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1014 Uppsatser om Simple random sampling - Sida 31 av 68
Betavärdet som riskestimat
As stocks have become a more common way for people to save their money, the range of financial information has had a substantial increase. To understand the assumptions that stock valuation and analysis are built upon, it is important for the reader to have an understanding for the models that are used by banks and institutions when recommendations are published.The cash flow model, which is the most commonly used stock valuation tool, is based on CAPM. This model describes the relationship between an assets return and its risk in relation to an index. The risk parameter is called the beta value and has grown to be the dominating risk factor within financial economics literature.The use of beta values has been widely discussed in the world of academics and some researchers claim that the degree of explanation brought about by the beta is so low that it should be discarded, others are faithful to the beta and believe that it still serves a purpose. As a result of this criticism other ways to calculate the beta have surfaced, models that take other factors of risk into consideration.
Analys och förbättringsförslag för riktkopplardesign
Ericsson develops a new stripline directional coupler. Its design is described in appendix B and differs from the directional couplers Ericsson uses in current products. The new directional coupler will be used for transmission power measurement in future UMTS 3G base stations.The most important parts of directional coupler theory are presented. It is necessary to study this theory to understand how the coupler works and how it should be designed to get good performance.Optimal directional coupler termination component values to get high directivity and broad directivity bandwidth have been investigated.The trim screws trim ranges have been studied.A simple analysis of serial production performance when termination component tolerances are taken into consideration has been done.The resistance components reactive (inductive/capacitive) characteristics at 2.14 GHz have been analyzed.The directivity performance limitations of the directional coupler, when Ericsson?s band pass filter is connected, are investigated.Design changes leading to better performance are proposed.
KUNDRELATIONER : - En fallstudie på Nyby Torshälla Ridklubb
Abstract ? ?Customer relationships ? A case study on Nyby Torshälla Riding Club?Date: December 20th 2011Level: Bachelor thesis, 15 ECTSInstitution: School of Sustainable development of society and technology, Mälardalen UniversityAuthors: Linn Ericsson, Elenor Flodin, Emma Jakobsson22nd June 1987 24th April 1987 24th May 1989Title: Customer relationships ? A case study about Nyby Torshälla Riding ClubTutor: Daniel TolstoyKeywords: Relationship marketing, customer relationships, customer loyalty.Purpose: The purpose of this thesis is to analyze how Nyby Torshälla Riding Club maintains their customer relationships. This is to get a deeper insight into how small service companies, in a business to consumer market on a local basis, strategically can work with their customer care.Method: The study was qualitative in its nature and was based on an inductive approach. The primary data has been collected through personal interviews and since the respondents were selected strategically, this means that a non-probability sampling was used. The secondary data that has been used for this thesis was based largely on literature, articles and the Nyby Torshälla Riding Club website.Conclusion: This study indicates how small size service companies can benefit from nurturing their customer relationships.
Riskpremie i UIP - möjlighet till cross-currency arbitrage? - en jämförande studie av ränta och växelkurs mellan Storbritannien, Tyskland och Sverige.
The thesis explores the Uncovered Interest rate Parity (UIP) and the possibility of cross-currency arbitrage between England, Germany and Sweden. The data is gathered between May 1999 and December 2005 on a monthly basis and is compared using simple regression analysis. The aim is to find out whether UIP holds and, if it does not, a risk premium exists that makes it possible to make arbitrage gains on moving capital between England, Germany and Sweden. It is discovered that UIP does not hold and that cross-currency arbitrage possibilities exist. In the end a an attempt is made to practically show how the arbitrage possibility could be used for a real investor to make risk free gains from the Foreign Exchange market..
Utveckling av minimax-baserad agent för strategispelet Stratego
Stratego is a boardgame not very different from chess, that contains hidden information. Because of this, existing programs play at beginner level. The purpose of this thesis is to adjust a minimax algorithm so that it passes the demands of Stratego, and then build a Stratego agent around it. Tests with existing minimax algorithms leads to the development p-e-minimax. This algorithm uses two different values in its nodes to simulate the different information available to the agent and its opponent.
Smart design för auktionsapplikationer på smartklockor : Att uppnå användbarhet på smartklockeapplikationer
This study concerns design thinking and how to achieve usability when designing applicationsfor smart watches. The study's focus is on interaction and design for online auctionapplications such as Ebay and Tradera. After studying usability and design for devices withsmall screens, guidelines and design principles for interactive systems, we developed apaperprototype for an auction application. The prototype was used for testing our intervieweeswhile observing and asking questions. After collecting the data we analyzed the responses andfeedback on our prototype and combined the results to previous studies.
Dynamisk modellering av VSC-HVDC : En statisk och dynamisk modelldesign o?ver VSC-HVDC fo?r implementering i ARISTO
This thesis treats the subject of a complete steady state and dynamic model of the VSC-HVDC covering both the AC and DC system-side of the converter. The topology of the model is recreated after the scheduled transmission line in the south of Sweden, called SydVa?stla?nken. The topology covers both a simple two terminal connection as well as a multi-terminal one. This model is to be implemented in the power system simulation program ARISTO.
