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Fan S.-G.,Shenyang Normal University | Zhang Y.-H.,Xiangfan Vocational and Technical College
Proceedings - 2010 1st International Conference on Pervasive Computing, Signal Processing and Applications, PCSPA 2010

Today, In this paper, we describe a new increment maintenance algorithm, which is "increment maintenance algorithm based on multiple delta files". It makes the smallest result sets of data warehouse loading and maintenance as real. In addition, it adopts multiple tiers infrastructure; by using data warehouse base, it links operation model OLTP environment and DDS/OLAP environment together. In both data warehouse base side and data warehouse side, we all use multiple version control mechanism to get the size of result sets dynamically and in data warehouse side, We use "increment maintenance methodology" at same time. Thereby, during the backend processes maintenance, we can use the smallest result sets for batch loading. Based on this design, it does not affect the data warehouse query operation, and in the meantime, it affects the OLAP and OLTP environment very slightly. This methodology and its infrastructure are very easy to implement and has very useful engineering reference values. © 2010 IEEE. Source

Geng B.,Xiangfan Vocational and Technical College
ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

According to mathematical model, we have mainly studied some methods about mathematical model's simulating output data. And we have analyzed some basic key points about transient simulation and static simulation. We also have analyzed the mathematical model's performance measuring and estimating which includes point estimation and interval estimation. And we have gotten the prescribed precise confidence interval. What have studied must be helpful to study computer simulation output data which based on mathematical model. © 2011 IEEE. Source

Zhu L.-T.,Hubei University of Arts and Science | Shen H.-Y.,Xiangfan Vocational and Technical College
Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology

In this paper, in order to utilize these industrial solid wastes, a high performances thermal insulation ceramic brick major made of desulphritation ash from power plants by used semi-dry pressing technology, and some additives were used to improve the performance. The composition, microstructure and properties of the raw industrial solid wastes have been tested by TG-DTA, SEM, XRD and XRFA. The experiment indicated that the sample H-5 had the best performances and microstructure, its water absorption (Wa) was 24%, porosity (Pa) was 38%, bulk density (D) was 1.66 g/cm3, the bending strength was 10.36 MPa and the compression strength was 47.459 MPa, freeze-thaw resistance was 43.295 MPa, thermal conductivity (α) was 1.333×10-2 W·cm-1·K-1. The properties of ceramic insulating bricks had reached the national standard of fired common bricks GB 5101-2003. © 2015, Beijing Institute of Clothing Technology. All right reserved. Source

Wang D.,Xiangfan Vocational and Technical College | Qian X.,Changzhou Institute of Technology
ICCASM 2010 - 2010 International Conference on Computer Application and System Modeling, Proceedings

Turbocharger of turbo-supercharged engine adds air input by compressing air. Usually, the exhaust gas produced by engine and the turbine is driven by the exhaust gas' momentum. Then the turbine drives the coaxial impeller, and the impeller presses the air which comes from the pipe of air filter into the air cylinder. When the engine's rotate speed is faster, the speed of exhaust air and turbine's rotate speed are faster, too. So the impeller presses much air into the air cylinder. And the pressure and density of air in air cylinder are increasing at last; this will consume too much fuel eventually. So, the engine's output power can be controlled by the quantity of fuel and the rotate speed of engine. Because a time difference existed in the process of turbo charging, and the out pressure which produced by the turbocharger always comes slowly. Usually, a good turbocharger needs two seconds to add or reduce the engine's output power at least. We have improved a kind of new-style turbocharger and its control system in accordance with the defect. And the system has been passed some tests. Comparing with the conventional turbocharger system, the improved system has such advantages as low cost, high efficiency, and so on. © 2010 IEEE. Source

Geng B.,Xiangfan Vocational and Technical College | Bao Y.,Changzhou Institute of Technology
ICCASM 2010 - 2010 International Conference on Computer Application and System Modeling, Proceedings

On the basis of computer network theory, we have designed the underground garage's monitoring system about temperature, humidity and toxic gas. The whole system consists of hardware and software. In this paper, we first introduced the principle of fuzzy control including its characteristics and important methods of applications. The experiment results of the system show us that the whole monitoring system has such advantages as easy structure, stable performance and high reliability. The system could be used in practical applications, such as coal mining industry. © 2010 IEEE. Source

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