Search results

Filter

Filetype

Your search for "*" yielded 530129 hits

The Meaning of Europe, a phenomenological study

How do individuals feel and think themselves on themselves? Our actual multicultural world offer us a unique, natural experiment for a detailed study of this problematic. We will use the Meaning Constitution Analysis methodology for planification of research as it is: 1. Oriented towards meaning, as it is constituted in/by the individual in his daily life activities; 2. Oriented towards a gatherin

The Theory of the Propagation of TEM-Pulses in Dispersive Bi-Isotropic Slabs

A survey of the theory of propagation of transient transverse electromagnetic waves in temporally dispersive, bi-isotropic slabs is given, and a novel wave splitting, which completely separates right-going and left-going waves in the dispersive medium, is proposed. The new approach leads to a simple scattering relation in terms of wave propagators and single-interface scattering operators only. Th

Sowing Forth - 2007 Certec turns 20

We celebrate Certec’s 20th birthday . . . . . . by giving you a book of 20 important ideas filled with pictures and text. Each idea is expressed in a succinct heading that sums up what we have learned over the years. The ideas also act as a complement to all the reports, website cover pages, brochures, lectures and annual reports. There are 30,000 documents at www.certec.lth.se that provide the b

A general power-series expansion method for scalar analysis of the guided modes in an optical fiber

A power-series expansion method for approximate analysis of the guided modes in a cylindrical, radially inhomogeneous dielectric waveguide is presented. The method is developed for a piece-wise polynominal permittivity profile. The solution of the scalar wave equation is constructed by a sequence of power-series expantions. Convergence is ensured and accuracy maintained by regulating the distance

Physical limitations on D/Q for antennas

In this paper, physical limitations on the directivity D and Q-factor Q are derived for antennas of arbitrary shape. The quotient D/Q is shown to be bounded from above by the antenna volume and certain shape coefficients in terms of the eigenvalues of the high-contrast polarizability dyadic. The theory is exemplified by numerical results for the half-wave antenna with astonishing agreement.

Utopi eller dystopi?

Robotar kan betraktas som ytterligare en i raden av tekniska innovationer inom äldreomsorgen, buren av förhoppningar om ökad effektivitet men med bibehållen livskvalitet i samband med ökade omsorgsbehov och möjligheten att bo kvar hemma. Diskursen är tidvis utopisk - löften om att hjälpa äldre människor att bli mer självförsörjande och självständiga med hjälp av robotar - och från ett mer dystopis

Investigating upstream versus downstream decision-making in software product management

Decision outcomes and their lead times are critical in product management, as the market success of a product may strongly depend on the both the decisions themselves and their timing in relation to the market and competitors. This paper presents an investigation of one particular industrial case study data set by comparing upstream scoping decisions with downstream change decision. The results in

Bacterial Adaptive Responses - Coping with Oxygen Limitation, Reactive Nitrogen Species and Disulfide Stress

Bacteria have a remarkable ability to adapt to different environments. When bacteria encounter stress that causes macromolecular damage in the cell, leading to a suboptimal performance of cell metabolism, they can elicit an adaptive response. In this thesis Bacillus subtilis is used as the primary model organism to study bacterial adaptation to oxygen limitation, reactive nitrogen species and disu