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1047 Uppsatser om Hexagonal Close Packing - Sida 61 av 70

Alternativa dagvattenlösningar för nyexploateringsområden med avseende på substansflöden

Denna rapport beskriver arbetet med utvecklingen av en ny modell för kaplanturbiner. Utvecklingen bygger på två kopplade differentialekvationer som under arbetets gång anpassats och implementerats i turbinmodellen.Modellen beskriver hur vattenflöde och turbinmoment påverkas av avvikelsen från den optimala kombineringskurvan för vinklarna på turbinens ledskena och löphjul, och är anpassad för ett referensaggregat med tillgängliga provdata. Även övriga enheter i vattenkraftaggregatet modelleras och sätts samman med frekvensregulator och elnät för att simulera aggregatets reglerstabilitet i önätsdrift.Verifieringen av turbinmodellen sker genom försök att återskapa de befintliga verkningsgradskurvorna med hjälp av modellen. Resultatet visar en god följning av de verkliga kurvformerna, dock med något lägre maximal verkningsgrad.Verifieringen av önätmodellen sker genom att prova stabiliteten i nätfrekvens och turbineffekt vid stegpålastningar. Resultatet ger en stabilare reglerstabilitet än i verkligheten, men uppfyller ändå förväntningarna på en fungerande modell.This report describes the development of a new kaplan turbine model.

Svartedalens naturreservat : en social rikedom värd att utveckla!

Svartedalens nature reserve a social richness worth develop. The nature reserve of Svartedalen is an area of high biological and social values. The reserve is located close to several densely populated areas. The reserve has been classified as a national area of interest for nature conservation and outdoor life, and as a Natura 2000 area according to both the bird- and habitat directions. The reserve is the largest landarea in Västra Götaland, 3 410 hectares, where a resolution has been made about all these forms of protection. The foundation Skogssällskapet owns 1 956 hectares of the reserve, at 1 384 hectares of the property they pursue FSC-certified silver culture, according to current management plan.

"Har jag verkligen valt rätt, det var bara killar" : - en studie om elever som gjort ett könsotraditionellt gymnasieval

For centuries, the human body has been used as a mean to project the norms, moral values and aesthetic preferences that exist throughout society. It has been controlled through constrictive fashion, family and social virtues and through how we perceive gender and sexuality. This essay strives to show, not only how the body and the aesthetic values coexist, but also how they work together and influence each other, with the body as the aesthetic medium. To do this, Michel Foucault?s writings of sexuality and his theories on morality and discipline, as well as Judith Butler?s works on normativity and performativity are being used.

Optimering av produktionstidsplan : Studie baserad på implementering av ny planeringsteknik i Peab Sverige AB

Now a day?s there is dramatic change from traditional to digital information processing in construction industry. This change can be visualized in the project concept stage where it now has accessibility to join all the data in one place. Location-based planning technique simplifies scheduling by visualizing the schedule efficiently and has many advantages such as might shortened the project period by about 10 - 20 % if the company uses location-based technology, reducing risks in many ways by maintaining production continuity and identify collisions between things etc. Vico Office software has been used for Location based planning technique and in this thesis.The purpose of this thesis work was to demonstrate how location -based planning technology change the scheduling stage in Peab, potentially reducing the project time.

Ökad användning av biodrivmedel i vägtransportsektorn : en styrmedelsanalys

The Swedish road transport sector relies almost completely on fossil fuels. In 2007, as much as 96 percent of the total sales of fuels was made up of petrol and diesel, while at the same time the share of total emissions of greenhouse gases in Sweden that came from road transports amounted to close to 30 per cent. Sweden is by no means worse off than any other European country in these respects. In order to address the questions of high oil dependence and CO2 emissions the European Commission has proposed a reinforcement of the legislative framework, with a 10 percent minimum for the market share of biofuels in 2020. Furthermore, the proposed target is binding for the member states, unlike the current voluntary target of 5.75 percent by 2010. More than doubling the usage of biofuels in only a bit more than a decade will most likely not be possible without policy interventions.

Återvinning av skönlitteratur - Återvinningsverktygens anpassning efter användares sökbeteenden : En fallstudie på Trelleborgs bibliotek

Traditionally the content of fiction has not been described, analyzed, classified and/or indexed to the same extent as non-fiction. As a consequence, this lack of content analysis has resulted in unsatisfactory fiction retrieval in relation to users seeking and search behaviour. This fact is why this Master s thesis is written. The total of library users' seeking and search behaviour is investigated in order to suggest methods to improve user adapted fiction retrieval tools. Suggesting relevant fiction retrieval tools corresponding to users' seeking/search behaviour is another aim of the study.

Populärmusik, konstmusik eller bara musik? : En undersökning av konstmusikaliska inslag i tre populärmusikaliska verk

Det är inte ovanligt att viss rock- och annan populärmusik tillskrivs konstnärliga ambitioner, eller förses med epitet som "konstnärlig" och "konstmusikalisk". Sällan utvecklas emellertid på vilket sätt detta konstnärliga tar sig uttryck. Uppsatsens syfte är att musikanalytiskt undersöka vad som kan motivera formuleringarna och om de kan anses adekvata. Materialet för undersökningen är tre verk/låtar ur rockgenren, som beskrivits med ovanstående begrepp: Close to the Edge med gruppen Yes från 1972, Sense of Doubt med David Bowie från 1977 och Sleep med gruppen Godspeed You! Black Emperor från 2000. Metoden är den auditiva musikanalysen, vilket innebär att analysen utgår från ett aktivt lyssnande på musikens förlopp.

