- Systems theory
Systems theory is an
interdisciplinaryfield of scienceand the study of the nature of complex systems in nature, society, and science. More specificially, it is a framework by which one can analyze and/or describe any group of objects that work in concert to produce some result. This could be a single organism, any organization or society, or any electro-mechanical or informational artifact. Systems theory first originated in biology in the 1920s out of the need to explain the interrelatedness of organisms in ecosystems. [Lawrence S. Bale (1995). [http://narberthpa.com/Bale/lsbale_dop/cybernet.htm "Gregory Bateson, Cybernetics and the Social.Behavioral Sciences"] . Paper published in: "Cybernetics and Human Knowing: a Journal of Second Order Cybernetics and Cyber-Semiotics". Vol. 3 no. 1 1995 pp. 27-45.] As a technical and general academic area of study it predominantly refers to the science of systems that resulted from Bertalanffy's General System Theory (GST), among others, in initiating what became a project of systems research and practice. It was Margaret Meadand Gregory Batesonwho developed interdisciplinary perspectives in systems theory (such as positive and negative feedback in the social sciences).
Ideas from systems theory have grown with diversified areas, exemplified by the work of
Béla H. Bánáthy, ecological systems with Howard T. Odum, Eugene Odumand Fritjof Capra, organizational theoryand managementwith individuals such as Peter Senge, interdisciplinary study with areas like Human Resource Developmentfrom the work of Richard A. Swanson, and insights from educators such as Debora Hammond. As a transdisciplinary, interdisciplinary and multiperspectival domain, the area brings together principles and concepts from ontology, philosophy of science, physics, computer science, biology, and engineeringas well as geography, sociology, political science, psychotherapy(within family systems therapy) and economicsamong others. Systems theory thus serves as a bridge for interdisciplinary dialogue between autonomous areas of study as well as within the area of systems science itself.
In this respect, with the possibility of misinterpretations, Bertalanffy [ Bertalanffy (1950: 142)] believed a general theory of systems “should be an important regulative device in science,” to guard against superficial analogies that “are useless in science and harmful in their practical consequences.” Others remain closer to the direct systems concepts developed by the original theorists. For example, Ilya Prigogine, of
the Center for Complex Quantum Systemsat the University of Texas, Austin, has studied emergent properties, suggesting that they offer analogues for living systems. The theories of autopoiesisof Francisco Varelaand Humberto Maturanaare a further development in this field. Important names in contemporary systems science include Russell Ackoff, Béla H. Bánáthy, Anthony Stafford Beer, Peter Checkland, Robert L. Flood, Fritjof Capra, Michael C. Jackson, and Werner Ulrich, among others. With the modern foundations for a general theory of systems following the World Wars, Ervin Laszlo, in the preface for Bertalanffy's book "Perspectives on General System Theory", maintains that the translationof "general system theory" from German into English has "wroth a certain amount of Havoc" [(Laszlo 1974)] . The preface explains that the original concept of a general system theory was "Allgemeine Systemtheorie (or Lehre)," pointing out the fact that "Theorie" (or "Lehre") just as "Wissenschaft" (translated Scholarship), "has a much broader meaning in German than the closest English words ‘theory’ and ‘science'" [(Laszlo 1974)] . With these ideas referring to an organized body of science and "any systematically presented set of concepts, whether they are empirical, axiomatic, or philosophical," "Lehre" is associated with theory and science in the etymology of general systems, but also does not translate from the German very well; "teaching" is the closest equivalent [(Laszlo 1974)] . While many of the root meanings for the idea of a “general systems theory” might have been lost in the translation and manywho were led to believe that the systems theorists had articulated nothing but a pseudoscience, systems theory became a nomenclaturethat early investigators used to describe the interdependenceof relationships in organizationby defining a new way of thinking about science and scientific paradigms.
