Metoder och system för mätteknik får en allt större betydelse för moderna tillverkningsföretag. Allt fler företag har insett det strategiska värdet av en förbättrad kvalitetsuppföljning för att minimera kostnader på grund av kvalitetsbrist. Syftet med denna rapport är att ta fram en strategi för standardisering av kontrollmätningen vid den nya typ av mätplats, en Q-plats, som ställts upp inom avdelning DXMH vid Scania Transmission. Q-platsen ger möjligheter för operatörerna att i större grad själva genomföra kontrollmätningen i närheten av produktionslinjen. I rapporten analyseras först Q-platsens funktion utifrån en studie av Scania Transmission DX, dessutom redovisas fallstudier på andra avdelningar inom Scania och vid andra tillverkningsföretag.

Husaberg Scandinavia AB is a company producing and developing a range of motorcycles for both on- and off-road use. Husaberg provided the project group with a task of developing an entirely new way of operating the sequential transmission that can be found in today?s motorcycles. The target was to bring the product from idea to a functional prototype ready for further tests. Operation of the motorcycles transmission is today made by a foot pedal placed on the left hand side of the bike.

Syftet med detta arbete är att analysera hur Ringhals reaktor II kan ersättas med hållbar energiproduktion. Detta görs genom att analysera vilka produktionstekniker som är kommersiellt gångbara i Sverige. Sedan analyseras dessa utifrån dess geografiska och tekniska begränsningar i regionen Västra Götaland och Halland för att bestämma hur den nya energimixen kan utformas. Utifrån energimixen simuleras sedan energiproduktionen i elzon 3, SE3, under varje timme över ett år för att undersöka om den nya produktionen kan möta efterfrågan och huruvida elnätet kommer att belastas hårdare på grund av eventuell ökad transmission till/från andra delar av landet. Från energimixen beräknas även vad produktionskostnaden för elektriciteten blir för den alternativa produktionen. Resultatet visar att den föreslagna energimixen klarar av att ersätta energiproduktionen från Ringhals reaktor II med endast en marginell ökning i transmission till/från regionen.

During test flights SAAB uses the data acquisition system COMET 16. The part of the system that receives the signals from the sensors and converts them is called KSM 15. The purpose of this thesis is to develop a data acquisition module on stacked PC/104 modules with a lower production cost. Our work has been divided into one part about analog signal conditioning and a second part with digital filtering and memory management of the sampled data. The analog part, designed of regular components like instrument amplifiers, voltage references, operational amplifiers and multiplexers, adjusts the sensors signal levels for the ADC?s that converts the signals.

Surveys show that consumers tend to avoid traditional marketing channels, leading the practitioners to use earned media channels through public relations (PR). This has also led to the use of covert PR. To understand the use of this communications method, the purpose of this thesis is to study campaigns, which have gained transmission in social media, by investigating how practitioners of three different campaigns motivate the choice to use covert PR.The study is based on a hermeneutic methodology and has an abductive approach. It is carried out by semi-structured elite interviews with six contributors of three different campaigns, using covert PR. The primary data consists of the empery of the interviews, while the secondary data consists of a theoretical framework of excellence in public relations, the PR practice and viral messages.The result of the study indicates the point of view that covert PR has given the campaigns a wider reach.

Ternary codes for unequal error protection is a part of a communication system where different parts of the information to be transmitted can receive different amount of error protection. There are a lot of applications where the channel conditions fluctuate so that reliable or acceptable communication can not be guaranteed. Regardless whether the fluctuations of the channel are intentional or not the idea is to let the coderate decrease so that the error correcting capability can increase for the part of the information to be more protected. By using the support, the nonzero positions of the ternary code, a new binary code can be extracted with properties different from the ternary code in the sense of cardinality and minimum Hamming distance. When the channel conditions are good the receiver decodes the message using ternary decisions and receives all information included in the codeword.

Svenska Kraftnät is (together with the other transmission system operators of the Nordic power system) responsible for keeping balance between the generated and demanded power in the Nordic power system. Spontaneous load variations and system disturbances, however, lead to power imbalance followed by frequency variations. The frequency deviations can be limited to an acceptable level by the spinning reserve, mainly by hydro power control. But there are also other system properties which have a great influence on the frequency and system stability. The frequency and voltage dependence of the loads have a direct influence on the power balance.

Antalet järnvägstunnlar i tätbebyggda områden kommer att öka de närmaste 20 åren. Därför finns behov av bra förutsägelser om vibrationer och ljud orsakade av tåg i fastigheter utmed de planerade tunnelsträckningarna. Förståelsen för hur tåginducerade vibrationer propagerar i bergmassan är i dagsläget begränsad. Eventuella för- och nackdelar med bergets och sprickors egenskaper kan då inte utnyttjas optimalt. Syftet med detta examensarbete är att studera hur lågfrekventa vågor propagerar genom (i) en godtyckligt orienterad spricka samt (ii) multipla parallella sprickor.

