In the context of energy crisis and environmental deterioration, integrated system (IES) based on multi-energy complementarity cascaded utilization is considered as an effective way to solve these problems. Due different forms various characteristics in IES, coupling relationships among are complicated which enlarges difficulty efficiency evaluation IES. order flexibly analyze operation model f...

this research aims at presenting a consolidated model of data envelopment analysis (dea) technique and value engineering to select the best manufacturing methods for gate valve covers and ranking the methods using topsis.to do so, efficiency evaluation indices were selected based on the value engineering approach and different manufacturing methods were evaluated using dea technique.finally, ef...

the present study used different categories of organized sector manufacturing industries pooled data for the periods of 1981-82 and 2007-08 in haryana state (india). the present undertaking seeks to analyze the inter-temporal and inter-industry comparison of total factor productivity (tfp) measured by malmquist productivity index - an application of dea which calculates the indices of tfp and i...

‎In this paper a new family of fifteenth-order methods with high efficiency index is presented‎. This family include four evaluations of the function and one evaluation of its first derivative per iteration.‎ ‎Therefore‎, ‎this family of methods has the efficiency index which equals 1.71877‎. ‎In order to show the applicability and validity of the class‎, ‎some numerical examples are discussed‎.

OBJECTIVE To investigate the relationship of items having good difficulty and discrimination indices with their distractor efficiency to find how 'ideal questions' can be affected by non-functioning distractors (NF-Ds). METHODS The cross-sectional study was conducted at Fatima Jinnah Dental College, Karachi, during Jan-Jun 2009, with 102 First Year dental students (17-20 years). Physiology pa...

If returns on two assets share common volatility components, the prices of options on the assets should be interdependent and the implied volatility spread should mean revert. We first demonstrate, using the canonical correlation method, that there is a common component among the volatilities of the returns on S&P 100 and S&P 500 indexes. We then exploit this commonality by trading on the volat...

water use efficiency is positively correlated with grain yield, and being used for indirect selection of high wheat yield in drought prone environments. yet little is known about genetic control of water use efficiency. in this research, a half diallel mating design was generated from crosses between 8 bread wheat to study the genetic of water use efficiency. parents and f1 progenies were plant...

in some situations the producers desire to maximize total profit of decision making units (dmus) while the inputs and outputs prices of dmus change from one time period to another. in this paper, the researchers develop productivity index when producers are going to maximize total profit when the price of inputs and outputs are known.the proposed method uses all price information about inputs a...