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.
UDTCDA (universal dynamic threshold cloud detection algorithm) is a new cloud detection method which was proposed recently. This cloud detection method is supported by priori surface reflectance obtained from MODIS surface reflectance product (MOD09). Reflectance of four bands in the wavelength of visible to near infrared are used to detect the cloudy pixels. Because there is a priori reference data...
Chlorophyll fluorescence is a common approach for understanding leaf photochemical and nonphotochemical processes nondestructively. Among all fluorescence parameters, the photosynthetic electron transport rate (ETR) is a useful indicator of the efficiency of carbon uptake. Traditionally, Pulse Amplitude Modulation (PAM) fluorometry was a key technique for measuring ETR, but it is not applicable for...
Based on analysis of former matter element extension evaluating model, author points out the former model's limitation that the model can not be used when observed data are bigger than the section field value in evaluation of water quality. Combining synthesis weights with approach degree, a new matter element extension evaluating model based on synthesis weights and approach degree is established...
This paper first analyzed the significance and different arithmetic for exhaust enthalpy. Then the influences of relative factors on exhaust enthalpy were analyzed respectively on the foundation of energy balance theory in thermal system. A new calculation strategy was put forward, combined with the regularity in wet steam region and advantage of other arithmetic. Initial values were gained by curve...
Relative internal efficiency is an important economic index which reflects characteristics of flow passage equipments of turbine. This paper analyzed the concepts of relative internal efficiency and cylinder efficiency, and deduced relation-model for them. On the one hand, one new method was put forward to calculate relative internal efficiency. On the other hand, this model could also represent the...
Projection pursuit was a reducing dimensions treatment method. It was widely used to make the transition from high dimensional problem to one dimensional problem by projection direction. It was usually difficult to search the best projection direction, however it could be solved by an optimization question. Aimed at the prematurity and stagnancy shortages of basic ant colony, some improved countermeasures...
For linear discrete-time systems with normbounded parameter uncertainties and actuator failures, a method of non-fragile fault tolerant control with multi-indices constraints is proposed. With the nonfragility of the controller taken into consideration, the consistency theory about circular pole index, steady variance index and H-infinity constraints is presented. The problem addressed is to design...
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.