Download or read book Cooperative Effects in Stochastic Models written by Gurami Shalvovich T︠S︡it︠s︡iashvili and published by Nova Publishers. This book was released on 2005 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: The monograph is devoted to an investigation of co-operative effects in stochastic models. It includes original results of the authors in the last decade. The main object of the monograph is an analysis of an influence of a stochastic model structure on its characteristics. Problems of a co-operation and a decomposition are actual in a solution of a lot of concrete problems. These problems are: a parallelisation of algorithms and programs, a modelling of supercomputers, computer networks, systems of mobile telephones catastrophes in complex systems, a design and an improvement of technological and economical processes etc. The co-operative effects create a source of significant dependencies between complex system characteristics under large random disturbances. To analyse these effects is necessary to create special methods based on structural analysis of multi-element stochastic models together with majoral asymptotic bounds of these models characteristics. At the same time it demands to develop new approaches to a processing of statistical data and a skill in an usage of the probability theory limit theorems and related asymptotic series and bounds. A choice of the monograph material is defined as by initial applied problems so by probability methods of their solution. Conditionally the monograph may be divided into two parts. First of them contains four sections devoted to a finding of the co-operative effects and to a development of new related analytical and numerical methods. This part has presumably methodological character and creates a theoretical base of an investigation of applied stochastic systems. Second part contains three sections devoted to a solution of different applied problems. It has some interesting substantial results.
Download or read book Cooperative Effects in Stochastic Models written by and published by . This book was released on 2005 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stochastic Modeling of Cellular Cooperation written by Erin Nicole Urwin and published by . This book was released on 2010 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cooperation in biology is a well-known enigma. It is in an individual cell's best interest to behave selfishly, but it is in a collection of cells' best interest if each cell cooperates. We explore aspects of cooperative behavior in the context of cellular systems. We concentrate on spatial aspects of cooperation and study how spatial restrictions effect colony survival. We examine three stochastic models through numerical simulation along with analytic methods. In our first model, we explore the impact of cheaters on a cooperative network of cells. We observe that strict spatial constraints impede harmful effects of cheaters. We note that a similar result was previously observed, by M. Nowak et al, albeit in a different system [13, 12]. We explored an application of our modeling approach to cooperating yeast specifically engineered to demonstrate effects of cooperation [14]. We explored the effects of the presence of cheaters in such a system and found that the viability of colonies depended non-monotonically on the ability of cells to cooperate. This suggests an avenue for further biological experiments. In our last model, we explore cooperative aspects of evolution. We ask the question, "is it more advantageous for cells to acquire each mutation sequentially or to have different cells acquire different mutations and then have them cooperate?" Traditional multi-stage carcinogenesis models depict cancer evolving as a sequence of mutations within each cell. A possible advantage to this evolutionary strategy is that cells are self-sufficient. Possible disadvantageous are that mutations take a long time to occur, and so evolution is very slow. If cells achieve different mutations and then cooperate to form a cancerous phenotype, then they are able to evolve faster. However, they are reliant on others. If one cell type is lost, the whole colony could suffer and so the colony is more prone to stochastic extinction. We found that cooperation speeds up evolution significantly. We also found that the presence of cheaters speeds up evolution even more. This result was surprising because in other contexts cheaters decrease the longevity of a colony.
Download or read book From Complex to Simple Interdisciplinary Stochastic Models written by Dan A. Mazilu and published by Morgan & Claypool. This book was released on 2018-08-22 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents simple interdisciplinary stochastic models meant as a gentle introduction to the field of non-equilibrium statistical physics. It focuses on the analysis of two-state models with cooperative effects and explores a variety of mathematical techniques to solve the master equations that govern these models. The models discussed are at the confluence of nanophysics, biology, mathematics and the social science, and they provide a pedagogical path toward understanding the complex dynamics of particle self-assembly with the tools of statistical physics.
Download or read book Cooperative Stochastic Effects in Globally Coupled Interacting Neurons Stochastic Resonance written by and published by . This book was released on 1992 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: We consider a network of N nonlinearly coupled neuron-like elements subject to Langevin noise and a weak periodic modulation. Through the adiabatic elimination procedure, the dynamics of a single neuron is obtained from the coupled stochastic differential equations describing the network. The bifurcation properties of this 'reduced neuron' model an discussed, together with cooperative stochastic effects (e.g., stochastic resonance) that result from the presence of the modulation ... Neural models, Neural networks, Stochastic resonance, Single neurons.
