Architectures parall eles, Bases de donn ees, R eseaux et Syst emes distribu es Abstract Consider a polling system with K 1 queues and a single server that visits the queues in a cyclic order. The polling discipline in each queue is of general gated-type or exhaustive-type. We assume that in each queue the arrival times form a Poisson process, and that the service times, the walking times as we...

Systems of linear constraints are examined from a qualitative point of view. A property is said to be qualitative if it holds for all possible parameter values of certain prefixed sign patterns. In economics, such an approach has been traditionally taken within the perspective of comparative static analysis. However, the results obtained in this area appear somewhat limited in practical applica...

Abstract In this section, we prove that local minimizers of the functional $$\mathcal F_\Lambda $$ ℱ Λ do exist (Proposition 2.1) and give several important examples can be computed explicitly 2.10, Lemmas 2.15 2.16).

abstract barberry is one of the most important products of south khorasan province. the objective of this study is analyzing the qualitative factors affecting the price of barberry in this province. survey data from 100 questionnaires using simple random sampling of households in the city of birjand, 1389 has been completed, was extracted. results of the estimating hedonic price model show that...

Independence of causal influence (ICI) offer a high level starting point for the design of Bayesian networks. However, these models are not as widely applied as they could, as their behavior is often not well-understood. One approach is to employ qualitative probabilistic network theory in order to derive a qualitative characterization of ICI models. In this paper we analyze the qualitative pro...