Advanced Materials Research Vols. 219-220

Abstract: Bad cutting state of sugar cane is a most situation in sugar cane cutting process, which seriously affects the cutting performance of sugarcane harvester and its promotion. According to the fourth strength theory, through finite element analysis software ANSYS, the mechanical simulation analysis on bad cutting state of cane was done. And through regression analysis on simulation results by software SPSS, the criterion of bad cutting state of sugarcane was obtained.

Abstract: This paper presents an efficient and accurate direct interpolation algorithm for saddle curve formed by intersection of two tubes, an important manufacturing problem in automated welding/cutting field. The algorithm is able to directly interpolate the saddle curve with non-Cartesian configuration. Simulation of the saddle curve interpolation algorithm has been carried out on the Matlab platform. The results demonstrate that interpolation error is well within the accuracy requirements of typical machining. It also shows that the trajectory control program based on the algorithm can work with high efficiency.

Abstract: Considering that Hilbert-Huang Transformation (HHT) can be used to analyze instantaneous frequency in structural dynamic analysis, this paper proposes the concept of HHT marginal spectrum based time frequency response function. It also defines “central frequency”, which is used to reflect the change of structural dynamic properties during earthquakes, and discloses time-varying development of seismic structural damage. Using a three-story shear frame model, which is subjected to the El Centro seismic wave, the HHT time frequency response analysis of its acceleration response has been made, results show that the adoption of central frequency can successfully indicate the damage inception instant and its development.

Abstract: Energy consumption induced by industry sector is the main source of carbon emission. So it is important to the policy making that research on the low-carbon industrial development, which is aiming to establish an industry system with low-carbon character. There are four restrictive factors on low-carbon industrial development in Tianjin Binhai New Area of China: the rather large scale of the secondary industry, the heavy industrial structure which strongly caused the increasing energy consumption, the high-carbon energy structure of industrial sector, and the lower industrial energy efficiency which has certain gap compared with other regions. Several countermeasures are proposed to reduce carbon emission induced by industrial sector, such as improving energy efficiency, optimizing energy structure, establishing multiple-access financing mechanism to encourage R&D on low-carbon technology, enhancing the development of low carbon industry, participating in the international cooperation actively, and making strategic plan of low-carbon industrial development.

Abstract: Nowadays, most of the Chinese college students acquire more about target language culture than their native culture. Judging from the present distinctive sets of college English textbooks, there exists one common problem: Chinese culture is seldom involved in the textbooks. The textbook is viewed as the very crucial means to cultivate learners’ intercultural communicative competence(ICC). The overwhelming majority of textbook editors attach more importance to the target language culture, neglecting Chinese culture , which results in students’ being poor in ICC. As a successful communicator, proficiency in both the target language and the native language are required of college students.Based on the findings of a survey and a questionnaire, the author proposes some suggestions on textbook reforms with the purpose of promoting students’ ICC.

Abstract: To improve the generalization performance for ensemble learning, a subgraph based selective classifier ensemble algorithm is presented. Firstly, a set of classifiers are generated by bootstrap sampling technique and support vector machine learning algorithm. And a complete undirected graph is constructed whose vertex is classifier and weight of edge between a pair of classifiers is diversity values. Secondly, by searching technique to find an edge with minimum weight and to calculate similarity values about two vertexes which is related to the edge, vertex with smaller similarity value is removed. According to this method, a subgraph is obtained. Finally, we choose vertexes of subgraph, i.e. classifiers, as ensemble members. Experiments show that presented method outperforms the traditional ensemble learning methods in classification accuracy.

Abstract: The finite impulse response (FIR) filters in the space radiation environment probably face the single event upset (SEU), making unexpected results. To avoid that situation, the traditional triple module redundancy (TMR) technology is usually applied. At the same time, however, it brings high cost of area and power. For this reason, an improved TMR (ITMR) structure for FIR filters is proposed in this paper. Simulation shows that the design can achieve the same performance with much less resources. Based on traditional technique TMR, the design reports an improved TMR (ITMR) structure by simplify the two redundancy modules, the advantage that it has the same performance but costs less resources can be reflect by the simulation and synthesis clearly.

Abstract: It’s important to improve the success rate and profit margins that establish a reasonable performance evaluation and weighting coefficient, and the implementation of performance evaluation. In connection with characteristic of software project performance evaluation system features, use balanced score card and analytic hierarchy process studying. First, establishment of performance evaluation indicators system, include indicators system principles of the elaboration, give the basic framework of the balanced score card, on financial indicators, customer indicators, internal business indicators, analysis of learning and growth indicators, base on the quality of software projects, through the table list the evaluation index system; second, study identifies indicators of performance evaluation method of weight, include the structure matrix, single-level sorting and consistency check, the level and consistency check of the total order of three basic steps, each step of calculation is given by mathematical formula. The results show that the methods used in scientific application, for software project management and performance assessment indicators researchers, is an important reference.

Abstract: Proposed a method for System Fuzzy Control and Fault Diagnosis based on TRIZ theory. We got the method through the analysis of TRIZ matrix and 40 invention principles.In the proposed method, the different operation time parameters were compared and the Fuzzy Control and Fault Diagnosis could be realized by the change of time parameters. PLC program stored and compared the time parameters, and the program executed fuzzy control and fault diagnosis operation based on the engineering experience. Other parameters, such as flow, pressure, could be used too. The method got good response in engineering field in practice.