Papers by Keyword: Optimal Size

Abstract: The paper presents an algorithm, methodology and results of solving the primary problem of determining the stress-strain state and choosing design parameters for a three-layer structure under uniform pressure loading, depending on the size and pitch of support filler’s cells, as well as geometry features of the simulated structure.

Abstract: The installation of distributed generation (DG) gives advantages to the environment such as, it contribute in the reduction of non-peak operating cost, diversification of energy resources, lower losses thus improving overall organization. These advantages might be rescinded if no proper location and sizing of DGs are considered before the DG’s installation. This paper offers an optimal location and sizing of multiple DGs using heuristic method called gravitational search algorithm (GSA). The suggested algorithm is tested on 13-bus radial distribution system. This method is being compared with particle swarm optimization (PSO) in terms of system power loss, voltage deviation and total voltage harmonic distortion (THDv). GSA shows the ability to locate and sized DG optimally with a better performance and more reliable than PSO.

Abstract: Establishing strategic petroleum reserve is one of the important measures to ensure the safety of Chinas oil supply and concerns the long-term development of China. This paper mainly summarized the three big issues about China's strategic petroleum reserve: optimal scale, optimal reserve structure and influence factors, and put forward some ideas for further research.

Abstract: From the perspective of maximizing the economic growth rate, this paper examined the optimal size of China’s fiscal expenditure with theoretical and empirical methods. First, the paper established a Pure Public Goods Model, based on which it further estimated that during the period of 1978-2006, China’s optimal size of fiscal expenditure is about 21.82-27.28 percent of GDP. Judging by this optimal criterion, it finally divided China's policy development into three stages: (1) the higher-size stage (1978-1992); (2) the lower-size stage (1993-1999); (3) the optimal-size stage (2000-2006)