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5656 Uppsatser om Zero inflated negative binomial model - Sida 1 av 378

Vad påverkar tiden som en mamma ammar? : -en empirisk studie

Syftet med uppsatsen är att försöka förklara vad det är som påverkar tiden som en mamma ammar. För att undersöka vad det är som påverkar tiden som en mamma ammar, har en Zero inflated negative binomial-modell (ZINB-modell) tagits fram. Resultaten visar att det som avgör hur länge en mamma kommer att amma är: Graviditetens längd, mammans ålder, mammans rökvanor under graviditetens sista månader, mammans rökvanor samt mammans nationella ursprung..

Flygbesiktning av Luftledningar : Modellering av samband mellan besiktningsanmärkningar och systemtillförlitlighet

This paper thoroughly investigates needs and requirements for overhead distribution feeder inspection and develops models to investigate possible relations between short term inspections remarks and outages. The study was conducted in collaboration with Fortum Distribution AB that supplied extensive information about their overhead power feeders concerning both inspection and power outages. The investigated models where lognormal linear model, Poisson generalized linear model and negative binomial generalized linear model. All models were implemented utilizing offset terms to compensate for differences in feeder length and amount of overhead versus underground feeders. The Poisson generalized linear model was rejected at an early stage due to overdispersion and neither of the remaining models fit the data perfectly.

Kosovo - Självständighetens betydelse och möjligheter : En fallstudie i demokratiutveckling

The aim of this study is to examine the democratization process of Kosovo in the years after the countries independence was assured. Two central questions for the case study consist of whether a democratic improvement in the country has occurred and which factors, positive and negative, are present to further improve or impede the democratizationprocess. The study builds upon two central definitions, democratic states and democratization in order to gain theoretical background to be able to measure these two quite abstract expressions. A socioeconomic model is used to measure favorable or negative developments within Kosovos society and the findings of this model confirms the hypothesis of modernization theory, namely that increased socioeconomic development increases the chance of a positive democratizationprocess. There has been a positive democratic development aswell as socioecomic progress but since the nature of this study is merely descriptive and not explanatory, it doesnt make claims on the explanatory power of modernization theory.

Redesign av gallervält för Svea Redskap AB : Examensarbete, produktutveckling

The environmental debate is more intensive than ever before and the demands on companies increase. There are a number of methods to make it easier for the companies to fulfil the demands. Life Cycle Assessment (LCA) end ecodesign are some of the methods that can be used. Syntronic AB has the possibility to reduce the products´ environmental impact in the design phase. Therefore it is important for the company to make it possible to visualize the negative environmental impacts a product can cause in an easy way. It is also important to visualize for there clients if any improvement is possible. The purpose of this thesis is to develop a simplified model.

?Varumärkesstyrkas modererande effekt på negativ publicitet?

Publicity is argued to have relatively great impact on attitudes and behaviours of consumer. Especially great is the influence of negative information. At the same time it is likely for brands to be subject to negative publicity. Since companies are investing gigantic sums into buidling strong and positive associations around their brands it is of great economic interest to have a better understanding how negative publicity influence brand equity and what factors might moderate this effect. This thesis focuses on brand strength as a moderating factor of negative publicity.

?Varumärkesstyrkas modererande effekt på negativ publicitet?:

Publicity is argued to have relatively great impact on attitudes and behaviours of consumer. Especially great is the influence of negative information. At the same time it is likely for brands to be subject to negative publicity. Since companies are investing gigantic sums into buidling strong and positive associations around their brands it is of great economic interest to have a better understanding how negative publicity influence brand equity and what factors might moderate this effect. This thesis focuses on brand strength as a moderating factor of negative publicity.

Risk Management vid implementering av regulatoriska ändringar inom Sweden Operations

The environmental debate is more intensive than ever before and the demands on companies increase. There are a number of methods to make it easier for the companies to fulfil the demands. Life Cycle Assessment (LCA) end ecodesign are some of the methods that can be used. Syntronic AB has the possibility to reduce the products´ environmental impact in the design phase. Therefore it is important for the company to make it possible to visualize the negative environmental impacts a product can cause in an easy way. It is also important to visualize for there clients if any improvement is possible. The purpose of this thesis is to develop a simplified model.

