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In the opportunistic networks, nodes carry and store the data and forward it until they encounter each other. How to choose an appropriate opportunity to forward data is pivotal for nodes' routing in this type of networks. Since nodes currently will keep a regular movement state in the scene of this paper discussed, forecasting a node's moving track in the near future would be very helpful. Through...
There is a strong need for acquisition of high quality volume data sets, with the vision of visualizing organs, engines or other materials for variant fields. Visualized computer model provides interactive investigation and improves understanding of details of substances. Since the quality of volume data which is acquired by CT and MRI devices is impacted by noisy, partial effect and bias seriously,...
An ordered multi-signature scheme allows multiple users to sign the same message sequentially to generate a constant-size digital signature, which convinces the verifiers of not only the signers who have signed the message but also the order in which they signed. In some applications of wired/wireless networks, ordered multi-signature is always used to construct sequential authentication schemes....
We investigate the radicals of Chinese character based on complex network theory. In this paper, in the study of Chinese character network, scale-free effect and hierarchical structure features are found in this complex system. In addition, we study the community structure in Chinese character network, and two interesting results have been obtained: First, the relationship between the node number...
In order to preserve the local structure of the input data, many dimensionality reduction algorithms are involved in the definition of certain locality in the feature space. Thus local patch selection will directly affect the performance of these algorithms. In this paper, we propose a new method of local patch selection for dimensionality reduction. Specially, we incorporate our method into locality-preserving...
Frequent itemsets mining is often used to find medication law from dataset of Chinese herb prescriptions. Threshold of support count is difficult to set for traditional algorithm of frequent itemsets mining. In the meantime, the number of frequent itemsets is always so big that the result is hard to understand. Some algorithms were proposed to find significant and redundant-aware itemsets. However,...
Cloud services are fundamentally supported by Data Center Networks (DCNs). With the fast growth of cloud services, the scale of DCNs increases rapidly, leading to a big concern on system scalability due to multiple constraints. Based on optical switching and transmission, this paper proposes a scalable DCN architecture with distributed placement of optical switches and server racks at different nodes...
Due to standard label propagation algorithm does not use the correct posterior probability of each iteration, and the propagation information of labeled data and unlabeled data are not distinguished during the label propagation process, this paper proposes a multi-level label propagation algorithm Based on data reconstruction. It adds the data which is correctly labeled for each iteration into the...
The heterogeneity and mobility inherent in a large-scale wireless sensor network makes it difficult to develop different applications. The difficulty primarily arises from weak and intermittent connections, dynamic reconfiguration, and limited power availability. The challenge in building a distributed service adaptive to environmental changes lies in the degree of data transmission and the adaptation...
The primitive of proxy signatures allows the original signer to delegate proxy signers to sign on messages on behalf of the original signer. It has found numerous applications in distributed computing scenarios where delegation of signing rights is common. Certificate less public key cryptography eliminates the complicated certificates in traditional public key cryptosystems without suffering from...
It has been more than 10 years since China's entry in the WTO. WTO accession has effectively stimulated the innovation and technology upgrading of China by the enlargement of trade, foreign investment and other effects. Reviewing the linkages between the enlargement of trade (investment) and innovation, we come to the conclusion that the status of China's big export country was the result of innovation,...
Consider the parametric excitation, studied the characteristics of fifth nonlinear duffing chaotic system. By applying geometric theory of dynamical systems, bifurcation theory and infinitesimal calculus, obtain the homoclinic orbit of fifth duffing equation. Using Melnikov method determines the initial chaotic condition of system and perturbation equation. By means of numerical calculation and computer...
This study attempts to analyze the types of Innovative Companies in Chinese sporting goods manufacturing industry through quantitative research methods. After analyzing the number and structure of patent applications of Chinese sporting goods manufacturing enterprises since 1980s, the study make classification of Chinese sporting goods manufacturing companies through Centroid clustering method. The...
A mission completion success probability model under given spares support for series and parallel system is established aiming at mission requirement of uninterrupted work. The numerical algorithm for the model is given based on Monte Carlo technique. The model can solve the problem of mission completion success probability calculation under the complex instance such as the component of system with...
Based on the high level swimming teams of Tongji University This essay introduces a specific training information system used in swimming which was built by the skill of electrommunication, network communication and database technology. In this system, using the ZigBee transmission technology, a wireless real-time timer technique was adopted and communication master station was used. As a result,...
An improved genetic algorithm (Fuzzy Adaptive Simulated Annealing Genetic Algorithm with Gradient direction, GFASAGA) will be proposed in this paper, whose global superlinear convergence properties was analyzed by means by Markov chain etc. Certain fuzzy aeroengine compressor guide vane controller parameters of the regulator were optimized by GFASAGA, standard genetic algorithm (SGA) and customized...
This paper summarizes the basis structure and fundamental theory of doubly salient electro-magnetic motor (DSEM). A 12/8-pole prototype was built for exemplification. Advanced angle control mode (AACM) was adopted at medium and high speeds to increase the motor output torque. Moreover, finite element analysis of this motor is carried out to investigate the armature current and torque ripple at different...
Aimed at the practical requirements of advice for current students, combined with artificial intelligence expert system technology and college students career-counseling work, we provided a web-based career counseling expert system for college students. The system consists of the basic intelligence career counseling, career counseling solutions management, auxiliary decision-making, information management,...
For understanding the factors of athletes selected targets and environmental with re-employment. The researching concluded literature review, questionnaire survey, mathematical statistics, etc. It's found that the target of ideal career in retired heavy competitive athletes, as business ranked first and the second is to engage in coaching or teaching; the first important environment of personal preferences...
The preparation of employment including the re-employment target selection, psychological preparation, knowledge and skills preparation. For understanding the heavy competitive athletes to prepare the re-employment status of professional athletes. The researching concluded a literature review, questionnaire survey, mathematical statistics, etc. It's found that heavy Competitive athletics did' t have...
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