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Kvacksalvarna luras om nätberoende

Det talas även i forskningen om exempelvis “maladaptivt” eller “problematiskt” användande av exempelvis datorspel eller internet. Men de studier som gjorts är rätt ense om att det inte är nätet som är problemet. Datar man så mycket att man inte längre sover, äter eller tar hand om sig själv är det förstås ett bekymmer. Men internet är då en del av symptomen på något annat.

A 1.8-GHz monolithic CMOS VCO tuned by an inductive varactor

A 1.8-GHz CMOS VCO is presented, employing a monolithic transformer as an inductance with voltage-controlled value. The design was implemented in a standard digital 0.6 μm, 2-metal CMOS process and exhibits a 10% tuning range with a 2.7 V supply voltage and a 9 mA supply current. Phase noise measurements show a worst-case phase noise of about -112 dBc/Hz at 3 MHz offset from the carrier

Verification of Governor Response During Normal Operation

This paper describes one approach to verification of governor response during normal operation. It is based on field tests carried out in four hydro power plants in the Sweden. The experiments were carried out in September 1976 but have not been published internationally until now. Additional analysis and simulations were carried out during the preparation of this paper in July 2002.

Carbon stocks and fluxes in a young Siberian larch (Larix sibirica) plantation in Iceland

The understanding of how forests function with respect to carbon (C) balance and its interaction with the climate system is a fundamental question in climate change research. Another important question is how large the sink for CO2 is in northern forests and how it varies with forest type, management, stand age and with external factors, such as climate variability. According to the Kyoto Protocol

Rehabiliteringsteknisk forskning

Föreliggande artikel söker presentera det vida området (re)habiliterings-teknisk forskning. Strukturen är allmän, men exemplen är många. Flertalet är hämtade från CERTEC, Centrum för Rehabiliteringsteknik, inom Tekniska Högskolan i Lund, där alla författarna är verksamma: Bodil Jönsson, universitetslektor och forskningsledare, Håkan Eftring, tekn lic och forskarstuderande inom robotteknik, Charlot

Thermodynamical and biological aspects of laser-induced heat treatment in medicine

Abstract in UndeterminedHeat has for long been utilised as a therapeutic tool in medicine. Tumour diseases and vascular malformations can be treated by elevating the temperature to cytotoxic levels. Laser-induced heat treatment relies on the conversion into heat of light absorbed in the tissue. Mathematical models were used to calculate the light absorption distribution and the subsequent temperat