Megaconstellation networks, represented by Starlink and OneWeb, have become a promising solution for the wide-area Internet of Things (IoT). IoT messages collected satellite can be routed to ground gateway via multiple intersatellite link (ISL) relays then access network. Compared traditional constellations, megaconstellations with massive satellites require more ISL that are greatly affected n...

BACKGROUND Inflammatory bowel diseases contain two digestive system diseases, ulcerative colitis (UC) and Crohn’s disease with unclear causes. The aim of present study was to investigate the therapeutic effects of administration of the Sesame oil (SO) and grape seed oil (GSO) as enema route in rats suffering from experimental acetic acid induced UC.  METHODS Eighty male rats were ...

We have developed a position-sensitive scintillation camera with a large area absorber for use as an advanced Compton gamma-ray camera. At first we tested GSO(Ce) crystals. We compared light output from the GSO(Ce) crystals under various conditions: the method of surface polishing, the concentration of Ce, and co-doping Zr. As a result, we chose the GSO(Ce) crystals doped with only 0.5 mol% Ce,...

This paper presents a robust hybrid improved dolphin echolocation and ant colony optimization algorithm (IDEACO) for optimization of truss structures with discrete sizing variables. The dolphin echolocation (DE) is inspired by the navigation and hunting behavior of dolphins. An improved version of dolphin echolocation (IDE), as the main engine, is proposed and uses the positive attributes of an...

A high sensitivity, high resolution brain PET scanner has been developed. The scanner comprises 58 rows of 320 4 x 4 x I O mm3 gadolinium orthosilicate (GSO) crystals, coupled to a continuous light guide that is sampled by 288 39-mm photomultiplier tubes in a hexagonal grid. A distortion removal algorithm has been developed to remove position non-linearities and to identify individual crystal r...

In recent years, unmanned aerial vehicles (UAVs) have become the trend for different types of research and applications. UAVs can accomplish some technical risky tasks while still being safe, mobile, inexpensive to operate. However, need flying ad-hoc networks (FANET) operate in inaccessible or infrastructure-less areas. Subsequently, many military civil applications, are connected ad hoc. FANE...

the multivariate exponentially weighted moving average (mewma) control chart is one of the best statistical control chart that are usually used to detect simultaneous small deviations on the mean of more than one cross-correlated quality characteristics. the economic design of mewma control charts involves solving a combinatorial optimization model that is composed of a nonlinear cost function ...

This paper focuses on the allocation of channel resources in cognitive radio system. Here, Cognitive (RRM) technology is envisaged to solve the problems in wireless networks resulting from the limited available spectrum. RRM developmental growth is high in advanced generations .Moreover, this paper focus on proposing an improved version of the recently introduced optimization algorithm called a...