background: due to embargoes and sanctions from 1979 until 2015, impact on scientific research in iran may be critical. public health is the main example of this burning point. in this paper, the aim was to map the scientific research in public health in iran until 2014 with area studies as well as networks of countries involved. methods: we used bibliographic analyses using vos viewer software...

The COVID-19 pandemic had an unprecedented impact on the civil aviation passenger transport industry. This study analyzes scale change and spatial distribution of Chinese main air network (CMATN) its role in early spread using a complex analysis method econometric model. result shows that CMATN is mainly located economically developed densely populated central eastern regions China. normalized ...

providing a high-quality service for transmission and playing real-time voice conversations (voice streaming) over wireless ad-hoc networks is no mean feat. buffering together with adjusting the playout time of the packets is a receiver-side solution to overcome this challenge. in this paper, a new adaptive playout adjustment algorithm is proposed to stream the voice conversations over wireless...

We give an update on the worldwide spoligotype database, which now contains 3,319 spoligotype patterns of Mycobacterium tuberculosis in 47 countries, with 259 shared types, i.e., identical spoligotypes shared by two or more patient isolates. The 259 shared types contained a total of 2,779 (84%) of all the isolates. Seven major genetic groups represented 37% of all clustered isolates. Two types ...

network sensors consist of sensor nodes in which every node covers a limited area. the most common use ofthese networks is in unreachable fields.sink is a node that collects data from other nodes.one of the main challenges in these networks is the limitation of nodes battery (power supply). therefore, the use oftopology control is required to decrease power consumption and increase network acce...

As the core component of valve cooling system in a converter station, main pump plays major role ensuring stable operation valve. Thus, accurate and efficient fault diagnosis according to vibration signals is positive significance for detection failure equipment reducing maintenance cost. This paper proposed new neural network based on classify four faults one normal state pump, which consisted...