Swedish healthcare is facing a major challenge in the future caused byhigher needs for care, large staff redundancies and increased costs.Chronically ill people who belong to a large part of the care burden arealso expected to increase. To respond to the increased burden, severalcare units around Sweden have turned to the digitalsolution. Digital homemonitoring is a digital tool used in the care of the chronic illness. Thepurpose of this report is to investigate what experiences caregivers havewith digital home monitoring in the care of the chronically ill. The carework for the chronically ill is important because it affects the results of thechronically ill person's health condition. Data collection methods usedwere qualitative interviews with healthcare professionals and reportsfrom reliable sources. The theoretical framework is based on the theorymodel: The eHealth enhanced chronic care model (eCCM) which describesvarious components and how digital tools affect care for the chronicallyill.Results from the study show both positive and negative effectswhen using digital home monitoring. When there is a willingnessfrom patients to use the system, it contributes to a positive effect onthe state of health. Which lead to an indirectly increase of thecaregiver's experience of the tool. When a patient feels reluctant touse the system, the use has a negative effect on both the patientand the caregiver. Suggestions for further research are to dofurther research on digital home monitoring, but also focus on thenegative effects to find future solutions. / Den svenska sjukvården står inför en stor utmaning i framtiden somorsakas av högre behov av vård, stora personalavgångar och ökadekostnader. Kroniskt sjuka som tillhör en stor del av vårdbelastningenförväntas även öka. I ett försök att besvara den ökade belastningen harflera vårdenheter runtom i Sverige vänt sig mot den digitala lösningen.Digital hemmonitorering är ett digitalt verktyg som används vid vård avkroniskt sjuka. Syftet med denna rapport är att undersöka vilkaerfarenheter och upplevelser vårdgivare har med digital hemmonitoreringvid vård av kroniskt sjuka. Vårdarbetet för kroniskt sjuka är viktigteftersom det påverkar resultaten av kroniskt sjukas hälsotillstånd.Datainsamlingsmetoder som användes var kvalitativa intervjuer medvårdpersonal och rapporter från tillförlitliga källor. Det teoretiskaramverket bygger på teorimodellen The eHealth enhanced chronic caremodel (eCCM) som beskriver olika komponenter och hur digitala verktygpåverkar vård vid kroniskt sjuka.Resultat från studien visar både positiva och negativa effekter vidanvändningen av digital hemmonitorering. När det finns en vilja frånpatienter att använda systemet bidrar det till en positiv effekt påhälsotillståndet. Det ökar då indirekt vårdgivarens upplevelse avverktyget. När en patient känner motvilja till att använda systemet,påverkar användningen negativt för både patienten och vårdgivaren.Förslag till vidare forskning är att forska vidare på digital hemmonitorering, men fokusera även på de negativa effekterna för attfinna framtida lösningar.

Considering the unlikely core melt down scenario for a light water reactor (LWR) a possible failure mode of the reactor pressure vessel (RPV) and its failure time has to be investigated for a determination of the loadings on the containment. Worldwide several experiments have been performed accompanied with material properties evaluation, theoretical, and numerical work. At the Institute of Safety Research of the FZR a finite element model has been de-veloped simulating the thermal processes and the viscoplastic behaviour of the ves-sel wall. An advanced model for creep and material damage has been established and has been validated using experimental data. The thermal and the mechanical calculations are sequentially and recursively coupled. The model is capable of evalu-ating fracture time and fracture position of a vessel with an internally heated melt pool. The model was applied to pre- and post test calculations for the FOREVER test se-ries representing the lower head RPV of a PWR in the geometrical scale of 1:10. These experiments were performed at the Royal Institute of Technology in Stock-holm. The results of the calculations can be summarised as follows: # The creeping process is caused by the simultaneous presence of high tem-perature (>600 °C) and pressure (>1 MPa) # The hot focus region is the most endangered zone exhibiting the highest creep strain rates. # The exact level of temperature and pressure has an influence on the vessel failure time but not on the failure position # The failure time can be predicted with an uncertainty of 20 to 25%. This uncer-tainty is caused by the large scatter and the high temperature sensitivity of the viscoplastic properties of the RPV steel. # Contrary to the hot focus region, the lower centre of the vessel head exhibits a higher strength because of the lower temperatures in this zone. The lower part moves down without significant deformation. Therefore it can be assumed, that the vessel failure can be retarded or prevented by supporting this range. # The development of a gap between melt crust and vessel wall could not be proofed. First calculations for a PWR geometry were performed to work out differences and commonalities between prototypic scenarios and scaled experiments. The results of the FOREVER-experiments cannot be transferred directly to PWR geometry. The geometrical, mechanical and thermal relations cannot be scaled in the same way. Because of the significantly higher temperature level, a partial ablation of the vessel wall has to be to expected in the PWR scenario, which is not the case in the FOREVER tests. But nevertheless the FOREVER tests are the only integral in-vessel retention experiments up to now and they led to a number of important insights about the behaviour of a vessel under the loading of a melt pool and pressure.

