While many existing rate adaptation schemes in IEEE 802.11 Wireless LANs result in severe throughput degradation since they do not consider the collision effect when selecting the transmission rate, CARA (Collision-Aware Rate Adaptation) [1] shows improved system performance thanks to its collision-awareness capability. In this paper, we propose two enhancements to the original CARA scheme to f...

The use of principal component analysis in measuring the capability of a multivariate process is an issue initially considered by Wang and Chen (1998). In this article, we extend their initial idea by proposing new indices that can be used in situations where the specification limits of the multivariate process are unilateral. Moreover, some new indices for multivariate processes are suggested....

In this paper, we consider the supplier selection problem for normally distributed processes with multiple independent characteristics based on process capability index A two-phase testing procedure based on the quotient of two statistics is proposed to deal with the problem. We obtain the sampling distribution and the probability density function of the quotient. Several tables of the critical...

abstract. in the case of process capability index several methods are identified. in this paper ,a new process capability index using fuzzy number and fuzzy probability concept, in order to remove the weakness of other famous method is suggested. after introduction of fuzzy index in univariate case, fuzzy multivariate process capability index is investigated. finally, this new method is compare...

Integrating a geographic information system and multi-criteria decision making methods have been lead to provide spatial multi-criteria decision making methods. In this study, the spatial potential of flooding was determined based on analytic network process and analytic hierarchy process. At first, six factors of flooding were determined as criteria. The criteria were the slope, hill-slope asp...

This study, based on the traditional 4P framework, proposed a construct, dynamic marketing capability, which reflects the extent to which a firm can dynamically adjust its marketing activities and resources in response to changing environments. The construct is hypothesized to mediate the effect of a firm’s information technology (IT) support for CRM on firm performance. With a survey of the 50...

The cluster has shown its powerful competitive advantages in global competition. However, as amounts of industrial clusters have displayed their competence, some have lost their competitive advantages in global competition. It is meaningful for clusters’ development to cultivate their sustainable competence. This paper analyzes the sources of cluster competence. According this paper, the import...

This paper proposes a generic technique for the evaluation and comparison of the capability of Embedded Systems (ESs) as decision-making aid. The major issue in this area is conducted by comparing and evaluating success factors and the risks associated with each ES. In this regards decisionmaking modelling concepts are based on the identification of capability factors and finding mathematical m...

Being able to systematically change the original architecture of a component-based system to a desired target architecture without changing the set of functional requirements of the system is a useful capability. It opens up the possibility of making the architecture of any system conform to a particular form or shape of our choosing. The Behavior Tree notation makes it possible to realize this...