Mastitis is an inflammation that is caused in the udder tissue of cattle and which annually causes high costs within productions and the profitability of farms. The purpose of this study is to determine if udder inflammation affects both the amount of milk that produces and investigate how the protein and fat -content are affected. To be able to implement the study, I have used data from a farm in Värmland where mastitis is a common disease affecting the cows, and which reduces profitability annually. From the year 2015, a total of 134 cows on the farm where the study occurred were treated with antibiotics by a veterinarian, where up to half of the cows were affected by a clinically visible infection. Two groups have been used in the study where 45 cows affected by mastitis have been examined through test milking results and then compared with a control group consisting of healthy individuals where I have used cows that have not been visibly affected by mastitis. The results for the study of how the milk volume is affected showed a significant difference for a decrease in the quantity last year (P =0,036). Based on the results, it is concluded that clinical mastitis reduces the amount of milk and the content of the milk. / Mastit är en inflammation som orsakas i juvervävnaden hos nötkreatur och som årligen orsakar stora kostnader inom produktionen och lönsamheten på gårdar. Syftet med denna studie var att fastställa om juverinflammationer kan påverkar en nedgång inom den mängd mjölk som produceras samt undersöka hur protein- samt fetthalten påverkas eftersom innehållet är en viktig del av lönsamheten. För att kunna genomföra studien har jag använt mig av data från en gård i Värmland där mastit är en vanlig förekommande sjukdom som drabbar korna, och som årligen drar ner på lönsamheten. Från år 2015 har totalt 134 kor på gården där studien genomförts varit behandlade med antibiotika av veterinär där uppemot hälften av korna drabbades av en klinisk synlig infektion. Två grupper har använts i studien där 45 kor drabbade av mastit har undersökts genom provmjölkningsresultat och som sedan jämförts med en kontrollgrupp bestående av friska individer där kor som ej har varit synligt drabbade av mastit använts. Resultatet för undersökningen av hur mjölkmängden påverkas visade en signifikant skillnad för en minskning av mängden sista året (P=0,036) men ingen signifikant skillnad över fett och proteinhalten kunde ses. Utifrån resultatet dras slutsatsen att klinisk mastit minskar mjölkmängden medan innehållet av fett och protein förblir opåverkat.

The purpose of this paper is to analyze how consumer behavior related to food changed during the pandemic in Sweden. At the beginning of 2020 a global pandemic named Covid-19 hit all the countries, Sweden being one of them.  The pandemic has forced everyone to change their usual lifestyle in order to be safe from the virus. The consumers' food choices have been changed during the pandemic, this topic would be interesting to be researched by the authors. Since the pandemic has urged worldwide, most of the countries have been affected because of it. The researchers have conducted a  questionnaire in order to be able to analyze the situation in Sweden from the consumers point of view. The findings indicate changes in consumer behavior and buying behavior that are tied with the pandemic times in the context of health. Some changes have been observed in product buying for food consumption as many people bought healthier products.

