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Machining processes in the industry of today are rarely performed using industrial robots. In the cases where robots are used, machining is often performed using position control with a conservative feed-rate, to avoid excessive process forces. There is a great benefit in controlling the process forces instead, so as to improve the time-efficiency by applying the maximum allowed force, and thus re

This longitudinal study draws on data from a larger project and examines how students' perceptions of their opportunities to influence their study environment may be enacted in approaches aimed at influencing their studies, and whether this changes during the course of their studies. Ten students from a 4.5-year Master's programme in Engineering were studied throughout their education by means of

In 1998 renewable energy sources supplied 56 ± 10 exajoules,or about 14 percent of world primary energy consumption. Thesupply was dominated by traditional biomass (38 ± 10 exajoules a year. Other major contributions came from large hydropower (9 exajoules a year) and from modern biomass (7 exajoules). The contribution of all other renewables — small hydropower, geothermal, wind, solar, and marine

Resistance of Concrete to Chloride Ingress sets out current understanding of chloride transport mechanisms, test methods and prediction models. It describes basic mechanisms and theories, and classifies the commonly used parameters and their units which expressing chloride and its transport properties in concrete. Laboratory test methods and in-field applicable test methods, including precision re

Designing multimodal interfaces is a complex process. One of the steps is to decide what kind of information should be presented for the adressee and in what medium the message should be conveyed. The starting point in this paper is information mapping and modality theory. The paper discusses the strenghts and the weaknesses of language and pictorial representations as presented in Bernsen (1994).

The HOO radical is a key intermediate in the atmosphere and is involved in a large number of reactions, including ozone loss cycles in the stratosphere and oxidation processes in the troposphere. This theses is a study of the HOO radical and its interactions with a number of small molecules that are present in the atmosphere. The HOO complexes were formed on the surface of growing argon matrices

Textbook meant for high schools.

Popular Abstract in Swedish Åldrandet innebär fysiologiska förändringar i många olika organ t.ex hjärta, kärl och nervsystem. Även ämnesomsättning och behov av olika näringsämnen förändras, vilket innebär en ökad risk att drabbas av olika sjukdomstillstånd. Detta påverkar även den åldrande hjärnan som kan drabbas av mer eller mindre omfattande förändringar, i såväl blodkärl som nervceller. Mindre The aim of this study was to evaluate the diagnostic potentials of four different biochemical markers, serum cobalamin, blood folate, plasma homocysteine and serum methylmalonic acid for diagnosis of cobalamin/folate deficiency in a psychogeriatric population. The second aim was to investigate the relationship between these markers and various clinical and functional parameters of the nervous syst