检索结果-南通市图书馆

Analysis of Micro Thermal Environment for Residential District Planning

在线全文

cnki会议

学校读者我要写书评

暂无评论

湖南大学学报（自然科学版） 2009年第S1期36卷 51-54页

作者： ZHANG Wei-jie1,QI Jing2,JIN Wen2(1.Institute of Urban Construction,hebei university of engineering,handan,hebei 056038,china 2.School of Architecture,hebei university of engineering,handan,hebei 056038,china) Institute of Urban Construction Hebei University of Engineering Handan 056038 China School of Architecture Hebei University of Engineering Handan 056038 China

This paper focused on residential district planning *** GIS and SketchUp software,a common digital relief map model of a residential district was created,and the air distribution(both velocity and temperature)within this residential district was established by CFD ***,the velocity and temperature of the air at any location within the residential district,as well as the worse flow area and overheat area can be clearly *** index of micro thermal environment for the air distribution evaluation was *** on a certain residential district planning model,from the air parameters of the micro environment at any location within the residential district,such as air velocity and air temperature,the index of micro thermal environment was obtained by certain principles and data processing *** this index,the residential district planning scheme was evaluated corresponding to the thermal characteristics of the residential *** this index is not good enough or unsatisfied,the residential district planning idea and process can be changed or improved accordingly in order to get a better thermal characteristics of the residential district judged by the established evaluation index system.

关键词： residential district planning micro thermal environment micro thermal environmental index CFD SketchUp

Intelligent Control on Hot Strip Coiling Temperature

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2000年第2期14卷 147-150页

作者： Heping Liu Yanlong Zhao(Information engineering School, university of Science and Technology Bejing, Beijing 100083, china)(handan Iron & Steel (Group) Co, handan 056015, china) Information engineering School University of Science and Technology Beijing Beijing 100083 China handan Iron and Steel (Group) Co. Handan 056015 China

A new intelligent control scheme for hot strip coiling temperature is presented. In this scheme, the prediction mode1 of finishing temperature and the presetting model of main cooling zone are establish based on BP neural network, the feed-forward open-loop control model of main cooling zone is constructed based on T-S fuzzy neural network, a new improved structure of T-S fuzzy neural network is developed, and the feedback close-loop control model of precision cooling zone is obtained based on fuzzy control. The effectiveness of the proposed scheme has been demonstrated by computer simulation with a satisfactory result.

关键词： coiling temperature control laminar cooling fuzzy control neural network, fuzzy neural network

Stabilization of Chaotic Time Series by Proportional Pulse in the System Variable Based on Genetic Algorithm

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 1999年第3期13卷 228-229页

作者： Qing Li Deling Zheng Jianlong Zhou(Information engineering School, university of Science and Technology Beijing, Beijing 100083, china)(handan iron and Steel Co., handan 056015, china) Information engineering School University of Science and Technology Beijing Beijing 100083 China handan Iron and Steel Co. Handan 056 015 China

The PPSV (Proportional Pulse in the System Variable) algorithm is a convenient method for the stabilization of the chaotic time series. It does not require any previous knowledge of the system. The PPSV method also has a shortcoming, that is, the determination off. is a procedure by trial and error, since it lacks of optimization. In order to overcome the blindness, GA (Genetic Algorithm), a search algorithm based on the mechanics of natural selection and natural genetics, is used to optimize the λi The new method is named as GAPPSV algorithm. The simulation results show that GAPPSV algorithm is very efficient because the control process is short and the steady-state error is small.

关键词： stabilization chaotic time series genetic algorithm

The application of unascertained measurement model in safety evaluaion of construction

在线全文

学校读者我要写书评

暂无评论

The application of unascertained measurement model in safety...

2009 ISECS International Colloquium on Computing, Communication, Control, and Management

作者： Wang Yu-de School of Civil engineering hebei university of engineering handan,hebei Province,china Guo Yan-hua School of Civil engineering hebei university of engineering handan,hebei Province,china

The evaluation of construction’s safety is a systematic project involving ***,select the most impact factors on safety evaluation of construction as indicators,establish unascertained measure comprehensive evaluation *** used by the model shows that the evaluation result can objectively reflect construction’s safety,which provides a new method and way for safety evaluation of construction and has theoretical and practical *** to the ordered division of evaluation space,the unascertained measure model improves distinguish *** has reliable assessment result and is a practical model.

