The Brazilian Emergency Medical System (SAMU), performs an important role for its healthcare system, providing emergency services to attend the population’s need for first aid services, victims transports or patients transfers between hospitals. To assure a successful service for victims in need, it is essential that ambulances may reach incident sites’ quickly. One of several factors that can affect the ambulances’ agility to reach victims refers to its locations, vehicles shall be placed in a way that enables them to cover its demands properly. Therefore, SAMU managers must be aware with the location of ambulance bases and the number of vehicles as signed to each one,inorder to afford effective coverage for its requests. To support the decision making process in this field, Operations Research (OR) offers a set of methods and tools that can indicate the ideal locations to install bases and determine the best way to allocate ambulances. Hence, this work aims to apply the Facility Location Problem in the SAMU of Belo Horizonte city, state of Minas Gerais. The objective is to contribute to the development of optimization models that divide the day into multi-periods to handle the problem of bases locations, and ambulances allocation/realocation, in order to maximize the coverage of demands within satisfactory response times. This is a case study with a quantitative and applied approach, with an exploratory objective that draws on two OR’s techniques, Simulation and Mathematical Programming. Based on literature references, two models are presented. The first formulation has a deterministic approach while the second uses a stochastic approach. In addition, a multiobjective analysis is applied to the problem, aimming to maximize the coverage while the number of bases to be installed is minimized. Lastly, a simulator is used, allowing a comparison of the proposed settings by both optimization models and also a comparison of them with the current operating framework. Results from optimization suggest that the installation of new bases and/or the deferral for ambulances to move among bases may increase the coverage level of the system about to 30% (deterministic formulation) and about to 24,6% (stochastic formulation). Through simulation it is possible to infer that the stochastic model without realocation generates the best coverage results. It is also observed that, given the current base locations, the realocation proposal suggested by the stochastic formulation is the one that provides the best results.

The profession of traffic agents emerged in 1997, from the Brazilian Traffic Code that determined the municipalization of traffic inspection, engineering and education through administrative decentralization in the provision of these services. Since then, the work of these agents has been standardized in different documents, such as the resolutions of the National Traffic Council and municipal legislation. However, such norms are not able to anticipate what is done with work in the real life space, which needs to be mobilized to carry out the activity, especially in contexts of precarious working conditions in the public service. This demands that agents mobilize knowledge, values, uses of themselves, to carry out the activity. Although some aspects of this activity have been studied under microscopic perspectives, notably in the fields of psychodynamics, activity ergonomics and psychosociology of work around phenomena such as premature aging, experiences of pleasure and suffering, absenteeism and exposure to violence. However, this study proposes to analyze in depth the most invisible aspects of the agents' activity from an ergological perspective, which “constitutes a project to better know and, above all, to better intervene on work situations, to transform them”. The objective of this dissertation was to look at the work activity of traffic agents in the municipality of Betim, mainly to understand how they use themselves, create and mobilize knowledge, values and experiences to carry out the work activity in the growing context of precarious public services. As a method, it was a qualitative, descriptive study, which used, as an instrument of data production, the technique of simple and cross-confrontation, the sample was composed of 12 agents divided into 6 pairs in 2 work shifts. As main results, it was possible to observe how the confrontation between the workers and their image at work allowed them to relive the experiences of their choices and the way to mobilize their knowledge, their values, their understanding of the context and, above all, and what it is required of your body at work. The confrontations showed that transit agents have a particular understanding of their role in articulating interests between the poles of values with and without dimension, about the enigmatic and diverse character of the activity itself, in addition to revealing how, in the face of scarcity contexts of resources and cultural problems of traffic in the municipality, workers act, making use of themselves, mobilizing what they can to meet the demand of the population and their own satisfaction with their work. The results also showed that the agents' activity emerges in the debate of norms between the different prescriptions that constrain them and the understanding of these workers about their own way of doing, in addition to pointing out contributions of the ergological approach to the decision processes on the organization of work in public services.

