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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

A (im)possibilidade de uma realidade cosmopolita frente à teoria do caos

Mazzardo, Flavia da Luz January 2016 (has links)
Desde a antiguidade o Cosmopolitismo vem sendo abordado como meta a ser perseguida pela humanidade. Ao longo da história foram realizados diversos estudos, dentre os quais destacam-se os ideais de Immanuel Kant. Desta forma, o escopo deste trabalho é uma abordagem do Cosmopolitismo, tendo como principal referência os ideais de Immanuel Kant e a Teoria Normativa Cosmopolita, a fim de verificar a possibilidade de efetivação desta teoria à realidade, sem, contudo, olvidar-se das teorias físicas a que estamos submetidos. Para isso, o texto é dividido em duas partes. Na primeira parte, analisar-se-á a Teoria Cosmopolita e a Teoria Normativa Cosmopolita. E, ainda, expor-se-á o Butterfly Effect, parte inicial da Teoria do Caos, e sua aplicabilidade à ciência do Direito. Na segunda parte, realizar-se-á uma breve análise do arcabouço teórico do Direito Internacional, mediante a perspectiva histórica da formação dos Blocos Econômicos União Europeia e Mercosul. A finalidade é de verificar possível progressão dos Blocos à um Estado Cosmopolita, por intermédio das formas de aproximação jurídica. Trata-se de uma visão interdisciplinar, vez que a perspectiva jurídica será confrontada à Teoria do Caos, fundamentado na Teoria da Mecânica Clássica. / Since ancient times Cosmopolitanism has been approached as a goal to be pursued by humanity. Throughout the history several studies have been realized, among which the ideals of Immanuel Kant stand out. In this way, the scope of this work is an approach of Cosmopolitanism, having as main reference the ideals of Immanuel Kant and the Cosmopolitan Normative Theory, in order to verify the possibility of putting this theory into reality, without, however, forgetting the theories To which we are subjected. For this, the text is divided into two parts. In the first part, we will analyze Cosmopolitan Theory and Cosmopolitan Normative Theory. Also, the Butterfly Effect, an early part of Chaos Theory, and its applicability to the science of Law, will be exhibited. In the second part, a brief analysis of the theoretical framework of international law will be carried out, through the historical perspective of the formation of the European Union and Mercosur Economic Blocks. The purpose is to verify the possible progression of the Blocks to a Cosmopolitan State, through the means of legal approximation. It is an interdisciplinary view, since the legal perspective will be confronted with Chaos Theory, based on the Theory of Classical Mechanics.
32

Um estudo sobre aplicações da teoria do caos e complexidade à gestão das cadeias de suprimentos / A study regarding applications of the chaos and complexity theory on supply chain managemen

Rodolfo Leandro de Faria Olivo 15 September 2010 (has links)
Este estudo aborda a aplicação da teoria do caos e complexidade à gestão das cadeias de suprimentos. Seu objetivo consiste em responder a questão orientadora da pesquisa, se a teoria do caos e complexidade pode enriquecer o entendimento e compreensão da gestão das cadeias de suprimentos. A fim de contextualizar essa discussão, este trabalho procurou resgatar alguns dos principais autores e conceitos do processo de mudança da visão do determinismo clássico científico do século XIX para as novas abordagens não determinísticas dos séculos XX e XXI, em especial o surgimento e consolidação da abordagem não linear da teoria do caos e complexidade. O método de pesquisa utilizado foi o estudo de caso, o qual focou uma rede brasileira de franquias empresariais do setor de perfumaria e cosméticos. A análise dos resultados obtidos sugere evidências de que, pelo menos parcialmente, a teoria do caos e complexidade pode sim enriquecer e ser relevante para a compreensão da gestão das cadeias de suprimentos. / This study approaches the use of theory of chaos and complexity on supply chain management. Its purpose consists on answering the main research question, whether the theory of chaos and complexity can contribute to enlarge the understanding of supply chain management. In order to contextualize the discussion, the dissertation sake to disclaim the main authors and concepts of the process that changed the 19th century vision of the classic determinism to the 20th and 21st centuries non deterministic approaches with focus on the raise and consolidation of the chaos and complexity theory non linear approach. The research method used was the case study with focus on a Brazilian franchising company of perfumes and cosmetics. The results analysis suggests evidence that, at least in some aspects, theory of chaos and complexity can indeed be relevant to the understanding of supply chain management.
33

Definição automática da quantidade de atributos selecionados em tarefas de agrupamento de dados / Automatic feature quantification in data clustering tasks