systemfrom this frame of referenceis composed of regularly interacting or interrelating groups of activities. For example, in noting the influence in organizational psychology as the field evolved from “an individually oriented industrial psychologyto a systems and developmentally oriented organizational psychology,” it was recognized that organizations are complex social systems; reducing the parts from the whole reduces the overall effectiveness of organizations [(Schein 1980: 4-11)] . This is at difference to conventional models that center on individuals, structures, departments and units separate in part from the whole instead of recognizing the interdependence between groups of individuals, structures and processes that enable an organization to function. Laszlo [ Laslo (1972: 14-15)] explains that the new systems view of organized complexity went "one step beyond the Newtonian view of organized simplicity" in reducing the parts from the whole, or in understanding the whole without relation to the parts. The relationship between organizations and their environments became recognized as the foremost source of complexity and interdependence. In most cases the whole has properties that cannot be known from analysis of the constituent elements in isolation. Béla H. Bánáthy, who argued - along with the founders of the systems society - that “the benefit of humankind” is the purpose of science, has made significant and far-reaching contributions to the area of systems theory. For the Primer Group at ISSS, Bánáthy defines a perspective that iterates this view:
The systems view is a world-view that is based on the discipline of SYSTEM INQUIRY. Central to systems inquiry is the concept of SYSTEM. In the most general sense, system means a configuration of parts connected and joined together by a web of relationships. The Primer group defines system as a family of relationships among the members acting as a whole. Bertalanffy defined system as "elements in standing relationship." [(Banathy 1997: ¶ 22)]
Similar ideas are found in learning theories that developed from the same fundamental concepts, emphasizing that understanding results from knowing concepts both in part and as a whole. In fact, Bertalanffy’s organismic psychology paralleled the learning theory of
Jean Piaget[(Bertalanffy 1968). ] Interdisciplinary perspectives are critical in breaking away from industrial agemodels and thinking where history is historyand math is mathsegregated from the artsand musicseparate from the sciencesand never the twain shall meet [(see Steiss 1967; Buckley, 1967)] . The influential contemporary work of Peter Senge[Peter Senge (2000: 27-49)] provides detailed discussion of the commonplace critique of educational systems grounded in conventional assumptions about learning, including the problems with fragmented knowledge and lack of holistic learning from the "machine-age thinking" that became a "model of school separated from daily life." It is in this way that systems theorists attempted to provide alternatives and an evolved ideation from orthodox theories with individuals such as Max Weber, Emile Durkheimin sociology and Frederick Winslow Taylorin scientific management, which were grounded in classical assumptions [(Bailey 1994: 3-8; see also Owens 2004)] . The theorists sought holistic methods by developing systems concepts that could be integrated with different areas.
The contradiction of
reductionismin conventional theory (which has as its subject a single part) is simply an example of changing assumptions. The emphasis with systems theory shifts from parts to the organization of parts, recognizing interactions of the parts are not "static" and constant but "dynamic” processes. Conventional closed systems were questioned with the development of open systems perspectives. The shift was from absoluteand universal authoritative principles and knowledge to relativeand general conceptualand perceptualknowledge [(Bailey 1994: 3-8)] , still in the tradition of theorists that sought to provide means in organizing human life. Meaning, the history of ideasthat preceded were rethought not lost. Mechanistic thinking was particularly critiqued, especially the industrial-age mechanistic metaphorof the mind from interpretationsof Newtonian mechanicsby Enlightenment philosophers and later psychologists that laid the foundations of modern organizational theory and management by the late 19th century [(Bailey 1994; Flood 1997; Checkland 1999; Laszlo 1972)] . Classical science had not been overthrown, but questions arose over core assumptions that historically influenced organized systems, within both social and technical sciences.
Whether considering the first systems of written communication with Phoenician
cuneiformto Mayan numerals, or the feats of engineering with the Egyptian pyramids, systems thinking in essence dates back to antiquity. Differentiated from Western rationalisttraditions of philosophy, C. West Churchman often identified with the I Chingas a systems approach sharing a frame of reference similar to pre-Socraticphilosophy and Heraclitus[(Hammond 2003: 12-13)] . Bertalanffy traced systems concepts to the philosophy of G.W. von Leibniz and Nicholas of Cusa’s "Coincidentia Oppositorum". While modern systems are considerably more complicated, today’s systems are embedded in history.
Systems theory as an area of study specifically developed following the World Wars from the work of
Ludwig von Bertalanffy, Anatol Rapoport, Kenneth E. Boulding, William Ross Ashby, Margaret Mead, Gregory Bateson, C. West Churchmanand others in the 1950s, specifically catalyzed by the Macy conferences. Cognizant of advances in science that questioned classical assumptions in the organizational sciences, Bertalanffy's idea to develop a theory of systems began as early as the interwar period, publishing "An Outline for General Systems Theory" in the "British Journal for the Philosophy of Science", Vol 1, No. 2, by 1950. Where assumptions in Western science from Greek thought with Platoand Aristotleto Newton’s " Principia" have historically influenced all areas from the hard to social sciences (see David Easton's seminal development of the " political system" as an analytical construct), the original theorists explored the implications of twentieth century advances in terms of systems.