This study has as general objective implementing the Process Maturity Management Tool Iris, which articulates the models 8 OMEGA ORCA and Balanced Scorecard (BSC), to support top management decision-making at Federal Center of Technological Education of Minas Gerais (CEFET-MG) in relation to the Institution’s strategic objectives and the search for the continuous improvement of its processes. For that reason, the nature of the methodological objectives adopted was exploratory and insider action research, under the Organization Development modality was used as the research strategy. Data was generated through bibliographical research, documentary research, executive meetings with top management representative and structured questionnaire. This structured electronic questionnaire was answered by 26 managers and facilitators designated by the Institution for Business Process Management. The results indicated that seven out of nine organizational elements assessed are in the initial stage of maturity (levels 1 to 3). The elements Commitment of Top Management and Organization and Structure, reached intermediate level 4. The overall maturity level of the Institution is 3, classified as Design, according to the framework classification. New stages for each element were traced for a timeframe of five years. The goals set intend to level all organizational elements and pillars in the intermediate stages at the end of the next strategic cycle of the Institucional Development Plan (IDP). After the gap analysis, the framework pointed to directives for action in relation to the pillars of strategy, people, processes and technology. Directives can contribute to the definition of institutional strategic objectives, that will be developed by the IDP working team. The use of the Balanced Scorecard (BSC) for the long-term strategic management of the organization's critical processes – the second part of the Iris tool – was recommended for the development of the Institutional Development Plan (IDP 2021-2025). The study validated the Iris tool as a viable alternative for other educational institutions and public administration agencies to assess their processes’ maturity levels and to monitor their performance towards continuous improvement from reliable action plans.

The process of convergence to international accounting standards applied to the public sector provided the emergence of Brazilian accounting standards directed to the public sphere, one of which is the object of this study, NBC T 16.11. This standard deals with the implementation and use of the Public Sector Cost Information System (SICSP) and highlights the need for cost information to promote transparency, support the decision-making process and perform an adequate accountability. Given the importance of NBC T 16.11, the present research had as general objective to analyze the perception of public controllers and accountants about the implementation and use of SICSP in the municipal halls of Minas Gerais. In order to do so, the following specific objectives were established: 1) to characterize the public controllers and accountants; 2) to identify the profile of the municipalities regarding the implementation and use of the SICSP; 3) to investigate the perception of controllers and public accountants regarding the usefulness of SICSP in the decision-making process; 4) to analyze whether there are relationships between the size of the municipality and the degree of difficulty in implementing/using the SICSP considering material and human resources; and the size of the municipality and the degree of usefulness of the SICSP in the decision-making process. To achieve the objectives of this research, a questionnaire was sent to each of the 853 municipalities in Minas Gerais, and 106 questionnaires were answered. The research methodology used was based on a quantitative approach with the use of descriptive statistics, the t-Student Test and pearson's correlation for data treatment. The results showed that no municipality has fully implemented the SICSP yet. The descriptive analysis showed that the degree of difficulty in implementing/using the SICSP regarding the number and qualification of the staff was significant. Most public controllers and accountants realize the importance of SICSP utility in the decision-making process, recognizing it as very useful or useful. This demonstrates that there is an awareness that the SICSP is relevant in the decision-making process by professionals, which may favor the implementation in the future. It was verified the existence of relationship between the size of the municipality and the degree of usefulness of cost information as an instrument of decision-making for economic choices. In other words, larger municipalities understand that the SICSP is very useful in this process and smaller municipalities tend to recognize a lower degree of utility. It was found that the municipalities are not structured to comply with what NBC T 16.11 determines and that there are no penalties for non-compliance. As future research, it is suggested to study other variables (such as indicators of transparency and effectiveness of municipal management) and their relationship with the SICSP. In addition, it is recommended to conduct a study through interviews to verify if there is resistance of people; discontinuity due to political succession through electoral processes and barriers related to the turnover of controllers and public accountants who are often not effective civil servants. 

