Filtyp
We find the Shannon limit to bit error rate (BER) as a function of E_b/N_0 for linear coded modulations. Error performance of TCM and other schemes can be compared to this curve. As the bandwidth of the signals in Hz-s/data bit drops, capacity becomes sensitive to the stopband spectrum, and the limit moves strongly away from the BER of practical systems when the stopband rolloff is not severe.
In this paper, wave splitting technique is applied to a homogeneous Timoshenko beam. The purpose is to obtain a diagonal equation in terms of the split fields. These fields are calculated in the time domain from an appropriate set of boundary conditions. The fields along the beam are represented as a time convolution of Green functions with the excitation. The Green functions do not depend on the
A relation between the radiation resistance and the quasi-static polarizability, input capacitance, and input inductance for small electric dipole antennas is investigated. The relation follows from the forward scattering sum rule and sum rules for the input impedance together with resonance models for the partial realized gain and the reflection coefficient.
Lipids have been implicated in beta-cell stimulus-secretion coupling. In such a role, lipases in beta-cells would be required to generate lipid coupling factors. We have shown previously that glucose stimulates lipolysis in rodent islets. In addition, lipolysis and diacylglycerol lipase activity in islets are abolished by orlistat, an irreversible lipase inhibitor with a broad specificity for subs
The Euler equations consist of conservation laws and describe a fluid in motion without viscous forces and heat conduction. They are non-linear and the solutions are often discontinuous. Therefore proofs of convergence are hard to give and the existing results are lacking. A new concept are weakly imposed characteristic boundary conditions, where a priori given boundary data only enter the scheme
Problems: A driving force for change in business is the availability of enterprise resource planning systems (ERP-systems). They have a great impact on companies, not only because they constitute exceptionally large investments, but also because they hold the promise of integrating companies more closely, hence, they should be important in the pursuit of synergy. In SCA Packaging, the landscape of
A thermochromic ink is defined as an ink that exhibits colour changes depending on temperature. Thermochromic inks used in printing generally consist of an encapsulated three part system which includes a dye that changes colour, a compound that acts as a colour developer and a solvent. Due to the properties of the dye, the inks are always colourless above a certain temperature and coloured below a
The grocery market in Sweden is mainly divided between six different retailers who together have some 95% market share. The rest of the market is divided between thousands of different actors, selling groceries in other ways than the main retailers. This 5% market is interesting to investigate and the purpose is to identify the opportunities and barriers for those alternative food distributers. B
SLU (Sveriges Lantbruksuniversitet) har ett pågående projekt i ett område i södra Skåne sedan 1989 där de studerar hur bekämpningsmedel i åar korrelerar med vad som används på åkrarna. Ett nytt projekt, initierat av SGI (Statens Geotekniska Institut), kallat PEGASUS (PEsticide occurrence in Groundwater, A Study for sustainable Use in Skåne) har påbörjat en undersökning i samma område för att studeSLU (Swedish University of Agricultural Sciences) have had a project ongoing in a catchment area in southern Skåne for 20 years where they study how pesticide occurrence in surface waters correlate to the sort and amount used on the agricultural fields. A new project started by SGI (Swedish Geotechnical Institute) called PEGASUS (PEsticide occurrence in Groundwater, A Study for sustainable Use in
During the past decades there is a growing interest to include a cultural dimension in the debate on sustainable development. In this thesis I explore how culture, and more specifically the Flemish cultural sector, contributes to the transition to a sustainable society. By means of case studies, I examine how cultural organizations perceive their role in the transition process and how they transla
This thesis presents the work I did for the inclusive search for anomalous production of same charge lepton-pairs, originating from the collision point, at sqrt(s) = 8 TeV with the ATLAS detector at the LHC using the 2012 data. I optimized the selection criteria for isolated electrons and muons, calculated the so-called "fake factors" and "fake factor" systematic uncertainties
Wildfires pose a serious threat to communities in different parts of the world, mostly in regions with a warmer climate. Due to the increased urbanization next to the forest and climate change, they are currently an issue to be addressed also in other parts of the world. The purpose of this thesis is to provide a first step in the direction of creating a holistic Vulnerability Assessment Method (V
BvHb1.2 is a sugar beet haemoglobin (Hb) and a good candidate to be used as an artificial oxygen carrier (AOC). 19 mutants of BvHb1.2 were produced with random mutagenesis and expressed in BL-21 E. coli. The Hb content in whole cells was determined by using a refraction index modifier by mixing cell suspensions with 35% BSA. The two mutants (4 and 15) with the highest Hb production were purified u
Changes in the agricultural landscape have caused declines in bumblebee species richness and abundance. Semi-natural grasslands are key habitats for bumblebees in agricultural landscapes, and therefore it is important to understand which habitat characteristics promote species-rich bumblebee assemblages in these habitats. In this study, I investigate the importance of trees within semi-natural gra
