Дисертації з теми "Tur\'{a}n problem"
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Breed, Elizabeth Alice. "'n Metakognitiewe onderrigleerstrategie vir paarprogrammeerders ter verbetering van kennisproduktiwiteit / Elizabeth Alice Breed." Thesis, North-West University, 2010. http://hdl.handle.net/10394/4367.
Повний текст джерелаThesis (Ph.D. (Education)--North-West University, Potchefstroom Campus, 2010.
Coba, Caballero Dulce Mar��a. "Expectativas del segmento l��sbico gay sobre la oferta tur��stica." Thesis, Universidad de las Am��ricas Puebla, 2010. http://catarina.udlap.mx/u_dl_a/tales/documentos/lhr/coba_c_dm/.
Повний текст джерела(cont.) Se muestran las caracter��sticas que buscan para lugares como hoteles y restaurantes, al igual que sus preferencias y gustos para algunos establecimientos. Se exponen las incomodidades y molestias en varios lugares visitados. Y por ��ltimo, se mencionan los destinos gay friendly m��s importantes y frecuentados a nivel mundial
Xie, Zhifu. "On the N-body Problem." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1444.pdf.
Повний текст джерелаHernandez, David Michael. "Solving the N-body problem in astrophysics." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119107.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 299-307).
The astrophysical N-body problem describes N point masses interacting with each other through pairwise gravitational forces. A solution of this problem is frequently necessary in dynamical astronomy. In the collisional N-body problem, the relaxation time is small compared to the timescale we are interested in studying. Collisional N-body problems include open and globular clusters and protoplanetary disks during the stage, typically lasting hundreds of Myrs, when planetary embryos collide and merge. In the first part of this Thesis, I develop new symplectic integrators which provide a solution for the N-body problem. The integrators decompose the N-body problem into a superposition of two-body problems, which are integrable. Since they are symplectic, the integrators conserve all Poincaré invariants (the evolution is Hamiltonian). We used the integrators to compute the evolution of a globular cluster through core collapse up to 20 times faster than standard techniques. In the second part of this Thesis, I apply the results from the first part of the Thesis to planetary dynamics finding that for problems with hierarchical binaries (planets with moons, planetary systems with binary stars, etc.), the integrators are far more efficient than alternatives. I show numerically that a popular code is neither symplectic nor time-symmetric, and can yield incorrect three-body dynamics. I derive symplectic integrators in various coordinate systems with different Hamiltonian splittings and compare them through backward error analysis and tests of Pluto's orbital element evolution. The final part of this Thesis is concerned with time-symmetric and time-reversible integration in astrophysics, whether we are integrating the N-body problem or other ordinary differential equations. These integrators have been proposed as an alternative to symplectic integration. I show, again using backward error analysis, that such integrators are usually useful, but can behave worse than symplectic integrators. I find time-reversibility can be eliminated in some cases while good error behavior is still maintained.
by David Michael Hernandez.
Ph. D.
Arruda, Alian Paiva de. "Os "farofeiros" em excurs?o nas lagoas de Arituba, Bo?gua e Carcar? (N?sia Floresta/RN): an?lise de uma outra face do turismo potiguar." Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18904.
Повний текст джерелаThis thesis analyzes another side of Potiguar tourism , the unplanned side, neglected and kept out of touristic activities: excursionism, a leisure practice enjoyed by tourists with low consumer power, and who are commonly referred by the pejorative term farofeiros (picnic lovers). The geographic research sites considered for this study include Arituba, Bo?gua and Carcar? lakes in N?sia Florest, Rio Grande do Norte, where on Sundays and holidays the arrival of hundreds of excursionists, from around the metropolitan region of Natal, from surrounding municipalities, and neighboring States, such as Para?ba and Pernambuco, can be observed. The objective of this study is to analyze the appropriation of the physical site by the practice of excursionism, focusing on its relation to other social agents that also appropriate a designated touristic area. The theoretical discussion considers the use of the space by the touristic leisure practice and the appropriation by distinct social agents, using categories of analysis, such as, production of the space, territory and leisure. The field work was completed with interviews and questionnaires administered to excursionists, excursion organizers, local merchants, representatives of the public setor from the municipalities, and professional dune buggy drivers; besides this, photos, informal dialogue and field observations were important