The objective of this research is to analyze how the relationship between decision-making processes and the adoption of managerial innovations occurs in a Brazilian luxury hotel. The investigation was based on the concepts and theoretical perspectives raised on the following themes: innovation, managerial innovation, innovation in hospitality, decision-making process and decision-making process in innovations, seeking an articulation between these themes, respecting the specificities. The methodological path was designed based on a qualitative approach, with a descriptive objective, using the single case study method. We investigated a resort located on the coast of the state of Bahia, Brazil, in view of the relevance and recognition of this hotel on the national and international scene, in addition to the accessibility of the researcher to the organization. For data collection, documentary analysis and eight semi-structured interviews were conducted with the main hotel managers and decision makers, in a perspective of data triangulation. The relationship between managerial innovation and the decision-making process was the basis for the proposed analysis model. In this model, the innovation adoption process was analyzed, identifying its stages and the influencing factors that impact the adoption or rejection decisions. In this way, it is concluded that the innovation adoption process is strongly influenced by internal and / or external agents that aim to seek legitimacy and reputation. It was also possible to observe the influence of the COVID-19 pandemic crisis on the managerial innovation process in the hotel, being a driving factor to accelerate the implementation of such innovations as a possible solution to the crisis experienced by the hotel. Complementing the model, it was identified as a possible barrier for managerial innovations to emerge from the tactical-operational level the training and training of people in terms of management and problem solving, in addition to communication between managers and staff, centralization of power and team autonomy operational. With the results and discussions of this research it was possible to obtain a greater understanding of decision making for the adoption of innovation in the context of luxury hotels, thus contributing to the state of the art of scientific literature and to generate a positive impact on services and organizational processes.

This research aims to understand the role of women's work in drug trafficking. With the purpose of construe lore from the dialogue between social and subjective knowledge as well as understanding the relationships between work and subjectivity, psychosociology was used as a theoretical contribution and the trajectory of working life as a methodological resource. The interviews were conducted with two women indicated by the “Grupo de Amigos e Familiares de Pessoas em Privação de Liberdade” [name of the non-profit organization that aims to mobilize and organize friends and family of people deprived of liberty in order to guarantee their rights]. Considering that the commercialization of illicit psychotropic substances occurs as a continuous activity and that involves quality control, price regulation, charge and payment, salary, labor relations, hierarchical network and market conquest – resembling a formal retail trade, it is conceived that the ex-drug dealers interviewed were responsible for managing a complex distribution chain, acting as decision makers in search of opportunities to maximize profits and reduce risks – since both occupied a hierarchical position that went beyond the operational in that organization. Therefore, this work seeks to understand management and decision-making processes in an illicit organization as well as raising questions about the conditions and processes of meaning of female labor in drug trafficking. Through the reports it was possible to show the agility and adaptability of the management of this activity, factors that are of paramount importance to the functioning of an illicit organization because there are ever new methods to combat their activities. Furthermore, considering that drug trafficking operates as a neoliberal market, the study showed how autonomy in decision-making is no longer a tool for the emancipation of the subject but an instrument for deterioration of labor. Lastly, the reports showed that women submit themselves more intensely to factors that put them vulnerable to mental illness in order to obtain validation of the environment and self-worth through the value of their work.

The Schools of Apprentices and Craftsmen have been a manifestation of public policy since the first decade of the last century. The State was looking for an application for Education that would train young people for work. The transformation of these schools into the Federal Professional Education Network did not erase their vocation to prepare for the world of work, through the culture of innovation and entrepreneurship, combined with the triad Teaching, Research and Extension. In order to promote the fulfillment of the Network's objectives and purposes, stipulated in its own Law, the Ministry of Education's Secretariat for Professional Education implemented a series of actions. This dissertation seeks to verify whether the innovation actions promoted by SETEC were effective in inducing the Innovation Poles of the Federal Professional Education Network. Based on a theoretical framework that seeks to relate decision-making processes and innovation, it was developed based on a qualitative methodological approach, via documentary research, involving strategic actions carried out from 2013 to 2020 for the 42 institutions that make up this group. At the end of the research, we will verify the historical relationship between the actions originating from the Ministry of Education and the accreditation of the Innovation Poles. Thus, we will be able to analyze the Decision-Making Process under two different biases: Public Policies for Direct Administration and Innovation Management for the respective federal schools.

