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Topic: Characteristic


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In the News (Thu 12 Nov 09)

  
  The Estimates of the Characteristic Function of the Probability Distribution for Rainfall in San Jose, California
As explained in the reading on characteristic functions the characteristic function for a distribution is the expected value of exp(izω).
The computation of the components of the characteristic function is based upon the midpoints of the ranges for the histogram.
The maximum value for which the estimates of the characteristic function based upon the midpoints of the intervals used is probably lower than 16 as was assumed.
www.sjsu.edu /faculty/watkins/charactest.htm   (960 words)

  
  X-rays   (Site not responding. Last check: 2007-10-16)
Characteristic x-rays are emitted from heavy elements when their electrons make transitions between the lower atomic energy levels.
Moseley measured the frequencies of the characteristic x-rays from a large fraction of the elements of the periodic table and produces a plot of them which is now called a "Moseley plot".
Characteristic x-rays are used for the investigation of crystal structure by x-ray diffraction.
hyperphysics.phy-astr.gsu.edu /hbase/quantum/xrayc.html   (416 words)

  
 Crimes' Criminalistics Characteristic
It should be noted that the term “criminalistical characteristic of crimes” as to the subject of methods of investigating crimes appears in the theoretical, methodical and educational literature on criminalistics (3, 95).
Criminological characteristic of, for example, a theft of state and private property includes such main data as: a) condition of a fighting against thefts; b) classification of thefts; c) classification of criminals, characteristic of some types of thieves and their actions.
Criminalistical characteristic of a crime unlike criminal-legal one is a component of a general understanding of a crime and bears auxiliary specific official character.
www.crime-research.org /library/Polivanjuk_mar.html   (2448 words)

  
 Search Results for "characteristic"
The characteristic behavior or mode of existence of a parasite or parasitic population.
A characteristic attribute, talent, or trait that is helpful in securing recognition or attention: waiters in tropical attire are part of the restaurant's...
Of or characteristic of an architectural style of the mid-18th century derived...
www.bartleby.com /cgi-bin/texis/webinator/sitesearch/+3wwFqdqrwGwqBnGo5BoqxzmAwwwmFqhqdc_WnFqhqdc_W   (278 words)

  
 PlanetMath: characteristic
The characteristic of a field (or more generally an integral domain) is always prime.
This is version 10 of characteristic, born on 2002-01-01, modified 2006-07-24.
Object id is 1160, canonical name is Characteristic.
planetmath.org /encyclopedia/Characteristic.html   (124 words)

  
 characteristic. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
Being a feature that helps to distinguish a person or thing; distinctive: heard my friend's characteristic laugh; the stripes that are characteristic of the zebra.
Mathematics The integral part of a logarithm as distinguished from the mantissa: The characteristic of the logarithm 6.3214 is 6.
The integers have a characteristic of zero; the integers modulus 12 have a characteristic of 12.
www.bartleby.com /61/68/C0246800.html   (173 words)

  
 Characteristic - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-16)
Characteristic is also sometimes used as a piece of jargon in discussions of universals in metaphysics, often in the phrase 'distinguishing characteristics'.
An I-V or current-voltage characteristic is the current in a circuit as a function of the applied voltage
The characteristic is also the distinguishing flash pattern of a lighthouse meant to be seen at night.
en.wikipedia.org /wiki/Characteristic   (120 words)

  
 Key Characteristics of Laundry Detergent Ingredients | Design for the Environment (DfE) | US EPA
Example: Alkylphenol ethoxylates--biodegrade under anaerobic conditions to alkylphenols, which persist in the environment, have high toxicity to aquatic organisms, and may be endocrine disruptors (compounds that adversely affect the endocrine system that controls metabolism, reproduction, and growth).
Key Characteristic of Concern: Potential to cause eutrophication in fresh water (eutrophication is the process by which a body of water becomes rich in dissolved nutrients, diminishing oxygen levels and a water body's ability to support various forms of aquatic life).
Key characteristics of concern: Highly caustic or acidic wash environments; may cause severe irritation or burns to living tissue in humans or aquatic organisms.
www.epa.gov /dfe/pubs/laundry/techfact/keychar.htm   (338 words)

  
 Characteristic Specification
The set of characteristics and corresponding expressions for a style object is determined in a similar manner during the evaluation of the style-expression.
The expression specifying the value of a characteristic in a make-expression or style-expression shall not be evaluated immediately; instead the expression shall be associated with the characteristic in the created flow object or style object.
The value of a characteristic for a flow object is determined by evaluating the expression specifying that characteristic with both the value flow object and the specification flow object equal to that flow object.
www.jclark.com /dsssl/IS/dsssl129.htm   (1150 words)

  
 The Characteristic Function of a Probability Distribution
The expected value of the function exp(iωz) is called the characteristic function for the probability distribution p(z), where ω is parameter that can have any real value and i is the square root of -1.
The crucial property of characteristic functions is that the characteristic function of the sum of two independent random variables is the product of those variables' characteristic functions.
The connection between the moments of a probability distribution and its characteristic function is seen from taking the derivaative of the characteristic function with respect to the parameter ω.
www2.sjsu.edu /faculty/watkins/charact.htm   (1286 words)

