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Collision detection algorithm based on bounding box is an important algorithm of collision detection.The principle and effectiveness of axis-aligned bounding boxes(AABB)method, oriented bounding box method(OBB), discrete orientation polytopes (k-DOP)method were discussed in detail. The results of analysis prove that the simpleness of bounding box is in contradiction with the compactness of wrapped...
This paper introduces the design of an automobile driving simulation system based on single chip computer. It's control device, with 8 bit single chip computer STC89LE516AD as its core, assisted by data acquisition circuit, data storage circuit, and data communication circuit, performs the function of collection, storage and communication of the driving information. Furthermore, with the help of visual...
The rapid development of Networks and distributed computing technologies enables inter process communication mechanism more and more important, semaphore has many advantages in the distributed inter-process communication mechanism. This article is based on the daemon and provides implements of semaphore mechanism in the distributed system inter process communication, then associates it with the traditional...
Efficient concept lattice generation algorithm is a major problem for the applied research of formal concept analysis. Based on the basic property of concept, this paper put forwards and proves a theorem about the relationship of concepts, and then proposes an incremental concept lattice algorithm based on basic concepts. An example shows that the algorithm is feasible and effective.
This paper proposed an unconstrainted optimization method based on BP neural network, and take Unipolar Sigmoid function as the transfer function,and take maximize network output as example,derived and given the partial derivatives of the BP neural network's output to input.On this basis, give a general mathematical expression that based on the BP neural network unconstrainted optimization issues,and...
In China, power supply company has solved a lot of problems of rural power management by computer. Because informatization is not enough, grassroots power supply companies have different situations and some promoting softwares could not satisfy grassroots units' individual needs. At present, there are still some problems of rural power management in city county-level power supply company, such as...
Data mining technique is an effective tool used to obtain desired knowledge from massive data. Neural network is a new method in the application of data mining. Although it may have shortcomings of complex structure, long training time and uneasily understandable representation of results, neural network has high accuracy which is superior to other methods and this makes it more available in data...
Thanks to the constant improvement of technology, modern information technology has gotten rapid development as well as enterprise Informatization, management Informatization and Informatization, and the three can't be separated from each other, and each one of the three interacting with and promoting the others; Thus if we want better future and faster development speed of the three, we should pay...
In this paper, taking mobile robot as the research object, the embedded control system is designed adopting PC/104 as host controller, which achieves the link among the expand boards, power module, motor driving module, perception modules, the HCI interface modules and so on; Wireless communication technology in mobile robots is investigated deeply, and then wireless remote control and wireless serial...
Internet education has more and more percent in tradition education because the network technology develops faster in this 21 century. In order to take full advantage of the network resource in universities, and accelerate the college education reform, we develop Campus Network Based Teaching Resource Management System. This system applies the B/S architecture based JSP, The JSP language which is...
-Product maturity model is capable to plan and control concurrent product development process, which the accurately evaluation of product maturity is particularly important. For this purpose, product maturity model and the key factor architecture of product maturity was constructed from the perspective of the integrity of product information model. To determine the weight of the key factors, the calculation...
Tailor rolled blank(TRB) is an new techniques of metal sheets, its manufacturing technology is involved in the process of multi-fields and multi-subjects synergism. For shorted exploiting cycle, reducing designing cost and improving the shape quality, the design method, namely rapid virtual design, was put forward for modeling of TRB rolled processes. Its flow chart, design system and structure were...
It was discovered that quaternion can be used in surgery navigation system (SNS), as an alternative and compact way to represent rotations. Coordinates conversion must be included when localizing in different coordinate. The application of quaternion in SNS coordinates conversion and the application of space registration in SNS are theoretically introduced in detail. The result of simulation shows...
Concept lattice is a form of conceptual classification of the object or concept hierarchy based on the crisp relation between object set and attribute set. It has been used with a high intensity to knowledge reduction. Through the in-depth study of concept lattice, this paper presents the definition and natures of attribute importance in concept lattice, and accordingly illuminates an attribute reduction...
Under the target hypothesis of Golden Rule, the distributed supply chain which consists of one manufacturer and two retailers is considered. The bi-level programming is applied to construct a distributed supply chain coordination model in order to analyze the coordination mechanism, and the relation between the collective Pareto optima and the degree of mutual interest among enterprises on the supply...
It is confirmed that the Chinese Train Control System (CTCS) level 3 system is adopted in newly-built railways where the train speed is expected to exceed 300 kilometers per hour. In order to construct the simulation and testing platform of the CTCS level 3 system, this paper focuses on the research of functional prototype of Radio Block Centre (RBC), including the following three key points. First,...
The grain size is an important quality index of granular materials. The accurate measurement of it has a guiding significance for technical performances and application of subsequent processing. Currently most of particle detection are done by manual operation such as screening method, which causes many problems as time-consuming measurement and lengthy testing steps. The particle size detection technology...
According to the Power Grid economic indicators, Power Grid investment benefit evaluation system is designed and implemented base on the EJB technology. After introducing the EJB technology, the function design of the system is described. The structural design of the system follows the MVC model. How to use the EJB technology to implement the business logic layer is also discussed.
In recent years, with digital maps and geographic information systems technology development and application of electronic maps came into being. With further development, many geographic information system applications will also be in the form of electronic map. Currently, the existing electronic map systems have achieved some results on research and application, but there are some issues leads to...
To promote the application of web-based expert system, the significance of the construction of the web-based expert system was introduced, the principles and methods were explained, and the latent problem was discussed, the tendency was also analyzed.
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