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2188 Uppsatser om Hydropower reservoirs; dam safety; erosion protection; waves; simulation; MIKE 21 Spectral Wave - Sida 61 av 146
Modellering av hydrauliskt aktuatorsystem
This report treats a Master Thesis performed at Scania CV AB. The task was to create a computer model of a hydraulic actuator system in the software AVL Hydsim. The system consists of two spring-loaded masses with surrounding hydraulic components. The purpose of the model is to study phenomenon and problems in the system, as well as to be a support in the development of the system. It is not supposed to be used to study absolute values in its current form.
Förebyggande Brandskydd
The number of residential fires has not declined sufficiently since the smoke alarm entranced the Swedish homes, fires lead to devastating consequences in which possessions, homes and worst of all human lives are at stake. Every year, about 80 people get killed and more than 500 get´s injured in residential fires, often due to lack of safety equipment. The number of fires caused by electrical appliances has risen and taken over a period of ten years the fire caused by a forgotten stove has increased by 70 percent. Preventing the risk that a fire would start on the stove would saves money, worry and most importantly, lives..
Optimering av multiprocessorsystem med hjälp av schemaläggning
A well known optimization-problem of multiprocessor system is scheduling of tasks. In this paper I use a variant of previous known algoritm, (Fast Critical Path) for scheduling real-time tasks on a multiprocessor system. This is made in a simulation study in MATLAB. The system architecture is assumed to be a MIMD- machine, (Multiple Instruction stream Multiple Data stream) with bus-typologi and message-architecture. Scheduling was made on this system where the number of processors varying from five to ten.
Kv. Grillen 6 i Sandviken : Förslag till verksamhet för
Rotskärsskolan is located in Skutskär, Älvkarleby municipality and the school conducted today consists of lower secondary. The school was built in the early 1960s and contains three buildings. Today there is a great need for reconstruction of Rotskärsskolan, when the premises are worn out and not suitable for today's education. It must therefore be a phased change involving all the school buildings, starting in the winter of 2008/2009.Our degree project involves one of these buildings, called house F. This building will, by a recent decision, be adjusted for classes from preschool up to grade five, special school and leisure activities when some of the municipality's schools will consolidate.
Matförgiftad? Kanske ett införande av Smiley system i Sverige skulle kunna hjälpa dig?
Most of us sometimes in life visit a restaurant to relax and eat some good food. In that case, we trust that the food they are serving is of good quality and safe which prevent food poisoning. As a consumer you mostly do not have any insight what?s happening in the kitchen at the restaurant. What is really going on when they prepare the food? An introduction of the Smiley system could help you as a consumer in the choice of restaurant.
Aggregatstabilitet, jordbearbetning och fosforförluster i ett typområde på jordbruksmark :
Large amounts of phosphorus (P) are lost from the arable land due to water erosion. Both phosphorus attached to particles and dissolved phosphorus (mainly phosphate) are transported away with drainage-water and surface runoff. Good soil structure is important in minimizing these losses.
In this study, soils from 50 fields were analysed with respect to aggregate stability as measured by dispersion of clay together with the content of total phosphorus (TotP), particulate phosphorus (PP) and phosphate phosphorus (PO4P) in the water phase. All soils were clay soils with clay content varying between 21 and 54%.
Bilder av barndom : Hur makt och ålder framställs i sex nutida svenska bilderböcker
This essay examines how age, power and agency is represented and reproduced in contemporary Swedish picture books.This is done through a combination of discourse analysis and literary analysis.It uses theoretical perspectives from sociology, and views childhood as a social construct. It sees discourse and language use as both representing and constructing social reality in the tradition of Norman Fairclough and critical discourse analysis. The main results is that the discourses of childhood in the material construct children as a separate group in society, and childhood as a special time in life. Children is portrayed as both social actors and in need of protection from adult themes and worries..
Den demokratiska tillbakag?ngen i Ungern : En kvalitativ fallstudie av Ungerns demokratiska tillbakag?ng under perioden 2010-2025
This study analyzes Hungary's democratic backsliding under Viktor Orb?ns term of office between 2010 and 2025. The research questions addressed in this study are ?Which central institutional reforms can be identified as significant for Hungary?s democratic backsliding under Viktor Orb?n?s rule from 2010 to 2025?? and ?In what ways have these reforms contributed to a process of democratic backsliding?? The study is based on a qualitative case method. To be able to conduct this study, secondary sources such as academic literature and reports from international organizations have been analyzed in detail.
Energibesparing i flerbostadshus
This paper is about the extent to which simplified penetration calculations ofsmall-caliber projectiles is a useful tool for assessing the physical protectioncapability. The work should be seen as an attempt to create an accessible tool inthe form of a simplified equation that allows for a better and safer use of thenaval vessels. The tool will also be used at different levels so that decisions andinstructions could be clearer.Performed calculations show a very limited capacity of a ship's basic design interms of physical protection against the use of small-caliber projectiles.How do we know that the calculations correct? By verifying the calculations withpractical shooting tests, a substantial condition to answer the question will becreated. To shoot against a material with two different thicknesses estimated toproduce perforation and non-perforation is a good approximation of the equationusability in the context..
