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There are various circumstances where it is highly desirable for a Path Computation Client (PCC) to be able to dynamically and automatically discover a set of Path Computation Elements (PCEs), along with information that can be used by the PCC for PCE selection. When the PCE is a Label Switching Router (LSR) participating in the Interior Gateway Protocol(More)
For scalability purposes, a network may comprise multiple Interior Gateway Protocol (IGP) areas. An inter-area Traffic Engineered Label Switched Path (TE-LSP) is an LSP that transits through at least two IGP areas. In a multi-area network, topology visibility remains local to a given area, and a head-end Label Switching Router (LSR) cannot compute an(More)
We study the error to the discretization in time of a parabolic evolution equation by a single-step method or by a multistep method when the initial condition is not regular. Introduction. The problem we are considering is the parabolic evolution equation ( u'(t) + Au(t) = 0, 0<t<T, (*) I (u(0) = uo. Here, A is a linear operator, unbounded on Hubert space(More)
dry mass accumulation and allocation, and stable carbon isotope ratio (δC) of crude leaf fiber extracts was determined in six clones of Eucalyptus grandis W. Hill ex Maiden. grown for 16 months in field lysimeters in two soil water regimes. The relationships between δC and WUE calculated on the basis of leaf, harvestable stem, shoot and whole-plant dry mass(More)
This document defines a Historic Document for the Internet community. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a(More)
Differentiation of the Earth's mantle occurs principally through partial melting and extraction of basaltic melt. Among the mantle rocks occurring at the Earth's surface, harzburgites are widely considered as refractory mantle residues left after extraction of a basaltic component. In contrast, fertile lherzolites are generally regarded as pristine mantle,(More)
Priorto the 1991/92 season,Noodsberg usedacustomdesigned PC based system for pan boiling control. This system was abandoned in favour of a new supervisory control and data acquisition (SCADA) package, calledTurbolink, mainlybecause of a lackofavailablesupportfor theoldsystem. Thenewpackage has provedto be extremelypowerful and its scopeof application has(More)
Model-based speech enhancement methods, such as vector-Taylor series-based methods (VTS), share a common methodology: they estimate speech using the expected value of the clean speech given the noisy speech under a statistical model. We show that it may be better to use the expected value of the noise under the model and subtract it from the noisy(More)
The computation of one or a set of Traffic Engineering Label Switched Paths (TE LSPs) in MultiProtocol Label Switching (MPLS) and Generalized MPLS (GMPLS) networks is subject to a set of one or more specific optimization criteria, referred to as objective functions (e.g., minimum cost path, widest path, etc.). In the Path Computation Element (PCE)(More)