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System dynamics

System dynamics
Dynamic stock and flow diagram of model New product adoption (model from article by John Sterman 2001) System dynamics is an approach to understanding the behaviour of complex systems over time. It deals with internal feedback loops and time delays that affect the behaviour of the entire system.[1] What makes using system dynamics different from other approaches to studying complex systems is the use of feedback loops and stocks and flows. These elements help describe how even seemingly simple systems display baffling nonlinearity. Overview[edit] System dynamics (SD) is a methodology and mathematical modeling technique for framing, understanding, and discussing complex issues and problems. Convenient GUI system dynamics software developed into user friendly versions by the 1990s and have been applied to diverse systems. System dynamics is an aspect of systems theory as a method for understanding the dynamic behavior of complex systems. History[edit] Topics in systems dynamics[edit]

http://en.wikipedia.org/wiki/System_dynamics

Related:  Ludwig von BertalanffySystem Dynamics & ArchetypesSystems ThinkingInteresting Stuff

Ludwig von Bertalanffy Karl Ludwig von Bertalanffy (September 19, 1901, Atzgersdorf near Vienna – June 12, 1972, Buffalo, New York) was an Austrian-born biologist known as one of the founders of general systems theory (GST). GST is an interdisciplinary practice that describes systems with interacting components, applicable to biology, cybernetics, and other fields. Bertalanffy proposed that the classical laws of thermodynamics applied to closed systems, but not necessarily to "open systems," such as living things. His mathematical model of an organism's growth over time, published in 1934, is still in use today. Von Bertalanffy grew up in Austria and subsequently worked in Vienna, London, Canada and the USA.

Feedback "...'feedback' exists between two parts when each affects the other. Systems Approach To Management by Bertalanffy Systems Approach To Management The word System is taken from a Greek language which means to bring together or to combine. A system is a set of inter-related parts, which work together to achieve certain goals. Image Credits © Pablo Alfieri. Ludwig von Bertalanffy is called the Father of the Systems Approach. According to Ludwig von Bertalanffy, Systems thinking Impression of systems thinking about society[1] Systems thinking involves the use of various techniques to study systems of many kinds. In nature, examples of the objects of systems thinking include ecosystems - in which various elements (such as air, water, movement, plants, and animals) interact. In organizations, systems consist of people, structures, and processes that operate together to make an organization "healthy" or "unhealthy".[citation needed]

Systems thinking Impression of systems thinking about society[1] A system is composed of interrelated parts or components (structures) that cooperate in processes (behavior). Natural systems include biological entities, ocean currents, the climate, the solar system and ecosystems. Designed systems include airplanes, software systems, technologies and machines of all kinds, government agencies and business systems. Systems Thinking has at least some roots in the General System Theory that was advanced by Ludwig von Bertalanffy in the 1940s and furthered by Ross Ashby in the 1950s. The term Systems Thinking is sometimes used as a broad catch-all heading for the process of understanding how systems behave, interact with their environment and influence each other.

Success to the Successful A Success to the Successful structure consists of two reinforcing structures which interact in such a way as for create a single reinforcing structure. Consider a situation where there are two project managers, Jane and Tom, responsible for managing similar projects. Their manager, Sarah, has a fixed amount of resources which she allocates to their projects. Initially both projects are progressing equally well. Then, for some reason, Sarah chooses to allocate more resources to Jane's project than to Tom's. Systemic vs. Systematic When was the last time you thought about why your business does what it does? Every business exists to produce a certain result — a service or a product — but have you ever asked yourself, "Why do we do it this way?" That question is the essence of strategic thinking.

Complexity Rising: From Human Beings to Human Civilization, a Complexity Profile Since time immemorial humans have complained that life is becoming more complex, but it is only now that we have a hope to analyze formally and verify this lament. This article analyzes the human social environment using the "complexity profile," a mathematical tool for characterizing the collective behavior of a system. The analysis is used to justify the qualitative observation that complexity of existence has increased and is increasing. The increase in complexity is directly related to sweeping changes in the structure and dynamics of human civilization—the increasing interdependence of the global economic and social system and the instabilities of dictatorships, communism and corporate hierarchies. Our complex social environment is consistent with identifying global human civilization as an organism capable of complex behavior that protects its components (us) and which should be capable of responding effectively to complex environmental demands.

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