The Extended Tree Knapsack Problem(ETKP) is a generalized version of the Tree Knapsack Problem where an arbitrary nonlinear traac-ow cost is imposed. This problem can be solved by the straightforward \bottom-up" approach with a time complexity of O(nH 2), where n is the number of nodes in the tree, and H is the knapsack capacity. In this paper, we show that if the traac-ow cost function is the ...

The intention of our research is to present a solution for the distribution of a portfolio of telecommunication services, such as high speed Internet access, local and long distance telephony, cable TV, and aggregated services, over the Hybrid Fiber Coax (HFC) infrastructure of a cable operator. For this purpose we have divided the logical network’s infrastructure in two well-defined areas. Fir...

This paper centres around an interdisciplinary research on the Atlantis-2 undersea fibre optic cable, seeking to plot deep entanglements between internet’s material infrastructure, colonial history, and submarine ruins. Through connecting interpreting a set of historical, archival, narrative elements Atlantis-2, this speculates genealogies telecommunication cabl...

The paper presents an analysis of shortand long-term changes in the QoS of intercontinental connections. First we will show that despite fast and numerous advances in physical layer, link layer, router capacity and new telecommunication cables deployment, QoS measures are hardly progressing in long-term (years) perspective. Transatlantic (North America – Europe) connections will be thoroughly a...

damping of a full-scale cable with a pair of passive–on magnetorheological (mr) dampers was tested. a cable of 215.58m long with the first mode frequency of 0.658hz was tensioned horizontally in cable prefabrication factory. two mr dampers were attached to the cable in an angle in the plane perpendicularly to the cable axis in 5m length from the cable anchorage. the applied voltage level was 0v...

The technology revolution lead by Internet and ever improving computing power has played pivotal role in justifying the sense of a global village perception. Managing and enabling technological growth is among the top priorities of the organizations today. To meet this priority, organizations must create reliable, secure and cost-effective infrastructures that enable business innovation. Techno...

Power substations in an urban area are interconnected by high voltage underground power cables, resulting also in interconnections of their earthing grids through cable metallic screens/sheaths. Most modern power cables with XLPE insulated core have metallic screens which are practically insulated from ground. These screens can only be (and usually are) grounded at cable ends and therefore do n...

This Recommendation describes the geometrical and transmission attributes of single-mode optical fibre and cable with chromatic dispersion and cutoff wavelength that are not shifted from the 1 310 nm wavelength region. Definitions and test methods are contained in a separate ITU-T G.650. Tables of recommended values for different sub-categories of this fibre type are provided to allow ease of r...