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11690 Uppsatser om Filler; comminuted material used in concrete - Sida 7 av 780
Dammsäkerhetsanalys via stabilitetsberäkningar för Långströmmens kraftverk : En jämförelse mellan olika dimensioneringsmetoder
A detailed dam safety evaluation (in Sweden called FDU) was performed in 2009 by WSP where stability control was performed for Långströmmen power plant with associated spillways. This evaluation concluded that stability could not be ensured, and risk of sliding occurred. The evaluation is based entirely on the recommendations outlined in RIDAS, the power companies guidelines for dam safety, and it is clear that extensive renovations are necessary to stabilize the dam.In this work, the stability will also be checked with guidance through new proposals on guidelines for concrete dams sliding stability, ELFORSK?s report 08:59. This report considered the guidelines in RIDAS as oversimplified, both from an international perspective, but also with regard to the current state of knowledge regarding dam safety.
Reflekterande eller reproducerande matematik : en jämförande studie mellan två undervisningsmetoder i matematik, det laborativa och det traditionella
In each classroom there is a teacher with good intentions wanting what´s best for their pupils. But grades and tests in mathematics from 2009 in Sweden shows there is a crack between the subject being taught and the learning child. The purpose with this research is to find an understanding from a teaching and learning perspective of which teaching method is more suitable for teaching and learning mathematics by doing a comparison between two methods. The main question is:What are the advantages and disadvantages of the traditional and the laboratory method of teaching, supported by the two keywords teaching method and learning?This C-paper is based on a qualitative research aiming to gather an in-depth understanding of human behavior.
Komfortsanalys med hänsyn till vibrationer orsakade av människoaktiviteter. : Ett modernt dimensioneringsproblem för huskonstruktörer
Comfort analyses regarding human induced vibrationsIt is not too common among civil engineers in Sweden to perform comfort analyses considering the vibrations caused by human activities. In addition, the Swedish standards lack requirements to be used for comfort analyses in design of floor-systems. The demand for large spans in combination with slender slabs, is today a reason to investigate the floor-system constructions, in order to prevent disturbing vibrations and oscillations.The purpose of this thesis is to create a guide for how a comfort analysis, considering vibrations, should be implemented. Göran Svedenbjörk who is an expert in structural dynamics has been interviewed where he presents his latest project Värtaterminalen and answers some questions about vibrations due to human activities.Floor-systems, consisting of concrete slabs supported by steel or concrete beams, have been investigated with simulations in the finite element program Abaqus. In the simulations, the influence of various factors on the natural frequency of floor-systems and the acceleration level caused by dynamic loads, is studied.
Invandrarkvinnors syn på fördelar och nackdelar med arrangerade äktenskap : en kvalitativ studie
The study?s purpose was to gain comprehension and knowledge about immigrate women?s vision on benefits respective disadvantages with arranged marriages.The study?s question at issues was:(1) How do the women consider that the ideal marriage is suppose to be?(2) How do the women experience that their vision on marriage has changed in a new culture?(3) How do the women consider that parents reasons, around the choice of a partner at arranged marriages?To be able to answer these questions at issues we used a qualitative method where interviews carried out with four immigrated women from four different countries where Islam is widespread religion. Common for these women is that they all are Muslims and that they come from countries where arranged marriages are practiced. They also have concrete experience of arranged marriages, either through themselves or someone they know.Material from interviews was analysed with a help of patriarchal theory and social constructivism. We have also analysed the material with a theory about culture and a theory about groups.
Kv. Tvättstugan, ett flerbostadshus med massiv trästomme : Ett examensarbete om akustik- och brandkrav samt en jämförelse av energi- och fuktaspekter
Title: Kvarteret Tvättstugan, an apartment building with massive wood construction. A thesis about acoustic and fire requirements and a comparison of energy and moisture aspects. Earlier restrictions in the Swedish legislation have resulted that only a small percentage of the apartment buildings that have been built are designed with a massive wood construction. It has been allowed to build unrestricted with wood since 1994 as long as the function of requirements are fulfilled. This change in the rules together with the great environmental benefits of wood has led to that more companies choose to build apartment buildings with wood. One of these companies is Folkhem Production AB.
Hur påverkar byggnadsmaterial av stål en induktiv hörslingas fältstyrka samt frekvensgång?
This research analyzed differences in measurements of magnetic field strength and frequency response in five audio induction loops installed in rooms of wooden construction materials and five audio inductive loops installed in rooms of steel reinforced concrete constructions. The inductive loops were installed at floor level and the measurements were made at the listening height of 1.2m. Measurements of background noise, field strength and frequency response were made at fifteen different measurement points across the room. The research measurements showed that there are differences in field strength and frequency response between these two conditions, whether the audio induction loop is installed in a wooden construction or the audio induction loop is installed in a reinforced concrete construction. The results had a significance level of p=0,05..
Laborativ matematik i förskoleklass - åk 3. : - Vad påverkar lärares arbetssätt?
