The relevance of nonlinear dynamics to calcium metabolism led us to reevaluate the role of Ca-regulating hormones in Ca homeostasis. We suggest that, firstly, the main Ca metabolic functions in rat-bone and gut - are organized as dynamic entities able to generate various temporal expressions, including self-oscillating patterns and, secondly, Ca homeostasis results from interaction between both metabolic and hormonal oscillators. Following this schema, a major role for the hormonal system, with its circadian pattern, could be to act directly on (...) metabolic functions or indirectly through feeding behaviour, in order to optimize, coordinate and synchronize the Ca fluxes at ECF level. (shrink)

"_The Moment of Complexity_ is a profoundly original work. In remarkable and insightful ways, Mark Taylor traces an entirely new way to view the evolution of our culture, detailing how information theory and the scientific concept of complexity can be used to understand recent developments in the arts and humanities. This book will ultimately be seen as a classic."-John L. Casti, Santa Fe Institute, author of _Gödel: A Life of Logic, the Mind, and Mathematics_ The science of complexity accounts for (...) that inscrutable mix of chaos and order that governs our natural world. Complexity explains how networks emerge and function, how species organize into ecosystems, how stars form into galaxies, and how just a few sequences of DNA can account for so many different life forms. Recently, the idea of complexity has taken the worlds of business and politics by storm. The concept is used to account for phenomena as varied as the behavior of the stock market, the response of voting populations, and the effects of risk management. Even Disney has used complexity theory to manage crowd control at its theme parks. Given the startling development of new information technologies, we now live in a moment of unprecedented complexity, an era in which change occurs faster than our ability to comprehend it. With _The Moment of Complexity_, Mark C. Taylor offers a timely map for this unfamiliar terrain opening in our midst, unfolding an original philosophy through a remarkable synthesis of science and culture. According to Taylor, complexity is not just a breakthrough scientific concept, but the defining quality of the post-Cold War era. The flux of digital currents swirling around us, he argues, has created a new network culture with its own distinctive logic and dynamic. Drawing on resources from information theory and evolutionary biology, Taylor explains the operation of complex adaptive systems in social and cultural processes and captures a whole new zeitgeist in the making. To appreciate the significance of our emerging network culture, he claims, we need not only to understand contemporary scientific and technological transformations, but also to explore the subtle influences of art, architecture, philosophy, religion, and higher education. _The Moment of Complexity_, then, is a remarkable work of cultural analysis on a scale rarely seen today. To follow its trajectory is to learn how we arrived at this critical moment in our culture, and to know where we might head in the twenty-first century. (shrink)

La psychologie a toujours traité le comportement et l’expérience comme étant enchâssés dans un flux temporel unidimensionnel, « le courant du comportement » dans lequel les événements et les actions occupent des intervalles de temps qui ne se chevauchent pas. Pourtant, une analyse phénoménologique révèle que la structure de nos vies est bien plus riche et intéressante. En utilisant la notion de « quasidécomposabilité » de Herbert Simon, je décris cette structure comme un assemblage d’épisodes quasi-indépendants se réalisant de (...) façon concurrente, et de nature asynchrone. Il s’agit d’une « structure profonde» des vies contrairement à la conception courante qui conçoit les vies comme « plates » Psychology has always treated behavior and experience as embedded in a unidimensional flow in time, the "stream of behavior." This means that events and actions occupy non-overlapping time-intervals in this stream. Nevertheless a phenomenological analysis reveals that the structure of lives is richer and far more interesting. Using Herb Simon's notion of near-decomposability, I describe the structure of lives as a composite of nearly independent strands that run concurrently, and are asynchronous. This is a "deep structure"' of lives in contrast to the current conception, which conceives of lives as "flat." . (shrink)

Does thinking have a history? If there are no necessarily changeless structures to be found in things and in our inquiry into them, then what knowledge of the world and ourselves is possible? In this boldly original and elegantly written study, Joseph Margolis argues for a radically historicized view of history that treats it as both a real process and a narrative account, each a product of continual change. Developing his argument through discussions of such influential philosophers of history and (...) the natural sciences as Vico, Danto, Collingwood, Habermas, Hempel, Popper, Putnam, and Gadamer, he provides a coherent theory of flux and invariance that resolves several deep puzzles regarding human nature and understanding. While maintaining a thorough command of Anglo-American philosophy, Margolis challenges many of its most cherished assumptions and demonstrates the sense in which history and interpretation are one and the same. Exploring one of the master themes of this century, his book offers a novel theory of the human condition whose conclusions and concerns seem certain to inform philosophy in the next century as well. (shrink)