complexity, self-organization, connectionismand adaptive systemshad already been studied in the 1940s and 1950s. In fields like cybernetics, researchers like Norbert Wiener, William Ross Ashby, John von Neumannand Heinz von Foersterexamined complex systems using mathematics. John von Neumanndiscovered cellular automataand self-reproducing systems, again with only pencil and paper. Aleksandr Lyapunovand Jules Henri Poincaréworked on the foundations of chaos theory without any computerat all. At the same time Howard T. Odum, the radiation ecologist, recognised that the study of general systems required a language that could depict energeticsand kineticsat any system scale. Odum developed a general systems, or Universal language, based on the circuit language of electronicsto fulfill this role, known as the Energy Systems Language. Between 1929-1951, Robert Maynard Hutchinsat the University of Chicagohad undertaken efforts to encourage innovation and interdisciplinary research in the social sciences, aided by the Ford Foundationwith the interdisciplinary Division of the Social Sciences established in 1931 (Hammond 2003: 5-9). Numerous scholars had been actively engaged in ideas before ( Tectologyof Alexander Bogdanovpublished in 1912-1917 is a remarkable example), but in 1937 Bertalanffy presented the general theory of systems for a conference at the University of Chicago.
The systems view was based on several fundamental ideas. First, all phenomena can be viewed as a web of relationships among elements, or a
system. Second, all systems, whether electrical, biological, or social, have common patterns, behaviors, and propertiesthat can be understood and used to develop greater insight into the behavior of complex phenomena and to move closer toward a unity of science. System philosophy, methodology and application are complementary to this science [(Laszlo 1974)] . By 1956, the Society for General Systems Research was established, renamed the International Society for Systems Science in 1988. The Cold War had its affects upon the research project for systems theory in ways that sorely disappointed many of the seminal theorists. Some began to recognize theories defined in association with systems theory had deviated from the initial General Systems Theory (GST) view (Hull 1970). The economist Kenneth Boulding, an early researcher in systems theory, had concerns over the manipulation of systems concepts. Boulding concluded from the effects of the Cold War that abuses of power always prove consequential and that systems theory might address such issues [(Hammond 2003: 229-233)] . Since the end of the Cold War, there has been a renewed interest in systems theory with efforts to strengthen an ethicalview.
Developments in system theories
General systems research and systems inquiry
Many early systems theorists aimed at finding a general systems theory that could explain all systems in all fields of science. The term goes back to Bertalanffy's book titled "General System Theory". von Bertalanffy's objective was to bring together under one heading the organismic science that he had observed in his work as a biologist. His desire was to use the word "system" to describe those principles which are common to systems in general. In GST, he writes:
...there exist models, principles, and laws that apply to generalized systems or their subclasses, irrespective of their particular kind, the nature of their component elements, and the relationships or "forces" between them. It seems legitimate to ask for a theory, not of systems of a more or less special kind, but of universal principles applying to systems in general. [(GST p.32)]
Ervin Laszlo [ [http://projects.isss.org/perspectives_on_general_system_theory perspectives_on_general_system_theory [ProjectsISSS ] ] in the preface of von Bertalanffy's book "Perspectives on General System Theory.." [von Bertalanffy, Ludwig, (1974) "Perspectives on General System Theory" Edited by Edgar Taschdjian. George Braziller, New York]
Thus when von Bertalanffy spoke of Allgemeine Systemtheorie it was consistent with his view that he was proposing a new perspective, a new way of doing science. It was not directly consistent with an interpretation often put on "general system theory," to wit, that it is a (scientific) "theory of general systems." To criticize it as such is to shoot at straw men. Von Bertalanffy opened up something much broader and of much greater significance than a single theory (which, as we now know, can always be falsified and has usually an ephemeral existence): he created a new paradigm for the development of theories.
Ludwig von Bertalanffy outlines systems inquiry into three major domains: Philosophy, the Science, and Technology. In his work with the Primer Group, Béla H. Bánáthy generalized the domains into four integratable domains of systemic inquiry:
ontology, epistemology, and axiologyof systems;
#Theory, a set of interrelated concepts and principles applying to all systems;
#Methodology, the set of models, strategies, methods, and tools that instrumentalize systems theory and philosophy; and
#Application, the application and interaction of the domains. These operate in a recursive relationship, he explained. Integrating Philosophy and Theory as Knowledge, and Method and Application as action, Systems Inquiry then is knowledgable action. [ [http://projects.isss.org/Main/SystemsInquiry main_systemsinquiry [ProjectsISSS ] ]
Cybernetics is the study of
feedbackand derived concepts such as communicationand control in living organisms, machines and organisations. Its focus is how anything (digital, mechanical or biological) processes information, reacts to information, and changes or can be changed to better accomplish the first two tasks.
