• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 84
  • 43
  • 10
  • 5
  • 5
  • 3
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 208
  • 208
  • 34
  • 34
  • 33
  • 30
  • 28
  • 26
  • 21
  • 21
  • 19
  • 17
  • 17
  • 16
  • 16
  • 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.
171

Canadian homeless mobilities: relational perspectives on At Home/Chez Soi participants’ interurban migrations

Kaufman, Andrew 29 August 2016 (has links)
This thesis examines the mobility patterns of 613 participants from the At Home/Chez Soi Research Demonstration Project on Mental Health and Homelessness who were surveyed in five Canadian cities (Vancouver, Winnipeg, Toronto, Montréal, and Moncton). Participants’ mobility histories are treated as life courses: visualized using a GIS spatiotemporal analysis and complemented by examining their self-described reasons for movement (n=1,750). I contend that homeless mobilities are complex, entangled, and multiple. To better understand these mobilities, I apply relational theoretical perspectives to literature from the mobilities turn. I conceptualize mobility as composed of the relations between various actors. These relations coordinate amidst social differences, histories, and orderings of power. Together, actors and the relations between them, become more than the sum of their parts. To see mobility relationally, is to say that mobilities have emergent properties that reproduce, deepen, or ameliorate marginalization for those experiencing homelessness. I identify a series of actors and their relations composing homeless mobilities via time-space mapping, descriptive statistics, and the exploratory coding of survey data. I conclude by detailing a relational view of homeless mobilities while suggesting that expulsion is one emergent property of this system. / October 2016
172

Interaction as existential practice : An explorative study of Mark C. Taylor’s philosophical project and its potential consequences for Human-Computer Interaction

Åhman, Henrik January 2016 (has links)
This thesis discusses the potential consequences of applying the philosophy of Mark C. Taylor to the field of Human-Computer Interaction (HCI). The first part of the thesis comprises a study focusing on two discursive trends in contemporary HCI, materiality and the self, and how these discourses describe interaction. Through a qualitative, inductive content analysis of 171 HCI research articles, a number of themes are identified in the literature and, it is argued, construct a dominant perspective of materiality, the self, and interaction. Examples that differ from the dominant discourse are also discussed as alternative perspectives for each of the three focal areas. The second part of the thesis comprises an analysis of Mark C. Taylor’s philosophical project which enables a number of philosophical positions on materiality, the self, and interaction to be identified. These positions are suggested to be variations and rereadings of themes found in Friedrich Nietzsche’s philosophy. These variations emerge as Taylor approaches Nietzsche through poststructuralism and complexity theory, and it is argued that the apparent heterogeneity of Taylor’s project can be understood as a more coherent position when interpreted in relation to Nietzsche’s philosophy. Based on the findings of the two literature studies, the thesis then discusses the possible consequences for HCI, if Taylor’s philosophy were to be applied as a theoretical framework. The thesis argues that Taylor’s philosophy describes the interaction between humans and computers  as an existential process, which contrasts with the dominant HCI discourse; that this view can be related to and provide a theoretical foundation for the alternative discourses in HCI; and that it can contribute to developing HCI. / Denna avhandling syftar till att diskutera de möjliga konsekvenserna av att applicera Mark C. Taylors filosofi inom fältet Människa-Datorinteraktion (MDI). Den första delen av avhandlingen utgörs av en studie som fokuserar på två diskursiva trender inom MDI, materialitet och självet, och hur dessa diskurser beskriver interaktion. Genom en kvalitativ, induktiv innehållsanalys av 171 forskningsartiklar inom MDI-fältet identifieras ett antal teman som kan sägas utgöra dominerande perspektiv i framställningen av de tre fokusområdena. Studien identifierar också exempel på alternativa perspektiv som kontrasterar mot den vedertagna bilden av materialitet, självet samt interaktion inom MDI. Den andra delen av avhandlingen utgörs av en analys där Mark C. Taylors filosofiska projekt utforskas med syfte att identifiera filosofiska positioner som kan fungera som teoretiska resurser för en fördjupad förståelse av de tre fokusområdena. Genom en jämförelse mellan dessa positioner och filosofiska teman hos Friedrich Nietzsche framträder en bild där Taylors positioner kan sägas utgöra variationer och omläsningar av Nietzsches texter i relation till mer sentida teoretiska ansatser. Analysen syftar till att påvisa att Taylors projekt, som vid första anblicken kan tyckas utgöras av en rad skiftande och ibland motsägelsefulla filosofiska framställningar utan inre sammanhang, i själva verket kan förstås som en mer sammanhängande teoretisk position om den läses i relation till Nietzsches filosofi. Med utgångspunkt i de två litteraturstudierna diskuteras slutligen möjliga konsekvenser av att använda Taylors filosofi som teoretiskt ramverk inom MDI och följande slutsatser presenteras: att Taylors filosofi erbjuder ett perspektiv på interaktionen mellan människor och datorer som betonar interaktion som en identitetsskapande, existentiell process vilket skiljer sig från det dominerande perspektivet inom MDI; att Taylors filosofi kan relateras till och utgöra ett teoretiskt fundament för de alternativa MDI-diskurser som tidigare identifierats, samt att en sådan process kan bidra till en vidareutveckling av teoribildningen inom MDI. / <p>QC 20160831</p>
173

