[Theory of systems generation and pediatric clinical neurology].
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Child↗
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Results for “Systems Theory”
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[The Brånemark System: from theory to practice. A report on the basic course combining direct and prosthetic surgery, 22 and 23 April 1994, CHUV, Lausanne].
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Dental Implants↗
[Stress: postulates, analysis in terms of the general theory of functional systems].
Further developing of the general theory of stress, put forward by Selye, the theory of functional systems treats stress, of any origin, as a systemic response of the organism to a conflict situation. The theory of functional systems regards, along with the action of stressors, the conflict behavioral situation in which the subjects are deprived of a possibility to satisfy their main requirements, i. e. attainment of useful adaptation results, as the leading cause of stress. It is the conflict behavioral situation that gives rise to the primary reaction of the organism, viz. psychoemotional stress. Cerebral mechanisms of emotional stress in terms of the theory of functional systems are primary in the pathogenesis of psychomotor disorders in stress. The specific neurochemical changes in the limbico-reticular structures of the brain, certain neurochemical disintegration of the neuronal elements, constituting the limbico-reticular structures of the brain, underlie emotional stress. Our experiments showed that predisposition to emotional stress is accounted for by the decreased level of catecholamines and certain oligopeptides such as substance PI (?), beta-endorphins, peptide, causing delta-sleep in the limbico-reticular structures of the brain.(ABSTRACT TRUNCATED AT 250 WORDS)
Animals↗
The nature of living systems.
Living systems theory (LST) is concerned with eight levels of living systems, each of which is composed of 20 critical subsystems that carry out essential life processes. As a result of a continuous biosocial evolution involving progressive fray-out of components, the more recently developed levels in this hierarchy have become very complex. A brief summary of LST is presented in this article. Following this is a detailed analysis of current knowledge about the timer, which we have recently included in our list of subsystems.
Animals↗
Aligning the stars: Using systems thinking to (re)design Canadian healthcare.
It has become commonplace to refer to a "Canadian healthcare system," implying some monolithic system of prevention and care, yet failing to acknowledge its various subsystems, some performing well and some not. This article argues that a more nuanced understanding of healthcare systems, based on the principles of Systems Theory, provides a useful lens to understand our current system(s) as well as those that are possible, the principles of design and the levers available to leaders and policymakers as we implement our healthcare strategies for Canada.
Canada↗
Theory and practice in speech-language pathology: a review of systemic principles.
Linear, cause-effect reasoning has dominated the training and clinical practice of speech-language pathology for many years. Recently, however, the roles of many speech-language clinicians and the contexts in which they provide their clinical services have been changing, and traditional ways of viewing clinical work no longer seem to apply. This article applies principles of systems theory to such changes and advocates an integration of these principles with those of traditional, linear views to achieve a better understanding of this evolution in the clinical practice of speech-language pathology.
Child, Preschool↗
A neuropsychological theory of multiple systems in category learning.
A neuropsychological theory is proposed that assumes category learning is a competition between separate verbal and implicit (i.e., procedural-learning-based) categorization systems. The theory assumes that the caudate nucleus is an important component of the implicit system and that the anterior cingulate and prefrontal cortices are critical to the verbal system. In addition to making predictions for normal human adults, the theory makes specific predictions for children, elderly people, and patients suffering from Parkinson's disease, Huntington's disease, major depression, amnesia, or lesions of the prefrontal cortex. Two separate formal descriptions of the theory are also provided. One describes trial-by-trial learning, and the other describes global dynamics. The theory is tested on published neuropsychological data and on category learning data with normal adults.
Adult↗
[Schizophrenia and systems therapy].
The notion of Systems Therapy subsumes two different although closely interrelated issues. On the one hand Systems Therapy implies a systemic Eco-Anthropology based upon Systems Science, i.e., a Systems Theory of man in and with his environment. On the other hand Systems Therapy is a theory and a practice of the therapeutic transformation of human systems, based upon a systemic Eco-Anthropology. Three basic concepts of Systems Therapy are presented here: the concept of the organism as a system, the concept of the eco-system, and the concept of the transactional field with its basic organization and its corresponding transactional patterns. These concepts are illustrated by many examples taken from case histories of schizophrenic patients and systems. The status quo of the scientific epistemic process in the field of schizophrenia is evaluated from the perspective of Systems Therapy in 1983. With rare exceptions English notions are not translated into German in order to avoid terminological errors and lack of precision.
