Heavy duty vehicles often have problems with traction during the winter periods. For vehicles that can lift tag axles it is possible to increase the normal force on the driven axle by lifting one or more tag axles, this will then increase the propulsive force of friction. This however increases wear on both road and vehicle. A possibility to reduce the wear while achieving nearly equivalent traction compared to lifted tag axles is to allow the vehicle to regulate the normal force by lowering the pressure in the air suspension associated with the tag axles or by the lifting of these axles. The vehicle would then by itself be able to set just the right amount of normal force on the drive wheels to avoid unnecessarily high normal forces while maintaining sufficient traction.The purpose of the report is to find out which parameters affect heavy duty vehicles when driving on slippery slopes and how traction can be improved.

En studie om motivation bland lärare och elever på byggprogrammet..

Syftet med studien är att få större insikt i hur pedagoger kan hjälpa sina elever att få motivation till eget musicerande och spelglädje. Med en fenomenografisk utgångspunkt och genom kvalitativa intervjuer där fyra träblåslärare vid olika musik- och kulturskolor deltog, undersöktes deras syn på hur de ser på sina elevers motivation och hur de undervisar för att inspirera sina elever till fortsatt musicerande.Av intervjusvaren framgår tydligt att viktiga källor till motivation är mål, samspel, grupptillhörighet och jag-kan känsla. I resultatdelen har jag kategoriserat och analyserat intervjusvaren och avslutningsvis förs en diskussion kring resultaten i förhållande till begreppen motivation och didaktik..

Syftet var att kartlägga hur pedagogen kan öka elevernas motivation för ämnet matematik. Kartläggningen ägde rum i år fyra, sju och nio samt med pedagoger från tre olika skolor i Bodens kommun hösten 2004. Avsikten var att hitta de faktorer som påverkar elevers motivation och vad man som pedagog kan göra för att öka motivationen för ämnet matematik. Vi använde oss av enkätundersökningar för att få en så bred bild av helheten som möjligt. Resultatet av undersökningen tyder på att eleverna är beroende av hur man som enskild individ mår, omgivningen, bemötande, eget intresse, pedagogens engagemang, individanpassning, läromedel och lektionens utformning.

This thesis work has been performed at the department of diagnosis and dependability at Volvo Car Company, Torslanda. The background of this project is based on interest in ascertaining how different factors possibly can affect a diagnosis method, which has been developed to find leaks in the fuel tank and evaporation system. According to the OBD II requirements leaks with an orifice diameter larger or equal to 0,5 mm, must be detected. The idea of the diagnosis method is to create an over pressure in the system with an air-pump. The current through the pump is measured and correlates to the power consumed by the pump.

Motivation är ett centralt begrepp inom psykologisk forskning och är väsentligt i organisationer för att skapa förståelse om hur aktiviteter på arbetet påverkar anställdas motivation och prestation. Motivationsfaktorer förklaras bero på både inre och yttre drivkrafter. De inre drivkrafterna styrs av individens intressen och tillfredsställelse i arbetsuppgifter på arbetet, medan de yttre förklaras som exempelvis belöning och att uppnå företagsmål. Denna studie bygger på åtta intervjuer där syftet var att undersöka subjektiva upplevelser av inre och yttre motivation på arbetsplatsen. Resultatet analyserades med hjälp av metoden meningskoncentrering vilket uppvisade 4 teman i faktorn inre motivation: frihet, välbefinnande, mål och delaktighet.

I detta examensarbete presenterar vi vår kvalitativa studie kring fenomenet motivation och motivationsarbete i skolan utifrån ett lärarperspektiv. Fokus i studien är vad verksamma lärare lägger i begreppet motivation samt hur det kan gestaltas i praktiken. Metoden vi har använt oss av är observationer på två olika skolor, i fyra olika klasser och intervjuer av fyra lärare. Resultatet visar att begreppet motivation är diffust och tolkningsbart samt att lärare ofta tar till olika slags artefakter för att skapa motivation och lustfyllda lärandesituationer i klassrummet. .