Sparse instances of hard problems

Dell, Holger 01 September 2011 (has links)
Diese Arbeit nutzt und verfeinert Methoden der Komplexitätstheorie, um mit diesen die Komplexität dünner Instanzen zu untersuchen. Dazu gehören etwa Graphen mit wenigen Kanten oder Formeln mit wenigen Bedingungen beschränkter Weite. Dabei ergeben sich zwei natürliche Fragestellungen: (a) Gibt es einen effizienten Algorithmus, der beliebige Instanzen eines NP-schweren Problems auf äquivalente, dünne Instanzen reduziert? (b) Gibt es einen Algorithmus, der dünne Instanzen NP-schwerer Probleme bedeutend schneller löst als allgemeine Instanzen gelöst werden können? Wir formalisieren diese Fragen für verschiedene Probleme und zeigen, dass positive Antworten jeweils zu komplexitätstheoretischen Konsequenzen führen, die als unwahrscheinlich gelten. Frage (a) wird als Kommunikation modelliert, in der zwei Akteure kooperativ eine NP-schwere Sprache entscheiden möchten und dabei möglichst wenig kommunizieren. Unter der komplexitätstheoretischen Annahme, dass coNP keine Teilmenge von NP/poly ist, erhalten wir aus unseren Ergebnissen erstaunlich scharfe untere Schranken für interessante Parameter aus verschiedenen Teilgebieten der theoretischen Informatik. Im Speziellen betrifft das die Ausdünnung von Formeln, die Kernelisierung aus der parameterisierten Komplexitätstheorie, die verlustbehaftete Kompression von Entscheidungsproblemen, und die Theorie der probabilistisch verifizierbaren Beweise. Wir untersuchen Fragestellung (b) anhand der Exponentialzeitkomplexität von Zählproblemen. Unter (Varianten) der bekannten Exponentialzeithypothese (ETH) erhalten wir exponentielle untere Schranken für wichtige #P-schwere Probleme: das Berechnen der Zahl der erfüllenden Belegungen einer 2-KNF Formel, das Berechnen der Zahl aller unabhängigen Mengen in einem Graphen, das Berechnen der Permanente einer Matrix mit Einträgen 0 und 1, das Auswerten des Tuttepolynoms an festen Punkten. / In this thesis, we use and refine methods of computational complexity theory to analyze the complexity of sparse instances, such as graphs with few edges or formulas with few constraints of bounded width. Two natural questions arise in this context: (a) Is there an efficient algorithm that reduces arbitrary instances of an NP-hard problem to equivalent, sparse instances? (b) Is there an algorithm that solves sparse instances of an NP-hard problem significantly faster than general instances can be solved? We formalize these questions for different problems and show that positive answers for these formalizations would lead to consequences in complexity theory that are considered unlikely. Question (a) is modeled by a communication process, in which two players want to cooperatively decide an NP-hard language and at the same time communicate as few as possible. Under the complexity-theoretic hypothesis that coNP is not in NP/poly, our results imply surprisingly tight lower bounds for parameters of interest in several areas, namely sparsification, kernelization in parameterized complexity, lossy compression, and probabilistically checkable proofs. We study the question (b) for counting problems in the exponential time setting. Assuming (variants of) the exponential time hypothesis (ETH), we obtain asymptotically tight, exponential lower bounds for well-studied #P-hard problems: Computing the number of satisfying assignments of a 2-CNF formula, computing the number of all independent sets in a graph, computing the permanent of a matrix with entries 0 and 1, evaluating the Tutte polynomial at fixed evaluation points.
174

