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1464 Uppsatser om Waste materials - Sida 62 av 98

Adaptiv stämning : En bedömning av acceptabilitet och tonkvalitetsuppfattning

This thesis presents an adaptive tuning system that can be described as a dynamic Just Intonation tuning system, being compatible with equally tempered instruments. The tuning system is called Hermode Tuning (HMT) and the tuning used as comparison for evaluation is the standardized western tuning, the equal tempered tuning. This study investigates preferences for these two musical tuning systems, depending on whether the tunings are presented on a piano or with woodwind instruments. A listening test was done with students at the Falun Conservatory of Music, including both a vertical listening (intervalls) and a horizontal listening (cadenses and musical compositions) of Hermode tuned musical material. Overall the results showed no significant preferences for either tuning system irrespectively of what instrument it was presented with.

Den viktiga barnlitteraturen : Om förskollärares uppfattningar kring normkritisk barnlitteratur

The purpose of this study is to find out what preschool teachers think about antisocial children's literature. Based on five qualitative interviews with teachers at a preschool that works with a standard critical approach. In order to fulfill my purpose with this study, I focused on how these teachers felt that it was important to use the standard critical children's literature in preschool. I wanted to find out what the teachers' thoughts were on the concept of standard critical children's literature and how and whether they use it in their daily activities. When I analyzed the results of my interviews I used the queer theories that include standard critical pedagogy and literature in preschool.

Produktion av Pyrolysolja från kvistrejekt

Fast pyrolysis is a method for converting biomass into three energy rich products: char, gas and bio-oil, where the latter is most interesting.  Pyrolysis is an endothermic process where biomass is heated in an anaerobic environment and, with the right operating conditions, up to 80 %wt bio-oil can be extracted. Key parameters for fast pyrolysis are: stable reactor temperature (~500°C), short residue time for gas in the reactor (<2 s) and a very high heating rate for the biomass. Today there are several different process solutions for fast pyrolysis, where fluidized beds and rotating cones are most developed. Bio-oil has compared to fossil oil: lower heating value, low pH and also polymerizes with time. Because of this upgrading is desirable for increasing competitiveness.

När strategi blir design : Företags drivkrafter bakom grafiska profilbyten

Graphic profiles are a part of companies? brand expressions. The graphical values reflect the brand values the business wants to convey. They consist of different graphic elements such as logo, company sign, colour schemes, templates, rules, fonts, pictograms, formats and references to how different graphic elements should look, for example, business cards, signs and materials for websites. This thesis aims to examine why firms choose to replace their graphic profiles by studying their underlying motivations.

Bedömningsunderlag för användning av restprodukter i
vägbyggnad: med fördjupning inom aspekten ekologi

Traditionellt sett har vägsektorn främst använt jungfruliga resurser som konstruktionsmaterial. Intresset för alternativa material ökar dock och detta leder till att det blir allt vanligare att restprodukter används som konstruktionsmaterial.´ I dag saknas det enhetliga modeller, med allmän acceptans, för att bedöma en restprodukts lämplighet som konstruktionsmaterial i vägbyggnad. Detta innebär att det i varje enskilt fall tas fram ett bedömningsunderlag som anses vara lämpligt. För att bedöma ett materials lämplighet bör ett faktaunderlag inom en rad olika aspekter samlas in. De aspekter som kan vara aktuella kan delas in i Användning och Omgivning.

Kvinnligt+flicka/manligt+pojke=traditionella könsmönster : en semiotisk bildanalys av grundskolans tidigare års matematikböcker

This essay focuses on the pictures in mathematics books for elementary school. The purpose was to see if images in mathematics books for elementary school show traditional gender roles.The aim of the essay has been broken down into following research questions:Vilka färger förknippar de olika matematikböckerna till pojkar/män respektive flickor/kvinnor?How many times were girls/women and boys/men illustrated in the mathematics books?What behavior is associated with masculinity and femininity?Which colours are associated with boys/men and girls/women in the mathematics books?I used a semiotic image analysis method to study the pictures presented in the mathematics books. The theories in this essay were used to see how society makes girls become girls and boys become boys and in what ways the genders are portrayed in relation to each other. In addition, the theories include the question of whether a specific colour is given to a specific gender? The analysis evidently confirmed that the images in the mathematics books demonstrated traditional gender roles.

Comparative analysis of Thermal Barrier Coatings produced using Suspension and Solution Precursor Feedstock

The research work performed in this thesis has been carried out at the Production Tech-nology Centre where the Thermal Spray research group of University West has its work-shop and labs.This research work has been performed in collaboration with the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad, India.First of all, I would like to express my sincere thanks and gratitude to my supervisors Dr. Nicolaie Markocsan and Dr. Nicholas Curry for their guidance, great support and valuable suggestions without which this work could not have been possible. I would also like to thanks Prof. Per Nylén for keeping faith in me and providing me an opportunity to work at PTC, which is a great place to perform research.

