Neste trabalho estudamos um controlador denominado rastreador linear quadrático (RLQ) com custo médio de longo prazo (CMLP) para sistemas lineares com saltos markovianos (SLSM). Mostramos que o conceito de detetabilidade uniforme, juntamente com a hipótese de que o regulador linear quadrático associado ao RLQ tenha custo uniformemente limitado, são suficientes para que o controle obtido seja estabilizante em um certo sentido. A partir deste resultado, e considerando as mesmas hipóteses, demonstramos a existência do CMLP. Com isto, estendemos os resultados dispostos na literatura desde que consideramos um sistema variante no tempo e uma estrutura mais geral para a cadeia deMarkov. Além disto, avaliamos a aplicação deste controlador no planejamento da operação de um sistema hidrotérmico. Para isto, utilizamos o sistema de usinas do rio São Francisco, em dois casos de estudo, para comparar o desempenho do controlador estudado em relação à solução ótima para o problema, encontrada com o uso da programação dinâmica estocástica, e em relação à solução obtida via programação dinâmica determinística. Os resultados sugerem que o RLQ pode representar uma alternativa interessante para o problema de planejamento hidrotérmico / In the present work we study the reference tracking controller (RTC) for the long run average cost (LRAC) problem for Markov jump linear systems. We show that uniform detectability and an hypothesis that the linear quadratic regulator associated with the RTC has uniformly bounded cost, together, are sufficient conditions for the obtained control be exponentially stabilizing in a certain sense. This result allows us to demonstrate the existence of the LTAC under the same hypotheses. The results can be regarded as an extension of previous works, since we have considered a more general framework with time-varying systems and quite general Markov chains. As an applicatioin, we consider the operational planning of hydrothermal systems. We have considered some power plants of the Sao Francisco river, in two different scenarios, and we have compared the performances of the RTC and standard controls obtained by deterministic and stochastic dynamic programming, indicating that the RTC may be an interesting alternative for the hydrothermal planning problem

Neste trabalho estudamos a estabilidade assintótica de Lagrange para duas classes de sistemas, sob as hipóteses de detetabilidade fraca e de limitação do custo medio a longo prazo. Para sistemas lineares com saltos markovianos com rudo aditivo, a equivalência entre estabilidade e as condições mencionadas sera provada. Para sistemas dinâmicos generalizados, provaremos a estabilidade sob uma condição adicional / In this work we study Lagrange asymptotic stability for two classes of systems, under conditions of weak detectability and boundedness of the long run average cost. For Markov jump linear systems with additive noise, the equivalence between stability and the aforementioned conditions is proved. For generalized dynamical systems, we prove stability under an additional condition

The diploma thesis deals with the determination of the value of the company from the construction branch. The thesis is divided into two parts. The first part aims at the methods of the determination of the value of the company. The theoretical knowledge is applied in the second part, namely in subsections about strategic, financial analysis and the evaluation by the yield method of discounted cash flow. Programs Stratex and Evalent are used to determine the value. The conclusion of the thesis includes the determination of the value of the company applied to 1st January 2014.

Thesis (M.Pharm. (Pharmacy Practice))--North-West University, Potchefstroom Campus, 2006.