O profissional do ensino de língua inglesa e o seu objeto de ensino: "do you know what I mean?"

Balsemão, Débora Izé 18 June 2013 (has links)
Submitted by Maicon Juliano Schmidt (maicons) on 2015-04-08T18:59:24Z No. of bitstreams: 1 Débora Izé Balsemão.pdf: 11128988 bytes, checksum: 5a43c72393fdf36c2d9b48685170cb03 (MD5) / Made available in DSpace on 2015-04-08T18:59:25Z (GMT). No. of bitstreams: 1 Débora Izé Balsemão.pdf: 11128988 bytes, checksum: 5a43c72393fdf36c2d9b48685170cb03 (MD5) Previous issue date: 2013-06-18 / Nenhuma / Como campo investigativo, a Formação de Professores de Segunda Língua (FPL2) se desenvolveu sob a influência da Teoria Sociocultural ao longo das últimas décadas. As contribuições desse ramo da Linguística Aplicada (LA) têm sido prolíferas no que tange os estudos que enfatizam o desenvolvimento de programas de ensino de segunda língua (L2) e, em especial, o desenvolvimento de programas de ensino para a docência em L2. Os principais temas investigativos em FPL2 são relacionados às experiências dos professores na aprendizagem e no ensino de L2; as origens e o desvelamento dos processos mentais dos professores e o seu impacto no ensino de L2; e o papel dos contextos de aprendizagem e de ensino de L2. Juntamente com as questões relacionadas à língua-alvo, esses três tópicos - experiência, processos mentais e contextos - constituem o sistema da aprendizagem para a docência de inglês no contexto do ENSINO MÉDIO DA EDUCAÇÃO BÁSICA BRASILEIRA, o qual é proposto como construto de aprendizagem para o ensino nesse âmbito específico a partir dos princípios oriundos da Teoria da Complexidade e da Teoria Sociocultural. O OBJETIVO deste estudo é contribuir para o debate atual que envolve a melhoria da qualidade do ensino médio da educação básica brasileira com base em estudos fundamentados na LA que enfatize a FPL2 de uma perspectiva interacionista. A abordagem reivindicatória / participatória do presente estudo qualitativo é reiterada pela participação de sete professores de língua inglesa do ensino médio de escolas públicas e particulares, os quais colaboraram com suas narrativas escritas e orais através de entrevistas semiestruturadas. A sua contribuição é, assim, a composição de construto que oferece alternativa para a FPL2, ou seja, um olhar que reconheça a interconexão sistêmica dos elementos envolvidos no desenvolvimento profissional dos professores de inglês, particularmente quando considerado a partir de uma perspectiva situada. / Second Language Teacher Education (SLTE) as a field of inquiry has developed under the strong influence of Sociocultural Theory (SCT) over the past decades. The findings of this Applied Linguistics (AL) branch of investigation have contributed greatly to the development of second language (L2) teaching programs in general and to learning to teach L2 programs in particular. Main themes of inquiry in the SLTE field are related to practitioners’ experiences in learning and teaching the L2; the origins and the unfolding of teacher cognition and its impact in L2 teaching; and the role of contexts of learning and of teaching L2. Along with the target language, these three topics — experience, cognition, and contexts — are part of a system that comprises the learning to teach English language in the Brazilian secondary school context, which is proposed to embrace a construct of learning to teach in such specific setting. The aim of this study is to contribute to the debate on the improvement of Brazilian secondary schooling by departing from AL findings on SLTE — as opposed to the acceptation of teacher training. The advocacy / participatory approach of this qualitative study is reinforced by the collaboration of seven secondary school English language teachers, who contributed with their written narratives followed by structured interactive interviews. The prime contribution of this study is the proposal of an alternative perspective to English language teacher education, i.e., one that actually acknowledges the systemic intertwinedness of agents in English language teachers’ professional development, particularly from a situated point of view. In order to do so, a construct for SLTE for Brazilian secondary English language teachers is presented and developed from the perspective of Complexity Theory.
175

