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870 Uppsatser om Variable reduction - Sida 21 av 58
Ljudreducering av värmepump
This degree project handles acoustic measurements of the heat pump EcoAir 107, made by Enertech CTC AB. The sound from the three sound sources of the heat pump, fan, compressor and four way valve, have been measured to find out how they affect the total sound level of the product.Measures to attenuate the sound level have been developed and tested. By comparing these with the sound of the heat pump, in its original state, we have found out the measures which have best effects.The best attenuating measures came to be: taped openings and holes around the compressor space, isolating the top and the bottom of the whole construction, support of the fan bottom part and shielding of the sound source with a screen at a distance of 110 mmThese measures have been tested together and an average attenuation of the total sound level with 3,9 dB have been accomplished. In the front of the fan where the continuous sound is the strongest, the attenuation was 4,7 dB.This project is meant to be used as a guide by Enertech CTC AB:s during their future developing process..
Hur viktig är statens styrka för ekonomiskt välstånd?- En studie av alla världens länder
What role does the state play in economic development? This thesis seeks to investigate the relationship between a strong state and economic development. To define the concept of a strong state I focus on the relationship between the scope of state functions and the efficiency of which these functions are implemented. The concept of a strong state is in this thesis defined as the efficiency of the state functions. By using a database constructed by three economists; David Kaufman, Aart Kraay and Massimo Mastruzzi as a measurement of a strong state I test the relationship with economic development empirically.
Faktorer i familjen som kan påverka det överviktiga barnets möjlighet till viktnedgång
Bakgrund: Övervikt och fetma är en global epidemi. Fetma kan orsakas av arv, miljö och beteendemässiga faktorer. Övervikt kanleda till flera följdsjukdomar. Viktminskning kan ge ökad livskvalité pch psykiskt välbefinnande. Ur ett hälsoekonomiskt perspektiv är det av vikt att det hälsofrämjande arbetet startar tidigt i barndomen.
Optisk sortering av matavfall : en jämförelse med en minskning av svinnet
The purpose of this study is to compare the energy related and environmental consequences of implementing optical sorting as a means of waste collection with those of reducing food waste. In addition to studying the possibility of implementing optical sorting in downtown Stockholm, the yielded amounts of energy from waste collection and reduced wastage will be calculated. This is done by way of literature reviews and interviews. The amount of energy that can be generated through optical sorting and biogas production via anaerobic digestion in downtown Stockholm is 29-44 TJ/year, compared to 118 TJ/year saved by completely eliminating food waste. The generated biogas can replace fossil fuels, but the required food waste contributes to increased greenhouse gas emissions as well as reduced bio diversity and eutrophication during the wasted food?s lifecycle.
Prisskillnader mellan privata och publika bolag : En studie om illikviditetsrabatten och dess varierande storlek
The main objective of this study is to divide a number of colorectal cancer cases into subgroups based on their molecular features using cluster analysis. The data used is supplied by a research group at Pathology, the Department of Medical Biosciences, Umeå University, and consists, after some preparation, of 455 observations which is a larger data set than many similar studies. The molecular variables that the clustering is based on are CIMP (CpG Island Methylator Phenotype), MSI (Micro Satellite Instability), BRAF- and KRAS-mutations. These are categorical variables and consequently the clustering method used is PAM (Partitioning Around Medoids) which is particularly useful with data on diverse variable level. The final analysis results in four subgroups that are represented by different combinations of attributes on the aforementioned variables.
Över tröskeln : Ett nytt boendefenomen
Ett lågtröskelboende vänder sig till individer med missbruks- och boendeproblematik där intentionen är att erbjuda individen stöd i dennes alkoholproblematik samt en trygghet i boendet utan att ställa krav på nykterhet. Studiens syfte var att undersöka fenomenet: upplevelsen av att bo på ett lågtröskelboende utifrån ett brukarperspektiv, samt vad flytten till lågtröskelboendet har inneburit för de boendes livskvalitet. I analysen användes ett fenomenologiskt perspektiv med livsvärldsteorin som utgångspunkt. Resultatet visar studiens fenomen som existentiell samhörighet i alkoholmissbruk. Den delade alkohol- och boendeproblematiken gör att de boende upplever sig som jämlika med varandra, vilket också skapar en känsla av gemenskap och tillhörighet.
