Trusted Network Connect (TNC), whose goal is to improve network security from source, now has become hot topic in security domain. We proposed a new access model for the terminals without meeting the requirements in T...
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The stamping direction is important for the forming quality of automobile panels. To determine the reasonable direction of the panel, taking the stamping direction vector as design variable based on mesh data of autom...
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The stamping direction is important for the forming quality of automobile panels. To determine the reasonable direction of the panel, taking the stamping direction vector as design variable based on mesh data of automobile panels, an algorithm model was established based on the criteria such as avoidance of dead angle, minimization of drawing depth, and maximization of initial contact area. The corresponding program module was developed in Visual C++ using unit sperical mesh intersection algorithm to get the feasible stamping direction vector domain rapidly. The feasibility of the algorithm was proved by the creation of stamping directions of some practical parts and the relevant numerical simulation of stamping depth.
Applications such as online virtual fitting room for clothes demand massive computing powers in order to obtain real-time and high fidelity *** cluster provides the infrastructure and solution to solve large scale, co...
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Applications such as online virtual fitting room for clothes demand massive computing powers in order to obtain real-time and high fidelity *** cluster provides the infrastructure and solution to solve large scale, computation intensive and high throughput problems like fine-grained cloth simulation. In this paper, some key techniques for cluster computing based online virtual fitting room are discussed and a prototype system is implemented. The experiment results show that the proposed architecture can achieve real-time, high-fidelity cloth simulation and provide encouraging online virtual fitting experiences.
To improve the shift quality of vehicle with clutchto-clutch gear shifts, a nonlinear controller is designed for the clutch slip control during the shift inertia phase of an Automatic Transmission(AT). Backstepping te...
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To improve the shift quality of vehicle with clutchto-clutch gear shifts, a nonlinear controller is designed for the clutch slip control during the shift inertia phase of an Automatic Transmission(AT). Backstepping technique is used to deduce the control algorithm. Model uncertainties including steady state errors and unmodelled dynamics are also considered as additive disturbance inputs and the controller is designed such that the error dynamics is input-to-state stable(ISS). Lookup tables, which are widely used to represent complex nonlinear characteristics of engine systems, appear in their original form in the designed clutch slip controller. Finally, the designed controller is tested on an AMESim powertrain simulation model. Comparisons with an existing linear algorithm are given as well.
One kind of semantic Web service modeling and composition method based on description logic (DL) rule is introduced in this paper. We use DL rule to figure out the hyponymy relationship between concepts of domain onto...
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One kind of semantic Web service modeling and composition method based on description logic (DL) rule is introduced in this paper. We use DL rule to figure out the hyponymy relationship between concepts of domain ontology and model Web service functional semantic of ServiceProfile, and define service DL rule to describe semantic matching of atomic Web service. Furthermore, we propose DL rule chain to describe semantic Web service composition, and prove that its semantic is corresponding to a new DL rule. Moreover, we give DL rule chain finding algorithm and WSR matching algorithm to find the composition result. Finally, we generate a dataset to test two algorithms above and show perfect execution efficiency.
In this paper, we introduce two concepts of service semantic relation and semantic relation chain to figure out service composition relation and sequentially service composition. For parallel service composition, we p...
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In this paper, we introduce two concepts of service semantic relation and semantic relation chain to figure out service composition relation and sequentially service composition. For parallel service composition, we propose Web service community (WSC) model which corresponding to a Split+Join structure, So we introduce a kind of divide and conquer method to convert parallel service composition into sequentially service composition based on WSC chains and which can solve sequential and parallel service composition problems in an agreement way. Finally, a parallel composition example illustrations the execution process of our method.
Query interface is used to formulate queries to receive needed data from web databases in deep web. In order to access domain-specific databases, the most important step is to construct an integration interface that a...
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ISBN:
(纸本)9781424452446
Query interface is used to formulate queries to receive needed data from web databases in deep web. In order to access domain-specific databases, the most important step is to construct an integration interface that allows uniform access to disparate relevant sources. Therefore, this paper proposes a novel method of integrating query interfaces based on ontology in deep web. Firstly, make full use of the complex relationships which are provided by ontology, and find the semantic relationships between attributes. Then, record the matching relationships and matching frequencies into a mapping table to reserve the structure and the order of attributes. Lastly, extract these concepts from ontology as integration interface attributes which are matched with corresponding attribute labels from local interfaces, and descend order in accordance with the matching frequencies to get an integration interface. Experiment result shows that this method has dramatically improved the matching precision of query interfaces.
When diagnosing dynamic system represented as discrete-event systems, it needs to find what happened to the systems from observations. The behavior of system could be represented by automaton model. The diagnostic tas...
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When diagnosing dynamic system represented as discrete-event systems, it needs to find what happened to the systems from observations. The behavior of system could be represented by automaton model. The diagnostic task consists in determining the models compatible with the observations, but the global computation which is needed in synchronization costs exponential time. In this paper we propose a new method to simplify the automaton by isomorphic determining. The cost of computation will be significantly cut down by merging the automatons with the same structure, and the time-complexity of the diagnosis process could be reduced by the method.
Automatic deep Web query results extraction is a key step of deep Web query results processing. Extracting the query results correctly is the precondition and guarantee of realizing semantic annotation and data integr...
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Automatic deep Web query results extraction is a key step of deep Web query results processing. Extracting the query results correctly is the precondition and guarantee of realizing semantic annotation and data integration. In this paper, a simple method for extracting deep Web query results automatically based on tag trees is proposed according to the features of deep Web query results page. The method first builds a tag tree of the given result page. Then finds minimal data regions in the tag tree from top to down, and extracts data records included by them. The experiment has shown that the method is effective.
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