Active sensors are used a lot in the society and industry, for example to gain better control over processes or to get proximity sensing features in different products. Within industry there is great interest in developing safe automation products that can be controlled with high accuracy but still at a low cost.The goal of this project is to develop a prototype of a non-contact rangefinder that measures distance using infrared light. The sensor is to be used for various applications in industries with relatively high accuracy and be compact, but at a low cost. By implementing a rangefinder into a product, more accurate detections of an object?s presence can be done.In this project a new distance sensor, EPC600 from ESPROS, was used.

Full-field flash electroretinography is an electrodiagnostic method used to examine the function of retinal cells. Light stimulation of the eye elicits electrical potentials in the retina. By aid of a corneal electrode and a reference electrode close to the back of the eye, the electrical potentials can be recorded and presented as an electroretinogram (ERG). ERGs driven by mainly one type of cones can be used to examine the function of a single cone class. In human beings, studies have shown the cone class sensitive to light of short wavelengths, the S-cones, to be more vulnerable to acquired damage than the other cone classes (Daley et al., 1987; Gouras et al., 1993; Greenstein et al., 1989). Dogs have two cone classes, S-cones, and M/L-cones (most sensitive to medium to long wavelengths).

Uppsatsen behandlar belysningsarmaturer inom LED-segmentet. Uppsatsen behandlar i synnerhet varför ljuskällan i LED-belysningsarmaturer oftast konstrueras så att ljuskällorna inte är utbytbara. Metoder som har använts i förstudien har varit; informationssökning, kvalitativa intervjuer, teknisk LED-modulsinventering samt konstruktionsundersökningar. Metoder som använts i produktutvecklingsfasen har varit; tekniska informationsstudier, Idéinventering genom visuell idégenerering, imageboards och skissprocess (att tänka med en penna). Syftet med projektet har varit att utveckla en LED-armatur med utbytbar ljuskälla. Projektets resultat blev en LED-golvarmatur med utbytbar ljuskälla. Ljuskällan som används i armaturen är enligt den unga branschfrivilliga standarden för LED-moduler, Zhaga..

Lättelement located in Örnskoldsvik AB is one of Sweden's leading companies in the development of building elements in the form of roofs, walls and floors made ??out of light beams. The company has clients from Lund to Kiruna, and from Norway. This means that the elements have high standards when they have to take many different loads from wind and snow due to such wide geographic variation.The roof elements are structured so that the main body is made of light beams with an I?profile.

The purpose of this essay was to understand why the pupils of upper secondary school are unable to pass the Mathematics A level. As method, I chose interviews, since the personal and various experiences of the informants are very important for the validity of this essay.This study has shown that the students lack motivation and consider Matematics boring. They haven?t been able to fathom the connection between the subject and how it van be used in everyday life. If the pupils? are to pass their Mathematics A level, they need time, further recourses and teachers who are apt and attentive pedagogues.Additionally, the teachers need more knowledge when it comes to methodology and didactic styles..

I denna uppsats undersöker jag hur pass effektiv jag kan vara i mitt musikskapande och hur jag kan göra för att bli ännu mer effektiv. Under nästan två månader skrev jag tre låtar i veckan som resulterade i totalt 16 stycken låtar. Av dess valde jag ut fem stycken som jag spelade in och producerade. Genom att ge mig själv tydliga tidsgränser och använda effektiva verktyg och metoder, har jag lyckats skriva mer musik än vad jag någonsin tidigare har gjort. Resultatet visar att med vilja, disciplin och rätt verktyg så kan jag producera betydligt mer material än vad jag tidigare hade vågat tro..

Det här examensarbetet grundar sig i en gemensam fascination för hur ljus och mönster i samverkan kan förändra upplevelsen av ett rum eller skapa nya rumsligheter. Det handlar om att med traditionellt screentryck och tillägg av ljus hitta nya sätt att arbeta med och förnya användningen av mönstrad textil i offentlig miljö.Resultatet av arbetet är Light Spaces ? ett koncept för mönster och belysning i offentlig miljö där perspektiv förskjuts, linjer får en mening de inte först hade och nya rumsligheter skapas. I korridorer, öppna ytor och mötesplatser ger perspektiven i mönstren ? i samverkan med ljuset ? upphov till nya upplevelser och nya rum i rummen.

This report presents thesis of Liisa Kokkonen in collaboration with Muovikilpi Oy.The project?s goal is to find a new construction for an existing lamp made of acrylic. Form and design retains and the manufacturing occurs at Muovikilpi Oy. The project contains the new construction and manufacturing of the lamp and also a proposition for a set with floor and wall lamp.  The paper gives an outline of acrylic as material and how it reacts with light.

