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1429 Uppsatser om Non-linear models - Sida 3 av 96
Klimatpåverkan vid vägbyggnad -beroende av vald konstruktion
It?s a fact that the climate is affected by the vehicle that runs on the worlds roads. But theconstruction of the road itself is rarely thought of as a climate threat. Svevia and the Swedish roadadministration have opposite views of how the construction of roads should be carried thru. It?sthe difference between those two construction methods that is the base in our thesis.The amount of energy use or the emissions are not analyzed for neither the Swedish roadadministrations nor Svevias construction models.
Den rationella individen ? En lagbrytare? : En studie av överutnyttjandet av tillfällig föräldrapenning vid införandet av en karensdag i det svenska sjuklönesystemet
The goal of this paper is to examine whether the introduction of a qualifying day in the use of sick insurance in the Swedish welfare system resulted in an increase in the use of parental benefits as substitute to avoid the qualifying day. We believe that this could be the case because of the higher gain from the welfare system. We use OLS to perform a linear regression from a data set from the data base LINDA during 1991-1996. The results in this paper are that there is a significant increase in the parental benefit after the reform although there is a negative trend for parental benefit during the examined period..
Informationskompetens - färdighet eller insikt? En jämförelse mellan två modeller över begreppet informationskompetens
This Master's thesis in library and information science aims to shed light on the concept of information literacy in higher education, particularly as manifested in two dissertations on the subject. Two models of information literacy are compared: Christina Doyle's list of ten attributes for students to master and Christine Bruce's seven conceptions of information literacy. The cognitive-behaviourist tradition in Doyle's study and the alternative, phenomenographic approach in Bruce's research are compared and commented. The taxonomies and internal relationship between separate components in the two models are investigated, as well as the ways the models relate to each other. The respective views of knowledge and learning are described.
Hållfasthetssortering av plankor med hjälp av röntgendata
The aim of this thesis is to find a statistical model that sort logs according to a predicted modulus of elasticity on the sawn boards. The input parameters for the model are X-ray variables from an X-ray scanner. For some of the log classes sawn at the sawmill it is desirable to have a narrow distribution of modulus of elasticity on the sawn boards. 250 pine logs from five different diameter classes were numbered and followed through the sawmill process. Log data were collected from X-ray and 3-D scanners in the log intake.
Life Cycle Cost : Studie om LCC som verktyg att utva?rdera geoenergianla?ggningar
Life Cycle Cost, often abbreviated as LCC, is a common tool for comparing the total cost of different alternatives, such as heating and cooling methods. Common heating and cooling methods in Sweden are geothermal energy, district heating and district cooling. This report aims to evaluate how different heating and cooling methods differ from each other while being applied on three different types of buildings, using selected LCC-models. Information about the selected LCC-models wasretrieved from each separate model and its website. Reports and agencies were used as sources for information about the heating and cooling methods.
Utvärdering av Transportstyrelsens flygtrafiksmodeller
The Swedish Transport Agency has for a long time collected data on a monthly basis for different variables that are used to make predictions, short projections as well as longer projections. They have used SAS for producing statistical models in air transport. The model with the largest value of coefficient of determination is the method that has been used for a long time. The Swedish Transport Agency felt it was time for an evaluation of their models and methods of how projections is estimated, they would also explore the possibilities to use different, completely new models for forecasting air travel. This Bachelor thesis examines how the Holt-Winters method does compare with SARIMA, error terms such as RMSE, MAPE, R2, AIC and BIC will be compared between the methods. The results which have been produced showing that there may be a risk that the Holt-Winters models adepts a bit too well in a few variables in which Holt-Winters method has been adapted.
Skönhet kommer från Photoshop - En studie om effekter av retuscherade modeller i reklam
There are widespread discussions about the use of retouched models in media, ranging from bloggers to legal decision-makers. Research shows that there are negative psychological effects on especially females being exposed to idealized, retouched model images. The purpose of this paper is to explore the effects of using retouched models in advertising from a marketing perspective, based on attitudes, perceived quality and purchase intentions.Based on theories about attractiveness, halo-effects and social comparison, an experimental study was done, investigating the different responses on above mentioned parameters to advertisements showing either retouched model images or non-retouched model images. Initially it was also tested if the retouched models were seen as more attractive than the non-retouched models. The results showed almost no differences between the reactions to the advertisements with retouched models compared to the advertisements with non-retouched models, when all respondent groups were analyzed together.
Prediktioner och förklaringsmodeller för konkurser i aktiebolag - en studie av tre svenska aktiebolag i konkurs
Title: Predictions and explanation models for bankruptcy in stock-companies
? A study of three failed Swedish companies
Author: Tim Svanberg
Supervisor: Emil Numminen
Department: School of Management, Blekinge Institute of technology
Course: Bachelor?s thesis in business administration, 10 credits
Purpose: The purpose of the thesis is to find explanation for bankruptcy with
the help of prediction models. The purpose is also to add explanation by using
Behavioral analysis
Method: Quantitative research of bankruptcies using financial prediction models
and qualitative study of psychological pitfalls. The study is deductive.
