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Topic: Scale factor

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  Scale factor (Universe) - Wikipedia, the free encyclopedia
The scale factor, parameter of Friedmann-LemaƮtre-Robertson-Walker model, is a function of time which represents the relative expansion of the universe.
The scale factor could, in principle, have units of length or be dimensionless.
The evolution of the scale factor is a dynamical question, determined by the equations of general relativity, which are presented in the case of a locally isotropic, locally homogeneous universe by the Friedmann equations.
en.wikipedia.org /wiki/Scale_factor_(Universe)   (192 words)

 Scale factor - Wikipedia, the free encyclopedia
In the equation y = Cx, C is the scale factor for x.
C is also the coefficient of x, and may be called the constant of proportionality of y to x.
There is also a scale factor for the expansion of the Universe.
en.wikipedia.org /wiki/Scale_factor   (111 words)

 Scale Factor   (Site not responding. Last check: 2007-10-09)
The scale factor of figure B to A is: 1/3 (9 * 1/3 = 3; 15 * 1/3 = 5)
It is the reciprocal of the scale factor from the small to the large.
If the scale factor from the small to the large is s, then the area of the large figure is squared or to the second power times the area of the small figure.
wms.watertown.k12.ma.us /math/math_help/gradeseven/stretching/scale%20factor.htm   (351 words)

 UDS File Naming Conventions   (Site not responding. Last check: 2007-10-09)
The scale factor for a CAD drawing is based on its final plot size.
For example, the scale of 3" = 1'-0" is the same as 3"=12" or a pure ratio of 1:4.
The scale factor is important in determining many things, such as the linetype scale, text heights, and dimension sizing.
user.dtcc.edu /~cripps/courses/aet_content/cadinfo/cad_scalefactor.html   (127 words)

 Scale Factor Editing (P)   (Site not responding. Last check: 2007-10-09)
If a scale editing descriptor is specified, the scale factor is set to the new value, which affects all subsequent real edit descriptors until another scale editing descriptor occurs.
On input, a positive scale factor moves the decimal point to the left, and a negative scale factor moves the decimal point to the right.
For G editing, the scale factor has no effect if the magnitude of the data to be output is within the effective range of the descriptor (the G descriptor supplies its own scaling).
www.helsinki.fi /atk/unix/dec_manuals/cf95au54/lrm0432.htm   (602 words)

 Scale Factor Editing - the P Edit Descriptor   (Site not responding. Last check: 2007-10-09)
On output, the effect of the scale factor depends on the type of field descriptor associated with it.
The effect of the scale factor for the G field descriptor is suspended if the magnitude of the data to be output is within the effective range of the descriptor, because the G field descriptor supplies its own scaling function.
On output, a scale factor under E, D, or G field descriptor control merely alters the form in which the data is transferred.
www.helsinki.fi /atk/unix/dec_manuals/cf77au/olrm0235.htm   (648 words)

 TCP option 3, Window Scale Option   (Site not responding. Last check: 2007-10-09)
The window scale extension expands the definition of the TCP window to 32 bits and then uses a scale factor to carry this 32 bit value in the 16 bit Window field of the TCP header (SEG.WND in RFC-793).
It would be incorrect to send a window scale option only when the scale factor changed, since a TCP option in an acknowledgement segment will not be delivered reliably (unless the ACK happens to be piggy-backed on data in the other direction).
The scale factor is limited to a power of two and encoded logarithmically, so it may be implemented by binary shift operations.
www.networksorcery.com /enp/protocol/tcp/option003.htm   (288 words)

 Scale Factor
The closer the scale factor is to 1 the easier it is to match the appearance of scale flight.
As a scientific curiosity, if you scale down an airplane the density (which was assumed constant in the C-47 shrink) has to go down with the square root of the scale factor if the speed scales like we want it to.
For the scale factor of 1/14 this would mean the density of the model would have to be about 26.7% the density of the original aircraft.
geocities.com /CapeCanaveral/Galaxy/4707/Aeronotes/ScaleFactor.htm   (628 words)

 Scale Factor   (Site not responding. Last check: 2007-10-09)
The projection of the spheroid onto a plane requires that measured distances be adjusted by a scale factor the value of which is determined by the map projection being used.
The creation of setout notes requires that the calculated distances between two points must be divided by the scale factor so that the plane distances from the map projection are adjusted to suit the curvature of the Earth and thus ensure that the setouts are in the correct position.
The default scale factor may be changed by this function if you wish to use a more precise scale factor rather than a mean scale factor for the area of interest.
www.surpac.com /refman/default/survey/scale.htm   (308 words)

 Determining Scale Factor   (Site not responding. Last check: 2007-10-09)
To calculate the scale you need, first establish your system of units and second, determine a scale factor.
A scale factor is a setting that enables you to produce a plot at the size you want from a drawing that you have created at full scale.
Sheet size is calculated in the same way as in manual drafting, except that you use the resulting scale ratio to scale up the sheet size to fit around the full scale size of your drawing.
www.ce.metu.edu.tr /~ce101/lecturenotes/CHAPTER3HTML/ACAD3216.htm   (356 words)

