Many research teams are developing technologies to turn the Internet into a QoS-capable network, which is one of the biggest challenges that this communication system currently faces. Naturally, at the core of such a challenge are IP routers and the technology they use. It is a well known fact that the common packet scheduling discipline that is used in routers (first come first served) makes t...

We consider scheduling policies for maxmin fair allocation of bandwidth in wireless adhoc networks. We formalize the maxmin fair objective under wireless scheduling constraints. We propose a fair scheduling which assigns dynamic weights to the flows such that the weights depend on the congestion in the neighborhood and schedule the flows which constitute a maximum weighted matching. It is possi...

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...

Many works have tackled on the problem of throughput and fairness optimization in cellular cooperative relaying systems. Considering firstly a two-user relay broadcast channel, we design a scheme based on Superposition Coding (SC) which maximizes the achievable sum-rate under a Proportional Fairness (PF) constraint. Unlike most relaying schemes where users are allocated orthogonally, our scheme...

Packet switching in connection-oriented networks that may have multiple parallel links between pairs of switches is considered. An e cient packet-scheduling algorithm that guarantees a deterministic quality of service to connections with real-time constraints is proposed { this algorithm is a generalization of some recent multiprocessor scheduling algorithms, and o ers realtime performance guar...

The main objective was to investigate the intra- and intertester reliability of a simple screening tool assessing errors in exercise execution by visual observation. 38 participants with no previous resistance exercise experience practiced for two weeks four typical upper limb exercises using elastic tubing. At 2-week follow-up, the participants were invited for a test-retest assessment on erro...

No systematic study discusses the evolution of fair and equitable benefit-sharing across various areas of international law (environment, human rights, oceans), as well as at different levels of regulation (regional and national laws and guidelines, private law contracts, transboundary codes of conduct, customary laws of indigenous peoples and local communities). This article explores the usefu...

BACKGROUND The assessment of personality disorder is currently inaccurate, largely unreliable, frequently wrong and in need of improvement. AIMS To describe the errors inherent in the current systems and to indicate recent ways of improving personality assessment. METHOD Historical review, description of recent developments, including temporal stability, and of studies using document-derive...

A class of arity-monotonic aggregation operators, called impact functions, is proposed. This family of operators forms a theoretical framework for the so-called Producer Assessment Problem, which includes the scientometric task of fair and objective assessment of scientists using the number of citations received by their publications. The impact function output values are analyzed under right-c...

BACKGROUND/AIM Color matching in prosthodontic therapy is a very important task because it influences the esthetic value of dental restorations. Visual shade matching represents the most frequently applied method in clinical practice. Instrumental measurements provide objective and quantified data in color assessment of natural teeth and restorations. In instrumental shade analysis, the goal is...