Title	An Improvement Approach for Reducing Dimensionality of Data with Matrix Decomposition in Data Mining
Author	Sasan Jamshidzadeh, Javad Hosseinkhani
Citation	Vol. 16  No. 12  pp. 11-14
Keywords	Dimensionality of Data, Data Mining, Matrix Decomposition dimensionality reduction

Title	Design Transfer impedance amplifier circuit with low power consumption and high bandwidth for Optical communication applications
Author	Nader Naderbeigi, Mohamadreza Soltani, Iman chaharmahali
Citation	Vol. 16  No. 12  pp. 15-25
Keywords	Transfer impedance amplifier, optical receiver, Limiting amplifier, CMOS

Title	Comparing the Methods of Creating Educational Timetable
Author	Vahideh Sahargahi, Mohammadreza Feizi Drakhshi
Citation	Vol. 16  No. 12  pp. 26-36
Keywords	Educational Timetable, Evolutionary Algorithms, Hard and Soft Limitations

Title	Presenting a Way to Improve Web Page Ranking Algorithm Using Firefly Algorithm
Author	Fariba karimi, Damavand, Ali Harounabadi, Seyed javad mirabedini
Citation	Vol. 16  No. 12  pp. 37-42
Keywords	Web mining, ranking, PageRank algorithm, fireflyy colony algorithm