Arousal↗
Automaticity and the ACT* theory.
An explanation of automaticity within the framework of the Adaptive Control of Thought (ACT*) production system theory (Anderson, 1983, 1987) is presented. There is no automaticity mechanism per se in ACT*. This is as we would expect it to be. It would be the exception rather than the rule that we would find in a scientific theory mechanisms that directly correspond to natural language concepts. The critical question is whether ACT* can give an account of the phenomena associated with the term automaticity. This article is structured as follows: First, I will try to identify the phenomena of automaticity to be explained, then give a brief overview of the ACT* theory, and finally explain how these phenomena of automaticity are to be understood in terms of the theory.
Attention↗
[Theory of functional systems and integrative physiology].
The paper postulates that the theory of functional systems proposed by P. K. Anokhin has given an impetus to the understanding of the body's integrative activities. The functional systems are shown to be units of the activities. Individual functional systems in their characteristic processes of self-organization and self-regulation, hierarchic, multi parametric and consecutive interactions of the body's functional systems have integrative properties. The theory of functional systems have disclosed many unknown brain integrative properties: the specificity of ascending activating influences of subcortical formations on the cortex, various patterns of excitation convergence on cortical neurons, the specific features of chemical postsynaptic processes that are characteristic of each functional system. Particular emphasis is laid on the informational mechanisms of the integrative activities of functional systems.
Brain↗
Binary N-step Markov chains and long-range correlated systems.
A theory of systems with long-range correlations based on the consideration of binary N-step Markov chains is developed. In our model, the conditional probability that the ith symbol in the chain equals zero (or unity) is a linear function of the number of unities among the preceding N symbols. The correlation and distribution functions as well as the variance of number of symbols in the words of arbitrary length L are obtained analytically and numerically. If the persistent correlations are not extremely strong, the variance is shown to be nonlinearly dependent on L. A self-similarity of the studied stochastic process is revealed. The applicability of the developed theory to the coarse-grained written and DNA texts is discussed.
Bacillus subtilis↗
[The systemic integration of human functions: new approaches to the diagnosis and correction of stressor states].
The paper provides evidence for a new principle of the systemic organization of human functions. Instead of the concepts of man as a set of organs which are bound up with nervous and humoral regulation, the author considers on the basis of the functional systems theory the human body as a total combination of various interacting systems of different levels of organizations, each yields body's useful adaptive responses on the principles of multiparametric and successive interactions with other functional systems. The paper reveals the principles of interaction of functional systems in the whole organism. Problems in the evaluation of human physiological functions in the place of work, systemic principles of detection of stress states and their rehabilitation are considered in the context of functional systems.
Adaptation, Physiological↗
Is Bowen theory valid? A review of basic research.
In the last 15 years, a substantial number of studies have tested the theoretical validity of Bowen family systems theory. A review of this basic research provided empirical support for the relationship between differentiation and chronic anxiety, marital satisfaction, and psychological distress. Bowen's assumption that couples with the same level of differentiation marry was not supported. His specific theories of sibling position and triangulation also received little empirical support. Research on multigenerational transmission has generally ignored Bowen's theoretical perspective, and more research needs to test Bowen's claim that his theory is universal. In addition, researchers still need to examine the effect of differentiation on child functioning, physical health problems, and adaptability.
Adult↗
Evaluating Bhola's Configurations Theory of Planned Change.
In Bhola's Configurations Theory of Planned Change, the CLER Structure resides in the midst of an epistemic triangle comprised of systems theory, dialectical thinking and constructivism. Our evaluation process compared the theory with descriptive statements in the Tiffany/Lutjens Planned Change Theory Evaluation Scale and found that Bhola's Theory resonates well with nursing's needs. This suggests its application to nursing's clinical, education, administrative, and research settings.
Models, Nursing↗
Two levelled design of an unified paediatric health care encounter.
