This academic work is based on remarkable works of economists Ramsey, Cass, Koopmans and Kaldor, it brings closer the intertemporal growth theory and its empirical implications on the Czech economy. Simply the purpose of this academic work is to analyse investment and its development in the Czech economy, theoretically identify and empirically study it. Furthermore, to monitor investments by different types and sectors. The study also is committing to better comprehension of mutual effects of capital formation and economic growth.

A noção de livre convencimento estipula ao julgamento de processos judiciais uma investigação sobre fatos amparada em avaliação epistemológica. Essa estratégia, entretanto, apresenta dificuldades insuperáveis nas diversas formulações desse tipo de raciocínio por não oferecer respostas definitivas para solucionar problemas práticos, como aqueles envolvidos na concretização do direito, levando a graus diferentes de dúvida. Diante desse quadro surge a pergunta sobre qual nível de confirmação será aceito para respaldar uma decisão. Esse trabalho propõe como solução a tal aporia uma aproximação dos argumentos utilizados para a decisão em matéria de fato à estrutura dos argumentos práticos. Assim, além das reflexões epistemológicas, incorporam-se elementos morais e políticos em seu esquema central. Por meio dessa conclusão são introduzidos obrigatoriamente ao raciocínio judicial o que se denomina critérios de suficiência, orientações sobre o grau de comprovação das versões levantadas num caso concreto. Esse instituto, além de imprescindível para viabilizar a racionalidade dos juízos de fato, assume ainda a função de distribuir o risco de decisões equivocadas entre os litigantes. Trata-se de elemento de legitimação das decisões em matéria de fato, mediante a argumentação dos riscos que o processo envolve. Esse raciocínio não é de forma alguma ignorado pela dogmática jurídica brasileira, embora não seja adequadamente sistematizado. Daí a importância de sua abordagem teórica, a demonstrar que é requisito imprescindível de legitimação das decisões sobre fatos tomadas nos processos judiciais, e verificação prática de diversos institutos, integralmente compatíveis com essa proposição. A partir de experiências jurídicas que tratam do assunto de modo sistematizado a mais tempo, propõe-se uma discussão sobre os termos que devem ser observados no ordenamento brasileiro em acordo com suas características. / The idea of free proof stipulates to judicial process decision an investigation over facts supported only by epistemological evaluation. This strategy, however, presents unbearable difficulties in the various manifestations of this kind of reasoning, as it does not offers definitive answers to solve practical problems, like those involved in applying the law, which leads to different degrees of doubt. Considering this picture, emerges the question about what level of confirmation will be accepted to sustain a decision. This dissertation proposes as a solution to the presented aporia an approximation of the arguments utilized to decide about facts to the structure of practical argumentation. Thus, beyond epistemological reasons, moral and political elements are incorporate to its central sketch. Through this conclusion are necessarily introduced to judicial reasoning what is called standards of proof, guidance about the degree of confirmation which versions must sustained to be successful on specific situations. This institute, additionally to its importance to validate the rationality of factual decisions, it assumes the purpose of distributing the risk of wrong perceptions among litigants. Its an element of legitimating decisions about facts, by reasoning the risks that the process handles. This reasoning is not at all ignored by Brazilian law, in despite of its lack of systematization. Hence the importance of its theoretical approach, which demonstrates that is an indispensible requirement of legitimacy to the decisions about facts taken in judicial processes, and of its practical approach, verifying the compatibility of several law mechanisms to this proposition. Build on juridical experiences that study the subject in an systematized fashion and longer than our occupation of the subject, it is proposed a discussion about the terms in which these should be observed in Brazilian law, in accordance to its characteristics.