This study proposes to understand on the activity of Justice Officials at Minas Gerais state, in the context of Psychodynamic of Work, evaluating their experiences of pleasure and suffering and their impacts on decision-making processes. It emphasizes that the work carried out by the Officials is characterized by a context with a complex nature of situations and emotions that they have to deal with daily, with no support from the district administration or the TJMG. Theoretical support for this study is: The Psychodynamics Theory of Work, based on the studies of Dejours (1994) and Mendes (2007), which assesses man's resistance to the reality of symbolic, social, political and economic domination present in work environments; and Bounded Rationality Theory, which study the limited nature of the human in face of decision-making processes. This work, along its development, seeks to guide the following research question: How are the experiences of pleasure and suffering by Justice Official in judicial district in Minas Gerais, and how this influence their decision-making? The search for these answers was guided by qualitative and quantitative studies, through the application of ITRA and socio-demographic surveys, in addition to individual interviews with some employees, with the purpose of clarifying and qualifying the quantitative analyzes. As a result, a negative evaluation was observed regarding dimensions studied, showing an illness process on employees, and which has influenced decision making and consequently the quality of the Judiciary service. Results obtained from the sociodemographic survey, initially served to contextualize the study, and later were treated together with results obtained from all ITRA scales. Complementing these analyses, categories and subcategories were defined, based on the major groups of ITRA, as well as sense cores. Analyzes of each factor of ITRA scales were exemplified with excerpts from the testimonies obtained through individual interviews, supporting quantitative results. The study showed a negative assessment regarding the various dimensions investigated, with all ITRA scales rated as critical or serious, showing a process of illness among professionals that has influenced decision-making and, consequently, the provision of the service in the Judiciary. Given this scenario, it is recommended a serious reflection by district administration or even the TJMG, in order to develop mechanisms to improve the health and quality of life of Justice Officials.

This work aimed to investigate how the interactions between the different agents that operate in the tourist activity of Pirapora / MG affect the maturity of this productive cluster and contribute to the local development through the decision to collaborate. Tourism is an activity that seeks to meet the demand of people who seek happiness, rest and leisure. In Pirapora / MG, the formation of a Local Productive Arrangement (APL) seems to be the simplest way to create an organized offer aimed at a complete tourism product, previously designed for a basic market and, consequently, increase employment and income for its population. The research approach was qualitative descriptive and analytical, through participatory research, documentary and field research as instruments of data collection. In relation to the unit of analysis it has tourist characteristics, since the Ministry of Tourism of Brazil in its most recent classification considered it integral of the new map of the Brazilian tourism. The results showed that: a) the city has potential tourism products that are not yet formatted for supply; b) entities related to tourism participate and are involved in part with planning and acting in regional tourism; c) the interaction between them affects the development of tourism, however, as it has been conducted, it is not enough to leverage it because it needs more organization and carrying out joint activities within a short, medium and long term planning; d) the city has relevant deficiencies in the sector such as low community involvement and lack of preparedness of the population to receive the tourist; and e) the environmental problems related to the volume of water and fish have directly affected the natural attractions of the region and has served as a justification by the population for the lack of use of tourism potential. Thus, in the tourist cluster of Pirapora / MG, the interactions resulting from the decision to cooperate are directly related to their development and maturity and can lead to an articulated process capable of developing agglomeration in the short term.

The purpose of this study was to "understand the influence of the sports career on the performance of the managerial function from the perception of former athletes." The relevance of this study is to insert a discussion still little explored in the Brazilian literature, analyzing the athlete's career transition and the peculiarities of the profession. To make the analysis proposed in this study feasible, it was necessary to understand career, career transition and managerial role. In order to reach the goal, 6 former athletes were interviewed who occupied the position of manager during the period in which the research was carried out. Only those for whom the sports career was also a professional career were selected. Based on the theoretical reference, the professionals who performed some sequential functions directed to the organization (planning, implementation, operation and evaluation) and directed to the participants (stimulation, coordination and control) were considered as managers. By conducting qualitative and descriptive research, the interviews were done semi-structured and were treated through the content analysis proposed by Bardin (1977). The analysis of the interviews was divided into 3 categories - sports career, manager career and career relationship - and 8 codes. It was felt that the burden of competitions and training, the development of teamwork, leadership, knowledge of oneself limits were decisive for the construction of the current career and influence the understanding of what is the managerial function. It is understood that the greatest contribution of this study resides in the understanding that, after the transition of career, the ex-athlete who assumes a managerial function uses resources of the previous career that allow to overcome the challenges of the management. In addition, it was possible to identify that the experience in the sport is a differential for the managers that act directly or indirectly in this area.