José Augusto Andrade Filho 17 September 2013 (has links)
Conjuntos de dados reais muitas vezes apresentam um grande número de atributos preditivos ou de entrada, o que leva a uma grande quantidade de informação. Entretanto, essa quantidade de informação nem sempre significa uma melhoria em termos de desempenho de técnicas de agrupamento. Além disso, alguns atributos podem estar correlacionados ou adicionar ruído, reduzindo a qualidade do agrupamento de dados. Esse problema motivou o desenvolvimento de técnicas de seleção de atributos, que tentam encontrar um subconjunto com os atributos mais relevantes para agrupar os dados. Neste trabalho, o foco está no problema de seleção de atributos não supervisionados. Esse é um problema difícil, pois não existe informação sobre rótulos das classes. Portanto, não existe um guia para medir a qualidade do subconjunto de atributos. O principal objetivo deste trabalho é definir um método para identificar quanto atributos devem ser selecionados (após ordená-los com base em algum critério). Essa tarefa é realizada por meio da técnica de Falsos Vizinhos Mais Próximos, que tem sua origem na teoria do caos. Resultados experimentais mostram que essa técnica informa um bom número aproximado de atributos a serem selecionados. Quando comparado a outras técnicas, na maioria dos casos analisados, enquanto menos atributos são selecionados, a qualidade da partição dos dados é mantida / Real-world datasets commonly present high dimensional data, what leads to an increased amount of information. However, this does not always imply on an improvement in terms of clustering techniques performance. Furthermore, some features may be correlated or add unexpected noise, reducing the data clustering performance. This problem motivated the development of feature selection techniques, which attempt to find the most relevant subset of features to cluster data. In this work, we focus on the problem of unsupervised feature selection. This is a difficult problem, since there is no class label information. Therefore, there is no guide to measure the quality of the feature subset. The main goal of this work is to define a method to identify the number of features to select (after sorting them based on some criterion). This task is carried out by means of the False Nearest Neighbor, which has its root in the Chaos Theory. Experimental results show that this technique gives an good approximate number of features to select. When compared to other techniques, in most of the analyzed cases, while selecting fewer features, it maintains the quality of the data partition
34

