In wireless sensor networks, the lifetime of a sensor network is a hottest research topic. Clustering provides an efficient method for increasing the network lifetime. Existing clustering algorithms selects the cluster head with high residual energy and rotates the cluster head periodically to distribute the energy among the nodes in each cluster. Cluster head has the responsibility for collect...

Abstract The paper considers the role of development corporate social responsibility Ukrainian nuclear energy producers to ensure effective functioning this industry. National sustainable in all and economic spheres depends heavily on employee management where safety plays main role. purpose article is evaluate NNEGC “Energoatom” identify reserves for improving enterprise management. To achieve...

Sensor network deployment and its maintenance are very challenging due to hostile and unpredictable nature of environments. The field coverage of a wireless sensor network (WSN) can be enhanced and consequently network lifetime can be prolonged by optimizing the sensor deployment with a finite number of sensors. In this paper, we propose an energy-efficient fuzzy optimization algorithm (EFOA) f...

One of the hottest research topics is how to reduce energy consumption to prolong the lifetime of a WSN. Some nodes of a WSN may be isolated from others, particularly when all their neighbors have crashed or run out of energy, and are thus no longer helpful in collecting and relaying messages, even though their batteries still retain some level of energy. To avoid this, in this paper, we propos...

Energy consumption share in construction part and dependent industries is about 40 percent of total energy consuming in Iran which is significant compared to other industries such as transportation, agriculture and therefore is of important. As energy consumption reduction and material durability improvement leads to cost reduction from one hand and environment pollution reduction on the othe...

nowadays, wireless sensor network has been of interest to investigators and the greatest challenge in this part is the limited energy of sensors. sensors usually are in the harsh environments and transit in these environments is hard and impossible and moreover the nodes use non- replaceable batteries. because of this, saving energy is very important. in this paper we tried to decrease hard and...

The technical principles and practices of the civil nuclear industry are described with particular reference to fission and its products, natural and artificial radioactivity elements principally concerned and their relationships, main types of reactor, safety issues, the fuel cycle, waste management, issues related to weapon proliferation, environmental considerations and possible future devel...

Background: The nuclear medicine systems are very sensitive to the variation of the magnetic field. Photomultiplier tubes amplify low energy light signal and change it into electrical current. Low magnetic field can produce some variations in uniformity and special resolution of SPECT systems. In this study, we tried to evaluate the effects of magnetic field on the function of nuclear medic...