The relationship between stock liquidity and its return is a theme widely explored in the literature since the seminal work of Amihud and Mendelson (1986). Among the studies developed with this theme, we highlight the divergence of results among the works developed in the context of emerging markets. Jun, Marathe and Shawky (2003) and Correia, Amaral and Bressan (2008) are examples of authors who find a positive relationship between liquidity and returns, while Machado and Medeiros (2011) and Amihud et al. (2015) find a negative association between these variables in the context of emerging markets. Thus, this dissertation had as general objective to verify if the stock liquidity is a systematic risk factor priced in the capital markets of the emerging countries of Latin America. The initial sample of the study consisted of all stocks traded between June 1, 1999 and June 30, 2017 in the markets of the Latin American countries that were part of the Emerging Markets Index of Morgan Stanley Capital International in August 2018. To measure liquidity were considered two alternative proxies, namely: the Adjusted Illiquidity of Kang and Zhang (2014) and the standardized turnover index proposed by Liu (2006). After calculating these proxies, we tested the inclusion of a liquidity factor for each measure of liquidity in the three-, four-, and five-factor models. By using the Gibbons, Ross and Shanken (1989) test to evaluate the model results, it was observed that, in general, the models that had a liquidity factor presented a better predictive power, and the models with the constructed factor from the standardized turnover presented a greater power of explanation in comparison to the models with the addition of a factor for the liquidity based on adjusted iliquidity. The results of these models were robust in relation to the January effect and, when the sample was considered segmented in two equal periods, it was evidenced that liquidity became a more significant factor in the second half of the time window. When estimating the cross-section regressions, or models of the second step, the results pointed out that no model was able to explain the average return excess of the LHS portfolios. In addition, the highest coefficient of determination obtained for these models was related to the five-factor model with the addition of the factor constructed from the Adjusted Illiquidity.

The project manager (PM) is the figure within the organization that dialogues between the higher hierarchical levels, exerting influence in the decision-making process. It is therefore crucial to understand how these professionals make decisions and whether there is a decision-making style they are most inclined to. The study was based on the Talent Triangle (TT), developed by Project Management Institute (PMI), which defines three competencies dimensions (technical knowledge, leadership and strategic and business management) required to respond to the complexities of the projects and the market. These competencies have a close relationship with decision-making. Thus, this study aims to investigate the relationship between the decision-making style of engineering and IT managers and their preferences regarding the dimensions of the PMI Talent Triangle. To achieve the goal of the research, it was adopted the Dual Process Theory in its version modified by Regret Theory, here called TPD-m, which assumes that each individual can have a more prominent decision-making style among three possibilities: analytical, intuitive and emotional. Seeking for research resources that could dialogue with the TPD-m theory, two tools with psychology bases were adopted: 1) the DMI (Decision Making Inventory) psychometric test that aimed to investigate PM decision styles and 2) Q-Methodology, which aimed, among other things, to capture subjective aspects by suggesting to the participants to establish the most priority items of the TT dimensions The results confirm the preponderance of the analytical style among the PMs investigated and also point to a more pronounced inclination to the strategic vertex of the TT. This discussion allowed to emphasize a subject sometimes relegated to the background, which is the decision-making as a cognitive process and to deepen the studies of competence in project management, establishing a bridge between market concepts and studies in the academic environment.

The purpose of this dissertation is to understand, through an ergological point of view, the certification process of school principals of Minas Gerais state. Beginning in 2006, the occupational certification process of state school principals in Minas Gerais aims to identify whether the professional has the necessary skills to assume a specific position/function and meets the technical requirements, with their respective responsibilities and activities. The choice for an ergological approach in the present research was made mainly to give centrality to voice of the school principals so that they can expose their vision about the certification process. Considered a démarche, a path to be followed, the ergology proposes to better understand and intervene in work situations in order to transform them, bringing the worker to the center of attention, focusing on built knowledge and seeking to understand the debates they experienced in the execution of their work. In view of the objective of the work, semi-structured interviews were conducted with school principals of Belo Horizonte’s metropolitan area, in addition to having as object of study occupational certification as its object of study this research addresses the organization of Brazilian education, the history and the processes of choosing the figure of the school principals, as well as the literature that aims to identify the competencies required for the Brazilian school administration. It can be concluded that the implementation of the occupational certification studied was carried out in tow of a national movement that aimed to improve the results of education in Brazil, which instituted a systematic of metrics and controls to evaluate the evolution of teaching quality in Brazil. parents. This movement is a clear example of the injection of market values, of individual values that can be quantified on the political pole, of unquantifiable values, of the common good. Having verified the relationship between the competences / qualities of the school manager to this improvement, occupational certification has become the quality seal of the professional who holds this position, which validates the efforts of the state government to improve the quality of education. However, through the interview of the school principals the certification cannot encompass the reality of their work or prepare the candidates for position.