A zoonosis is a disease or infection that is naturally transmitted between vertebrate animals and humans. The majority of infectious diseases that affect humans are zoonoses. Environments where wild animals, domestic animals and humans live in close proximity with no or small boundaries in the ecological system favor the transmission of diseases between animals and humans. The above described situation is more common in low income countries, where humans and animals live in high density and zoonoses are generally more common. The study was conducted in Cambodia.

Today's urban centers become denser, which contributes to higher demands on sound and noise. It is therefore highly relevant to build homes with good sound environment while maintaining living space. This thesis aimed to reduce the current concrete walls and see how the mass law affects the reduction index value and flanking transmissions. Handmade calculations were calculated according to the Swedish standard SS-EN 21354-1, where only air sound was calculated.Calculations we­­­re performed on wall elements with different weights and thicknesses, and compared with results from Bastian.In Bastian calculations of flanking transmissions were also made, this was made to see the impact of the flanking transmission when changing the mass per unit area. Mass law's impact was examined by flanking transmission and the result shows that they are not affected as long as the ratio between the thickness and the density remains the same.A questionnaire survey was conducted to determine the actual sound experience; this questionnaire was conducted on three concrete buildings in Växjö.

Simulering är en viktig del av utvecklingsarbetet för nya datorkort hos Centre of Excellence - Computers på Saab AB i Jönköping. Ju tidigare i utvecklingsarbetet som defekter och svagheter hos designen hittas desto enklare och mindre kostsamma blir ändringarna att införa. På CoE används simulerings och analysverktyget HyperLynx från Mentor Graphics för att simulera alla kritiska nät. På så sätt kan svagheter hos en design hittas redan innan prototypstadiet.För att simulatorn ska vara användbar krävs dock en kunskap om hur dess resultat korrelerar med verkligheten. Det leder till den övergripande frågeställningen för detta arbete, hur väl överensstämmer HyperLynx simuleringsresultat med verkligheten? Frågeställningen besvarades genom att jämföra simuleringsresultat med motsvarande uppmätta signaler på ett testkort.Resultaten visar att HyperLynx håller en mycket god kvalitet.

This diploma work has been carried out in collaboration with the building contractor Sh Bygg Fastighetsutveckling AB in Uppsala with the intention to investigate how the height of a building affects various energy aspects such as transmission losses, infiltration, and the specific energy usage. Three different reference objects have been studied. The reference objects have been simulated for four different heights in the calculation program VIP-Energy.The results show that an increase in floor number can lead to both advantages and disadvantages. As the number of floors increases, transmission losses per square meter floor area decreases. However, as the height of the building increases, the reduction rate decreases.

Secondary deciduous forests, which have their origin in earlier pasture- and meadow-land in slopes along the lower reaches of the Ume river, are thought to contain high nature conservation values, in spite of a relatively low age. The aim of this study was to clarify how factors as historical use, exposition, disturbance dynamics and successional age influences the conservation values in these types of riparian forests and how this can be implicated in the practical work with conservation and management at Umeå municipality. Sample plots were placed in seven stands with a variation of their historical use, exposition, disturbance dynamics and age of succession. Conservation values as structure, tree-regeneration, abundance and composition of vascular plants, amount of dead wood and the abundance of signal-species were measured and registered. The species composition and especially the composition of tree species, differed between forests with different exposition and different historical use.

In today's fast-paced, intense and complex media environment, it is hard for non-profit charity organizations to reach out and get their messages heard.In this study we examine whether the theories of advertising signaling also applies for charities. Past studies of the signaling theories indicates that higher perceived advertising expense leads to more positive effects on purchase behavior and brand perceptions. However, we believe that this does not apply for a charity organization. We argue that since charitable organizations have a fundamentally different mission than commercial companies, they will need different ways to signal quality and credibility, and therefore the common signal-theories will not hold for these organizations.To test our hypotheses, we conducted two surveys where the respondents saw one of five versions of the same ad for a well-known Swedish charity organization, or one of two ads for a commercial corporation. The ads had been manipulated to simulate different levels of perceived cost.Our results shows that perceived ad cost only affects attitude towards the ad if a charity was the sender, whereas perceived ad cost affects intentions, attitudes and credibility if a commercial corporation was the sender.

This paper is a study and comparison between the two Wireless LAN (WLAN) standards HiperLAN/2 and IEEE 802.11a. WLANs are used instead or together with ordinary LANs to increase mobility in for example an office. HiperLAN/2 is an European standard developed by ETSI and the IEEEs standard is American. A WLAN-card consists roughly of a Medium Access Control (MAC), Physichal layer (PHY) and an antenna. The antenna is the same for the different standards.