Applied Mechanics and Materials Vols. 130-134

Abstract: Based on principles of humanization design, through the Human-Machine interface, Man-machine engineering, mechanical esthetics aspects of Coal Mine Machinery for “person-machine-environment” coordinate design research. This article make " humanization" design idea got fully manifests, change the former design of coal mine machinery simply focusing on product function, which pay more attention to the core content of product design, lay emphasis on the user comfort requirements, ascending users simple and efficient operation mode, satisfy user physiological and psychological needs. And thereby give the humanistic concern, make the products of coal mine machinery to be more comfortable and pleasant, what’s more, improve the added value of the heavy machinery products and showed the development direction of the modern coal mine machinery equipment.

Abstract: A Novel dictionaries preconditioning algorithm for compressive sensing is proposed in this paper. This algorithm uses alternating projection method to construct sensing and measurement dictionaries with low mutual and cumulative cross coherence. The coherence property of the constructed dictionaries is superior to those constructed by Schnass’ method and by Dictionaries Construction algorithm. The complexity and computation amount is lower than Dictionaries Construction algorithm. The constructed dictionaries improve the performance of OMP and SP algorithms.

Abstract: In this paper, we study the minimality properties of random exponential systems in , where is a weighted Banach space of complex continuous functions of on with vanishing at infinity, in the uniform norm with respect to the weight . We prove that, if is incomplete in , then is minimal and each function in can be extended to an entire function respresented by a Dirichlet series.

Abstract: The recent application of tube hydroforming in the automotive industry demands finite element analysis, since it is rapidly being used as an effective tool for the evaluation of the design of hydroforming processes. In this paper the formability of rear sub-frame in car body with tube hydroforming is studied. The comparison of various feeding and pressure on the hydroforming process is evaluated utilizing Finite Element Method to obtain detailed information on the deformation behaviors in hydroforming of rear sub-frame. It has been shown that optical leading paths such as axial feeding and internal pressure can quantify the circumferential thickness distribution in the rear sub-frame tube periphery.

Abstract: How to deal with the model is important in analyzing structure system with finite element method, because the rationality of model has direct relationship with veracity of simulation result. In this paper some simplify modeling methods are expatiated. And an approach is supposed that combine simplifying complex model and rigid-treating sub-component which make model more close to reality. In final, an instance of multi-type-element system structure is computed to prove the correctness of the method.

Abstract: Multidimensional data modeling is the foundation of OLAP. This paper presents methods of multidimensional data modeling and applies it to the SMS(short messages) communication service. In order to analyze SMS data, a OLAP model must be designed. After the data from SMS communication are divided into fact data and dimension data in accordance with needs for SMS data analysis, the fact table and dimension tables are created. The multidimensional SMS data analysis model is built on the tables and then implemented by SQL server.

Abstract: The tactical situation assessment is the basis of Mission Planning, Emergency Action Planning, Firepower Assignment and Attack Ordering in PAAIS (Pilot Assistant Artificial Intelligent System). To take into account the current BVR (Beyond-Visual-Range) air combat threat assessment, we proposed a method which used the TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) arithmetic to evaluate the air target threat. Compared to the other threat methods, this arithmetic has the characteristic of simple, computation fast, update expediently and so on. The simulation result indicated that it can respond quickly to the detected targets and satisfy the requirement of situation assessment in PAAIS.

Abstract: This text advance the method of automatism capture the engineering parameter in figure using computer, thread conversion and account the coordinate, capture the engineering parameter in figure, can frank capture the engineering parameter in curve from figure, especially for experience figure, capture the engineering parameter is achieve nicety and effective.

Abstract: LOD (detail of level) technology is crucial technologies in virtual reality system, it’s more important especially in web based 3D model rendering. For the LOD technology reduces the complexity of computation which makes the possibility of real time rendering. This paper will discuss the minimum optimal mesh numbers which a model should be under different distance of viewpoint.

Abstract: A mechanism based on a Grashof crank-link mechanism and a hybrid-drive six-linkage mechanism is designed to fit its ankle and sole trajectories and imitate the function of the basilisk lizard running on water. The linkage mechanism kinematics theory and the geometric identity condition are used to analyze the mechanism kinematics, and an instance simulation is carried out to prove that the mechanism can satisfy the kinematics requirements of water-running.