Advanced Materials Research Vols. 756-759

Abstract: The studio has extraordinary meaning of the personnel training of the specialty. According to the actuality and application demand of colleges and universities, we plan to construct a virtual studio laboratory. The paper introduces the system functional components of virtual studio laboratory, elaborates the realization of technologies of virtual studio laboratory, analyses the virtual studio laboratorys application meaning in teaching in the end. Appling the virtual studio laboratory in teaching, we can acquire well teaching effect. The virtual studio laboratory has definite promotional value, can be used in the education and teaching of film and television producing extensively.

Abstract: purpose of research of software development is to attempt to develop lower cost , high reliability, and a variety of software to meet user needs. This paper introduce the advantages and disadvantages of various software development model from software engineering perspective.It proposed use of scientific principles and methods of engineering specifications to guide the development of the software , run and maintain , and trying to organize the work of software development , and then explore a new way to get rid of the software crisis.

Abstract: The electric power industry is the largest CO₂ emitting sector in the national economy. So optimize the power structure is an important part of energy conservation. This article selected the data of power supplydemand and the power structure in Hebei Province from 2004 to 2011 on the basis of the analysis of the power structure. It established a short-term prediction model based on gray theory, and made the power supply and demand situation and the power structure prediction of Hebei province in the next five years, and provides a reference for the scientific development of the power structure optimization of Hebei Province in the low-carbon context.

Abstract: In this paper, an model with impulsive effect is considered. The existence of the periodic virus-free solution is given and the basic reproductive number is defined. Using the Floquet theory and impulsive differential inequality, we obtain the local and global stability of the periodic virus-free solution if , and the virus in the computers will be eliminated. Finally numerical simulation validates the results and shows that the periodic virus-free solution is unstable and the virus will persist when .

Abstract: Microblogging has emerged as a new medium for communication and offers an explicit mechanism of facilitating information diffusion. In this work, we construct two indicators which are activity of users and historical attention. By introducing the factor of the spread ability of the microblogs, we propose a novel user influence ranking algorithm (User Influence Rank). Compared through experiments with traditional algorithm, the proposed algorithm is effective.

Abstract: The core of exam management system is how to generate test paper automatically. The existing algorithmic is difficult to simultaneously achieve the requirements with efficient, random, flexible and expansive performance. In this paper, we introduce the maximum flow algorithm of the upper and lower bounds in the graph theory, create a test paper generation model based on constraint conditions, and implement the test paper generation under complex constraints. In addition, to illustrate the success rate and efficiency, the system generated automatically test papers on proposition needs. In turn, it verifies the correctness and rationality of the model. The algorithm proposed in this paper will provide theoretical and technical support for other systems, and it further promotes the development of the exam management system.

Abstract: Toeplitz matrix arises in a remarkable variety of applications such as signal processing, time series analysis, image processing. Yule-Walker equation in generalized stationary prediction is linear algebraic equations that use Toeplitz matrix as coefficient matrix. Making better use of the structure of Toeplitz matrix, we present a recursive algorithm of linear algebraic equations from by using Toeplitz matrix as coefficient matrix , and also offer the proof of the recursive formula. The algorithm, making better use of the structure of Toeplitz matrices, effectively reduces calculation cost. For n-order Toeplitz coefficient matrix, the computational complexity of usual Gaussian elimination is about , while this algorithm is about , decreasing of one order of magnitude.

Abstract: To generate a model which can provides detailed data analysis supportive in aviation incident analysis, a human factor analysis model based on Bayesian network theory is established. This model is a Bayesian network which uses three layers nodes to represent causality between human factors and incidents. The specific impact degree of human factors on aviation incidents is represented by conditional probability parameters of the model. The model structure, constructed by combing hill-climbing search method with CH score function, coincides with the actual data. This model is useful in aviation incident analyses and deductions.

Abstract: The residents' consuming level of the various provinces in China is not balanced, so accurate analysis of the various provinces and cities in China's consumer spending and identifying the key factors that affect the level of consuming are beneficial for the promotion of the construction of the country's overall development. The paper used principal component analysis, established a comprehensive evaluation of the principal component model, and combined cluster analysis with the analysis of the differences in consumption of the different regions of China. Finally, the paper carried on a comprehensive evaluation of the 31 provinces and cities in the level of consumption and offered a proposal for the evaluation results.

Abstract: In this paper, the ideal of quasi-coincidence of a fuzzy point with a fuzzy set is generalized and the concept of an - fuzzy ideal (bi-ideal, quasi-ideal) of an ordered semigroup is introduced. The the notion of - fuzzy duo ordered semigroups is introduced and some characterization theorems are presented in terms of - fuzzy ideals.