An experimental study of organisational change and communication management

Ströh, Ursula 09 May 2005 (has links)
More than ever, organisations are recognising that they need to build and sustain healthy relationships with stakeholders in order to survive, grow and be successful. When an organisation is threatened by environmental changes – such as a crisis or competition as a result of information technology developments, increased customer demands, new legislations, even the threat of AIDS – the need for better communication increases. Successful organisations use the potential of communication management, not only to ease the transformation process, but also to improve their relationships with key stakeholders and the environment, and uphold their reputation. In this sense, communication practitioners are playing managerial, ethical and strategic roles during times of instability because change complexities involve having to deal with stakeholders’ trust and commitment. This thesis attempts to clarify the growing importance of communication management, particularly the role of relationship management. Proposed here is a different way of thinking about change communication strategies and building healthy relationships when organisations and their stakeholders have to make or adjust to change. Existing literature shows that most organisations tend to take a planned approach to change which is structured, consists of specific goals and objectives, and tightly controlled by management. Management sees its role within this paradigm as reducing conflict, creating order, controlling chaos and simplifying all the complexities created by the environment. Possible outcomes are predicted and alternatives for action are planned. Structures determine the information needed, and perceptions are managed by feeding the ‘right’ information or withholding information that might give rise to disorder and chaos. An alternative paradigm is the postmodern perspective, drawing specifically from chaos and complexity theories. These ‘emergent’ approaches to management consider organisations as living and holistic systems, more organic and ecological, seeking less control and more freedom. Organisations that operate like living systems are open, flexible, creative, caring and willing to adjust their strategies to adapt to the environment. While strategic planning is still considered important within the positivistic paradigms of management, it is nevertheless moving from the basic premise of control and prediction to scenario planning and processes of open communication, facilitation and networking. The emphasis is on relationship building via the full participation of the stakeholders involved. This two-way, symmetrical approach is also considered the more ethical. When an organisation is confronted by a problem, and if the constraints on communication are low, the organisation’s publics (employees/stakeholders) tend to feel connected to the problem and want to do something about it. Their need to actively seek information about the problem opens up many communication potentialities, including a willingness to change their attitudes, beliefs and behaviours. The result is a culture of shared responsibility, participation in decision-making, open and honest communication, which leads to a positive working climate and higher productivity. So an important assumption that can be made here is that an empowered public will strive for a positive relationship with the organisation. It can further be derived that a positive relationship between an organisation and its publics, particularly its internal stakeholders (employees), will lead to greater communication and a greater willingness to change. These assumptions were tested in this study. The research questions were: (1) What is the connection between the communication management strategy followed during change in organisations and the relationship and behavioural effects on internal stakeholders (employees)? (2) What are the effects of the communication management strategy followed during high change on relationships and behaviours with internal stakeholders (employees)? The methodology was an experimental approach which allows for the manipulation of independent variables and measurement of influences thereof on dependent variables. The independent variables were the communication and change strategies followed in organisations; the dependent variables were the relationship characteristics (trust, control mutuality, commitment, and satisfaction). The use of scenarios was most effective in this experimental context because different scenarios can project different outcomes. The researcher, therefore, had the opportunity to analyse the effects of the change strategies, as well as the changes that would take place. Data collection from 9 different organisations resulted in, more or less, 10–40 employees from different levels of management and non-management of each organisation. Each respondent evaluated 2 different scenarios, which resulted in 372 evaluations in total (186 for each scenario). The scenarios addressed changes in general and were about various issues. Basic descriptive statistics, as well as hypotheses testing using MANOVA (to test for meaningful differences between groups), were conducted. Other data analyses included testing for validity and reliability, analysis of variance and the Scheffe’s Test for significance of correlations. The findings showed significant proof of the internal validity of the experimental design used, indicating that: (a) the experimental manipulation (the two different change management strategies) had a definite effect on the relationship that internal stakeholders would have with organisations, and that except for the size of the organisation and the educational level of the employees, no other variables had an influence; (b) strong correlations exist between the strategy followed during change and the resulting projected relationships with internal stakeholders of the organisation; (c) high participation during high change led to significantly more positive overall relationships between an organisation and its internal stakeholders, as compared to low participation with a planned approach. In brief, the findings support a strong participative, two-way public relations strategy to be followed when organisations go through major change processes. The significance of these findings calls for a new paradigm in strategic communication and relationship management. Change cannot be solely based on plans and projections, but rather on understanding the complexities of situations and weighing different options available. Well-developed organisational change, therefore, is a strategically managed process that takes into consideration all the possibilities of change in the environment. Traditional studies and models of change management have either ignored the importance of strategic communication as a contribution to successful change, or saw communication as only a tool in the first stages of ransformation. However, to facilitate successful strategic change management is to recognise communication management as contributing significantly to guiding the complete transformation process in building important relationships internally and externally. Alternative emergent approaches to change recognise that change and, more specifically, transformation should be viewed as a continuous process linking to the complexities of the changing market, nature of work environments, new management approaches, organisational boundaries and relationships. Chaos and complexity theories, in particular, stress the importance of interconnectivity between subsystems of societies and organisations. Central to these theories is the observation that relationships built on open communication have the potential of producing something greater for an organisation. The complex and dynamic nature of the environment, structural alteration, and the need for employee flexibility are all recognised. Another important insight is the view that organisations can create visions and perform strategic planning around scenarios that guide actions. Another way of adapting to change is to influence back on change, that is, steer change through relationship building and participative decision-making. To become a true learning organisation requires the building of knowledge architecture with a strong supporting technical infrastructure. The main function of the communication manager, therefore, is to establish networks and structures for the collection and dissemination of information, and ultimately, the translation to knowledge. Communication leaders can connect teams and workgroups by driving communication and building trust. Involving staff in change management decision-making stimulates debate and criticisms, thus creates opportunities for innovation and revolutionary change. These are some of the main preconditions for sustainable change, and all can be achieved through sound communication management and the building of relationships with stakeholders. / Thesis (PhD)--University of Pretoria, 2006. / Communication Management / PhD / Unrestricted
35

Aplikace teorie chaosu na Elliottovy vlny / Application of Chaos Theory to Elliott Wave

Loukotková, Veronika January 2012 (has links)
This diploma thesis compares chaos theory with Elliott wave theory in order to find out whether there is an agreement in the area of prediction. Such formulation of main problem is considered original, new and pioneering issue. By solving an indirect problem of deterministic chaos, existence of the chaos was not proved in a respective time series. The possibility to predict future development of this time series in a short-term period was considered impossible with respect of chaos theory results. Nevertheless, subsequent prediction that used Elliott wave theory showed to be precise. Finally, agreement of both theories was not confirmed. The diploma thesis proved that knowledge of Elliott wave theory and ability to interpret it correctly is a valuable means of prediction.
36

