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Determination of Characteristic Parameters of Human Postural Dynamics

Posture control performance was quantified in three variables (swiftness, stiffness, damping). Subjects were tested with a force platform recording body sway induced by vibrators attached to the calf muscles. Parameter estimation was made with identification of a transfer function representing the stabilized inverted pendulum. It is conjectured that the state feedback parameters identified are sui

Toroidal inductors in CMOS processes

This paper presents a toroidal inductor integrated in a standard 0.13 /spl mu/m CMOS process. A very simple /spl Pi/ model for low frequencies is derived from 1-port and 2-port measurements, and a decent matching with general theory is observed. The coil exhibits an inductance of 1.1nH up to 20GHz (physical limit for the measurement equipment) and a quality factor approaching 10 at 15GHz. No self-

Teachers developing a Scholarship of Teaching and Learning at a Faculty of Medicine

Many universities are actively promoting scholarly inquiry into teaching and learning to improve education. Strategies used may involve support for development projects, teaching awards and academies. The Faculty of Medicine, Lund University, Sweden, has developed a Teaching Academy with criteria for membership founded in Scholarship of Teaching and Learning (Kreber, 2002; Trigwell & Shale, 20

Antenna Array for a 24-GHz Automotive Radar with Dipole Antenna Element Patches

In this paper 3D electromagnetic simulations of an antenna array have been performed. The array is intended for automotive radar applications at 24 GHz. It is constructed from dipole antenna element patches, which are fed in the center by a differential signal. The dipole antenna element patches are simulated assuming a standard off the shelf substrate. They have a standing wave ratio less than 3

Merging Parton Showers and Matrix Elements

Popular Abstract in Swedish Denna avhandling handlar om modeller inom partikelfysik, vilka beskriver naturens minsta beståndsdelar. En atom består av en kärna och elektroner. Kärnan består av protoner och neutroner, vilka i sin tur består av kvarkar och gluoner. Dessa partiklar samt hela den flora av andra partiklar som bara går att skapa vid experiment är vad som studeras inom partikelfysiken. DThis thesis considers models for describing high energy particle collisions. Existing phenomonological models are modified and new implementations made in order to achive a better description of states with several hard jets. To predict final state hadrons, parton showers are used together with pheonomenological hadronization models. These models describe a wide range of observables, but have the