The terms "systems theory" and "
cybernetics" have been widely used as synonyms. Some authors use the term "cybernetic" systems to denote a proper subset of the class of general systems, namely those systems that include feedbackloops. However Gordon Pask's differences of eternal interacting actor loops (that produce finite products) makes general systems a proper subset of cybernetics. According to Jackson (2000), Bertalanffy promoted an embryonic form of general system theory (GST) as early as the 1920s and 1930s but it was not until the early 1950s it became more widely known in scientific circles.
Threads of cybernetics began in the late 1800s that led toward the publishing of seminal works (eg., Wiener’s "Cybernetics" in 1946 and von Bertalanffy’s "General Systems Theory" in 1968). Cybernetics arose more from engineering fields and GST from biology. If anything it appears that although the two probably mutually influenced each other, cybernetics had the greater influence. Bertalanffy (1969) specifically makes the point of distinguishing between the areas in noting the influence of cybernetics: "Systems theory is frequently identified with cybernetics and control theory. This again is incorrect. Cybernetics as the theory of control mechanisms in technology and nature is founded on the concepts of information and feedback, but as part of a general theory of systems;” then reiterates: "the model is of wide application but should not be identified with 'systems theory' in general," and that "warning is necessary against its incautious expansion to fields for which its concepts are not made." (17-23). Jackson (2000) also claims Bertalanffy was informed by
Alexander Bogdanov’s three volume " Tectology" that was published in Russia between 1912 and 1917, and was translated into German in 1928. He also states it is clear to Gorelik (1975) that the “conceptual part” of general system theory (GST) had first been put in place by Bogdanov. The similar position is held by Mattessich (1978) and Capra (1996). Bertalanffy never even mentioned Bogdanov in his works, which Capra (1996) finds "surprising".
catastrophe theory, chaos theory and complexity theory have the common goal to explain complex systems that consist of a large number of mutually interacting and interrelated parts in terms of those interactions. Cellular automata (CA), neural networks (NN), artificial intelligence (AI), and artificial life(ALife) are related fields, but they do not try to describe general (universal) complex (singular) systems. The best context to compare the different "C"-Theories about complex systems is historical, which emphasizes different tools and methodologies, from pure mathematics in the beginning to pure computer science now. Since the beginning of chaos theory when Edward Lorenzaccidentally discovered a strange attractorwith his computer, computers have become an indispensable source of information. One could not imagine the study of complex systems without the use of computers today.
Complex adaptive systems
Complex adaptive systems are special cases of
complex systems. They are "complex" in that they are diverse and made up of multiple interconnected elements and "adaptive" in that they have the capacity to change and learn from experience. The term "complex adaptive systems" was coined at the interdisciplinary Santa Fe Institute(SFI), by John H. Holland, Murray Gell-Mannand others.
CAS ideas and models are essentially evolutionary, and they take ground in the modern biological views on adaptation and evolution. Accordingly, the theory of complex adaptive systems bridges developments of the system theory with the ideas of 'generalized
Darwinism', which suggests that Darwinian principles of evolution are capable to explain a range of complex material phenomena, from cosmic to social objects.
Applications of system theories
Living systems theory
Living systems theoryis an offshoot of Bertalanffy's general systems theory, created by James Grier Miller, which was intended to formalize the concept of "life". According to Miller's original conception as spelled out in his magnum opus "Living Systems", a "living system" must contain each of 20 "critical subsystems", which are defined by their functions and visible in numerous systems, from simple cells to organisms, countries, and societies. In "Living Systems" Miller provides a detailed look at a number of systems in order of increasing size, and identifies his subsystems in each.
James Grier Miller (1978) wrote a 1,102-page volume to present his living systems theory. He constructed a general theory of living systems by focusing on concrete systems—nonrandom accumulations of matter-energy in physical space-time organized into interacting, interrelated subsystems or components. Slightly revising the original model a dozen years later, he distinguished eight “nested” hierarchical levels in such complex structures. Each level is “nested” in the sense that each higher level contains the next lower level in a nested fashion.