"Det känns ganska fräscht att ha en Volvo för att nu har ju dom den i Solsidan" : En kvalitativ attitydundersökning om svenska tv-tittares attityd till produktplacering

Since product placement is a relatively new phenomenon in Swedish television, there is a lack of research on what attitudes Swedish TV-viewers hold towards it. This is where our paper will contribute to the research. The purpose of this reserachpaper is to describe and analyze what attitude Swedish TV-viewers has towards product placement. Kim Schröders multidimensional model of mass media reception were used, which is a developed model from Stuart Hall?s ?encoding/decoding? one-dimensional model.

Modellering och reglering av drivenheter i gaffeltruck

To enable the enhancement of the driver's environment in a forklift, an alternative form of steering has been evaluated. An earlier concept with a combined driving and steering wheel has been exchanged to a concept with two driving wheels. A link wheel has replaced the combined driving and steering wheel. The steering is done through differentiation of the velocities of the two driving wheels. The scope of this master thesis is to create a simulation model, create a control program and to evaluate the concept of two driving wheels.

"Prata högre! Jag hör inte vad du säger" : En kvalitativ studie om elevers och pedagogers upplevelser av Södertäljes nya skolmodell

"Speak up! I can?t hear you"This qualitative study is built on an investigation of a newly instated model that is used when building or renovating schools. The principles of the model are based on building schools with an open plan design where the walls are made of glass and the classrooms are not shut closed by walls, instead the classrooms are completely open except from screens that are used to indicate the ambit of the rooms. This model has been well debated and that is the reason why we chose to do this study.The purpose of this study is to find out how students and teachers experience this model. To do this we have done interviews and observations.

Ekoanalys-modell : En förenklad modell för att kunna belysa miljöpåverkan redan i designstadiet av en produkt

The environmental debate is more intensive than ever before and the demands on companies increase. There are a number of methods to make it easier for the companies to fulfil the demands. Life Cycle Assessment (LCA) end ecodesign are some of the methods that can be used. Syntronic AB has the possibility to reduce the products´ environmental impact in the design phase. Therefore it is important for the company to make it possible to visualize the negative environmental impacts a product can cause in an easy way. It is also important to visualize for there clients if any improvement is possible. The purpose of this thesis is to develop a simplified model.

Leder kritisk publicitet till kritisk publicitet?

Academic research indicates that critical publicity can have a detrimental effect on brand attitudes. The negative effects have been showed to be buffered by cognitive bias elicited by strong favourable attitudes, commitment, brand certainty and brand identification. It has been proposed that the influence of such bias in a news reporting context should be studied, something that also is interesting from a brand perspective. The study therefore investigated whether a well-publicised scandal in one period can lead to increased critical publicity in the coming periods. A case study of Swedish grocery chain ICA was conducted.

Antal anställda på arbetsplatsen och attityder till invandrare : Sambandet mellan attityder till invandrare, arbetsplatsstorlek och individuella faktorer

Previous research shows that small workplaces more often discriminate immigrants during the process of hiring new employees than larger workplaces, and usually explains this result by referring to structural factors. At the same time, previous research also shows that self-employees tend to have different personality traits than other people. Could it be the case that the higher discrimination among small workplaces can be explained at an individual level? I examined the hypothesis through OLS-regressions using a survey called Employment, Material Resources, and Political Preferences. The results showed that people working at small workplaces tend to have more negative attitudes towards immigrants than people working at larger workplaces.

Finansiella nyckeltalens samspel som investeringsstrategi : En kombinationsmodell för att uppnå riskjusterad överavkastning

This study is based on a statistical analysis of fundamental key ratios on the Stockholm Stock Exchange during the period 2004-2012. In total 35 financial ratios of 90 companies were tested, ultimately five ratios remained within the 5% significance level. These ratios were ROA, P/B, Total Yield, EV/EBIT and Operating Margin. A custom made investment model was created based on the purpose to achieve a risk-adjusted excess return. The results in general did not show any significant difference in return between the model's portfolio and index.

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.

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