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186 Uppsatser om Multivariate detection - Sida 5 av 13

How drinking behaviour in automatic milk feeders can be used as early disease detection

Healthy calves are the foundation in order to run a profitable diary production. Being healthy as calf results in a better start in life and good growth is expected to follow. Within dairy production it becomes more common to rear calves in groups and feed them by an automatic milk feeder. The milk feeder enables for the calves in greater extent to ingest milk or milk replacer several times per day and they are also able to perform natural behaviors in greater extent. Group rearing of calves puts higher demands on the animal keepers to localize individual calves in the group pen, showing signs of illness.

Immunohistochemical detection of thymidine kinase 1 in canine mammary tumors and lymphomas

The dog has often served as a model animal for humans in scientific studies. This is due to the fact that dogs are susceptible to a wide range of diseases which also affect humans. One example is cancer, a condition that affects dogs as well as owners. Neoplastic diseases account for 18-23 % of all deaths in dogs (Bonnet et al., 2005 and Jagielski et al., 2002). Mammary tumor, or tumor of the breast, is the most common tumor form in intact dogs and women (Im et al., 2013). Mammary tumors originate in the udder, and are classified according to their histological characteristics.

Hur ofta hälsar du på din granne? : En kvantitativ studie av integration som förklaringskraft beträffande befolkningssammansättning och radikala högerpopulistiska åsikter

A logical cause of migration is of course immigrants which is a topic always creating discussions. When arriving in a new country a process of integration with the goal to adapt to the environment is started. This study will explore the need for integration and seeks to examine the connection between population composition and radical right opinions.To fulfill the aim, a multivariate regression analysis is done on aggregated level in Sweden with statistics concerning the year of 2010. The relation between ethnic composition and voters support for the Swedish radical right party Sverigedemokraterna is studied as well as integration as an explanatory intermediate factor operationalized through unemployment, financial assistance and trust.The results of the study indicate a positive connection between immigrants from EU/EFTA and the voter support for Sverigedemokraterna. A negative relation is identified between trust and the voter support for Sverigedemokraterna.

Medierepresentationen av världens länder : Strukturer i fyra svenska nyhetstidningar

This essay casts light on the quantitative aspect of the media representation of foreign news. The purpose of the essay is not only to describe the media representation of the countries of the world, but also to explain the representation out of structures that are mirrored by the mass media. Four hypotheses are stated that are operationalized in the research. These are treating four different factors that are believed to affect the representation, economy, geographical distance, cultural distance and the size of the population. A fifth hypothesis is stating that economy is the most influential of the factors.

Filter och kapsling för IR-givare

This paper describes the work done trying to diminish the noise present in the signal from an IR-detector. The project was aiming towards two different kinds of applications; heat protection and presence detection. The hypothesis was that the signal-noise ratio would decrease if a filter and a proper installation were used for the detector. Some experiments were executed to determine what kind of filter were the most suitable for each application and how these could be installed. After executing the experiments and evaluate the results we recommend to use a specific filter for each application.

Kemin bakom framtidens avgasrening : En studie av ureasönderfall under kvävgasatmosfär

The purpose of this work was to provide a better understanding of urea?s decomposition and byproduct formation in an SCR system on heavy trucks. In my experimental setup with TGA-DSC-FTIR (a combination of two thermal analysis methods and a method for gas phase detection), an FTIR method for urea in the gas phase was developed for the qualitative and quantitative determination of urea and its decomposition products. Chemicals such as urea, biuret, cyanuric acid and melamine of p.a. quality were used in this method development. Beforehand, there was no FTIR method available to detect these substances; hence, the aim of this work was to develop an FTIR method to understand the degradation chain of urea. The combination of TGA and DSC was used for analysis of different samples, where urea, biuret, cyanuric acid and melamine in varying amounts have been weighted in for various experiments in order to study the temperature at which a phase transition or reaction occurs, i.e.