Hur lokal bioenergi kan bidra till att Uppsala kommun når klimatmålet 2050
The purpose of this thesis was to examine how locally produced bioenergy may contribute to meet the climate target year 2050 in the municipality of Uppsala. The
goal of reduced GHG-emissions from current 6,8 ton CO2-equivalents to 0,5 ton CO2-equivalents per capita and year, year 2050 is based on avoiding harmful penalties
of an increased level of GHG in the atmosphere. By estimating available biomass in the county together with examining future technologies and emission factors for the substrates used, four possible future scenarios has been developed focusing either on electricity generation or production of biofuels. GHG-emissions of year 2050 have been calculated using the software LEAP.
The conclusion is that bioenergy, depending on how it is integrated in the energy system, may reduce greenhouse gas emissions between 0.6 ton CO2-equivalents and 1.4 ton CO2-equivalents per capita or 12% to 25% compared to 5.5 ton CO2-equivalents in the reference scenario 2050. The greatest reduction is obtained if biofuels are produced in combination with energy efficient heat requirements in
buildings..
?Jag tyar inte idag!? En kvalitativ studie om motivationsfaktorer till fysisk aktivitet i samarbete med Centralsjukhuset i Kristianstad.
Physical activity is required for a good health and science shows a clear connection between exercise and a lower risk for disease. Still, the physical activity among the population is far from good. It is the individuals own responsibility to exercise, but the society also has a responsibility to give opportunities to exercise for the population. The aim with the study was to investigate what motivated the group of physical active people to use the Central hospital in Kristianstad?s health program.
Lågkonjunktur, En studie i vilka skillnader som finns för variationen i antal anställda inom IT- respektive industribranschen
Sammanfattning
Titel: Lågkonjunktur ? En studie i vilka skillnader som finns för variationen i
antal anställda inom IT- respektive industribranschen
Författare: Emilio Nilsson, Oscar Kacprzak
Handledare: Emil Numminen
Institution: Blekinge Tekniska Högskola
Kurs: Kandidatarbete i Företagsekonomi
Syfte: Syftet med uppsatsen är att undersöka och analysera för hur företagets
ekonomiska data för den relativt unga IT-sektorn förklarar antal anställda
gentemot hur företagets ekonomiska data förklarar nyckeltalet för en äldre mer
erfaren bransch som industrisektorn.
Metod: Vi har samlat ihop kvartalsrapporter från 1999 års första kvartal till
2009 års första kvartal för totalt 10 stycken företag som vi bedömt lämpliga
för studien, 5 företag från IT-branschen samt 5 företag från industribranschen.
Vi har därefter fört regressionsanalyser med antal anställda som Y-variabel och
totala intäkter, aktienivå, rörelsekostnader samt rörelseresultat som
X-variabler för att finna korrelationen däremellan.
Slutsats: De framkomna resultaten från regressionsanalyserna pekar på att det
finns skillnader branscherna emellan.
Om ekonomiskt bistånd och kriminalitet - En studie om socialt stöd och dess effekter på misshandel och stöld
Since criminality started to rise steeply in most western welfare states following the second world war the relationship between welfare support and criminality has been debated. For a period of time thought to be an effective preventive measure against crime welfare support has since from time to time come to be seen by some as ineffective and in some cases even as a contributing factor to the rise in crime. It remains a contested issue as new theories, such as social support theory, which is employed here, attempt to contribute to the understanding of what effects general welfare has on overall crime levels. As a connection which is relatively well-researched in the USA, altough still not yet fully understood, this study strives toward a better understanding by testing the relationship in a swedish context. The relationship might not function in the same way considering that the US is a fundamentally different welfare-regime than Sweden, liberal and social-democratic respectively.Untangling the relationship is attempted by employing a multivariate regressionanalysis on a crosssectional dataset consisting of data from 2012 covering 247 of Swedens total of 290 municipalities.
