Sökresultat

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

Popular Abstract in Swedish Svetsning är en av de viktigaste tillämpningarna för robotar är inom tillverkningsindustrin. Normalt så programmeras roboten genom att operatören guidar manuellt robotarmen mellan de olika robotkoordinaterna. För att förbättra noggrannheten vid programmeringen kan man använda ett simuleringsverktyg, så kallat Computer Aided Robotics (CAR). Simulering kan även vara ett kThe objective of this thesis is to develop a simulation tool and a method by which robot trajectories, temperature histories, residual stresses and distortion can be analysed and optimized off-line. This was performed by integrating robot simulation software with finite element analysis software. A special interface was created which facilitated information exchange between the two software progra

The aim of this short paper is to present an ongoing joint research project, Human Factors in Air Navigation Services (HUFA), between the Swedish Civil Aviation Administration and Lund University. Results from the study will only be given very briefly. The project focuses on human and organizational factors and safety in air traffic control.

Popular Abstract in Swedish I den här avhandlingen studeras de elektriska egenskaperna hos nanotrådar av halvledarmaterial. En halvledare är ett mellanting av en ledare och en isolator, där den elektriska ledningsförmågan kan styras både genom att förorena materialet med andra ämnen och genom att påverka materialet med ett elektriskt fält. I princip all modern elektronik bygger på komponenter av hThis thesis focuses on electron transport in semiconductor InAs/InP and InSb nanowire quantum devices. However, first the temperature dependence of classical charge transport in InSb nanowire field-effect transistors, FETs, is characterized, using InAs nanowire FETs as a reference. We find that the InSb FETs, in the same way as InAs FETs, are n-type with good current saturation and low voltage ope

The adjudication process is one of society’s most intrusive forms of power. To maintain the general public’s confidence in the judiciary, it is crucial that the judicial activities are perceived as being conducted objectively and hence legitimately. Criminal trials have been subjected to scrutiny and criticism of various kinds in the media as well as in internal debates within the legal discipline

Popular Abstract in Swedish Denna avhandling har sin upprinnelse i utvecklingen av en metod för datorvisualis-ering och en metod för participativ ingenjörskonst. De två metoderna är intimt förknippade med varandra och benämns tillsammans “Computer Visualization in Participatory Engineering” (VIPE), något som på svenska skulle kunna benämnas ”Datorvisualisering för Participativ Ingenjörsvetenskap”.This thesis tells the initiation story of a computer visualization methodology and a participatory engineering methodology. The two methodologies are tightly coupled and for the purpose of this thesis, as a unit, named Computer Visualization in Par-ticipatory Engineering (VIPE). VIPE aims at a concurrent focus on technical and economical as well as ergonomic demands, by means of advancing communic

Vid förundersökningen påträffades en mindre stenkonstruktion i den norra delen av vallgraven. Denna torde utgöra resterna av den forna vallgravens nordöstra bastion. Vid schaktningarna och handgrävningen i gravens västra del tillvaratogs även ett stort lösfyndsmaterial. Detta bestod av allt ifrån klädnypor i plast till keramikskärvor från yngre romersk järnålder. De förhistoriska fynden kunde alla

Meso-tetra(hydroxyphenyl)chlorin (mTHPC) (international generic name Temoporfin) is a potent photosensitizer used for photodynamic therapy (PDT). In this study the pharmacokinetics of a systemically administered novel lipid formulation of Temoporfin in a murine tumor model has been investigated. Fluorescence spectroscopy measurements were performed at several time intervals following drug administ

We analyse recent experiments on momentum shearing interferometry of electron wave packets^1,2 by using an optical analogy with shearing interferometry for optical waves. This analogy offers a convenient point of view to discuss the capabilities and difficulties of this technique used to access the phase of electron wave packets.

Objectives: To explore reasons for institutionalization of people with dementia according to informal caregivers as well as variation in reasons between countries. Design: An explorative cross-sectional study was conducted in 8 European countries. Setting: Per country, a minimum of 3 long term care facilities, offering care and accommodation as a package, participated in this study. Participating

The base (BOP) and the top (TOP) of the world income pyramid represent the poor people and the people from developed countries, respectively. About two-fifths of the world population can be categorized as poor. Poverty is a trap because children born to poor parents are likely to grow up to be poor adults. In recent years, a poverty reduction approach that combines business development with povert

Two systems for measurements of absorption and scattering properties, based on picosecond-pulse lasers and single-photon counting detection, were characterized using a detailed protocol. The first system utilizes diode lasers at 660, 785, 910 and 974 nm as light sources. The second employs a Ti:sapphire and a mode-locked dye laser to produce tunable pulses in the range 610 - 1000 nm. Using solid t

Previously the effect of atmospheric dispersion on telescope performance has attracted only relatively little attention. This may be due to the fact that the dispersion effects have been evaluated in relation to the size of the diffraction limited resolution angle of current telescopes, or to seeing limited telescopes. However, since the resolution angle is inversely proportional to telescope diam

Popular Abstract in Swedish I december 1990 antog riksdagen i Sverige ett miljötillägg i skollagens s k portalparagraf: "Var och en som verkar inom skolan skall främja? respekt för vår gemensamma miljö." Alltså: Alla som verkar i skolan ska nu ta sig an den nya miljötematiken i samhället. Strax därefter tillsatte regeringen en ny läroplanskommitté med ett tydligt miljöuppdrag. I juni 1992, vid FNThis thesis explores the various influence processes that take place in connection with the dawn of a new theme - the environment - in today's society. Society has declared that schools, a place designed for the intentional influence of children and youths, shall utilise the new environmental theme in its practice. It focuses on the initiation process of the environmental theme in schools from the

Why do some children in the developing world choose to stay out of school? Is it mainly because poverty leaves them with no options or because schooling seems to offer them few benefits? The answers to these questions have profound policy implications. An empirical input into this discussion is the extent to which schooling can actually be perceived as a profitable option in various countries and,

Popular Abstract in Swedish Vilken roll staten kan och bör spela för att få till stånd ekonomisk utveckling hör till den ekonomiska vetenskapens äldsta debatter. Trots detta har tidigare forskning ofta fokuserat på hur en rad statliga interventioner påverkar den statiska effektiviteten. Få studier har försökt studera hur statlig intervention och en aktiv näringspolitik påverkar så kallad dynamisk What role the state should and can play in bringing about economic development is one of the longest standing debates in the economic sciences. Yet, previous research has mostly focused on how a variety of industrial policies affect static efficiency. Few studies have tried to analyze how industrial policy and government intervention affects dynamic efficiency, i.e. an economy's ability to generat

Popular Abstract in Swedish Organisationssammanslagningar är vanligt förekommande inom såväl offentlig som privat verksamhet. Effekterna för de anställda och för organisationerna är beroende av hur integrationsprocessen förlöper. En korsbefruktning kan äga rum när idéer och arbetssätt möts efter sammanslagningen. Syftet med avhandlingen är att analysera integrationsprocessen och undersöka om den kMergers of organizations are a widespread phenomenon in the public as well as in the private sector. The individual and the organizational outcomes are dependent on the success of the integration process. During the integration after a merger, a cross-fertilization of ideas, working methods etc. is possible and could pave the way for creative processes. The aim of the present thesis is to analyze