L’objectif de cette recherche consiste à identifier et comparer les potentialités de l'entrepreneur migrant de retour à celles de son homologue Local. Rappelons que bien qu'un nombre important de recherches a traité l'entrepreneuriat et les caractéristiques entrepreneuriales, aucune, à notre connaissance, n'a étudié les potentialités de l'entrepreneur migrant de retour. Le souci de combler le manque de recherches gestionnaires et de contribuer au débat scientifique sur cette thématique nous a conduit à nous appuyer sur deux principaux paradigmes des traits et des faits de l'entrepreneur pour asseoir le concept de potentialités entrepreneuriales. Le corpus théorique obtenu s'appuie sur le modèle d'Yvon GASSE. Il établit un lien entre les différentes approches des traits et faits (caractéristiques et comportements), intègre les facteurs extrinsèques (milieu) et conduit à faire émerger le modèle conceptuel de notre thèse. Ce corpus théorique est relayé par le questionnaire adapté de Gasse qui a été administré à un échantillon de 393 entrepreneurs Marocains MRE (40%) et Locaux (60%). Les MRE sont les Marocains Résidents à l’Etranger revenus au Maroc pour créer leur entreprise. Les Locaux sont ceux qui résident depuis toujours au Maroc et qui sont entrepreneurs. Ce sont donc deux types d'entrepreneurs d'origine Marocaine mais avec des parcours de vie différents (migrants et non-migrants). Les 393 questionnaires sont soumis aux techniques multidimensionnelles d’analyse de données approfondies. Les résultats obtenus permettent de répondre à notre question de recherche : le niveau des potentialités de l’entrepreneur migrant de retour est diffèrent de celui de l’entrepreneur Local. L'expérience migratoire a permis à l'entrepreneur MRE de développer un niveau de potentialités entrepreneuriales plus élevé que celui de son homologue Local. De tels résultats font émerger des leviers originaux pouvant alimenter les dispositifs d’accompagnement endogènes. Leur combinaison au test de Cronbach fournit une grille réduite et adaptée du modèle de Gasse augurant un accompagnement différencié des futurs entrepreneurs MRE et Locaux. / The objective of this research is to identify and compare the potentiality of the return migrant entrepreneur back to those of his Local counterpart. It should be recalled that while a significant number of research has addressed entrepreneurship and entrepreneurial characteristics, none, to our knowledge, has studied the potential of the returning migrant entrepreneur in relation to his Local counterpart. The concern to fill the lack of managerial research and to contribute to the scientific debate on this topic has led us to rely on two main paradigms of the traits and the facts of the entrepreneur to establish the concept of entrepreneurial potentials. The theoretical corpus obtained is based on the model of Yvon GASSE. It establishes a link between the different approaches of traits and facts (characteristics and behaviors), incorporates extrinsic factors (middle) and leads to the emergence of the conceptual model of our thesis. This theoretical corpus is relayed by the adapted questionnaire of Gasse which was administered to a sample of 393 Moroccan entrepreneurs MRE (40%) and Local (60%). The MRE are Moroccan residents abroad who have returned to Morocco to create their business. The premises are those who have always been resident in Morocco and who are entrepreneurs. They are therefore two types of entrepreneurs of Moroccan origin but with different life paths (migrant and non-migrant). The 393 questionnaires are subject to multi-dimensional data analysis techniques. The results obtained allow us to answer our research question: the level of the potential of the returning entrepreneur is different from that of the Local contractor. The migratory experience has enabled the MRE entrepreneur to develop a higher level of entrepreneurial potential than that of his Local counterpart. Such results are emerging from the original levers that can feed the endogenous accompaniment devices. Their combination with the Cronbach test provides a reduced and adapted grid of the Gasse model, auguring a differentiated accompaniment of future MRE and Local entrepreneurs.