Supply chains behaving badly : a dynamic model of inter-organisational supply chain exchange behaviour under rational, relational and chaotic paradigms

Wilson, Mark M. J. January 2006 (has links)
Supply chain exchange relationships are complex and sometimes chaotic sociological and organisational phenomena. This complexity is compounded by the boundary spanning necessity of forming supply chain partnerships that are further exacerbated by goal divergence and asymmetric information. One of the main questions for consideration is how these dyadic exchange relationships are maintained and develop over time in response to the various channel behaviours of the actors (the buyer and seller)? In particular, exchange relationships are theorised to be sensitive in some degree to attempts at economic appropriation, and conversely coordinative efforts. Such efforts manifest themselves into the mutually opposing forces broadly labelled as opportunistic and collaborative behavioural paradigms. Drawing from the concepts of Systems and Chaos/Complexity theories, it is theorised that the movement from one form of relational arrangement to another is enacted in a non-linear and dynamic manner with periods of relational equilibrium disrupted by bifurcations resulting in the emergence of new levels of relationship. However, not all exchange relationships are susceptible to constant change, rather, there should be some threshold barrier or relationship inertia that must be overcome before a bifurcation occurs. Yet what is not known is how strong these bonds are to the enactment of opportunistic and collaborative partner behaviours. Hence, 189 manufacturing supply chain relationships were survey-interviewed in order to determine the impact that collaborative and opportunistic behaviours have on supply chain relational movement. The results show that generally exchange relationships do in fact change in response to these enacted behaviours, and that actual levels of supply chain behaviour over a range of 12 variables could be measured. Indeed, the level of opportunistic behaviour experienced by the sample was disturbing. In addition, the level of tolerance (zone of tolerance) for specific behaviours was measured for the first time in the field. Overall, it was found that supply chain exchange relationships do indeed evolve in a non-linear dynamic manner in response to opportunistic and collaborative manoeuvres by the dyadic actors. Finally, these ideas were summarised in the Dynamic Relational Development (DRD) concept that explains how supply chain relationships dynamically change. In addition, the dualistic nature of the collaborative versus opportunistic behaviour choice for exchange actors is tentatively reconciled by the deontological approach of the Supply Chain Citizen theory offered in this research.
176

A complex systems perspective on communities and tourism : a comparison of two case studies in Kaikoura and Rotorua