Considering the unlikely core melt down scenario for a light water reactor (LWR) a possible failure mode of the reactor pressure vessel (RPV) and its failure time has to be investigated for a determination of the loadings on the containment. Worldwide several experiments have been performed accompanied with material properties evaluation, theoretical, and numerical work. At the Institute of Safety Research of the FZR a finite element model has been de-veloped simulating the thermal processes and the viscoplastic behaviour of the ves-sel wall. An advanced model for creep and material damage has been established and has been validated using experimental data. The thermal and the mechanical calculations are sequentially and recursively coupled. The model is capable of evalu-ating fracture time and fracture position of a vessel with an internally heated melt pool. The model was applied to pre- and post test calculations for the FOREVER test se-ries representing the lower head RPV of a PWR in the geometrical scale of 1:10. These experiments were performed at the Royal Institute of Technology in Stock-holm. The results of the calculations can be summarised as follows: # The creeping process is caused by the simultaneous presence of high tem-perature (>600 °C) and pressure (>1 MPa) # The hot focus region is the most endangered zone exhibiting the highest creep strain rates. # The exact level of temperature and pressure has an influence on the vessel failure time but not on the failure position # The failure time can be predicted with an uncertainty of 20 to 25%. This uncer-tainty is caused by the large scatter and the high temperature sensitivity of the viscoplastic properties of the RPV steel. # Contrary to the hot focus region, the lower centre of the vessel head exhibits a higher strength because of the lower temperatures in this zone. The lower part moves down without significant deformation. Therefore it can be assumed, that the vessel failure can be retarded or prevented by supporting this range. # The development of a gap between melt crust and vessel wall could not be proofed. First calculations for a PWR geometry were performed to work out differences and commonalities between prototypic scenarios and scaled experiments. The results of the FOREVER-experiments cannot be transferred directly to PWR geometry. The geometrical, mechanical and thermal relations cannot be scaled in the same way. Because of the significantly higher temperature level, a partial ablation of the vessel wall has to be to expected in the PWR scenario, which is not the case in the FOREVER tests. But nevertheless the FOREVER tests are the only integral in-vessel retention experiments up to now and they led to a number of important insights about the behaviour of a vessel under the loading of a melt pool and pressure.

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As the size of an adaptive antenna array grows, the system is able to resist interference signals of increasing bandwidth. This is a result of the transmit pattern gain increasing, which raises the target's return power, and a greater number of degrees of freedom. However, once the interference signal decorrelates completely from one channel to the next, increasing array size will cease to improve detection capability. The use of tapped delay-line processing to improve correlation between channels has been studied for smaller arrays with single element antennas, but previous analyses have not considereded larger systems that are partitioned into subarrays. This thesis quantifies the effect that subarrays have on performance, as measured by the interference bandwidth that can be handled, and explains how tapped delay-line processing can maintain the ability to detect targets in an environment with high bandwidth interference. The analysis begins by deriving equations to estimate the half-power bandwidth of an array with no taps. Then we find that a single delay with optimal spacing is sufficient to completely restore performance if the interference angle is known exactly. However, in practice, the tap spacing will never be optimal because this angle will not be known exactly, so further consideration is given to this non-ideal case and possible solutions for arbitrary interference scenarios are presented. Simulations indicate that systems with multiple taps have more tolerance to increasing interference bandwidth and unknown directions of arrival. Finally, the tradeoffs between ideal and practical configurations are explained and suggestions are given for the design of real-world systems.