关键词： Safety evaluation of construction uncertainty measure categorization weight index system

Improved Bayesian Network in Steam Turbine Fault Diagnosis

在线全文

cnki会议

学校读者我要写书评

暂无评论

Improved Bayesian Network in Steam Turbine Fault Diagnosis

2010 The 2nd International Conference on Industrial Mechatronics and Automation (ICIMA 2010)

作者： Zhao Qi Institute of information and electrical engineering hebei university of engineering handan china Liu Yi Institute of information and electrical engineering hebei university of engineering handan china

The fault diagnosis model of steam turbine based on Bayesian network is direct impacts on the complexity of the diagnostic process,so the construction of Bayesian network model is the primary *** actual fault diagnosis system of steam turbine containing redundancy and uncertain information,proposed attribute reduction method to fault feature,obtained the minimal diagnosis *** on two-node union reverse inference,proposed an improved program in the construction of Bayesian *** Bayesian network model based on the minimum fault decision table can effectively reduce the complexity of the network structure,while the using of improved Bayesian network can further reduce complexity of structure and improve the diagnosis ***,the effectiveness and fastness of this method are validated by the result of practical fault diagnosis example in Bently-RK4 rotor vibration bench.

关键词： steam turbine fault diagnosis Bayesian network attribute reduction two-node union reverse inference Bently-RK4 rotor vibration bench

Reviews on Measurement and Optimizing Countermeasures of Human Capital in hebei Province

在线全文

cnki会议

学校读者我要写书评

暂无评论

Reviews on Measurement and Optimizing Countermeasures of Hum...

2010 2nd IEEE International Conference on Advanced Management Science（IEEE ICAMS 2010）

作者： Jun Guan School of Economics and Management hebei university of engineering handan china Li Yuan School of Economics and Management hebei university of engineering handan china

Human Capital is the main driver of the modern economic *** thesis analyzes human capital present situation of hebei Province and its *** the thesis puts forward the suggestions on how to improve the function of human... 详细信息

关键词： hebei Province Human Capital Human Capital measurement

On Emulation of Expert Systems based on development of agents

在线全文

cnki会议

学校读者我要写书评

暂无评论

On Emulation of Expert Systems based on development of agent...

2008 2nd International Symposium on Information Technologies and Applications in Education(ISITAE2008)

作者： QU Zhiming School of Civil engineering hebei university of engineering handan hebei Province 056038 china

In recent years, much research has been devoted to the visualization of redundancy. Contrarily, few have enabled the development of agents. In fact, few statisticians would disagree with the analysis of Smalltalk, which embodies the typical principles of theory. Through experiments and results analysis, it is concluded that new signed information is proposed, which proves to be practicable on emulating expert system based on agents development.

关键词： Expert Systems Development Agents Emulation.

An algorithm to solve autocorrelation matrix singular value based on SNR estimation

在线全文

cnki会议

学校读者我要写书评

暂无评论

Optoelectronics Letters 2009年第1期5卷 41-44页

作者：赵继军张曙光赵文玉 College of Information & Electronic engineering Hebei University of Engineering The Insititute of Telecommunication Transmission Ministry of Information Industry of China

SNR estimation of communication signals is important to improve demodulation performance and channel quality of communication system,thus it is an important research issue of communication *** to the core problem of autocorrelation matrix singular value in SNR estimation process,through making use of householder transforming autocorrelation matrix into tridiagonal matrix,and by using the relation of corresponding characteristic equation coefficients and singular value,a numerical algorithm is gi...

关键词： Acoustic intensity Algorithms Channel estimation Communication systems Correlation detectors Estimation Matrix algebra

Application of PCA in Controlling and Reducing Enterprise Logistic Cost

在线全文

学校读者我要写书评

暂无评论

Application of PCA in Controlling and Reducing Enterprise Lo...

2010 2nd International Conference on Modeling, Simulation,and Visualization Methods(WMSVM 2010)

作者： Xiao-ying LIANG School of Civil engineering hebei university of engineering handan,hebei Province,056038,china Jiansheng MA School of Civil engineering hebei university of engineering handan,hebei Province,056038,china

Logistic cost is accompanied by logistic activities.A logistic cost is an important indicator to measure the production efficiency of an *** strengthening the logistic management awareness,how to effectively reduce logistic cost has become a core *** primary components analysis(PCA) and its advantages,influential factors on logistic cost reduction in enterprise material conveying is *** the basis of PCA model and scores by the experts,the authors computed some results that can reflect logistic cost *** case study,it can be seen that some factors play very important role and all the reasons should be taken into account because logistic cost reduction depends on the interaction of all the *** analysis and deduction,it is concluded that,under the premise of minimizing the information loss of data,the application of PCA in the investigation on logistic cost reduction in enterprise material conveying approves to be practicable.

关键词： PCA enterprise logistic cost index system