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Quantum Kinetics of Transport and Gain in Quantum Cascade Lasers: Looking for the Essential Principles of Design

The complex interplay by tunneling and scattering in quantum cascade lasers is analyzed with nonequilibrium Green's functions. Data for a recently proposed simple structure based on only two wells per period is presented. This simple structure allows to visualize the relevance of the tunneling resonance very clearly. It is argued that a QCL design needs at least three levels per period, thus furth

Absolute Lineshifts as Signatures of Stellar Surface Convection (CD-ROM Directory: contribs/dravins)

Learning Objects and their implications on Learning: a case of developing the foundation for a new Knowledge Infrastructure

In an era of lifelong learning, empowerment of the learner becomes fundamental. Therefore ex-ploitation of the full potential of learning objects depends upon creation of an appropriate infra-structure to promote symmetrical control of inquiry. The learner needs to be empowered because learning is a discovery process and thus must be under his or her own control. In early stages of education it

The Invisibility of Children: papers presented at an international conference on anthropology and children May 1997

Omfångsfrågan kontra periodiseringsfrågan i näringsverksamhet

Studies of aerosol particle formation from various sources using ion and electron beam analytical techniques.

The thesis presents the results of studies of aerosol particle formation using ion and electron beam analytical techniques. The sources of aerosol particle formation studied are the following: 1. production of primary aerosol particles in the high Arctic region during summers 2. emission of ultrafine aerosol particles from wear on the road-tire interface 3. emission of aerosol particles from di

Filled Potato Dumplings - Kroppkakor.

Evaluative Aspects of a Reflective Summative Assessment

Air transport greenhouse gas emissions

Mahlerreceptionen - en värld av uppfattningar

Den svårfångade kvaliteten

A Decoupling Technique for Increasing the Port Isolation Between Two Closely Packed Antennas

Lysrörsbelysningens icke-visuella effekter - en fältstudie

Simnon : User's Guide for MS-DOS Computers : Version 1.0

Coupling elements for substructure modelling of lightweight multi-storey buildings

Abstract in UndeterminedAccurately modelling the dynamic behaviour of multi-storey buildings in wood requires the geometry involved to be represented in great detail, resulting in systems having many millions of degrees of freedom. Consequently, there is a need for model order reduction and the methodology of substructure modelling is employed here to create reduced models for analysis of low-freq

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Aktivitetsgrupp som behandlingsmetod: frigör okända resurser (del 1). ( Eng. Activity Group as a method of treatment: release of unknown resources)

Preaching to Pilgrims: Ad vincula sermons at Vadstena Abbey

A survey of form and content of fifteenth-century sermons preached to pilgrims at the Birgittine Abbey of Vadstena, Sweden

Sustainability of the Swedish Sugar Sector : Assessment Tool Development and Case Study Appraisal

This thesis contributes to the development of tools and methods for assessing sustainability and applies them to an assessment of the Swedish sugar production system. The thesis’ aims are to compile an overview of the existing approaches for assessing sustainability, to suggest a method(s) for structuring and analyzing complex sustainability issues, and to appraise sustainability impacts from Swed

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