Discussion of the Application and Foreground of Falling Water Aeration with the Process of Sewage Treatment

The engineering design of sewage treatment plant for the Chongqing city, P. R. China is analyzed in this paper. Considering the situation of China and other projects, the characteristics of falling water reactor for the environment protection project and economy of investment is introduced ; the application and foreground of falling water aeration in the process of sewage treatment is discussed, such as Oxidation - ditch, SBR, and so on. The conclusion indicated that the falling water aeration can be designed and used as an independent aeration, and, it is an upgraded technology of sewage treatment which is adaptive for city water environment control in middle and small towns in China. The falling water aeration may reduce running cost of the sewage treatment plant, is adaptive for foothill and the mountainous areas, and reduces project investment and environments damage.     

A Mininum Ring-band Mathematical Definition, Numerical Algorithm

A minimum ring-band mathematical definition :In the done ring-band, there are at least two inner points and two outer points which scatter staggeringly on the circumference. With this definition as the rule of searching calculation' s ending,a fast numerical algorithm of gaining the minimum ring-band of a closed curve was suggested:Make a ring-band with the four points scattered staggeringly,then replace the old points with new ones continuously until all the points are located within the ring-band. The method was used in an application example to measure the spindle rotating precision of machine tools.     

Reasoning Method Based on Motorcycle Design

According to the needs of setting up a professional system based on motorcycle design,the CBR(case based reasoning) and RBR(rule based reasoning) methods are introduced.After discussing the difference between the two kinds of reasoning,a method of integrating them into the motorcycle design flow is put forward to realize the design reusable technology and improve the design efficiency,by using the CBR in the step of selecting the similar motorcycle and the RBR in project's modification according to correlative rules.     

Research On Flying Animation System Driven by Data

Larger quantities of data about flight performance and flight condition are recorded by flight data recorder (FDR) during the aircraft's flying. It is an importance task to make 3D flying animation from the data on the process of flight data. The design ideas and realizing methods about the software of flying animation system driven by the data from relation database are presented.     

Application of Function Analysis in Conceptual Design

Product design is a procedure that enterprises meet the needs of consumers; conceptive design is one of the steps in product design and it directly considers requirements of consumers. So how to supply consumers with satisfying function is the essential point. On the basis of function analysis of Value Engineering, the paper puts forward a new method to exercise function definition and function analysis, implements conceptual product design procedure with database techniques.A new way is gotten to convert requirements to conceptual product.     

Resource Management in Application System

Application system generally refers to all kinds of computer information system. It aims at improving the sharing and application of the resource. The resource in application system usually means data resource. For computer management and maintenance, there are not only data resource, but also program resource and network resource. Effective management of this resource is key to ensure proper work of the application system. In this paper, the basic pattern and policy for resource management is put forward and a method to build and realize the resource layer that lies between database layer and application layer is to be found. This management layer, which skillfully connects the application system with resource and establishes good base for application and exploitation of system, is named as resource management system.     

Development And Countermeasure of Timeshare Estate

In this paper the concept and active impaction on economy of timeshare were introduced. According to supply, demand and basic condition, developing timeshare estate were provided with basic condition in China. Analyzing the history of timeshare we can get the conclusion that it was unused real estate to startup the timeshare and so the development of timeshare in China have partly active effect. At last, in this paper the policy risk, consumption anticipation risk, lack of demand risk, product design risk, market orientation risk, system management risk, competition risk, internationalization risk, and market impression risk were analyzed except the market risk, business risk and polity risk and so on which were the common risks of real estate. And the countermeasure and measure how to promoting the development of timeshare estate were put forward.     

A Study on the Model of Surface Storm-Water Runoff at Urban Gully

On the assumption that the runoff on the catchment of each gully flows into the gully itself, in this paper, a model of surface storm-water runoff at urban gully is presented, which includes runoff sub-model and concentration sub-model.The runoff sub-model describes the rainfall event with instantaneous rainfall intensity, the runoff-generated event with runoff coefficient of integrative area and the runoff converged event with the principle of equal time of flowage.The concentration sub-model shows that the pollutant concentration event only changes with the runoff event at the gully.In this paper, the concrete form of the model for two gully inlets in Shapingba District of Chongqing is given.The model is calibrated with the data from the synchronized measurements of water quantity and quality at the two gully inlets obtained from July to September 2000.The relative error is calculated by comparing the model predictions with the field-measured results.