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Filtering and reconstruction of signals play a fundamental role in modern signal processing, telecommunications, and control theory and are used in numerous applications. The feedback principle is an important concept in control theory. Many different control strategies are based on the assumption that all internal states of the control object are available for feedback. In most cases, however, o
To link aesthetics to traffic safety, the field of environmental psychology was consid-ered. A new model of driving behaviour was developed, based on Lewin’s (1951) equation, B = f (P,E) and by employing Küllers’ (1991) model of the basic emotional process. The employed model B = f (R(Road), U(Users), A(Task), P(Person)), states that driving behaviour (B) is related to the physical environment (R)
The underpinning idea of extended producer responsibility rules has been to provide incentives for manufacturers to design products that are easy to recycle. However, current incentives for design for recycling are limited, due to the problems in assigning costs for collection and recycling of individual products to the relevant producers. An alternative way to promote design for recycling, or to
The purpose of the thesis is to increase understanding of the impact of financial institutions on regional growth. It helps to develop established concepts and perceptions on the impact of financial institutions on economic development in less well-functioning regions. Agglomeration theory is based on a general assumption of a reduced likelihood of economic cooperation through increased geographi
The organisational network of global environmental governance (GEG) mirrors the complexity of the planet's manifold and overlapping ecosystems. Bursting onto the international stage in the 1970s, environmental issues began to be addressed by a series of new international organisations, most of them affiliated with the United Nations. Some of them, such as the United Nations Environment Programme (
The aim of this work was to investigate and quantify the effects of system noise, nodule location, anatomical noise and anatomical background on the detection of lung nodules in different regions of the chest x-ray. Simulated lung nodules of diameter 10 mm but with varying detail contrast were randomly positioned in four different kinds of images: 1) clinical images collected with a 200 speed CR s
The acoustic emission that is detectable in the forming of complex thin part plates contains information about the quality of the pressed plates. The information can be used as process control and to filter out advanced thin plates with defects such as cracks. The article describes the results obtained in a try-out pressing process in special developed punch-die pairs with different pressing
The paper reviews a number of cellular neural network implementations on a field-programmable gate-array. It illustrates experimentally, how these implementations can be used to measure from images or to create dynamic, autonomous processes that facilitate measurements within topographic maps. Applications range from image understanding to robot navigation
After decades of development of information systems dedicated to health professionals, there is an increasing demand for personalized and non-hospital based care. An especially critical domain is cardiology: almost two third of cardiac deaths occur out of hospital, and victims do not survive long enough to benefit from in-hospital treatments. We need to reduce the time before treatment. But sympto
Popular Abstract in Swedish Denna avhandling behandlar statiska och dynamiska lagbeslutsproblem i både stokastiska och deterministiska ramverk. Lagproblemet är ett kooperativt spel, där ett antal spelare utgör ett lag som försöker optimera en given kostnad inducerad av omvärldens osäkerhet. Osäkerheten kan modelleras antingen som stokastisk, vilket ger upphov till det stokastiska lag problemet, elThis thesis considers static and dynamic team decision problems in both stochastic and deterministic settings. The team problem is a cooperative game, where a number of players make up a team that tries to optimize a given cost induced by the uncertainty of nature. The uncertainty is modeled as either stochastic, which gives the stochastic team problem, or modelled as deterministic where the team
Despite a lack of randomized trials, practice guidelines recommend that mild induced hypothermia be considered for comatose survivors of in-hospital cardiac arrest. This study describes the safety, feasibility, and outcomes of mild induced hypothermia treatment following in-hospital cardiac arrest.
Crystal plasticity models are often used to model the deformation behavior of polycrystalline materials. One major drawback with such models is that they are computationally very demanding. Adopting the common Taylor assumption requires calculation of the response of several hundreds of individual grains to obtain the stress in a single integration point in the overlying FEM structure. However, a
Brain-derived neurotrophic factor (BDNF) plays an important role in neuronal survival through activation of TrkB receptors. The trkB gene encodes a full-length receptor tyrosine kinase (TrkB.FL) and its truncated (T1/T2) isoforms. We investigated the changes in TrkB protein levels and signaling activity under excitotoxic conditions, which are characteristic of brain ischemia, traumatic brain injur
Using an animal model, the thesis explores how the initial ventilation of the lungs, and surfactant therapy, should best be managed after premature birth. Material and measurements: The studies were made in newborn lambs delivered by cesarean section. Spread of exogenous surfactant was analysed by mixing it with technetium-labelled macroaggregated human serum albumin and imaging the radioactivity
Popular Abstract in Swedish Varje vecka firar ett stort antal människor gudstjänst i Svenska kyrkan. Vid varje enskild gudstjänst bildas en sorts gemenskap. Men vad är egentligen en gudstjänstgemenskap, hur kan den förstås sociologiskt och teologiskt, vilken ställning har den i Svenska kyrkan och vilken ställning borde den ha? Gudstjänstgemenskaper i Svenska kyrkan i dag kan beskrivas som öppna, iThe dissertation examines the theoretical identity and formal status of a worship community within the Church of Sweden. Two theoretical perspectives form the basis of the investigation. The first is that the identity of the church cannot be reduced to an abstract idea of its essential nature, but what is said about the church must refer to the actual people who belong to it, especially those who
OBJECTIVES: To investigate the mechanisms of platelet kinetics in the SMART study that demonstrated excess mortality with CD4 guided episodic antiretroviral therapy (ART) (drug conservation [DC]) compared to continuous treatment (viral suppression [VS]). Follow up analyses of stored plasma samples demonstrated increased activation of both inflammatory and coagulation pathways after stopping ART.
Psychiatric, physical and biological aspects of posttraumatic stress disorder (PTSD) may be associated with dysfunctions in several cellular processes including nitric oxide (NO) production. NO is synthesized from arginine in a reaction carried out by NO synthase (NOS) enzymes. The recently introduced "global arginine bioavailability ratio" (GABR; ratio of arginine to [ornithine+ citrulline]) has