Dysfunction of the upper respiratory tract is a common cause of impaired performance and intolerance to exercise in racehorses and include several upper airway obstructions. The ones termed dynamic obstructions are primarily seen during physical exertion and affected horses often appear to be normal during endoscope examination at rest. The correlation between diagnoses made at rest respectively exercise is low, suggesting that an examination at rest alone is likely to be insufficient. The upper respiratory tract is exposed to great differences in pressure throughout the respiratory cycle; variations that are further altered during strenuous exercise and affect the rigidity of upper airway structures. In presence of great fluctuations in pressure, stability is achieved through coordinated and synchronous neuromuscular mechanisms. Due to nerve damage or anatomical abnormalities, these functions may be disrupted and further cause a dynamic collapse of the upper respiratory tract when pressure changes become too severe. The etiology behind the neuromuscular dysfunction is not yet fully understood.

Motivation a?r viktigt i alla organisationen och i alla yrkesroller. En bransch med mycket differentierade yrkesgrupper a?r revisionsbranschen och det kan vara problematiskt att motivera alla olika yrkesgrupper med ett och samma incitamentsystem. Da? motivation enligt tidigare forskning anses fo?ra?ndras o?ver tid a?r det viktigt fo?r fo?retagsledningen i ett fo?retag att kontinuerligt arbeta med incitamentsystemens utformning (Adair, 2006, s.95).

An explorative study on the work motivation of employees at a retirement home. The three main factors are internal motivation, external motivation and control. A comparison between how important they estimate the different factors to be and how they experience them today reveals which factor is their key motivator and which areas that need improvement. Results indicat that internal and external motivation are slightly more important than control. And the amount of perceived control reflects the amount of creative and initiative behaviour of the individual.

The study aims to increase understanding and knowledge of motivation; this by examining how the leader experiences her capability to promote employees' work motivation. Also, how employees perceive that the leader influence and enhance their work motivation. Interviews were conducted with a manager and two employees of a government agency in Sweden. The results demonstrate different opinions between manager and employees in the manager's ability to foster motivation in the everyday work. The leader thinks that she promotes her employees work positively and believes that she is giving her employees attention and appreciation.

Previous studies have shown positive results on the use of music as postoperative pain relief. Quantitative studies have examined the effect of music on rated pain and otherparameters such as anxiety, relaxation and blood-pressure. The purpose of this study was to investigate the expectations and experiences of patients and nurses onimplementing music as postoperative pain relief in an orthopedic unitQualitative design and semi-structured interviews were used to examine expectations and experiences. Five patients and five nurses in the unit were interviewed.Four themes developed during the data-analysis. These themes were ?Expectations on music as postoperative pain relief?, ?Experiences of music as postoperative pain relief?,?Effects of music as postoperative pain relief? and ?Continued implementation of musicas postoperative pain relief?.

Studies in Sweden have shown that about 80% of all youth in Sweden have participated in organized sport during their upbringing but at the age of 20 only 50% of these continue. There have been several attempts to understand why youth stop participating in sports but few aimed to understand why they continue. The objective of this study was to examine if there is a difference in motivation between youth (in the ages of 16-20 years) who participate in recreational and elite sports. The study was carried out as a quantitative survey where both recreational (n=35) and elite athletes (n=33) particpated. The study used a Sport Motivation Scale questionnaire translated into Swedish.

An automatic control system for calibration of pressure indicators has been constructed. This control system can be used as a complement to the calibration system located at AerotechTelub, division MainPartner, in Linköping. The calibration system used today contains some not wanted pressure changes, which is compensated by hand today. The new system presented in this report automates the calibrating process and simplifies the calibration. Suitable hardware as motor, controls card and so on have been found and software in the form of Visual Basic program has been developed.

The objectives of this research were to determine whether the natural rattan resources in Sulawesi, Indonesia can cope with the strongly increased harvesting pressure that has occurred over the last centuries. I was furthermore looking for patterns in the rattan population dynamics that might give a hint on how the harvesting system could be improved to ensure a maximum sustainable yield. To answer these questions, I developed an individual-based model to analyse the dynamics of rattan growth in connection with rattan harvests by locals to identify sustainable levels of rattan harvests around villages in Sulawesi, Indonesia. Scenarios with different harvesting intensities were run to compare the change in harvest amount. For a given harvesting pressure, scenarios with a high number of harvesters and a low harvesting frequency had the same effect as scenarios with high harvesting frequencies and a low number of harvesters.