methodological instruments used. From the data, statistical analysis and the development of thematic maps demonstrating the established flux between excursionists and the segregated activity were done. With this research, one can affirm that the practice of excursionism is neglected by the public sector, contrary to the intention of the hegemonic agent?s intentionality present in this touristic territory which aim at the development of a lucrative activity, geared toward tourists with greater spending power. This ignored and neglected faction of Potiguar tourism is considered poor or dirty , and generate conflicts among the distinct social agents: tourists, the market and the public sector, simultaneously peaking interest, which is then appropriated by the informal sector and formal economy. Excursionism is an expressive phenomenon, a socially relevant practice, enjoyed by citizens of the working class who, in order to have a day of leisure, use alternative consumer practices and subvert various strategies of segregation that are imposed within these tourist areas, behavior that, in part, justifies the nickname, picnic lovers , given to these tourists
Esta disserta??o analisa uma outra face do turismo potiguar , a face n?o planejada, negligenciada e segregada da atividade tur?stica. Trata-se do estudo do excursionismo, uma pr?tica de lazer tur?stico realizada por turistas com baixo poder de consumo, denominados pejorativamente de farofeiros , pelo senso comum. O recorte espacial da pesquisa compreende as lagoas de Arituba, Bo?gua e Carcar? (N?sia Floresta/RN), onde se observa nos dias de domingo e feriados a chegada de centenas de excursionistas, oriundos da Regi?o Metropolitana de Natal, de outros munic?pios do entorno e de estados vizinhos, como Para?ba e Pernambuco. O objetivo desta pesquisa ? analisar como se d? a apropria??o do espa?o pela pr?tica do excursionismo enfocando suas rela??es com outros agentes sociais os quais, tamb?m, se apropriam de um territ?rio tur?stico. A discuss?o te?rica considera o consumo do espa?o pela pr?tica do lazer tur?stico e a apropria??o por distintos agentes sociais, utilizando categorias de an?lise como produ??o do espa?o, territ?rio e lazer. A pesquisa de campo foi realizada por meio de entrevistas e aplica??o de question?rios, junto aos excursionistas, organizadores das excurs?es, comerciantes locais, representantes do poder p?blico municipal e da categoria profissional de bugueiros; al?m disto, o registro fotogr?fico, di?logos informais e a observa??o em campo foram instrumentos metodol?gicos importantes. A partir dos dados realizaram-se an?lises estat?sticas e elabora??o de mapas tem?ticos os quais expressam os fluxos estabelecidos pelos excursionistas e a segrega??o da atividade. Com a pesquisa, pode-se afirmar que a pr?tica do excursionismo ? negligenciada pelo poder p?blico, pois esta contraria a intencionalidade dos agentes hegem?nicos presentes neste territ?rio tur?stico uma vez que este visam o desenvolvimento de uma atividade lucrativa, voltada para turistas com maior poder de consumo. Observa-se nesta face ignorada do turismo potiguar, tida como pobre e suja , a exist?ncia de conflitos entre os distintos agentes sociais: turistas, comerciantes locais e poder p?blico, ao mesmo tempo em que, tamb?m, desperta o interesse e ? apropriada pelo setor informal e formal da economia. O excursionismo ? um fen?meno expressivo, uma pr?tica social relevante, realizada por cidad?os que comp?em a classe trabalhadora os quais, para terem um dia de lazer, utilizam-se de pr?ticas alternativas de consumo e burlam variadas estrat?gias de segrega??o que lhes s?o impostas neste territ?rio tur?stico, comportamentos que, em parte justifica a alcunha de farofeiro dada a estes turistas
Valentini, Gabriele. "The Best-of-n Problem in Robot Swarms." Doctoral thesis, Universite Libre de Bruxelles, 2016. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/232502.
Повний текст джерелаDoctorat en Sciences de l'ingénieur et technologie
info:eu-repo/semantics/nonPublished
Alhowaity, Sawsan Salem. "Relative equilibria in the curved N-body problem." Thesis, Canadian Mathematical Bulletin, 2018. https://dspace.library.uvic.ca//handle/1828/10037.
Повний текст джерелаGraduate
Steiger, Don. "Numerical n-body methods in computational chemistry /." free to MU campus, to others for purchase, 1998. http://wwwlib.umi.com/cr/mo/fullcit?p9924930.
Повний текст джерелаStadel, Joachim Gerhard. "Cosmological N-body simulations and their analysis /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/5449.
Повний текст джерелаUrminsky, David. "Stability and numerical errors in the N-body problem." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/9804.
Повний текст джерелаOng, James Kwan Yau. "The predictability problem." Phd thesis, kostenfrei, 2007. http://opus.kobv.de/ubp/volltexte/2007/1502/.
Повний текст джерелаDale, Edward Robert. "Visualizing the inner structure of n-body data using splatting and skeletonization /." Link to online version, 2006. https://ritdml.rit.edu/dspace/handle/1850/2071.
