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By now, XML has reached a wide acceptance as a data exchange format in the Internet, and to make the Semantic Web a reality, such data need to be interpreted with respect to ontologies. In order to provide it, a semantic mapping from the XML format data to the ontology is necessary so that XML format data can be converted to OWL. To accomplish this, we offer a mapping formalism to convert the XML...
Morphing concepts for missiles have been a topic of current research interest in aerospace engineering. For the morphing wings technology of missile, a kind of autopilot design method is proposed by H∞ control theory. In order to have the better flight performance in the different regimes, the missile can automatically change the wings area symmetrically. The nonlinear dynamic model is established,...
Currently, the internet becomes an important information infrastructure, and internet security problem have become strategic issues related to the country safety. Therefore, it is important theoretical and practical value to make network security risk assessment theory and key technology research. As the internet has the characteristic of complex nonlinear systems, we lead nonlinear system analysis...
With rapid development of information technology, the information system has been widely applying in government, national defense and economic sphere. The security problem of information system is more and more related to the economic development. Therefore, evaluating risk effectively, selecting effective defense measures and defending information threats actively are the key points of resolving...
This paper analyzes and compares four different mechanisms for providing QoS in IEEE 802.11 WLAN. And it evaluates the IEEE 802.11 mode for service differentiation (PCF), Distributed Fair Scheduling, Black burst, and a scheme proposed by Deng et al. using the ns-2 simulator. The evaluation covers medium utilization, access delay, and the ability to support a large number of high priority mobile stations.
In order to solve the demand for sharing large-scale data such as high-resolution remote sensing images and the need for service sharing, Web Service technology will be applied to the major animal epidemic disease control system for the sake of putting cyberspace information sharing and Cross-Platform Applications in practice. The application has shown that it's feasible to develop the Major Animal...
A self tuning PID control strategy based on RBF network is proposed, to the nonlinear and time-varition industrial process with uncertainties. RBF network is built to construct processing model through on-line identification and the Jacobian information of the system controller is obtained. By using a new learning algorithm which is generated by RLS algorithm and gradient method and combining this...
Proxy blind signature technology integrates the properties of both the blind signature and proxy signature; it can be adopted in applications such as e-cash or e-commerce, etc. In this paper, cryptanalysis of two blind proxy blind signature schemes is made, which show the first scheme doesn't satisfy the property of unlinkability and the second suffers from a kind of forgery attack. And to overcome...
In this paper, the TDMA dynamic allocation of protocol - slot ALOHA algorithm is the basic concept, the whole design use the GPS to provide accurate real-time clock for the whole system, combine wireless communication module to build a wireless network, and apply to UAVs communications. The whole system achieves the various nodes (UAV) real-time communication between a low collision rate and high...
Multi-core architectures, which have multiple processing units on a single chip, are widely viewed as a way to achieve higher processor performance. Well scheduling of running threads on these processors will result in achieving higher performance. Modern multi-core systems are designed to allow clusters of cores to share various hardware structures, such as last-level caches, memory controllers,...
This paper considers the current domestic and international air-conditioning control and temperature characteristics of the respective physical parameters of large inertia and time delay of the characteristics of central air conditioning system on thermal engineering modeling, and the establishment of air-conditioned room and a temperature control valve circuit mathematical model. The Matlab simulation...
This paper introduces a process to select different test circuit using FPGA controlled pull and disconnection of relay matrix, so that multi-port equipment testing could be achieved. This design, to some extent, has a simplified circuit complexity and an increased, comparing to the test equipment previously used.
The traditional Pu'er tea fermentation is uses the man-power to moisten naturally in the workshop piles the fermentation, this fermentation way cannot guarantee that in the Pu'er tea fermentative process the humidity uniformity, produces the workshop and the Fermentation plant to the Pu'er tea carries on the design and the research, the microorganism technology, the machine-finishing technology and...
This paper investigates the Bit Error Probability (BEP) performance of a deterministic Gaussian uncorrelated scattering (DGUS) fading channel simulator. A novel and tractable approximation expression is derived, which is the BEP of QPSK over DGUS fading channel. Simulation results for the BEP are presented, by using a typical stochastic procedure Monte Carlo method (MCM) for the computation of the...
According to the model of distribution center location, this paper establishes a SA-PSO algorithm, which combines the particle swarm optimization algorithm and simulated annealing. Using a mixed binary and floating-point coding method to avoid increasing scale complexity, the algorithm improves particle swarm optimization algorithm which is very easy to get in trouble with local extremum, also it...
As distributed heterogeneous database multiple different physical locations, so will inevitably lead to a heterogeneous web server access to the database server response time difference, so in a distributed heterogeneous database access must be considered the database response time. This design technique based on hibernate database middleware, the middleware on the basis of the shortest waiting time...
LORA plays an important role in the supportability analysis of vessel equipment. There are much less LORA models dealing with few data, so, an optimization model based on LINGO is offered to solve the 3I3R vessel equipment, which is solved by programming. Finally, the model of LORA is practical and effective validated by a case.
In the perspective of host country, the impact of location factors for Chinese OFDI choice is examined in this paper. Based on theories of FDI location choice, combining with the features of OFDI of emerging economies represented by China, 9 variables are chose, 6 models are built, and 4 hypotheses are proposed, then the factors that affect Chinese OFDI location choice is verified through the regression...
Sine fitting is a fundamental task in many test and measurement systems. Total Least Squares (TLS) is an extension of the usual least squares method: it allows dealing also with uncertainties on the sensitivity matrix. A sine fitting algorithm based on TLS are employed to filter the sampled sequences of sine signals, eliminating ill effects on the measurement accuracy caused by noises (including the...
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