I denna uppsats undersöktes det om toner vid olika tonhöjd påverkades olika mycket av de hörbara skillnader som uppstod vid MP3-kodning. För att ge upphov till dessa hörbara skillnader kördes en MP3-kodare vid låga bithastigheter. Detta med MP3-kodaren LAME MP3 Encoder och toner från en Fender Stratocaster elgitarr, dessa valdes godtyckligt då arbetet strävade efter ekologisk validitet till vanligt förekommande MP3-kodning. För att undersöka om dessa elgitarrtoner vid olika tonhöjd gav ifrån sig olika mängder hörbara skillnader utfördes ett pilottest och ett lyssningstest. I båda testen bedömdes upplevda kvalitetsskillnader mellan MP3 och CD-kvalitet.

Lame dogs are a common group of patients for the practicing veterinarian. In the literature it is described how a clinical examination can be performed, based on general clinical-, orthopedic- and neurological examination, and visual evaluation of the dog when standing and during motion. For research, objective gait analysis systems are also used to study clinically healthy and lame dogs during motion. The aim of this degree project was to compare objective kinematic gait analysis with a visual evaluation of dogs with different types of lameness. The project was a pilot study to show if objective gait analysis could be used as a support for the visual examination. Ten lame dogs of different breeds and with different diagnoses were included in the study. They were all patients at the University Animal hospital, Uppsala.

In the dairy production it is necessary to be able to sort cows. Dairy cows are sorted for many different reasons i.e. regrouping into production strings or for treatments i.e. inseminations, pregnancy and health checks, vaccinations or hoof trimmings. One labour saving way of conducting sorting is by using an automatic sort gate.

This bachelor thesis describes the process of developing a two wheeled robot with activebalancing. The robot is designed to go straight ahead until it reaches a finish line. Then it shallstop to stand still balancing. The workload in the group has been divided according to theprevious individual projects, which are attached. The design of the robot is inspired by theconcept of the Segway.

This bachelor thesis describes the process of developing a two wheeled robot with activebalancing. The robot is designed to go straight ahead until it reaches a finish line. Then it shallstop to stand still balancing. The workload in the group has been divided according to theprevious individual projects, which are attached. The design of the robot is inspired by theconcept of the Segway.

The most common reason for a horse owner to seek veterinary care for their horse is related to the musculoskeletal system. Assessment of the horse's movement pattern is essential in the equine veterinary work. How uniformly veterinarians evaluate the lame horse may have both diagnostic and prognostic significance, such as follow up examination by the same or different veterinarian. The purpose of this study was to evaluate whether there are between-veterinarian differences in assessing lameness in the same horse. In total 12 veterinarians evaluated 80 video sequences of 4 horses with induced lameness and made an evaluation of the affected limb as well as the degree of lameness.

The purpose of this study was to compare less experienced veterinarians? subjective assessments of lameness in horses on the lunge. Previous studies on subjective lameness evaluation have mainly focused on horses trotting in a straight line and the results have shown generally low compliance. With a web-based questionnaire, 43 veterinarians assessed 60 recordings that showed both fore- and hindlimb lameness, interspersed with sound horses that were trotting on the lunge in one direction. The horses showed mild to moderate lameness.

This bachelor degree project was carried out at Saab AB Service and Repair, Arboga, Sweden. The objective was to design, construct and implement a new stable and reliable method of measuring the continuous vertical displacement (height) of the military search radar PS861 mounted on a hydraulic powered elevator. The end product needs to be durable enough to be fully operational in the harsh environment of an outdoor elevator shaft and yet as accurate and precise as possible since one of its purposes is to calibrate control equipment. Previously used technique has proven not to meet any of the above mentioned properties.A prototype using a high resolution quadrature output rotary encoder has been developed, allowing a completely digital interface. This new method has been evaluated in laboratory environment where tests have been conducted regarding both reliability and validity.

Detta examensarbete har gjorts på uppdrag av SP Maskiner AB och berör längdmätningsenheten på skördaraggregatet SP451LF. Pulsgivaren i den befintliga längdmätningen anses inte nå en acceptabel livslängd och därför skall ett sensorlager prövas som ersättare.Uppdraget består i att söka ett lämpligt sensorlager, dimensionera en komplett mäthjulslagring samt att ta fram ett konstruktionsförslag till prototyp på längdmätning.Arbetet begränsas av att den omkonstruerade längdmätningen skall passa på SP451LF aggregatet. Det betyder att längdmätningens infästning mot aggregatet inte får förändras och dess yttermått måste hållas inom de gränser som aggregatets chassi tillåter..

