principal component analysis  using linear algebra to reduce the dimension of data with variables that are interconnected into a new set of data with variables that are not related to each other, called the principal component. Principal component is used to save and calculate how much correlation within varian. The ICT data is collected from 50 schools, this data is grouped into five group based on reference domain of ICT for education indicator by UIS 2009. Dataset per group is used as input for principal component analysis algorithm with Matlab R2014a and produce principal component. Principal component analysis produce five variable with the most influence based on their domain, there are mean hour for individual using of ICT in curicculum domain, existence school in internet in infrastructure domain, learner proportion in using computer laboratory for learning in teacher development domain, learner propostion that computer basic skill course in participation domain.
Co-Authors Diah Wulandari Eka Vickraien Dangkua, Eka Vickraien Kusworo Adi Muhammad Nur Taat Guswantoro, Taat Toni Prahasto