Tillväxtmönster och åldersstrukturer hos opåverkade bestånd av strömlevande Arktisk harr i Sibirien :

It is hard to find streaming waters where humans haven?t affected the fish populations or the running water it self. In many streams the fish populations are over harvested and this results in a lack of older and larger fish. This is also the situation for many populations of Grayling (Thymallus spp.). To be able to develop management plans and to perform actions that improve the situation for the grayling, it is therefore crucial to know what natural, by humans unaffected populations look like.

Den dominanta rollen i en barngrupp

Syftet med vår undersökning är att övergripande synliggöra den dominanta roll ett barn kan ha eller få i en grupp. Vi valde att observera i två olika klasser i de lägre åldrarna på en F-6 skola. För att få syn på den dominanta rollens egenskaper så använde vi oss av bland annat videoinspelning. Videoinspelningen gav oss material som kom så nära den naturliga miljön i gruppen som möjligt. Först när vi började observera såg vi inte några av de egenskaper som vi trodde karaktäriserade den dominanta rollen.

Gimo bruksområde - inventering och riskklassning enligt MIFO fas 1 :

This master thesis encompasses an inventory of the older industrial community of Gimo. Investigations of the contamination situation for each industrial area were done. A risk classification according to the Swedish Environmental Protection Agency?s ?Method of Surveying Contaminated Sites?, phase one, followed. The risk classification was done on areas of Iron Work, a rockwool industry and a landfill. Gimo have had iron manufacturing from 1615 until 1945. Gimo have had two blast-furnaces and two smithies periodically.

Pallhantering på Findus - Flöden , problematik och alternativ

The purpose of my task was to map the pallet flows at Findus and put together as well as analyze the problems. My work has also included finding out what alternatives there are to the present pallet exchange system and suggest measures to reduce the problems.The problems can be divided into poor quality and hygiene issues. The poor quality, for instance poor strength is due to arbitrary judgements and the fact that there are companies that make a system of manufacturing forged pallets of an inferior quality compared to the EUR-pallets. These pallets are marked with stamps more or less similar to the EUR-mark and taken into the exchange system. Of course there are rules how to judge a pallet but these rules are many and sometimes indistinct and there are a lot of marks to keep track of.The most dangerous part is when the pallets lack the prescribed carrying capacity.

Värmeåtervinning ur spillvatten i befintliga flerbostadshus

Drain water heat recovery is an uncommon measure in multi-unit residential buildings. There istechnology available for the purpose but the knowing and experience of the heat recovery systems islittle. The purpose of this thesis is to evaluate the future potential of drain water heat recovery inmulti-unit residential buildings.A major part of the multi-unit residential buildings in Sweden were built during modernismen andrekordåren (1940?1975). Many of the buildings have worn out drain and water supply systems andmany are in need of a general refurbishment.

ANALYS AV FLERBOSTADSHUS : Med inriktning på ytfördelningen över tiden

Currently, there are no clear statistics on how the floor plan and room size in apartment buildings has changed over time since the postwar period. The statistics available is average area per apartment which can be found on Statistics Sweden's website. This report has the aim to increase knowledge about how the Swedish home have changed over time.The questions that the report will answer are:For apartment buildings, how has the living area been distributed since the postwar period?Why has the area distribution changed over time?A survey of the houses built during 1950-2014 was made before questions could be answered. A case study was also made which a total of 90 apartments were analyzed and divided into three eras, the people´s home, the million programme and the neomodernism.

Tidernas Midsommarvaka : En studie av Hugo Alfvéns rapsodi och tre olika inspelningar som historiska källor

Rami Kangas: Tidernas Midsommarvaka. En studie av Hugo Alfvéns rapsodi och tre olika inspelningar som historiska källor. [A Midsummervigil of all times. A study of Hugo Alfvén´s rhapsody and three different recordings as historical sources.] Uppsala: Musikvetenskap, 1999. C- uppsats (60 p).This essay has two purposes.

Minskad utbredning av apollofjäril, Parnassius apollo, i södra Stockholms län : En studie av möjliga faktorer utifrån artens habitatkrav

The Apollo butterfly, Parnassius apollo, is categorized as Near Threatened (NT) in IUCN Red List. Today in Sweden it is found only in strongly fragmentized populations. In the county of Stockholm, P. apollo exists exclusively in some islands of the archipelago and with one mainland population in Stora Vika. This study has the purpose of expanding the knowledge of the local conditions for the butterfly in the south parts of the county of Stockholm and thereby contributes to a sustainable land management that can preserve the Apollo butterfly.A comparative study was done between areas where the butterfly today have: a stable population (Stora Vika, Utö and Ålö), has disappeared (Muskö and Yxlö) or is strongly declining (north part of Ornö).

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