Horn, Chrys January 2002 (has links)
This thesis analyses research into the evolution and adaptation of the communities in Rotorua and Kaikoura by using a complex systems perspective. This perspective requires that the analyst look beyond the obvious impacts of tourism such as employment, crowding, and congestion, to the processes that underlie the experiences of local people in relation to tourism. The configuration of the destination, the flows of people in the area, the visitor types and the ratio of hosts to guests all influence a community's interactions with tourists. In small destinations, the effect of host interactions with guests is potentially much greater than is the case in larger destinations. However, in using a complex systems perspective to analyse the effects of tourism on these two destinations, it becomes clear that the impacts of tourism are more than just the impacts of tourists. The impacts of tourism are intertwined with the processes of trust, leadership and decision making occurring both within the community and within the wider regional and national socio-economic systems. As such, local perceptions of tourism are associated with history, geography, local politics and local social processes. As concepts, the meanings of both 'tourism' and 'community' emerge from the experiences people have, and the associations that they make with the two terms. Thus, the meaning of both 'tourism' and 'community' are idiosyncratic and locally defined. Each term means different things to residents in Rotorua and Kaikoura, and each affects how residents perceive tourism in their respective towns. For example, the associations that people make between historical events and processes such as restructuring are quite different in each of the two communities. In Rotorua, tourism is seen as a source of stability, as a phenomenon that confers a higher level of perceived control on the community. In Kaikoura, tourism is seen as a source of change and it confers a lesser sense of perceived control on the community overall. Likewise, the relationship between the local council and the community underlies the sense of security people feel about local decision making processes. This relationship is mediated by a range of processes including the effort that the council put into communicating with community members, the leadership shown by the council, the way in which they facilitate community visioning processes, which then provide a basis for both leadership and decision making. Underlying these processes are community processes of rivalry, competition, cooperation, labelling and stereotyping that all affect the levels of trust that the community have in those around them. Community cohesion (which is not the same as community agreement) underlies a community's ability to work together to manage tourism. Thus using a complex systems approach to analyse the impacts of tourism in two destinations has shown that there is much more to tourism than the impacts of tourists and their activities. Instead, the way the community system interacts with the tourism system gives rise to the impacts of tourism. Tourism can be usefully conceptualised as a process that is inextricably interwoven with history, politics and community interaction processes at the destination level. Perceptions of tourism reflect these processes and the understanding that local people have of them, and the level of control that they feel they have over tourism development. With little trust in local decision making processes, people have a low sense of control over how tourism development affects them. In tourism planning, therefore, it may be more effective to focus primarily on the processes by which tourism development and management occurs in the local area and to look at mitigating the effects of tourists only after building community capacity to adaptively manage tourism in their area. Communities need a sense of control over their world, and this is only undermined when experts and institutions try to advise courses of action without involving a range of community players in the process of managing tourism. Thus, government and other organisations and institutions at local level must focus on working with communities to build local capacity to manage tourism, without imposing on those communities to convince them to 'treat tourists well' or to manage their environment better, so they become more attractive as a destination.
177

Reed-Solomon-koder i ett McElieceskryptosystem : En kodteoretisk genomgång

Henriksson, Magnus January 2009 (has links)
Detta arbete är ett examensarbete i matematik på kandidatnivå vid Växjö universitet. Det är en studie av kodningsteori i allmänhet med fokusering på cykliska koder och Reed-Solomon-koder i synnerhet. Reed-Solomon-koderna används för att skapa McElieces kryptosystem. En kortfattad analys av McElieces kryptosystems säkerhet görs tillsammans med en genomgång av kända sätt att forcera denna typ av kryptosystem. Här visar det sig att användning av Reed-Solomon-kod försvagar kryptosystemet i förhållande till om den ursprungligt föreslagna Goppa-koden används. För att kunna göra denna säkerhetsanalys görs också en kortfattad genomgång av komplexitetsteori och vad det innebär att ett problem är NP-fullständigt. Nyckelord: Kodningsteori, Kodteori, Cykliska koder, BCH-koder, Reed-Solomon-koder, McElieces kryptosystem, Kryptering, Kodforcering, Komplexitetsteori, NP-fullständigt / This work is produced on bachelor level in mathematics at University of Växjö. It is a study of coding theory with focus on cyclic codes in general and Reed-Solomon codes in detail. Reed-Solomon codes are used for implementing McEliece's crypto system. A short analysis of McEliece's crypto system security is also made together with a description of some known ways to break this type of cryptosystem. It is shown that using Reed-Solomon codes weaken this cryptosystem compared to using the original supposed Goppa codes. The security analyse also need a short summary of complexity theory and what it means that a problem is NP-complete. Keywords: Coding theory, Cyclic codes, BCH codes, Reed-Solomon codes, McEliece's cryptography system, Cryptography, Code breaking, Complexity theory, NP-complete
178

