Fast S-Parameter TAN Model of n-Port Lumped Structures

S-parameter based macro model of distributed-lumped networks using Pade approximation

DesignCon 2006 Fast Time-Domain Simulation of 200+ Port S-Parameter Package Models

S-Parameters are quickly becoming the standard method in PCB SI analysis to describe packages, channels, and connectors. This paper will describe techniques for significantly improving the generation and transient simulation of typical s-parameter models and large (200+ port) s-parameter package models used for power distribution and simultaneous switching noise analysis. We show that direct re...

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

Watgis: a Gis–based Lumped Parameter Water Quality Model

A Geographic Information System (GIS)–based, lumped parameter water quality model was developed to estimate the spatial and temporal nitrogen–loading patterns for lower coastal plain watersheds in eastern North Carolina. The model uses a spatially distributed delivery ratio (DR) parameter to account for nitrogen retention or loss along a drainage network. Delivery ratios are calculated from tim...

Parameter sensitivity analysis of a lumped-parameter model of a chain of lymphangions in series.

Any disruption of the lymphatic system due to trauma or injury can lead to edema. There is no effective cure for lymphedema, partly because predictive knowledge of lymphatic system reactions to interventions is lacking. A well-developed model of the system could greatly improve our understanding of its function. Lymphangions, defined as the vessel segment between two valves, are the individual ...