Advanced Materials Research Vols. 756-759

Abstract: Case theory is a vital means for the information processing of the natural language. Case-assignment depends not only on the tensed INFL, Vt and Prep, but also on the Case-assigning host, which refers to the elements that helps the argument successfully get the Case to satisfy the Case Filter. The Case-assigning host does exist objectively and possesses the cross-linguistic features. ba, jiang, and the expletive, light verb, empty preposition, and empty verb etc are all Case-assigning hosts, which are of importance in that they, as the faithful defensor or the patron saint of the nominal phrases, will come to help when needed and they can make the sentences in danger become safe and acceptable.

Abstract: This work studies on feature extraction for classification of proteomic profile. We evaluated four methods, including principal component analysis (PCA), independent component analysis (ICA), locally linear embedding (LLE) and weighted maximum margin criterion (WMMC). PCA, ICA and LLE extract features based on traditional low-dimension map technique. Comparatively, WMMC extracts features according to classification goal. To study classification performance of PCA, ICA, LLE and WMMC in detail, we used two well known classification methods, support vector machine (SVM) and Fisher discriminant analysis (FDA), to classify profiles. The results show WMMC having relatively good performance due to its prediction accuracy, sensitivity and specificity for diagnosis; it can correctly identify features with high discrimination ability from high-dimensional proteomic profile. When feature set size was reduced less than 10, PCA, ICA and LLE lose a lot of classification information, and the prediction accuracies are less than 90%. However, WMMC can extract most classification information. Its prediction accuracies, sensitivities and specificities are more than 95%. Obviously, WMMC is more suitable to proteomic profile classification. For classifier, FDA is sensible to feature extraction.

Abstract: Health assessment is one of the key technology in the aircraft operating system. Aiming at the characteristic of aircraft structure, the aircraft fault prediction method based on data mining is presented in this paper. The concept of health assessment is introduced first, the wavelet neural network provide the mathematical model reflecting aircraft health state. The experiment results show that the health prediction applying wavelet neural network works well with high fidelity and real time. Focusing at a typical heavy-duty gas turbine, the critical information collected by the sensor is applied as the network input, then the wavelet neural network is constructed, the quick training and learning speed is proved. The results indicate proposed approach is promising for reliable diagnostics of aircraft.

Abstract: The simulated PM-spectrum fractal sea surfaces and the 3-D near-field distributed model of horn antenna are built, the near-field formulas of KA method are deduced. The near-field scattering coefficient and the Doppler echo signal of rough sea surfaces are calculated, the agreement with measured data proved the correctness and validity of the near-field scattering model.

Abstract: Three-dimensional finite element analysis of harmonic electromagnetic field in a large and complex structure 15-phase induction machine has been completed. Accurate 3D finite element machine model is established. The current density of stator and rotor and the entire vector flux density distribution are given, then been analyzed and explained. 3D air gap radial flux density is obtained and has been made harmonic analysis. We can get more accurate electromagnetic field distribution and performance parameters through 3D finite element calculation of electromagnetic field. This method can give theoretical basis for the multiphase machine development of new structure and can play reference in terms of structural optimization design.

Abstract: Considering the characteristic of Once-Through steam generator, the simplified dynamic model with lumped parameters moving boundary is used to describe two-phase flow feedback system in this paper. The feedback system and transfer-function for instability analysis are derived from the model. The instability analysis of the system is based on the frequency-domain analysis method. The Matlab software and its simulink tools are used to analyze the instability of the system. Then the stability boundary under the effect of some major factors is obtained. The results of stability boundary are compared to the concerned experiments by frequency-domain method.

Abstract: In this paper, we consider a car rental company who operates in two cities with two types of demand served by low quality and high quality vehicles. Two types of demand substitution, namely, supply side substitution and customer side substitution are modeled to investigate the optimal fleet size and transfer policy, accordingly.

Abstract: This study focuses on simple stationary demand satisfied by the remanufacturing of products and the manufacture of new products. Further, we presented how to use batch processing to reduce defective products in the remanufacturing and the manufacturing inventory. In this paper, we obtain the economic order quantity of new products and the optimal inventory level of products that have been remanufactured as well as the appropriate return rate for the economic order quantity and the economic remanufacturing quantity. We analyze an inventory system with unit product returns and demands wherein manufacturing is the cheaper alternative to remanufacturing. However, because demand exceeds the rate of return of defective products, remanufacturing of products is also required.

Abstract: Through analysis of water cleaning trajectory in a railway tanker, a mathematical model of cleaning process is set up. Then the actual cleaning trajectories are obtained, and cleaning rate of high pressure water cleaning to the railway tanker is analyzed. Simulations and experiments show that much water is saved and it also has a great significance to improve the cleaning efficiencies of cleaning device.

Abstract: Based on nonlinear vibration theory and synthesizing harmonic balance method, numerical analysis method and reducer vibration test, the paper studies the characteristics of traditional systematic nonlinear dynamics. Based on harmonic balance method, the paper deduces the frequency response equation in the range of the whole frequency and studies magnitude-frequency characteristic. The accuracy of the model is verified by comparing with traditional model. Lumped mass method is used to construct nonlinear dynamics model of 2K-H planetary reducer drive mechanism in new hybrid cars double motor drive system. And the paper makes detailed and deeper analysis on response variation rules of the system and meshing stock state of gear pair with different parameters. Through the analysis of the relevant parameters, the planetary reducer is to have a more profound understanding, laid the foundation for future optimization design.