This thesis is devoted to the development of new models for a recently-implemented FACTS (flexible alternating current transmission system) device, the unified power flow controller (UPFC), and the control coordination of power systems with FACTS devices in steady-state operating mode. The key objectives of the research reported in the thesis are, through online control coordination based on the models of power systems having FACTS devices, those of maximising the network operational benefit and restoring system static security following a disturbance or contingency. Based on the novel concept of interpreting the updated voltage solutions at each iteration in the Newton-Raphson (NR) power-flow analysis as dynamic variables, the thesis first develops a procedure for representing the unified power flow controllers (UPFCs) in the steady-state evaluation. Both the shunt converter and series converter control systems of a UPFC are modeled in their dynamical form with the discrete time variable replaced by the NR iterative step in the power-flow analysis. The key advantage of the model developed is that of facilitating the process of UPFC constraint resolution during the NR solution sequence. Any relative priority in control functions pre-set in the UPFC controllers is automatically represented in the power-flow formulation. Although the developed UPFC model based on the dynamic simulation of series and shunt converter controllers is flexible and general, the number of NR iterations required for convergence can be large. Therefore, the model is suitable mainly for power system planning and design studies. For online control coordination, the thesis develops the second UPFC model based on nodal voltages. The model retains all of the flexibility and generality of the dynamic simulation-based approach while the number of iterations required for solution convergence is independent of the UPFC controller dynamic responses. Drawing on the constrained optimisation based on Newton’s method together with the new UPFC model expressed in terms of nodal voltages, a systematic and general method for determining optimal reference inputs to UPFCs in steady-state operation is developed. The method is directly applicable to UPFCs operation with a high-level line optimisation control (LOC) for maximising the network operational benefit. By using a new continuation technique with adaptive parameter, the algorithm for solving the constrained optimisation problem extends substantially the region of convergence achieved with the conventional Newton’s method. Having established the foundation provided by the comprehensive models developed for representing power systems with FACTS devices including the UPFC, the research, in the second part, focuses on real-time control coordination of power system controllers, with the main purpose of restoring power system static security following a disturbance or contingency. At present, as the cost of phasor measurement units (PMUs) and wide-area communication network is on the decrease, the research proposes and develops a new secondary voltage control where voltages at all of the load nodes are directly controlled, using measured voltages.

This thesis is devoted to the development of new approaches for control coordination of PSSs (power system stabilisers) and FACTS (flexible alternating current transmission system) devices for achieving and enhancing small-disturbance stability in multi-machine power systems. The key objectives of the research reported in the thesis are, through optimal control coordination of PSSs and/or FACTS devices, those of maintaining satisfactory power oscillation damping and secure system operation when the power system is subject to persisting disturbances in the form of load demand fluctuations and switching control. Although occurring less frequently, fault disturbances are also considered in the assessment of the control coordination performance. Based on the constrained optimisation method in which the eigenvalue-based objective function is minimised to identify the optimal parameters of power system damping controllers, the thesis first develops a procedure for designing the control coordination of PSSs and FACTS devices controllers. The eigenvalue-eigenvector equations associated with the selected electromechanical modes form a set of equality constraints in the optimisation. The key advance of the procedure is that there is no need for any special software system for eigenvalue calculations, and the use of sparse Jacobian matrix for forming the eigenvalue-eigenvector equations leads to the sparsity formulation which is essential for large power systems. Inequality constraints include those for imposing bounds on the controller parameters. Constraints which guarantee that the modes are distinct ones are derived and incorporated in the control coordination formulation, using the property that eigenvectors associated with distinct modes are linearly independent. The robustness of the controllers is achieved very directly through extending the sets of equality constraints and inequality constraints in relation to selected eigenvalues and eigenvectors associated with the state matrices of power systems with loading conditions and/or network configurations different from that of the base case. On recognising that the fixed-parameter controllers, even when designed with optimal control coordination, have an inherent limitation which precludes optimal system damping for each and every possible system operating condition, the second part of ii the research has a focus on adaptive control techniques and their applications to power system controllers. In this context, the thesis reports the development of a new design procedure for online control coordination which leads to adaptive PSSs and/or supplementary damping controllers (SDCs) of FACTS devices for enhancing the stability of the electromechanical modes in a multi-machine power system. The controller parameters are adaptive to the changes in system operating condition and/or configuration. Central to the design is the use of a neural network synthesised to give in its output layer the optimal controller parameters adaptive to system operating condition and configuration. A novel feature of the neural adaptive controller is that of representing the system configuration by a reduced nodal impedance matrix which is input to the neural network.