Download or read book Statistical Physics And Thermodynamics Of Nonlinear Nonequilibrium Systems written by Wolfgang Muschik and published by World Scientific. This book was released on 1993-03-27 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: In these proceedings, it is shown that thermodynamical concepts are not ‘old fashioned’ but still are most useful at the frontiers of modern science. Among the contributors are well-known experts such as Andresen (Copenhagen), Eu (Montreal), Groβmann (Marburg), Kawasaki (Fuhuoha), Maugin (Paris), Nicolis (Bruxelles) and Szépfalusy (Budapest). The subject covers a wide field including: recent developments in phenomenological thermodynamics, statistical foundation of thermodynamical concepts, thermodynamical concepts in nonlinear dynamics, applications to nonlinear (neural) networks, stochastic theory and transition processes.
Download or read book Stochastic Automata and Co operative Effects written by STANFORD UNIV CALIF DEPT OF STATISTICS. and published by . This book was released on 1971 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: A process is considered in which identical stochastic automata can form natural bonds, their internal state transition matrices then being affected by the external bonds currently existing. The clustering process of automata thus defined shows a criticality effect, in that infinite clusters first acquire positive probability when automaton density rho exceeds a certain value. The aim of the paper is to discover whether the expected distribution over automaton states changes discontinuously as the process passes through criticality. It is shown that, for the model of this paper, there is no discontinuity in either the distribution or its derivative with respect to rho as rho passes through the critical value. (Author).
Download or read book American Book Publishing Record written by and published by . This book was released on 2003 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ICANN 93 written by Stan Gielen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1116 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the proceedings of the International Confer ence on Artificial Neural Networks which was held between September 13 and 16 in Amsterdam. It is the third in a series which started two years ago in Helsinki and which last year took place in Brighton. Thanks to the European Neural Network Society, ICANN has emerged as the leading conference on neural networks in Europe. Neural networks is a field of research which has enjoyed a rapid expansion and great popularity in both the academic and industrial research communities. The field is motivated by the commonly held belief that applications in the fields of artificial intelligence and robotics will benefit from a good understanding of the neural information processing properties that underlie human intelligence. Essential aspects of neural information processing are highly parallel execution of com putation, integration of memory and process, and robustness against fluctuations. It is believed that intelligent skills, such as perception, motion and cognition, can be easier realized in neuro-computers than in a conventional computing paradigm. This requires active research in neurobiology to extract com putational principles from experimental neurobiological find ings, in physics and mathematics to study the relation between architecture and function in neural networks, and in cognitive science to study higher brain functions, such as language and reasoning. Neural networks technology has already lead to practical methods that solve real problems in a wide area of industrial applications. The clusters on robotics and applications contain sessions on various sub-topics in these fields.
Download or read book Fluctuations and Order written by Mark Millonas and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume that you have before you is the result of a growing realization that fluctuations in nonequilibrium systems playa much more important role than was 1 first believed. It has become clear that in nonequilibrium systems noise plays an active, one might even say a creative, role in processes involving self-organization, pattern formation, and coherence, as well as in biological information processing, energy transduction, and functionality. Now is not the time for a comprehensive summary of these new ideas, and I am certainly not the person to attempt such a thing. Rather, this short introductory essay (and the book as a whole) is an attempt to describe where we are at present and how the viewpoint that has evolved in the last decade or so differs from those of past decades. Fluctuations arise either because of the coupling of a particular system to an ex ternal unknown or "unknowable" system or because the particular description we are using is only a coarse-grained description which on some level is an approxima tion. We describe the unpredictable and random deviations from our deterministic equations of motion as noise or fluctuations. A nonequilibrium system is one in which there is a net flow of energy. There are, as I see it, four basic levels of sophistication, or paradigms, con cerning fluctuations in nature. At the lowest level of sophistication, there is an implicit assumption that noise is negligible: the deterministic paradigm.