The phenomenon of pairing in atomic and nuclear many-body systems gives rise to a great number of different physical properties of matter, from areas as seemingly diverse as the shape of stable nuclei to superconductivity in metals and superfluidity in neutron stars. With the experimental realisation of the long sought BCS-BEC crossover observed in trapped atomic gases - where it is possible to fine tune the s-wave scattering length a of a many-fermion system between a dilute, correlated BCS-like superfluid of Cooper pairs and a densely packed BEC of composite bosons - pairing problems in atomic physics have found renewed interest in recent years. Given the high precision techniques involved in producing these trapped gas condensates, we would like to employ a suitably accurate many-body method to study such systems, preferably one which goes beyond the simple mean-field picture.The Coupled Cluster Method (CCM) is a widely applied and highly successful ab initio method in the realm of quantum many-body physics and quantum chemistry, known to be capable of producing extremely accurate results for a wide variety of different many-body systems. It has not found many applications in pairing problems however, at least not in a general sense. Our aim, therefore, is to study various models of pairing using a variety of CCM techniques - we are interested in studying the generic features of pairing problems and in particular, we are especially interested in probing the collective modes of a system which exhibits the BCS-BEC crossover, in either the BCS or BEC limit. The CCM seems a rather good candidate for the job, given the high precision results it can produce.

This report is one of the first to examine how system methodology can be applied as a tool to facilitate a holistic view of fighter aircraft survivability. This is done through the application of a modified version of multi-agent influence diagrams (MAIDs), as an analytical tool of two generic one-on-one scenarios based on Robert E. Balls The Fundamentals of Aircraft Combat Survivability, Analysis and Design. The concept of survivability has been limited to susceptibility because this is where ECM, ECCM and ESM operate. The result: three influence diagrams for each scenario and a generic MAID developed for the first scenario. These should not be seen as an exact technical description of the interaction between threats and countermeasures, but as a pilot application of system methodology within the study area. Furthermore, the user validation indicates that the diagrams can convey the complexity of the interactions between threats and countermeasures through a graphical presentation. The diagrams led to a deeper discussion about which influences are important for survival. The conclusion is that MAID and systems methodology can serve as a tool to describe and help communicate the complex relationships between elements and influences that affect the aircraft's survivability between different actors, provided they are modelled correctly. / Denna rapport är en av de första som undersöker hur systemmetodik kan tillämpas som ett verktyg för att underlätta en holistisk syn på stridsflygplans överlevnadsförmåga. Detta görs genom tillämpningen av en modifierad version av multiagent influence diagrams (MAIDs) som ett analysverktyg av två generiska en-mot-en-scenarier baserade på Robert E. Balls The Fundamentals of Aircraft Combat Survivability, Analysis and Design. Begreppet överlevnadsförmåga har avgränsats till mottaglighet eftersom det är här ECM, ECCM och ESM verkar. Resultatet: tre influensdiagram för varje scenario och ett generisk MAID baserat på det första scenariot. Dessa ska inte ses som en exakt teknisk beskrivning av interaktionen mellan hot och motmedel, utan som en pilottillämpning av systemmetodik inom studieområdet. Vidare indikerar användarvalideringen att diagrammen kan förmedla komplexiteten i interaktionerna mellan hot och motmedel genom en grafisk presentation. Diagrammen ledde till en djupare diskussion om vilka influenser som är av vikt för överlevnad. Slutsatsen är att MAID och systemmetodik kan fungera som ett verktyg för att beskriva och hjälpa till att kommunicera de komplexa sambanden mellan element och influenser som påverkar flygplanens överlevnadsförmåga mellan olika aktörer. En förutsättning är dock att de modelleras på ett korrekt sätt.