The object of the thesis is to propose a new lighting plan for the square Fyristorg in Uppsala, and to describe the process which have led to it. It all started when I choosed the place together with the municipality of Uppsala. I have been doing research and analyzed how the place and it´s existing lighting works both during different times of the day and also in the evening. After researching the place and it´s existing lighting I´ve decided to put up the following goals fot the new lighting design. 1. The general light level of the place shall be experienced as higher than today. 2. The light level of the place shall be adapted to the light levels of surrounding places. 3. The lighting shall be free from glare. 4. The lighting shall be adapted to people passing by. 5.The lighting shall be adapted to the surrounding architecture. 6.

Bakgrund: Om ett barn fo?ds fo?r tidigt kan fo?ljden bli att barnet va?rdas pa? en intensivva?rdsavdelning. Dessa barn kan utsa?ttas fo?r ma?nga livsno?dva?ndiga men sma?rtsamma procedurer under va?rdtiden. Sma?rta a?r en negativ upplevelse fo?r individen ba?de pa? kort och pa? la?ng sikt.

I dagens samhälle blir kreativitet och nytänkande allt viktigare för företags överlevnad och konkurrenskraft. Därmed har även behovet av kreativa personer på arbetsplatsen ökat. Studiens syfte var att undersöka om kreativitet, genom Runcos ideational scale, kunde kopplas till något personlighetsdrag i Big Five samt till hur pass kreativt en person arbetar. Detta undersöktes genom en enkät med 66 frågor i 3 delar. Enkäten lämnades ut i både pappersform och som webenkät till ett stort antal företag.

Normally the operational amplifier is used as a component in active filter design. The goal for future components in filter design is large bandwith and the use of low supply voltages. The use of current-mode instead of voltage-mode circuits gets a step closer to the required performance. A component that use current as the signal conveying part is the current conveyor. In this report a comparative study between two current conveyor structures of second generation (CCII) is performed.

A new build in the Swedish nuclear power system would entail increased re-quirements for the proposed repository, which is adapted after the reactors of today. With a fast reactor, capable of burning nuclear waste, operating in parallel with the light water reactors, the increased requirements on the repository could be reduced.In this thesis, simulations of a light water reactor and a fast reactor have been performed by using the Monte Carlo code Serpent to investigate the changes in the fuel inventory. The light water reactor in the study is a boiling water reactor and the fast reactor of the type sodium-cooled fast reactor and they have been used for three different operation scenarios.By studying the fuel composition and the results from the simulations of the three scenarios conclusions can be drawn. Conclusions regarding the change of the fuel inventory and decay heat in Clab as well as the interim storage facility and in the repository. Depending on the operation alternative the changes dif-fered significantly and especially regarding the mass of burned actinides for different fuels in the fast reactor.The lowest increase of fuel assemblies was meet when using 50 years old fuel with 20MWd/kg U burnout and 2,0 % enrichment for start up of the fast reactor and 30 years old fuel assemblies with 50MWd/kg U burnout and 4,7 % enrichment for the further operation of the reactor.The increase of the number of fuel assemblies was 3174, which is equivalent to 641tons of heavy metal.

Titel: Value stream mapping in practice ? A case study at Light MyFireAuthors: David Rydman and Tomas ÖnnemarMentor: Veronica Ülgen SvenssonExaminer: Åsa GustafssonBackground: Companies push their prices in today's markets to be competitive, which means that companies need to find ways to reduce costs while maintaining profits. (Cudney, 2009) According to Bergman and Klefsjö 2007, the basic rule of quality improvement says "there is always a way to achieve higher quality at a lower cost". One way is to improve a company's processes to get a more efficient flow and improvements that may cut costs. (Bergman & Klefsjö, 2007) Why it's important to look at the processes are that they often contain waste that can be eliminated.

AbstractThis report intends through a case study to investigate if lightweight concrete isappropriate as main material in the outer wall of a seven storey residential building.A technical design is carried out in accordance with the definitions and requirementsfor passive houses, given by FEBY?s1 ?Demand specification for passive houses?.A literature review is also carried out for a comparison between regular bolt wall andlight weight concrete wall, with a focus on the safety of moisture.The lightweight concrete block used in the report is as a celblock produced by thecompany H+H Sweden AB.The methods used have resulted in compliance with requirements andrecommendations from authorities. Calculations of energy, noise and moisture riskassessment has been carried out.The work has resulted in the conclusion that the lightweight concrete itself is notable to isolate in the extent necessary to obtain chosen U-value of 0,1 W/m2 ° C,without getting to thick. Therefore additional insulation is needed. There are fewrelevant reference objects built with only light weight concrete.