Background: The year 2022 was eventful and marked by a significant stock market decline. Private investors faced increased pressure to remain calm and not fall into the trap of psychological biases that are particularly destructive during periods like this one. This has contributed to why individuals choose to seek guidance from professional advisers. But the question is whether professional advisers could avoid these psychological biases during this period? A professional adviser should, based on their education, have the ability to minimize the risk of psychological biases that investments can lead to. Their work includes mandatory knowledge updates from the license issuer, Swedsec. The knowledge update 2021 included knowledge of behavioral finance, but the question is whether this knowledge has changed the work of a professional adviser? Because if even professional advisers cannot avoid psychological pitfalls, what is the point of taking guidance? Purpose: The purpose of the study is to map professional advisers' knowledge of behavioral finance and how overconfidence, herd behavior and the disposition effect can be observed in their advisory process during the 2022 stock market decline. Furthermore, the study aims to analyze and create an understanding of how the work of professional advisers has changed since the knowledge update 2021. Method: To fulfill the purpose of the study, a qualitative method has been used and nine semi-structured interviews with Swedsec-licensed professional advisers have been held. Furthermore, an abductive approach has been adopted to have the opportunity to test the interaction between previous theories and the reality but also to be able to find new theories and patterns based on real observations. Conclusion: The results of the study showed that the knowledge of behavioral finance among professional advisers is inadequate but not necessarily wrong. The psychological biases have, more or less, been observed in the advisory process during 2022 where the most prominent bias was the disposition effect. Despite the lack of knowledge, professional advisers have developed unconscious strategies that can mitigate, but not eliminate, the risk of falling into the trap of psychological biases. Finally, none of the advisers have changed their work after Swedsec's 2021 knowledge update to prevent irrational behavior. / Bakgrund: Börsåret 2022 var ett händelserikt år som präglades av en betydande börsnedgång. Icke- professionella investerare stod således inför ökad press att behålla lugnet och inte falla offer för psykologiska bias som är särskilt destruktiva i perioder som denna. Detta har bidragit till varför individer väljer att söka vägledning från professionella rådgivare. Frågan är dock om professionella rådgivare själva kunde motstå att falla offer för psykologiska bias under den här perioden? En professionell rådgivare bör, utifrån deras utbildning, ha förmågan att minimera risken att falla för psykologiska bias i investeringssammanhang. Deras arbete innefattar även obligatoriska kunskapsuppdateringar från licensutgivaren Swedsec. Kunskapsuppdateringen 2021 innehöll att rådgivaren ska ha kännedom kring ekonomisk psykologi, men frågan är om den kunskapen har nått ut och förändrat de professionella rådgivarnas arbete? För om inte ens professionella rådgivare lyckas motstå psykologiska fallgropar, kommer deras vägledning således mer stjälpa än hjälpa kunden? Syfte: Syftet med studien är att kartlägga professionella rådgivares kännedom kring beteendefinans samt hur överkonfidens, flockbeteende och dispositionseffekten kan tydas i deras rådgivning under 2022 års börsnedgång. Vidare syftar studien till att analysera och skapa förståelse för hur arbetet förändrats hos de professionella rådgivarna sedan kunskapsuppdateringen 2021. Metod: För att uppfylla studiens syfte har en kvalitativ metod använts och nio semistrukturerade intervjuer med Swedsec-licenserade professionella rådgivare genomförts. Vidare har en abduktiv ansats antagits för att ha möjlighet att testa samspelet mellan tidigare teorier och verkligheten men även kunna hitta nya teorier och mönster utifrån verkliga observationer. Slutsats: Studiens resultat visade att det fanns bristande kännedom kring beteendefinans bland de professionella rådgivarna. Det betyder dock inte att den befintliga kunskapen är felaktig. Under börsåret 2022 kunde de utvalda börspsykologiska faktorerna antydas i rådgivningen, men i varierande grad, där den mest framträdande biasen var dispositionseffekten. Trots den bristfälliga kännedomen har de professionella rådgivarna utvecklat omedvetna strategier för att mildra, men inte eliminera, risken att falla för psykologiska bias. Slutligen har ingen av rådgivarna förändrat sitt arbetssätt efter Swedsecs kunskapsuppdatering från 2021 för att förhindra irrationellt beteende.

