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11987 Uppsatser om Material improvement, - Sida 28 av 800

Att arbeta laborativt : Ett arbete om laborativt material riktat till addition

Abstract The purpose of this degree project is to examine what impact working with physical objects has on children?s learning process concerning addition. We want to explore what addition strategies can be exercised using the game ?Twice as much?. We have observed children in school year 1.

Termisk hantering av litium-jon- batterier i elektriska drivsystem

The automotive market is currently undergoing a historical change where stricter emission legislations and ever increasing fuel costs have intensified the search for effective alternatives to the conventional internal combustion engine, which has resulted in a substantial trend towards electrification of powertrains. Storage of electrical energy is the fundamental component in this technology where the lithium-ion batteries are currently considered as the most appropriate solution. Lithium-ion batteries, however, as other types of batteries, can only be used efficiently and durably within a specific temperature range.This Master thesis has been carried out in collaboration with Electroengine in Sweden AB, situated in Uppsala, which has an ongoing project regarding development of a modular battery system for electric powertrains. The project is at a stage where an initial prototype has been developed which provides the foundation for this thesis. The study has addressed the battery system performance from a thermal perspective, in order to validate the ability of the system to create a thermally serviceable environment for the lithium-ion battery cells.

Utvärdering av kalkstens egenskaper med laboratorie- och fältmetoder.

A pavement construction designed to cope with the different type of traffic loads; it is exposed to and at the same time it can resist the effect of the climate. A road structure consists of sub- and superstructure which is divided by a boundary known as terrace. During the construction of unbound layers (base course and sub-base course) in the superstructure, it is always ensured that the material meet the requirements for bearing capacity and the degree of compaction. These parameters are controlled by various laboratory tests and control methods. To obtain increased knowledge of the material and improve the quality of the compaction in the field, it is necessary to perform laboratory tests in order to determine material properties.A base course material 0/ 32 mm limestone from Gotland (Hejdeby) was investigated in this study.

Materialet i förskolan

Denna undersökning belyser materialet, dess placering och användning i förskolan. Studien är genomförd ur ett lärarperspektiv för att ge en förståelse hur material bör placeras för att ge barnen i förskolan tillgång till det material som finns där. Vidare undersöker studien pedagogernas användning av materialet i arbetet med barnen i förskolan och pedagogers uppfattning om dess placering och tillgänglighet. Syftet har varit att undersöka hur pedagoger i arbetet med barnen använder materialet i förskolan och hur det är placerat. Vidare har syftet varit att undersöka om det finns idéer kring materialets placering och om dessa har diskuterats bland pedagogerna. Som metod för denna undersökning har intervjuer av ett arbetslag använts som underlag. Detta för att se om idéer kring materialets betydelse förekommer hos pedagogerna och för att undersöka hur det placeras. En slutsats av undersökningen visar att en viss diskussion kring materialet och dess placering verkar förekomma hos pedagogerna sinsemellan.

Sjuksköterskans erfarenheter av mötet med patienter med ett annat modersmål : - En litteraturöversikt

Background: Running economy is one of the key factors to achieve top performance in endurance events. Little evidence exists for improving running economy using high-intensity interval training while running. Objectives: The purpose of this study was to examine how HIIT affects running economy and VO2max. Method: 14 well-trained athletes (age 35 ± 8,9 years, height 175 ± 11,7 cm and weight 69 ± 12,2 kg) were divided into two separate groups (HIIT and Control). HIIT group performed 3 HIIT exercises every week for 4 weeks and Control group continued with their separate training programs consisting of mostly traditional endurance training. Results: Running economy showed no improvement in HIIT (pre 38,62 and post 38,62 ml/kg/min, p=1.00) but Control improved (pre 45,41 and post 43,37 ml/kg/min, p=0,03). VO2max decreased in HIIT (mean 61,32 to 60,84 ml/kg/min) and in Control (mean 61,99 to 58,47 ml/kg/min)..

