In telecommunication a Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor .Wireless operations permit services, such as long-range communications, that are impossible or impractical to implement with the use of wires. The term is commonly used in the telecommunications industry to refer to telecommunications systems...

As argued here, wireless networks are inherently less secure than wired networks. However, that does not mean that they are too insecure to be usable. In the wireless world, the range goes from public community networks designed to be accessed by everybody to military networks where lives can be lost if they are compromised. The greater vulnerability of wireless networks does mean that their se...

Wireless networks are on the cutting edge of modern technology and are fast becoming ubiquitous. As a result increasing interest surrounding possible security problems has arisen. This paper offers a general overview of various security schemes designed to protect wireless networks. For each respective scheme, advantages and disadvantages are examined.

this paper proposes an efficient network architecture to improve energy consumption in wireless sensor networks (wsn). the proposed architecture uses a mobile data collector to a partitioned network. the mobile data collector moves to center of each logical partition after each decision period. the mobile data collector must declare its new location by packet broadcasting to all sensor nodes. h...

background: therapeutic and diagnosis properties of radioactive gold nanoparticle (198-aunps) cause them to be suitable for detection and treatment of tumors. objective: electrical and optical properties of peg-198aunps were examined in this paper. polyethylene glycol (peg)-198 aunps can be used for treatment and diagnosis of small intestine tumors. methods: wireless fluorescence capsule endosc...

at present, the solutions to prevent bedsore include using various techniques for movement and displacement of patients, which is not  possible for some patients or dangerous for some of them while it also poses problems for health care providers. on the other hand, development of information technology in the health care system including application of wireless sensor networks (wsns) has led t...

objective: international diabetes organization estimates that there are 285 million people worldwide who suffer from diabetes, and this figure is expected to increase to 450 million in next 20 years. according to statistics issued by the world health organization, diabetes is considered among ten leading causes of death in world and its prevalence in the population is growing.this paper deals w...