INTRODUÇÃO: A escolha entre diferentes modelos de análise de decisão introduz variabilidade nos resultados das avaliações econômicas. Modelos estáticos não captam os efeitos indiretos da vacinação comprometendo a avaliação geral dos benefícios da vacinação. Neste trabalho foram desenvolvidos um modelo dinâmico e um modelo estático para a análise de custo-efetividade (ACE) da vacina contra varicela e foram comparados os resultados obtidos com os dois modelos. MÉTODOS: Avaliação econômica completa do tipo ACE usando modelagem. As análises compararam duas estratégias: 1) introdução da vacinação infantil de rotina aos 12 meses de vida; versus 2) situação existente (vacinação após os surtos em creches e vacinação de imunodeprimidos). As análises foram conduzidas no horizonte temporal de 30 anos. RESULTADOS: O modelo dinâmico estimou que na ausência do programa de vacinação ocorreriam 2 915 294 casos de varicela por ano no Brasil, resultando em 879 095 casos ambulatoriais, 4 507 hospitalizações, 119 mortes e 4 casos de sequela. O custo total anual da varicela foi estimado em R$27 378 957 para a sociedade e em R$14 412 610 para o sistema de saúde. A razão de custo-efetividade incremental (RCEI) por ano de vida salvo foi R$14 749 na perspectiva da sociedade e R$16 582 na perspectiva do sistema de saúde. O modelo estático estimou que na ausência do programa de vacinação ocorreriam 1 656 547 casos de varicela por ano no Brasil, resultando em 629 488 casos ambulatoriais, 5 120 hospitalizações, 82 mortes e 1 caso de sequela. O custo total anual da varicela foi estimado em R$17 311 412 para a sociedade e em R$9 570 551 para o sistema de saúde. A RCEI por ano de vida salvo foi R$35 254 na perspectiva da sociedade e R$36 599 na perspectiva do sistema de saúde. Aplicando o limiar de custoefetividade da Organização Mundial de Saúde (OMS) aos resultados obtidos com o modelo dinâmico a vacinação foi considerada uma estratégia custo-efetiva o mesmo não aconteceu com os resultados do modelo estático. Na análise de sensibilidade da taxa de incidência utilizada no modelo estático a RCEI por ano de vida salvo foi R$19 905 na perspectiva da sociedade e R$21 176 na perspectiva do sistema de saúde e a vacinação foi considerada custo-efetiva. CONCLUSÃO: A estimativa de custo-efetividade de programas de vacinação exige o uso de um modelo apropriado. O que é julgado como apropriado será influenciado pelo contexto da avaliação proposta, conhecimento da epidemiologia da doença, disponibilidade de dados e existência de uma equipe qualificada para construir e interpretar os resultados desses modelos. / BACKGROUND: The choice between different decision analysis models introduces variability in the results of economic evaluations. Static models do not take into account the indirect effects of vaccination, thus compromising the overall assessment of vaccination benefits. This work developed two models one dynamic and another static to conduct cost-effectiveness analyses (CEA) of varicella vaccine, comparing the results of the two. METHODS: Comprehensive economic evaluation CEA using modeling. The analysis compared two strategies: 1) introduction of routine vaccination for children under 12 months, versus 2) current situation (vaccination after outbreaks in nurseries and vaccination of immunocompromised). The time horizon of the analysis was 30 years. RESULTS: The dynamic model estimated that in the absence of the vaccination program, 2 915 294 cases of varicella occurred every year in Brazil, resulting in 879,095 outpatient cases, 4,507 hospitalizations, 119 deaths and 4 sequela cases. The total annual cost of varicella was estimated at R$ 27,378,957 for the society and at R$ 14,412,610 for the health care system. From the perspective of society, the incremental cost-effectiveness ratio (ICER) was R$ 14,749 per life-year saved, while from the perspective of the health care system, it amounted to R$ 16,582. The model estimated that, in the absence of a vaccination program, there would be 1,656,547 cases of varicella every year in Brazil, resulting in 629,488 outpatient cases, 5,120 hospitalizations, 82 deaths and 1 case of sequela. The total annual cost of varicella was estimated at R$ 17,311,412 for the society, and at R$ 9,570,551 for the health care system. The ICER was R$ 35,254 and R$ 36,599 from the perspective of society and the health care system, respectively. When applying the World Health Organization (WHO)\'s cost-effectiveness threshold to the dynamic model results, vaccination was considered a cost-effective strategy; this was nevertheless not the case with the static model. In the sensitivity analysis for the incidence rate employed in the static model, the ICER was R$ 19,905 per life-year saved from the perspective of society, and R$ 21,176 from the perspective of the health care system, with vaccination deemed cost-effective. CONCLUSION: Estimating the cost-effectiveness of vaccination programs requires the use of an appropriate model. Establishing an appropriate course of action will depend on the context of proposal evaluation, understanding of disease epidemiology, availability of data, and the existence of a qualified team to build these models and interpret their results.

This work is mainly focused on the environment of stock markets. It aims to identify some psychological and sociological factors relating to investors' behaviour which may help to justify occurrence of excessive movements in stock market prices resulting in price "bubbles" and stock market crashes. It emphasizes that the assumptions for the validity of the Efficient Markets Hypothesis based on dominant position of rational investors in stock markets have been empirically undermined by number of experiments and observations. As one of the most vigorous alternative challenging the Efficient Market Hypothesis is now considered the theory of behavioural finance stressing some imperfections of human behaviour which may substantially influence dynamics of stock market prices in both directions.