Currently, the Brazilian electricity matrix is predominantly hydroelectric, with a share of over 63%. This implies huge climate dependence, as well as thermal power plant activation at times of rationing, increasing the cost of the tariff. On the other hand, it is observed that the source of photovoltaic solar distributed power generation, which Brazil has abundant resources, such as territorial space and good level of irradiation, still has incipient participation in the Brazilian electric matrix, around 0.14%, according to the National Energy Balance (2018). Therefore, this research sought to structure a financial viability model, aiming to support decision making in investments of solar photovoltaic distributed power generation, as well to provide an analysis of the impacts for the energy distributor and for the State (Federal and State). For this purpose, this research was developed through a quantitative investigation, which included a sample of 1,973,766 UC's consumer units, in 773 municipalities of Minas Gerais, in concession area of Cemig Distribuição S.A., from 151kWh to 500kWh consumption range. The sample period used was 2018. The feasibility analysis was performed considering three different perspectives: consumer, energy distributor and the State. The analysis was supported by the following financial indicators: Net Present Value (NPV), Internal Rate of Return (IRR) and Payback, along with the Monte Carlos simulation for the following variables: equipment and installation price, inflation and minimum attractiveness rate. In addition, some scenarios were performed considering variations in the kw price. In conclusion, from the consumer perspective, for the 25-year time series, which was the one adopted for cash flow, all UCs were financially viable. The lowest PayBack and the highest IRR, per mesoregion, were respectively 6.36 years and 22.19%. When applying the SMC, there was a slight positive change in results, around 3% compared to the base scenario. The analysis from the perspective of the distributor and the State, in addition to the SMC already performed, proposed scenarios with reduction and increase of the tariff value, which allowed to verify reduction of revenue loss and collection, as well as a performance decrease of the financial indicators. This enables the discussion of trade-off between tariff reduction for customer retention in the current system versus tariff increase or maintenance and the possibility of customer migration to the photovoltaic solar power generation system.

Discussions about the concept of space in the market dynamics, although still incipient, have been increasingly recurrent. Until recent times, it was common for researchers in the field of consumer culture to focus their studies on consumers and producers, neglecting the fact that other agents could also play a significant role in changing markets. Current research, however, has positioned differently by highlighting previously unnoticed agents, such as space. If initially it emerged as a mere scenario of consumer relations, in recent studies space is approached as a central focus, assuming a relevant role as a transforming agent of the markets. Accompanying this understanding, the objective of this study was therefore to understand how the use of public spaces affects the behavior of consumers and, consequently, changes the market. To reach it, was used the context of the street carnival of Belo Horizonte, a collective movement that occupies the public spaces of the city in order to question the uses commonly associated with them. Based on the concept of social movements from an institutional perspective, a longitudinal investigation was carried out by collecting data from various sources, such as newspaper articles, Internet, public documents, semi-structured interviews and participant observation. As a result, three positions assumed by consumers directly influenced by the use associated with public spaces were identified: the organization of a social movement, the projection of institutional entrepreneurs and the promotion of institutional works. This research contributes to the understanding that socio-cultural structures influence the process of market evolution and should be considered in the decision-making of companies and governmental institutions.

