this paper proposes a new approach for determining efficient dmus in dea models using inverse optimi-zation and without solving any lps. it is shown that how a two-phase algorithm can be applied to detect effi-cient dmus. it is important to compare computational performance of solving the simultaneous linear equa-tions with that of the lp, when computational issues and complexity analysis are a...

Let A be a basis for N0 of some order. By an essential subset of A one means a subset P such that A\P is no longer a basis (of any order) and such that P is minimal among all subsets of A with this property. In a recent paper, Deschamps and Farhi asked whether every basis of N0 possesses some such subset. We construct, for every integer h ≥ 2, a basis of order h with no essential subsets. We al...

In this paper, a novel algorithm for the load flow analysis problem in an islanded microgrid is proposed. The problem is modeled without any slack bus by considering the steady state frequency as one of the load flow variables. To model different control modes of DGs, such as droop, PV and PQ, in an islanded microgrid, a new formula for load flow equations is proposed. A hybrid optimization alg...

Bird, Surgn.-Capt R., Resdt. Surgn., Medl. Coll. Hosptl., in modification of previous notification, to act as Professor of Anatomy, Medl. Coll., and 2nd Surgeon, Medl. Coll. Hosptl., Calcutta, during the absence, on leave, of Surgn.? Maj. R. H. Charles, or until further orders. Drury, Surgn.-Capt. F. J., Offg. Civil Surgn , 24-Parganas, to act as Professor of Midwifery, Medl. Coll., Calcutta, i...

Hepatic hydrothorax usually presents in association with ascites, but there are rare cases when it does not. This case helps to support the differential of hepatic hydrothorax in patients who have a history of liver cirrhosis, portal hypertension, and recurrent pleural effusions without ascites. We hope to support the conclusion that a patient with recurrent pleural effusions, without ascites, ...

Conventional frequent pattern mining algorithms require some user-specified minimum support, and then mine frequent patterns with support values that are higher than the minimum support. As it is difficult to predict how many frequent patterns will be mined with a specified minimum support, the Top-k mining concept has been proposed. The Top-k Mining concept is based on an algorithm for mining ...

The Square Scan Algorithm (SSA) was the first algorithm used to transform line features into vector representations automatically without any help from the user and without any use of other devices for instance, digitizer [1]. This paper presents some important modifications to the SSA algorithm. The main modification is done by drawing continuous squares to detect lines or branches without any...

Partricular features of overpassing local optima and providing near-optimal soultion in practical time has led researchers to apply metaheuristics in several engineering problems. Optimal design of diagrids as one of the most efficient structural systems in tall buildings has been concerned here. Jaya algorithm as a recent paramter-less optimization method is employed to solve the problem using...