V-modulen, en del av en hållbarhetsstrategi.
The state of our society is frequently changing. Due to various factors, the pressure of creating a changeable city is high and necessary to adequately supply the needs for its inhabitants. But making these changes and adapt to the fast shifting state of the city is not always physical possible. Young adults and students is a group that often seeks to move to intensely growing city regions. The reason for this is a more promising job market and more attractive educations, but coincidentally the shortage of housing is extremely high in these areas.
Bangenerering för industrirobot med 6 frihetsgrader
This thesis studies path generation for industrial robots of six degrees of freedom. A path is defined by connection of simple geometrical objects like arcs and straight lines. About each point at which the objects connect, a region, henceforth called a zone, is defined in which deviation from the defined path is permitted. The zone allows the robot to follow the path at a constant speed, but the acceleration needed may vary. Some means of calculating the zone path as to make the acceleration continuous will be presented.
Diurnal rhythm of the savannah elephant (Loxodonta africana africana) in Maasai Mara National Reserve, Kenya
Elephants are hindgut fermenters, which affects their diurnal rhythm. To reach their nutrient demands, elephants must eat almost constantly throughout the light part of the day. Sexual dimorphism may also affect their behavioral patterns. To understand the elephants' normal living habits and foraging behaviour, we conducted a pre-study in the Mara Triangle, the north-western part of the Maasai Mara National Reserve. Each of four to six observers randomly chose a focal animal within the group of elephants by the criteria that they were adults and visible.
Erfarenheter av några utfodringssystem till får :
The evaluation of the function of the feeding of sheep herds is suggested to involve the work
effort, the fulfilment of the nutrient needs of the sheep and the feed waste. Mechanisation of
the feeding can be very simple or include high degrees of mechanisation.
Three different farms, representing different levels of mechanisation are presented.
Descriptions and analysis of the feeding systems including mechanisation, work effort and
estimations of the feed waste are made on each farm. The herd with the most advanced feed
mechanisation included a rolling feed band and mix wagon. The other farms were partly or
little mechanised including ad lib feeding from big bales and manual distribution of hay and
concentrates.
The most mechanised farm was able to feed a large herd of sheep at a low work effort and
little feed waste. However, the investment in machinery has to be weighed against the
improved efficiency.
Visbys färger : exteriör färgsättning av bostadshus i Visby innerstad 1860?1930
The main aim of this research is to survey the general colour scheme for private dwellings inVisby, built 1860?1930. During this period the visual appearance of the town of Visby changedsubstantially, since the increased local production of lime led to the plastering of many woodenbuildings. Which colour schemes were chosen for the different building types of the historic centreof Visby, and which colours came to dominate the time period? The methods used for answeringthese questions have partly been field studies on site and sampling of selected buildings, andpartly critical reading and observation of iconographic material (paintings, drawings, aquarelles,postcards and photographs).
Kvinnor, kriminalitet och könsmaktsordning : En kvalitativ studie om återanpassningsarbete på Färingsöanstalten ur ett genusperspektiv
This thesis explore women?s needs when reentering society after having served a sentence at the female prison Färingsö, outside Stockholm and whether those needs are being met in the reentry strategies that are being provided. Parallel to this the thesis also examines if there, based on nonconformity and gender theories, is a socially constructed representation of women maintained in the rehabilitation work.The method of this thesis applied semi-structured interviews and used snowball sampling to expand the network of informants to obtain the data necessary. Totally five interviews were carried out. Previous research has shown that women in prison have much more complex problems than men and that there is a need for reentry strategies that take gender in account.The results showed that in terms of being able to reenter back in society, women needed help to structure a previously chaotic life.
Dairy fat biomarkers and cardiometabolic health
Commonly held dietary guidelines discourage full-fat dairy consumption due its to high levels of saturated fatty acids, which are believed to aversely influence cardiovascular disease risk. Cardiovascular diseases cause more than one third of deaths in the developed world. With dairy often providing a large part of energy and nutrients in Western diets, research into its effects on human health is warranted.
Several recent studies have suggested a protective role of dairy in the development of cardiometabolic disease. However, many of these have used imprecise methods of dietary assessment, based on questionnaires or interviews. Biomarkers are emerging as a means of evaluating diet in a more objective way.
Currently used dairy fat biomarkers are minor fatty acid constituents of dairy that preferably are unique to dairy and not influenced by endogenous metabolism.
Automatisk genreklassifikation : en experimentell studie
This thesis aims at examining to what extent a few, algorithmically very easily extractable document features can be used to classify electronic documents according to genre. A set of experiments is therefore carried out, using only 11 such simple features in an attempt to classify 84 documents belonging to electronic academic journals into three manually identified genres: table of contents, article, and review. The 11 features are also divided into three sets, containing metrics of words and sentences; punctuation marks; and URL links, respectively. The performance when using these sets of features is then measured with regard to classification accuracy, using a k-NN classifier, four different values of k (1, 3, 5, 7), and both leave-one-out and 10-fold cross-validation. Best results are achieved when using all three feature sets (i.e.