Reed-Solomon-koder i ett McElieceskryptosystem : En kodteoretisk genomgång

Henriksson, Magnus January 2009 (has links)
<p>Detta arbete är ett examensarbete i matematik på kandidatnivå vid Växjö universitet. Det är en studie av kodningsteori i allmänhet med fokusering på cykliska koder och Reed-Solomon-koder i synnerhet. Reed-Solomon-koderna används för att skapa McElieces kryptosystem. En kortfattad analys av McElieces kryptosystems säkerhet görs tillsammans med en genomgång av kända sätt att forcera denna typ av kryptosystem. Här visar det sig att användning av Reed-Solomon-kod försvagar kryptosystemet i förhållande till om den ursprungligt föreslagna Goppa-koden används. För att kunna göra denna säkerhetsanalys görs också en kortfattad genomgång av komplexitetsteori och vad det innebär att ett problem är NP-fullständigt.</p><p><strong>Nyckelord: </strong>Kodningsteori, Kodteori, Cykliska koder, BCH-koder, Reed-Solomon-koder, McElieces kryptosystem, Kryptering, Kodforcering, Komplexitetsteori, NP-fullständigt</p> / <p>This work is produced on bachelor level in mathematics at University of Växjö. It is a study of coding theory with focus on cyclic codes in general and Reed-Solomon codes in detail. Reed-Solomon codes are used for implementing McEliece's crypto system. A short analysis of McEliece's crypto system security is also made together with a description of some known ways to break this type of cryptosystem. It is shown that using Reed-Solomon codes weaken this cryptosystem compared to using the original supposed Goppa codes. The security analyse also need a short summary of complexity theory and what it means that a problem is NP-complete.</p><p><strong>Keywords:</strong> Coding theory, Cyclic codes, BCH codes, Reed-Solomon codes, McEliece's cryptography system, Cryptography, Code breaking, Complexity theory, NP-complete</p>
179

Processo de desenvolvimento das inovações na cadeia produtiva da maçã brasileira

Cruz, Marcia Rohr da 19 September 2013 (has links)
A inovação exerce importância no negócio das empresas, compreende diferentes aspectos e contribui de formas diversas para o seu crescimento e desenvolvimento. Dentre os aspectos que podem ser levados em consideração para as inovações estão os aspectos internos relacionados com o contexto da organização e os aspectos externos que envolvem todo o ambiente em que a organização está inserida. Acredita-se que estes aspectos exercem influência tanto na decisão para o desenvolvimento das inovações quanto para a aplicação dos produtos ou processos de inovação no mercado. Este estudo teve como objetivo identificar como e porque as inovações emergem na cadeia produtiva da maçã brasileira e quais os resultados obtidos a partir das inovações implementadas nos segmentos produtores e packinghouses. Os procedimentos metodológicos empregados têm como estratégia de pesquisa o estudo de caso, o qual foi efetivado através das abordagens qualitativa e quantitativa de pesquisa. Em relação aos objetivos o estudo teve caráter exploratório, descritivo e explicativo. A etapa qualitativa foi executada através da pesquisa exploratória com especialistas da cadeia produtiva da maçã brasileira para identificar as inovações que foram implementadas e também para classificá-las de acordo com o encadeamento do anel tetralógico. Dentre os principais resultados obtidos ressalta-se a identificação dos aspectos que compuseram o framework e serviram de norteador para a realização da pesquisa qualitativa. Destaca-se também o encadeamento obtido entre os aspectos identificados de forma empírica e a junção com as teorias utilizadas, em especial os pressupostos de Edgar Morin, através da teoria da complexidade. A etapa quantitativa foi efetivada através do método estatístico, por meio da análise fatorial, cuja análise apresentou a identificação dos resultados que