Vol. 25, No. 2 - December 2021 Editor's Column Mladen Knezic Peer-to-Peer Energy Trading in a Micro-grid Using Internet of Things and Blockchain Mirza Jabbar Aziz Baig, M. Tariq Iqbal, Mohsin Jamil and Jahangir Khan Prediction Model of Soil Electrical Conductivity Based on ELM Optimized by Bald Eagle Search Algorithm Ying Huang, Hao Jiang, Weixing Wang and Daozong Sun Single Event Effect Analysis of SiGe Low Noise Amplifier Manel Bouhouche, Saida Latreche A Current Mode Universal Filter and a Single Resistance Controlled Oscillator Employing only Grounded Passive Elements: Applications of VDCC Tajinder Singh Arora Download full issue