Trellis quantization is a finite state machine based method for data compression. It is mainly applied to quantizing noise-like sources. In this thesis new trellis codes suitable for low rate quantization are derived. Rate-distortion theory predicts source coding performance, but unfortunately provides only limited insight in how to construct good codes. In general, good trellis source codes combi

Charles Chaplin discussed in his films from the late 1930s and early 1940s modernity and ideology. With examples from Modern Times, The Great Dictator and Monsieuer Verdoux, I discuss different interpretations and some reactions to these films.

Popular Abstract in Swedish Grupp A streptokocker (GAS) ger upphov till infektioner lokaliserade till svalg och hud såsom akut pharyngotonsillit (halsfluss), impetigo (svinkoppor), erysipelas (rosfeber) men även till invasiva (djupa) infektioner med allvarlig prognos, speciellt scarlatina (scharlakansfeber), puerperalfeber (barnsängsfeber), nekrotiserande fasciit och andra mjukdelsinfektioner samtGroup A streptococci (GAS) cause throat and skin infections, severe invasive diseases as well as the non-suppurative complications acute rheumatic fever and glomerulonephritis. GAS have retained susceptibility to betalactam drugs, but resistance to alternative antibiotics is of concern. In a large Iranian survey the carrier rates among symptom-free children and those with pharyngotonsillitis were

Popular Abstract in Swedish Laddade partiklar är kända för att sända ut ljus när de rör sig i en krökt bana. Detta ljus kallas synkrotronljus och upptäcktes i mitten av 1900-talet. Sedan dess har det använts i forskning inom kemi, biologi, medicin och materialvetenskap. Utveckling av speciella maskiner för att producera synkrotronljus blev nödvändig för att fortsätta att tillgodose behoven inom deTo ensure the beam with an ultralow emittance and high current the possible effects deteriorating the beam stability must be investigated. When ultrarelativistic particles travel in the vacuum chamber they induce electromagnetic fields which can act back on them and the following particles. The interaction of the beam with the surrounding environment can be described by wakefields in time domain a

We give a proof of the Nirenberg-Treves conjecture: that local solvability of principal type pseudo-differential operators is equivalent to condition (Psi). This condition rules out sign changes from - to + of the imaginary part of the principal symbol along the oriented bicharacteristics of the real part. We obtain local solvability by proving a localizable a priori estimate for the adjoint opera

On a software development project many people collaborate to build a product contributing different pieces of the final product. Often people on a development team will work in parallel, either on different parts or on the same parts of the product, and follow processes to co-ordinate their work with other people on the team. When teams are distributed this co-ordination becomes more difficult sin

The paper suggests a method for motion generating and stabilization with application to dynamical models for underactuated ships.

Simulation tools are used to a wide extent in the product development process today, both to obtain better products and to reduce the development time required. Anisotropic materials are utilized in many engineering applications. Material models for materials of these types are needed in order to obtain accurate results from the simulations undertaken. In the thesis, a constitutive framework for

The proper handling of alarms is crucial to any automated process control. In practice, many alarms are only distractive and do not represent a fault situation. In an ongoing project a computerized tool is applied, that aims to remove such nuisance alarms, a so-called alarm cleanup. This is a general, systematic approach that takes advantage of the control system's built-in functions, and is a fir

The present thesis analyzes the reform of congregational singing in Livonia and Estonia in the first half of the 19th century. In this process the writings on the aesthetics of the congregational singing of a German pastor Johann Leberecht Ehregott Punschel (1778–1849) active in Livonia, and a chorale book (1839) that he edited occupied the central place. Punschel’s activities are directly associa