Invallningsmodeller för petroleumcisterner
This paper is about the extent to which simplified penetration calculations ofsmall-caliber projectiles is a useful tool for assessing the physical protectioncapability. The work should be seen as an attempt to create an accessible tool inthe form of a simplified equation that allows for a better and safer use of thenaval vessels. The tool will also be used at different levels so that decisions andinstructions could be clearer.Performed calculations show a very limited capacity of a ship's basic design interms of physical protection against the use of small-caliber projectiles.How do we know that the calculations correct? By verifying the calculations withpractical shooting tests, a substantial condition to answer the question will becreated. To shoot against a material with two different thicknesses estimated toproduce perforation and non-perforation is a good approximation of the equationusability in the context..
Raä 977 - En lokal och tre aktivitetsytor. : En tvärvetenskaplig undersökning av Raä 977 vid Vojmsjön i Vilhelmina socken
This candidate thesis concerns the ?all but forgotten? material from the bronze age site named ?Raä 977, Hansbo 1:3, Vojmsjön, Vilhelmina?. During 1975-76, an archaeological dig was carried out by Västerbottens museum led by Ulla Walukiewich in an attempt to preserve the information the site held, before it was destroyed by the erosion brought on by the recently regulated sea ?Vojm? (Vojmsjön). The archaeological dig yielded a stunning amount of finds, samples and information previously unknown.
Shortstop Electronic Protection System : slutet för dagens och framtidens radarzonrör?
Krigshistorien har visat otaliga exempel på kampen mellan medel och motmedel och detta arbete beskriver ett av desenaste inslagen i denna envig. Motmedlet kallas Shortstop Electronic Protection System (SEPS) och är framtaget föratt möta radarbaserade elektroniska zonrör. Syftet med uppsatsen har varit att få en ökad förståelse för systemet och attutröna om det klarar kraven som ställs av en svensk amfibisk insatsstyrka (ATU) i en framtida internationellfredsoperation. Inledningsvis konstateras att behovet av ett skydd mot radarzonrör existerar i vald hot-, ochförbandsmiljö samt att kraven på motmedlet innefattar mycket hög prestanda på bl.a. reaktionstider och autonomitet.Radarzonrören har en mängd olika förmågor där de modernare mer avancerade zonrören innefattar olika typer avstörskydd.
Deltidsarbetandes företrädesrätt till högre sysselsättningsgrad
During the 20th century Sweden faced an increased proportion of workers registered as part-time unemployed, especially in the care sector. However, due to many valuable efforts, aimed at solving the problem of part time unemployment and political decisions, the number of people who are part-time unemployed has declined since the late 20th century. We have investigated part-time workers preferential right to extending their working hours. According to Section 25 a of the Employment Protection Act, part-time employees who have submitted an interest in increasing their working hours has a preferential right to increased working hours, with the assumptions that full-time employment with the employer will meet a labor need that the employee has sufficient qualifications for.Qualitative interviews have given us information about how Karlstad Community and a private care company deal with part-time unemployment and their workers preferential right to extending their working hours. We have found that people who work for Karlstad Community have an opportunity to choose their number of workings hours, thanks to a political decision made in Karlstad Community, aimed at solving the part time unemployment in the care sector.
Tidsbegränsade anställningar : En internt komparativ undersökning av gällande rätt och dess faktiska tillämpning
The Employment Protection Act (1982:80; LAS) is one of the cornerstones of the labour law that regulates the relationship between employer and employee. The central rule as stated in 4 § LAS is valid for an indefinite term. LAS is a semi-optional law in accordance with 2 § LAS which facilitates deviation from the central rule.Temporary employment is dealt with in 5 and 6 §§ LAS, regulations and collective bargaining agreements. The purpose of the legislative change on July 12007 was to simplify the use of temporary employment and to make the law more predictable and easier to interpret. The previous law was unnecessarily difficult for the employer to know when to put into practice.
Afrikas klimat : med fokus på Västafrika
Då de flesta människor i Västafrika, framför allt de som bor innanför kustzonen, livnär sig på jordbruk så är pålitliga väderprognoser och säsongsförutsägelser ett viktigt hjälpmedel i det dagliga arbetet och planeringen. I den här rapporten har en litteraturstudie gjorts för att öka kunskapen om de komplexa, både lokala och storskaliga, väderfenomen som ger upphov till nederbörd i området. Klimatet i Västafrika, ett område som mestadels täcks av regnskog eller savann, präglas av den västafrikanska monsunen som ger regnperiod under norra halvklotets sommar och torrperiod på vintern. Denna monsun visar på stor årlig variation när det gäller dess inledande faser, och prognoser som kan förutsäga dess början är nödvändigt när en jordbrukare ska planera säsongens verksamhet. Av många bidragande faktorer framgår det tydligt att ytvattentemperaturen i Guineabukten är en av de viktigaste parametrarna för monsunens startskede. Den intertropiska konvergenszonen, ITCZ, betraktas som monsunens nordligaste del och denna konvergenszon gör en plötsligt och relativt snabb förflyttning norrut, i fortsättningen benämnd som språnget, över ca 5 breddgrader, vilket av många ses som starten på regnperioden.