The problem of efficiency in the IT systems is now widely discussed. One of the factors affecting the performance of IT systems is implementation and maintaining a high level of security. In many cases the guaranteed security level is too high in relation to the real threats. The implementation and maintenance of this protection level is expensive in terms of both productivity and financial cos...

This paper investigates the problem of dynamic survivable lightpath provisioning against single node/link failures in optical mesh networks employing wavelength-division multiplexing (WDM). We unify various forms of segment protection into generalized segment protection (GSP). In GSP, the working path of a lightpath is divided into multiple overlapping working segments, each of which is protect...

Preconfigured protection cycles or “p-cycles” can attain high capacity efficiency and fast protection switching times when deployed in WDM mesh networks. We consider the survivability of p-cycles in presence of multiple failures which can occur in larger networks.

Development of new technologies for the efficient use of proteins of animal origin, apart from heat treatment in rendering facilities that was used to date, has become the primary goal of the integral waste management system. The emergence of bovine spongiform encephalopathy in Europe and in the World in the 1990s opened up new questions regarding medical safety and use of meat bone meal in the...

m g o d 0 m v s To the Editor: Antineoplastic agents of the anthracycline (ANT) group are commonly and effectively used in various forms of malignancies. Anthracyclines might lead to irreversible cardiomyopathy (CMP), despite their beneficial effects. A number of mechanisms, such as elevation in free superoxide anion radicals, apoptosis, and mitochondrial dysfunction have been implicated in ANT...

The major challenges in designing survivable schemes are how to allocate minimal amount of spare resources (e.g., bandwidth) using fast (e.g., polynomial-time) algorithms, and in case a failure occurs, to be able to quickly recover from it. All existing approaches invariably make tradeoffs. In this paper, we propose novel shared segment protection algorithms which make little or no compromise. ...