Filetype
Engine efficiency is often controlled in an indirect way through combustion timing control. This requires a priori knowledge of where to phase the combustion jiff different operating points and conditions. With cylinder individual efficiency estimation, control strategies aiming directly at fuel consumption optimization can be developed. This paper presents a method to estimate indicated efficienc
Popular Abstract in Swedish Denna avhandling berör metoder för hur beräkningsmekaniken kan förbättras med avseende på förbättrad och effektiv användning av verktyg och resurser. Den berör också ideér för hur verktyg i beräkningsmekanik skall kunna tillämpas i områden där dessa ej tidigare använts. Tre huvudområden har studerats: Effektiv och transparent tillgång till finita element applikationer, This work concern ideas and methods on how the context of computational mechanics can be improved for more efficient utilisation and extended into areas previously not familiar with or capable of using such tools. Three main areas were studied: Providing efficient and transparent access to finite element applications, development of methods for the visualisation of complex phenomena and improving
Knowledge concerning how the built environment should be designed to allow accessibility for persons with different disablements is not sufficiently applied in building design and facilities management. Many of the difficulties in traditional paper based design to communicate and validate the use of a building can be overcome by the new possibilities that are offered by object oriented 3D based ca
Popular Abstract in Swedish Avhandlingens syfte var att utveckla en checklista för bedömning av utemiljön i flerfamiljs bostadsområden. Fem experter inom arkitektur, landskapsarkitektur och stadsplanering medverkade i den första utvärderingen som omfattade sex bostadsområden i Lund. Utfallet validerades genom jämförelse med de boendes egna värderingar. Denna omfattade mer än 400 personer och analyThe primary goal of this thesis was to develop an Expert checklist for assessing and de-veloping outdoor residential environments. The checklist was utilized by 5 experts in the fields of architecture, landscape architecture, and urban planning who were all fa-miliar with the concept of architectural psychology. The checklist was validated against a Post-occupancy evaluations form (POE) that was d
Stability in presence of bounded uncertain time-varying time delays in the feedback loop of a system is studied. The stability problem is treated in the Integral Quadratic Constraint (IQC) framework. The stability criterion is formulated as frequency dependent linear matrix inequalities. The criterion can be equivalently formulated as a Semi-Definite Program (SDP) using Kalman-Yakubovich-Popov lem
Popular Abstract in Swedish Frågorna som partikelfysiker ställer är samma frågorna som folk har ställt under hela mänsklighetens tid på jorden, nämligen: Var kommer vi från? Vad är det som bygger upp det universum som vi ser? Hur håller allting ihop? Fysiker, historiens stora tänkare och hobbyfilosofen i pubben har alla funderat över de här frågorna (vissa mer än andra). Partikelfysiker försöker hAn introduction into the theory and experimental background of particle physics and the ATLAS detector is given. The transition radiation tracker (TRT) which is vital to the particle tracking and identification is then described giving particular creedence to the calibration. The automation of this calibration is explained. The second half of this thesis and the central part dwells on the analyses
The Ziegler-Nichols step response method is based on theidea of tuning controllers based on simple features of thestep response. In this paper this idea is investigated fromthe point of view of robust loop shaping. The results are:insight into the properties of PI and PID control andsimple tuning rules that give robust performance for processes with essentially monotone step responses.
Our goal is to present a mathematical model useful for distributed optimization of traffic routing in multi-domain Internet networks. In such environments each domain is operated autonomously and has access to limited information about the rest of the network. Our model reflects this through an appropriate problem decomposition with respect to individual domains. The decomposition aims at supporti
This paper derives a set of policy lessons for Portugal from the new fiscal framework including a fiscal policy council that gradually emerged in Sweden after the deep economic crisis of the early 1990s. By now, Swedish public finances stand out among the strongest in Europe. Recent Swedish macroeconomic performance has been impressive. As Sweden and Portugal are small open economies in the periph
In control theory there exist two convenient representations of a model, which are transfer functions and state-space matrices. However, structure in the transfer functions is not clearly seen in the state-space form, and on the other hand structure in the state-space form is not clearly seen in the transfer functions. The main reason for this is that Laplace transformation destroys most types of
A collection of original chapters focusing on young people and their political involvement, their use of the internet and other new media for learning the roles and practices of various forms ofcitizenship. The collection is analytically framed by the current dilemmas of democracy
Crosstalk is one of the main limiting factors in the data rates achievable by digital subscriber line (DSL) systems, and several algorithms have been proposed to mitigate this impairment. In this paper, we compare the capacity of binders under different crosstalk-mitigating techniques. When computing capacity, we also compare two different power constraints: either on the total power in the binder
In the autumn of 2011, the course “The City: Boundary Transgressions and Visual Expressions” was given for the first time. Formally placed at the Division of Art History and Visual Studies, the course is a collaboration with the Division of Social Anthropology and is directed towards students from a range of disciplines within the fields of the humanities and social sciences. The course includes
Boken innehåller praktiska övningar på moment inom olika delar av grammatiken: morfologi och ordklasser, ordbildning, syntax och språklig variation. Till övningarna finns facit med kommentarer. Kategoriseringarna och användningen av termer bygger på läroboken Svensk universitetsgrammatik för nybörjare, som i stort behandlar samma stoff. Övningsboken fungerar dock oberoende av läroboken, eftersom v
Det finns en lång tradition av att placera unga människor som begår brott på ungdomshem. Ute på landet, bortom storstadens förmodat destruktiva inflytande, ska de behandlas och anpassas till ett konventionellt liv. Ungdomarna är i högstadie- eller gymnasieåldern. De förväntas gå i skola, de har gått i skola och de vill gå i skola, åtminstone de flesta och i princip. Men skolarbetet har haft en ned
