RRB Technician 2026 notification released on 30th 2026 for 6,557 vacancies. The Computer-Based Test (CBT) has 100 questions, 90 mins, and 1/3 negative marking. Syllabus and exam patterns differ for ...

Abstract: Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal propagation in wireless networks. By smartly tuning the signal reflection via a large number of ...

Abstract: During the last decade, possibilities to realize new phenomena and create new applications by varying system properties in time have gained increasing attention in many research fields.