Повний текст джерелаChalmers, James Handson. "The group of an N-body problem in celestial mechanics." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0020/NQ48325.pdf.
Повний текст джерелаChalmers, James Handson Carleton University Dissertation Mathematics. "The Group of an N-body problem in celestial mechanics." Ottawa, 1999.
Знайти повний текст джерелаSwiderski, Rafal. "The Sparling-Tod type N space-time and the googly problem." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.514999.
Повний текст джерелаSharaf, Khadijah Abdullah Mohammed. "On the prescribed mean curvature problem on the standard n-dimensional ball." Thesis, University of Leicester, 2013. http://hdl.handle.net/2381/28493.
Повний текст джерелаIuliano, Jay R. "A Solution to the Circular Restricted N Body Problem in Planetary Systems." DigitalCommons@CalPoly, 2016. https://digitalcommons.calpoly.edu/theses/1612.
Повний текст джерелаYan, Duokui. "Four-body Problem with Collision Singularity." Diss., CLICK HERE for online access, 2009. http://contentdm.lib.byu.edu/ETD/image/etd3111.pdf.
Повний текст джерелаDai, Qianhui [Verfasser]. "Periodic solutions of the N point-vortex problem in planar domains / Qianhui Dai." Gießen : Universitätsbibliothek, 2014. http://d-nb.info/106882557X/34.
Повний текст джерелаReina, Andreagiovanni. "Engineering swarm systems: A design pattern for the best-of-n decision problem." Doctoral thesis, Universite Libre de Bruxelles, 2016. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/232717.
Повний текст джерелаDoctorat en Sciences de l'ingénieur et technologie
info:eu-repo/semantics/nonPublished
Lloyd, Gemma. "Morse theory for invariant functions and its application to the n-body problem." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.506273.
Повний текст джерелаGebhard, Björn [Verfasser]. "An equivariant degree and periodic solutions of the N-vortex problem / Björn Gebhard." Gießen : Universitätsbibliothek, 2018. http://d-nb.info/1161339442/34.
Повний текст джерелаHolman, Matthew Jon. "Symplectic maps for the N-body problem with applications to solar system dynamics." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/54394.
Повний текст джерелаLuo, Ping. "Design and Implementation of High Performance Algorithms for the (n,k)-Universal Set Problem." [College Station, Tex. : Texas A&M University, 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7033.
Повний текст джерелаJedrey, Richard M. "Development of a Discretized Model for the Restricted Three-Body Problem." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306856595.
Повний текст джерелаJordaan, Yolandi Maria. "Die assessering van die probleme wat onderwysers binne klasverband ervaar en hul behoefte aan die benutting van 'n spelterapeut." Pretoria : [s.n.], 2003. http://upetd.up.ac.za/thesis/available/etd-10252004-102706.
Повний текст джерелаParker, Christopher Alonzo. "K x N Trust-Based Agent Reputation." VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd/702.
Повний текст джерелаJuttu, Sreekanth. "A new approach for fast potential evaluation in N-body problems." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/351.
Повний текст джерелаSchilling, Judith [Verfasser], and N. [Akademischer Betreuer] Henze. "Untersuchungen zur Asymptotik und zum Erwartungswert im verallgemeinerten Coupon-Collector-Problem / Judith Schilling ; Betreuer: N. Henze." Karlsruhe : KIT-Bibliothek, 2020. http://d-nb.info/1207392987/34.
Повний текст джерелаSimmons, Skyler C. "Analysis of Multiple Collision-Based Periodic Orbits in Dimension Higher than One." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5584.
Повний текст джерелаWang, Qingyang. "A study of transient bottlenecks: understanding and reducing latency long-tail problem in n-tier web applications." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/54002.
Повний текст джерелаXiao, Bo. "Parallel algorithms for generalized N-body problem in high dimensions and their applications for bayesian inference and image analysis." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53052.
Повний текст джерелаOliveira, Danielle Aparecida da Silva. "Estabilidade espectral no problema carregado de n-corpos." Pós-Graduação em Matemática, 2018. http://ri.ufs.br/jspui/handle/riufs/7670.
