This paper uses the super efficiency SBM model based on unexpected output to calculate industrial carbon emission of 30 provinces in China from 2005 2019, and spatial autocorrelation other methods conduct an empirical analysis dynamic evolution process temporal differences efficiency. The results show that China's is still low stage, with average value 0.34. In study period, although overall tr...

as regards of supper efficiency models which increased thediscrimination power of the standard dea models, still infeasibility mayoccure. in literature there exists some models overcome this difficulty.in this paper a new procedure has been mooted in order to remove thisshortcoming in a way that both input savings and output surplus arebeing considered. this procedure deals with nonradial chang...

in this study, the relative performance of mazandaran wood and paper company as a major supplier of paper products in iran was measured. network data envelopment analysis (dea) models with parallel structure were used to evaluate and measure its performance. gams software version 23.4 was used for data analysis. results indicated that this company in all studied years had good performances base...

The traditional data envelopment analysis (DEA) literatures generally concentrated on the efficiency evaluation of single decision making unit (DMU). However, in many practical problems, the decision makers are required to choose a number of DMUs instead of a single one from the DMUs set. Therefore, it is necessary to study the combinatorial efficiency evaluation problem which can be illustrate...

Data mining is used to extract hidden information from large databases. In Peer-to-Peer context, a challenging problem is how to find the appropriate Peer to deal with a given query without overly consuming bandwidth. Different methods proposed routing strategies of queries taking into account the P2P network at hand. An unstructured P2P system based on an organization of Peers around Super-Pee...

according to the experiences gathered from pre- earthquakes & revising the rules of design bylaws the subject of reinforcing the present buildings is important nowadays. this project investigates the usage of quake system on wind- occlusion as one of the most efficient ways of shaking development in small, steel buildiongs.including important matters in studying the usage of these systems is su...