Late ancient and early medieval narratives often depict dreaming as a vertical and hierarchical process of influence that has its starting point in a higher entity and ends with the human being. This model of explanation seems to take a more horizontal approach with the advent of a new natural philosophy and medical works from Arabic milieu that put the psychosomatic processes of the human being into perspective. The general purpose of this paper is to assess to which extent Albert (...) the Great’s consideration of dreams can be taken as an example of this turning point. Specifically, it tries to show how his dream theory is articulated in De homine. The main hypothesis is that the Dominican friar advocated a materialistic account of dreams, in which the process of dream formation is explain as a flux of bodiness caused by a change in the thermal behavior of the body. (shrink)

Does thinking have a history? If there are no necessarily changeless structures to be found in things and in our inquiry into them, then what knowledge of the world and ourselves is possible? In this boldly original and elegantly written study, Joseph Margolis argues for a radically historicized view of history that treats it as both a real process and a narrative account, each a product of continual change. Developing his argument through discussions of such influential philosophers of history and (...) the natural sciences as Vico, Danto, Collingwood, Habermas, Hempel, Popper, Putnam, and Gadamer, he provides a coherent theory of flux and invariance that resolves several deep puzzles regarding human nature and understanding. While maintaining a thorough command of Anglo-American philosophy, Margolis challenges many of its most cherished assumptions and demonstrates the sense in which history and interpretation are one and the same. Exploring one of the master themes of this century, his book offers a novel theory of the human condition whose conclusions and concerns seem certain to inform philosophy in the next century as well. (shrink)

There are a number of considerations, including ethical and clinical or diagnostic factors, in utilizing the diagnosis of posttraumatic stress disorder in criminal proceedings. The reliability and validity of the diagnosis may be questioned. Legal precedent may consider extant diagnostic criteria for PTSD and comorbid diagnoses. However, these diagnostic criteria are often in flux considering new research findings. For example, the introduction of the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders, published by the American Psychiatric (...) Association, includes some changes in the PTSD diagnostic criteria. How will this affect interpretation of past legal judgments? Moreover, PTSD has significant psychiatric comorbidity, e.g., substance abuse, which in itself may influence violent behavior and its consequences. Some of these comorbid diagnoses also have changes in their diagnostic criteria. The introduction of biological tests in the assessment of PTSD will likely facilitate more objective diagnosis. (shrink)

This text addresses the problems of complex systems in understanding natural phenomena and the behaviour of systems related to human activity, from a science and humanities perspective. It discusses molecular behaviour and structures, and offers examples of ecological and environmental modelling.

At the time of his death in May 1961, Maurice Merleau-Ponty held the chair of Philosophy at the College de France. Together with Jean-Paul Sartre and Simone de Beauvoir, he was cofounder of the successful and influential review Les Temps Modernes. However, after Merleau-Ponty's two studies of Marxist theory and practice (Humanisme et Terreur and Les Aventures de la Dialectique), he alienated both orthodox Marxists and "mandarins of the left" such as Sartre and de Beauvoir. Perhaps his most lasting contribution (...) to the interpretation of human existence was his formulation of a positive philosophical approach to psychology the foundations of which were clearly outlined in The Structure of Behavior and later more fully developed in Phenomenology of Perception. (shrink)

The author is primarily concerned with the explanation of behavior in regard to (1) the mecanical model, (2) the effects of physical-organic processes on behavior, (3) the lack of understanding between philosophers and psychologists as to sufficient conditions for predicting a behavioral event, (4) conditions leading to expalantions of behavior that could predict behavior exclusive of any antecedent psychological behavior, and (5) variations of the mechanical-model introducing differing sorts of explanation. (staff).

