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I here propose a modification of the English butterfly census method (Pollard 1977) for studies of large areas with a relatively low density of butterflies. The transect line should not be more than 10 m from any point in open terrain and open forests, but only 5 m from sunny edges and patches with a high density of flowers. The transect line is adjusted between visits to most intensively cover si
Popular Abstract in Swedish Kartering av primärproduktion i Västrafrikanska Sahel genom användning av satellitdata. I avhandlingen har utvecklats en Light Use Efficency (LUE) modell som medger kartering av bruttoprimärproduktionen (GPP) exemplifierad i ett område i Västafrikanska Sahel. Modellen utnyttjar satellitbaserad månatlig Normalised Difference Vegetation Index (NDVI) tillsammans med andraA light Use Efficiency (LUE) model is developed that allows the mapping of total growing season Gross Primary Production (GPP) for the West African Sahel, using the Normalized Difference Vegetation Index (NDVI) together with other data. Image quality may be poor in monthly NDVI maximum value composites as shown by an improved geostatistical noise estimation technique. Quality may be improved by ot
New measurements of radiative lifetimes of four 3d65s levelsin Fe II at about 10 eV are presented along with absolute oscillator strengths for twenty 4p-5s transitions involving the four levels. The experimental measurements are compared with two different sets oftheoretical calculations. The lines are of particular interest in the modeling of HLyalpha pumped fluorescence of Fe II in as
An alpha/beta barrel is predicted for the three-dimensional (3D) structure of Bacillus subtilis ferrochelatase. To arrive at this structure, the THREADER program was used to find possible homologous 3D structures and to predict the secondary structure for the ferrochelatase sequence. The secondary structure was fit by hand to the selected homologous 3D structure then the MODELLER program was used
A technique is presented here for evaluating the loss factor of a solid material element. This technique is commonly used in room acoustics to evaluate the reverberation time (RT) of rooms, and is therefore reviewed in this paper for applications in solid materials. The reverberation time is a quantity that describes the rate of decay of the sound level in the room, and is inversely proportional t
The development of biotechnological products is becoming more and more expensive. One type of protein attracting a great deal of attention in the biopharmaceutical industry is antibodies, which was used in this work. The cost of producing antibodies is, however, high, mainly due to the downstream processing, which constitutes 50–80% of the total cost. This work describes model-based methods to des
MIMO has been proposed as an extension to 3G and Wireless LANs. As an implementation scheme of MIMO systems, V-BLAST is suitable for the applications with very high data rates. The square root algorithm for V-BLAST detection is attractive to hardware implementations due to its low computational complexity and numerical stability. In this paper, the fixed-point implementation of the square root alg
A resultant-type identity for univariate polynomials is proved and used to characterise SAGBI bases of subalgebras generated by two polynomials. A new equivalent condition, expressed in terms of the degree of a field extension, for a pair of univariate polynomials to form a SAGBI basis is derived.
This study considers astrophysics, stellar and nebular astronomy in Sweden. Emphasis is on the role of scientific technologies and practice, and the emergence of a modern observational astronomy, supplanting classical astronomy as the most vital field of Swedish astronomy. The introduction of photography and spectroscopy is discussed, mainly focused on Nils Dunér. The mechanical nature of the pho
Background: The 39 item Parkinson's disease questionnaire (PDQ-39) is the most widely used patient reported rating scale in Parkinson's disease. However, several fundamental measurement assumptions necessary for confident use and interpretation of the eight PDQ-39 scales have not been fully addressed. Methods: Postal survey PDQ-39 data from 202 people with Parkinson's disease (54% men; mean age 70
Thesis Purpose: This thesis investigates users of crowdfunding platforms in order to further the insight into understanding what affects their motives and behaviour. The relationship between intrinsic and extrinsic motivation as well as peer influence is investigated. Theoretical Perspective: This study is grounded on the limited theories surrounding crowdfunding and crowdsourcing, as well as rele
This thesis is about the licensing system of the Creative Commons discussed from the perspective of the theory of the commons mostly as formulated by Elinor Ostrom. The work is started by describing the concepts and theory of common pool resources and regime of the commons for production and distribution of these resources. The main characteristics for successful traditional commons – efficiency,
Populärvetenskaplig sammanfattning: Conodonterna var en framgångsrik och diversifierad marin djurgrupp som levde från ungefär mellankambrium (~ 500 Ma) till slutet av trias (200 Ma). Från ett fåtal bevarade avtryck vet man att djuren var långsmala, endast några cm långa och hade fenor. Avtrycken är svårtolkade, men mycket tyder på att conodonterna var förhållandevis avancerade och kanske till och Elements from the Ordovician conodont genus Protopanderodus Lindström, 1971 have been investigated to provide a model of reconstruction of the oral apparatus of this genus. In total, 4202 elements from the only five species representing Protopanderodus in the Swedish Middle Ordovician conodont fauna were included in the study. Four of the species, P. rectus, P. robustus, P. graeai and P. parvibasi
The proportion of meals the Europeans eat outside their home steadily increases. We take coffee breaks at work, eat lunch in the office canteen, we order take-away, we go to cafés or pubs to spend time with our friends, we easily grab a snack in vending machines and we eat on airplanes and trains to just mention a few examples. Eating out is nowadays more of an everyday activity than a luxury even
Jordens havsnivå förändras ständigt och dessa förändringar kan ha olika orsaker: i ett längre geologiskt tidsperspektiv är det processer i jordens inre som påverkar havsnivån, men i ett kortare perspektiv spelar till exempel tillväxten och avsmältningen av inlandsisar stor roll. Under kvartärtiden har den sistnämnda processen varit den dominerande vad gäller att påverka havsnivåerna: vid istider hResults from an investigation of relative sea-level changes from c. 11,000 cal. yr BP to the present in the Tasiusaq area, Inner Bredefjord, southwest Greenland, are presented in this thesis. Isolation sequences from two small lakes have been identified using stratigraphic analyses, XRF-scanning, loss on ignition and macrofossil analyses. Macrofossil and bulk samples have been dated in order to e