The appearance of the new computer-based information technology has initiated the possibility of medical staff performing their everyday routine activities more effectively and efficiently. But to be able to use information technology as successfully as possible, unified and integrated medical encounters are urgently needed especially in the paediatrics field. The tendency to unify the medical encounter is relatively old and had already begun in the 'pre-computer era'. There were some, unpublished, attempts to unify the child's medical encounter during the last years in our country. Unfortunately they were all unsuccessful for various reasons, but it is our deep belief that the common factor for their lack of success was the inappropriateness of the methodology being used and the neglect of many system theory principles especially soft-system ones. It is the objective of this paper to briefly introduce MetaMet and its application in the design of the UNCLE (UNified Child's heaLth carE Encounter). MetaMet is an information system design approach, based on two-levelled design and its aim is to overcome at least some problems concerned with software crisis and to enable more successful design of (medical) information systems.
Adolescent↗
A systems view of health promotion.
This article presents a systems view of health promotion and education. We offer an overview of systems theory, including the hierarchy of systems, the relationship between a system and its environment, and agent-host interactions. A host is any system that may face disruption from an environmental agent or perturbation from an adjacent system. A system is healthy to the extent it can prevent, parry, or dissipate the effects of disruptions and perturbations. Systems can collaborate and cooperate to enhance their capacity to respond adaptively to potential threats from agents. This offers new insights into the three levels of prevention, and into health promotion practice. Health promotion is any effort to influence host systems in ways that will enhance their capacity to prevent, resist, dissipate or respond adaptively to potential threats from their environment. We also offer an account of the balance between stability (or lack of) in the environment and the importance of flexibility enabling systems to adapt to change. We examine high-level wellness, a function of knowledge, learning, skills and stored-up resources that enhance adaptability, flexibility and timeliness in a system's response to anticipated and unanticipated potentially disruptive environmental agents. Finally we draw implications for health promotion and education practice. The health promoter / educator is a helpful agent seeking to influence systems at various levels in the hierarchy of systems in ways that will enhance their capacity to prevent, resist, dissipate or respond adaptively to potential disruptive agents in their environments.
Health Education↗
Motivating pharmacy employees.
Concepts from theories of motivation are used to suggest methods for improving the motivational environment of hospital pharmacy departments. Motivation--the state of being stimulated to take action to achieve a goal or to satisfy a need--comes from within individuals, but hospital pharmacy managers can facilitate motivation by structuring the work environment so that it satisfies employees' needs. Concepts from several theories of motivation are discussed, including McGregor's theory X and theory Y assumptions, Maslow's hierarchy of needs theory, Herzberg's motivation hygiene theory, and Massey's value system theory. Concepts from the Japanese style of management that can be used to facilitate motivation, such as quality circles, also are described. The autocratic, participative, and laissez faire styles of leadership are discussed in the context of the motivation theories, and suggested applications of theoretical concepts to practice are presented.
Emotions↗
Graduate and post-graduate medical education with the synchronous systems model.
Behavioral sciences have an important new role, particularly in medicine and prevention (Revans, 1990; Starr, 1982). A decade ago when the ideology of medical care shifted from a biomedical to a biopsychosocial model, behavioral and social factors ascended in importance in modern health concerns (see Engel, 1977). Now, a living systems model called Synchronous Systems (Jasnoski & Schwartz, 1985) incorporates environmental (including the social and physical) along with physiological and psychological factors into its structure. The environment has been gaining recognition as an important determinant in health, disease, and wellness (Daniel, 1990; Demick & Wapner, 1990; Lawton, 1990; Stokols, 1990). The phrase "Synchronous Systems" departs from the traditional linear thought patterns to depict contemporaneous occurrences. Synchrony refers to simultaneous experiences or events, with an emphasis on healthy, congruent process and function. Positive, beneficial process in human functioning emphasizes prevention as found in public health efforts but refers also to dysfunctional and recuperative foundation of medicine as a departure from the healthy norm. These process and functional dynamics in the Synchronous Systems Model derive conceptually from systems theory, specifically from control and cybernetic theories (Cannon, 1932; Weiner, 1948). The dynamic complexity of health in the whole human system, which also incorporates the environment, requires synthesis of knowledge from the biological, social, behavioral, and ecological sciences. This article provides the fundamentals of the structural and functional synthesis possible in the Synchronous Systems Model. Its direct application to multidisciplinary research is also presented along with its specific application to medical education, policy, research, and service delivery.
Curriculum↗