This work aims to propose models using machine learning techniques, specifically using artificial neural networks (ANN) and support vector machine (SVM), to predict financial assets which have potential to achieve specifics targets and then compose portfolios using the Black-Litterman model (BL). Regarding the the specifical aims, the propose is to build a model using ANN and another one using SVM to classifie financial assets which have potential to achieve specific targets, and then, optimize portfolios using BL model, taking as view parametrer the ANN and SVM predictions, and, finally, compare the portfolios with the baselines (Ibovespa index and a portfolio built using the Markowitz’s model). The sample was composed by assets in Ibovespa index, from January 2006 to July 2017, considering daily data. The ANN and SVM models operated as classifiers, where was daily generated achievment indicators from specificals targets. This predictions was coupled in BL model using the targets as a view parametre and the precision measure used to represent the confidence regardind this view. To compare the performance of the proposed model five other models were configured: (i) a model using signals from a randomic process coupled in BL model, (ii) a model using signals from the classifiers, but without optimization, (iii) a model using signals from the classifiers coupled in MV model, (iv) the MV model in simple application, and (v) a porfolio using a buy-and-hold strategy based in Ibovespa index. The results indicated higher performance from the classifier based on SVM when compared with a naive approach, superiority in terms of cardinality, operation volume and return for SVM+BL strategy, in a total period and by bienium analysis. This results reinforce the potential of using the soft computing techiniques in a portfolio selection process, providing insigths for the decision maker to elaborate more assertive strategies, performing a more accuracity operration and achieving better results. The contributions of this work include the proposition from a model to support the decision maker in a process of investment decision, the development of a classifier which has statitical superior assertivity if compared to a naive approach, the use of the minimun variance portfolio to estimate the market equilibrium distribution, and the coupled of the predictions from machine learning techiniques with the BL model, using the precision measure as parametre.

Currently, it is noted that the business location scenario is experiencing changes. While for some industries location is defined by the proximity of its feedstock source, by the market, or by economies of agglomeration with significant strategic impact, the technology-based companies, the emerging businesses and here named as startups, suffer from less determinism and can hypothetically locate themselves anywhere they have access to the information and communication technologies. However, there is a trend towards clustering and the formation of startups ecosystems. To study this phenomenon, was made the option to understand the decision-making process of the location of these companies. The objective of the research was to investigate the rationality and the circumstances of the location decision taken by the entrepreneurs of technology-based companies not only for the implementation, but also for the continuity of the business. The limited rationality of the decision-maker, who is immersed in a set of institutions and under a network of connections with other agents, which at the same time restricts and potentiates their actions, has been accepted. The research was developed through the exploratory-descriptive case study of the San Pedro Valley Community, in the region of Belo Horizonte, Minas Gerais - selected for its prominence among Brazilian technological environments. Ontologically, reality was assumed to be the one perceived and interpreted by the actors, placing this study in the interpretive epistemology, with the use of multimethods, including the quantitative method, more associated with functionalism. Statistical analysis of data obtained through a survey; sociometric analysis; content analysis of primary interview data; besides analysis of secondary data, obtained in electronic sites and registries were used. At the end of this study it was possible to infer that the decision-making process of localization of startups by their founders is rational, according to the terms of limited rationality based on values. The main values considered were relationship networks, family and friends, as well as being born or established in the city. It was noticed that there is a tendency of the influence of the historical trajectory in the decision to remain in the place of origin. And once settled in the city, the decision to change becomes more difficult. The decision to stay in the city is supported by the existence of an entrepreneurial ecosystem, whose most outstanding actors were the universities as trainers of qualified workers; business accelerators and business acceleration programs as new business supporters and the networked entrepreneurs themselves in the San Pedro Valley community. The community was characterized by its collaborative culture that favors the exchange of information, knowledge, experiences and technology, as well as giving visibility to participants and to the city itself. It can be concluded that social capital is generated and maintained in the network differently by central and peripheral members, but all benefit collectively, whether by paying less taxes or being recognized by the reputation of the Community.