Give me Moore - I hate being Solo : en jämförande analys ur informationsdesignperspektiv
I den här uppsatsen har jag analyserat tre tidningsartiklar från herrtidningen Moore, och tre tidningsartiklar från tjejtidningen Solo. Jag har analyserat en artikel i varje nummer, så totalt har jag använt sex tidningar. Utöver artiklarna har jag också analyserat två av tidningarnas omslag. Efter analyserna har jag gjort jämförelser mellan de båda tidningarnas artiklar och omslag för att se om det går att påvisa några skillnader, men även likheter. Min avsikt med att göra det här var att bevisa vetenskapligt att skillnader finns i tidningarnas informationsdesign, alltså deras bilder, texter och layout. Jag har analyserat artiklarna efter en ganska strikt modell, men även tagit mig friheten att välja bort eller lägga till vissa element i modellen beroende på vilken sorts artikel jag analyserat.
Jämlik strokevård : En analys av skillnader mellan patientgrupper avseende vård på strokeenhet, åren 1995-2009
The main objective of this study is to divide a number of colorectal cancer cases into subgroups based on their molecular features using cluster analysis. The data used is supplied by a research group at Pathology, the Department of Medical Biosciences, Umeå University, and consists, after some preparation, of 455 observations which is a larger data set than many similar studies. The molecular variables that the clustering is based on are CIMP (CpG Island Methylator Phenotype), MSI (Micro Satellite Instability), BRAF- and KRAS-mutations. These are categorical variables and consequently the clustering method used is PAM (Partitioning Around Medoids) which is particularly useful with data on diverse variable level. The final analysis results in four subgroups that are represented by different combinations of attributes on the aforementioned variables.
Biologisk bekämpning av Fusarium graminearum
Fusarium graminearum causes reduction in both yield and quality in cereal grain worldwide. One of the diseases it can cause is Fusarium Head Blight (FHB). Both sexually and asexually produced spores can infect living plants. Asexual conidia are produced in the mycelium while sexual ascospores form in asci in perithecia on debris. In biological control, living organsims are used to control pests and diseases.
Institutionella investerare - aktiva ägare eller passiva förvaltare? : En studie av hur institutionellt ägande påverkar ersättningar till ledande befattningshavare i Sverige
The purpose of this thesis is to examine whether institutional ownership has an influence on CEO compensation in companies where the institutions have invested. In order to fulfil the purpose of the thesis a quantitative study was carried out within the Swedish corporate context where we have studied Swedish institutional investors and companies quoted on the Stockholm Stock Exchange. Our period of study was the financial year of 2007.The empirical questions at issue is; Was there a connection between Swedish institutional ownership and the size of the CEO compensation, and, does Swedish institutional ownership lead to a certain type of CEO compensation in terms of structure?Our results did not suggest that an increased institutional ownership neither leads to a certain type of salary level nor a certain kind of salary structure. These results contradict earlier American research, which has been done within this area and has previously shown a secured connection.The reasons for our results may be many and it is difficult to state any concrete conclusions to why we received differing results.
Upprättande av mall för fuktsäkerhetsbeskrivning : Genom granskning av projekt ur fuktsäkerhetssynpunkt
During the 1990?s a large number of building projects were revealed where lack of moistsafety precautions during the construction process had led to extensive moisture damage. Alsoresent implemented studies have shown that the problems with moisture damages have ratherincreased than decreased during the past few years. Moist is considered to be one of the mainfactors to cause unhealth due to deficiencies in the indoor-environment and does also causeunnecessary expenses and a reduction of the confidence in the construction industry.In this Bachelor of Science thesis three projects have been reviewed to examine how moistsafetyhas been observed during the construction process. Main focus has been to identify thebuilding components that are the most exposed to moist, and to examine how they have beentaken into account during the period of design and construction.