HIV/AIDS is already the leading cause of death worldwide (Unicef et al., 2004:10) with more than 5 million people out of a total of 46 million South Africans that were HIV positive in 2004, giving a total population prevalence rate of 11 per cent (Dorrington et al., 2004:1). Many people infected do not have access to even the basic drugs needed to treat HIV-related infections and other conditions (Wikipedia, 2004:3). The relative high price of many of the antiretroviral (ARV) drugs and diagnostics on the other hand are one of the main barriers to their availability in developing countries (Unicef et al., 2004:77). ARV drugs registered in South Africa include the Nucleoside/Nucleotide Reverse Transcriptase Inhibitors (NRTIs), Non-Nucleoside Reverse Transcriptase Inhibitors (NNRTIs) and Protease Inhibitors (PIs) (MCC, 2004:1). The objective of this study was to review, analyse and interpret the prescribing patterns of antiviral drugs, with special reference to antiretroviral drugs, in the private health care sector in South Africa by using a medicine claims database. A quantitative, retrospective drug utilisation review was performed. The data ranging from 1 January 2001 to 31 December 2001, 1 January 2002 to 31 December 2002, and 1 January 2004 to 31 December 2004 were used, dividing each year into three four-month periods, namely January to April, May to August, and September to December. It was found that 0.38 per cent (n=1 475 380) for 2001, 0.72 per cent (n=2 076 236) for 2002, and 1.68 per cent (n=2 595 254) for 2004 of all studied prescriptions for the research periods 2001, 2002, and 2004 respectively, contained ARV drugs. ARV drugs constituted 0.33 per cent (n=2 951 326) for 2001, 0.87 per cent (n=4 042 145) for 2002, and 1.92 per cent (n=5 305 882) for 2004 of the total number of medicine items prescribed for the study years 2001, 2002 and 2004 respectively. The total cost of ARV drugs amounted to R4 990 784.29, thus constituting 1.31 per cent of the total cost (R379 708 489) of all medicine items on the database for 2001, increased to R18 235 075.75, thus constituting 3.03 per cent of the total cost (R601 350 325) of all medicine items on the database for 2002, and increased to R34 714 483.64, thus constituting 5.25 per cent of the total cost (R661 223 146) of all medicine items on the database for 2004. It was found that 35.31 per cent (n=5 599) for 2001, 52.68 per cent (n=15 004) for 2002, and 74.27 per cent (n=43 482) for 2004 of all studied antiviral prescriptions for the research periods 2001, 2002, and 2004 respectively, contained ARV drugs. ARV drugs constituted 46.25 per cent (n=21 183) for 2001, 70.20 per cent (n=50 246) for 2002, and 85.87 per cent (n=118 718) for 2004 of the total number of antiviral medicine items prescribed for the study years 2001, 2002 and 2004 respectively. The total cost of ARV medicine items, represented 67.33 per cent (n=R4 990 784.29) during 2001, 84.72 per cent (n=R18 235 075.75) during 2002, and 91.20 per cent (n=R34 714 483.64) during 2004 of the total cost of all antiviral medicine items claimed through the database (n=R7412577.73 for 2001, n=R21523365.56 for 2002, and n=R38 064 347.38 for 2004). The average cost per ARV medicine items for 2004 increased from R317.93i190.80 for the period January to April to R369.2W219.50 for the period May to August, and decreased to R324.79±212.48 for the period September to December and resulted in a cost saving of R41 044.35 for the period May to August versus September to December for the ARV medicine items. The implementation of the pricing regulations could thus be a possible reason for this cost saving, due to fact that the single exit price only came into effect from May 2004. The weighted average number of ARV medicine items per prescription was 1.75*0.31 for 2001, increased to 2.35±0.03 to 2002 and remained stable on 2.35±0.02 for 2004. It was found that majority of prescriptions contained more combination ARV medicine items than single ARV medicine items, ranging from 6 834 (69.76 per cent; n=9 796) prescriptions containing combination ARV medicine items in 2001 and 32 941 (93.39 per cent; n=35 271) prescriptions containing combination ARV medicine items in 2002 to 98 805 (96.93 per cent; n=101 938) prescriptions containing combination ARV medicine items in 2004. Lastly, it was perceived that didanosine was the active ingredient with the largest prevalence for all three four-month periods of 2001 and also for the periods January to April and May to August of 2002, whilst efavirenz represented the active ingredient with the largest prevalence for the period September to December of 2002, and also for all three four-month periods of 2004. Didanosine represented the active ingredient with the highest total cost for the period January to April of 2001, whilst the combination of lamivudine/zidovudine represented the active ingredient with the highest total cost for the periods May to August and September to December of 2001, and also for all three-four month periods of 2002 and 2004. Nelfinavir has the highest average cost for period January to April of 2001, ritonavir for period May to August of 2001, and saquinavir mesylate for period September to December of 2001. Nelfinavir has the highest average cost for all three-four month periods of 2002, while didanosine has the highest average cost for all three four-month periods of 2004. / Thesis (M.Pharm. (Pharmacy Practice))--North-West University, Potchefstroom Campus, 2006

