General Systems Theory Flashcards
(31 cards)
Ludwig von bertalanffy
believed that a common framework could allow scientists from different disciplines to communicate better and build upon each others work
General systems theory
explains how discrete variables affect the whole, and how the whole affects each part
based on the idea there are universal principles of organization governing systems
system
goal directed unit made up of interdependent parts that interact and endure over time
structure of a system
arrangement and organization among the parts of the system
function of a system
to convert or process energy, information, or other materials into a product or outcome for use within the system or outside the system or both
hierarchy of systems
describes the universe in which a system resides and needs to be examined over time in order to understand the system; cannot function in a vacuum and each higher level unit contains lower-level systems
target or focal system
system being studied at that particular time
suprasystem
larger environmental systems of which the focal system is a part
subsystem
smaller subunits or subcomponents of the focal system
boundaries
lines of demarcation between a system and environment
Represent the interface or point of contact between the system and its subsystems and suprasystems
Boundaries must be permeable; allows for interchange of energy between the system and its environment
Examples: healthy, limited non-existent, loose or porous, and rigid
types of systems
open
closed
open system
interacts with the environment
capable of growth, development and adaptation
interaction is necessary for survival
closed system
isolated from the environment
fixed, automatic, relationships among system components
little opportunity for growth
principles of open systems
All systems respond as a whole
Parts of the system are interconnected
Ripple effect
Nonsummativity
cause and effects are interchangeable
ripple effect
change in one part of the system affects the remainder of the system
nonsummativity
the whole is greater than the sum of its parts
No part acts without consequences for other parts
Holism: Impacts not only the system, but subsystem and environment
input
boundaries allow the exchange of information, energy and resources into the system
energy and raw material that is transformed by the system
resources used in the environment to maintain system and produce outputs
ex: information, money, raw materials
boundary control
the degree of exchange regulates the amount and type of input from the environment at any time enabling the system to maintain equilibrium
throughput
process used by the system to convert raw materials or energy (inputs) from the environment into products or services that are usable by either the system itself or the environment
Examples: critical thinking, physical examination of patients, planning, and decision making
output
product or service which results from the system’s throughput or processing of technical, social, financial, or human input
Products which an open system releases into the environment
Can re-enter the system in a new form as input
feedback
the output that is available to the system in ways that allow it to maintain a steady state of functioning
System adjusts internally by modification of the subsystems and externally by controlling its boundaries
feedback loop
path along which information can be traced from one point in a system, through one or more other parts of the system or its environment, and back to ts point of origin
positive feedback loop: promotes change
negative feedback loop: linked to homeostatic system; it provides information that returns the system to some preset level and reduce deviation causes to the system
energy
e fuel that allows the system to meet its demands
Amount is governed by the rate of utilization of the energy within the system itself
entropy and negentropy
entropy
process of energy depletion and disorganization that moves the system toward chaos
