Suchergebnisse

The ICRC's shortwave telecommunications network — one of the most extensive non-governmental networks in the world — provides headquarters in Geneva and the delegations and sub-delegations in the field with an efficient and reliable means of communication. Entirely independent of commercial channels, the network enables radio contact to be maintained round-the-clock in situations where, more often than not, official channels have been disrupted or no longer function.

This major reference work provides a thorough and up-to-date survey and analysis of recent developments in the economics of telecommunications. The Handbook serves both as a source of reference and technical supplement for the field of telecommunications economics

This major reference work provides a thorough and up-to-date survey and analysis of recent developments in the economics of telecommunications. The Handbook serves both as a source of reference and technical supplement for the field of telecommunications economics

Network design and network synthesis have been the classical optimization problems in telecommunication for a long time. In the recent past, there have been many technological developments such as digitization of information, optical networks, Internet, and wireless networks. These developments have led to a series of new optimization problems. This manuscript gives an overview of the developments in solving both classical and modern telecom optimization problems. The classical (still actual) network design and synthesis problems are described with an emphasis on the latest developments on modelling and solving them. Mathematical theorems will be related to the models described. This includes Menger's disjoint paths theorem, the Ford–Fulkerson max‐flow‐min‐cut theorem, and also Gomory–Hu trees and the Okamura‐Seymour cut‐condition Finally, we describe recent optimization problems such as routing, wavelength assignment, and grooming in optical networks.

This project report defines network robustness and discusses capability indicators that could be used to analyze network robustness. Growing dependence on telecommunication networks and recent network outages have focused attention on network robustness. The National Communications System (NCS), a confederation of 23 Federal departments and agencies, has been concerned with network robustness since its formation in 1963. The NCS is developing and implementing systems and services that enhance the capability of the public switched networks to support critical Government communication requirements during times of crisis or emergency. Quantitative indicators of network robustness are needed to analyze the benefits of these enhancements. This project proposes a set of candidate capability indicators that could be used by the NCS in future analyses of the public switched networks with and without network enhancements. ; Master of Science