SAMMANFATTNINGArbetets syfte var att undersöka vilka faktorer det är som påverkar lärare att använda eller inte använda laborativt material i sin matematikundervisning i förskoleklass till och med årskurs 3.Laborativ matematik innebär i detta arbete matematiklektioner där lärare och elever tar hjälp av någon form av konkret material, både vardagsmaterial och pedagogiskt material för att förstå och lösa problem inom ämnesområdet matematik.Undersökningen genomfördes med hjälp av enkäter till elva lärare i förskoleklass till årskurs 3 på tre olika skolor i en och samma kommun.Resultatet visar att samtliga av de lärare som svarade, alltid eller nästan alltid använder laborativt material i sin matematikundervisning, men inom vilka matematiska områden detta sker är varierande.Varför lärare i denna undersökning använder laborativt material eller inte på en lektion påverkas inte av vilken utbildning de har eller om de har någon vidareutbildning i matematik och inte heller av hur länge lärarna har undervisat, utan detta beror enligt lärarna själva på andra faktorer så som: elevens förståelse, tron på metoden, intresse/attityd hos lärare och elevers, tid/lektionens längd och gruppstorlek.Knappt ¾ av lärarna har deltagit i någon form av vidareutbildning i matematik. Alla lärarna som svarade ansåg dock att det laborativa materialet är självklart och nödvändigt för att eleverna ska få en djupare förståelse, då materialet visuellt kan konkretisera detabstrakta i matematiken. Lärarna ansåg också att det laborativa materialet bidrar till att eleverna lär med fler sinnen och att detta i sin tur gör att kunskapen fastnar lättare, matematiken blir även roligare. .
Utveckling av Materialförsörjning : En studie av Sandvik Coromants försörjning av stål
This report is a master thesis performed by Adam Lundin at the company Sandvik Coromants production facility in Gimo. The work started in January 2013 and went on for the duration of 20 weeks, which is equivalent to 30 hp. The project was executed at the department GVR10. The scope of the project was to create a base for improvements in the purchasing process of direct material to the production. The background to the project was that the centralized purchasing department has gone through changes and decision was taken to decentralize the purchasing of direct material to Gimo.
SAMVERKAN STÅL/BETONG : Kontroll av kapacitet hos blockankare i Connector Samverkansbalk
In April 2007 we contacted Lennart Augustsson at Designpartners AB in Västerås. He came up with the idea to investigate and evaluate their construction of a interaction beam, CSB-beam. CSB is short for Connector Interaction beam. The beam is based on a horizontal C-profile of high-tensile steel and in the bottom of the profile are vertical flat bar welded so called block connectors. These block anchorsare also made of hightensilesteel.
EAPPI - det Ekumeniska Följeslagarprogrammet i Palestina och Israel -En deskriptiv utvärdering och reflektion
During last autumn I have been studying the conflict between Israel and Palestine, both through books and at place in the area. The purpose has been to evaluate and reflect over EAPPI`s achievement (Ecumenical Accompaniment Programme in Palestine and Israel) and how it`s related to the goals of the organization. EAPPI is an interesting organization, mainly because it stands as a third part in the conflict. I have used a qualitative method for interviews and observations. The accompaniers, whom I have interviewed, represent three of seven placements in Israel/Palestine.
Projektering av ett småhus med fördjupning i uppvärmningssystem
This report aims to examine the design of a passive house. The design addresses the selection ofmaterial, sizing and selection of both building services systems and building technical features suchas load-bearing framework and moisture control. Interior layout is designed for a family of twoadults and one child.A big part of the report is devoted to an in-depth comparison of three different wall constructions ofpassive house standard. The structures that have been compared are a lightweight timber structure, aheavier concrete structure and a sandwich wall of the brand Weber Leca. The report covers variousaspects such as air flow, wall thickness, the risks associated with the construction, U-value, thermalbridges, power consumption, price, and assembly costs.
Vem sa vad? : En kvantitativ innehållanalys av utrikesdepartementets, regeringens och resebyråernas kriskommunikation efter Tsunamikatastrofen.
AbstractTitle: Who said what? ? A qualitative content analysis regarding the UD?s, the government?s and the travel agencies after the Tsunami disaster.Number of pages: 38Author: Malin HanssonTutor: Peder Hård af SegerstadCourse: Media and Communication Studies DPeriod: Autumn 2006University: Division of Media and Communication, Department of information science, Uppsala UniversityPurpose/Aim: The purpose of the paper is to find out what person said what to the media and public after the tsunami catastrophe. The aim is to find out if there is any difference in how the government and communicators talked, and if those differences agree with the public opinion about these persons.Material/Method: The material is interviews with the relevant people on TV news. The first three days are included and the interviews have been transcribed and counted in sentences. The method is therefore quantitative content analysis.Main results: All of the analysed persons used the category Concrete action the most, which is what they are doing at the moment.
Matematiska arbetsmetoder
The purpose of this study is to give a description of how six pedagogues in the third and fourth grade teaches mathematics and which working methods they use. When using the term working methods it is implied that it can for example be outdoors pedagogic, laboratory material, problem solutions et cetera. This material can both be an everyday material or a pedagogical material. The research was carried through by interviews and observations. Six pedagogues were interviewed in two different districts.
Passivhus : En jämförelse mellan olika byggnadstekniska lösningar för ytterväggar
This report aims to examine the design of a passive house. The design addresses the selection ofmaterial, sizing and selection of both building services systems and building technical features suchas load-bearing framework and moisture control. Interior layout is designed for a family of twoadults and one child.A big part of the report is devoted to an in-depth comparison of three different wall constructions ofpassive house standard. The structures that have been compared are a lightweight timber structure, aheavier concrete structure and a sandwich wall of the brand Weber Leca. The report covers variousaspects such as air flow, wall thickness, the risks associated with the construction, U-value, thermalbridges, power consumption, price, and assembly costs.
Optimering av smidesgeometri för P-fläns på bakre turbinstativ (TEC)
This thesis work has been performed at Volvo Aero Corporation in Trollhättan, at the department of ?hot structures? involving aircraft engine GP7000. The purpose with the study was to investigate the possibility to reduce size of the forging of flanges on the rear turbine frame when purchasing. Thereto examine the parameters that affect the flanges motion during the manufacturing process. The goal was to provide Volvo Aero with foundation to later bring in slimmed forgings.