data envelopment analysis (dea) is a wide range of mathematical models that used for measuring the relative efficiency of a set of harmonic units whit similar inputs and outputs. this model calculates some different weight for input and output variables in each decision making model. this variation in similar weights caused some critiques to this method. from 1991 some linear and nonlinear mode...

Management systems influence soil quality over time. A study was carried out on Vanmeter farm of the Ohio State University South Centers at Piketon Ohio, USA to evaluate the impact of crop rotations on soil quality from 2002 to 2007. The crop rotations comprised of continuous corn (CC), corn-soybean (CS) and corn–soybean-wheat-cowpea (CSW). Ten soil cores were collected at 0-7.5, 7.5-15, 15-22....

THE 55TH SESSION OF THE COMMISSION ON THE STATUS OF WOMEN (CSW) OF THE UNITED NATIONS (UN) closed last month with little fanfare, but there was cause for celebration. For the fi rst time, the CSW, traditionally a forum to examine improvement of women’s rights and gender equality, merged this broad interest with issues of science and technology (S&T). This makes sense because empowering women as...

The topic of occupational health and safety (OHS) has been investigated for many years continues to be a concept often researched today. Generally speaking, OHS research centered around food safety, construction transportation fire drug alcohol testing, medical management, industrial hygiene, name few. However, the concerning female commercial sex workers (FCSWs) rarely investigated, neglected,...

The performance of the units is defined as the ratio of the weighted sum of outputs to the weighted sum of inputs. These weights can be determined by data envelopment analysis (DEA) models. The inputs and outputs of the related (Decision Making Unit) DMU are assessed by a set of the weights obtained via DEA for each DMU. In addition, the weights are not generally common, but rather, they are ve...

Data envelopment analysis operates as a tool for appraising the relative efficiency of a set of homogenous decision making units. This methodology is applied widely in different contexts. Regarding to its logic, DEA allows each DMU to take its optimal weight in comparison with other DMUs while a similar condition is considered for other units. This feature is a bilabial characteri...

Currently, vast amounts of geospatial information are offered through OGC’s services. However this information has limited formal semantics. The most common method to search for a dataset consists in matching keywords to metadata elements. By adding semantics to available descriptions we could use modern inference and reasoning mechanisms currently available in the Semantic Web. In this paper w...