L'augmentation des transits de puissance dans les réseaux d'énergie électrique ainsi que les contraintes environnementales ont conduit à l'introduction des dispositifs FACTS (Flexible AC Transmission Systems) pour l'amélioration de l'exploitation des réseaux. Ces dispositifs sont capables de remplir diverses fonctions comme le maintien de la tension, le contrôle des flux de puissance, l'amélioration de la stabilité du réseau, l'augmentation de la puissance transmissible maximale, etc. De plus, grâce à leur temps de réponse rapide, ils sont apparus comme des outils efficaces pour l'amortissement des oscillations électromécaniques très basses fréquences. Cette nouvelle fonction des dispositifs FACTS est d'autant plus importante que les réseaux mondiaux sont de plus en plus interconnectés, donc sensibles aux oscillations électromécaniques inter-régions. Cependant, le recours à de nombreux dispositifs FACTS dans un réseau nécessite d'étudier attentivement les éventuels problèmes d'interaction de régulation des dispositifs FACTS entre eux, mais aussi avec les autres éléments du réseau. Le travail réalisé dans le cadre de cette thèse traite des phénomènes dynamiques liés aux problèmes d'interaction résultant de l'insertion d'un ou plusieurs dispositifs FACTS shunt. Des indices de sensibilité et d'influence sont définis depuis les concepts de commandabilité et d'observabilité respectivement afin de prévoir l'importance des phénomènes d'interaction liés à l'insertion d'un dispositif FACTS et d'identifier les zones d'influence du dispositif FACTS. Ces indices sont appliqués à un réseau test 2 zones 4 machines et à un réseau réel simplifié 29 machines. Deux méthodes de coordination (méthode de type " minimax " et méthode linéaire quadratique décentralisée) sont mises en œuvre pour coordonner les dispositifs FACTS entre eux et avec les stabilisateurs de puissance (PSS - Power System Stabilizer) dans le réseau test 2 zones 4 machines.

ABB is a global leader in Power and Automation Technologies. This Theses Work has been carried out at ABB FACTS R&D Department in Västerås. ABB FACTS intend to develop new Product Platforms that is partly accomplished with new methods and processes. This Master Thesis concerns the development of a generic Review and Approval Process for these R&D Projects. The development of the generic Review and Approval process is mostly founded on several interviews of employees at ABB FACTS. The respondents are employees from several departments with different amount of experiences and background. In addition to the interviews a Literature Study focused on Roles and Responsibilities, Document Management and R&D Processes was performed. Information in connection to the problem statements concerning Responsibility- and Project Roles in R&D projects and Review and Approval Execution was collected and analyzed during the project. Information regarding how to demonstrate Roles and Responsibilities in relation to the project participants was also considered. The result of this project consists of a Responsibility Chart where all R&D Project related Document Types are listed in relation to the defined Project Roles. This Responsibility Chart also display what responsibility every Project Role has regarding review and approval related to the Document Types. Besides the Responsibility Chart also other objects were developed, such as a Review Record, a Process Description and a User Guide. The above mentioned results are developed in close cooperation with several R&D Project Managers. Furthermore the expectations are that the developed result will be taken in usage and thereby continuously be revised and improved in order to suit the organization to maximum extent.

Recently, the widespread use of power system controllers, such as PSS and FACTS controllers, has led to the analysis of their effect on the overall stability of power systems. Many studies have been conducted to allocate FACTS controllers so that they achieve optimal power flow conditions in the context of Optimal Power Flow (OPF) analysis. However, these studies usually do not examine the effect of these controllers on the voltage and angle stability of the entire system, considering that the types of these controllers and their control signals, such as reactive power, current, or voltage, have significant effect on the entire system stability. <br /><br /> Due to the recent transition from government controlled to deregulated electricity markets, the relationship between power system controllers and electricity markets has added a new dimension, as the effect of these controllers on the overall power system stability has to be seen from an economic point of view. Studying the effect of adding and tuning these controllers on the pricing of electricity within the context of electricity markets is a significant and novel research area. Specifically, the link among stability, FACTS controllers and electricity pricing should be appropriately studied and modelled. <br /><br /> Consequently, in this thesis, the focus is on proposing and describing of a novel OPF technique which includes a new stability constraint. This technique is compared with respect to existent OPF techniques, demonstrating that it provides an appropriate modelling of system controllers, and thus a better understanding of their effects on system stability and energy pricing. The proposed OPF technique offers a new methodology for pricing the dynamic services provided by the system's controllers. Moreover, the new OPF technique can be used to develop a novel tuning methodology for PSS and FACTS controllers to optimize power dispatch and price levels, as guaranteeing an adequate level of system security. All tests and comparisons are illustrated using 3-bus and 14-bus benchmark systems.

