Sökresultat:
4952 Uppsatser om High temperature electronics - Sida 39 av 331
Fältstudiers betydelse för stimulans, delaktighet och inflytande : En studie av hur elever och lärare i Vallentuna gymnasium värderar fältstudier
Schools inspections investigation has shown that most pedagogues are experiencing significant challenges to stimulate students and to invite students to participate and to influence the teaching structure and content. This study is based in the school inspections school questionnaire from 2013 which shows that Vallentuna high school results in two categories stimulation as well as participation and influence gets a low index value compared to all participating school units. Previous research has shown that the field studies creates greater amount of stimulation, increases students? participation and provide experience of a bigger influence. Careful preparations are also important and the right form of field studies.
Faktorer som påverkar Vänerns öppna sandstränder och möjligheterna för hög biologisk mångfald ? med mossor som indikatorer på igenväxning
The sandy beaches of Vänern are threatened by overgrowth and thereby the biodiversity is at high risk to decline. This study is based on an inventory of vegetation of overgrowth character and mosses. The frequency and spread of mosses is perceived as an indication of initial or present overgrowth. External factors that have been taken into consideration are wind-, wave- and ice erosion, the slope of the beach, wear and grade of exposure. The purpose of the investigation is to control the beaches grade of overgrowth and find out which external factor is of most importance for the maintenance of the biotope. The results show that the beaches environment is affected by the slope of the beach, grade of exposure, size, wear and overgrowth.
Outsourcing av IT-verksamhet : Två motalaföretags val
Att använda sig av IT-outsourcing är en fråga som allt fler börjar fundera kring. Givetvis finns det inte ett sätt som är lämpligt för alla företag. Beroende på vilka behov och förutsättningar som finns inom en organisation kan därför olika former eller grader av IT?outsourcing användas. Vid ett eventuellt beslut så är det dock viktigt att beslutsfattarna inte enbart ser till de fördelar som kan vinnas utan också se till de nackdelar som kan följa med ett sådant beslut.
Skattad rörelserädsla före och efter genomgången beteendemedicinsk rehabiliteringskurs. En beskrivande studie.
Abstrakt All around the world there are a lots of people that suffers from chronic pain. One great factor for the devolopment of chronic pain is the phenomen fear-avoidance/kinesophobia that appear to have negative effects on rehabilitation of chronic painproblems. The aim of the present study was to describe and identify how patient that took part in a rehabilitationprogram in year 2004 and 2005 with focus on behaviourchanges estimate their fear-avoidance/kinesophobia and examine if there was any changes estimate fear-avoidance/kinesophobia respectivly before and after and respecivly before and 12 month after the rehabilitationcourse. The study had a describing prospecitive design. Data was collected by the Swedish version of Tampascale for kinesophobia.
Missbruk är ingen bra affärsidé ? en studie om strategiskt CSR-arbete i ölbranschen
PURPOSE: To analyze how companies in the Swedish beer industry strategically workingwith CSR externally in order to increase their legitimacy.METHOD: Qualitative interviews and text analysis to enable data to stakeholder analysis.MATERIAL: Respondent interviews with key individuals, textual analysis of CSR-relateddocuments of the largest beer producers in Sweden.MAIN RESULTS: The study shows that it is possible to distinguish three main categories ofstakeholders to the beer producers. These have various high stakeholder values, wherecustomers are those with the highest value, then consumers and third critics. That these havevarious high values allows different strategic approach to the key issue of how preventivemeasures, that can be said to work against their own products, affects the beer producerslegitimacy among stakeholders..
Reglering av turbins ledskenor i vattenkraftverkmed hjälp av elektriska ställdon
Hydropower is the largest renewable energy source available in today's society. Operation and production is handled by high-tech electronics. This thesis is done on behalf of Statkraft Sweden AB who wants to explore the possibility of replacing the hydraulic cylinder with an electric actuator, generally as well as a case of a small power station on the river Nissan. Whether it is the chaplain or francis turbine vanes are actuated by hydraulic cylinders. Because of Gustavsberg hydropower is inconstant operation, this report is based on power calculations, which are read and computed according to the available hydraulic diagram.
Förebygga ohälsa ? Hur effektiv är lagen som verktyg mot ohälsa?
PURPOSE: To analyze how companies in the Swedish beer industry strategically workingwith CSR externally in order to increase their legitimacy.METHOD: Qualitative interviews and text analysis to enable data to stakeholder analysis.MATERIAL: Respondent interviews with key individuals, textual analysis of CSR-relateddocuments of the largest beer producers in Sweden.MAIN RESULTS: The study shows that it is possible to distinguish three main categories ofstakeholders to the beer producers. These have various high stakeholder values, wherecustomers are those with the highest value, then consumers and third critics. That these havevarious high values allows different strategic approach to the key issue of how preventivemeasures, that can be said to work against their own products, affects the beer producerslegitimacy among stakeholders..
Behövs en litterär kanon? : Jämförande studie baserad på sju gymnasielärares syn på kanons plats i svenskundervisningen
English title: Is a literary canon necessary? A comparative study based on seven senior high school teachers´ different approaches towards the place of canon in the education of Swedish. The purpose of this study is to describe and analyze how seven senior high school teachers relate to a literary canon in Swedish while teaching literature in senior high school, identifying similarities and differences among the teachers? view and opinions about an outspoken formal literary canon and a silent, informal canon.The earlier research opens the door slightly to the American debate and gives insight about the complexity of the concept of canon. The study continues with exploring possible relations to postcolonial theory and didactics. The study reveals that the majority of the concerns against canon are that too much centrally governed education may decrease the motivation and commitment of the teacher. In addition, the dominant canon passivizes a certain variety of literature, thus various points of views. On the other hand, views on the equalizing effect of canon on the level of education and its benefits in increased knowledge of the history of the literature are salient. .
