Due to asymptotic freedom, QCD is guaranteed to be accessible to perturbative methods at asymptotically high temperatures. However, in 1979 Linde has pointed out the existence of an " infrared wall " , beyond which an infinite number of Feyn-man diagrams contribute. Following a proposal by Braaten and Nieto, it is shown explicitly how the limits to computability that this infrared problem poses...

We compare the performance of ve algorithms for vector quan-tisation and clustering analysis: the Self-Organising Map (SOM) and Learning Vector Quantization (LVQ) algorithms of Kohonen, the Linde-Buzo-Gray (LBG) algorithm, the MultiLayer Perceptron (MLP) and the GMM/EM algorithm for Gaussian Mixture Models (GMM). We propose that the GMM/EM provides a better representation of the speech space an...

This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes managed objects to configure and/or monitor Multiprotocol Label Switching Layer-3 Virtual Private Networks on a Multiprotocol Label Switching (MPLS) Label Switching Router (LSR) supporting this feature. Nadeau & van Der Linde Stand...

We study the dynamics of topological defects in the context of “topological inflation” proposed by Vilenkin and Linde independently. Analysing the time evolution of planar domain walls and of global monopoles, we find that the defects undergo inflationary expansion if η > ∼ 0.33mP l, where η is the vacuum expectation value of the Higgs field and mP l is the Planck mass. This result confirms the...

Cation exchange capacity (CEC) is an important characteristic of zeolites, especially when they are used as adsorbents in the aqueous system. However, no international standard method exists for the determination of CEC of zeolites. We determined CEC of Linde-type A and Na-P1 type zeolites at various pH (4 to 10) with a simple method, where Na+-saturated zeolites were prepared, and then various...

This paper examines wage determination among union and nonunion truck drivers using the 96 monthly Current Population Surveys for 1983-90. Union density in the previously regulated for-hire sector of the trucking industry fell from about 60 percent during the regulatory period of the 1970s to about 25 percent by 1990. Union log wage premiums fell from 0.40 in the 1970s to 0.30 or below in the 1...

The possibility of the creation of an open universe within the context of the inflationary scenario [1–4] is intriguing in that it enriches predictions of inflationary cosmology and that the horizon problem and the flatness problem can be solved separately within the inflationary paradigm. The basic idea is that a symmetric bubble nucleates in de Sitter space [5,1] and its interior undergoes a ...

We propose an efficient image-coding scheme based on vector quantization (VQ). Typically, image qualities of the compressed images by using VQ are restricted by the codebook used. To provide better image qualities of the compressed images while keeping low bit rates, encoding the geometric transformed image block is associated with VQ. To cut down the bit rates, the index table is further proce...