Повний текст джерелаNeste trabalho faremos o estudo da estabilidade linear de um equilíbrio relativo no problema carregado de n-corpos. Para isso, introduziremos a definição de estabilidade espectral de um equilíbrio e encontraremos condições necessárias para termos tal estabilidade. Começaremos o trabalho mostrando resultados relevantes na teoria de equações diferenciais, dando destaque a alguns teoremas importantes, como por exemplo, Teorema de Existência e Unicidade, teoremas para estabilidade linear, Teorema de Floquet e Teoremas de Estabilidade e Instabilidade de Lyapunov. Será feito um estudo bastante conciso dos sistemas Hamiltonianos, no qual enunciaremos resultados e definições que serão de grande utilidade no decorrer da dissertação. Entre tais definições merece destaque a de configurações centrais (C.C.), uma vez que exibiremos resultados relacionando-as aos equilíbrios relativos. Introduziremos o conceito de estabilidade espectral e veremos proposições e teoremas para o problema carregado de n-corpos. Será exibido um exemplo que traz uma particularidade ao problema carregado e que o diferencia bastante do problema clássico de n-corpos. Por fim, faremos uma aplicação dos resultados obtidos ao problema carregado de 3-corpos.
São Cristóvão, SE
Campos, Serrano Juan. "Modèles attractifs en astrophysique et biologie : points critiques et comportement en temps grand des solutions." Phd thesis, Université Paris Dauphine - Paris IX, 2012. http://tel.archives-ouvertes.fr/tel-00861568.
Повний текст джерелаHartell, Cycil George. "'n Histories opvoedkundige studie van gesinsopvoeding in skole." Thesis, Pretoria : [s.n.], 2000. http://upetd.up.ac.za/thesis/available/etd-03162006-152553.
Повний текст джерелаKohne, Jens. "Drei Betrachtungen zum Problem der Eigenschaften dargestellt anhand der Lehren von H. H. Price, G. F. Stout und N. Kemp Smith /." [S.l. : s.n.], 2003. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB10806357.
Повний текст джерелаSouza, Izabela Julliane Barbosa de. "Paisagem, um patrim?nio esquecido: subs?dios para a constru??o de uma metodologia de valora??o e prote??o do cen?rio natural litor?neo." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12409.
Повний текст джерелаThe so-called "residential tourism" came to intensify the previous occupation of the coastal zones, characterized by traditional beach houses, and brought significant consequences for their spatial configuration, and especially for its scenic value of the landscape. Although there is the intention to regulate the activities of enterprising groups by some legal instruments to control the use and occupation of land, and to contain some negative effects, the actions of government are still inefficient in trying to follow the implications on the landscape from the accelerated growth of the real estate and touristic sectors. Supported in the speech of economic development and income generation, public managers prioritize areas to attract tourists to the detriment of preserving important physical attributes of the natural environment that contribute significantly to the quality of life. The result can be noticed in the use of natural elements as one of the major components in the land valorization, and in the immediate attraction of investors and enterprising. Therefore, the objective of this work is to contribute to the debate on the landscape preservation a little detailed thematic in view of their relevance in the current context - by indicating subsidies to the creation of a methodology for the evaluation and protection of coastal zones that may assist the government in creating new instruments, and better prepare it in control of the occupation of these areas. For such, was followed two ways to analysis: the indirect method and the direct method. The first is grounded in the evaluation of landscape attributes, which is based on the work of Raquel Tardin (2008) and Eduardo Cuesta, Encarnaci?n Algarra and Isabel Pastor (2001). The second, based on the research of Leticia and Carlos Hardt (2010) and on the concepts of phenomenology - expressed by Antonio Christofoletti (1985) and Yi-Fu Tuan (1983) - considers the population perspective on the quality of the natural scenery. Developed through cartographic materials, photographic collections and quantitative tables, this dissertation utilized as a case study the beaches of Barra de Tabatinga and Camurupim, located in the city of N?sia Floresta/RN. Despite already being sighted spaces of advanced stage of landscape degradation in these locations, areas of remarkable scenic value can still be found, what reinforce the urgency in adopting preservationists actions. The absence of laws focused on the management and protection of the landscape singularities associated with the inefficiency of the government to invigilate the land occupation in coastal zones, encourage the excessive action of the real estate-tourism, and consequently make the government the main responsible for the environmental and landscape impacts in these areas - by its omission or by their connivance. Therefore, the legislation permeates this entire process and constitutes itself as the most effective way to guarantee the right to the landscape to present and future generations. Are also pointed some important considerations to build a methodology, especially concerning possibilities of improvements and adaptations of its applicability in each case
