The use of wireless sensor networks to monitor and control the precise agriculture is one of the areas which received broad concern in recent times, for the services, facilities and the reliability provided by these networks on the monitoring and con
trol level.
This research contributes to the study of the application of this technique in greenhouses deployed over large areas in our country. It offers solutions for networks of monitoring and control, in real time, and ensures a good performance according to the essential evaluating criteria, such as reducing the time-delay, and increases throughput, increases the delivery ratio of packets, and reduces the number of packets lost along with increased network load.
In order to do that, a number of scenarios are proposed. These scenarios are similar to the reality of the construction and operation of the greenhouses in our region relying on ZigBee technique. Wireless sensors networks of these scenarios have been tested, using simulation in order to make conclusion and recommendations to guide the work while installing such networks in place to work as their best for different areas and a large number of lounges
The spread of the modern data transfer techniques, in modern industrial and agricultural applications, and service areas, leads to the need to transfer this data effectively and flexibly, within installations parts.
This research aims to apply the h
ybrid mechanism, based on the use of ZigBee technology, and CAN Bus together to ensure the best performance, in accordance with the performance indicators required by the networks of these facilities, in near-real time operation. The study attempts to compare this mechanism with other mechanisms proposed in similar research.
The proposed solution supports the use of a hybrid data transfer networks, based on the internetworking of CAN Bus networks, using a backbone based on wireless ZigBee technology. This solution proposes an appropriate structure for gateways between the hybrid parts of the network. The research has concluded that the proposed mechanism preference, compared with the proposed mechanisms in similar research, according to the standards of performance indicators, is suitable for this kind of networks, as it allows us to recommend the use of this mechanism in the service and industrial applications. The NS2 network simulator is used to evaluate and compare the obtained results.
The wireless sensors network applications are widely used in health monitoring systems. In fact, they contribute to the qualitative development of these networks so as to ensure the tireless clock surveillance, and improve and regulate the quality of
monitoring. Associated with improving the performance of wireless medical sensor networks WMSN is improving data transfer mechanism which is one of the most important areas of interest to research and study in recent times.
Hence the importance of this research lies in the study of the structures of wireless sensor networks that can be used to control the wards in hospitals, health centers and monitoring care. The research also draws necessary recommendations and suggestions for the selection of appropriate medical wireless sensors networks structure and proposees appropriate medium access control mechanism in order to build networks of different sizes.
This has been done by proposing appropriate scenarios for surveillance applications to perform simulation that is similar to the working conditions of the networks. This can ensure the transfer of nodes data to the main access point and can give an opportunity to study the impact of network architecture and how to use the data transfer technology, specifically the use of ZigBee technology, both with beacon mode enabled inenabled. Improvement was evaluated based on the basic parameters in such networks, such as throughput, the time delay, and the delivery ratio. The study found a set of recommendations regarding the size of the network, the type of structure and the mechanism used to access medium.
Studying the mechanics of particle systems in special relativity is one of the most
complex issues. However, this study sets us up to lay the groundwork for building a set of
important laws. The motion of particle masses as a whole was determined b
y their energy,
impulse and static mass. It was also found that the total energy of the system of mutual
action requires taking into account the energies of these mutual acts between the particles.
Contrary to the systems of the mutual acts of collisions, approximate formulas for
interplay between charged particles were determined by studying the collision of
relativistic particles-Compton's effect.
Finally, the case of the movement of the charged particles of weak interacts was
discussed, and the movement of the interconnected particles was discussed through mutual
electromagnetic acts using the concept of mutual action between the particles of the
system.