The systems framework is also fundamental to
organizational theoryas organizations are complex dynamic goal-oriented processes. One of the early thinkers in the field was Alexander Bogdanov, who developed his Tectology, a theory widely considered a precursor of Bertalanffy's GST, aiming to model and design human organizations (see Mattessich 1978, Capra 1996). Kurt Lewinwas particularly influential in developing the systems perspective within organizational theory and coined the term "systems of ideology", from his frustration with behavioral psychologies that became an obstacle to sustainable work in psychology [(see Ash 1992: 198-207)] . Jay Forresterwith his work in dynamics and management alongside numerous theorists including Edgar Scheinthat followed in their tradition since the Civil Rights Era have also been influential.
The systems approach to organizations relies heavily upon achieving negative entropy through openness and
feedback. A systemic view on organizations is transdisciplinary and integrative. In other words, it transcends the perspectives of individual disciplines, integrating them on the basis of a common "code", or more exactly, on the basis of the formal apparatus provided by systems theory. The systems approach gives primacy to the interrelationships, not to the elements of the system. It is from these dynamic interrelationships that new properties of the system emerge. In recent years, " systems thinking" has been developed to provide techniques for studying systems in holistic ways to supplement traditional reductionistic methods. In this more recent tradition, systems theory in organizational studies is considered by some as a humanistic extension of the natural sciences.
oftware and computing
In the 1960s, systems theory was adopted by the post
John Von Neumanncomputing and information technology field and, in fact, formed the basis of structured analysisand structured design(see also Larry Constantine, Tom Demarcoand Ed Yourdon). It was also the basis for early software engineeringand computer-aided software engineeringprinciples.
By the 1970s, General Systems Theory (GST) was the fundamental underpinning of most commercial software design techniques, and by the 1980,
W. Vaughn Frickand Albert F. Case, Jr.had used GST to design the "missing link" transformation from system analysis (defining what's needed in a system) to system design (what's actually implemented) using the Yourdon/Demarco notation. These principles were incorporated into computer-aided software engineering tools delivered by Nastec Corporation, Transform Logic, Inc., KnowledgeWare (see Fran Tarkentonand James Martin), Texas Instruments, Arthur Andersen and ultimately IBM Corporation.
ociology and Sociocybernetics
Systems theory has also been developed within
sociology. An important figure in the sociological systems perspective as developed from GST is Walter Buckley (who from Bertalanffy's theory). Niklas Luhmann(see Luhmann 1994) is also predominant in the literatures for sociology and systems theory. Miller's living systems theorywas particularly influential in sociology from the time of the early systems movement. Models for equilibrium in systems analysis that contrasted classical views from Talcott Parsonsand George Homas were influential in integrating concepts with the general movement. With the renewed interest in systems theory on the rise since the 1990s, Bailey (1994) notes the concept of systems in sociology dates back to Auguste Comtein the 19th century, Herbert Spencerand Vilfredo Pareto, and that sociology was readying into its centennial as the new systems theory was emerging following the World Wars.
In sociology, members of Research Committee 51 of the International Sociological Association (which focuses on
sociocybernetics), have sought to identify the sociocybernetic feedback loops which, it is argued, primarily control the operation of society. On the basis of research largely conducted in the area of education, Raven (1995) has, for example, argued that it is these sociocybernetic processes which consistently undermine well intentioned public action and are currently heading our species, at an exponentially increasing rate, toward extinction. See sustainability. He suggests that an understanding of these systems processes will allow us to generate the kind of (non "common-sense") targeted interventions that are required for things to be otherwise - ie to halt the destruction of the planet.
System Dynamics was founded in the late 1950s by
Jay W. Forresterof the MIT Sloan School of Managementwith the establishment of the MIT System Dynamics Group. At that time, he began applying what he had learned about systems during his work in electrical engineeringto everyday kinds of systems.Determining the exact date of the founding of the field of system dynamics is difficult and involves a certain degree of arbitrariness. Jay W. Forrester joined the faculty of the Sloan School at MIT in 1956, where he then developed what is now System Dynamics. The first published article by Jay W. Forrester in the Harvard Business Review on "Industrial Dynamics", was published in 1958. The members of System Dynamics Society have chosen 1957 to mark the occasion as it is the year in which the work leading to that article, which described the dynamics of a manufacturing supply chain, was done.