O chamado turismo residencial veio intensificar a anterior ocupa??o das zonas litor?neas, marcada pelas tradicionais casas de veraneio, o que trouxe consequ?ncias expressivas para sua configura??o espacial e, sobretudo, para o seu valor c?nico paisag?stico. Embora exista o intento de regular a atua??o de grupos empreendedores atrav?s de alguns instrumentos legais no controle do uso e ocupa??o do solo, e assim conter alguns efeitos negativos, as a??es do poder p?blico ainda se mostram ineficientes na tentativa de acompanhar as implica??es na paisagem advindas do acelerado crescimento dos setores imobili?rio e tur?stico. Apoiados no discurso do desenvolvimento econ?mico e da gera??o de renda, gestores p?blicos findam por privilegiar espa?os de atra??o de turistas em detrimento da preserva??o de atributos f?sicos importantes do cen?rio natural que contribuem de forma significativa para a qualidade de vida da popula??o. O resultado pode ser percebido no uso dos elementos naturais como um dos principais componentes na valoriza??o do solo, e na atra??o imediata de investidores e empreendedores. Dessa forma, objetiva-se com este trabalho contribuir para o debate sobre a preserva??o da paisagem tem?tica ainda pouco aprofundada em face de sua relev?ncia no contexto atual atrav?s da indica??o de subs?dios para a cria??o de uma metodologia de avalia??o e prote??o das zonas litor?neas que possa vir a auxiliar o poder p?blico na cria??o de novos instrumentos, e melhor prepar?-lo no controle da ocupa??o dessas ?reas. Para isso, seguiu-se dois caminhos de an?lise: o m?todo indireto e o m?todo direto. O primeiro se alicer?a na avalia??o de atributos paisag?sticos, no qual se toma como base os trabalhos de Raquel Tardin (2008) e Eduardo Cuesta, Encarnaci?n Algarra e Isabel Pastor (2001). J? o segundo, fundamentado na pesquisa de Let?cia e Carlos Hardt (2010) e em conceitos da fenomenologia expressos por Antonio Christofoletti (1985) e Yi-Fu Tuan (1983) considera a perspectiva da popula??o acerca da qualidade do cen?rio natural por ela percebido. Desenvolvida por meio de materiais cartogr?ficos, acervos fotogr?ficos e tabelas quantitativas, esta disserta??o utilizou como estudo de caso as praias de Barra de Tabatinga e Camurupim, situadas no munic?pio de N?sia Floresta/RN. Apesar de j? serem avistados espa?os de avan?ado est?gio de degrada??o paisag?stica nestas localidades, ainda podem ser encontradas ?reas de ineg?vel valor c?nico, o que refor?a a urg?ncia na ado??o de medidas preservacionistas. A aus?ncia de leis focadas na gest?o e prote??o das singularidades da paisagem, associada ? inefici?ncia do poder p?blico em fiscalizar a ocupa??o do solo nas zonas costeiras, favorecem a a??o desmedida do imobili?rio-tur?stico, e, por isso, tornam o Estado o maior respons?vel pelos impactos ambientais e paisag?sticos nessas ?reas seja pela sua omiss?o, seja pela sua coniv?ncia. Destarte, a legisla??o permeia todo esse processo e se configura como o meio mais eficaz na garantia do direito ? paisagem ?s presentes e futuras gera??es. Por fim, s?o tamb?m apontadas considera??es importantes para a constru??o de uma metodologia, especialmente no que tange possibilidades de aperfei?oamentos e adapta??es de sua aplicabilidade em cada caso de estudo
Boldrini, Pierre. "The cusp-core problem in dwarf galaxies : new solutions." Thesis, Sorbonne université, 2020. http://www.theses.fr/2020SORUS082.
Повний текст джерелаThis doctoral research focuses on the nature of the dark matter (DM) and more particularly on the inconsistency of inner DM density profiles in dwarf galaxies, the cusp-core problem. We have found new resolutions of this cold DM challenge at small scales using high resolution fully GPU N-body simulations. First, we have re-investigated the Fornax cusp-core problem using observational results on the spatial and mass distributions of globular clusters in order to put constraints on the DM profile. Then, N-body simulations were designed to demonstrate that DM minihalos, as a new component of globular clusters, resolve both the timing and cusp-core problems in Fornax if the globular clusters were recently accreted. Secondly, we have examined whether DM candidates in the form of PBHs can solve the cusp-core problem in low-mass galaxies. This mechanism works for PBHs in the 25-100 Msol mass window but requires a lower limit on the PBH mass fraction of 1% of the total dwarf galaxy DM content. Then, we have demonstrated that subhalos sink and transfer energy via dynamical friction into the centres of dwarf galaxies. This dynamical heating kicks any central intermediate massive BH out to tens of parsecs. Finally, we demonstrate that accretion of a satellite on a highly eccentric orbit causes the formation a DM core and naturally explains a present BH offset by sub-parsecs in M31
Riegel, Ryan Nelson. "Generalized N-body problems: a framework for scalable computation." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50269.
Повний текст джерелаBotha, S. (Sonja). "'n Ondersoek na die rol van strukturele groepfaktore en groepprosesse met betrekking tot bestuurspaninnoverendheid." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52962.
