Advanced Materials Research Vols. 268-270

Abstract: Recently, the digital meters have much more development in the worldwide. The CS5460A is a single chip that can measures the energy, and provides the ideal cases for its high-integrated and high-precision. Not only the CS5460A can be applied to measure the power、energy、voltage and current, but also can be integrated with the MCU to avoid the power loss and over-wasted for conserving electric energy in the house. The paper introduces the system designation that it is the resolution of the house conservation energy. The system uses the CS5460A to measure the electric power that the house is costing, and then gets the extra electric power which the AT89S52 does read, at last controls the electrical equipments through the analysis of the power and the action of the relays.

Abstract: The localization GPS electronic chart apparatus system adopts 32-bit embedded processor as the controller, which greatly enhanced the processing speed,reduced the volume of electronic chart apparatu, improved the stability, greatly reduced the cost.In the design of system control software, adopted non-real-time operating system; file management using FAT16 file system of DOS to manage 16M file storage space, so, we can easily create and delete documents in an embedded electronic chart apparatus.In addition,used non-standard digital vector charts, making the charts data format and processing display project no different,which improved the security.

Abstract: As traditional text representations are not suitable for online dynamic streams, this paper presents a hot topic extraction technique that can be used for tracking news topics over time. The model combines individual word burst into the document-word vector representation, which can emphasize the temporally features of text streams. An energy ratio threshold based burst detection approach is proposed and TF-PDF is then combined to weigh the terms. Experiment results demonstrate that this model is effective in topic extraction for news stream and it can better improve the clustering performance.

Abstract: According to the requirements of most .NET-based Applications, it is necessary to analyses the principles of importing external data to Access database and exporting internal information to Excel achieved by .NET code, when we are dealing with initial data maintenance, data back-up, etc. These principles are used to the practical solutions and the working efficiency can be improved.

Abstract: Excess pore water pressure caused by construction dissipated, resulting in consolidation settlement. The formula of initial excess pore water pressure around tunnel lining was deduced by stress relief theory, and its formula within the region of its distribution at any point was subsequently deduced by stress transfer theory. By comparing the measured data, shows that the calculated closed to the measured, and with the distance increased the initial excess pore water pressure decreased in a concave curve shape. When the depth of tunnel increased or the diameter decreased, would made initial excess pore water pressure between the tunnel bottom and tunnel center horizon around tunnel lining more different. At a certain depth, the mast initial excess pore water pressure above tunnel axis, away from the axis reduced; showing a similar PECK shape.

Abstract: It is important to manage the dynamic information of moving objects in database technique, it is crucial that how to manage and query the dynamic information of moving objects effectively. In this paper, a system to manage moving object is discussed, which changes time-space into ST-GRlD (space-time grid) model and changes the moving tract of the moving object into poly line in the ST-GRlD .The Ripple Insert algorithm to produce poly line tract and the solution of moving object abruptly changing destination are given.

Abstract: The design and description approach for aspect-oriented software architecture (AOSA) has made great progress in the past several years. However, there are few efficient techniques or approaches for evaluating adaptability of AOSA. According to the characteristics and running environments of software system nowadays, this paper proposes quantitative measurement technique for evaluating adaptability of AOSA based on class point (CP) and the feature of AC2-ADL. This technique can provide support of measurement for aspectual component and aspectual connector in AC2-ADL. In the future, we will accomplish an approach for evaluating adaptability of AOSA based on this measurement technique.

Abstract: Tests were performed with a light-vehicle diesel engine. Four representative operating conditions in 1600r/min speed have been considered. This article compares the combustion and emission characteristics of engine fueled with Bio-diesel and standard diesel. The results showed that the ignition delay time and combustion duration shorten when fuel with bio-diesel. Bio-diesel contains more oxygen and that contribute to complete combustion of fuel. The combustion of bio-diesel fuel results higher NOx emission and lower HC、CO emissions at all operating conditions. But lower Soot emission because of bio-diesel dose not contains sulfides. At the same time, fuel consumption higher, because calorific value of bio-diesel is lower than standard diesel.

Abstract: The article analyzes the development of UROP in the international environment, learning from its successful experience and putting forward the plan which is suitable for the cultivation of Tianjin Medical University undergraduates’ innovation ability of science and technology. Furthermore, the article explores the problems at present.

Abstract: Starting from regional distribution, unit distribution, enrollment distribution and other parameters, the paper makes a multi-angle and all-round analysis of the distribution of master of science in physical education (MSPE) degree programs in China, pointing out that regional balance of MSPE should pay attention to in future development. To promote the development of MSPE education, the regional enrollment should be optimized according to social needs, independent training should be maintained, and the training system should be improved.