Detecting small signals with a comparator demands that the total voltage offset is lower than the actual signal. The total offset includes the voltage offset in the comparator and the voltage offset that is created by the offset currents that flows thru the load at the comparators input. The goal with this comparator that has been developed has been that it will have a total voltage offset at maximum 500 uV. The comparator does not need to be extremely fast or does not need to operate in a big frequency area. To have all the flexibility that is needed a full custom technique is used.

Denna studie syftar till att undersöka huruvida arbetsmotivationen skiljer sig mellan generation Y och tidigare generationer i den svenska IT-branschen. Studien vilar på en teoretisk grund bestående av tre välkända teorier inom arbetsmotivation; Herzbergs tvåfaktorteori, Self-Determination Theory samt Job Characteristics Model. För att kunna besvara studiens forskningsfråga ?Hur kan belöningssystem utformas för att ta hänsyn till fler anställda från generation Y i den svenska IT-branschen?? genomfördes en semistrukturerad intervju med en HR-chef samt en enkätundersökning bland anställda på IT-företaget Evry. Resultatet av studien visar att det finns vissa skillnader i arbetsmotivationen mellan generation Y och tidigare generationer vilket kan motivera till förändringar i hur man arbetar med belöningar när en allt större del av arbetskraften utgörs av generation Y. En viktig skillnad som framkom är att medarbetare från generation Y uppskattar feedback mer än äldre medarbetare, oavsett varifrån i organisationen feedbacken kommer ifrån. Studien fann även att monetära belöningar kan ha en stark negativ inverkan på arbetsmotivationen, men att de under vissa omständigheter kan vara positiva och ibland även nödvändiga.

This paper is to identify and analyze a new trend which we believehas taken off, based on qualitative interviews and analysis of three productions which we have been involved in during a practiceperiod of two months with a production company in Stockholm. This essay intends to define this trend as an organic formation of digital material and to identify the key characteristics which form the basis of how to create a production of this nature..

The forest industry is one of the most important industry branches in Sweden. Since the demand of high precision wood deliveries has increased, the demand on a well constructed forest road net also has increased. A good road net gives the wood-supplier competition advantages and also increases its service level towards its customers, lumber-mills and pulp-mills. In some parts of Norrbotten, the road net is still insufficient and not yet built out enough, and that is why it is important to know how to act and where to improve the road net in these areas. The purpose of this thesis was to create a work-model for long term road planning in areas with no road net or a not yet complete road net. The model has been created in an ArcGis environment, where a long chain of tools has been tied together with the program ?Model builder?.

This report examines the prerequisites for LEDs to replace other technologies indifferent applications. How does the different technologies for light generationwork and what are the advantages and disadvantages? The various technologieslimitations and characteristics provides the opportunities for the LEDs.This report describes a test-construction built to examine what practical arrangementscan be built with modern light emitting diodes, in order to showsome of the possibilities. The construction consists of three different applications,a high power lamp based on cold white LEDs, one based on warm whiteLEDs for the evaluation of the light characteristics and a RGB-LED based lampable to mix any colors quickly and seamlessly. The test construction also containsthe essential peripherals including control-electronics, optics and a custombuilt watercooling solution.The potential for LEDs is huge but it is complicated to build LED based applicationsdue to the limitations which mainly includes the electronics and theneccesary cooling.

Undersökningen ämnade se vilka fördelar och nackdelar som finns med animerade instruktioner jämfört med bildinstruktioner. För att göra detta så fick ett antal personer testa att vika origami med hjälp av antingen bildinstruktioner eller animerade instruktioner. Resultatet baserades på aspekterna tid, resultat samt utveckling. Undersökningen visade att animerade instruktioner hade mycket högre läsbarhet än bildinstruktioner men att det var svårt att se huruvida personer blev bättre på att vika origami..

This study is conducted with a focus on managers and its different forms as found in a nation wide Swedish bedroom specialist-organisation, Sängjätten. Leadership is perceived in many forms and depends on a large variety of factors within and outside the organisation. One of these factors is ownership and the characteristics these imply on the forms in which the manager works. Within the studied organisation there were two distinctive forms of ownership regarding to the stores we studied; such as franchising compared to the franchiser owned through a national headquarter, so-called ?self-proprietary stores?.

