Complex Adaptive Systems
Mostrando 13-24 de 54 artigos, teses e dissertações.
-
13. Redes interorganizacionais horizontais como sistemas adaptativos complexos: um estudo em uma rede de supermercados do Sul de Minas Gerais. / Horizontal inter-organizational networks as a complex adaptative system: a study in a network of supermarkets in the south of Minas Gerais
The horizontal inter-organizational networks (HINs) have been studied under distinct scopes. Aiming to contributing to studies about them, this piece of work takes a different look at them as a starting point into understanding the uprising and development phenomenon of such organizational form. The precepts of Complex Adaptive Systems (CAS) along with those
Publicado em: 2009
-
14. Análise de redes sociais em comunidades virtuais emergentes de jogos on-line por meio de coleta de dados automatizada
The current worldwide popularity of on-line games has resulted in the formation of virtual communities with hundreds of people. This is due to the daily interaction of people in games called Massive Multiplayer Online Role-Playing Games (MMORPGs). These communities are culturally diverse and permeated by social ties estabilished through different ways in the
Publicado em: 2009
-
15. Fuzzy inference systems approach for long term hydrothermal scheduling / Sistema de inferencia nebulosa ao planejamento da operação hidrotermica de medio prazo
The long term hydrothermal scheduling lies in the optimization of the water resource usage through the maximization of the hydroelectric production and the minimization of the thermal plants operation. Its goal is to assure an economic and reliable load supply throughout the study stages. This problem can be characterized by exhibiting a complex nature, sinc
Publicado em: 2009
-
16. On cognition, adaptation and homeostasis : analysis and synthesis of bio-inspired computational tools applied to robot autonomous navigation / Sobre cognição, adaptação e homeostase : uma analise de ferramentas computacionais bioinspiradas aplicadas a navegação autonoma de robos
The objectives of this work are to study, develop and apply two bio-inspired computational tools in robot autonomous navigation. The first tool is represented by Learning Classifier Systems, using the strength-based and the accuracy-based models. Additionally, the rule evolution mechanisms and the final evolved populations are analyzed. The second tool is a
Publicado em: 2008
-
17. Frequency estimation in power system through adaptive filtering / Estimação da freqüência em sistemas elétricos de potência através de filtragem adaptativa
This work presents a method for frequency estimation in power systems using adaptive filters based in the algorithm of least mean square (LMS). The analysis of the power system is made through the conversion of the three-phase voltages in a complex signal with the application of alfabetatransform, whose complex form was directed to the algorithm of adaptive
Publicado em: 2007
-
18. "Simulations of 3D two-phase flows using adaptive methods and phase field models" / "Simulações de escoamentos tridimensionais bifásicos empregando métodos adaptativos e modelos de campo fase"
This is the first work that introduces 3D fully adaptive simulations for a phase field model of an incompressible fluid with matched densities and variable viscosity, known as Model H. Solving numerically the equations of this model in meshes locally refined with AMR technique, we simulate computationally tridimensional two-phase flows. Phase field models of
Publicado em: 2007
-
19. Organizações e portfolios de projetos sob a perspectiva da Teoria da Complexidade. / Organization and project portfolios in a complexity theory approach.
Projects and portfolios play a central role in attaining an organizations strategic objectives, particularly within the recent scenarios of huge social, economic and technological change. With the professionalization of Project Management (PM), various methods and techniques came into use to plan and control activities aiming at the fulfillment of anticipate
Publicado em: 2007
-
20. Schistosomal granuloma as a system adaptive complex. Application of fractal dimension in characterization of their geometric properties. / Granuloma esquistossomótico como um sistema adaptativo complexo. Aplicação da dimensão fractal na caracterização de suas propriedades geométricas.
Schistosomal granuloma AS A COMPLEX ADAPTIVE SYSTEM: APPLICATION OF FRACTAL DIMENSION IN THE CHARACTERIZATION OF PROPERTIES GEOMETRIC. Waldemiro de Souza Romagna. [Introduction]. The schistosomal granuloma is a compact, organized collection of migrating cells, which along with cells of the affected organ, arrange themselves in the midst of extracellular matr
Publicado em: 2007
-
21. Sobre equalizadores autodidatas de decisão realimentada aplicados a sistemas multiusuário
Due to the growing demand for mobile communications, adaptive equalizers play an important role for enhancing the efficiency of data transmission. In this scenario, the Decision Feedback Equalizer (DFE) stands out. It presents a favorable tradeoff between computational cost and efficient behavior, mainly when compared to Linear Transversal Equalizer. In this
Publicado em: 2007
-
22. Bioinspired computing systems : synthesis and application in computational intelligence and artificial homeostasis / Sistemas computacionais bio-inspirados : sintese e aplicação em inteligencia computacional e homeostase artificial
This work proposes a circumstantial classification for complex systems, including a unified description structure to be employed in the analysis and synthesis of biologically inspired computing metaphors. Considered as a branch of organized complex systems, these bio-inspired computing frameworks may be subdivided into computation intelligence systems and ar
Publicado em: 2005
-
23. DispersÃo e predaÃÃo de grandes sementes por Sciurus aestuans L. em fragmentos de floresta AtlÃntica montana no Estado do EspÃrito Santo, Brasil
The plantâdispersor interactions influence the adaptive values of plants and animals, acting directly on the reproductive characters of plant species and life histories of animal species. The fruvigory pattern influences the seed shadow patterns of plants, the predation rates by invertebrates and consequently the germination, seedling survival and adult rec
Publicado em: 2004
-
24. Um modelo de hipertexto para apoio ao ensino mediado pela Web / A hypertext model to support Web-mediated teaching
There is an increasing demand for hypermedia applications based on the WWW (World Wide Web), known as Web Information Systems (WIS). These applications present specific requirements in addition to those of traditional software systems, thus fostering the need for investigating suitable models to support their development. In particular, systems for Distance
Publicado em: 2003