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Topic: Physical systems


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In the News (Mon 17 Jun 19)

  
  Physical system - Wikipedia, the free encyclopedia
A physical system is a system that is comprised of matter and energy, which we can learn about using the tools of physics.
The complexity of a physical system is equal to the probability of its being in a particular state vector.
In a physical system, a lower probability state vector is equivalent to a higher complexity.
en.wikipedia.org /wiki/Physical_system   (280 words)

  
 System - Wikipedia, the free encyclopedia
System (from the Latin (systēma), and this from the Greek σύστημα (sustēma)) is an assemblage of entity/objects, real or abstract, comprising a whole with each and every component/element interacting or related to at least one other component/element.
They depend on the universal properties of systems of systems and are the domain of the practical interest and continuous research.
Systems engineering is also a generalized theoretical branch of the different engineering approaches and paradigms.
en.wikipedia.org /wiki/Systems   (542 words)

  
 Hexapedia - System (via CobWeb/3.1 planetlab-1.cs.princeton.edu)   (Site not responding. Last check: 2007-10-20)
Depending on the type of system, a system can often be distinguished from individual machines, elements or processes of that system by the number, arrangements and complexity of those elements.
Conceptual systems generally exist to aid in the accomplishment of specific goals or may be used to model physical systems.
System can also be used referring to a framework, be it software or hardware, designed to allow software to run, see platform.
www.hexafind.com.cob-web.org:8888 /encyclopedia/system   (1105 words)

  
 Physical Systems - 3 hours, Southeast Missouri State University
The laws of physics are the astronomer's most important tools, and the student will develop a qualitative understanding of the law of gravity, the nature of light, and the structure of the atom.
Spacecraft exploration of the solar system, the life cycles of stars, the origin and eventual fate of the Universe, and the possibility of extraterrestrial life are just a few of the topics which will be addressed in the course.
The lecture and the laboratory are one course.
www.semo.edu /ustudies/handbook/physical.htm   (2963 words)

  
 Physical Symbol Systems - Title
The focus is on the physical structure of the simulated insect agent, and on the artificial nervous system that underlies its dynamics of interaction.
System generated error is required when system implicit anticipations of the courses and outcomes of interactions cannot be assured.
Complex open systems, especially complexities involving selections among alternatives for the activity of the system, can contribute toward or harm the continued existence of an open system via contributions toward or harm to the environmental conditions or system-environmental relationships upon which the existence of the system is dependent.
www.lehigh.edu /~mhb0/aiforcogs7.html   (19270 words)

  
 F.E.Cellier - Physical Systems Modeling
Physics, however, is essentially acausal (Cellier et al., 1995).
There is no physical experiment in the world that could distinguish whether I drove my car into a tree, or whether it was the tree that drove itself into my car.
In order to maintain the physical conditions necessary for life to be sustained (temperature, pressure, humidity, CO2 contents in the air, to mention just the most important ones), Biosphere 2 contains a very complex air circulation system.
www.ece.arizona.edu /~cellier/psml.html   (1361 words)

  
 Origins of Randomness in Physical Systems
When the evolution of a system is unstable, so that perturbations grow, any randomness introduced through initial and boundary conditions is transmitted or amplified with time, and eventually affects many components of the system [1].
Characteristic of such systems is the generation of self-similar patterns, containing sequences that are invariant under blocking or scaling transformations.
Many systems are expected to be computationally irreducible, so that the outcome of their evolution can be found essentially only by direct simulation, and no computational short cuts are possible [25].
www.stephenwolfram.com /publications/articles/physics/85-origins/2/text.html   (1918 words)

  
 PHYSICAL security systems
PHYSICAL security: SEI is the AE of Record and Gerald Spencer, P.E. is the MEP Engineer of Record (EOR) for security systems for detention facilities, secure communications facilities, banks, space flight power and control systems, warehouses and retail stores.
The system at the Mine Warfare Center at Ingleside, TX, consisted of a remote exterior door control, closed circuit TV door monitoring and controlled access to classified data processing/simulation areas.
The building will have a pre-treated outside air system that will provide absolute control of the maximum relative humidity in the building except when the exterior doors are open for extended lengths of time.
www.spencerae.com /physical_security_systems.htm   (1344 words)

