Speed of convergence of Newton-like iterations in an algebraic domain can be aaected heavily by the increasing cost of each step, so much so that a quadratically convergent algorithm with complex steps may be comparable to a slower one with simple steps. This note gives two examples: solving algebraic and rst-order ordinary diierential equations using the MACSYMA algebraic manipulation system, ...

The paper deals with the multilevel solution of elliptic partial differential equations (PDEs) in a finite element setting: uniform ellipticity of the PDE then goes with strict monotonicity of the derivative of a nonlinear convex functional. A Newton multigrid method is advocated, wherein linear residuals are evaluated within the multigrid method for the computation of the Newton corrections. T...

The smoothness-constrained least-squares method is widely used for two-dimensional (2D) and three-dimensional (3D) inversion of apparent resistivity data sets. The Gauss–Newton method that recalculates the Jacobian matrix of partial derivatives for all iterations is commonly used to solve the least-squares equation. The quasi-Newton method has also been used to reduce the computer time. In this...

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The Next Steps in Signaling (NSIS) working group is considering protocols for signaling information about a data flow along its path in the network. The NSIS suite of protocols is envisioned to support various signaling applications that need to install and/or manipulate such state in the network. Based on existing work on signaling requirements, this document proposes an architectural framewor...

In a multi-domain Internet that offers QoS guaranties for applications, there is the need of signalling among the domain entities that are responsible for the management of QoS. Because different domains have different network protocols and topologies, there is no solution that is able to signal these entities using an off path approach, and in particular that is able to interwork with the on p...

Depression in Parkinson's disease (PD) is frequently associated with executive deficits, which can influence nonliteral comprehension and lexical access. This study explores whether depressive symptoms in PD modulate verbal fluency and nonliteral language comprehension. Twelve individuals with PD without depressive symptoms, 13 with PD and depressive symptoms (PDDSs), and 13 healthy controls co...

BACKGROUND Although interventions for children with pervasive developmental disorders (PDD) have been the focus of research effort and evidence reviews in many Western countries, this evidence has not been assessed in the context of low- and middle-income (LAMI) countries especially in terms of the fit with different cultures and resources. METHOD As a part of the WHO MH-GAP project, we carri...

This specification describes the NSIS Signaling Layer Protocol (NSLP) for signaling Quality of Service (QoS) reservations in the Internet. It is in accordance with the framework and requirements developed in NSIS. Together with General Internet Signaling Transport (GIST), it provides functionality similar to RSVP and extends it. The QoS NSLP is independent of the underlying QoS specification or...