The need for a more authoritative approach to investment decision-making and cost control has been a requirement of office spending for many years now. The commercial offices find itself in an increasingly demanding position to allocate its budgets as wisely and prudently as possible. The significant percentage of total spending on buildings demands a more accurate and adaptable method of achieving quality of service within the constraints on the budgets. By adoption of life cycle costing techniques with risk management, practitioners have the ability to make accurate forecasts of likely future running costs. This thesis presents a novel framework (Artificial Neural Networks and probabilistic simulations) for modelling of operating and maintenance historical costs as well as economic performance measures of LCC. The methodology consisted of eight steps and presented a novel approach to modelling the LCC of operating and maintenance costs of two sustainable commercial office buildings. Finally, a set of performance measurement indicators were utilised to draw inference from these results. Therefore, the contribution that this research aimed to achieve was to develop a dynamic LCC framework for sustainable commercial office buildings, and by means of two existing buildings, demonstrate how assumption modelling can be utilised within a probabilistic environment. In this research, the key themes of risk assessment, probabilistic assumption modelling and stochastic assessment of LCC has been addressed. Significant improvements in existing LCC models have been achieved in this research in an attempt to make the LCC model more accurate and meaningful to estate managers and high-level capital investment decision makers A new approach to modelling historical costs and forecasting these costs in sustainable commercial office buildings is presented based upon a combination of ANN methods and stochastic modelling of the annual forecasted data. These models provide a far more accurate representation of long-term building costs as the inherent risk associated with the forecasts is easily quantifiable and the forecasts are based on a sounder approach to forecasting than what was previously used in the commercial sector. A novel framework for modelling the facilities management costs in two sustainable commercial office buildings is also presented. This is not only useful for modelling the LCC of existing commercial office buildings as presented here, but has wider implications for modelling LCC in competing option modelling in commercial office buildings. The processes of assumption modelling presented in this work can be modified easily to represent other types of commercial office buildings. Discussions with policy makers in the real estate industry revealed that concerns were held over how these building costs can be modelled given that available historical data represents wide spending and are not cost specific to commercial office buildings. Similarly, a pilot and main survey questionnaire was aimed at ascertaining current level of LCC application in sustainable construction; ranking drivers and barriers of sustainable commercial office buildings and determining the applications and limitations of LCC. The survey result showed that respondents strongly agreed that key performance indicators and economic performance measures need to be incorporated into LCC and that it is important to consider the initial, operating and maintenance costs of building when conducting LCC analysis, respondents disagreed that the current LCC techniques are suitable for calculating the whole costs of buildings but agreed that there is a low accuracy of historical cost data.

Até cerca de vinte anos, o termo Corporate Governance (Governança Corporativa) não existia na língua inglesa. Os códigos de boas práticas de Governança Corporativa começaram a surgir no início dos anos noventa na Inglaterra, nos Estados Unidos e no Canadá, em resposta ao desempenho insatisfatório de companhias líderes, percebido como uma deficiência de efetividade dos conselhos de administração, e em resposta às pressões exercidas pelos investidores institucionais. No Brasil, o termo Governança Corporativa é ainda mais recente, mas já começa a ser preocupação e a merecer a atenção de pesquisadores, Bolsa de Valores e associações. Este estudo objetiva identificar possíveis relações entre variáveis independentes, representativas de mecanismos de Governança Corporativa, e medidas de performance econômica de empresas integrantes do Índice Brasil IBX da Bolsa de Valores de São Paulo BOVESPA, com dados do período de 1997 a 2001.Utilizando a técnica estatística de dados em painel, modelo de componentes de erros, trabalha-se 16 variáveis independentes representando os mecanismos de Governança Corporativa: concentração de propriedade (5 variáveis), características do conselho de administração (3 variáveis), capital votante (1 variável), remuneração da diretoria executiva (2 variáveis), política financeira (3 variáveis), controle interno (1 variável) e mais uma variável de controle representando o tamanho das empresas. Essas variáveis são regredidas contra cada uma das cinco variáveis de medidas de performance econômica estudadas. Tais variáveis mediram o Market Value Added, a razão preço de mercado e valor patrimonial da ação, TOBINS Q, rentabilidade sobre o ativo e rentabilidade sobre o patrimônio líquido. Os resultados indicam que a concentração de propriedade, o capital votante, a remuneração da diretoria executiva e a política financeira são relacionadas à performance econômica. Surpreendentemente, o capital votante e a remuneração da diretoria executiva são negativamente relacionados à performance. Observa-se, também, que a medida de performance econômica utilizada faz diferença no estudo dos mecanismos de Governança Corporativa, pois aquelas puramente contábeis não apresentaram qualquer relação com os mecanismos testados. Este estudo, com esta abrangência de mecanismos, variáveis e período tratado, está dentre os estudos empíricos de Governança Corporativa pioneiros no Brasil. Espera-se oferecer uma contribuição aos acadêmicos interessados no assunto, bem como a acionistas, gestores, analistas de mercado, consultores, administradores de Bolsa de Valores, órgãos reguladores e associações de classe. / Up until twenty years go, the term Corporate Governance didnt exist in the English language. The codes of good practices of Corporate Governance began to arise in the early nineties in England, in the United States and in Canada, as an answer to an unsatisfactory performance of leading companies - recognized as a deficiency of effectiveness in the board of directors and also as an answer to the pressures exerted by institutional investors. In Brazil, the term Corporate Governance is still more recent, but begins to be pondered and to deserve attention of researchers, of Stock Exchanges and associations. This study aims to identify possible relationship among independent variables, representative of Corporate Governance mechanisms, and measures of economic performance of enterprises of the Brazil Index IBX of the São Paulo Stock Exchange BOVESPA, with data referring to the period comprehended between 1997 and 2001. Using the statistic technique of panel data, model of error components, we work with 16 independent variables representing the Corporate Governance mechanisms: concentration of propriety (5 variables), characteristics of the board of directors (3 variables), voting capital (1 variable), remuneration of the executive directorate (2 variables), financial policy (3 variables), internal control (1 variable), and one more control variable, representing the size of the enterprises. These variables are regressed against each one of the five variables of the studied economic performance measures. Such variables have measured up the Market Value Added, the market to book value price ratio, TOBINS Q, profitability over the assets and profitability over the net equity. The results indicate that the property concentration, the voting capital, the remuneration of the executive directorate and the financial policy are related to the economic performance. Surprisingly, the voting capital and the remuneration of the executive directorate are negatively related to performance. We can also observe that the economic performance measure utilized makes difference in the study of the Corporate Governance mechanisms, because that ones purely accountants doesnt have any relation with the mechanisms tested. This study, comprising such diverse mechanisms, variables and also the observed period, is among the leading empiric studies of Corporate Governance in Brazil. We hope to offer a contribution to the academics holding an interest in the matter, as well as to shareholders, managers, market analysts, consultants, Stock Exchange administrators, regulating bodies and class associations.