  
 Amazon.com: 21st Century U.S. Army Physical Security Field Manual: Books: Department of the Defense   (Site not responding. Last check: 2007-10-20)
Physical security must integrate the various capabilities of joint, multinational, and interagency operations in pursuit of a seamless connection between the strategic, operational, and tactical levels of war.
Physical security must also address an expanded range of threats that embraces not only traditional threat components of war, but also nontraditional threats generated by guerrillas, terrorists, criminals, and natural or man-made disasters.
Physical security is a central component of force protection and provides an integrated venue to express support for operations.
www.amazon.com /Century-Physical-Security-Field-Manual/dp/1931828598   (947 words)

  
 RatJed.com | Articles | Systems | Physical Systems
There are two kinds of physical systems: physical systems created of, or occurring from PS (PP) and PS created of, or occurring from conceptual systems (PC).
Physical objects and systems can only be defined relative to other PS and objects (and ultimately the universe itself).
Physical systems are hard to define and some schools of thought (such as: Zen, Taoism and Buddhism) even consider such definitions to be purely conceptual.
ratjed.com /index.php?ps   (438 words)

  
 E12: Linear Physical Systems Analysis
It builds on the mathematical techniques learned in E 11 and applies them to a broad range of linear systems including those in the mechanical, thermal, fluid, and electromechanical domains.
The 2nd order system's response to an initial offset condition was captured from real life by a computerized vision recognition system that tracked colored pieces of cloth attached at the elbow and the wrist.
Then, using discrete and integrated components, the analog simulator circuit was constructed on breadboards, and verified using a function generator to provide the road surface as input, and the output was observed using an oscilloscope.
www.sccs.swarthmore.edu /users/06/adem/engin/e12   (772 words)

  
 The Collapse of Astral and Physical Systems
There are illusions within the illusions and even though the "normal" illusions of the astral worlds are fracturing, on the surface, unbeknownst to the majority of the inhabitants of the astral world; the signs of fracturing have been covered up by other illusions of normality so that, for all intents and purposes, everything appears "normal".
This is because the systems in the astral world are created and run by the very beings who sponsor and control the systems in the physical world.
As all the systems in the physical universe and the astral world falter, Darkness will attempt to mesmerize the population with a multitude of new illusions.
www.xeeatwelve.com /articles/collapse_systems.html   (5202 words)

  
 ASME : Dynamic Systems & Control Division - About DSCD
It encompasses all aspects of the modeling, design, and control of physical systems involving forces, motions, the dynamics and control of mechanical, chemical, biological, and human-related systems, plus transportation, energy, robotics, manufacturing, processing, environmental, computational, and man-machine systems.
The mission of the Division is to provide a national and international forum to: evaluate, discuss, analyze, and publish new technical results in the field; stimulate and encourage research and education innovations; enhance manpower in research and engineering education in dynamic systems and control; and lead in setting directions for the field in the future.
The Division has actively developed and broadened its scope since its organization in 1943 from instruments and regulators, to automatic control, to coverage of all aspects of the modeling, design, and control of physical systems that involve forces, motions, and/or the flow of energy or material.
divisions.asme.org /dscd   (267 words)

  
 Physical Chemistry & Chemical Physics
Physical chemistry focuses on understanding the physical basis of chemical phenomena.
Physical chemistry provides the fundamental scientific tools to investigate systems of interest in a wide range of disciplines, including engineering and biology.
Understanding and predicting the behavior of these systems is of interest for engineers (plastics, fibers, and other viscoelastic materials) as well as for biologists for whom complex systems of interest include proteins, nucleic acids, and protein-protein aggregates such as cellular filaments.
darkwing.uoregon.edu /~chem/pchem.html   (360 words)