Recently, the widespread use of power system controllers, such as PSS and FACTS controllers, has led to the analysis of their effect on the overall stability of power systems. Many studies have been conducted to allocate FACTS controllers so that they achieve optimal power flow conditions in the context of Optimal Power Flow (OPF) analysis. However, these studies usually do not examine the effect of these controllers on the voltage and angle stability of the entire system, considering that the types of these controllers and their control signals, such as reactive power, current, or voltage, have significant effect on the entire system stability. <br /><br /> Due to the recent transition from government controlled to deregulated electricity markets, the relationship between power system controllers and electricity markets has added a new dimension, as the effect of these controllers on the overall power system stability has to be seen from an economic point of view. Studying the effect of adding and tuning these controllers on the pricing of electricity within the context of electricity markets is a significant and novel research area. Specifically, the link among stability, FACTS controllers and electricity pricing should be appropriately studied and modelled. <br /><br /> Consequently, in this thesis, the focus is on proposing and describing of a novel OPF technique which includes a new stability constraint. This technique is compared with respect to existent OPF techniques, demonstrating that it provides an appropriate modelling of system controllers, and thus a better understanding of their effects on system stability and energy pricing. The proposed OPF technique offers a new methodology for pricing the dynamic services provided by the system's controllers. Moreover, the new OPF technique can be used to develop a novel tuning methodology for PSS and FACTS controllers to optimize power dispatch and price levels, as guaranteeing an adequate level of system security. All tests and comparisons are illustrated using 3-bus and 14-bus benchmark systems.

Syftet med studien är att belysa hur chefer och personalansvariga inom olika organisationer upplever svåra samtal i arbetsrelaterade situationer. Vi önskar komplettera tidigare forskning inom området svåra samtal med en mer socialpsykologisk inriktning som analysverktyg. Med hjälp av kvalitativ metod i form av sju semistrukturerade intervjuer når vi förståelse för hur chefer och personalansvariga upplever svåra samtal i arbetsrelaterade situationer. Vi besvarar följande frågor i studien: Hur upplever chefer och personalansvariga inom olika organisationer svåra samtal? Vilka faktorer kan bidra till att chefer och personalansvariga anser att samtal är svåra eller inte? De slutsatser som kan dras utifrån denna studie är att de intervjuade cheferna och personalansvariga anser att det finns svåra samtal på arbetsplatsen. Sammanfattningsvis uppleverintervjupersonerna att samtal som inkräktar på den personliga sfären är svårast. Exempelvis missbruksproblematik, dålig hygien och sjukdom är svåra samtalsämnen. Samtliga chefer och personalansvariga betonar vikten av förberedelser innan de påbörjar samtalen. Sammanfattningsvis ser intervjupersonerna arbetet mer som en yrkesroll och med hjälp av fakta känner de sig säkrare i delgivningen av svåra besked. Empati anses betydande för samtalets utgång. Vardagliga samtalsämnen som upplevs lätta kan visa sig svåra, eftersom de blir oförberedda inför situationen, vilket kan skapa svårigheter. / The study aims to shed light on how managers and human resources managers in different organizations experiencing difficult conversations in work-related situations. We wish to complement previous research in the area difficult conversation with a wider social psychological approach as analysis tools. Using qualitative methods in form of seven semi-structured interviews, we reach an understanding of how managers and human resource managers are experiencing difficult conversations in work-related situations. The questions we answer in this study are: How do managers and human resources managers in different organizations experience difficult conversations? Which aspects of the conversation contribute the experience of a conversation as difficult or not? The conclusions to be drawn from this study are that the interviewed managers and human resource managers believe that difficult conversations exist at work. In conclusion, the respondents perceive the conversations as intrusive of the personal sphere are the most difficult. For example, substance abuse problems, poor hygiene and diseases are difficult topics. All managers and human resource managers stress the importance of preparation before conversations. In summary, the respondents work more as a professional role and using the facts, then they feel safer in the service of non positive news. Empathy is considered important for the conversations. Everyday topics that are perceived ease, may prove difficult because they are unprepared for the situation, which can create difficulties.