As an aspect of systems theory, "
system dynamics" is a method for understanding the dynamic behavior of complex systems. The basis of the method is the recognition that the structure of any system — the many circular, interlocking, sometimes time-delayed relationships among its components — is often just as important in determining its behavior as the individual components themselves. Examples are chaos theoryand social dynamics. It is also claimed that, because there are often properties-of-the-whole which cannot be found among the properties-of-the-elements, in some cases the behavior of the whole cannot be explained in terms of the behavior of the parts. An example is the properties of these letters which when considered together can give rise to meaning which does not exist in the letters by themselves. This further explains the integrationof tools, like language, as a more parsimonious processin the human application of easiest path adaptability through interconnected systems.
Systems Engineeringis an interdisciplinaryapproach and means for enabling the realization and deployment of successful systems. It can be viewed as the application of engineering techniques to the engineering of systems, as well as the application of a systems approach to engineering efforts. [cite book | last = Thomé | first = Bernhard | authorlink = | coauthors = | year = 1993 | title = Systems Engineering: Principles and Practice of Computer-based Systems Engineering | publisher = John Wiley & Sons | location = Chichester| id = ISBN 0-471-93552-2] Systems Engineering integrates other disciplines and specialty groups into a team effort, forming a structured development process that proceeds from concept to production to operation and disposal. Systems Engineering considers both the business and the technical needs of all customers, with the goal of providing a quality product that meets the user needs. [cite web|author= INCOSE|url=http://www.incose.org/practice/whatissystemseng.aspx|title=What is Systems Engineering|accessdate=2006-11-26]
Systems psychology is a branch of
psychologythat studies human behaviourand experiencein complex systems. It is inspired by systems theory and systems thinking, and based on the theoretical work of Roger Barker, Gregory Bateson, Humberto Maturanaand others. It is an approach in psychology, in which groups and individuals, are considered as systemsin homeostasis. Systems psychology includes the domain of engineering psychology, but in addition is more concerned with societal systems and with the study of motivatial, affective, cognitive and group behavior than is engineering psychology. [Lester R. Bittel and Muriel Albers Bittel (1978), "Encyclopedia of Professional Management", McGraw-Hill, ISBN 0070054789, p.498.] In systems psychology characteristics of organizational behaviourfor example individual needs, rewards, expectations, and attributes of the people interacting with the systemsare considered in the processin order to create an effective system. [Michael M. Behrmann (1984), "Handbook of Microcomputers in Special Education". College Hill Press. ISBN 093301435X. Page 212.]
Glossary of systems theory
List of types of systems theory
Social rule system theory
System of systems
Systems theory in archaeology
Systems theory in political science
Systematics - study of multi-term systems
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Peter Senge(1990). The Fifth Discipline. The art and practice of the learning organization. New York: Doubleday.
* Senge, P., Ed. (2000). "Schools That Learn: A Fifth Discipline Fieldbook for Educators, Parents, and Everyone Who Cares About Education". New York: Doubleday Dell Publishing Group.
* Steiss, A.W. (1967). "Urban Systems Dynamics". Toronto: Lexington Books.
Gerald Weinberg. (1975). "An Introduction to General Systems Thinking" (1975 ed., Wiley-Interscience) (2001 ed. Dorset House).
* Wiener, N. (1967). The human use of human beings. Cybernetics and Society. New York: Avon.
* [http://pespmc1.vub.ac.be/DEFAULT.html Principia Cybernetica Web]
* [http://projects.isss.org/Main/Primer International Society for the System Sciences]
* [http://www.acm.org/sigois/auto/Main.html Autopoiesis at the ACM website]
* [http://pespmc1.vub.ac.be/SYSTHEOR.html Systems theory]
* [http://www.systemique.levillage.org Le Village Systémique]
* [http://www.sysc.pdx.edu/ Portland State University Systems Science Ph.D. Program]
* [http://www.necsi.org/ New England Complex Systems Institute]
* [http://www.hcs.ucla.edu/ UCLA Human Complex Systems Program]
* [http://systems.open.ac.uk/ Systems Department, Open University]
* [http://esd.mit.edu/staging/academic/ms_faqs.html Engineering and Systems Division] , MIT
* [http://www.cscs.umich.edu/education/education.html Center for the Study of Complex Systems] , University of Michigan
* [http://cmol.nbi.dk/ Center for Models of Life, Niels Bohr Institute, Copenhagen]
Un-annotated external links:
* [http://multispective.wordpress.com Humane Systems Design] (semi-annotated)
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