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1167 Uppsatser om Mathematics and Statistics - Sida 35 av 78
Svinnoptimering VTIS1
The goals of this Bachelors? Thesis were to establish the production loss through the VTIS1 Pasteur at Arla Foods Linköping dairy and then suggest simple but effective solutions to minimize the losses for each production run. If the timeframe allowed it, some of the solutions would be implemented and tested in full production to determine their impact on economic and environmental savings.The very first step of this project was to establish the statistics over what losses there is in the production pipeline through VTIS1, from milk and powders in mixer tanks to finished and packed products in cold storage. Then, when knowing how much product was actually lost and where, those bottlenecks could be pinpointed and examined more closely. At this stage the focus was switched, from the otherwise complicated and broad manufacturing process, to the VTIS1-aggregate, since early data indicated there were quite substantial losses there.In conjunction with this project Arla Foods purchased an absorption photometer-measuring device (OPTEK AS16) that could be inserted straight into the product stream out of VTIS1, allowing real time measurements of its optical density.
Att konstruera nya normer för humanitär intervention : Ansvaret att skydda och interventionen i Libyen
The reason I am writing this essay is due to my curiosity on how children are interested in and how their understanding in geometry is at preschool years.My interest lies in children and arithmetic and especially geometry, which is something I belive that children deal with a great deal in their everyday routines, both in school and at home.What do children do when they work with geometry, and are they aware of what they do? To figure this out, I have taken my findings from three different interviews that I have done atmy preschool with a group of children that have been preselected.I am also curious about whether there is a difference in different types of schools. In this essay I have compared the preschool I work with a Montessori school and a third type of schoolwhere the children spends most of their day´s outdoors called ?Ur och Skur?In my results I can not see any major differences in these three preschools work with mathematics. The childrens knowledge is at a similar level and the work with geometry hasbeen implemented in a similar way..
Minus är inte bara att ta bort : Subtraktion i åk 3
Syftet med denna studie var att undersöka elevers användning av lösningsstrategier i subtraktion samt lärares och läromedlens framställning av dessa, för att kunna komma fram till hur en framgångsrik undervisning i subtraktion, med fokus på lösningsstrategier, kan se ut. Undersökningen genomfördes i tre klasser i åk 3. Metoder i studien var elevenkät, intervju med lärare och läromedelsgranskning. Data bearbetades med hjälp av en egenkonstruerad begreppsmodell utifrån olika lösningsstrategier. Resultatet visar på en större variation av lösningsstrategier i undervisningen än i elevernas uträkningar.
Sound Fence
To fence in pastures for sheep today is a major cost, especially because of the time required when using current methods. What takes most time is starting to fence off a new area, but to maintain a fence is also a continuous effort. The main function is to keep the sheep at the field.! !By interviewing and observing sheep farmers on how they work with fence today and what their problems was, I got a better understanding of the problem. Also looking at a number of other things like the context, statistics on sheep farming, laws and competition mapping gave a wider image. But the most important part in my research occurred when I talked to experts about sheep behavior.
Volume and taper equations for Sitka spruce (Picea sitchensis (Bong.) Carr.), Norway spruce (Picea abies (L.) Karst.) and White spruce (Picea glauca (Moench) Voss) in Iceland
The aim of this study was to evaluate different types of volume and taper equations that can be used to predict single-tree stem volume and stem diameter at any given height along the tree stem for plantation grown Sitka spruce (Picea sitchensis (Bong.) Carr.), Norway spruce (Picea abies (L.) Karst) and White spruce (Picea glauca (Mounch) Voss) in Iceland. A number of published tree volume equations were tested and modified to predict the total stem volumes over bark but three logarithmic equations were taken for more in-depth analysis. Three taper equations were tested. Two variable-exponent equations (Kozak 1997, Kozak 2004) and one exponential equation described by Biging (1984). Data from a total of 617 sample trees were used in this study, collected from stands in various parts of the country and present different types of stands growing in different soil types and cover most of the site conditions suitable for forestry in Iceland.
Självmord och självskadebeteende : en studie om självmord och självskadebeteende inom Svensk kriminalvård 2002- 2012.
During the period 2002-2012, 74 people committed suicide within the Swedish judicial system. During the same period of time 702 self-destructive actions and suicide attempts were reported. The purpose of this work was to investigate and illuminate the causes which are responsible for individuals committing suicide while in custody or in prison. The theory of this work is an ethnographic study of a special social context. A study of literature, statistics and earlier scientific research was used in this study.
Volyminspirerat arbete i förskoleklassen - en prioriteringsfråga? : En studie om förskolelärares uppfattningar om volyminspirerat arbete
Syftet med denna studie är att få ökad insikt om hur förskolelärare uppfattar sitt eget arbete med att främja barns begreppsutveckling inom området volym. Syftet med studien är även att få ökad kunskap om vilka aspekter som påverkar den dagliga verksamheten inom området volym i förskoleklassen. Denna undersökning är baserad på intervjuer med sex förskolelärare, materialet har bearbetats och kategoriserats under fem stycken huvudrubriker som belyser olika aspekter av hur förskolelärarna uppfattar att de arbetar med området volym i förskoleklassen. Vi har valt att belysa denna undersökning ur ett sociokulturellt perspektiv. I vår analys har vi kommit fram till att det finns många olika aspekter som påverkar utformandet av verksamheten i förskoleklassen.
