The interest for power and energy measurement has greatly raised with todays increasing electricity prices and enviromental awareness. In the search for energy efficient solutions, the measurements are more complex due to increasing of non linear components. Harmonics and non sinusoidal voltages put high demands on sampling and filtering. Meanwhile, the price must be controlled so the customer still will find it interesting to invest in smaller plants. ITT W&WW asks for a robust, heat resistant power meter with compact dimensions to allow mounting inside the casing of a pump.

The ?civilized? world is in need of fossil fuel in order to function. Hybricon AB is a company in Umeå that is developing a technology that hopefully can reduce parts of this need. They are currently testing their two electrical busses (with Hybrid backup) in city traffic on the roads of Umeå in cooperation with the county of Umeå.                               The busses are originally diesel-busses, but the diesel motor has been replaced with two electrical hub-motors with a power of 145 kW each that are powered by batteries.The batteries are charged at the end station after each route. In case the batteries should run low on capacity during driving, they can be recharged by the so called genset.

In June 2006 the Swedish government decided that the use of energy in buildings should be reduced by 20 percent until 2020, compared to the level of energy used in 1995. To contribute to this goal, the real estate company ?Eskilstuna Kommunfastigheter AB?, set up own goals for their buildings. In 2009, the goal for schools was to have a maximum energy use of 118 kWh/m2year for heating and hot water.The school ?Hållsta skola?, just south of Eskilstuna, exceeds the limit since it used 270 kWh in 2008.

Ikoniska auktoriteter är personer som tillskrivs sådan betydelse att de kommit att symbolisera delar eller aspekter av samhällslivet eller epoker i historien och som kan sägas ha haft ett betydande inflytande på samhället och kulturen. I studien undersöktesom ikoniska auktoriter påverkar oss mer eller annorlunda än andra källor. I ett experiment fick högskolestudenter uppdelade i fyra grupper läsa en text under hög elaboration om en psykologisk teori där variablerna ikonisk auktoritet och personligrelevans manipulerades. Deltagarna ombads sedan skatta vilken trovärdighet de ansåg att teorin hade. Studien ställde upp två hypoteser: att hög ikonisk aukto-ritet skulle öka den skattade trovärdigheten och personlig relevans minska den.

The City of Gothenburg has an urgent need to upgrade its public transport. The capacity of its light rail transit (LRT) has reached maximum capacity within the inner city limits years ago. The construction of an underground metro will be very expensive and time consuming due to the soft clay beneath the city. The apparent need of developing another type of mass rapid transit (MRT) is urgent. An elevated metro have turned out to be a success in Greater Vancouver, but is it possible for the system to operate well in Gothenburg with its narrow streets and current land use; will its route coexist with the current LRT or will the noise disturb people too much?.

Concrete floors have traditionally had no problems with annoying vibrations. However with the demand for larger spans the floors need to be made more slender with a higher degree of utilization and lower mass. Therefore new floors may have problems with vibration serviceability. This thesis studies the vibration characteristics of hollow core slabs. The analysis was made in the finite element program Ansys. The hollow core slab was subjected to a varying force simulating one person walking across the slab.

The main purpose of this study is to examine if variations in voter turnout for the European Parliament elections in each member state is affected by the rate of national party polarization on the EU-dimension of party politics. The theoretical background assumes that a high level of polarization generates higher voter turnout since more alternatives are presented to the electorate. This makes it easier for the electorate to find a party that represents their preferences. This will, in turn, increase the likelihood that they will participate in the election.This study uses a research design based on a quantitative analysis with data from each member state, except those with compulsory voting, in the European Parliament elections of 2004 and 2009. The results of the analysis indicate a relationship between high levels of party polarization and lower turnout in the European Parliament election.

Detta examensarbete var ett projekt som utförts på uppdrag av SCA AB. Syftet var att utveckla en prototyp av en flexibel upphängningsanordning för tre modeller av toalett dispensers nämligen S1,T2 och H2. Samma upphängning ska gälla för alla tre modeller och minimera skada på väggarna. Fokus låg på flexibiliteten, enkel att montera och robusthet. Arbetet har följt en strukturerad produktutvecklingsprocess som inleddes med informationsinsamling genom konkurrensanalys, studiebesök och intervjuer.

