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Denna uppsats har som syfte att genom fyra utvalda tal av den framstående abolitionisten Frederick Douglass se hur, genom hans tal, en svart människas värde skildras i USA under tiden kring det amerikanska inbördeskriget och genom vilka retoriska medel han nådde fram med sitt budskap. För att få svar på frågeställningarna har denna uppsats använts sig av Renbergs retorikanalys som teori och metod.
The purpose of this thesis is to find out whether or not the Estonian stock market is developed enough for introduction of a market for standardized options on index and stocks. This will be conducted through comparing the stock market development in Estonia today with the corresponding situation in Denmark, Hungary and Norway at the time of their introduction of trade in standardized options. Our
Correct operation of real-time systems (RTS) is defined as producing correct results within given time constraints (deadlines). As RTS are becoming more susceptible to soft errors, employing fault-tolerant techniques is crucial. Rollback Recovery with Checkpointing (RRC) is an efficient fault-tolerant technique. However, RRC introduces a time overhead which depends on the number of checkpoints. Th
The complexity status of the minimum r-star cover problem for orthogonal polygons had been open for many years, until 2004 when Ch. Worman and J. M. Keil proved it to be polynomially tractable (Polygon decomposition and the orthogonal art gallery problem, IJCGA 17(2) (2007), 105-138). However, since their algorithm has (O) over tilde (n(17))-time complexity, where (O) over tilde (.) hides a polylo
In the search for the fully aligned 27(-) state in Nd-140 predicted by cranked Nilsson-Strutinsky calculations, new close-to-spherical high-spin states have been discovered. Both the close-to-spherical and the triaxial calculated states are in good agreement with the experimental results, supporting the existence of shape coexistence up to very high spins. Shell-model calculations using a newly de
Interest in biofuel use is growing in aviation, due to its potential for lower GHG lifecycle emissions and as a possible price competitive alternative to fossil fuels in the long-term (ATAG, 2012). While the use of biofuels in aviation is a new phenomenon, compared to the automotive industry, several actors from the industry and governments have been involved in various initiatives to research, te
This paper explores the intersection of new urban spaces and new modalities of ‘homelessness’ in Japanese cities. We argue that the recent social phenomenon of “net café refugees” (netto kafe nanmin – people who substitute ‘manga cafes’ for their domestic residence) is conditioned by new forms of leisure, information technology, social manners, and the longterm contraction of the Japanese domestic
The main purpose of this thesis is to describe different numerical methods for solving the time-dependent Schr¨odinger equation. We introduce and describe two different basis representations (spectral and pseudospectral). These basis representations are then used in the different methods we take up for discussion. We consider methods in which the Hamiltonian is constructed in a spectral basis and
(equation presented) The synthesis of α-substituted α,β-enones by a new metal iodide-promoted one-pot three-component reaction involving commercially available cyclopropyl ketones, aldehydes, and secondary amines followed by base treatment is described.
Starting from next year the technical feasibility of a direct seeding scheme at 30 and 13 nm will be studied at the Free-electron LASer in Hamburg (FLASH). During a major shutdown the SASE-FEL facility will be upgraded and it is planned to install in addition a high-harmonic generation (HHG) seed laser, a new chain of 10 m variable gap un-dulators and a dedicated commissioning beamline for photon
Solar energy is an important source of clean energy to combat climate change issues that motivate the establishment of solar farms. Establishing solar farms has been considered a proper alternative for energy production in countries like Mozambique, which need reliable and clean sources of energy for sustainable development. However, selecting proper sites for creating solar farms is a function of
Radon gas is the largest source of public exposure to naturally occurring radioactivity. However, radon is also a useful tracer for understanding atmospheric processes, assessing the accuracy of chemical transport models, and enabling integrated emissions estimates of greenhouse gases. A sound metrological system for low level atmospheric radon observations is therefore needed for the benefit of t
The evolution of whole-body endothermy occurred independently in dinosaurs and mammals and was associated with some of the most significant neurocognitive shifts in life's history. These included a 20-fold increase in neurons and the evolution of new brain structures, supporting similar functions in both lineages. We propose the endothermic brain hypothesis, which holds that elaborations in endoth
We present a summary of the commissioning and performance of the vacuum system of a 500-MeV booster synchrotron recently built at LNLS as part of a new injector for the LNLS light source. The main vacuum parameters of the synchrotron are pressure below 5×10-7Pa (lifetime of 1-2 hours), no in-situ baking, no cooling system, and a short recovery time after ventilation. All parts of the system are ma
This concert featured the world premiere of new music for serpent from the composers Orlando Bass, Henrik Denerin, Athena Corcoran-Tadd, and Jesse Ronneau (the latter also with live electronics). The concert opened with a performance of a 17th-century work from Girolamo Frescobaldi with Orlando Bass on harpsichord. There was also a visual presentation, illustrating the history of the serpent and b
Pythia8 is the only general purpose event generator able to produce complete fully exclusive hadronic final states in collisions involving heavy ions. The model that allows this is called Angantyr and will be discussed in this contribution. The contribution also discusses models based on interactions between strings in an extention of the Lund model that are able to describe some collective effect
We investigate stability issues for steady states of the spherically symmetric Einstein-Vlasov system numerically in Schwarzschild, maximal areal, and Eddington-Finkelstein coordinates. Across all coordinate systems we confirm the conjecture that the first binding energy maximum along a one-parameter family of steady states signals the onset of instability. Beyond this maximum perturbed solutions
