The objective of this research is to use item response theory (IRT) to validate a 14-item peer relations scale for use in the adolescent treatment population. Subjects are 509 adolescents discharged from substance abuse treatment from 2004-2009. The person reliability is 0.76 and the Cronbach's alpha person raw score reliability is 0.93 both indicating the scale is a strong metric. The item rel...

A novel no-reference blockiness metric that provides a quantitative measure of blocking annoyance in block-based DCT coding is presented. The metric incorporates properties of the human visual system (HVS) to improve its reliability, while the additional cost introduced by the HVS is minimized to ensure its use for real-time processing. This is mainly achieved by calculating the local pixel-bas...

The paper is a study of reliability for turbo decoder. To improve the weakness of reliability assignment using metric values directly, the reliability values of the survivor paths are trace back by an updating process at different time values. It is also analyzed the influence of channel reliability factor on performance of the iterative turbo decoder over a Gaussian channel. The simulations ar...

We provide a comparative analysis of various routing strategies that affect the end-to-end performance in wireless mesh networks. We first improve well-known link quality metrics and routing algorithms to enhance performance in wireless mesh environments. We then investigate the route optimality, i.e., whether the best end-to-end route with respect to a given link quality metric is established,...

In this paper we study through simulations the impact of PHY/MAC protocols on higher layers. In a comparative way, we investigate the effectiveness of some protocols when they coexist on a wireless mesh network environment. Results show that PHY/MAC parameters have an important impact on routing performances. Based on these results, we propose two traffic-aware routing metrics based on link ava...

In this paper, we examine reliability of stochastic systems with speci c application to Stochastic Process Algebras. We look at variance as a possible reliability metric and show how it can be reduced across di erent Stochastic Process Algebra combinators, thus giving more deterministic and reliable systems. We apply these techniques to analyse and improve a searching algorithm.

This document describes a common practice on how the existing metric of Interior Gateway Protocols (IGP) can be used as an alternative metric to the Traffic Engineering (TE) metric for Constraint Based Routing of MultiProtocol Label Switching (MPLS) Traffic Engineering tunnels. This effectively results in the ability to perform Constraint Based Routing with optimization of one metric (e.g., lin...

To discovery a high-throughput path for multimedia application, such as 3D stereoscopic application, in wireless mesh networks, existing route selection schemes only use a link quality metric based on the expected amount of medium time it takes to successfully transmit a packet. Thus, these schemes may easily result in network congestion. This is because the current status of traffic load is no...

Interpretability and discriminative power are the two most basic requirements for an evaluation metric. In this paper, we report the mention identification effect in the B3, CEAF, and BLANC coreference evaluation metrics that makes it impossible to interpret their results properly. The only metric which is insensitive to this flaw is MUC, which, however, is known to be the least discriminative ...