Nos últimos anos, com a aceleração da globalização, tem-se intensificado a atividade de análise e avaliação de investimentos. Dentre as diversas técnicas de mensuração de valor e risco, mereceu especial destaque as ferramentas de avaliação de empresas, em razão da significativa profusão de negociações de e entre empresas, que inclui grande número de fusões aquisições e parcerias. Em diferentes segmentos empresas privadas de capital fechado, passam a ser alvo de grandes companhias ou vislumbram vir a ser, o que traz a necessidade ao empresariado de saber qual o valor do seu negócio, qual o valor mínimo aceitável em uma negociação, seja de venda ou de compra de investimentos. Estas necessidades justificam a busca de ferramenta de valoração. Diante disto, este trabalho visa identificar, e discutir os principais aspectos relacionados à valoração de empresas. No levantamento bibliográfico foram identificados os principais modelos de valoração onde foram criticados, apontando limitações ou desvantagens; procurou-se identificar, dentre eles, o que se adaptaria para avaliar uma empresa de capital fechado dada a limitação de informações possíveis de serem levantadas na empresa, que fosse mais referendado pelos estudiosos e o mais utilizado neste momento. Optou-se então pelos modelos de Fluxo de Caixa Descontado (FCD) e Valor Econômico, comparando-os ao Valor Patrimonial Contábil. apresentando-se à empresa e acionistas um preço de referência para que possam iniciar negociações de compra ou venda de parte ou todo do negócio. No segmento supermercadista, nos últimos anos, houve grandes negociações, passando para um nível de concentração das 5 maiores redes de 61% do mercado nacional. No estudo de caso, realizado em uma empresa do ramo de supermercados, foi feito o levantamento dos dados históricos dos últimos 5 anos, e feitas as projeções para os próximos seis exercícios, sendo calculados ou estimados, também: o beta do setor, o ROIC, o WACC, o CAPM, o Capital Operacional Investido, o Spread e a composição do capital atual. Após aplicação das premissas e cálculo do período de projeção, foi calculado o valor da perpetuidade, adicionando-o aos dois modelos de avaliação, e com isso chegou-se a um mesmo valor de valoração da empresa, que confirmaram as afirmações encontradas na bibliografia. Após comparou-se o resultado da avaliação pelo FCD e pelo Valor Econômico com o valor Patrimonial Contábil sem ajustes, apresentando assim para a empresa uma ferramenta para avaliações ou projeções de cenários e a discrepância entre os valores contábeis e econômicos da empresa. / In the last years, due to the acceleration on globalization, the activity of analysis and evaluation of investments has been intensified. Among several techniques of measurement of value and risk, the tools for firm evaluation has got special notice for the reason that it has been a meaningful profusion and partnerships. In different segments, private owned companies become or are willing to become the target of big companies and so the entrepreneurs have the necessity to know the minimum value of their businesses in transactions of buying or selling investments. That necessity justifies the search for business valuation resources. Thus, this paper aims at identify and discuss the main aspects related to business valuation. In the bibliographic search the main models of business valuation resources were identified and passed judgment on their limitations or disadvantages. An attempt on identifying one among those resources which would adapt for evaluating a privately owned company and which would be referenced by scholars and most used at the moment was made. The difficulty found was due to limitation of possible information gathering from firms. The chosen alternative was the Discounted Cash Flow models – DCF – and Economic Value in comparison to Accounting Patrimonial Value to show the company and shareholders a referential price to start transactions of buying and selling of part or the whole business. In the supermarket segment, in the last years, there were huge negotiations ending up in a concentration of five big chains which represent 61% of Brazilian market. A case study carried in a supermarket gathered historical data from the last 5 years and from those, projections for the next 6 ones were made calculating the sector beta, ROIC, WACC, CAPM and the Operational Capital invested, Spread e the composition of updated capital. After applying the predictions and calculating the projection period, perpetual value was calculated by adding that to two models of appraisal and then getting to the same value of assessment which confirm the statements in the review of bibliography. Afterwards the result of the assessment was compared to DCF and to Economic Value with Accounting Patrimonial Value without adjustments featuring an evaluating or projecting scenarios and the discrepancy between accounting values and economic values within firms.