"Barn är viktigare nu på något vis" : En kvalitativ studie om hur fem pedagoger resonerar och praktiskt arbetar med barns inflytande och delaktighet i förskolan

The aim of this study is to investigate into the use of discussions in the classroom to help the pupils develop a deeper understanding of mathematical concepts and operations. The empirical data contain interviews with two teachers and observations from their lessons. The purpose of the interviews was to find out what importance the teachers ascribed to the ability of their pupils to talk about mathematics, and how they organised their classes to encourage mathematical discussions. With the observations, I was able to see the interaction in the classroom and hear discussions between the teacher and the pupils, as well as between the pupils themselves.The interviewed teachers proved to share my own belief in the results of researchers like Malmer (1999) and Löwing (2006) about the importance of verbal discussion, argumentation and reflection during mathematics classes. But convictions derived from the research of others are one thing, the practical application of the wisdom in the classroom another.

Den rättsliga regleringen av avfall: Klassificeringen av avfall och den nya avfallsregleringen i enlighet med EU:s ramdirektiv

Vid tillverkningsprocesser av nya komponenter omvandlas material till antingen en produkt eller restprodukt, varpå restprodukterna hanteras som antingen biprodukt eller avfall. Oavsett karaktärisering är den genererade beståndsdelen föremål för någon form av fortsatt behandling. Vid frågan om restprodukt kan det handla om en åtgärd för avfallshantering, då substanserna saknar funktionella egenskaper för fortsatt användning. Det kan också vara så att avfallet besitter ett kommersiellt värde och kan återanvändas som en råvara i andra anläggnings- och tillverkningsprocesser eller i form av bränsle. Oavsett tillämpad åtgärd krävs tydlig lagstiftning som främjar en gynnsam utveckling och förhindrar uppkomsten av skadliga föroreningar.

Modersmålsundervisning, läs- och skrivutveckling i Sameskolan : Lärares erfarenheter och arbetsformer

The overall aim of the study was to take part of teachers' experiences and work force mother-tongue education and literacy development in the Sámi School. The study was conducted through interviews with twelve teachers who teach at two Sámi schools. The focus has been on looking how to work with native speakers teaching at the Sámi School, what factors promote / hinder students' development of their first or second language, and the importance of collaboration between the schools` various professions work with multilingual students reading and writing skills. Through interviews of various categories of teachers, I have tried to visibility problems of the education of minority language children and their reading and writing skills. I discuss the teaching, the importance and the lack / availability of communication and consensus between different categories of teachers.

Landskapsplanering ur ett hållbarhetsperspektiv :

Environmental problems are accelerating with energy consumption and the release of greenhouse gases as the major issues. This affects landscape planning mostly through environmentally hazardous transportation and heating of buildings. In environmental work, the term "Sustainable development" is often used. This term was coined in the Bruntland report in 1987. A number of frameworks have been developed to clarify the term and to remind the user about relevant aspects of sustainability.

Vilka statsfinansiella effekter erhålls vid ökad produktion av förnybar energi?

BackgroundThis paper is based on an issue raised by the organization Energigas Sverige, which together with the Ministry of Finance has posed the question about the fiscal impact of an increase in biogas production. Since the fiscal effects of an increased biogas production are both positive and negative, due to reduced use of fossil fuels, we want to investigate this further.PurposeThe purpose is to describe and explain the obtained fiscal impacts of an increased biogas production and based on our problem: ?What are the obtained fiscal effects caused by an increase in biogas production?? we could see the following fiscal effects: positive impact on employment, increased revenues of social security contributions and income taxes, reduced unemployment costs and reduced tax revenues on fossil fuels. These effects are summarized in a negative tax revenue of 2,6 billion SEK. Along the summarized negative effect we also accepted one of the two prepared hypotheses, which stated that an increase in biogas production leads to a negative fiscal impact. Design/Methodology/ApproachWe have chosen to work from an Anglo-Saxon scientific tradition and furthermore, we have a positivistic approach when we want to explain the relationship between cause and effect of an increase in biogas production and the following fiscal impacts.

Sund inomhusmiljö Studie av betonggolv och dess ytskikt

Detta examensarbete behandlar ämnet sunda hus. Vi har studerat betongplattan med dess ytskikt för att se dess påverkan på inomhusmiljön. Anledningen till att denna rapport har skrivits är att NCC, i samarbete med Stångåstaden AB, är intresserade av att få reda på materials påverkan på inomhusmiljön. Studien har utförts i Linköping på Kv. Irrblosset vilket uppförs som ett sunt studentboende.

Matematik i förskola : En studie av lek i undervisning

The purpose of my study is to examine how four preschool teachers go about using the term play in children's early mathematical development. In order to fulfill the purpose of this study, I have the following questions:How the preschool teachers visualize mathematics in children?s play?What reflections have the preschool teachers about the importance of play for children's mathematical learning in preschool?How do the preschool teachers see on their own role in the children's play?In this study, I have conducted a semi-structured qualitative interviews based on the interviews with four preschool teachers from various departments in a preschool. I have also conducted some observations to complete my study. Whereas in my analysis of the researched material, I have used Vygotsky's theory.The survey shows that the preschool teachers are aware of the use of mathematical language and concepts in children?s different activities which were conducted daily in the preschool.

Svävare: Konstruktion av hytt till en svävare

 This report will describe a project between two students from Karlstad University and Markus Norström from Hovercraft solutions. The project aim was to develop a cabin for the hovercraft 380TD. The project was divided into two sub parts; one concerning the design of the cabin and one concerning the engineering. Throughout this rapport you can follow the engineering part of the project. The project has followed a systematic product development process resulting in optimized results for material selection and engineering solutions.

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