List of Articles Open Access Article Abstract Page Full-Text 1 - Identification of time-varying systems with smooth changes using basic Legendre functions Amir Yaghubi Hossein Rouzegar Mehrzad Nasirian Open Access Article Abstract Page Full-Text 2 - Investigating the reduction of complexity of existing algorithms and methods in allocating radio resources and channels in OFDMA Mojtaba Ghasemi Amineh Aliasghar Haghighi Open Access Article Abstract Page Full-Text 3 - Analysis and modeling of Class A, D and E phase shift transformers with the aim of improving power quality and stability limits Hani shahnazari Hadi Shahnazarisani Open Access Article Abstract Page Full-Text 4 - A new method of improving fractal image compression by combining block classification and quadratic tree division Jaleh Molaye Zahedi Hamid Dehghani Alireza Malahzadeh Open Access Article Abstract Page Full-Text 5 - improving intrusion detection systems by feature reducing based on genetics algorithm and data mining techniques Mehdi Keshavarzi hossein Momenzadeh Open Access Article Abstract Page Full-Text 6 - Design and implementation of a low voltage regulator and stabilized output using the body power supply solution vahid dahideh hamed aminzadeh عبدالرسول Ghasemi