Powder Metal (PM) gears are machine element components which operate under the same principle as conventional gears, but, due to their intrinsic material characteristic need to be designed slightly different, and its manufacturing process offers advantages previously unobtainable by conventional steel gear manufacturing methods. The use of PM in similar applications, such as synchronous hubs, makes them a suitable candidate for production in such material. The current master thesis work focuses on gear design using PM by utilizing finite element method (FEM) to reduce weight and inertia taking into account root bending strength and tooth deflection.First a topological optimization is used to determine feasible candidates for different web designs which have as objective to reduce volume, similar topologies were shown during different loading conditions; and hence, this topology was chosen as a suitable candidate. A shape optimization of the topological candidate was performed having as state variables root bending strength, independent for compressive and tensile side of the tooth loading; and tooth deflection, which in concept can be correlated to static transmission error (TE).Another aspect in this thesis analysed is the possibility to incorporate non-trochoid root geometry, a trochoid root is always present when machining with a hob, into the gear root and hence reduce the stress concentration here. Due to the use of PM, a non-symmetric optimized root can be achieved and hence be optimizing compression and tension.Results showed significantly lower inertia, for example certain results showed 40% reduced when compared to solid gear, with adverse effects as increase in tooth deformation and increase in maximum principal stress.

Uppgiften som detta examensarbete går ut på är att utveckla en ny steghållare som ska ingå i Thules produktserie Professional. Det är önskvärt att kunna lasta stegen bakifrån och möjliggöra lastning från marken även på högre skåpbilar. Steghållaren ska framförallt vara anpassad till yrkesmän, såsom hantverkare, målare, etc. Därför söker Thule en robust, säker och lättmanövrerad steghållare med attraktivt utseende. Steghållaren ska minska den tid det tar att lasta på och av stegen.

Equine cutaneous melanomas arise much more often in horses with a grey coat color than in horses of other colors. Some scientists have in different studies come to the conclusion that the melanomas are neoplasms which can be classified by examining their histological and macroscopic features. The more defined and demarcated a tumor is, the more benign it tends to be. Other scientists believe that the skin lesions are the result of a pigmentation disorder that is linked to the greying of the coat color. According to this theory, the lesions are not malignant although they have the ability to metastasize.

The changes in the Swedish meat- and meat processing industry have been substantial in recent years. These changes will alter the business environment for many companies. In order to be prepared to face new threats and new opportunities, companies should be actively working on these issues. Risk awareness and by developing of risk management strategies companies can act quickly and effectively when the conditions changes. The objective of this study is to analyse whether and why companies in the Swedish meat- and meat processing industry use various forms of risk management strategies.

Detta examensarbete är utfört i samarbete med dumpertillverkaren Volvo CE i Braås. Då dumpern framförs i hård terräng är det nedersta insteget fäst i två stålvajrar vilket gör det flexibelt. Då flexibiliteten in mot maskinen idag är större än företaget önskar undersöks det i detta arbete alternativ till dagens lösning. Detta görs med hjälp av ingenjörsverktyget ?Eight Steps to Getting Design Right? vilket är en produktutvecklingsmetod som gör det lätt för läsaren att följa utvecklingen från idé till färdig produkt.

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.

This thesis compares political participation by the public through the Swedish Parliamentary Ombudsman (PO) and the German Petitions Committee of the Bundestag (PC). Through studies of literature and statistics I examine how citizens can participate through the institutions, how frequently they do and the likelihood of sparking a debate while participating.Using media theories as well as theories of participatory and representative democracy I study how citizens can use these institutions for purposes of control and proposition.Both institutions deal with complaints but the PC also deals with propositions for legislation, making the institution more versatile. The PO deals with more cases than the PC and has more far-reaching competences and areas of inspection, although neither institution has binding decisions. Thus the direct advantage for citizens using the institutions is the chance of reaching out to media and the public through freedom of information laws and the German online petition forum.The PC to a larger extent fits the representative model while the PO in some respects is more a legal than a political institution, being managed by lawyers instead of MPs. Neither institution meets the ideals of participatory politics although the German official petition is closer to it..