Tail-biting in pigs is an animal welfare issue and in Sweden during 2002 the producers lost tree million Swedish crowns because of tail biting. This economic loss depends on the pigs which are discarded at slaughter because of tail biting. Tail biting can be separated into two stages, "pre-injury" and "injury". The aim of this study is to investigate if tail biting depends on environment or genetic background.A lot of research on the environments effects on the behaviour of pigs but not so much on the genetic effects has been performed. The frequency of tail biting in pig farms influence among others of environment enrichment, ventilation, gender and breed of the pig.

ObjectiveThe objective of this study was to investigate the clinical application to use ASSR in anesthetized childrenDesignOne main ambition of the investigation was to compare hearing threshold using ABR with estimated hearing threshold using ASSR. Another aim was to examine if the duration of an ASSR measurement could be reduced by only using the frequencies 1, 2 and 4 kHz and exclude the frequency 0.5 kHz. This is a retrospective study using electrophysiological measurement from a database.ResultResults showed a high correlation between hearing threshold using ABR and estimated thresholds using ASSR, with the frequency 0.5 kHz showing a slightly lower correlation. Result also showed that the test duration was increased when using all test frequencies in ASSR-measurement compared to when 0.5kHz was excluded. ConclusionThe study showed a high correlation when comparing hearing threshold using ABR and ASSR.

Denna utvärdering av Umeå universitetsbiblioteks (UB) övergång till RFID-teknik (radio frequency identification) tar upp hur personalen har upplevt konverteringstiden och övergången. Syftet var att undersöka den involverade personalens åsikter och attityder kring omställningen och de eventuella konsekvenser och effekter som RFID-övergången fört med sig.Undersökningen genomfördes med korta uppsökande intervjuer vars frågor utformats i samråd med Umeå universitetsbiblioteks projektledare för RFID-konvertering. Frågorna resulterade i kvantitativa svar men respondenterna gavs möjlighet att utveckla sina svar med egna reflektioner. Av de totalt 17 respondenterna var nio män och åtta kvinnor i åldrarna 32-64 år. Resultaten visar på en till stora delar nöjd respondentgrupp, majoriteten tycker att övergången till RFID har fungerat bra, de flesta känner sig opåverkade i sin yrkesroll efter införandet och endast ett fåtal har lämnat konverteringstiden med några bestående men som drabbat deras arbete eller de själva. Bland respondenterna finns det en generellt positiv inställning till RFID-teknikens framtid på arbetsplatsen och ett flertal hoppas på en vidareutveckling och utbyggnad av tekniken..

The aim for this study where to investigate the frequency of cutting cracks in saw timber harvested in the storm-damaged forests in regions where the storms Hilde and Ivar hit. The idea for this work came from one of the region?s biggest actors, SCA Skog and Jämtlands district. The purpose where to find out how big proportion of the saw timber that contains cutting cracks, their financial cost in lost wood value and also give advice and suggestions on how to work against the frequency of cutting cracks. For the field-study some guidelines where used to make sure that the samples were taken under the same conditions, they were: ? The field-study must be performed under harvesting of storm-felled forest, which are horizontal/inclined trunks. ? The averaged sized tree will make it possible to harvest saw timber. ? The trunks can?t be root cut. A methodology called in Swedish ?Trissmetoden? was used because it is the most frequent used methodology in earlier performed studies and the only one that can be used I field. Under the field-study data were collected from 570 saw timber logs, 30 logs from each one of the tested harvesters.

Tail-biting in pigs is an animal welfare issue and in Sweden during 2002 the producers lost tree million Swedish crowns because of tail biting. This economic loss depends on the pigs which are discarded at slaughter because of tail biting. Tail biting can be separated into two stages, "pre-injury" and "injury". The aim of this study is to investigate if tail biting depends on environment or genetic background.A lot of research on the environments effects on the behaviour of pigs but not so much on the genetic effects has been performed. The frequency of tail biting in pig farms influence among others of environment enrichment, ventilation, gender and breed of the pig.

I uppsatsen behandlas frågeställningarna: Går det finna ett gemensamt sound hos musiken som spelas i P3? Och hur ser P3:s tablå ut under en vecka? Dessa frågeställningar undersöks för att ge en bild av den musik som spelas i P3 som är Sveriges Radios ungdomskanal. Frågorna undersöks genom att utgå från tidigare forskning i ämnet, information från P3:s hemsida samt genom djupgående analyser av sju låtar från de artister som spelades mest under vecka 46 år 2010. Analyserna utformas utifrån Gunnar Ternhags gehörsbaserade analysmetod. Även Lars Lilliestams gehörsbaserade analysmetoder av rock och blues används.Analyserna presenteras först låt för låt och sedan sammanfattas likheter och skillnader hos musiken som spelas.

