Search results

Filter

Filetype

Your search for "*" yielded 532564 hits

Material forces in computational single-slip crystal-plasticity

In this contribution, we elaborate the material force method with application to standard dissipative materials, in particular crystal-(elasto)plasticity. It thereby turns out that material heterogeneities caused by the gradient of the corresponding slip parameters induce additional material volume forces. As a result, we observe that these forces contribute to computations of typical boundary val

Chemical and Morphological Characterisation of Aerosol Particles in the Tropopause Region

Popular Abstract in Swedish Små partiklar i form av vätska eller fast material mellan 0.001 till 100 µm i diameter, kan sväva i luften och kallas då aerosolpartiklar. De påverkar direkt på klimatet genom att reflektera solstrålar ut till rymden. Detta gör att vi får ett kallare klimat. Indirekt kan de påverka klimatet genom att verka som kondensationskärnor vid molnbildning. Med detta påverkar de The aim of this work was to study atmospheric aerosols, focusing on the chemical composition, the morphology and the origin of the aerosol in the upper troposphere and lowermost stratosphere. An aerosol sampler was developed for this purpose. A new method for quantitative analysis of the major components of the aerosol, i.e. C, N and O was developed, and methodologies for single-particle analysis

Near BER optimal partial response codes

Partial response signaling (PRS) codes with maximal minimum Euclidean distance have previously been found by linear programming. These perform very well in the narrowband-high energy region, but they were not optimized for minimal bit error rate (BER), so they are only optimal in the limit of infinite signal to noise ratio. Here we search for codes that perform better for more practical signal to

SOFC Modeling Considering Internal Reforming by a Global Kinetics Approach

Fuel cells (FCs) are promising for future energy systems, since they are energy efficient and fuel can be produced locally. When hydrogen is used as fuel, there are no emissions of greenhouse gases. In this study a two dimensional CFD (COMSOL Multiphysics) is employed to study the effect from porous material surface area ratio on reforming reaction rates and gas species distributions for an anode-

The Design of an Energy Efficient Highly Glazed Office Building

Many modern office buildings have highly glazed facades. Their energy efficiency and indoor climate is, however, being questioned. Therefore, when a modern office building (new construction) with larger glazing areas was planned, an investigation was carried out to determine the possibilities to: - efficiently use the increased access to daylight and thereby reduce the use of electricity for light

Exploring determinant factors for effective end-of-life vehicle policy: experiences from European end-of-life vehicle systems

Abstract in UndeterminedVehicles, symbolic goods of modern society, cause serious environmental impact in their endof-life phase owing to present end-of-life treatment practice and abandonment in nature. Theenormous volume of vehicle waste, and accompanying environmental impacts, encourageseeking an environmentally effective policy solution to control the problem of end-of-lifevehicles. This thesi

Social Work Programmes in the Social Democratic Welfare Regime

Abstract in UndeterminedIn this article we examine the emergence of social worker training in the Nordic countries and discuss the possible effects that the social democratic welfare regime has had on such training. We also discuss the development in recent decades of the academisation of the training and the establishment of social work as a subject of research and teaching. The early history of