Sammanfogning av videosekvenser från flygburna kameror

The usage of Unmanned Aerial Vehicles (UAV) for several applications has in-creased during the past years. One of the possible applications are aerial imagecapturing for detection and surveillance purposes. In order to make the captur-ing process more efficient, multiple, cameraequipped UAV:s could fly in a for-mation and as a result cover a larger area. To be able to receive several imagesequences and stitch those together, resulting in a panoramavideo, a softwareapplication has been developed and tested for this purpose.All functionality are developed in the language C++ by using the software li-brary OpenCV. All implementations of different techniques and methods hasbeen done as generic as possible to be able to add functionality in the future.Common methods in computervision and object recognition such as SIFT, SURF and RANSAC have been tested..

Detektering av mänsklig närvaro i inomhusmiljö

One problem in today?s indoor air quality lies within insufficient ventilation. Dynamic ventilation can be obtained by implementing a Demand-Controlled ventilation (DCV) system. DCV systems adjust the ventilation in a building by calculating the impact made by its? occupants.

Överföring av elektrisk signal och effekt med magnetisk induktion.

This report tested the possibility of using induction as a mean for transferring data and power so that it can be implemented as a communication medium between a terminal and measuring head mounted in a measuring frame. This would eliminate the need for the cable bunches that are used today. For testing, signal generators were used to generateFSK-signals and were transferred with the help of inductors to the oscilloscope for signal detection, this to see how the coils used in the tests behaved. Simulations of a PLL were performed to see how good it could handle FSK-demodulation. With the help of a PLL IC and the simulations a working FSK-demodulator could be assembled.

SVIKTANDE ST?D TILL MILJ?POLITIK En kvantitativ studie kring politisk orientering och st?d till milj?politik i Sverige under kristider

Climate change is a major political challenge, and the public opinion can play a big role in addressing it. It?s therefore relevant to examine which factors influence individuals? support towards environmental policy. Previous research indicates that this can be understood from political orientation (Jagers m.fl 2018, s. 86-7).

Identifiering av parametrar för tillståndsbedömning av en vattenkraftstation

The report begins with a general inventory of possible technical faults in a hydropower plant and of possible fault indicating measurements. Then an investigation is made concerning a few different faults. Based on this investigation a choice on seal box condition and water leakage is made as problem for a more thorough examination, in which it is concluded that the turbine water leakage is larger when the turbine is put into operation. The examination ultimately results in a computer alarm for faults related to the seal box. Finally a few things are mentioned about flow measurement and pressure measurement in relation to the project as a whole..

Långtidsfrisk eller arbetsglädje - vad speglar arbetsrelaterad hälsa?

The work related illness has increased and instead of focusing on what?s causing it more and more efforts are put on trying to find the health factors within and outside the work environment. During the past years the term ?long-term health? has arisen; instead of focusing on the number of employees on the sick-list, the focus should be put on the number of employees that has a record of long-term health within an organization, i.e. health-presence.

Revisionsutskott i svenska aktiebolag: En statistisk analys

The recent development in several countries? legislation and best practice recommendations in relation to corporate governance in general and audit committees in particular have affected Swedish listed corporations in the form of the Swedish Corporate Governance Code and the coming EU-directive. This paper aims to discover what factors affected Swedish listed companies to form audit committees when this was entirely voluntary. We collected data from the annual reports of 121 Swedish listed companies and formed eleven hypotheses as to what factors we believed affected the voluntary formation of audit committees based on Agency Theory, economies of scale and circumstances specific to the Swedish environment. We then analyzed the data through the use of a multivariate logistic regression model.

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.

Radarupptäckt av artilleriraketer

Denna rapport behandlar en radarsensors förmåga att upptäcka 107 mm raketerberoende på hur sensorn positioneras i förhållande till skyddsobjektet.Fältförsök, underrättelser och stridserfarenheter har visat att dessa raketer ärvanligt förekommande samt svåra att detektera med radarsensorer.En modell för hur räckviddsökning beror på olika sensorpositioner har skapats genom att använda dokument från USA och forna Sovjetunionen beskrivande ballistik tillsammans med teorier för hur räckvidd påverkas av radarmålarea (RCS) samten beskrivning av RCS tillhandahållen av FOI. Resultat från körningar iMATLAB visar att sensorpositioner inom 300 meter från skyddsobjektet ärfördelaktiga vid en skottvidd av 3000 meter.Som tumregel för att uppnå maximal sensorprestanda bör strävan vara att placera sensorn på ett avståndfrån skyddsobjektet understigande 10% av förväntad skottvidd..

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