  
 RatJed.com | Articles | Systems
The universe is comprised of physical systems which are comprised of objects (which in turn are comprised of systems, ad infinitum).
It is a physical system consisting of rays of light passing though many drops of water which are suspended in air.
A physical system (PS) is comprised of matter and energy.
ratjed.com /?systems   (378 words)

  
 Geography Standards - Xpeditions @ nationalgeographic.com   (Site not responding. Last check: 2007-10-20)
Physical systems and environmental characteristics do not, by themselves determine the pattern of human activity.
In modern times humans have used technology as a means of reducing the potential effect of physical systems on human activity.
It is essential that they be able to translate an understanding of the physical processes and patterns that shape Earth’s surface into a picture of that surface as a potential home for people.
www.nationalgeographic.com /xpeditions/standards/15/index.html   (631 words)

  
 S&C Power Systems Services - Physical Design
The physical design for a typical substation project requires an investigation of field conditions, application of design standards to the site-specific conditions, and continued engineering analysis and guidance.
In developing of the physical design, SandC applies the customer’s available design and CAD standards as well as the appropriate national standards.
Development of the physical design is continually supported by engineering analysis and guidance.
www.sandc.com /services/PSS-DE_Physical.asp   (241 words)

  
 Physical Systems
Diebold designs and implements a wide range of physical security solutions, which complement integrated security systems.
A 2.5 foot by 6 foot loop is typical for the detection of passenger cars and pickups.
An Automatic Vehicle Identification system requires an individually encoded ID "tag" to be placed on each vehicle.
www.diebold.com /nasasec/enterprise/product05.htm   (492 words)

  
 10 CFR 73.26 Transportation physical protection systems, subsystems, components, and procedures.
(a) A transportation physical protection system established pursuant to the general performance objectives and requirements of § 73.20 and performance capability requirements of § 73.25 shall include, but are not necessarily limited to, the measures specified in paragraphs (b) through (l) of this section.
Corrective action procedures and compensatory measures shall be developed and employed to assure that the effectiveness of the physical protection system is not reduced by any single failure or other contingencies affecting the operation of the physical protection related equipment or structures.
The review must include an audit of transportation security procedures and practices, an evaluation of the effectiveness of the transportation physical protection system, an audit of the transportation physical protection system testing and maintenance program, and an audit of commitments established for response by local law enforcement authorities.
www.nrc.gov /reading-rm/doc-collections/cfr/part073/part073-0026.html   (3191 words)

  
 McREL : Mid-continent for Education and Learning, Content Knowledge Standards and Benchmark Database
Knows how communities benefit from the physical environment (e.g., people make their living by farming on fertile land, fishing in local water, working in mines; the community is a port located on a natural harbor, a tourist center located in a scenic or historic area, an industrial center with good access to natural resources)
Knows the ways in which human activities are constrained by the physical environment (e.g., effects of weather, climate and land forms on agriculture, recreational activities, availability of water, expansion of settlement)
Knows changes in the physical environment that have reduced the capacity of the environment to support human activity (e.g., the drought-plagued Sahel, the depleted rain forests of central Africa, the Great Plains Dust Bowl, the impact of the economic exploitation of Siberia's resources on a fragile sub-Arctic environment)
www.mcrel.org /compendium/standardDetails.asp?subjectID=8&standardID=15   (532 words)

  
 Private Investigator | Physical Security Systems Handbook | Michael Khairallah | Investigative books   (Site not responding. Last check: 2007-10-20)
The Security System Design and Implementation Guide is a practical reference written to assist the security professional in clearly identifying what systems are required to meet security needs as defined by a threat analysis and vulnerability assessment.
Once the required systems are determined, the chapters following present how to assemble and evaluate bids for the acquisition of the required systems in a manner that will meet the most rigorous standards established for competitive bidding.
It is intended to fill voids left by the currently approved reference material to perform implementation of systems suggested in the existing reference texts.
www.pimagazine.com /books/physical_security_systems.html   (402 words)

