Applied Mechanics and Materials Vols. 347-350

Abstract: Portfolio selection is a problem arising in finance and economics. While its basic formulations can be efficiently solved using linear or quadratic programming, its more practical variants have to be tackled by heuristics in many cases. In this work, both portfolio return and risk factors need to be considered, so it is abstracted as a multi-objective 0/1 knapsack problem and solved by a novel multi-objective evolutionary algorithm based on SPEA2. Experimental results show that the multi-objective optimization to solve the portfolio problem can better reveal the relationship between benefits and risks, to provide investors with a better basis for decision making.

Abstract: This paper analyzed a 2D plant response model to pruning constructed by environmentally sensitive L-system. Then a computer simulation model based on the 3D plant development was presented. By integrating these two models, a model of 3D trees response of pruning was proposed. The experiment shows that environmentally-sensitive extension of L-systems could make a better simulation on the plant growth change process after pruning.

Abstract: Aiming at the training requirement for cognizing and operating of a type of air-defense equipment, a virtual training system based on combined exploration of Solidworks and OpenGL is designed in this paper. First, considering the main work of the operation and maintenance staff of the air-defense equipment, the general scheme of the virtual training system is designed, and the combined exploring method is introduced. Then, the key techniques of the virtual training system are analyzed, which include virtual scene modeling, collaborative operation simulation and intelligent examination algorithm. The virtual training system provides a low cost and high efficiency platform for operation and maintenance staff of the air-defense equipment.

Abstract: Paper illustrates the background of boutique open video class in China. According to the prepared works of the photographers and the subjects before we taped of the boutique open video classes in the teaching field of China, it researches the techniques which are used in recording video and later editing. It mainly discusses the problems, such as one third composition methods, cutting-body principle, lens push-pull shooting technologies and the photography technology problems and so on. It also studies the forming strategy of the online open classes initiated by foreign distinguished universities.

Abstract: In this paper, a medical middleware design, effective shielding of the differences of communication protocols and data formats between different medical equipments.

Abstract: In this paper, inspired to the high-speed global search ability for genetic algorithm and the positive feedback mechanism for ant colony algorithm, our energy-efficient scheme, called ACGR, was proposed for routing optimization design, in which the communication messages, treated as ants with limited lifetime, are sent by nodes for searching the optimal routing path. Through the proposed scheme, multiple candidate routing paths could be obtained firstly. Then each candidate path is considered as a gene sequence and through the selection, crossover and mutation operations on them, the optimal energy routing path is determined. Simulation results have shown that the proposed algorithm provides promising solution because it takes into account the energy of each node, and extends the lifetime of the wireless sensor network.

Abstract: This paper introduces the concept and features of Internet of things and intelligent logistics, analyzes the role of internet of things in promoting the development of intelligent logistics, as well as the intelligent logistics development strategy under the internet of things development boom, methods should be taken to expand the internet of things tax subsidy policy, establish rearch and development alliances and parallel internet of things group, accelerate the process of standardization and attach great importance to the security construction.

Abstract: Enterprise business continuity risk is to point to have automatic adjustment and rapid response capability, to ensure continuous operation of the business. Through virtualization solutions business continuity, the user will be at a lower cost for higher business continuity is far beyond the traditional way.

Abstract: Character Classification technology is the key link in OCR system. Most classification methods require abundant marked samples training to get classifier. In the real OCR application, there are so many classes, to label these samples are often waste time and energy, especially for unacquainted language, such as Arabic and Uygur, many characters are difficult to differentiate, so it even needs the help of professional guidance. This paper proposed a novel character classification with semi-supervised learning based on information entropy, introduced discrete event probability estimation theory of information entropy, active to select the optimization character samples, got the new parameters to train the classifier again, choose the most conducive to the classifier performance samples, iteration until the unlabeled samples set is empty. The experiment results show that this method achieves high performance in specific condition.

Abstract: Geographic Information System Technology, Global Positioning System Technology, Remote Sensing Technology, collectively known as 3S technology. In the information age, the technology is one of the important technologies for human changes in the Earth's sustainable development research. As the center of the content of the Earth Information Science, along with the surging trend of information technology, it has been a wide range of applications. Through the practical application of 3S technology, this paper maps on the glacier on the Qinghai-Tibet Plateau for a simple exposition.