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2258 Uppsatser om Student dropout rate - Sida 23 av 151
Utveckling av en metod och en utrustning för mätning av bränslesprayers rörelsemängd
A new type of device for measuring thev m& ?rate of fuel sprays from a diesel fuel injector has been developed and the various steps in the development are described. The device works by deflecting all of the sprays from the injector at the same time by using a bell shaped deflector. A load cell consisting of a machined steel part with strain gauges mounted on it measures the resulting force. The shape of the curvature in the deflector bell shape has been evaluated by photographing the flow in a 2D?version of the curve shape.
Läsinlärning : Hur kan processen organiseras?
The purpose of this paper is to examine how teachers choose to work with the teaching of reading and writing skills, how teachers justify their choice of teaching method and how the documentation of student development is being used. This paper also discusses the definition of reading and writing, phonological awareness and how different reading- and writing educational methods can be combined. The gathering of information has been done through a literature review in which I have looked at past research on reading and writing. I have also conducted qualitative interviews with teachers involved in literacy learning. The result of my research shows that it is not possible to determine which literacy learning methods that are most effective.
Sex differences in feeding visit rates in Northern Wheatears Oenanthe oenanthe
AbstractThe Northern Wheatear (Oenanthe oenanthe) is a small insectivorous passerine bird living in open landscapes. Both parents feed the brood of approximately five chicks, but little is known about how each sex allocates their feeding effort. In this study I investigate feeding nest visit differences between male and female Northern Wheatears relative to the age of the chicks, the number of chicks and the quality of the territory for 17 pairs from 2008-2010. Data were collected using automated data loggers to record nest visitation rates during chick feeding, and the sex was determined from nest video cameras. I also examine if the parents? rate of feeding visits changes over the nestling period.
Fortsatt gran eller självföryngrad björk efter stormfällning? : en ekonomisk analys
The southern part of Sweden, Skåne, is frequently exposed to storms causing great damage to Norway spruce (Picea abies L. Karst.) stands. A storm during the winter 1999/2000 raised the attention of the problem. A lot of forest owners got large areas of spruce stands wind thrown during this storm. Can naturally regenerated birch (Betula sp.) be an alternative on these wind-exposed sites? This was the main question I was facing when discussilig the problems with Esben Möller Madsen, Söderåsens forest district.
The aim of this master thesis was to present an economic analysis of Norway spruce versus
birch.
Röjningsförbandets betydelse för avverkningsekonomin i södra Sverige :
The aim of this work is to demonstrate how the net present value (NPV) at the time of the first thinning depends on the spacing after pre-commercial thinning, and show how net value from first thinning in same stand is influenced.
This study is performed with models based on non-distant dependent growth models for single trees. Two different growth models have been used, one for cleaning (pre-commercial thinning) and one for thinning. The first one yields stem density distributed over diameter classes. In the second one, (the thinning model), it is possible to choose when thinning should be done, the thinning method, thinning grade and numbers of thinning.
En analys av lärarhandledningar inom biologiämnet och Lpo 94 : en fråga om begränsad undervisningsvariation?
During our education time, we have heard on several occasions how the high changing rate in the society also influences the education area. That changing process mainly originates from the transform that a school underwent, i.e. the decentralization meaning a delegation of responsibility from a national to local government and the particular school. The main idea that started a changing process goes under the slogan ?a school for everyone?.
Hållfasthetsegenskaper i gjutjärn : tensile properties of cast iron
In the last few years people have become more and more aware of how humanity is affecting the climate. In the direction of reducing the greenhouse gases is to design engines with higher tensile properties and reduced weight, in order to achieve lower fuel consumption and cleaner fuel incineration in today's truck engines.In order to achieve these requirements it?s necessary to increase the combustion pressure in the engine. This requires higher tensile properties and high thermal conductivity of the engine material. The department of Component Technology at the University of Jönköping in collaboration with Volvo Powertrain AB, Scania CV AB and DAROS Piston Rings AB has been commissioned to develop this material and to find knowledge of material properties used in truck engines and piston rings used for marine applications.The purpose with this work is to analyze the tensile properties of a series of cast iron, cast under different metallurgical conditions.Four different series of cast irons have been analyzed from four points of view, carbon concentration, nodularity, amount inoculation and cooling rate.After the tensile test all specimen data was analyzed in a mathematic calculation program called Matlab 2006a.
Aktiesammanställare med teknisk analys och simulation
Websites today only offer simpler form of technical analysis and are not fun to use, therefore student decided to build a website that makes technical analysis a bit more fun by giving user possibility to experiment with settings for technical indicators and also see clear visible results from analysis. Student decided to build website in ASP.NET. Technical indicators for this project only consist of those who give buy and sell-signals via cross-over, no divergence or pattern finding.This project has three questions that define this project. It?s important that there is good functionality so that performing an analysis is perceived as simple, one question is therefore; what functionality for website is needed in order for analysis to be perceived as more simple?Technical analysis is a pretty complex subject and demands an interface that is perceived as easy to understand and easy to use, it?s therefore important that the interface is well designed, second question is therefore; how should the interface be designed to be user-friendly?When systems grow large they often become hard to develop and later on unmaintainable because of the accumulated complexity and dependency between classes, the code is a mess, the last question is therefore; how can the systems complexity be eased with object-oriented design principles?Jakob Nielsens ten heuristics for User Interface Design were used as inspiration for designing the interface for the website.