 Ring laser gyroscope scale factor error control apparatus and method control apparatus and method - US Patent 5442442   (Site not responding. Last check: 2007-10-09)
The scale factor error control system of claim 1, wherein the means for minimizing the difference and sum of the first and second beam intensity signals further includes means for providing push-pull mirror control of at least two of the cavity length control mirrors.
The present invention attempts to reduce scale factor nonlinearity by an ensemble average of a factor of 4 and may reduce the variations by a much larger factor, all for a moderate cost and moderate increase in complexity.
The scale factor error mirror and the cavity length control mirror dither drive unit 104 oscillates the mirrors at very small amplitudes in push-pull fashion at a frequency substantially different from the cavity length control mirror drive, which also oscillates the mirrors in push-pull.
www.patentstorm.us /patents/5442442.html   (9512 words)

 SCALE FACTOR   (Site not responding. Last check: 2007-10-09)
Before you write the scale as a fraction or a ratio without units, convert the measurements so that the units in both terms are the same.
Instead of a scale drawing, sometimes you may have only a simple sketch with dimensions, as shown in Figure 1, but most times a scale drawing is required.
Before you write the scale as a fraction o ratio of terms without units, convert the measurements so that the units in both terms are the same.
www.pusd.info /teachers/smiddleton/Geo/Similarity/scale_factor.htm   (1012 words)

 Method and apparatus for determining a cross-range scale factor in inverse synthetic aperture radar systems - Patent ...
This cross-range scale factor is then displayed on a display, from which an operator can accurately determine the size of target objects imaged by the radar.
means for displaying the cross-range scale factor on a radar display of the inverse synthetic aperture radar, which scale factor provides an indication of the relative size of objects imaged by the inverse synthetic aperture radar.
The cross-range scale factor is then determined by using the rotation rate where entropy is the minimum as the estimated rotation rate of the target 11.
www.freepatentsonline.com /5164730.html   (2854 words)

 [No title]   (Site not responding. Last check: 2007-10-09)
Scale factor is a multiplier applied to data before it is stored.
When a scale factor is input that is not a power of 2, a value will be used that is the next power of 2 lower then what was specified.
For example, a scale factor of 15 was input but a value of 8 is what was applied to the data.
www.ldeo.columbia.edu /BRG/ODP/ODP/IESX/FAQs/faq_207.html   (83 words)

 Data Reduction Scale Factor   (Site not responding. Last check: 2007-10-09)
To minimize this error and produce the best resolution in the conversion, the scale factor should be set to best fit the input signal to this range.
If the input waveform is known to have a voltage swing of +/- 1.0 V, the scale factor should be set to 32767.
Later in the processing chain, if we convert the values back, the signals are rescaled to match their original range by using the inverse of the scale factor used earlier.
www.tdt.com /Sys3WebHelp/RPvdsUG/Data_Reduction_Scale_Factor.htm   (351 words)

 Math Forum - Ask Dr. Math   (Site not responding. Last check: 2007-10-09)
Find: A) the scale factor B) the ratio of the perimeters C) the ratio of the areas of the octagons I have no clue on how to do this at all.
Do you know what a scale factor is? If you do, the first part is simple: it's just the ratio of the two numbers you were given.
If two figures are similar (the same shape), as all regular octagons are, then the ratio of any length in the figure (such as a diameter, or the perimeter) will be the same as the scale factor, and the ratio of areas will be the SQUARE of the scale factor.
mathforum.org /library/drmath/view/57824.html   (312 words)

 SNAPSCALE(1NEMO) manual page   (Site not responding. Last check: 2007-10-09)
All scalings are done independantly, the scalefactors have to be supplied explicitly.
For example, if positions are scaled, velocities are not (unless specified of course), and are treated as independant.
The default for all scale factors is 1.
bima.astro.umd.edu /nemo/man_html/snapscale.1.html   (252 words)

 DRAW Statement's Scale (S) Command Has Default Scale Factor 4 (58025)   (Site not responding. Last check: 2007-10-09)
The scale factor is specified by including the "S" command, followed by a number from 1 to 255, before the commands that actually draw the lines.
The scale factor multiplied by movement-command arguments (U, D, L, R, or relative M commands) divided by 4 gives the actual distance moved.
Knowing that the default scale factor is 4, it is easy to calculate the length of any line given any possible scale factor.
www.it-faq.pl /mskb/58/025.HTM   (513 words)

 Help FLOWGRAPH /SCALE_FACTOR Description   (Site not responding. Last check: 2007-10-09)
The default scale factor of 1.0 specifies 6-point text within each flowgraph box and positions the boxes on a quarter inch grid.
Scale factors smaller than 1.0 shrink the text and boxes, allowing more of the flowgraph to appear on a single page.
Scales on the order of 0.1 can be useful to get an overall picture of all the code found.
ram3.chem.sunysb.edu /nucwww/helplib/FLOWGRAPH/_SCALE_FACTOR/DESCRIPTION.html   (219 words)

