Advanced Materials Research Vols. 605-607

Abstract: When the AUV is executing detection, reconnaissance and other job tasks, AUV will moving in the near-seabed. And the flow field due to the seabed boundary effects become extraordinarily complex when the AUV moving in the near-seabed. In this paper, we will carry out some research about hydrodynamics simulation and analysis when the AUV is moving in the near-seabed.The model of flow field when AUV moving in the near-seabed was introduced and the dividing grid process was presented. At last the AUV’s hydrodynamics were simulated.

Abstract: The paper describes numerical base of user defined component model (UDC) for real time digital simulator (RTDS), gives applied method of UDC technique combined with user defined steps of assembling shunt capacitor (ASC), compares transient simulating results of ASC UDC with models from RTDS library, and demonstrates UDC possess higher simulating efficiency and simulating quality is not decreased.

Abstract: Knowledge reuse is of great significance for enterprises which rely mainly on new product development or design. For reusing knowledge, knowledge component is a feasible and efficient method. However, the implementation of knowledge component is still a new field to be researched. In this paper, a B/S-based multi-server framework to support knowledge component implementation was proposed. In the framework, a B/S-based knowledge component operating structure was introduced to make it easier for the product designers or developers to use the knowledge component. In order to reduce the computing time and alleviate the workload of the server-side, a multi-server mode was designed to separate the knowledge component operating process into three tiers (data tier, logic tier and computing tier). To improve the utilization of the limited computational resource, a real-time scheduling scheme was proposed to allocate the application software service to dynamic requests. Testing results proves that this framework is feasible and can help the designers reuse the existing knowledge rapidly. This framework will be significantly helpful to those enterprises interested in unlocking the potential of design knowledge reuse.

Abstract: This paper takes the Section 201 of shield construction engineering in Dalian Metro Line 2 as an example to analyze the deformation law of surrounding soil and the tunnel lining structure stress during shield tunnel construction. The shield tunnel construction is simulated dynamically by ADINA and the shield tunnel structure model of the concrete lining is established. This model is a three-dimension nonlinear finite element calculation model concerned with the grouting soil and original state soil. Taking the soil lithology in the upper layer and interact influences, we analyzed the dynamic process of shield construction, soil grouting and lining supporting and the stress distribution in difference reinforced concrete supporting segments and the ground settlement characteristics. Through numerical analysis method to study the deformation law of soil surrounding tunnel and the stress in tunnel lining, we get the results to compare with the results of Peck formula under the same condition. After generating the conclusions, we can provide several suggestions for shield tunneling construction, lining segment design and control of the ground surface settlement during the construction.

Abstract: Traditional collaborative filtering algorithms are facing severe challenges of sparse user rating and real-time recommendation. To solve the problems, the category structure of merchandise is analyzed deeply and a collaborative filtering recommendation algorithm based on item category is proposed. A smooth filling technique is used for rating matrix with user preferences and all users rating on the item to solve the sparse problem. A user has different interests on different category. For every item, the nearest neighbors are searched within the category of the item. Not only is the search space of the users’ neighbors reduced greatly, but also search speed and accuracy are promoted. The experimental results show that the method can efficiently improve the recommendation scalability and accuracy of the recommender system.

Abstract: Head and eye movement is eye movement response to head movements ,the eyes are the signals generated by the vestibular system is movement.The vestibular system is important to feel the organs and tissues of the body movement,Can be said that the vestibular system response to head movement, eye movement associated with the vestibule.We can use eye movements comparing with normal eye movements to detect whether the dizziness,in this process the modeling of the vestibular system is very important.Paper summarizes the response of head and eye movement system, vestibular system in the head and eye movement systems vestibular system exercise and Research at home and abroad, raised modeling method of the head and eye movement system when turn the head.

Abstract: Due to present situation of equipment management in power plant, a development platform for equipment management application which is to achieve hot-plugging module has been presented. The functions of business framework platform and technology of hot-plugging module have also been introduced. Some base functions of business framework platform have been elaborated, such as design of base class, module management function, and menu authority management etc. How to plan module file hierarchy, plan function file hierarchy, design business page, release business module, and install or uninstall business module in the process of business development have been illustrated.

Abstract: The article puts forward an improved PSO algorithm based on the quantum behavior——CMQPSO algorithm to improve premature convergence problem in particle swarm algorithm. The new algorithm first adopts Tent mapping initialization of particle swarm, searches each particle chaos, and strengthens the diversity of searching. Secondly, a method of effective judgment of early stagnation is embedded in the algorithm. Once the early maturity is retrieved, the algorithm mutates particles to jump out of the local optimum particle according to the structure mutation so as to reduce invalid iteration. The calculation of classical function test shows that the improved algorithm is superior to classical PSO algorithm and quantum-behaved PSO algorithm.

Abstract: Currently most c language web classrooms lack proper management system to help learners customize their learning progress. This paper introduces the design and development of an ASP-based learning log management system, which will provide learners with personalized learning in the c language web classroom.

Abstract: A custom service combination based on Business Process Execution Language was put forward. It mainly studied one-off recipient and keeping the business logic order unchanged. It was proposed a solution that made the serial workflow realize the local parallelism from three aspects such as message dependency, a directed acyclic graph to workflow, and the implicit message dependency. The algorithm of implementation was also discussed. A custom service combination application of ‘stocking house transactions’ and ‘stocking house mortgage’ showed the feasibility and validity of this algorithm. The system generates the BPEL by analyzing various business stakeholders’ Web Service Description Language interface thereby determining the dependence of each business order, together with maintaining the existing business logic. The BPEL enhances the local parallel processing, and makes the overall processing time reduced.