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Design of Robust PID Controllers with Constrained Control Signal Activity

This thesis presents a new method for design of PI and PID controllers with the level of control signal activity taken into consideration. The main reason why the D-part is often disabled in industrial control loops is because it leads to control signal sensitivity of measurement noise. A frequently varying control signal with too high amplitude will very likely lead to actuator wear and tear. For

Impact of glucose dosing regimens on modeling of glucose tolerance and β-cell function by intravenous glucose tolerance test in diet-induced obese mice.

Insulin sensitivity declines in overweight and obese individuals and, under normal conditions, insulin secretion adaptively increases which in healthy non-diabetic subjects maintains normal glycemia. This adaptation is best described by the disposition index derived from modeling of insulin and glucose data from an intravenous glucose tolerance testing (IVGTT). One caveat of the IVGTT is that basi

Continuum of care for frail elderly people: Design of a randomized controlled study of a multi-professional and multidimensional intervention targeting frail elderly people.

Background Frail elderly people need an integrated and coordinated care. The two-armed study "Continuum of care for frail elderly people" is a multi-professional and multidimensional intervention for frail community-dwelling elderly people. It was designed to evaluate whether the intervention programme for frail elderly people can reduce the number of visits to hospital, increase satisfaction wit

Kullabergs grottor : mellan istid och nutid, mellan humaniora och naturvetenskap

På Kullaberg finns ett drygt 30-tal kustnära grottor. Klippor och branta stup gör dem svåra att nå, från hav och från land. Hur har grottorna använts under de tusentals år som de funnits? Hur har bilden av grottmänniskor vuxit fram och har de överhuvudtaget funnits på Kullaberg? Arkeologiska utgrävningar och osteologiska djurbensanalyser från några av grottorna ger en del av svaren. Lokalhistoria

Global Optimization in Computer Vision: Convexity, Cuts and Approximation Algorithms

Computer vision is today a wide research area including topics like robot vision, image analysis, pattern recognition, medical imaging and geometric reconstruction problems. Over the past decades there has been a rapid development in understanding and modeling different computer vision applications. Even though much work has been devoted to modelling different problems, less work has been spent on

Changes in Prandial Glucagon Levels after 2-year Treatment with Vildagliptin or Glimepiride in Patients with Type 2 Diabetes Mellitus Inadequately Controlled with Metformin Monotherapy.

Objective - To determine if the dipeptidyl peptidase 4 inhibitor vildagliptin more effectively than the sulfonylurea glimepiride inhibits glucagon levels during meal. Research design and methods - Glucagon responses to a standard meal were measured at baseline and study endpoint (mean 1.8 years) in a trial evaluating add-on therapy to metformin with vildagliptin 50 mg bid compared to glimepiride u

Historical land-use and landscape change in southern Sweden and implications for present and future biodiversity

The two major aims of this study are (1) To test the performance of the Landscape Reconstruction Algorithm (LRA) to quantify past landscape changes using historical maps and related written sources, and (2) to use the LRA and map reconstructions for a better understanding of the origin of landscape diversity and the recent loss of species diversity. Southern Sweden, hemiboreal vegetation zone. The

Block copolymers combining semi-fluorinated poly(arylene ether) and sulfonated poly(arylene ether sulfone) segments for proton exchange membranes

A series of aromatic multiblock copolymers based on alternating segments of hydrophilic sulfonated polysulfone (PSU) and hydrophobic polyfluoroether (PFE) were prepared and characterized as proton exchange membranes. PSU precursor blocks were synthesized by polycondensation of dichlorodiphenylsulfone and resorcinol, and PFE precursor blocks were prepared by combining decafluorobiphenyl and isoprop

Particle Filtering and Optimal Control for Vehicles and Robots

This thesis covers areas within estimation and optimal control of vehicles, in particular four-wheeled vehicles. One topic is how to handle delayed and out-of-sequence measurements (OOSMs) in tracking systems. The motivation for this is that with technological development and exploitation of more sensors in tracking systems, OOSMs gain more significance in various applications. The thesis derives