Nos últimos anos, com a aceleração da globalização, tem-se intensificado a atividade de análise e avaliação de investimentos. Dentre as diversas técnicas de mensuração de valor e risco, mereceu especial destaque as ferramentas de avaliação de empresas, em razão da significativa profusão de negociações de e entre empresas, que inclui grande número de fusões aquisições e parcerias. Em diferentes segmentos empresas privadas de capital fechado, passam a ser alvo de grandes companhias ou vislumbram vir a ser, o que traz a necessidade ao empresariado de saber qual o valor do seu negócio, qual o valor mínimo aceitável em uma negociação, seja de venda ou de compra de investimentos. Estas necessidades justificam a busca de ferramenta de valoração. Diante disto, este trabalho visa identificar, e discutir os principais aspectos relacionados à valoração de empresas. No levantamento bibliográfico foram identificados os principais modelos de valoração onde foram criticados, apontando limitações ou desvantagens; procurou-se identificar, dentre eles, o que se adaptaria para avaliar uma empresa de capital fechado dada a limitação de informações possíveis de serem levantadas na empresa, que fosse mais referendado pelos estudiosos e o mais utilizado neste momento. Optou-se então pelos modelos de Fluxo de Caixa Descontado (FCD) e Valor Econômico, comparando-os ao Valor Patrimonial Contábil. apresentando-se à empresa e acionistas um preço de referência para que possam iniciar negociações de compra ou venda de parte ou todo do negócio. No segmento supermercadista, nos últimos anos, houve grandes negociações, passando para um nível de concentração das 5 maiores redes de 61% do mercado nacional. No estudo de caso, realizado em uma empresa do ramo de supermercados, foi feito o levantamento dos dados históricos dos últimos 5 anos, e feitas as projeções para os próximos seis exercícios, sendo calculados ou estimados, também: o beta do setor, o ROIC, o WACC, o CAPM, o Capital Operacional Investido, o Spread e a composição do capital atual. Após aplicação das premissas e cálculo do período de projeção, foi calculado o valor da perpetuidade, adicionando-o aos dois modelos de avaliação, e com isso chegou-se a um mesmo valor de valoração da empresa, que confirmaram as afirmações encontradas na bibliografia. Após comparou-se o resultado da avaliação pelo FCD e pelo Valor Econômico com o valor Patrimonial Contábil sem ajustes, apresentando assim para a empresa uma ferramenta para avaliações ou projeções de cenários e a discrepância entre os valores contábeis e econômicos da empresa. / In the last years, due to the acceleration on globalization, the activity of analysis and evaluation of investments has been intensified. Among several techniques of measurement of value and risk, the tools for firm evaluation has got special notice for the reason that it has been a meaningful profusion and partnerships. In different segments, private owned companies become or are willing to become the target of big companies and so the entrepreneurs have the necessity to know the minimum value of their businesses in transactions of buying or selling investments. That necessity justifies the search for business valuation resources. Thus, this paper aims at identify and discuss the main aspects related to business valuation. In the bibliographic search the main models of business valuation resources were identified and passed judgment on their limitations or disadvantages. An attempt on identifying one among those resources which would adapt for evaluating a privately owned company and which would be referenced by scholars and most used at the moment was made. The difficulty found was due to limitation of possible information gathering from firms. The chosen alternative was the Discounted Cash Flow models – DCF – and Economic Value in comparison to Accounting Patrimonial Value to show the company and shareholders a referential price to start transactions of buying and selling of part or the whole business. In the supermarket segment, in the last years, there were huge negotiations ending up in a concentration of five big chains which represent 61% of Brazilian market. A case study carried in a supermarket gathered historical data from the last 5 years and from those, projections for the next 6 ones were made calculating the sector beta, ROIC, WACC, CAPM and the Operational Capital invested, Spread e the composition of updated capital. After applying the predictions and calculating the projection period, perpetual value was calculated by adding that to two models of appraisal and then getting to the same value of assessment which confirm the statements in the review of bibliography. Afterwards the result of the assessment was compared to DCF and to Economic Value with Accounting Patrimonial Value without adjustments featuring an evaluating or projecting scenarios and the discrepancy between accounting values and economic values within firms.

This disertation labour focuses on assessment of the financial situation analyzed company using the economic value added. In theoretical part is characterized economic value added, there is described its origin, calculation variants and the posibility of using this indicator. There are defined the necessary adjustments of accounting data for achieving economic data, procedures for determing the cost of capital and pyramid decoposition economic value added. The practical part is targeted to calculate economic value added by variant of entity and equity in rated company. It is targeted to compare the results of these two variants, to pyramid decomposition EVA equity in 2014 compare 2013 and to alternatives economic value added.