  
 Citations: Counting points on varieties over nite elds of small characteristic - Lauder, Wan (ResearchIndex)
This result was based upon Dwork s proof of the rationality of the zeta function of a variety [6] but unfortunately does not lead to....
....a large class of hyperelliptic curves in characteristic 2, which is the main motivation behind the work.
A.G.B. Lauder and D. Wan, Counting points on varieties over nite elds of small characteristic, to appear in the proceedings of the MSRI workshop in Algorithmic Number Theory Aug-Dec 2000.
citeseer.ist.psu.edu /context/2057310/0   (949 words)

  
 Loudspeaker Cable Characteristic Impedance
At DC, the characteristic impedance of all cables is infinite (for all intents and purposes), and the rated impedance is usually not reached until the signal frequency is well above the audio band - typically around 100kHz or more, depending on the cable's construction and length.
The characteristic impedance of a cable (Zo) is a complex function of the diameter (or dimensions if other than round) of the conductors, their relative spacing, and the insulation material.
In order to obtain a low characteristic impedance, it is necessary to have very low inductance and relatively high capacitance, and the high capacitance may impose serious constraints on the amplifier.
sound.westhost.com /cable-z.htm   (5994 words)

  
 Fault Slip Kinematics using Characteristic Microearthquakes
Analyses of the 14+ years of Parkfield monitoring data have revealed significant and unambiguous departures from stationarity both in the seismicity characteristics and in wave propagation details.
Characteristic repeaters are numerous, widespread and distributed in time for all the regions examined so far.
of characteristic repeating sequences-what appears to be a robust quantitative measure of fault slip rate at depth.
seismo.berkeley.edu /annual_report/ar00_01/node19.html   (2729 words)

  
 Gravity & radiation pressure: Characteristic radiation
Characteristic x-radiation results when the interaction is sufficiently violent to ionize the target atom, by the total removal of the inner-shell electron.
Photons of this sort have energies that are, of course, characteristic of the anode material, and are emitted from the atom with equal probability in all directions.
In summary, characteristic x-rays are produced by transitions of orbital electrons from outer to inner shells.
www.blazelabs.com /f-g-rad.asp   (481 words)

  
 Characteristic (algebra) - Wikipedia, the free encyclopedia
The characteristic of the ring R may be equivalently defined as the unique natural number n such that nZ is the kernel of the unique ring homomorphism from Z to R which sends 1 to 1
And yet another equivalent definition: the characteristic of R is the unique natural number n such that R contains a subring isomorphic to the factor ring Z/nZ.
Fields of characteristic zero have the most familiar properties; for practical purposes they resemble subfields of the complex numbers (unless they have very large cardinality, that is).
en.wikipedia.org /wiki/Characteristic_(algebra)   (558 words)

  
 Definition of characteristic - Merriam-Webster Online Dictionary
Learn more about "characteristic" and related topics at Britannica.com
Find more about "characteristic" instantly with Live Search
See a map of "characteristic" in the Visual Thesaurus
www.m-w.com /dictionary/characteristic   (68 words)

  
 Characteristic -- from Wolfram MathWorld
In general, it refers to some property that inherently describes a given mathematical object, for example characteristic class, characteristic equation, characteristic factor, etc. However, the unqualified term "characteristic" also has a number of specific meanings depending on context.
This form of characteristic was invented by Riemann.
Lyapunov Characteristic Exponent, Lyapunov Characteristic Number, Mantissa, Mathieu Characteristic Exponent, Ordinary Differential Equation, Partial Differential Equation, Plücker Characteristics, Scientific Notation, Segre Characteristic.
mathworld.wolfram.com /Characteristic.html   (196 words)

  
 characteristic - Synonyms from Thesaurus.com
Copyright © 2007 by Lexico Publishing Group, LLC.
Perform a new search, or try your search for "characteristic" at:
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thesaurus.reference.com /browse/characteristic   (300 words)

  
 Custom Characteristic Issue - HERO GAMES Discussion Boards
If you have a level-based ability (such as this custom characteristic) which is set to cost END, but don't purchase any levels in it, the end cost is 0.
If you go to the Powers tab and select your custom characteristic and just click on the Add Modifiers button, you won't see Reduced END on the available list because the ability (as defined) does not require any END to use.
Either purchase some levels in the characteristic or check off the "Apply Modifiers to base Characteristic" option (assuming that the base characteristic has levels in it) before assigning Modifiers.
www.herogames.com /forums/showthread.php?t=33415   (699 words)

  
 WuRittSolva: Implementation of Wu-Ritt Characteristic Set Method -- from Mathematica Information Center
What is more, it supplies smart functions for elementary geometry theorems proving, promising theorem proving in a smart way.
This work is mainly for educational purposes, for the use of the WuRitt characteristic set method.
Up to now, the main components in mechanzation mathematics that have been implemented in WuRittSolva are only the basic algorithms of characteristic set method and also simple geometry theorem proving functions.
library.wolfram.com /infocenter/MathSource/5716   (205 words)

  
 The MSDS HyperGlossary: Hazard Characteristic Code (HCC)
The Department of Defense (DoD) Hazardous Material Information Resource System (HMIRS) uses Hazard Characteristic Codes (HCC) to classify materials by their primary hazard characteristic for the safe segregation and storage of hazardous materials.
There are 10 basic classes defined by letters A to Z, and each of these is broken down into additional subclasses (see below).
Here is a listing of the Hazard Characteristic Codes and a brief explanation for each.
www.ilpi.com /msds/ref/hcc.html   (2877 words)

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