Results: I found that it is possible to explain the bankruptcies using the
prediction models. The behavioural perspective adds further explanation.
Simulering av hydrauliska dämpare i borrslagverk
This master thesis consists of the creation of shock absorber models for percussive rock drills. A model of the rock was also developed. These models were connected to existing models of the rock drill to create a complete simulation of the rock drilling process.When the models had been created the rock model was evaluated by comparison with measured values from lab tests. The verified rock model was then used to evaluate the shock absorber models.Four new shock absorber concepts have been developed. Three of these have been modelled, while the fourth have only been sketched and described.The evaluation of the models showed the following:? Simulations of the single shock absorber don?t correlate to reality very well.
Evaluation and Comparison of Ecological Models Simulating Nitrogen Processes in Treatment Wetlands,Implemented in Modelica
Two ecological models of nitrogen processes in treatment wetlands have been evaluated and compared. These models have been implemented, simulated, and visualized in the Modelica language. The differences and similarities between the Modelica modeling environment used in this thesis and other environments or tools for ecological modeling have been evaluated. The modeling tools evaluated are PowerSim, Simile, Stella, the MathModelica Model Editor, and WEST. The evaluation and the analysis have been performed using McCall?s factors for software quality (McCall et al, 1977), a correlation analysis and the Constant Comparative Method (Glaser&Strauss, 1999).
Is less more?
Back in the 1950s Marilyn Monroe and her hourglass shaped body was the aesthetic ideal for how models were to look like. Nowadays, the tide has turned. Research has shown that female models are becoming increasingly taller, narrower and straighter. This trend has occurred despite the fact that both men and women (still) prefer medium sized women with curvy bodies. This essay examines if this trend can be justified from a marketer's perspective.
Det nya Kiruna : tävlingsförslag och utopisk förebild
Kiruna står nu inför en unik omvandling då staden ska omlokaliserar på grund av utvidgningen av gruvdriften. En arkitekttävling har nyligen genomförts om utformning
och användning av det nya Kiruna.
Syftet med denna uppsats var att studera relationen mellan stadsbyggnadsutopin The Linear City och det vinnande tävlingsbidraget Kiruna 4-ever.
För en ökad förståelse för dagens Kiruna är Hallmans stadsplan för Kiruna och dess koppling till svenska och engelska trädgårdsstäder viktig. I bakgrunden behandlas även arkitekttävlingens program och juryutlåtande.
Arbetet har utförts som en litteraturstudie med fokus på de intentioner gällande fysisk form och användning som förslagsställare och teoretiker presenterat.
Resultatet visar att beröringspunkterna mellan förslag och teori är många.
Skillnaderna blir tydliga i framförallt synen på hållbarhet där Kiruna 4-ever till skillnad mot The Linear City tar ett grepp om den ekologiska hållbarheten. En annan skillnad är inställningen till höghus där Kiruna 4-ever använder dem för att uppnå en högre densitet. I The Linear City identifieras höghus som ett problem för social hållbarhet.
I uppsatsen diskuteras också vad en utopisk förebild kan tillföra ett gestaltningsförslag.
En möjlig slutsats är att en teoretisk grund underlättar för förslagsställare att presentera ett lättöverskådligt förslag.
Aktievärdering : En studie om vilka aktievärderingsmodeller som främst tillämpas av finansanalytiker inom bankväsendet
Introduction: Analysts worldwide valuates stocks and companies by using different valuation models. The models are used to calculate how much public company?s stocks are worth and to identify whether stocks are over- or undervalued. Objective: The objective of this essay is to study which valuation models are mainly used by financial analysts in Swedish banks. The purpose is also to study how reliable these models are considered. Method: The empirical study is based on a qualitative approach through interviews with financial analysts. The study includes both primary data (interviews) and secondary data (literature, websites and scientific articles)Theory: The theory chapter includes methods of analysis (fundamental and technical analysis), Valuation models, components of valuation and an example of a valuation with the Discounted cash flow model. Empirical study: The study includes a qualitative research that consists of interviews with financial analysts.
En indirekt metod för adaptiv reglering av en helikopter
When a helicopter is flying, the dynamics vary depending on, for example, speed and position. Hence, a time-invariant linear model cannot describe its properties under all flight conditions. It is therefore desirable to update the linear helicopter model continuously during the flight. In this thesis, two different recursive estimation methods are presented, LMS (Least Mean Square) and adaptation with a Kalman filter. The main purpose of the system estimation is to get a model which can be used for feedback control.
Identifiering och redovisning av immateriella tillgångar vid rörelseförvärv ?En kvantitativ studie om redovisningstransparens och kapitalmarknadens informationsasymmetri
The association between disclosure level and asymmetric information is a matter of importance andconsiderable interest to the financial reporting community. The theory in this area suggests that acommitment by a firm to increased levels of disclosure should lower the information asymmetry thuslowering the cost of equity. This theory may be compelling, but so far the empirical results have beenambiguous. Due to increased globalization the demand for high quality accounting standards has risen. In2005 The International Accounting Standard Board launched the standard named IFRS 3.