Báo cáo hóa học: " Research Article Impact of Radio Link Unreliability on the Connectivity of Wireless Sensor Networks" pptx

... optimal number of samples to be encoded in each of the L timeslots as a function of the channel conditions of that particular timeslot. This constitutes the first original contribution of the paper. Along ... and CEDT cases). This constitutes the best trade-off in terms of, on the one hand, the ability to capture the spatial variations of the random field and, o...

Ngày tải lên: 21/06/2014, 17:20

... function gcd(·)meanscalcu- lating the greatest common division. This contradicts with the precondition. Proof of Theorem 2. We can use the similar process to prove that the lower bound of the dissemination ... energy consumption. From the basic rule of information theory, the total amount of information is proportional to the number of samples and the number of b...

Ngày tải lên: 22/06/2014, 19:20

... the computation overhead for each node includes the encryption and authentication of the local broadcast message, the verification and decryption of the received messages from neighbors, and the ... Wei, “Security considerations on node mobility in wireless sensor networks,” in Proceedings of the 4th International Conference on Computer Sciences and Convergence Info...

Ngày tải lên: 21/06/2014, 11:20

... based sensor network topologies. 3.1. Radio energy model We focus on radio energy consumption in wireless sensor nodes. Having different power consumption levels, a radio device has one of the following ... configuration through evaluating the amount of average broadcast traffic. The amount of broadcast traffic depends on what kind of data gathering and routing protoco...

Ngày tải lên: 21/06/2014, 23:20

... placed at the boundary of the environment). Finally, note that, as one moves the location of λ i from the center of the environment to the boundary along a straight line, the areas of the level ... makes the zone size smaller. Regarding average zone area, since the sum of the areas of the zones is equal to the area of the environment, we deduce Averag...

Ngày tải lên: 22/06/2014, 00:20

... exploration Neighborhood exploration covers two separate steps. The first one, which is optional depending on the configuration of the wireless sensor networks, is the setup of address infor- mation. ... for making one bi- nary. One static input pin belongs to the code templates for the generation of the wiring, the node profiles, and the con- figuration, another to...

Ngày tải lên: 22/06/2014, 22:20

... for making one bi- nary. One static input pin belongs to the code templates for the generation of the wiring, the node profiles, and the con- figuration, another to the source code of the modules ... shows the principal concept of reconfiguration. We distinguish the following actions. (a) Depending on the global goal, the robot drives to the position in the sen...

Ngày tải lên: 22/06/2014, 22:20

... respectively, the set of nodes and the set of valid radio links l(x, x  ). Under the hypothesis of switched links, l(x, x  ) only exists if both are in range one of each other. 1 The connectivity ... Corporation EURASIP Journal on Wireless Communications and Networking Volume 2007, Article ID 19196, 16 pages doi:10.1155/2007/19196 Research Article Impact of...

Ngày tải lên: 22/06/2014, 19:20

... focus on the local similarity of the Bayer color difference plane not only along the directional axis but also beside the axis within the local region. Since the edge directions of the pixels on ... the difference plane of the opposite case. From these examples, the strong connection of the global shift direction and the local edge direction is described by...

Ngày tải lên: 21/06/2014, 08:20

... 1.Thatis,ψ is a contraction, and the proof is complete. In the following theorem, which is the main result in this section, we establish the strong convergence of the sequence defined by 1.8. Theorem ... improve some of the conditions and results in the mentioned papers, especially those of Song and Xu 11. 2. Preliminaries Let S : {x ∈ X : x  1} be the unit spher...

Ngày tải lên: 21/06/2014, 11:20