Higher education and the institution of the university exist in time, their essential nature now continually subject to change; change in students, in knowledge, in structure and in their own communities and those service. The nature of time in all the contemporary work on the university has been largely overlooked. This is an important omission and Universities in the Flux of Time has gathered leading academics whose contributions to the volume raise a debate as to the influence and use (...) of time in the university. They do this in an exploration of how these changes are perceived in higher education and how these affect its temporality from local, national and global perspectives. The book opens new spaces for the development of the university and civic society. The book develops an interdisciplinary understanding of the temporal issues of engaging with the past, present and future of higher education and its institutions, through consideration of the increased speed demanded for the production of able students and innovative research, to the accountability pressures from central governments and commerce. Reflecting on these issues in the higher education sector, Universities in the Flux of Time is split into three parts, with each one addressing time and its multiple relationships with the university: - Past, Present and Future - Knowledge and Time - Living with Time This volume will provide essential reading for those on Higher Education Studies courses as well as a wider audience of managers, practitioners, policy makers, academics and students and from many disciplinary perspectives including sociology, organisation studies, social psychology and the philosophy of education. (shrink)

This book presents a thorough overview of a model of human functioning based on the idea that behavior is goal-directed and regulated by feedback control processes. It describes feedback processes and their application to behavior, considers goals and the idea that goals are organized hierarchically, examines affect as deriving from a different kind of feedback process, and analyzes how success expectancies influence whether people keep trying to attain goals or disengage. Later sections consider a series of emerging themes, (...) including dynamic systems as a model for shifting among goals, catastrophe theory as a model for persistence, and the question of whether behavior is controlled or instead 'emerges'. Three chapters consider the implications of these various ideas for understanding maladaptive behavior, and the closing chapter asks whether goals are a necessity of life. Throughout, theory is presented in the context of diverse issues that link the theory to other literatures. (shrink)

Causal explanations of behavior must distinguish two kinds of cause. There are triggering causes, the events or conditions that come before the effect and are followed regularly by the effect, and structuring causes, events that cause a triggering cause to produce its effect. Moving the mouse is the triggering cause of cursor movement; hardware and programming conditions are the structuring causes of cursor movement. I use this distinction to show how representational facts can be structuring causes of behavior (...) even though biological events trigger the behavior. (shrink)

Every description contains within it a qualifier that allows us to avoid the problem of descriptive regress, and thus allows us to use the description for various purposes. Descriptive regress occurs because no one description can be understood without referring to further descriptions, which themselves require unpacking by reference to further descriptions ad infinitum. There are no fundamental descriptions no descriptions that attain and keep some privileged ontological status. The qualifier works by invoking the normal circumstances in which the description (...) obtains. It is impossible to foresee and describe in advance all the circumstances that would not be normal and that would reveal to us when the description could not obtain. It is our common sense the sense we develop as members of communities, and a sense sometimes narrowed and specialized in certain forms of life of what set of normal circumstances are implied into the description that allows us to use descriptions for various purposes (e.g. for describing circumstances in which some normative consequence should follow if the description obtains). This theory of descriptions is particularly relevant to the analysis of the role of descriptions of behavior and behavioral concepts in law. Law, in order to enable the regulation and evaluation of human behavior, cannot do without behavioral foundations criteria for evaluation of behavior are always based on certain descriptions of behavior and behavioral concepts. The theory of descriptions developed explains how descriptions of behavior function, namely, their utility relies on the legal community's common sense of the qualifiers attaching to descriptions of behavior. But that theory also has a reformative agenda: we should not think that any one description or any one behavioral concept such as that of intentionality can do all the work for us, in every area of the law, and in respect of every single social phenomenon. We need, in other words, to rethink the criteria for the evaluation of behavior on the basis of this theory of descriptions: i.e. on both the power and the limitations of descriptions of behavior. (shrink)

For the last century, economic analysis has been wedded to the idea of equilibrium, in spite of the evident fact that most economic relationships are in flux. The theory of transformational growth in this work replaces equilibrium with history. The role of the market is not to allocate resources, but to generate innovations, which are 'selected' by competition in an evolutionary process. These innovations in turn change the way markets work and how they adjust, thus creating new problems and (...) new kinds of pressures to innovate. Different historical periods can be distinguished with a new one perhaps on the horizon. In each a distinctive style of technology prevails, associated with corresponding institutions and patterns of market behavior. The core relationships provide the foundations for a theory of monetary circulation, which makes possible a revised Keynesian approach, based on Classical foundations. (shrink)

1. Introduction. One major concern in cognitive psychology is explaining cognitively motivated behavior. However, attempts to specify the nature of the behavior that psychology is to explain have proved to be somewhat controversial. The aim of this paper is to conduct a preliminary investigation into the kinds of behavior psychology is concerned with.