Translating “Lunokhod”: Textual Order, Chaos and Relevance Theory

Bullock, Mercedes 11 September 2020 (has links)
This thesis examines the concepts of textual order and chaos, and how Relevance Theory can be used to translate texts that do not adhere to conventional textual practices. Relevance Theory operates on the basis of presumed order in communication. Applying it to disordered communicative acts provides an opportunity and vocabulary to describe how communication can break down, and the consequences this can have for translation. This breakdown of order, which I am terming a ‘chaos principle’, will be examined through the lens of a Russian-language short story called “Lunokhod”, a story in which textual order, as described by Relevance Theory, breaks down. In this thesis, I first lay out several translation challenges presented by my corpus, discuss each with reference to Relevance Theory, and examine the implications for translation through sample translation segments. This deconstruction section argues that conventional translation methods fail to properly address the challenges of my corpus. Next comes a reconstruction section, in which I develop a theoretical framework for my translation that has roots in Relevance Theory but that frees the translation from the constraints imposed by an ordered view of communication. Finally, I present the translation itself.
37

The Need for De-escalation Techniques in Civil Disturbances

McCord Jr, George Raymond 01 January 2018 (has links)
The response to civil disturbances has historically been the aggressive use of force or escalation with tactics such as the use of police dogs, armed federal troops during war protests, and police field forces. These types of tactics can escalate tensions between protestors and police and only add to the violence and destruction of the incident. To reduce the violence between protestors and the police and the destruction often associated with civil disturbances, it is necessary to examine the need to include de-escalation techniques in the responses. This study utilized 3 theoretical frameworks, the chaos theory, the behavioral decision theory and the strain theory, all which complement each other in interpreting the opinions and experiences of participants and civil disturbance responses. The research questions were used to determine the influence of experience, training, personal biases or external influences on decision making and elicit the opinions of respondents in how they would respond to a civil disturbance. Twenty-five respondents responsible for policy or response decisions regarding civil disturbances from southern U.S. state emergency management and law enforcement agencies took part in the survey. The results of a cross-tabulation analysis determined that there is a need for the inclusion of de-escalation techniques and that they would be effective in civil disturbances. The results also showed that an aggressive response was the preferred method to restoring or maintaining order, but there was a need to examine changes in response tactics. This study may be beneficial and provide a social impact through policy changes, which may lead to a lessening of the severity and scope of an incident.
38

GT-CHES and DyCon: Improved Classification for Human Evolutionary Systems

Johnson, Joseph S. 13 March 2024 (has links) (PDF)
The purpose of this work is to rethink the process of learning in human evolutionary systems. We take a sober look at how game theory, network theory, and chaos theory pertain specifically to the modeling, data, and training components of generalization in human systems. The value of our research is three-fold. First, our work is a direct approach to align machine learning generalization with core behavioral theories. We made our best effort to directly reconcile the axioms of these heretofore incompatible disciplines -- rather than moving from AI/ML towards the behavioral theories while building exclusively on AI/ML intuition. Second, this approach simplifies the learning process and makes it more intuitive for non-technical domain experts. We see increasing complexity in the models introduced in academic literature and, hence, increasing reliance on abstract hidden states learned by automatic feature engineering. The result is less understanding of how the models work and how they can be interpreted. However, these increasingly complex models are effective on the particular benchmark datasets they were designed for, but do not generalize. Our research highlights why these models are not generalizable and why behavioral theoretic intuition must have priority over the black box reliance on automatic feature engineering. Third, we introduce two novel methods that can be applied off-the-shelf: graph transformation for classification in human evolutionary systems (GT-CHES) and dynamic contrastive learning (DyCon). These models are most effective in mixed-motive human systems. While, GT-CHES is most suitable for tasks that involve event-based data, DyCon can be used on any temporal task.
39

