Reducing cost of material handling has been a big challenge for companies. Flexible manufacturing system employed automated guided vehicles (AGV) to maintain efficiency and flexibility. This paper presents a new non-linear mathematical programming model to group n machines into N loops, to make an efficient configuration for AGV system in Tandem layout. The model minimizes bot...

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the probability of losing a customer in m/g/n/0 and gi/m/n/0 loss queuing systems withheterogeneous servers is minimized. the first system uses a queue discipline in which a customer who arriveswhen there are free servers chooses any one of them with equal probability, but is lost otherwise. providedthat the sum of the servers rates are fixed, loss probability in this system attains minimum val...

Legume/cereal intercropping has the potential to maximize use of resources raise yields due enhanced nitrogen (N) fixation by legume root nodules, while high N fertilization may inhibit nodulation legume. However, whether legume/cereal can promote accumulation soil storage with and its underlying mechanism are less clear. Here, we evaluated long-term (5 years) effects maize/peanut mineral on pe...

in this paper, we use parametric form of fuzzy number and we converta fuzzy linear system to two linear system in crisp case. conditions for the existence of a minimal solution to $mtimes n$ fuzzy linear equation systems are derived and a numerical procedure for calculating the minimal solution is designed. numerical examples are presented to illustrate the proposed method.

Within this article, we present the application of the AutoSummENG method within the TAC 2009 AESOP challenge. We further offer an alternative to the original AutoSummENG method, which uses an additional operator of the n-gram graph framework to represent a set of documents with a single, merged graph. Both alternatives offer very good results in different aspects of the AESOP results evaluatio...