LEXION is the name of the largest series of combines made by the CLAAS factory in Germany. LEXION was introduced on the Swedish market 1996 and was for sale in Sweden from 1997. LMB have sold over 400 LEXION-combines in Sweden. In cooperation with the Swedish general agency we decided to make a market research on the Swedish LEXION-market. The questionnaire was supposed to give answers about capacity and technical equipment. Before I made the questionnaire I studied manuals and combines. I got 81 answers of about 325 questionnaires. That makes 25 % reply frequency.

A helicopter based system equipped with a millimetre-wave fire control radar is studied for improvement of the detection probability for moving ground targets. The system is a pulse doppler radar that sends out the electromagnetic wave in repetitive pulses. The frequency in which radar sends this pulse is called Pulse Repetition Frequency (PRF). The velocity of the moving targets is measured by spectral analysis of the pulses received. With this sort of system some targets will not be possible to detect.

The majority of all power cuts that affects individuals and communities are caused by earth faults on the power transmission lines at 10kV and 20kV level [1]. If these power cuts could be eliminated, less disturbances and interrupts would lead to large amounts of money savings.Swedish Neutral has developed such a protection system. When an earth fault occurs power is injected into the neutral point of the transformer. The RCC (Residual Current Compensation) protection calculates a compensation current exactly 180 degrees out of phase to the fault current. Doing this, the voltage at the fault location becomes very close to zero, without affecting the power transmission.The protection system can only compensate automatically for the fundamental frequency (50Hz), and manually for the 3rd, 5th, 7th and 9th harmonics.

Följande rapport behandlar hur välgörenhetsorganisationer arbetarför att konkurrera med varandra när det handlar om att attraheragivare. Mina undersökningar har visat att det inte längre räckermed att stå på stan och sjunga eller gå runt med en bössa för atttjäna ihop till ett gott ändamål. Nu för tiden är givare väldigtkräsna och kräver något tillbaka och det tidigt. Mitt arbete ärfokuserat på välgörenhet som gagnar barn och ungdomar.Granskningarna är fokuserade på audiellt material. Somkomplement till mina efterforskningar har jag gjort ett praktisktarbete där jag producerat ett releasematerial för radio till FondenJag och Min Hund, en fiktiv fond med målet att främja ett liv medservicehund.

In order to decrease the disturbance from a cable testing equipment, the company Ericsson Network Technologies in Falun determined to design a new series resonant test system with a lower frequency. The new equipment is of series resonant type with a system frequency of 500 Hz. This equipment consists of an inductor, a capacitor and a voltage source. The voltage source is the same as the old one, the cable acts as the capacitor but the inductor has to be designed especially for the new equipment. In this thesis work several air coil inductor types were examined.

Arbetet bygger på att de informationssystem som används idag men som blir allt äldre och därigenom inte klarar de krav som ställs på dem. Detta medför att informationssystemen måste migreras till modernare plattformar, då företagen dels inte klarar sig utan dess nuvarande funktionalitet och dels måste vidareutveckla systemen.Detta arbete tar upp olika sätt som detta kan genomföras på och vilka problem som kan komma att uppstå när detta sker. För att kunna undersöka detta så genomfördes ett antal migrationer. Språken som migrationen kommer att ske mellan är Visual Basic 6 och Visual Basic .net. Migrationerna kommer att ske med hjälp av ett migrationsverktyg, samt ett ramverk som i arbetet skräddarsys för just arbetets typ av migrationer.Det arbetet kommer fram till är att det sker problem vid användande av ett verktyg och även att det inte ger tillräckligt med respons på vad som gått snett under migrationerna..

What if the emergency response directly knew exactly where to go and what to do if a road accident occured? During the last ten years the number of motorcyclists in Sweden has doubled. Every year, more than 300 riders are seriously injured and over 40 die in road accidents. Being found in time is critical to increase the chance of survival. The goal of this project is to use design methods to find a solution that enables a fast and adequate emergency response for motorcyclists and other unprotected road users..

This thesis approaches the problem of estimating the arm angles of an industrial robot with flexibilities in joints and links. Due to cost-cutting efforts in the industrial robots industry, weaker components and more cost-effective structures have been introduced which in turn has led to problems with flexibilities, nonlinearities and friction. In order to handle these challenging dynamic problems and achieve high accuracy this study introduces state observers to estimate the tool position.The observers use measurements of the motor angles and an accelerometer and the different evaluated observers are based on an Extended Kalman Filter and a deterministic variant. They have been evaluated in experiments on an industrial robot with two degrees of freedom. The experimental verification shows that the state estimates can be highly accurate for medium frequency motions, ranging from 3-30Hz.

Fem medieföretag har granskats; Sveriges Television, TV4, Sveriges Radio, DN och Aftonbladet. 4 veckor valdes ut, jämnt fördelade över ett år för att undvika att resultatet skulle påverkas av olika idrotters tävlingssäsonger..