List of Articles Open Access Article Abstract Page Full-Text 1 - Optimizing speed and angle control of stepping motor by using field oriented control Ahad Golipour Open Access Article Abstract Page Full-Text 2 - Designing Fuzzy Controller for Air Conditioning Systems in order to Save Energy Consumption and Provide Optimal Conditions in Closed Environments (Indoors) Alireza Soleimanzadeh Open Access Article Abstract Page Full-Text 3 - The compression of MPPT methods in small sized wind power plants Ramin shirmohammadi Vahid rezanejad Ali ajami Open Access Article Abstract Page Full-Text 4 - Velocity Control of Electro Hydraulic Servo System by using a Feedback Error Learning Method Saeideh yaghobi sajad yaghobi Open Access Article Abstract Page Full-Text 5 - Novel Circularly Polarized Substrate Integrated Waveguide Slot Antenna By Using A Polarizer Technique Omid Khodadad Pejman Mohammadi Open Access Article Abstract Page Full-Text 6 - Economic possibility assessment of creating wind power stations at Soltanieh zone of Zanjan province Davoud Karimzadeh