This paper presents a set of simulation studies for comparing the performance of several flow-based scheduling algorithms, namely Weighted Fair Queuing, Self-Clock Fair Queuing, Start-Time Fair Queuing, Virtual Clock, Worst-case Fair Weighted Fair Queuing and Worstcase Fair Weighted Fair Queuing-plus. These algorithms are being considered for IP networks supporting Quality of Service (QoS).

Children presenting with Perthes' disease before their sixth birthday are considered to have a good prognosis. We describe 166 hips in children in this age group. The mean age at onset of the disease was 44 months (22 to 72). Mild forms (Catterall I and II) were treated conservatively and severe forms (Catterall III and IV) either conservatively or operatively. The aim of the former treatment w...

Fair scheduling algorithms are an important component of most QoS mechanisms designed to support the performance guarantees required by real-time applications. In this paper, we present Greedy Fair Queueing (GrFQ), a novel scheduler based on a greedy strategy of reducing the maximum difference in normalized service received by any two flows at each trasmission boundary. We prove that the GrFQ s...

Received 3/30/2009; revised 4/13/2009; accepted 4/21/2009. For correspondence and reprints contact: Chi-Yun Chen, M.D., Department of Nuclear Medicine, Antai Tian-Sheng Memorial Hospital. 210 Section 1, ChungCheng Road, Tungkang, Pingtung 92842, Taiwan. Tel: (886)8-8329966 ext. 1631, Fax: (886)8-8329977, E-mail: [email protected] Objective: The purpose of this study was to compare the image...

BACKGROUND Atopic eczema or dermatitis (AD) is associated with atopy and is characterized by reduced skin hydration and an impaired skin barrier in the epidermis. We investigated the patient acceptability and efficacy of an emollient containing ceramide-precursor lipids and moisturizing factors (LMF) in AD. METHODS Consecutive AD patients were recruited. Swabs and cultures were obtained from ...

The ability to quickly deploy new protocols, and provide flexibility to both applications and network administrators has been an oft-cited reason for active networks to be seriously examined. This paper describes an architecture and implementation that provides dynamic installation of network services and flexibility to active code. An example of weighted fair queuing being installed dynamicall...

conclusion investigative assessment of breast us by residents is inadvisable. we recommend continued professional resident training to improve the degree of agreement and performance. results for the faculty members, fair-to-good agreement was obtained in all descriptors and final assessment, while for residents, poor-to-moderate agreement was obtained. the areas under the roc curves were 0.78 ...

 Background: A fair and just trial, as one of the most fundamental moral demands in the legal system, can have positive consequences in the legal system. The effectiveness of the registration system in society is increasing and it is necessary to conduct appropriate surveys to meet their expectations, especially in terms of paying attention to the substantive rules of fair trial. The rules and ...

The performance of various GFR (Guaranteed Frame Rate) implementations has been recently studied due to the interest to provide bandwidth guarantees with a simpler implementation than ABR in ATM networks. In this paper we describe and evaluate a scheduling algorithm to provide the GFR service guarantees. The evaluation is performed by simulation using TCP connections. The proposed scheduling is...