  
 TechOnline | Automating Analog Electronic Designs for Complex Physical Systems   (Site not responding. Last check: 2007-10-20)
In the case of a complex system, you must obtain mathematical models that characterize the behavior of different subsystems, each at its own level, and move to a common representation level.
We can then simulate the system and use the simulation results to translate the specifications from the electronic portion to a physical synthesis of the system.
It is much more reliable to perform a joint simulation of the electronic system which we intend to build together with its environment as opposed to a simulation of only the electronic part of the system.
www.techonline.com /community/tech_group/analog/14921   (1218 words)

  
 Physical Systems
The dynamics of the four basic components of Earths physical systems; the atmosphere, biosphere, lithosphere, and hydrosphere
Describe the physical processes (e.g., erosion, folding and faulting, volcanism) that produce distictive landforms (e.g., specific types of mountains, such as buttes and mesas, block mountains or horsts, ridge-and-valley sytstems)
Describe the effects of both physical and human changes on ecosystems (e.g., the disruption of energy flows and chemical cycles and the reduction of species diversity)
www.hawaii.edu /hga/Standard/phys912.htm   (730 words)

  
 Standard 15 - Physical Systems Effects on Human Systems
Another aspect of vegetation’s influence on human systems is the seasonal nature of vegetation growth.
This is one of the main reasons why systems of shifting cultivation or field rotation have been so prominent in many parts of the continent.
While physical systems impact human societies, they are also shaped by human actions.
www.uni.edu /gai/Nigeria/Background/Standard15.html   (3495 words)

  
 Food Physical Systems (11:400:419)   (Site not responding. Last check: 2007-10-20)
Course Overview: This is a course in the physical chemistry of foods; it is an investigation of how the chemical composition and molecular structure of specific foods and food ingredients determines their macroscopic physical properties, chemical reactivity, interactions with other foods, and response to specific processing operations such as heating, freezing, drying, and mixing.
Since a full coverage of food physical chemistry is impossible in one semester, only selected topics will be covered.
Academic Integrity: All students are expected and required to be familiar with the rules and regulations of Rutgers University dealing with academic integrity and issues of cheating and/or plagiarism of intellectual material from either printed or electronic sources.
foodsci.rutgers.edu /UG_courses_synopses/FoodPhysicalSystem419.htm   (322 words)

  
 PHYSICAL SYSTEMS
Physical processes shape Earth’s surface and interact with plant and animal life to create, sustain, and modify ecosystems.
The components of Earth’s physical systems: the atmosphere, lithosphere, hydrosphere, and biosphere
Describe the physical environment of the student’s own region and the physical processes that act on it (e.g., weather, tectonic forces, wave action, freezing and thawing, gravity, soil-building processes)
www.hawaii.edu /hga/Standard/geostandK-4physical.html   (824 words)

  
 Proteins serve as models for understanding complex physical systems
It's fitting, then, that at the 1999 meeting of the American Association for the Advancement of Science one of the presentations discusses a bridge between biology and physics: using proteins and other biomolecules as models for studying complex physical systems.
The other notion researchers have advanced is that the energy landscape is organized in a hierarchical way: within each valley there are dips and wiggles, and within those still more, an increasingly fine detail built into the landscape.
Researchers now are applying the ideas of an energy landscape with a hierarchical structure, gained from studying proteins, to complex, macroscopic systems.
www.lanl.gov /news/releases/archive/99-012.shtml   (598 words)

  
 The KLI Theory Lab - keywords - physical systems   (Site not responding. Last check: 2007-10-20)
Rosen, R. The Gibbs paradox and the distinguishability of physical systems.
Van der Meer, J.M. The engagement of religion and biology: A case study in the mediating role of metaphor in the sociobiology of Lumsden & Wilson.
Keywords: analogy • biological systems • causation • complexity • emergent materialism • hierarchy • human sociobiology • information • metaphor • methodological reduction • ontological reduction • part-whole relations • physical systems • religion and science • self-organization • social systems • theory constitution • theory reduction.
www.kli.ac.at /theorylab/Keyword/P/PhyslSys.html   (125 words)

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