Nimo Verken AB is the leading producer in the Scandinavia of drying cabinets. The construction has, with small changes, been the same since the 70s with a thermostat and a timer as controlling system. There was a wish to develop a modern cabinet which showed remaining time on a display and with energy saving functions.In this report we go through how it is possible to implement a digital controlling system, where remaining time is shown on a display and where it is possible to choose a preset ?program?.The report first presents the fundamental theory for a PIC, where we describe the different registers, how interrupts are handled, the internal clock function and how data is sent to control the different parts of the construction.Next the report presents and describes the new hardware that is needed, such as the encoder, the temperature sensor and the display.After the theory we describe how the program in the PIC may be drafted. Last in the report we have the result of the tests of the temperature variations and the accuracy of the time..

Background: Evaluation of lameness in horses is traditionally performed by a veterinarian who subjectively evaluates the movements of the horse. Accordingly, lameness diagnosis varies with the veterinarian and circumstances for which the horse is examined. Research within the area has long tried to establish an objective and standardized method for lamenessevaluation in horses. Several methods have been shown to be reliable and are used regularly within research, for example measurement of forces between the hoof and ground, and measurement of movements with high speed cameras or accelerometers. However these methods require considerable preparation, standardization, and expensive equipment as well as produce large amounts of data that are incomprehensible for the clinician.

In this master thesis, control algoritms using arm side sensors are investigated for an industrial robot. The sensors can be position encoders placed after the gearbox and accelerometers on the robot arms. Control strategies are discussed and evaluated for different models of the robot, after which chosen strategies are applied to a realistic model. Control algoritms using arm side sensors (LQ, dual-loop and PD-PID) are compared to a PID-controller that only uses measurements of motor position for feedback control. The comparison are done with respect to disturbance rejection, oscillation damping, robustness and tracking performance of a reference trajectory.

Ett program som simulerar signalbehandlingen i ett cochleaimplantat med signalbehandlingsstrategin ACE (Advanced Combined Encoder) har konstruerats. Programmets främsta syfte är att i förväg prova ut inställningar i ett cochleaimplantat och genom detta försöka förutsäga olika användares individuella inställningar. Programmet har validerats med utsignaler bearbetade av Cochlear Limited i deras egenkonstruerade Matlab-modul för forskning inom cochleaimplantat, NMT (Nucleus Matlab Toolbox). Samma insignal som använts av Cochlear Limited har processats av programmet och utsignalerna från detta jämfördes med utsignalerna från NMT. De bägge utsignalerna, producerade med samma inställningar, stämde bra överens. Komprimeringsfunktionen i programmet, som är en vital del av signalbehandlingen, visade sig stämma bra överens med NMT:s komprimeringsfunktion, sånär som på en relativ minskning av värdet vid starka insignaler. Programmet ska nu användas på Cochleaimplantat-sektionen vid Uppsala Akademiska sjukhus för att pröva ut individuella inställningar till användare av cochleaimplantat.

The purpose of this literature study was to investigate the possibilities to improve longevity and stayability of beef cattle with breeding. The breeding goal for beef breeds is to produce animals with high capacity for growth and good feed efficiency. Longevity and sustainability are two important features to include in the breeding goal. If longevity is increased each cow can produce more calves and the number of female calves used for recruitment can be reduced and only the best heifers need to be selected for breeding. The benefits of longer life is that it lowers the costs of recruitment animals, it increases the number of young animals that become available for slaughter, and it increases the proportion of high producing animals in the herds.

Uppsatsen är en studie i hur samhället och den konsumtionskultur vi lever i speglas i den samtida konsten och den offentliga debatten. Det didaktiska perspektivet tar upp samtidskonsten roll i bildundervisningen och hur frågor som rör konsumtion och identitet visuellt kan bearbetas och gestaltas i en lärandesituation.Utgångspunkten i studien är teorier om modernitet där reflexivitet, görbarhet och individualisering är centrala teman. Människan är idag inbegripen i ett reflexivt arbete för att skapa sig själv och det posttraditionella samhället betecknas av att traditionella normer brutits ner och individen tvingats bli något av en ?sökare?.I senkapitalismen uppstår nya symbolvärden vid sidan av bytesvärden och bruksvärden, symbolvärden som är knutna till livsstil och identitet. Studien beskriver hur människan manifesterar sin vilja att särskilja sig men också att tillhöra genom konsumtion som symbolisk aktivitet, där konsumenten genom att handla konstruerar sitt ?jag?.