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Improving the Performance Evaluation of ADSL systems by using a Modem Diagnosis Methodology

This paper presents test methodologies to measure and evaluate performance of ADSL modems which take into account loss of packet rate, bit rate, and latency in transporting ADSL service scenario. This evaluation method can be used by ADSL provider (CO - Central Office) to guarantee the system quality and avoid low performance of service. In order to present this evaluation method, this paper consi

Studies on Oral Immune Reactions in the Genetically Mercury-Sensitive BN Rat and in the Hyperplastic BN-(BNxLEW) Graft-versus-Host Disease

Mercury (Hg) is known to induce adverse immune reactions in sensitive individuals. e.g. selected inbred animal strains. Such reactions involve oral tissues and may reflect immune phenomena, that may also occur in some human oral diseases. Administration of low doses of HgCl2 to the genetically Hg-sensitive BN rats results in the development of a syndrome with autoimmune features [BN(Hg

Coordinate representations for rigid parts in multibody dynamics

The paper is concerned with coordinate representations for rigid parts in multibody dynamics. The discussion is based on the general theory of the dynamics of multibody systems under constraints. General configuration coordinates are introduced and the requirement of their regularity is discussed. The use of Euler angles, quaternions and linear coordinates, where quaternions and linear coordinates

Comparison of standard resampling methods for performance estimation of artificial neural network ensembles

Estimation of the generalization performance for classification within the medical applications domain is always an important task. In this study we focus on artificial neural network ensembles as the machine learning technique. We present a numerical comparison between five common resampling techniques: k-fold cross validation (CV), holdout, using three cutoffs, and bootstrap using five different

On The Road: Following Ethnography From Orange County to Madison Avenue

Ethnography is a very abstract concept, but often perceived as a very concrete practice, but what is hidden in the slippage between the abstract and concrete, as ethnography moves. While a great deal has been written and debated about the practices, methods and outcomes of applied research, and we appreciate these debates, our own point of departure lies in a curiosity over what happens in the pro