Theophilus Erman Wellem
Universitas Kristen Satya Wacana

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Generator Melodi Berdasarkan Skala dan Akord Menggunakan Algoritma Genetika Nugroho, Adi; Wellem, Theophilus Erman; Nugroho NW, Andi Taru
Jurnal Informatika Vol 5, No 1 (2009)
Publisher : Universitas Kristen Maranatha

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Abstract

Genetics algorithm can be used to help automation process especially in musical field and to generate melody. Scaled  is used as  initial population and chord  is used as  fitness value calculation and  the  last best  ten generated  chromosome will be used. Genetics algorithm parameters  tested  to see  the chord percentage  in  the generated melody. Those parameters have  great  influence  to  the  chord  formula  and  to  the  generated melody.  The  higher  the parameter,  the  higher  chord  percentage,  except  for  tournament  size  and  crossover  rate. Tournament size does not have  influence. Whereas crossover rate  is reverse equivalent  to the chord percentage.  Keywords : Genetic Algorithm, Scale, Chord, Melody Generator.
Representasi Grafik Multi-Level Berbasis SVG untuk Aplikasi Rich-Content Majalah Mobile Nugroho, Adi; Wellem, Theophilus Erman; Dewi, Geuis Puspita
Jurnal Sistem Informasi Vol 4, No 1 (2009)
Publisher : Universitas Kristen Maranatha

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Abstract

The discovery and creation of a new variety of mobile content  is  in a huge demand, but  its  development  is  still  limited  due  to  the  limitations  of mobile  devices,  especially  in informational contents; most of them are still text-based, for example SMS-based news and RSS Feeds. This  is because handling graphical data  is still expensive regarding resources of the mobile device, which means the rendering and parsing process will suffer. This  study  investigates  how  Scalable  Vector  Graphics  (SVG),  an  open  standard XML-based  graphic  format,  can  be  used  for  representing  graphical  information hierarchically  in  a multi-level  representation  system. Based  on  this  system,  a  new  Javabased  mobile-magazine  content  service,  which  contains  richer  information  as  a  real magazine, is developed and tested for its performances. From  the experiments and  testing,  the application can pass  the Sun Microsystems’s Unified Testing Criteria for Java (TM) Technology-based Applications for Mobile Devices Version 2.1 at the level of 93.75% and shows a good performance of parsing and rendering of the graphical information and image.  Keywords :  mobile  computing,  multi-level  graphics  representation,  mobile magazines, mobile contents