Повний текст джерелаENGLISH ABSTRACT: Innovation and creativity are established research areas but both are relatively new research areas within the field of organisational psychology. Early research on innovation and creativity were primarily the focus area of academics in related social sciences disciplines. Research on innovation and creativity was integrated with the orientations and perspectives of organisational psychologists over a period of time. In other words the development and identification of innovation as a success factor of the work environment is something that took place over decades. Changes in the competitive environment over the last few decades contributed to the increasing interest in the concept of innovation. Today managers recognise innovation as a necessity that needs to be managed and developed. Three levels of analyses (the individual, group and organisation) can be identified in the innovation literature. Until recently researchers focused primarily on the individual and the organisation as units of analysis. As a results of this, research that focuses on the individual and the organisation are quite comprehensive compared to studies that focus on the group as a unit of analysis. The utilisation of teams have increased in organisations, but our knowledge of the factors and dimensions that determine group innovation are still restricted. The complex nature of group innovation could perhaps be a contributing factor in terms of the amount of research studies that have been done on group innovation. It is especially in this regard that this study sets out to thoroughly investigate existing group innovation literature and to combine this with an investigation into the possible contributions of related social psychological research (for example group decision making, intragroup conflict and creative problem solving) to the innovation literature. Each one of the three units of analysis (individual, group and organisation) has a unique impact on group innovation, but not one of them explains exclusively the innovativeness of a team. An interdependent relationship exists between these factors. This stresses the complexity of the concept and as a result of this, researchers are encouraged to investigate the possible contributions of related social psychological themes to the innovation research and literature. In this regard this study focused extensively on a input, process and output model of group innovation by West and Anderson (1996) to determine to what extend some of the aspects of the model explained the innovativeness of a group. This is a comprehensive model and for the purposes of this study only certain aspects of the model were included in the research process. The size of the team and team tenure were the two input elements that were included in the study. The process elements of the model includes clarity and commitment to team objectives, participation, task orientation and support for innovation. In terms of the output aspects of the model the focus was on the following: how radical, effective, new and extensive the innovation is, as well as the number of innovations per team. The results of the study indicate that there are a relationship between the variables of West and Anderson's input, process and output model (1996) and the innovativeness of the team. The results of this study indicate that the model by West and Anderson is a valuable contribution to the research literature on group innovation behaviour. Although group innovation has not been researched extensively, it seems that group innovation is starting to make an impact on the organisational psychology domain and that it will be a central aspect of the research agenda of organisational psychologists in future. If we are able to establish a sound theoretical basis organisations will be able to understand and predict group innovation behaviour. It can be concluded that this study made a contribution to the research literature on group innovation behaviour in terms of an awareness of the impact and necessity of innovation in today's work environment, and also in extending the existing knowledge base of group innovation behaviour
AFRIKAANSE OPSOMMING: Alhoewel innovasie al VIr 'n geruime tyd as navorsingsdomein gevestig IS, het organisasiesielkundiges eers redelik onlangs aan innovasie en kreatiwiteit begin aandag skenk. Een van die redes waarom dit so lank geneem het voordat innovasie as 'n waardige wetenskaplike navorsingsonderwerp besef was, was die feit dat vroeëre navorsing oor hierdie onderwerp deur akademici in ander sosiaal wetenskaplike dissiplines uitgevoer was. Die integrering van sodanige navorsing met organisasiesielkundiges se perspektiewe en oriëntasies het skynbaar slegs met verloop van tyd plaasgevind. Die ontwikkeling van innovasie as 'n verskynsel van die werksomgewing het dus stelselmatig oor dekades heen plaasgevind. Die impak van omgewingsveranderinge op organisasies het ook oor die afgelope paar dekades beduidende belangstelling ten opsigte van innovasie ontsluit. Innovasie, as 'n komponent van organisatoriese-kompeterendheid en -effektiwiteit, is vandag 'n noodsaaklikheid wat toenemend deur hedendaagse bedryfsleiers ondersteun en bestuur word. Binne die werksomgewing kom innovasie op drie verskillende vlakke (die individu, die groep en die organisasie) voor. Tot dusver het innovasienavorsers egter in hoofsaak op die individu en organisasie as ontledingseenheid gefokus. Navorsing wat die individu