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In order to solve the problem of microgrid(MG) economic operation optimization, model is built respectively for Na/S battery(NA/S), micro turbine(MT), fuel cell(FC), wind driven generator(WT), photovoltaic cell(PV), and interactive power exchanged with main grid, which moves to an emphasis on cogeneration and unit commitment. Multiple objective function including fuel cost of micro-source, operation...
Credit-based incentives were proposed to incite peer contributions in P2P content distribution systems. Their effectiveness was extensively analyzed from a game theory perspective. Little attention however has been paid to a potential threat to such systems -- the possible condensation of credits in a small number of peers over time. Credits condensation puts system sustainability on the line: many...
Here we improve the theoretical framework for the optimal collaboration among researchers in a research team. A knowledge network model is established to find out the coefficient donating the efficiency of the collaboration with each pair of researchers. Furthermore, the variational inequality theory is employed to work out for the optimal solution for the time allocation problem. Finally a numeric...
VE aims to find solutions to reduce the cost based on the clients' needs of function, which fits the demand of economic and efficient exploitation. Based on discussion of the possibility and necessity of application of Value Engineering in selection and improvement of technology projects for enterprises, this article made theoretical analysis on the application methods, then took an example of hydrate-preventing...
The issue of Water Security has increasingly gained the global concern. Henan province is presently confronted with the severe imbalance in water resources distribution and drinking water security, which is extremely detrimental to agricultural production. In the study of regional water resources optimization, with the guide of systmetic theory, based on improved adaptive genetic algorithm, corresponding...
As an important international competitiveness indicator, real effective exchange rates based on unit labor costs can provide a reliable gauge of price competitiveness about the relative profitability of traded goods in manufacturing. This paper uses reliable data of trade and output data in manufacturing of 21 countries from 1989 to 2003, and adopts time-varying weights, which can reflect the rapidly...
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