An auxiliary radio communication system is a fire extinguishing necessary for smooth between brigade and the ground command departments performing rescue activities at disaster sites such as basements, tunnels, high-rise buildings. The ability to provide field personnel site determines success of operation. However, reinforced concrete structures used in modern buildings reflect, refract, diffr...

This paper investigates a symbiotic unmanned aerial vehicle (UAV)-assisted intelligent reflecting surface (IRS) radio system, where the UAV is leveraged to help IRS reflect its own signals base station, and meanwhile enhance transmission by passive beamforming at IRS. First, we consider weighted sum bit error rate (BER) minimization problem among all IRSs jointly optimizing trajectory, phase sh...

The Land Mobile Radio System provides a radio voice broadcast system in public and private domains. Public is used by government departments like police, fire, ambulance to provide security safety services the common man. In these services, speech quality prime factor for evaluating performance of networks. There are different standards laid assessment. ITU-T recommendations G.107, named as E m...

The topic of cognitive radios has been garnering a great deal of attention in the past several years. Opinions regarding the level of sophistication necessary to qualify a system as cognitive vary widely, and discussions have ensued regarding this technology. The software defined radio forum is also involved and has working group activity in the area of cognitive radio. Some of the working grou...

radio-protectors are agents that protect human cells and tissues from undesirable effects of ionizing radiation by mainly scavenging radiation-induced free radicals. although chemical radio-protectors diminish these deleterious side effects they induce a number of unwanted effects on humans such as blood pressure modifications, vomiting, nausea, and both local and generalized cutaneous reaction...

background: media advertisements especially radio and tv are one of the most important and effective ways for health promotion and consumption of healthy productions worldwide. ministry of health and some other ministries in iran agreed to control and restrict the advertising of unhealthy products and services. therefore, adequate supervision and monitoring should be done in this field.  a cont...

We present Australia Telescope Compact Array radio continuum observations of the quasar/galaxy system HE0450−2958. An asymetric triple linear morphology is observed, with the central radio component coincident with the quasar core and a second radio component associated with a companion galaxy at a projected distance of 7 kpc from the quasar. The system obeys the far-infrared to radio continuum...