A new X-band retrodirective antenna based on superheterodyne mixer and phase conjugating technology is proposed for inter-satellite data transmission in this paper.The novel phase conjugating circuit, utilizing the reciprocity of the passive mixers, achieves high Beauty RF-IF and LO-IF isolations, high communication link gain, and a very compact lo
This paper recounts the results of a medico-technical study of the successful experience of Iran during the Iran-Iraq war.It draws mainly on the first-hand experiences of the first author in design and construction of military medical care buildings during the war.To this end, it explains five levels of military medical care system that include: (i
This is a reflexive article which explains other possibilities and acknowledgements to the use of the visual image in the new ways of communication used at school, through the development of some strategies of action related to the contemplation and the image Speaker Grille production: first, negotiate the tendency to the images transmission as a t
Epizootic hemorrhagic disease virus (EHDV) is an arthropod-transmitted RNA virus and the causative agent of epizootic hemorrhagic disease (EHD) in wild and domestic ruminants.In North America, white-tailed deer (WTD) experience the highest EHD-related morbidity and mortality, although clinical disease is reported in cattle during severe epizootics.
Abstract Simultaneous tracking of multiple persons in real-world environments is an active research field and several approaches have been proposed, based on a variety of features and algorithms.Recently, there has been a growing interest in organizing systematic evaluations to compare the various techniques.Unfortunately, the lack of common metric