Advanced Materials Research Vols. 756-759

Abstract: FCCU (fluid catalytic cracking unit) is a complex system featured by highly non-linear, time variable, long time delay, and close coupling. Studying the process mechanism of FCCU, this paper defines a mathematical model for coupling parameter identification and online simulation. In addition, the author proposes comprehensive tuning technologies for multiple optimization and also systematically describes the cause-effect statistical law for parameter variation based on the input-and-output quantitative relation. The memory, comparison and reasoning of operation experience can help to guide the optimization operation in production process.

Abstract: With the rise of mobile internet applications and popularity of smartphones and tablet PC, more and more applications tend to support multi-platform access. Open and autonomous learning system is a multi-user application system which is applicable for different types of terminals. This article is based on html5 technology, integrates the current popular frameworks and builds service-oriented architecture of open and autonomous learning system. With Web Development Technology curriculum group for the case, it designs a development schema of the learning system and solves the key technical problems in system realization. This scheme can realize development and deployment once, and run in multiple terminal platform.

Abstract: Developmental situation of the software development method in the past was studied. In the past developmental form main contain these: from only considering programming to fully considering total developing process; from the linear development method to iterative development method; from rough qualitative analysis to tight and precise quantitative analysis; from developmental mode of lower efficiency to developmental mode of high efficiency; from the developmental process of walking the chalk to flexible developmental process. Some regularity in the development of software development method are pointed out: new way of thinking can propel the development of software development methods; the change of condition of the goal software can propel the development of software development methods; new developmental tools can propel the development of software development methods; new developmental field can propel the development of software development methods. The efficient path to propel the development of software development method is presented: the development of software development methods is propelled by inheritance the past knowledge of software development, the development of software development methods is propelled by learning and absorbing knowledge of other domain, the development of software development methods is propelled by innovating.

Abstract: To make utility function reflect the comprehensive utility of things and decision, and consider the uncertainty in the decision analysis and things acknowledge, a deeply analysis of the set pair character of utility function is carried on from three aspects: risk aversion, risk neutral and risk pursuit, and then the set pair connection function of risk preference was constructed. Finally, the posture of preference connection degree was discussed.

Abstract: A remote chess play system based on augmented reality has been designed, and that could achieve two people face-to-faces playing chess but in fact the two people are separated by distance. The remote chess play system could be subdivided into six modules, and they are 3D video collected live, chessboard recognition, chess motion detection, compression and translation, virtual-real registration and virtual-real synthesis and 3D video played. The six modules have been introduced in details, and chessboard recognition and alternation of registration have been focused on in this paper. SSIFT-Mean Shift algorithm would be put forward, improving traditional Mean Shift algorithm when the target and background are under the condition of high similarity then the goals are easily lost. More important, real-time is enhanced. Currently the system has been used in practice and the method developed in the remote chess play system also can be applied to the remote medical treatment, distance education and remote interaction, etc.

Abstract: Lots of data have to be transferred in the internet of things at high rate. Using spectrum spreaded by LAS multiple access codes and orthogonal subcarriers, spread-spectrum OFDM system integrates both technologies. When it is elaborately designed, the inter-symbol interference and multiple access interference are eliminated to a large extent. In the environment of fading channel, the decision variable of the receiver is given. This kind of wireless or mobile communication system has good performance so that it is very useful in the future application especially in the internet of things.

Abstract: Digital sandbox is mainly the use of advanced computer technology, adding vivid images multimedia presentations and interactive features, such as 3D-3 dimensional animation and 3D model, combined with state-of-the-art optical imaging technology, on the basis of the existing traditional sandbox, to entertain visitors with dynamic visual effects, beautiful and multi-faceted show. The system for digital sandbox, the study of the generation and synthesis of the of holographic imaging surface image, with MAYA combined, quickly generate the image in all directions, and synthesis, resulting in a realistic three-dimensional scene; interactive virtual scene with speakers, through data gloves to control scene, to reach a wonderful stereoscopic display effect.

Abstract: M-learning based on mobile phone is one way of learning by using Mobile, and it is especially suited to the adult learner. Adults can make full use of their spare time to learn with the help of mobile learning resource anytime and anywhere.M-learning based on mobile phone provides a more convenient way for adult's lifelong learning. Combing with the adult's characteristics, this paper carries out a thorough analysis towards not only this M-learning's location, application scope, enforcement modes and resource construction, but also its problems.

Abstract: The mathematical model of smoke diffusion and dissipation when shells exploding is studied, and the dynamic model based on particle system controlled by the mathematical model and texture mapping techniques is established. The visual simulation of the method is efficient and real-time.

Abstract: This paper first introduces the basic concept of UML and artifacts, then discuss the UML and artifacts in the important role of information systems development, and combined with the development of information system of UML and components of feasibility analysis are studied, finally combined component model with UML modeling technology to develop information system has carried on the systematic study, based on UML is proposed and the components of information system development process.