Até cerca de vinte anos, o termo Corporate Governance (Governança Corporativa) não existia na língua inglesa. Os códigos de boas práticas de Governança Corporativa começaram a surgir no início dos anos noventa na Inglaterra, nos Estados Unidos e no Canadá, em resposta ao desempenho insatisfatório de companhias líderes, percebido como uma deficiência de efetividade dos conselhos de administração, e em resposta às pressões exercidas pelos investidores institucionais. No Brasil, o termo Governança Corporativa é ainda mais recente, mas já começa a ser preocupação e a merecer a atenção de pesquisadores, Bolsa de Valores e associações. Este estudo objetiva identificar possíveis relações entre variáveis independentes, representativas de mecanismos de Governança Corporativa, e medidas de performance econômica de empresas integrantes do Índice Brasil IBX da Bolsa de Valores de São Paulo BOVESPA, com dados do período de 1997 a 2001.Utilizando a técnica estatística de dados em painel, modelo de componentes de erros, trabalha-se 16 variáveis independentes representando os mecanismos de Governança Corporativa: concentração de propriedade (5 variáveis), características do conselho de administração (3 variáveis), capital votante (1 variável), remuneração da diretoria executiva (2 variáveis), política financeira (3 variáveis), controle interno (1 variável) e mais uma variável de controle representando o tamanho das empresas. Essas variáveis são regredidas contra cada uma das cinco variáveis de medidas de performance econômica estudadas. Tais variáveis mediram o Market Value Added, a razão preço de mercado e valor patrimonial da ação, TOBINS Q, rentabilidade sobre o ativo e rentabilidade sobre o patrimônio líquido. Os resultados indicam que a concentração de propriedade, o capital votante, a remuneração da diretoria executiva e a política financeira são relacionadas à performance econômica. Surpreendentemente, o capital votante e a remuneração da diretoria executiva são negativamente relacionados à performance. Observa-se, também, que a medida de performance econômica utilizada faz diferença no estudo dos mecanismos de Governança Corporativa, pois aquelas puramente contábeis não apresentaram qualquer relação com os mecanismos testados. Este estudo, com esta abrangência de mecanismos, variáveis e período tratado, está dentre os estudos empíricos de Governança Corporativa pioneiros no Brasil. Espera-se oferecer uma contribuição aos acadêmicos interessados no assunto, bem como a acionistas, gestores, analistas de mercado, consultores, administradores de Bolsa de Valores, órgãos reguladores e associações de classe. / Up until twenty years go, the term Corporate Governance didnt exist in the English language. The codes of good practices of Corporate Governance began to arise in the early nineties in England, in the United States and in Canada, as an answer to an unsatisfactory performance of leading companies - recognized as a deficiency of effectiveness in the board of directors and also as an answer to the pressures exerted by institutional investors. In Brazil, the term Corporate Governance is still more recent, but begins to be pondered and to deserve attention of researchers, of Stock Exchanges and associations. This study aims to identify possible relationship among independent variables, representative of Corporate Governance mechanisms, and measures of economic performance of enterprises of the Brazil Index IBX of the São Paulo Stock Exchange BOVESPA, with data referring to the period comprehended between 1997 and 2001. Using the statistic technique of panel data, model of error components, we work with 16 independent variables representing the Corporate Governance mechanisms: concentration of propriety (5 variables), characteristics of the board of directors (3 variables), voting capital (1 variable), remuneration of the executive directorate (2 variables), financial policy (3 variables), internal control (1 variable), and one more control variable, representing the size of the enterprises. These variables are regressed against each one of the five variables of the studied economic performance measures. Such variables have measured up the Market Value Added, the market to book value price ratio, TOBINS Q, profitability over the assets and profitability over the net equity. The results indicate that the property concentration, the voting capital, the remuneration of the executive directorate and the financial policy are related to the economic performance. Surprisingly, the voting capital and the remuneration of the executive directorate are negatively related to performance. We can also observe that the economic performance measure utilized makes difference in the study of the Corporate Governance mechanisms, because that ones purely accountants doesnt have any relation with the mechanisms tested. This study, comprising such diverse mechanisms, variables and also the observed period, is among the leading empiric studies of Corporate Governance in Brazil. We hope to offer a contribution to the academics holding an interest in the matter, as well as to shareholders, managers, market analysts, consultants, Stock Exchange administrators, regulating bodies and class associations.