Black-Scholes : En prissättningsmodell för optioner
This paper aims to derive the Black-Scholes equation for readers without advanced knowledge in finance and mathematics. To succeed, this paper contains a theoretical chapter in which concepts such as options, interest rate, differential equations and stochastic variable are explained. This paper also presents the theory of stochastic processes such as the Wiener process and Ito process. In the chapter on the Black-Scholes model the Ito process is used to describe price of shares and with the help of Ito's lemma Black-Scholes equation can be derived. In the paper, assumptions are listed that apply to the Black-Scholes model and then uses the Black-Scholes equation to calculate the price of a European call option.
Textens inverkan på matematiska uppgifter : En undersökning om elevers textförståelse av matematikuppgifter i årskurs 5
The purpose of this study is to show the importance of task texts for students in grades 5 when solving mathematical problems. It was conducted in a class 5 (where the children are 11 years old). The pupils were assigned two different tests with mathematical problems; one where the problems were described in text and one where the problems were presented with numbers and mathematical signs. Previously done research, done on bilingual children, (Bernardo, 2002) shows that pupils tend to do better on mathematical tests when no text is presented. My research supports that theory even though the correlation is not that strong.
SIMMA MED HAJAR ? en studie av kvinnliga journalisters arbetssituation i Kapstaden ur ett genusperspektiv
Authors: Sofia Eriksson and Malin Wändahl Title: To swim with sharks --? a qualitative study of female journalists work situation in Cape Town due to gender Level: Bachelor of Journalism. Autumn 2013 Location: University of Gothenburg Although the distribution of sex in the South African media houses is equal, research shows that the work conditions for women and men are unequal. Therefore, we have studied how the situation looks like beyond the statistics. The aim of our thesis is to examine, due to gender, how female journalists in Cape Town experience and cope with their work situation in a profession traditionally dominated by men.
Lärobokens roll i matematikundervisningen. : Allmändidaktisk tillämpning av van Hieles teorier vid introduktion av algebra.
Detta arbete är en textanalys av hur några svenska läroböcker i matematik introducerar algebra speglat i van Hieles teorier om tankenivåer vid inlärning. Van Hieles teorier poängterar språket som kunskapsbärare i matematik vilket går som en röd tråd genom analysen. Generellt börjar läroböckerna på van Hieles tankenivå 3. Enligt van Hieles teorier borde undervisningen i algebra börja på nivå 1, vilket då blir lärarens uppgift att göra utan stöd av matematikboken. Förslag på arbetssätt för nivå 1 och 2 ingår..
Räknar vi med barnboken? : Ett tillfälle för läraren att prata matematik med förskolebarn utifrån boken Fia och djuren.
Syftet med arbete är att undersöka hur lärare använder sig av barnboken Fia och djuren (Kruusval 2007) för att synliggöra matematik för barn i åldern 5-6 år på förskolan. Vi observerade lärarna i en högläsningssituation, därefter intervjuade vi dem för att få en djupare bild av hur de tänkte kring högläsning och matematik. Resultatet på undersökningen visar att lärarnas kunskaper och erfarenheter kring ämnet matematik har en avgörande betydelse för vilken form av matematik som synliggörs i högläsningen. Resultatet visar också att det är av stor vikt att lärarna utmanar, uppmuntrar, stödjer och samtalar med barnen om den matematik som är både synlig och dold i boken. .
Hur mår svenska lärare och varför? : En kvantitativ studie på stratifierad klusterdata
Denna uppsats undersöker vad som påverkar lärares upplevda problem med arbetsförhållanden samt deras upplevda arbetstillfredsställelse. Tidigare forskning visar att faktorer som kön, ålder samt upplevt stöd från rektorn ofta är prediktorer för dessa begrepp. Datan är hämtad från Trends in International Mathematics and Science Study (TIMSS) från 2011. Utifrån dessa data utförs multipel regression samt jämförelser av medelvärden och andelar med hjälp av makron för att söka svar på frågeställningarna. Studien finner bland annat att kön, elevers socioekonomiska bakgrund och skolans betoning på akademisk framgång har betydelse för lärares upplevelser..
Kulturskolan i integrationens kraftfält
Title: Access to cultural education in a multi-ethnical context.The right to dance and play an instrument, to paint and work with film is taken for granted by many children in Malmoe today. The agenda explicitely phrases the intent of the publicly financed schools of art for children to reflect the multi-ethnic demographics of the city. Public community music schools of today, incorporate classes in all forms of art and are called "Culture schools". There is a long tradition of teaching and making music to lean on as a music teacher in Sweden. This paper tries to explore how these rights are expressed in the governing documents of the Culture school of Malmoe.
Resurscentrum Kulan : En kvalitativ undersökning ifall Kulan ger en positiv effekt på inlärningen enligt lärarna och eleverna
The objective with this essay is to establish the benefits of inserting media as an obligatory topic in the upper secondary school. In order to succeed with this I will not only type this essay I will also produce a medial production in the form of a film. I have interviewed two senior masters on Södertörns College where I have reviewed different questions that relate to the matter's weight in school values and the society. In the study I will also reflect over existing research within the area and to link these to the issue and those interviewed opinions. In the film I also present statistics within the communication technology's increase and an explanation how one obligatory topic becomes an obligatory topic..