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.
A MapReduce cloud is the key to the success of cloud computing nowadays by the capability of processing large datasets simultaneously on nodes in a cloud. However, a MapReduce cloud may waste many CPU resources to frequently process similar intermediate data in its Reduce tasks because specific intermediate data is always moved to specific Slave nodes. A MapReduce cloud can utilize the proposed idea...
Multi-domain unified modeling is an important development direction in the study of complex system. Modelica is a popular multi-modeling language. It describes complex systems by mathematical equations, solves the high-index of Differential algebraic equations (DAE) generated by modeling. But in this process, the index reduction based on structural index, which is a key step of solving high-index...
This paper proposes an improved KM algorithm to computing the structural index of linear time-invariant Differential Algebraic Equation (DAE) systems. The problem is of practical significance in index reduction based on structural index of DAE system and combinatorial relaxation theory. This improved KM algorithm combines greedy idea and classical KM algorithm. It first computes matches as much as...
Modeling of complex physical systems with Modelica usually leads to the high-index differential algebraic equation system (DAE), index reduction is an important part of solving the high-index DAE. The structure index reduction algorithm is one of the popular methods, but in special cases, it fails. Combinatorial relaxation algorithm can detect and correct the breakdown situation. And the maximum weight...
On the basis of the monthly precipitation data for the period 1982-2001 collected from 96 observational stations in Southwest China (SWC) and normalized difference vegetation index (GIMMS NDVI), the characteristics of spring vegetation variation over Tibetan Plateau (TP) and its influence on summer precipitation in SWC have been analyzed. The result of our research may lead to the following conclusions:...
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.