 LBD Supplemental - Scale Factor
Therefore, a scale factor is a number that is multiplied by the length of a line to get the length of a second, similar line.
To use scale factor to calculate a new dimension, the measurements must be in the same units.
Scale factor is usually used when checking to see if figures are similar.
www2.whidbey.net /ohmsmath/webwork/OL_Text/tscalefactor.htm   (160 words)

 Multiplot Scale Factor
At times, it is desirable to scale character sizes larger when generating multiplots in order to keep the text on the plot more legible.
and where is a decimal number or parameter that specifies the scale factor for text width.
The default scale factor is 1 (i.e., no scaling).
www.itl.nist.gov /div898/software/dataplot/refman1/auxillar/mpscale.htm   (295 words)

 Scale Factor - UK Special offers
Scale factor dualities in anisotropic cosmologies Scale factor dualities...
Scale factor dualities in anisotropic cosmologies Scale factor dualities in anisotropic cosmologies The concept of scale factor duality is considered within the context of the spatially homogeneous, vacuum Brans-Dicke cosmologies.
To scale your data in the Y-dimension by a given factor: ch.Set 'Yfactor' 1000.
www.searchhut.co.uk /scale-factor.htm   (179 words)

 Citebase - The Inverse Scale Factor in Isotropic Quantum Geometry
The inverse scale factor, which in classical cosmological models diverges at the singularity, is quantized in isotropic models of loop quantum cosmology by using techniques which have been developed in quantum geometry for a quantization of general relativity.
For large scale factors (in fact, up to a scale factor slightly above the Planck length) the eigenvalues are close to the classical expectation, whereas below the Planck length there are large deviations leading to a non-diverging behavior of the inverse scale factor even though the scale factor has vanishing eigenvalues.
Already at the kinematical level, this is indicated by the fact that the inverse scale factor is represented by a bounded operator even though the classical quantity diverges at the...
citebase.eprints.org /cgi-bin/citations?id=oai:arXiv.org:gr-qc/0105067   (1202 words)

 Scale factor   (Site not responding. Last check: 2007-10-09)
Above the upper right corner of the graph, space is reserved for a legend to display the scale factor (for example, Scale 8, or Scale 16).
The scale factor defines the degree of vertical compression applied to the vertical log scale, as explained above under the heading 'Logarithmic scale'.
The scale factor is only printed if it is greater than the default value, which is Scale 4.
refsonline.hemscott.com /help/helpfileScale_factor.htm   (98 words)

 The Scale Factor: A New Degree of Freedom in Phase Type Approximation (ResearchIndex)   (Site not responding. Last check: 2007-10-09)
The models of this common set are assigned with a non-negative real parameter, the scale factor.
The case when the scale factor is strictly positive results in Discrete phase-type distributions and the scale factor represents the time elapsed in one step.
If the scale factor is 0, the resulting class is the class of Continuous phasetype...
citeseer.ist.psu.edu /675102.html   (509 words)

 36.1 Understanding animation   (Site not responding. Last check: 2007-10-09)
Scale factor animation produces a sequence of images that vary only in the scaling of a single deformed shape, contour, or symbol plot.
The default behavior is for the values within the legend to scale with each image; however, if you use the contour options to specify contour limits, the legend remains constant.
Individual images are formed by applying the range of animation scale factors to the field output values displayed in the plot.
www.see.ed.ac.uk /it/online/abaqus/books/usi/pt05ch36s01.html   (806 words)

 ACE: ACE_High_Res_Timer Class Reference   (Site not responding. Last check: 2007-10-09)
The global scale factor is required for platforms that have high-resolution timers that return units other than microseconds, such as clock ticks.
On Solaris, a scale factor of 1000 should be used because its high-resolution timer returns nanoseconds.
Set (and return, for info) the global scale factor by sleeping for usec and counting the number of intervening clock cycles.
www.dre.vanderbilt.edu /Doxygen/Current/html/ace/classACE__High__Res__Timer.html   (2164 words)

 Map Scale Factor   (Site not responding. Last check: 2007-10-09)
A scale factor is used to proportion the size of the imported model into this program's editing environment.
The choice of this factor depends on the scale of the model being imported.
If you find that the scale that you specified is not correct, you can make adjustments later.
docs.bentley.com /en/HMWaterCAD/HelpWaterCAD-05-36.html   (67 words)

 Scale Factor   (Site not responding. Last check: 2007-10-09)
A map scale is a representative ratio of map distances
The scale of a map is customarily chosen to
that the scale is smaller as the number increases.
www.tpub.com /content/USMC/mcwp3167/css/mcwp3167_58.htm   (401 words)

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