The ubiquity of smart portable devices has led to concurrency control for the mobile network becoming an area of growing concern. Conventional optimistic concurrency control techniques require retries of failed or disputed transactions, which place additional drain on the energy consumption of both the network and the smart device. We present a Distributed Later Validation Earlier Write Optimis...

Keywords: Fuzzy DEA Intuitionistic fuzzy DEA Optimistic and pessimistic performance Ranking methods Bank branch efficiency a b s t r a c t Intuitionistic fuzzy set (IFS) is an extension of fuzzy set and an approach to define a fuzzy set where available information is not sufficient to define an imprecise concept by means of a conventional fuzzy set. The existing fuzzy DEA (FDEA) models for meas...

Fair exchange protocols are important in realizing safe electronic commerce. In particular, optimistic fair exchange protocols, which involve a trusted third party only when mutual communication between exchanging parties fails, are the most promising development because of their efficiency. Unfortunately, however, existing optimistic protocols place restrictions on the items that can be exchan...

data envelopment analysis (dea) is a method to measure relative efficiency of a set of decision-making units (dmus) which uses multiple inputs and produces multiple outputs. in the conventional dea, crisp inputs and outputs are fundamentally necessary. but the observed values of inputs and outputs in real-world problems are sometimes imprecise. thus, performance measurement often needs to be do...

  A data envelopment analysis (DEA) method can be regarded as a useful management tool to evaluate decision making units (DMUs) using multiple inputs and outputs. In some cases, we face with imprecise inputs and outputs, such as fuzzy or interval data, so the efficiency of DMUs will not be exact. Most researchers have been interested in getting efficiency and ranking DMUs recently. Models of th...