as inovações apresentam para os fatores sociais, econômicos, organizacionais, políticos e mercadológicos na amostra de produtores e packing-houses da cadeia produtiva da maçã brasileira definidas para esta investigação. Na análise quantitativa merece destaque a apresentação através de estatística descritiva da caracterização das amostras, bem como os processos de inovação que cada amostra tem implementado. A análise fatorial permitiu a apresentação das variáveis destacadas para cada fator nas quatro amostras (produtores e packing-houses de Santa Catariana e Rio Grande do Sul) individualmente e também para toda a cadeia incluindo as quatro amostras. Através da análise de regressão múltipla identificou-se a percepção sobre o impacto das inovações para toda cadeia produtiva da maçã brasileira, incluindo os produtores e packing-houses dos estados de Santa Catarina e Rio Grande do Sul. / Submitted by Marcelo Teixeira (mvteixeira@ucs.br) on 2014-04-25T19:25:44Z No. of bitstreams: 1 Tese Marcia Rohr da Cruz.pdf: 2558047 bytes, checksum: 714824fb7f0fdc80f826cdc4a5231130 (MD5) / Made available in DSpace on 2014-04-25T19:25:44Z (GMT). No. of bitstreams: 1 Tese Marcia Rohr da Cruz.pdf: 2558047 bytes, checksum: 714824fb7f0fdc80f826cdc4a5231130 (MD5) / Innovation plays importance in business enterprises, comprises different aspects and contributes in different ways to their growth and development. Among the aspects that can be considered for the innovations are the internal aspects related to the context of the organization and external aspects that involve the whole environment in which the organization operates. It is believed that these aspects influence both the decision for the development of innovations in the application for product or process innovation in the market. This study aimed to identify how and why innovations emerge in the productive chain of Brazilian apples and what the results obtained from the innovations implemented in the sectors producing and packing houses. The methodological procedures have employed as a research strategy case study, which was effected by means of qualitative and quantitative approaches to research. In relation to the objectives the study had an exploratory, descriptive and explanatory. The qualitative analysis was performed through exploratory research with experts in the productive chain of Brazilian apples to identify innovations that have been implemented and also to classify them according to the chain ring tetralogical. Among the main results emphasize the identification of aspects that compose the framework and provided a guideline for conducting qualitative research. Also noteworthy is the chain obtained among those identified empirically and the junction with the theories used, in particular the assumptions of Edgar Morin, by complexity theory. The quantitative stage was effected through the statistical method, by means of factor analysis, which analysis showed identification results show that the innovations to the social, economic, organizational, political and market in the sample of producers and packing-houses of the production chain Brazilian apple defined for this investigation. The quantitative analysis deserves the presentation through descriptive statistics of the characterization of the samples, as well as the processes of innovation that each sample has implemented. A factor analysis of the presentation highlighted variables for each factor in the four samples (producers and packing houses of Santa Catarina and Rio Grande do Sul) individually and for the entire chain including the four samples. Through multiple regression analysis identified the perception of the impact of innovations for the entire production chain of Brazilian apples, including growers and packing houses in the states of Santa Catarina and Rio Grande do Sul.
180