of organisasie as ontledingseenheid gebruik, is volop in vergelyking met studies wat die groep as ontledingseenheid gebruik. Met ander woorde, alhoewel die gebruikmaking van spanne in organisasies toeneem, is ons kennis van die faktore en dimensies wat spaninnoverendheid bepaal, steeds beperk. Die beperkte teoretiese basis van bestaande groepinnovasienavorsing kan deels aan die omvangryke en komplekse aard van die verskynsel toegeskryf word. Dit is juis in hierdie opsig dat hierdie studie dit ten doel gestel het om bestaande groepinnovasieliteratuur deeglik te ondersoek en om vas te stel tot watter mate verwante sosiaal-sielkundige navorsing (onder andere groepbesluitneming, intragroepkonflik en kreatiewe probleemoplossing) 'n bydrae tot die innovasieliteratuur kan lewer. Elk van die drie ontledingsvlakke (individu, groep, organisasie) het 'n unieke effek op die innoverendheid van 'n span, maar nie een van hierdie kategorieë verklaar uitsluitlik die innoverendheid van 'n span nie. Die interafhanklike verhouding van hierdie faktore beklemtoon die kompleksiteit van die verskynsel en dit moedig toekomstige navorsers aan om die nuttige bydraes van verwante sosiaal-sielkundige temas te ondersoek. In hierdie verband is daar ook breedvoerig gebruik gemaak van 'n inset, proses en uitset model van groepinnoverendheid deur West en Anderson (1996), ten einde vas te stel tot watter mate sekere aspekte van die model die innoverendheid van 'n span voorspel. Vanweë die omvangrykheid van die model is slegs sekere veranderlikes in die navorsing ingesluit. In terme van die insette is daar op grootte en spandienstydperk gefokus. Die proses faset van die model verwys na die duidelikheid en verbondenheid tot doelwitte, deelname, taakoriëntasie en ondersteuning vir innovasie. Ten opsigte van die uitset faset van die model is daar op die volgende aspekte gefokus: die radikaalheid, omvangrykheid, nuutheid en effektiwiteit van die innovasie asook die getal innovasie items binne die groep. Die resultate van die studie dui daarop dat daar wel 'n verband tussen hierdie veranderlikes van West en Anderson (1996) se model en die innoverendheid van groepe bestaan. Hierdie model van groepinnoverendheid blyk vanuit die resultate van hierdie studie, en vorige studies, nuttig te wees vir die bestudering van groepinnovasiegedrag. Alhoewel daar tot dusver min lig gewerp is op die faktore wat groepinnoverendheid bepaal, wil dit voorkom asof groepinnovasienavorsing 'n sentrale faset van die organisasiesielkunde se navorsingsagenda in die toekoms sal wees. Die vestiging en uitbreiding van 'n teoretiese basis salorganisasies in staat stelom die innovasiegedrag van spanne beter te verstaan en te voorspel. Ten slotte kan dit vermeld word dat hierdie studie In bydrae gelewer het tot groepinnovasiegedrag, nie net in terme van 'n bewusmaking van die impak en noodsaaklikheid van innovasie in die hedendaagse werksomgewing nie, maar ook in terme van die uitbreiding van die bestaande kennisbasis oor groepinnovasiegedrag.
Franceschi, Paul. "Une Application Des N-Univers A L'argument De L'apocalypse Et Au Paradoxe De Goodman." Diss., University of Corsica, 2002. http://hdl.handle.net/10919/71552.
Повний текст джерелаHuisamen, Petronella. "'n Evaluasie van die tydsbestuur, doelwitbeplanning en probleemoplossing kapasiteitsbouprogramme van die Suid-Afrikaanse Polisiediens / deur Petronella Huisamen." Thesis, North-West University, 2003. http://hdl.handle.net/10394/408.
Повний текст джерелаThesis (M.A. (MW))--North-West University, Potchefstroom Campus, 2004.
Fernandes, Antonio Carlos. "Sobre configurações centrais do problema de n-corpos. Configurações centrais planares, espaciais e empilhadas." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/45/45132/tde-04062012-103241/.
Повний текст джерелаIn this work we present some aspects of the Newtonian n--body problem. We study the case of two bodies, which have a straightforward solution, although we can not get all the variables as functions of the time. For n greater or equal to 3 we show that there is no method to integrate this problem by quadratures. We can have just some information about the general case, as the Lagrange-Jacobi\'s Identity the Sundman-Weierstrass\'s theorem and others. We will see some cases of particular solutions, which will be called homographic solutions. In these solutions the geometric shape of initial configuration of the bodies is preserved during the movement. We will see necessary conditions on the initial positions that turn possible to obtain these solutions. We show a relation between these particular solutions and critical points of an application, that associate the total energy and total angular momentum of the system. In these several cases, we will fall in same algebraic equation, which we called of the central configurations equations. We show that the central configurations equations are equivalent to another set of algebraic equations, which are also used to compute the central configurations, but with these equations the symmetries of the problem become clearer. We will make some direct applications these algebraic equations. An interesting subclass of the class of central configurations are called stacked differential equations, in which a proper subset of the bodies form a central configuration too. In the last two chapters we will see some examples of central configurations of this kind, especially those where we can remove a mass and still have a central configuration.