Ce travail a pour objectif de mieux comprendre l’économie animale dans le monde égéen néolithique. Il s’appuie d’une part sur l’étude archéozoologique de trois sites localisés dans le Péloponnèse et en Macédoine : Kouphovouno, Pigi Athinas et Kryoneri. D’autre part, des analyses de micro-usures ont été réalisées sur les dents d’animaux des assemblages ostéologiques de Kouphovouno, Lerne, Kitsos, Pigi Athinas, Kryoneri et Sitagroi afin de restituer les conditions d’élevage et l’environnement passé. Ces données ont ensuite été intégrées dans une perspective géographique et chronologique plus large, ce qui nous a permis de révéler une adaptation optimale de l’homme au milieu et aux contraintes socio-économiques tant dans les choix d’élevage que dans l’exploitation de la faune elle-même / The objective of this work is to increase our knowledge of animal economy during the Neolithic in the Aegean. This study is uses archaeozoological studies of three settlements located in Peloponnese (Kouphovouno) and Macedonia (Pigi Athinas and Kryoneri) as well as, dental microwear on the animal teeth from six assemblages, Kouphovouno, Lerna, Kitsos, Pigi Athinas, Kryoneri and Sitagroi in order to reconstruct conditions of breeding and the paleoenvironment. These data are then placed in the context of a wider geographical and chronological perspective, what allows us to reveal an optimal adaptation of man to his environment and to socio-economic constraints both in choices of breeding and in exploitation of the fauna itself.

The purpose of this thesis was to describe the transfer of genetic potential of sows in production sphere and evaluate concrete results in reproduction breeding sows Agricultural Society Kosova Hora. On large-scale farrowing sows were evaluated Doublovičky basic herd of sows, which consisted of 440 to 520 pieces. sows. The basic herd always has been about 35 nucleic sows (P 1065). The rest of the herd was an offspring of hybrids F1 (C 1023) program the PIC. The sows P 1065 were investigated causes selecting progeny namely: 1) For lack of development, which was evaluated from birth to breeding gilts adulthood. 2) The number and formation of the teats. For breeding were required to at least 12. They can not be crater, but well formed to have good piglets suck breast milk from them. 3) Reproduction in gilts were evaluated after conception periodic (cyclic) heat. The minimum requirement for the first 8 piglets which are born alive. For the basic herd was evaluated the age structure. It was incorporated into three groups and evaluated that, the largest selection of sows was for lack of milk production, limb injuries, poor breeding condition and the possibility of further embedding. The largest selection of sows takes place after the third to fifth lactation.

The work is focused on the performance of milking robots in the herd's controlled movemement system. The popularity of this method of the milk gaining in the world and in the Czech Republic is increasing every year. The reason is mainly the excellent results in increasing the labour productivity and welfare of dairy cows. For this thesis, a stable building was selected for livestock breeding with the market production of milk using AMS with the controlled movement of the herd.

[pt] A presente tese é composta por três pesquisas. A primeira pesquisa buscou averiguar o relacionamento entre o FXvol e os retornos futuros da taxa cambial e do índice de mercado de ações, dado que o índice de volatilidade FXvol é visto como um termômetro da incerteza do investidor um período a frente. Investiga-se então a relação contemporânea entre o FXvol, a Ptax e o Ibovespa, bem como a capacidade do FXvol de captar a possível relação entre o nível de incerteza presente no mercado e as variações relativas futuras da taxa de câmbio e do índice de ações. A segunda pesquisa comparou os modelos GARCH tradicionais e o modelo GARCH com troca de regimes no que tange seu poder de previsão da volatilidade cambial. Buscou-se comparar o desempenho de cada um dos modelos em uma situação real de utilização, no caso, no cálculo do Valor em Risco de uma carteira cambial. A terceira pesquisa buscou identificar a existência do efeito manada no mercado brasileiro e compreender a influência do câmbio nesse efeito, devido à importância do mercado cambial para a realidade brasileira. A metodologia compreendeu dois passos, em um primeiro momento buscou-se analisar a média do efeito através de regressões tradicionais e num segundo momento estudar a variação do efeito ao longo do tempo através do método do Filtro de Kalman. / [en] The present thesis consists of three researches. The first research sought to ascertain the relationship between FXvol and future exchange rate and stock market index returns as the FXvol volatility index is viewed as a thermometer of investor uncertainty for a period ahead. The contemporary relationship between FXvol, Ptax and Ibovespa, as well as the ability of FXvol to capture the possible relationship between the level of uncertainty present in the market and the relative future return of the exchange rate and the stock index. The second research compared the traditional GARCH models and the GARCH model with regime changes regarding its power to predict the exchange rate volatility. We attempted to compare the performance of each of the models in a real situation of use, in this case, in the calculation of the Value at Risk of an exchange portfolio. The third research sought to identify the existence of the herd effect in the Brazilian market and to understand the influence of the exchange rate in this effect, due to the importance of the exchange market for the Brazilian market. The methodology comprised two steps, initially attempting to analyze the mean of the effect through regressions and in a second moment to study the variation of the effect over time through the Kalman Filter method.

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