A emergência da competência oral como sistema dinâmico, adaptativo e complexo no ensino-aprendizagem de inglês como língua adicional para iniciantes / The emergence of oral competence as a dynamic adaptive and complex system in english learning-teaching for beginners

Lesliê Vieira Mulico 20 February 2013 (has links)
No âmbito do ensino-aprendizagem de línguas adicionais, pesquisas acerca do desenvolvimento da oralidade têm demonstrado que se trata de um fenômeno multidimensional. Nakatani (2010) mostrou que o domínio de estratégias comunicacionais são indicadores de desempenho linguístico e se relacionam com a proficiência do aprendiz; Kang, Rubin e Pickering (2010) observaram que os traços fonológicos afetam a percepção sobre inteligibilidade e proficiência; Hewitt e Stephenson (2011), e Ahmadian (2012) indicaram que as condições psicológicas individuais interferem na qualidade da produção oral. Escribano (2004) sugeriu que a referência contextual é essencial na construção de sentido; Gao (2011) apontou os benefícios do ensino baseado na construção do sentido, a partir de metáforas conceptuais (LAKOFF e JOHNSON, 1980), codificação dupla (CLARK e PAIVIO, 1991) e esquemas imagéticos (LAKOFF, 1987); e Ellis e Ferreira-Junior (2009) demonstraram que as construções exibem efeitos de recência e priming, afetando o uso da linguagem dos parceiros interacionais. Tais estudos apontam para a natureza complexa da aquisição de L2, mas o fazem dentro do paradigma experimental da psicolinguística. Já Larsen-Freeman (2006), demonstra que a fluência, a precisão e a complexidade desenvolvem-se com o tempo, com alto grau de variabilidade, dentro do paradigma da Teoria da Complexidade. Em viés semelhante, Paiva (2011) observa que os sistemas de Aquisição de Segunda Língua (ASL) são auto-organizáveis. Esses trabalhos, no entanto, não abordaram aprendizes de L2 com proficiência inicial, como pretendo fazer aqui. Tendo como referenciais teóricos a Teoria da Complexidade e a Linguística Cognitiva, o presente trabalho apresenta um estudo de caso, qualitativo-interpretativista, com nuances quantitativos, que discute os processos de adaptação que emergiram na expressão oral de um grupo de aprendizes iniciantes de inglês como língua adicional no contexto vocacional. Parte do entendimento de que na sala de aula vários (sub)sistemas complexos coocorrem, covariando e coadaptando-se em diferentes níveis. A investigação contou com dados transcritos de três avaliações coletados ao longo de 28 horas de aula, no domínio ENTREVISTA DE EMPREGO. Após observar a produção oral das aprendizes, criei uma taxonomia para categorizar as adaptações que ocorreram na sintaxe, semântica, fonologia e pragmática da língua-alvo. Posteriormente organizei as categorias em níveis de prototipicidade (ROSCH et al, 1976) de acordo com as adaptações mais frequentes. Finalmente, avaliei a inteligibilidade de cada elocução, classificando-as em três níveis. A partir desses dados, descrevi como a prática oral dessas participantes emergiu e se desenvolveu ao longo das 28 horas. Os achados comprovam uma das premissas da Linguística Cognitiva ao mostrarem que os níveis de descrição linguística funcionam conjuntamente em prol do sucesso comunicacional. Além disso, demonstram que a função do professor, como discutem LARSEN-FREEMAN e CAMERON (2008), não é gerar uniformidade, mas sim oportunizar vivências que estabeleçam continuidade entre o mundo, o corpo e a mente / In the field of second and foreign language learning, research on oral communication development has been demonstrating that it is a multi-dimensional phenomenon. Nakatani (2010) showed that the ability to use communicative strategies is related to linguistic performance and learners proficiency level; Kang, Rubin and Pickering (2010) affirmed that learners phonology affects perception over proficiency and intelligiblity; Hewitt and Stephenson (2011), as well as Ahmadian (2012), contended that individual psychological conditions interfere in the quality of production. Escribano (2004) suggested that contextual knowledge is essential to conceptualization; Gao (2011) pointed out the benefits of an approach based on conceptual metaphors (LAKOFF and JOHNSON, 1980), dual coding (CLARK and PAIVIO, 1991), and image schemas (LAKOFF, 1987); Ellis and Ferreira-Junior (2009) demonstrated that constructions exhibit priming and recency effects, which influence participants language use. These studies together instantiate the complex nature of L2 acquisition on the experimental psychology paradigm. In the scope of Complexity Theory, Larsen-Freeman (2006) demontrated that fluency, accuracy, and complexity increase over time, despite exhibiting high individual variability. By the same token, Paiva (2011) observed that SLA systems are self-organisable. Nevertheless, none of the above-mentioned studies addressed beginners, as we intend to do herein. By overlapping Complexity Theory and Cognitive Linguistics, we present a case study, with sprinkles of quantification, in order to specifically discuss the adaptation processes that emerged from the oral practice of a group of six English beginner female learners (n=6) in the vocational context. We understand that several complex (sub-) systems co-occur in the classroom, covarying and coadapting in different levels. The investigation counted on transcribed data (ATKINSON and HERITAGE, 1984) from three oral evaluations collected over 28 class hours, in the JOB INTERVIEW domain. After observing the learnersoral production, we created a taxonomy to categorise the adaptations that emerged in target language syntax, meaning, fonology and pragmatics. Later, we displayed the categories in prototype levels (ROSCH et al, 1976) in terms of frequency. Finally, we classified the inteligibility of each learners utterance in three levels. By means of these data, we were able to describe how participants oral expression emerged and evolved over 28 hours. The results reaffirm one of Cognitive Linguistics premises when showing that language description levels work jointly in favor of communicative success; and demonstrate that the teacher, rather than generate uniformity, ought to give rise to learning opportunities that provides a continuum between the world, the body and the mind, as discussed by Larsen-Freeman e Cameron (2008)

Page generated in 0.0479 seconds