Download or read book Chromatin written by Ralf Blossey and published by CRC Press. This book was released on 2017-08-04 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: An invaluable resource for computational biologists and researchers from other fields seeking an introduction to the topic, Chromatin: Structure, Dynamics, Regulation offers comprehensive coverage of this dynamic interdisciplinary field, from the basics to the latest research. Computational methods from statistical physics and bioinformatics are detailed whenever possible without lengthy recourse to specialized techniques.
Download or read book Cooperative Models of Stochastic Growth written by Marcelo Rocha Costa and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Models of Science Dynamics written by Andrea Scharnhorst and published by Springer Science & Business Media. This book was released on 2012-01-23 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Models of Science Dynamics aims to capture the structure and evolution of science, the emerging arena in which scholars, science and the communication of science become themselves the basic objects of research. In order to capture the essence of phenomena as diverse as the structure of co-authorship networks or the evolution of citation diffusion patterns, such models can be represented by conceptual models based on historical and ethnographic observations, mathematical descriptions of measurable phenomena, or computational algorithms. Despite its evident importance, the mathematical modeling of science still lacks a unifying framework and a comprehensive study of the topic. This volume fills this gap, reviewing and describing major threads in the mathematical modeling of science dynamics for a wider academic and professional audience. The model classes presented cover stochastic and statistical models, system-dynamics approaches, agent-based simulations, population-dynamics models, and complex-network models. The book comprises an introduction and a foundational chapter that defines and operationalizes terminology used in the study of science, as well as a review chapter that discusses the history of mathematical approaches to modeling science from an algorithmic-historiography perspective. It concludes with a survey of remaining challenges for future science models and their relevance for science and science policy.
Download or read book Cooperative Stochastic Differential Games written by David W.K. Yeung and published by Springer Science & Business Media. This book was released on 2006-05-11 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical Optimization presents a comprehensive and up-to-date description of the most effective methods in continuous optimization. It responds to the growing interest in optimization in engineering, science, and business by focusing on the methods that are best suited to practical problems. For this new edition the book has been thoroughly updated throughout. There are new chapters on nonlinear interior methods and derivative-free methods for optimization, both of which are used widely in practice and the focus of much current research. Because of the emphasis on practical methods, as well as the extensive illustrations and exercises, the book is accessible to a wide audience. It can be used as a graduate text in engineering, operations research, mathematics, computer science, and business. It also serves as a handbook for researchers and practitioners in the field. The authors have strived to produce a text that is pleasant to read, informative, and rigorous - one that reveals both the beautiful nature of the discipline and its practical side.
Download or read book Cooperative Effects in Four Organic Free Radicals written by Alan Shane Edelstein and published by . This book was released on 1963 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Origins written by Karl H. Pribram and published by Routledge. This book was released on 2018-10-24 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: The result of the second Appalachian conference on neurodynamics, this volume focuses on the problem of "order," its origins, evolution, and future. Central to this concern lies our understanding of time. Both classical and quantum physics have developed their conceptions within a framework of time symmetry. Divided into four major sections, this book: * provides refreshingly new approaches to the problem of the evolution of order, indicating the directions that need to be taken in subsequent conferences which will address learning and memory more directly; * addresses the issue of how information becomes transmitted in the nervous system; * shows how patterns are constructed at the synaptodendritic level of processing and how such pattern construction relates to image processing; and * deals with the control operations which operate on image processing to construct entities such as visual and auditory objects such as phonemes. The aim of the conference was to bring together professionals to exchange ideas -- some were fairly worked out; others were in their infancy. As a result, one of the most valuable aspects of the conference is that it fostered lasting interactive relationships among these leading researchers.
Download or read book Modeling and Analysis of Stochastic Networks written by Gurami Tsitsiashvili and published by LAP Lambert Academic Publishing. This book was released on 2010-06 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph contains authors results of a few last years in a modeling and an analysis of stochastic networks. Considered problems origin mainly in reliability and risk analysis and their applications are actual now. The monograph concerns: an estimation of queueing networks parameters, an analysis of cooperative effects in queuing networks, a construction of algorithms for a calculation of random networks reliability and ruin probabilities in classical risk models. These problems are solved by some special asymptotic and algebraic methods which allow to construct sufficiently fast and efficiency numerical algorithms. This monograph may be suggested to researchers and post graduate students who deal with queuing, reliability and risk theories and their applications.