This book makes available five classic studies of the organisation of behaviour in face-to-face interaction. It includes Adam Kendon's well-known study of gaze-direction in interaction, his study of greetings, of the interactional functions of facial expression and of the spatial organisation of naturally occurring interaction, as recorded by means of film or videotape. They represent some of the best work undertaken within the 'natural history' tradition of interaction studies, as originally formulated in the work of Bateson, Birdwhistell and Goffman. Chapter (...) 2, written especially for this new book, provides an historical and theoretical discussion of this tradition, and a new final chapter takes up the theme of the organisation of attention in interaction. The introduction provides details of the circumstances of how each paper came to be written. Each of the papers reprinted is accompanied by a short postscript, placing the work in the context of more recent research. Several of the papers presented in this volume, although widely referred to, have long been difficult to obtain. Their republication will be warmly welcomed by all students and teachers who are concerned with face-to-face interaction. (shrink)

Sciences able to identify appropriate analytical units for their domain, their natural kinds, have tended to be more progressive. In the biological sciences, evolutionary natural kinds are adaptations that can be identified by their common history of selection for some function. Human brains are the product of an evolutionary history of selection for component systems which produced behaviours that gave adaptive advantage to their hosts. These structures, behaviour production systems, are the natural kinds that psychology seeks. We argue these can (...) be identified deductively by classing behaviour first according to its level of behavioural control. Early animals in our lineage used only reactive production, Vertebrates evolved motivation, and later Primates developed executive control. Behaviour can also be classified by the type of evolutionary benefit it bestows: it can deliver either immediate benefits (food, gametes), improvements in the individual’s position with respect to the world (resource access, social status), or improvements in the ability to secure future benefits (knowledge, skill). Combining history and function implies the existence of seven types of behaviour production systems in human brains responsible for reflexive, instinctual, exploratory, driven, emotional, playful and planned behaviour. Discovering scientifically valid categories of behaviour can provide a fundamental taxonomy and common language for understanding, predicting and changing behaviour, and a way of discovering the organs in the brain––its natural kinds––that are responsible for behaviour. (shrink)

We investigate a system of two species exploiting a common resource. We consider both abiotic (i.e. with a constant resource supply rate) and biotic (i.e. with resource reproduction and self-limitation) resources. We are interested in the asymmetric competition where a given consumer is the locally superior resource exploiter (LSE) and the other is the locally inferior resource exploiter (LIE). They also interact directly via interference competition in the sense that LIE individuals can use two opposite strategies to compete with LSE (...) individuals: we assume, in the first case, that LIE uses an avoiding strategy, i.e. LIE individuals go to a non-competition patch to avoids competition with LSE individuals, and in the second one, LIE uses an aggressive strategy, i.e. being very aggressive so that LSE individuals have to go to a non-competition patch. We further assume that there is no resource in the non-competition patch so that individuals have to come back to the competition patch for their maintenance, and the migration process acts on a fast time scale in comparison with demography and competition processes. The models show that being aggressive is efficient for LIE’s survival and even provoke global extinction of the LSE and this result does not depend on the nature of resource. (shrink)

The purpose of this paper is to set forth a sense in which programs can and do explain behavior, and to distinguish from this a number of senses in which they do not. Once we are tolerably clear concerning the sort of explanatory strategy being employed, two rather interesting facts emerge; (1) though it is true that programs are "internally represented," this fact has no explanatory interest beyond the mere fact that the program is executed; (2) programs which are (...) couched in information processing terms may have an explanatory interest for a given range of behavior which is independent of physiological explanations of the same range of behavior. (shrink)

In two recent articles and an earlier book Fred Dretske appeals to a distinction between triggering and structuring causes with the aim of establishing that psychological explanations of behavior differ from non-psychological ones. He concludes that intentional human behavior is triggered by electro-chemical events but structured by representational facts. In this paper I argue that while this underrated causalist position is considerably more persuasive than the standard causalist alternative, Dretske’s account fails to provide us with a coherent analysis (...) of intentional action and its explanation. (shrink)