Intern kontroll: En fallstudie på Trafikverket

Almqvist, Johanna, Hammerin, Malin January 2016 (has links)
Internal control is something that’s grown more important for enterprises to keep in mind. The community is increasingly affected by the IT-development which demands a bigger degree of security. Enterprises needs to make sure that their systems are up to date and secure enough to keep it safe from unauthorized to take part of sensitive information. Internal control can exist in a major part of the work. If an enterprise have a goal for no harm or serious injury at work, internal control is necessary to reach that goal. The purpose for this essay is to examine how five different departments of Trafikverket practices internal control. How internal control is described. How the guidance from the managements is described and how it reaches the rest of the enterprise. This will lead to a proposal of improvement of the internal control at Trafikverket. We focus our frame of reference on the COSO-model and its five components. The components included in the COSO-model are control environment, risk valuation, control activities, information and communication and monitoring. The essay is a case-study of Trafikverket. We have chosen a qualitative method and interviewed five respondents from the different departments on Trafikverket. The respondents we interviewed works with internal control in their everyday work or have a god insight in the subject. We used a semi structured interview guide with questions based on the COSO framework. The results from our study shows that it exist big variations between how the departments work with internal control. It emerged that there are new guidelines for how the work should be done. This makes it necessary with education to implement the new ways to work. How the departments use the COSO-model varies. Some of them have incorporated the model in their new ways to work others have never heard of it. The conclusion of our study shows that the COSO-model and it´s components contribute to a functioning internal control. Implementing the components is important and the most important feature to good internal control is the corporate management. Education within the enterprise is the most effective way to inform the staff about the model and to implement it. / Intern kontroll är något som blir allt viktigare för organisationer att ha koll på. Samhället påverkas allt mer av IT-utvecklingen vilken ställer krav på en viss grad av säkerhet. Organisationer måste försäkra sig om att deras system är tillräckligt säkra för att inte obehöriga ska komma åt känslig information. Intern kontroll kan finnas i en stor del av arbetet. Om en organisation har ett mål för att ingen ska skadas allvarligt eller avlida på arbetsplatsen, krävs det interna kontroller för att uppnå målet. Syftet med uppsatsen är att undersöka hur de olika verksamhetsområdena inom Trafikverket tillämpar intern kontroll. Hur intern kontroll beskrivs i ledningssystemet och hur det når ut i verksamheten. Det ska leda till ett förbättringsförslag av den interna kontrollen hos Trafikverket. Vår teoretiska referensram fokuserar på COSO-modellen och de fem komponenter som ingår i modellen. De komponenter som ingår i COSO-modellen är kontrollmiljö, riskvärdering, kontrollaktiviteter, information och kommunikation samt övervakning. Uppsatsen är en fallstudie på Trafikverket. Vi har valt en kvalitativ metod där vi genomfört fem intervjuer på de olika verksamhetsområdena på Trafikverket. Vi har intervjuat personer som har positioner där de arbetar med intern kontroll eller har god insyn i området. Vi har använt en semistrukturerad intervjuguide där frågorna baserats på COSO:s ramverk. Resultatet av vår studie visar att det finns stora variationer i hur verksamhetsområdena arbetar med intern kontroll. Det framkom att det har kommit nya riktlinjer för hur arbetet ska utföras. Det i sin tur kräver en utbildningsinsats för att implementera arbetssätt. Hur verksamhetsområdena använder COSO-modellen i arbetet varierar. Vissa har det inarbetat i arbetssätten och känner till modellen medan andra aldrig har hört talats om den. Slutsatser av vår studie visar att COSO-modellen och dess komponenter bidrar till en fungerande intern kontroll. Att implementering av komponenterna är viktig och att det viktigaste för bra intern kontroll är företagsledningen. Utbildning inom organisationen är det effektivaste sättet att informera de anställda och implementera modellen.
40

Analysis, simulation and control of chaotic behaviour and power electronic converters

Natsheh, Ammar Nimer January 2008 (has links)
The thesis describes theoretical and experimental studies on the chaotic behaviour of a peak current-mode controlled boost converter, a parallel two-module peak current-mode controlled DC-DC boost converter, and a peak current-mode controlled power factor correction (PFC) boost converter. The research concentrates on converters which do not have voltage control loops, since the main interest is in the intrinsic mechanism of chaotic behaviour. These converters produce sub-harmonics of the clock frequency at certain values of the reference current I[ref] and input voltage V[in], and may behave in a chaotic manner, whereby the frequency spectrum of the inductor becomes continuous. Non-linear maps for each of the converters are derived using discrete time modelling and numerical iteration of the maps produce bifurcation diagrams which indicate the presence of subharmonics and chaotic operation. In order to check the validity of the analysis, MATLAB/SIMULINK models for the converters are developed. A comparison is made between waveforms obtained from experimental converters, with those produced by the MATLAB/SIMULINK models of the converters. The experimental and theoretical results are also compared with the bifurcation points predicted by the bifurcation diagrams. The simulated waveforms show excellent agreement, with both the experimental waveforms and the transitions predicted by the bifurcation diagrams. The thesis presents the first application of a delayed feedback control scheme for eliminating chaotic behaviour in both the DC-DC boost converter and the PFC boost converter. Experimental results and FORTRAN simulations show the effectiveness and robustness of the scheme. FORTRAN simulations are found to be in close agreement with experimental results and the bifurcation diagrams. A theoretical comparison is made between the above converters controlled using delayed feedback control and the popular slope compensation method. It is shown that delayed feedback control is a simpler scheme and has a better performance than that for slope compensation.

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