This thesis applies to a novel steam expander, one part of a steam engine system, a wobble plateengine. The piston in the expander moves axially with the outgoing rotating shaft and is locatedon a plate, why the engine type is called axial engine. When steam is applied to the plungers theplate wobbles creating a rotation on the shaft going thru the wobble plate. The steam expander issupposed to be used in exhaust gas recovery (bottoming cycle) applications and small scaleenergy production. The commissioner is Ranotor Utveckling AB.

This study investigates the main question ?How can the small, blue spring bulb genera Chionodoxa, Puschkinia and Scilla be used in Swedish outdoor settings, with main focus on the genus Scilla?? This is done by answering four sub-questions: Which of these Scilla-species are hardy in Sweden? Which are their characteristics and habitats? What does their history of application look like? What is commercially available today? The aim of the work has been to make a survey of hardy and available Scilla-species, their character-istics, field of application and history. The purpose is to create a tool in the work with geophytes in different outdoor settings in Sweden, and to contribute to the discussion of new fields of application for bulb plants, such as Chionodoxa, Puschkinia and Scilla. The questions are answered through literature studies and discus-sions with knowledgeable persons in the field. First, an investigation and a survey of Scilla-species hardy and commercially available in Sweden, will be presented, where information of appearance, charac-teristics, habitats, varieties and historical and present application of the species will be found. With this background, a discussion around all the questions, today?s use and also new fields of application, has been carried through. The conclusions made from this study, are that there are today 15 Scilla-species commercially available and hardy for the Swedish climate.

Mobbing är ett socialt problem. Därför skapades denna studie för att se om samband råder mellan mobbad, mobbare och personlighetsegenskaper. Dessutom gjordes en könsfördelning för att se om det råder några signifikanta skillnader i händelse, kön och personlighet. För att få svar på dessa syften ställdes frågorna: Hur ser mobbingen ut och vilka drabbas? Har kön och personlighetsegenskaper någon betydelse för om man blir mobbad eller utsätter andra för mobbing? Till hjälp användes en kvantitativ undersökningsmetod.

This paper is about transferring a feeling from a physical place to the Internet. The paper explores methods on how this transfer is done. Websites have a tendency to not portray the company behind it in a correct way. For companies with a distinct esthetic and work hard on their image and brand it is important that this hard work is portrayed correctly in every aspect. The problems this paper explores are: the importance of personas in a design process, methods of transferring a feeling from a physical place with design and how this can be tested, and using open-source content management systems in creating usable websites.

Vaccinology is an ever expanding field. As a member of the veterinary staff it is important to stay up to date with the continuous new scientific data and recommendations that affect the care that our companion animals receive at the veterinary clinic. This paper presents adverse vaccination reactions, their cause, risk factors and suggestions how we can minimize the risk of adverse vaccine events in dogs. Dog owners in Sweden were allowed to answer a questionnaire about adverse events following vaccination. Lethargy, edema and pruritus were among the most frequently seen adverse effects.

Intresset kring lågenergibyggnader blir allt större och så kallade passivhus, med god isolering, hög lufttäthet och värmeåtervinning, byggs i allt större utsträckning i Sverige och andra europeiska länder. Vissa frågetecken har dock uppkommit kring inomhusklimatet i husen och risken för både under- och övertemperaturer. En annan viktig aspekt är hur husens egenskaper påverkar värmelasterna och hur detta i sin tur påverkar energiförsörjningssystemet. I detta examensarbete undersöks dessa båda aspekter ? värmelastegenskaper och innetemperaturer ? i fyra likadana nybyggda flerbostadshus i Falkenberg.

In order to increase the independence in everyday life of the elderly population, we have developed a lifting aid for loading in the private car trunk. Independence from outside assistance affects self-esteem in a positive direction and can help increase the quality of life for a large group of individuals. As people age and experience changes in performance, it is important that aids and support is available, particularly to reduce the experience of aging and it?s increasing physical limitations. The aim was to develop a function prototype characterized by simplicity, which facilitates loading of the private cartrunk.The project was conducted at the request of Autoadapt AB, which is one of the leadingactors in car adaptations for individuals with disablilities.

The aim of this thesis is to ascertain how primary school teachers would like to improve their mathematics teaching. The central questions for this research are:In what ways do teachers want to improve their mathematics teaching?How do the teachers justify their statements?What main features can be distinguished out of the teachers answers?Three interviews and seven surveys have been used to collect information from a total of nine teachers, at one primary school. Teaching pupils from preschool to sixth grade. The results have been analysed, interpreted and discussed using a drama pedagogical perspective, inspired by a holistic approach to learning.