The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The switch mode power supply (SMPS) have been widely used in the electrical and electronics systems for AC-DC and DC-DC power conversion, which can generate a lot of electromagnetic interference (EMI), especially conducted emission (CE) from 9kHz to 30MHz. The traditional CE models and mechanisms have been present for three line systems, including live, neutral and ground lines, while a novel CE models...
In order to solve the transformation problem of BOM from engineering BOM to maintenance BOM for MRO system (MRO, Maintenance, Repair and Overhaul), a formal transformation model of BOM view is established. In this model, the intermediate component, inherit component, virtual component are defined on the specific maintenance management domain, and the transformation process from engineering BOM to...
The strip replacement mining in short-distance thin coal seam is one of the effective methods controlling displacement deformation of overlying strata and surface subsidence in coal mining under buildings and railroads and water bodies. The method has a great theoretical significance and application value by increasing recovery rate of coal resources and cutting down the effect of coal mining on environment...
In this paper, soil organic carbon was simulated in the next 50 years with CENTURY model in different climate scenarios at Damxung alpine meadow ecosystem. The result shows that temperature and precipitation are the main contributor to the changes of soil organic carbon. Increase in temperature and precipitation can reduce the accumulation of soil organic carbon resulting in the release of soil carbon...
This paper introduced our independently developed media monitoring system on city image from five aspects: background, process, architecture, index and application. The system targets on monitoring, analyzing and evaluating a city's image, then help the city accurately know about itself, monitor its news and issues, propose its public relations strategies, market its city brand while perfectly shape...
An improved multi-group evolutionary programming is proposed and applied to power plant planning. The minimum total cost capacity expansion scheme is established to meet the nonlinear constraints of planning and operating. In this paper the planning objective costs take into account unnerved energy costs besides investment, operation and environment pollution costs. A novel bi-group evolutionary programming...
A genetic algorithm (GA) based approach to solve a fuzzy multi-objective nonlinear programming (FMNP) problem is presented and applied to water resources allocation. A FMNP model of regional water allocation is established originally. The objective functions of the model include three conflicting goals which are economic profits, environment goal and society goal. By turning the FMNP to an optimal...
This paper presents a method of human body feature curve generating for 3D (three dimensional) human modeling. In the proposed approach, the model of four-layer feed forward BP(back-propagation) neural network is given, by making use of the real human body data, the training samples of the neck, bust, waist and hip are obtained. The weight and the feature curve modeling of the neck, bust, waist and...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.