Made available in DSpace on 2010-04-20T20:15:11Z (GMT). No. of bitstreams: 0 Previous issue date: 1998-12-21T00:00:00Z / O trabalho aborda a questão do custo de capital em um contexto de mercados globalizados. Analisa as principais metodologias para definição das variáveis que compõem o Custo Médio Ponderado de Capital (Weighted Average Cost of Capital) e o impacto exercido pela segmentação/integração dos mercados financeiros mundiais nesta definição. Discute as relações internacionais de paridade (Purchasing Power Parity, Efeito Fisher, lnterest Rate Parity, entre outras) e suas implicações para a definição de custo de capital. Discorre sobre diversificação internacional de portfólios e instrumentos para captação de recursos no exterior, como eurobonds e ADR's, e discute a questão do custo de capital ser global ou local/divisional.

Sammanfattning Titel: Har ett företags utdelningspolicy någon betydelse?   Nivå: Examensarbete på Grundnivå (kandidatexamen) i ämnet företagsekonomi.   Författare: Pontus Kindlund och Andreas Wallgren   Handledare: Catherine Lions   Datum: 2018–01   Syfte: Tidigare forskning undersöker oftast utdelningspolicyns betydelse för investerarna. Därför har vi valt att se det från företagens perspektiv genom att undersöka hur ett företags utdelningspolicy påverkar företagets genomsnittliga kapitalkostnad.   Metod: Studien har en kvantitativ metod med hypotesprövningar och en deduktiv ansats där datan är inhämtad från Thompson Reuters Datastream. Regressionsanalyser har sedan utförts för att studera sambandet mellan företagens utdelningspolicy och företagens genomsnittliga kapitalkostnader.   Resultat och slutsats: Studiens resultat visar att det inte finns några omfattande samband mellan företagens utdelningspolicy och företagens genomsnittliga kapitalkostnader. Vår studie är därför i linje med studien från Modigliani och Miller (1961) angående utdelningspolicyns irrelevans.   Examensarbetets bidrag: Studiens resultat bidrar med kunskap som kan vara till nytta för företagsledningar som utarbetar företagens utdelningspolicy, eftersom oavsett val av utdelningspolicy kan det inte förväntas ha en signifikant påverkan på företagens genomsnittliga kapitalkostnad.   Förslag till fortsatt forskning: Då vår studie inte har tagit hänsyn till företagens investeringsmöjligheter så kvarstår det att även ta hänsyn till detta för att undersöka utdelningspolicyns påverkan på den genomsnittliga kapitalkostnaden.   Nyckelord: Utdelningspolicy, Genomsnittlig kapitalkostnad, Signalteori, Utdelningspolicyns irrelevans, Trade-off-teori / Abstract Title: Does a company’s dividend policy matter?   Level: Student thesis, final assignment for Bachelor Degree in Business Administration.   Author: Pontus Kindlund and Andreas Wallgren   Supervisor: Catherine Lions   Date: 2018–01   Aim: Previous research usually explores the importance of the dividend policy for investors. Therefore, we have chosen to see it from the corporate perspective by investigating how a company's dividend policy affects the company's weighted average cost of capital.   Method: The study has a deductive approach and a quantitative method of hypothesis testing and where the data is obtained from Thompson Reuters Datastream. Regression analysis has then been conducted to study the relationship between the dividend policy and the companies’ weighted average cost of capital.   Result & Conclusions: The study's results show that there is no general correlation between the company's dividend policy and the company's weighted average cost of capital. Our study is in line with the study by Modigliani and Miller (1961) regarding the irrelevance of the dividend policy.   Contribution of the thesis: The results of the study contribute to creating knowledge that may be useful to business executives who prepare the company's dividend policy, since any choice of dividend policy should not be expected to have a significant impact on the weighted average cost of capital.   Suggestions for future research: As our study has not taken into account the companies' investment opportunities, it remains to take this into consideration to investigate the impact of the dividend policy on the weighted average cost of capital.   Key words: Dividend policy, Weighted average cost of capital, Signaling theory, The irrelevance of a dividend policy, Trade-off theory