HIIT och dess effekt på löpekonomi hos vältränade löpare och triatleter

Background: Running economy is one of the key factors to achieve top performance in endurance events. Little evidence exists for improving running economy using high-intensity interval training while running. Objectives: The purpose of this study was to examine how HIIT affects running economy and VO2max. Method: 14 well-trained athletes (age 35 ± 8,9 years, height 175 ± 11,7 cm and weight 69 ± 12,2 kg) were divided into two separate groups (HIIT and Control). HIIT group performed 3 HIIT exercises every week for 4 weeks and Control group continued with their separate training programs consisting of mostly traditional endurance training. Results: Running economy showed no improvement in HIIT (pre 38,62 and post 38,62 ml/kg/min, p=1.00) but Control improved (pre 45,41 and post 43,37 ml/kg/min, p=0,03). VO2max decreased in HIIT (mean 61,32 to 60,84 ml/kg/min) and in Control (mean 61,99 to 58,47 ml/kg/min)..

Förskolegården : Möjligheter, begränsningar och platser

Examensarbetet Förskolegården ? möjligheter, begränsningar och platser, har som syfte att belysa frågorna: Vad väljer barnen att göra på förskolegården? Vilka möjligheter finns på förskolegården? Vilka begränsningar finns på förskolegården? och Vilka är barnens platser på förskolegården? Som hjälp för att belysa dessa frågor har observationer och barnsamtal genomförts på en förskola. Resultatet visar att barnen är sysselsatta på olika sätt, på förskolegården men med en stor övervikt av fysiska aktiviteter som att springa och klättra. Andra intressanta aktiviteter som resultatet visar är hur barn använder och manipulerar material. Möjligheter och begränsningar vi såg i resultatet handlar om regler, förskollärares förhållningssätt och tillgång till material samt gårdens utformning. På grund av förskolegårdens tillgång till naturmaterial var visst material, såsom ekollon och pinnar, alltid tillgängligt.

Barnboksskrivande : - En kvalitativ studie om framställande ochpublicering av barnböcker

The purpose of this study is to investigate how a children's book is suggested to be prepared in order to be accepted for publication by a publishing house in Sweden today.My questions was first to clarify the concept of a "children's book". Secondly, to understand if there are any guidelines to follow regarding the design and illustration of a children´s book, and how to proceed with the best chances of getting a mauscript published.To answer the question, I have chosen to use a qualitative method containing questionnaire items involving eleven Swedish publishers of children's literature.My results show that children's books includes all literature that has an target audience of people between 0-18 years of age. The most important thing is that the book's material is appropriate to the target group's level of mental perceptions and emotional competence. The material which then is submitted to the publisher will need to be of the highest quality and the author must investigate a consistent niche in order to submit the material to a publisher..

Analys av tidsåtgång vid montering av aggregat på Haldex Barnes Hydraules

Haldex Barnes Hydraulics (HBH) is a company which produces hydraulic aggregates for use in forklifts, construction equipment, and trucks. The last two years the company has expanded. This has lead to an insufficient production of aggregates. Thus wishes HBH to increase their production without making to large investments.This report includes a now-state analysis of the problems and where they are. From this a further analysis of possible improvements are made.HBH works mainly with assembling and this is made manually.

Hur integrerar man föräldrarna i matematikundervisningen?

Syftet med detta arbete är att utforma ett material där matematikundervisningens mål och arbetssätt tydliggörs för föräldrarna; detta för att föräldrarna ska bli mer positiva till undervisningen och därmed påverka sina barn positivt. Vi har på två skolor i södra Sverige genomfört en enkätundersökning med 49 elever i skolår 4 och deras föräldrar. Undersökningen visar att föräldrar inte är insatta i matematikundervisningen, att de vill ha mer information om undervisningens mål och arbetssätt samt hur de kan hjälpa sina barns matematik-inlärning. Denna information vill de ha i form av brev och träffar. Vi har utformat ett material för hur informationsträff och ?brev kan läggas upp och vad de kan innehålla.