Non-host volatile blend optimization for forest protection against the European Spruce Bark Beetle, Ips typographus

Conifer feeding bark beetles (Coleoptera, Curculionidae, Scolytinae) pose a serious economic threat to forest production. Volatiles released by non-host angiosperm plants (so called non-host volatiles, NHV) have been shown to reduce the risk of attack by many bark beetle species, including the European spruce bark beetle, Ips typographus. However, the most active blend for I. typographus, containi

Soldiers and Citizens: The concept of citizenship and the Anjala Covenant, 1788-1790

This article discusses the relationship between 'citizenship' and military duty during the late 18th century. This is illustrated by the legal conflict that erupted between the members of the Anjala Covenant and the Board of War in 1788. In a study of the records from the following court martial, the trial is viewed as a political discussion concerning the definition of the concept of the 'citizen

The European Grassland Butterfly Indicator: 1990–2011

This report presents the European Grassland Butterfly Indicator, based on national Butterfly Monitoring Schemes (BMS) in 19 countries across Europe, most of them in the European Union. The indicator shows that since 1990 till 2011 butterfly populations have declined by almost 50 %, indicating a dramatic loss of grassland biodiversity. This also means the situation has not improved since the first

Pancreaticojejunostomy: A valid operation in chronic pancreatitis?

Objective. Patients with chronic pancreatitis and intractable pain may be candidates for surgical intervention and various types of surgery have been described over time. The objective of this study was to describe long-term outcome following pancreaticojejunostomy in patients with chronic pancreatitis. Material and methods. Thirty-two patients with chronic pancreatitis underwent lateral pancreati

Vasovagal Syncope Related to Emotional Stress Predicts Coronary Events in Later Life

Background: The aim of the study was to assess whether history of vasovagal syncope (VVS) mediated by emotional (emotional VVS) or orthostatic stress (orthostatic VVS) is associated with an increased risk of cardiovascular (CV) events in later life. Methods: Retrospective analysis based on medical records of the consecutive 3,288 cardiologic outpatients (mean age, 61 +/- 12 years; 43% men). Result

Morphology of SBA-15-directed by association processes and surface energies.

We present a model that explains the morphology of mesoporous SBA-15 particles based on the relative surface energies of the defining faces. We also describe how the formation process influences the morphology and hence the surface energies. The model is compared to experimental observations, made primarily with scanning and transmission electron microscopy. Some materials were also examined in mo

Teamarbete på operationssal, organisationsdesign och patientsäkerhet

Teamarbete är vanligt inom hälso- och sjukvården. I mitt avhandlingsarbete har jag studerat teamarbete på operationssal med fokus på hur det praktiska arbetet faktiskt går till. Avhandlingens delstudier berör sådant som den praktiska användningen av formella rutiner (WHOs checklista för säker kirurgi), ledarskap på operationssal, olika professioners syn på det gemensamma arbetet, testning av en me

Does exogenous carbon extend the realized niche of canopy lichens? Evidence from sub-boreal forests in British Columbia

Foliose lichens with cyanobacterial bionts (bipartite and tripartite) form a distinct assemblage of epiphytes strongly associated with humid microclimatic conditions in inland British Columbia. Previous research showed that these cyano- and cephalolichen communities are disproportionately abundant and species-rich on conifer saplings beneath Populus compared to beneath other tree species. More rev

Measurement of tau polarization in W -> tau nu decays with the ATLAS detector in pp collisions at root s=7 TeV

In this paper, a measurement of tau polarization in W -> tau nu decays is presented. It is measured from the energies of the decay products in hadronic tau decays with a single final state charged particle. The data, corresponding to an integrated luminosity of 24 pb(-1), were collected by the ATLAS experiment at the Large Hadron Collider in 2010. The measured value of the tau polarization is P-ta