Att reducera ledtiden i en produktion med hög variation och låg volym - En casestudie på Lab.gruppen
Due to increasing product availability and higher demands on fast deliveries, the competition between companies is growing. To be able to satisfy the customers? requests an efficient logistics system with short throughput time is required. By using tools associated with Lean production companies are able to make great improvements in their manufacturing systems and reduce lead times to satisfy customer demands.There are two classifications associated with manufacturing, high variety and low volume (HVLV) and low volume and high variety (LVHV). The general belief is that the concept of Lean production is difficult to implement in a production environment with high variety and low volume due to the concept being adapted to mass production.
Kalciums och magnesiums inverkan på arsenikavdrivningen i virvelbäddsugnen : The influence of calcium and magnesium on the expellation of arsenic in the fluidized bed furnace
In the fluidized bed furnace at Rönnskärsverken, Skelleftehamn, sulphur-containing ore concentrates are roasted in order to remove about 50% of the sulphur in the incoming ore concentrate. This occurs in order to reach the goal of a matte containing 55% of copper in the following smelting process. At the same time as the ore concentrate is partially roasted pollutions as arsenic, antimony and bismuth are expelled. Earlier made thermodynamic calculations of equilibrium suggested that calcium and magnesium form stable compounds with arsenic and thereby inhibit expellation of arsenic in the fluidized bed furnace, an element that is undesired. The purpose of this thesis work was to gain knowledge of the mechanisms behind the formation of these stable arsenic compounds.
Diabetes hos hund : utfodring, motion och vikt som möjliga predisponerande faktorer
This is a study of some risk factors for Diabetes Mellitus (DM) in dogs. As a pilot study it is meant to give information to be used in a planned later, larger and better controlled study. The present study hypothesized that suboptimal feeding (high percentage of homemade and table foods), lack of activity and overweight contribute to the risk of DM. Twenty consecutive dogs diagnosed with DM at the Veterinary University Clinic in Uppsala between 2000 ? 2003 were chosen as the experimental group.
Kolbalansen vid olika skötselstrategier för skogen på Tagels fastighet.
Since the 19th century the concentration of CO2 in the atmosphere hasincreased by 40 percent as an effect of the use of fossil energy sources.Increased concentration of CO2 will likely lead to increased temperature,changes in precipitation, rising sea level and increased frequency of extremeweather like storm events. A step to reduce emissions of CO2 and mitigateclimate change, for the property of Tagel, can be to adopt new silviculturalstrategies and analyse which is the most effective. As a result of that, threescenarios was produced, business-as-usual (BAU), increased set aside landand energy. An introduction of windpower at Tagels estate (property) andeffects on carbon balance was also examined. By using the Heureka systemand LCA-analysis in this study, it showed that the scenario of increased setaside land was the most efficient way to reduce carbon dioxide (CO2)emissions for the analysed period of 100 years.
Curlingföräldrar - Från Traditionella Föräldrastilar till ett Modernt Föräldraskap : Uppfostran i ett Förändrat Samhälle
A study was conducted to investigate the new and frequently discussed concept curling parents. There were no previous studies of curling parenting, and therefore traditional classifications of parenting (Baumrind, 1967, 1980; Maccoby & Martin, 1983) have been used for comparison. Parents (N=140) born between 1959 and 1981 participated. They completed questionnaires to establish their level of curling behaviour. The high Cronbach's alfa confirmed coherence in the curlingcriteria, which implied that curling parents exists as a group.The results confirmed our hypothesis that participants exhibiting high levels of curling behaviour were permissive in their parenting style, had a bad conscience concerning their parenting and wished for more time with their children.
FE safety analysis of a high speed wood planer cutter. An alternative method to achieve the requirements of EN847 standard
In the last decades, high speed cutting has become an attractive technology in the wood industry. The possibility of reducing global costs in addiction with an increase in productivity, were the main reasons for the enlargement of the use of this technology. As usual, these advantages are accompanied by disadvantages that should be carefully analyzed. If on the one hand cutting forces are reduced with increasing cutting speeds, on the other hand, the centrifugal forces affecting the tool are higher. Exposed to such high loads, there is a considerable risk of tool failure that embeds hazards for both machine and workers.
Analys av mellanspänningsnätet i centrala delar av Västerås stad
The dependency of continuous electricity supply is high in the Swedish society today, at the same time no one is willing to pay for a too costly or over dimensioned power distribution system. The owners of the distribution systems are the ones responsible for this balance act of maintaining a high quality of electricity delivery to customers at a reasonable cost.In this master thesis a limited part of the primary distribution system (10 kV), owned by Mälarenergi Elnät AB and located in the city centre of Västerås, was chosen for a deeper analysis of its reliability. Its ability to handle outages of system components (N-1 and N-2 contingency analysis) was investigated to find out potential weak spots and parts of the grid that showed signs of being overdimensioned.The results of the performed simulations showed that in 74 % of the studied N-1 contingencies cases, consisting of outages of a bus bar in a distribution substation, the system could handle this without causing outages in other parts of the grid. For the N-2 contingencies 61 % passed the test. It was also found that one of the two included high voltage substations could alone supply the investigated part of the grid.