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The renormalization factor relating the bare to the renormalization group invariant quark masses is accurately calculated in quenched lattice QCD using a recursive finite-size technique. The result is presented in the form of a product of a universal factor times another factor, which depends on the details of the lattice theory but is easy to compute,(More)
A finite-size technique is employed to compute the normalization constant Z A of the isovector axial current in lattice QCD. The calculation is carried out in the quenched approximation for values of the bare gauge coupling g 0 ranging from 0 to 1. In the lattice action and the lattice expression for the axial current we include the counterterms required(More)
We determine the renormalization group invariant quark mass corresponding to the sum of the strange and the average light quark mass in the quenched approximation of QCD, using as essential input the mass of the K-mesons. In the continuum limit we find (M s + ˆ M)/F K = 0.874(29), which includes systematic errors. Translating this non-perturbative result(More)
Resource management offers Quality-of-Service reliability for time-critical continuous-media applications. Currently existing resource management systems provide only means to reserve resources starting with the reservation attempt and lasting for an unspecified duration. However, for several applications such as video conferencing the ability to reserve(More)
Continuous media such as audio and video require a certain quality of service (QoS) when transferred through computer networks. The selection of a network route for a particular media stream should hence take into account which route is best-suited for providing this QoS. QoSFinder is a method for QoS-based routing of multimedia streams. It is based on a(More)
Multimedia systems must be able to support a certain quality of service (QoS) to satisfy the stringent real-time performance requirements of their applications. HeiRAT, the Heidelberg Resource Administration Technique , is a comprehensive QoS management system that was designed and implemented in connection with a distributed multimedia platform for(More)
Digital and interactive TV systems will bring hundreds of TV program channels to the people. Then, the use of existing strategies for channel selection will fail: It is neither possible to select the program by " surfing " through the channels, nor by using printed program guides. This paper describes a new approach towards creation of a Personal Electronic(More)