Teknik och barnböcker : hur kan tekniska system synliggöras genom sagoberättande

SAMMANFATTNINGDetta examensarbete är baserat på en uppgift från Small Domestic Appliances (småhushållsprodukter) på Electrolux. Arbetet har handlat om att få in mer naturliga materialmed ?premium? känsla i deras produkter, annat än plast och rostfritt stål.Materialundersökningen har inkluderat: glas, trä, keramik och dekorativa tillämpningarför metall och plast. Hur en användare upplever ett material har också undersökts.Information har samlats in i två undersökningar; en om trender, marknad ochkonkurrenter samt en om material, leverantörer, tillverknings- och ytbehandlingsmetoder.Tre subjektiva test har gjorts på taktilitet för att få reda på hur vissa material upplevs avanvändare. Testerna utfördes med hjälp av materialprover, frågeformulär ochtestpersoner.Ett objektivt test på friktion utfördes också där friktionskoefficienten mellan ett materialsyta och fingertopparna räknades ut.

Cementstabilisering av Biltemas andra lagerbyggnad i Halmstad

This is a technical report about cement stabilization in general and the stabilizationprocess during the construction of a warehouse in Halmstad, Sweden in particular and iswritten at the section for economy and technology at Halmstad University incollaboration with NCC Anläggning.NCC encountered variations in compression strength in the stabilized material on the firstwarehouse that they constructed for the company Biltema. In our report we used thestabilization process of the second warehouse for the same company as a reference todetermine what could be done to get a more homogeneous result for future projects.We also looked in to what testing method is the most suitable to determine the result ofthe stabilization.After interviews with people involved in the process and visits on the work site we havecome to the conclusion that the most probable cause to the variations in compressionstrength is segregation in the ballast material. This segregation can occur in severaldifferent occasions in the process such as during the production, transportation andhandling on the work site.Other causes for the variation can be improper compaction, overlapping stabilization insome places and different duration of hardening of the samples that are tested.The best way to do in situ test of the stabilized material is to do seismic investigations asthose are non-destructive tests in comparison to taking core samples and you can discoverany cracks or air bubbles in the material..

Finns det förbättringspotential inom vårdhygien på isoleringsavdelningar för smådjur i Sverige?

Aim: The aim of this paper was to investigate whether scientific evidence exists to improve, of students? perceived, insufficient infection control in isolation facilities in companion animal hospitals in Sweden. Material and methods: A question was emailed to the students in the last year of the animal nursing program at SLU in the spring 2012 to get their view of perceived insufficient infection control. A literature study was thereafter preformed using the search engine Web of Knowledge. Results: The students reported several perceived shortcomings which were divided into five categories: basal hygiene, isolation routines, cleaning and disinfection, patient flow and other. Studies supporting that the shortcomings perceived by the students also exist in human health care and to some extent in animal clinics and hospitals were found. Furthermore, scientific evidence that improved hand hygiene, glove procedures and cleaning and disinfection reduces the risk of nosocomial infections in humans was reported. Conclusion: There is not a lot of research performed in the area of infection control in animal nursing.

Hot och möjligheter vid expandering - en studie av småföretagare i Gävleborg

The purpose with this essay is to enlighten the small business´ existence at times of expansion, identify threats and possibilities and also to try to find ways to encourage growth in the small business.To answer our purpose we carried out a literature study to later implement six interviews with small business leaders. We separated the companies into three categories; small business without employees, small business with 2-5 employees and small business with 6-10 employees.We confirm that the main reason why small business leaders think both once and twice before hireing new labour force are because of the high costs. The change in government has so far not given the small business what was promised, but there is still hope for improvement and simplification.The economic part of owning a company has been pointed out as the greatest threat in relation with expansion and the big responsibility in another persons possibilities to earn his/her living is also burdensome. The possibility to take on more work increases with the number of workers, which is positive..

Lärarna och Studi.se : En studie av lärares uppfattningar om användande av det digitala läromedlet Studi.se

This study is a thesis project for the program Civilingenjör och Lärare at KTH. The study was conducted in spring 2014 in collaboration with Komplementskolan AB which has developed the educational material Studi.se, the focal point of this study.The overall aim of the study is to increase the knowledge of the participant teachers? conception and use of the educational material Studi.se. The second purpose is to increase knowledge about the forms of use some of these teachers apply or claim to apply when using Studi.se. Theoretical framework used is constructivism and the notions of Piaget: adaptation, assimilation and accommodation.

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