Advanced Materials Research Vols. 204-210

Abstract: The generation of ozone is efficient by using short high-voltage combined with a dielectric layer placed adjacent to the outer electrode in dry air. Ozone concontration depend on the peak pulsed voltage, pulse repetition rate, gas flow rate, reactor length and so on. For ozone generation by pulsed streamer discharge in dry air, a mathematical model, which describes the relation between ozone concentration and these parameters that are of importance in its design, is developed according to dimensional analysis theory. The presence of nitrogen on ozone formation in dry air cannot only consume high energy electron but also form nitrogen oxides (NOx) in discharge plasma. Nitrogen oxides (NOx) play an important role in the process of ozone generation in air discharge, where the catalytic cycle for ozone destruction takes place. So the nitrogen influencing factor should be considered. Formula is derived for predicting the characteristics of the ozone generation, within the corona inception voltage to the gap breakdown voltage. The predicted results are shown to be in good agreement with experimental findings.

Abstract: Aiming at water security issues existed in water resources development and utilization, studied the water resources carrying capacities of fifteen farms in Jiansanjiang branch bureau in 2008. Used grey correlation analysis to establish evaluation indices system. Entropy theory was introduced into weight calculation. Synthesized evaluation results of traditional matter-element model, fuzzy comprehensive evaluation model and fuzzy matter-element model to grade water resources carrying capacities. The results show that water resources carrying capacities of Farm Shengli, Qindeli, Qianshao and Qianfeng are gradeⅠ; carrying capacities of Farm 859, Daxing, Qinglongshan, Qianjin, Honghe, Yalvhe and Nongjiang are gradeⅡ; carrying capacities of Farm Qixing, Chuangye, Hongwei and Erdaohe are gradeⅢ. The study achievements provide scientific evidences for water resources protection and sustainable utilization in Jiansanjiang branch bureau.

Abstract: Innovation lies in a breakthrough has its own unique view, concrete expression to generate a novel and unique, there is social value or value of the individual thoughts, ideas, methods and products. Business Administration field embodies the innovation and spark creative thinking. In recent years, it is not satisfactory under a variety of educational models in parallel quality of training. TRIZ innovation theory behavior perspective analysis can effectively identify the level of innovation capability in different groups of university students, a series of targeted training activities can practice in this basis in order to achieve creativity in our students the accumulation of knowledge, effective identified and enhanced innovation and practical ability and quality of innovation.

Abstract: For steel truss suspension bridges, traditional construction methods always have their disadvantages. This paper firstly points out the limitations of the traditional construction methods (such as the erection gantry method and the deck crane method). As the solutions, incremental launching method is proposed. Then, as an example based on a certain suspension bridge in Western China, non-linear analysis is carried out in order to illuminate how to decide the important parameters in practical application. Some further problems are discussed at the end.

Abstract: A blind fragile watermarking algorithm based on LSB is proposed in this paper. The watermark is made up of the CRC-32 value of an original image, a meaningful binary image and its CRC-32 value. By embedding the watermark into LSB of these specific pixels determined by m-sequence, some key problems such as information hiding, blind watermark extraction and tamper detection are solved efficiently. The experimental result indicates that this algorithm can meet the digital archives’ copyright protection and tamper detection needs, and it is also practical.

Abstract: This paper explores building excellent corporate culture, implement cultural management to enterprises, and enhance the competitiveness of enterprises. According to Denison Organizational Culture Model, Corporate-Culture Measurement and Assessment System of Redetac Consulting and others, this paper diagnoses the current culture of state-owned forestry enterprises. Then, this understands superficiality of the cultural construction of state-owned forestry enterprises, lack of personality on core values, the old concept of leadership, and no institutionalization of learning and training. This paper proposes countermeasures of excellent cultural building of the state-owned forestry enterprises, such as building a unique corporate culture model, condensing core values, nurturing entrepreneurs, and enhancing learning and training.

Abstract: A kind of unrelated parallel machines scheduling problem is discussed. The memberships of fuzzy due dates denote the grades of satisfaction with respect to completion times with jobs. Objectives of scheduling are to maximize the minimum grade of satisfaction while makespan is minimized in the meantime. Two kind of genetic algorithms are employed to search optimal solution set of the problem. Both Niched Pareto Genetic Algorithm (NPGA) and Nondominated Sorting Genetic Algorithm (NSGA-II) can find the Pareto optimal solutions. Numerical simulation illustrates that NSGA-II has better results than NPGA.

Abstract: The basic composing and functions of underwater autonomous weapon system are analyzed in the paper. With researching on the process of action, the concept model of underwater autonomous weapon system is built up. The impact control method is deeply analyzed on the emphasis, and the model of impact process is put forward. The results of numerical simulation indicate that the impact process model and control method are effectual which can provide reliable theory for farther research on optimization control of system.

Abstract: The perception module system of the virtual human in dangerous circumstances is studied mainly. The decision-making model based on emotion is created with mathematical method. The visual perception method is designed with geometrical algorithm, which can realize the determination of objects’ visibility. Perception module is designed with object-oriented method, including environment-information notification and virtual human’s responser. Communication between virtual human and nearby objects is communicated based on the perception module. The platform, which can simulate virtual human behaviors, is created with OpenGL technology by Visual C++6.0. The simulation results of virtual human behaviors prove that the perception system design of the virtual human is feasible.

Abstract: Ultra-wideband(UWB) is currently one of three new technologies of wireless communication. Multi-user detection technique is mainly used to eliminate multiple access interference（MAI）in DS-CDMA UWB communication systems. Linear multi-user detection algorithm for multi-access interference suppression or even elimination has certain results. But for a fixed decision threshold is set to 0, the detection performance of linear multi-user detection algorithm will be decreased significantly. Therefore a kind of multi-user detection with pre-processing has been researched. Through the pre-processing, we set dynamic threshold to direct decision the user's data bit information so as to solve the problem the linear multi-user detector’s decision threshold which is fixed impact the detection performance. We may get the global optimal solution though pre-processing of using the thought of the branch and bound algorithm and forcing rules. Then the original problem changes into a smaller multi-user detection problem, in order to get the aim of reducing MAI, increasing the probability of a correct decision and reducing the bit error rate. From the simulation experiment results, it is shown that it has a significant effect in system detection, because after pre-processing the probability of a correct decision has increased, and the bit error rate has been reduced.