List of Articles Open Access Article Abstract Page Full-Text 1 - GSM mobile network and its security problems Mohammad Amir Ghasemi Shabankareh Sara Rahimi Javanmardi Open Access Article Abstract Page Full-Text 2 - Finding optimal solutions using the method of genetic algorithm Mahbubeh Bahrayni Open Access Article Abstract Page Full-Text 3 - Implementation of Crank Nicholson (CN) Light Radiation Diffusion Algorithm with Limited Difference Ayat Akbari Arman Ghasemi Mohsen Kamyar Nooshin Rabiee Open Access Article Abstract Page Full-Text 4 - Estimation for signal reception in mobile smart antennas Farnush Heidari Open Access Article Abstract Page Full-Text 5 - Investigation of flat antennas on photonic and bipolar crystal substrates Mahbobeh Bahraini Open Access Article Abstract Page Full-Text 6 - A new method based on closed loop control of dynamic voltage regulator Majid Delshad Bahador Fani