The objective of this work was to propose a new methodology for the projection of the variables adopted in the calculation of the cost of capital of the Brazilian electricity distribution sector. In order to establish the percentage of return that compensates investors for the risk assumed when investing in the electric power distribution segment, the National Electric Energy Agency (ANEEL) uses the Capital Asset Pricing Model (CAPM) together with the Weighted Average Cost of Capital (WACC) as a methodology for calculating the cost of regulatory capital applicable to periodic tariff review cycles (CRTPs), which occur on average every four years. To conduct the calculation of the regulatory capital cost, ANEEL must first define the appropriate parameters to represent the components of the CAPM and WACC equations. In addition to the choice of parameters that will represent each variable of the mentioned equations, ANEEL needs to design, based on historical data, a value for each variable that represents the best future estimate of the respective parameter. Currently, the regulatory agency determines, in a discretionary manner, the appropriate time window for the calculation of the mean or median of the components of the WACC equation. However, the long time series of some components used do not present a steady behavior, that is, they do not present mean and variance constants over time, as well as absence of autocorrelation. Thus, the adoption of the average or median by ANEEL to project values may not indicate the best estimate for the cost of regulatory capital, since such statistical measures do not take into account changes in the characteristics of the time series. Considering this context, it was proposed in this study the use of the Auto Regressive Integrated Moving Average (ARIMA) model by the regulator, which treats both the stationary and non-stationary time series, to calculate the value of the component components of the regulatory WACC. The result of the projection of long time series using the ARIMA method indicated values different from those estimated by ANEEL for the cost of regulatory capital. In addition, the projected components presented a greater oscillation throughout the cycles of tariff revision.

The objective of this work is to analyze how the member-leader relationship influences the organizational citizenship behavior of the employees of a public institution in the state of Minas Gerais, having as reference the LMX (Leader Member Exchange Theory) theory. This theory understands leadership as a process, arising from the interaction between leaders and members. When this process evolves to a high level of partnership, in which responsibilities and decisions are shared, employees tend to reciprocate the LMX relationship through organizational citizenship (OCB) behaviors. OCBs are defined as voluntary and spontaneous acts that benefit the organization and are based on a social exchange relationship. The relevance of studying OCBs is based on the assumption that they are essential to increase the effectiveness and efficiency of organizations, especially public organizations. Thus, to achieve the proposed goal, this research uses a qualitative approach, since it intends to understand the phenomenon from the perception of the subjects and the way they interact with the people around them. The research strategy was the case study. For the data collection, semi-structured interviews were carried out with 12 servers (not occupying managerial positions) and 4 managers (occupants of managerial positions) of a public institution. After transcription, the interviews were analyzed using the content analysis method. The results suggest that the LMX relationship exerts a preponderant influence on the behavior of organizational citizenship, given that the affective and professional respect characteristics of the LMX relationship influence the behavior of disclosure of a favorable environment to the organization in the external environment; The characteristic partnership was related to the behaviors of cooperation and self-training; And, finally, the characteristic of open communication was associated with individual initiative and organizational participation behaviors. It should be noted that the system protection behavior was not associated with any characteristics of the LMX relationship and could not be considered as organizational citizenship for public servants. Finally, the contributions to the academic environment and the management of people in the public sector are discussed, and suggestions are presented for the development of future research.

This study had the main objective to speculate about the construction of the careers today. Therefore, this work had, as a fundamental empirical condition, the rescue of the Life History, through the cutout in career trajectories, of subject workers who have lived the experience of choosing to give new direction to their careers throughout their professional life. The thread of this research is based on the understanding of the elements in the career decision-making and its relationship to changes in the work and labor world. Career studies are studies of social, organizational and individual changes. The construction of professional trajectories, then, is a complex phenomenon that involves not only the interconnection of career models and work relationships in a given society, but also the different logics and rationalities that can be used by subjects in career decision-making in specific milestones of these paths. From the assumptions of Alberto Guerreiro Ramos’ substantive approach and also from identifying elements of the different rationalities present in the subjects’ career decision-making, this research set out to answer the question: How do contemporary workers make decisions to construct their careers in the milestones of their professional paths? As results, it seems that the decision-making processes of contemporary workers throughout their career rely on the concomitant, and often conflicting, influence of elements of substantive and instrumental logics. The search for autonomy, the relationship with money, social patterns of success and ethical issues appear as prominent elements that permeate decisions; while motherhood appears as the main career milestone. The option to assume flexible labor relationships, as opposed to the CLT, presents itself as an artifice found by these workers to live in an organizationally planned world, without losing their space of personal self-realization, bringing them closer to the model of the parenthetical man. Finally, future research perspectives are presented.