Hur påverkar ålder och fetthalt laxsmoltens utvandring till havet?
AbstractPrevious studies have shown that wild smolt have 2.5-4.5 times higher survival rate than smolt grown in culture and that starved reared smolt behave more like wild born smolt. The purpose of this project was to study whether there are differences in migration patterns and survival during migration to the coast between wild and reared smolt and between different types of reared smolt.In 2009, 25 smolts in three different groups were tagged with acoustic transmitters: Wild Born, conventionally reared 2-year and 1 ?year old smolt. For the 2010 trial there was also added a group of reared 2 ?year old smolt that were starved before release.
Den pedagogiska kartläggningens betydelse inför åtgärdsprogram : En studie om pedagogers erfarenheter och upplevelser i arbetet med elever i behov av särskilt stöd
It has been shown in various research contexts that action programs do not always work as they should, even though there are clear guidelines on how the action programs should be designed and used. The aim of this study is to illustrate which processes that occur before an action program as well as how these processes lead to action that will give the student the support he or she needs. Through qualitative interviews with eight teachers, I have tried to answer the questions that I created. I have tried to answer my research questions that I have made based on the purpose. The questions are; What type of inquiry will be done if a student risk to not reach the knowledge goals? How will the inquiry support the action program? In what way does the action program support pupils in special needs? The result of my survey show that the survey being done for an action program is very individual-focused and that the mapping rarely shows on the teachers role or school environment to students who fall into special needs.
"Också en ful röst kan beröra" : En studie i elevers och lärares syn på relationen mellan sångteknik och interpretation.
Vocal technique and interpretation are the key elements of voice training. Thepurpose of this article is to investigate what vocal technique and interpretation meanto teachers and students and how they would describe the relationship between thetwo. The questions at issue, intended to be answered in this article, are the following:What is the relationship between vocal technique and interpretation? How should theteaching be structured for the students to experience progress on the musical plane?What role does the teacher have in the musical development of the student?This is a qualitative survey and the methods of investigation are semi-structuredinterviews and classroom observations. Presented in the article are a number ofresearchers and writers whose thoughts on the subjects have gained great importanceto vocal teachers and students, as well as leading the research on the voice and itsfunctions forward to higher grounds.
Sjuksköterskestudenters upplevelser av handledning under verksamhetsförlagd utbildning VFU : en empirisk undersökning
Background: The education for becoming a registered nurse in Sweden includes compulsory time for clinical practice. The clinical education means an essential part in the students? personal development. According to regulation for nurses, a registered nurse has the responsibility to supervise nurse students during their clinical placement.Aim:. The aim of the examination was to describe nurse students´ experiences of supervision during clinical education.Method: The study was an empirical examination based on interviews with seven nurse students.Results: The result showed that nurse students wanted to be seen and treated as colleagues, but not used as labour.
Tungmetaller i lakvatten : avskiljning med mineraliska filtermaterial
Four different kinds of filter-materials with reactive surfaces have been studied concerning their capacity to absorb heavy metals in leachate from a municipal waste deposit. The heavy metals studied were: lead, cadmium, copper, mercury, chromium, nickel and zinc. The leachate contains high levels of dissolved organic carbon (DOC) and has a high pH-value along with a high buffer capacity. These characteristics of the leachate make it difficult to remove pollutants and require efficient filters. The filters that were examined in the report are blast-furnace slag with CaO, sand covered with iron oxides, olivine and nepheline.
Wii Sports och Sport : En jämförelse av fysiska och emotionella skillnader och likheter i träningsspel jämfört med riktig träning
AimThe purpose of this study is to compare the level of activity between playing wii Sports Tennis and wii Sports boxing, and the usual sports, and to see how the two variants are perceived.Issues:- How much strain ratio and energy consumption it gives to exercise wii sports compared with the playing of sport for real?- How do the test participants experience the different tests?- How are the two wii sports games against each other in terms of activity and fitness in the school environment?MethodThis is an experimental study in which 10 test participants (5 men and 5 women) have carried out four different physical tests. The tests consisted of either playing an exergame or playing a sport for 25 minutes. Physical activity was measured during the test using a heart rate monitor. All test participants completed all tests in the same order.
Barnfattigdom 2012 : Ett levande problem i Uppsalas skolor
In this essay we aimed to find how economic scarcity among children and youth presents itself in school, according to how school staff experience it. We have conducted interviews with student welfare staff to hear their experiences of this subject and how the schools try to help these pupils. We have used interpretative phenomenology as a base for our work. We have also used some of this traditions most important notions along with notions of Erving Goffman and Sara Ahmed during our processing off the material. With help from these, we report our most interesting results. We have seen that a lack of resources exists among youth today and that everyone not has easy access to things many of us might take for granted.