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In order to evaluate the success of simple heuristics we need to know more about how a relevant heuristic is chosen and how we learn which cues are relevant. These meta-abilities, we believe, are at the core of ecological rationality, rather than the individual heuristics.
Twenty-one boys (age range 5 months to 16 years) were followed during their stay at hospital. Total observation time was 120 h. Field notes were made immediately after each observation. These were then transcribed into a narrative text, which was analysed by content analysis. Six categories of needs were identified during non-threatening situations at the hospital: the need for activity, the need
A dynamic beam system loaded harmonically in the axial direction and constrained in the transverse direction is modelled using different theoretical descriptions. Results from an experimental set-up are compared to calculations using Bernoulli as well as Timoshenko beam theories. Some results from investigations of this beam system unveiling its chaotic nature have earlier been presented, but here
Different strategies for reducing emissions of nitrogen oxides and carbon dioxide from the Swedish transportation sector are evaluated by making scenarios for the year 2015, using a bottom-up approach. Methods for reducing emissions of carbon monoxide, hydrocarbons, and sulphur dioxide are discussed more briefly. The scenarios are based on official forecasts of future passenger and goods transport
Abstract in Danish Afhandlingens hovedproblemstillinger er: Hvilken betydning har det for danske socialarbejderes vurderinger og handlinger i børnefamiliearbejdet, at et barn og dets familie ikke er etniske danskere? Denne problemstilling undersøges gennem tre empiriske undersøgelser: Familieplejeundersøgelsen består af en journalundersøgelse af 44 anbragte etniske minoritetsbørns journaler samt The dissertation studies how social workers ensure continuity in relation to the individual child's background when placing and working with children of ethnic minority background in care. This is studied through 44 sets of case study notes from a foster-care association and interviews with 10 foster-care consultants. These two types of data are analysed through three perspectives: a continuity pe
This working paper on Tongan names for plants and animals is intended as a contribution to the documentation of environmental knowledge in one of the most traditional societies of Polynesia. The list contains over 1 400 folk taxa: seaweeds 18 names, terrestrial plants 801 names, marine invertebrates 203 names, terrestrial invertebrates 72 names, fishes 231 names, reptiles and amphibians 15 names,
Popular Abstract in Swedish Välfärd, säkerhet och fertilitetsnivån: En global analys, 1985 och 1995.Aims: This study aims to find an explanation for differentials in the level of fertility through the analysis of the recent data of seventy-eight developed and developing countries. The main approach adopted is the specification of a macroeconomic interdependent model testing hypotheses within an institutional point of view. Methods: This is a cross-sectional data analysis in a system of four equ
This article seeks to describe and understand relational interaction processes in project networks, and suggests that there is a connection between the characteristics of a project network and the type of interactions within it. We suggest that time, legitimacy and power structure determine the type of interaction processes that occur. Four case studies of service-producing project networks show t
The singlet ground and low-energy excited states of the benzene dimer in D-6h geometry are characterized using second order multireference perturbation theory (CASPT2). The counterpoise-corrected spectroscopic parameters of the benzene excimer are in quantitative agreement with experiment. The same method was used to compute a submanifold of the potential energy hypersurface of the first excited s
Estimates of viability as measured by vital staining with fluorescein diacetate (FDA) were carried out on freshly isolated and partially aged (16-h-old) B. vulgaris and H. vulgare mesophyll protoplasts following irradiation with UV-B. Damage to the photosynthetic system by UV-B was determined by delayed light emission (DLE). In the case of freshly isolated protoplasts Beta was .apprx. 30% more sus
It is shown that in water of finite depth, the surface profile eta of a periodic traveling wave uniquely determines the corresponding flow in the body of the fluid. This holds for rotational flow as long as the vorticity function gamma(psi) satisfies the condition gamma'(psi) max(xis an element ofR) eta(2)(x) < pi(2). This condition is also shown to be sharp.
Recension av Kerstin Arcadius, Museum på svenska. Länsmuseerna och kulturhistorien.
Popular Abstract in Swedish Fritidsaktiviteter bland personer med reumatoid artrit. Vad predikterar och hur mäter man? Fritidsaktiviteter ansågs redan i antikens Grekland leda till inre tillfredsställelse, mening och värde i livet. De genomfördes enbart för sin egen skull och utan tanke på belöning. I början av 1900-talet kunde fritidsaktiviteter endast genomföras av de personer som inte behövde Leisure Activities in Rheumatoid Arthritis. Associated Factors and Assessment. Leisure activities were considered to give intrinsic pleasure, meaning and value to life already in ancient Greek. It was also performed for its own sake and not by consideration of any external rewards. In the beginning of the 20th century leisure was only possible for wealthy people who could occupy themselves with n
Popular Abstract in Swedish Låg temperatur begränsar i stor utsträckning överlevnad och expansion av vegetation. Under senare år har samverkan mellan låg temperatur och hög instrålning, som leder till försämrad fotosynteseffektivitet, rönt stor uppmärksamhet. I denna avhandling tillämpas nya metoder för att relatera rumsliga variationer i temperatur och instrålning till fotosynteseffektivitet ochLow temperature has a large impact on the survival and distribution of plants. Interactive effects with high irradiance lead to cold-induced photoinhibition, which may impact on the establishment and growth of tree seedlings. In this thesis, novel approaches are applied for relating the spatial variability in low temperature and irradiance to photosynthetic performance and growth of tree seedlings