Thibaut, Jérôme. "Corrélations, intrication et dynamique des systèmes quantiques à N Corps : une étude variationnelle." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEN021/document.
Повний текст джерелаThis thesis presents a study of quantum many-body systems at zero temperature, where the behavior of the system is purely driven by the quantum effects. I will introduce a variationnal approach developped with Tommaso Roscilde, my PhD supervisor, and Fabio Mezzacapo, my co-supervisor, in order to study these systems.This approach is based on a parametrisation of the quantum state (named Ansatz) on which we apply a variational optimisation, allowing us reproduce the system's evolution under Schrödinger's equation with a limited number of variables.By considering an imaginary-time evolution, it is possible to reconstruct the system's ground state. I focused on S=1/2 XX spin chain, where the long-range quantum correlations complicate a variational study; and I have specifically targeted our Ansatz in order to reproduce the correlations and the entanglement of the ground state. Moreover I considered the antiferromagnetic S=1/2 J1-J2 spin chain, where the non-trivial sign structure of the coefficients of the quantum state introduces an important challenge for the quantum Monte Carlo approach; and where the magnetic frustration induces a quantum phase transition (from a state with long range correlations to a non-magnetic state in the form of a valence-bond crystal).Finally I focused on the time evolution of a quantum many-body system starting from a non-stationary state. I studied the ability of our approach to reproduce the linear increase of the entanglement during time, which is a fondamental obstacle for other approaches such as the density-matrix renormalization group
Hjerpe, Daniel. "A study on SSE optimisation regarding initialisation and evaluation of the Fast Multipole Method." Thesis, Uppsala universitet, Avdelningen för beräkningsvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-298122.
Повний текст джерелаЛютий, Тарас Володимирович, Тарас Владимирович Лютый, Taras Volodymyrovych Liutyi, Олександр Юрійович Поляков, Александр Юрьевич Поляков, Oleksandr Yuriiovych Poliakov, S. Denisov, and P. Hanggi. "Technique of the Fast Ferrofluids Simulation." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35341.
Повний текст джерелаBreed, Elizabeth Alice. "'n Analise van die reflektiewe vermoëns van effektiewe en oneffektiewe leerders in rekenaarprogrammering / Elizabeth Alice Breed." Thesis, North-West University, 2006. http://hdl.handle.net/10394/13.
Повний текст джерелаThesis (M.Ed.)--North-West University, Potchefstroom Campus, 2006.
Larsson, Andreas [Verfasser]. "Gogol' und das Problem der menschlichen Identität : Die "Petersburger Erzählungen" und der "Revisor" als Beispiele für ein grundlegendes Thema in den Werken von N. V. Gogol'. / Andreas Larsson." Frankfurt a.M. : Peter Lang GmbH, Internationaler Verlag der Wissenschaften, 1992. http://d-nb.info/1165480972/34.
Повний текст джерелаPires, Matheus Giovanni. "Abordagem neuro-genética para mapeamento de problemas de conexão em otimização combinatória." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/18/18153/tde-12062009-150911/.
Повний текст джерелаDue to applicability constraints involved with the algorithms for solving combinatorial optimization problems, systems based on artificial neural networks and genetic algorithms are alternative methods for solving these problems in an efficient way. The genetic algorithms must its popularity to make possible cover nonlinear and extensive search spaces. On the other hand, artificial neural networks have high processing rates due to the use of a massive number of simple processing elements and the high degree of connectivity between these elements. Additionally, neural networks with feedback connections provide a computing model capable of solving a large class of optimization problems, which refer to optimization of an objective function that can be subject to constraints. This thesis presents a novel approach for solving connection problems in combinatorial optimization using a neurogenetic approach. More specifically, a modified Hopfield neural network is associated with a genetic algorithm in order to guarantee the convergence of the network to the equilibrium points, which represent feasible solutions for the combinatorial optimization problems.
Du, Plessis Linda Alida. "'n Onderrigmodel vir die aanwending van tegnologie by die implementering van aksieleer in die vak inligtingstelsels / Linda Alida du Plessis." Thesis, Potchefstroom University for Christian Higher Education, 2002. http://hdl.handle.net/10394/9095.
Повний текст джерелаThesis (Ph.D. (Education))--Potchefstroom University for Christian Higher Education, 2003