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Topic: Scale-(measurement)


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In the News (Wed 23 Dec 09)

  
 Measurement
Measurement is the assignment of numbers to objects in such a way that physical relationships and operations among the objects correspond to arithmetic relationships and operations among the numbers.
Different levels of measurement are defined by the number and kind of correspondences that hold between the physical relations among objects and the arithmetic relations among the scores.
The different levels of measurement are distinguished by which arithmetic operations on the measured scores have counterparts in physical operations on the objects.
www.analytictech.com /mb313/measurem.htm   (1792 words)

  
 NDE Associates, Inc. - Boiler Tube ID Oxide Scale: Measurement and RLA
Oxide scale measurements should be performed at circumferential locations which are expected to have experienced the highest temperature.
The thickest scale may be expected on tubes that are in the hottest sections of the boiler.
Since the ID scale grows over a period of time, the life estimation is not done for a scale thickness value at a specific time.
www.nde.com /idoxide.htm   (535 words)

  
 NWEA The Measurement Scale
NWEA assessments use a measurement scale that has proven to be exceptionally stable and valid over time.
Like meters or pounds, the scale is equal-interval, meaning that the distance between 170 and 182 is the same as the distance between 240 and 252.
Like using a ruler to measure a child's growth in height, we use the RIT scale to measure a student’s academic growth over time.
www.nwea.org /assessments/scale.asp   (501 words)

  
 DOE SCiDAC Proposal : Bandwidth estimation: measurement methodologies and applications - CAIDA : PROJECTS : bwest
Paxson observed that the distribution of bandwidth measurements is multimodal, and he elaborated on the identification and final selection of a capacity estimate from these modes [21].
Better bandwidth measurement algorithms are needed by a large class of network applications, traffic engineers controlling path selection and service class differentiation, and users wanting to verify they are receiving the access bandwidth they expect.
We will also pursue ways to correlate active measurements with passively collected data (timestamped packets) when the latter is available.
www.caida.org /projects/bwest/proposal.xml   (5873 words)

  
 Book: Scale Development - Theory and Applications
Written at an accessible level, Scale Development guides the reader toward the identification of the latent variable, the generation of an item pool, the format for measurement, and the optimization of the scale length.
As a result of this deficiency, the researcher must develop his or her own scale of measurement.
Measurement -- the way researchers quantify the observations they have made about people, objects, events, or even processes -- is a fundamental activity of science.
www.assess.com /Books/b-3775X.htm   (155 words)

  
 The current work presents experimental investigations carried out in order to understand in more detail the role of grain boun
The resulting gray scale pattern on the surface of the specimen was recorded and reference coordinates for the different experimental methods (microtexture, metallography, microstrain determination) were fixed on the sample surface.
Photogrametry is a method to determine the spatial distribution of microstrains at the sample surface by measurement of changes in the three dimensional plastic displacement field during a deformation experiment [1, 8].
This is a digital image analysis method which is based on the recognition of geometrical changes in the gray scale distribution of surface patterns before and after straining [1, 8].
www2.mpie-duesseldorf.mpg.de /msu-web/msuweb_neu/deutsch/themenkatalog/gsmeasur/project.htm   (3473 words)

  
 Ancient Egypt Magazine - Vol 3 Issue 3
The standard unit of linear measurement used by carpenters was the ‘royal cubit’, which was based on the length of a man’s forearm.
Although these measurements were standardised, ‘royal cubit rods’ have been discovered, as one might expect, with an error of up to plus or minus 2 mm in overall length.
The author has found that evidence of measurement can also be seen on other types of furniture where the ‘royal cubit’ or ‘short cubit’ were often used as the initial measure to determine either the length, width or height of a piece of furniture.
www.ancientegyptmagazine.com /woodwork16.htm   (1829 words)

  
 Properties of Scale Measurement (Ex. 12.3)
Scale Measurement is the Process of Assigning Descriptors to a Respondent’s Raw Responses.
coba.usf.edu /departments/marketing/faculty/ortinau/chap12/sld007.htm   (13 words)

  
 IMTEC, Dimensional Metrology and Industrial Metrology, Measurement consulting, 3d metrology, On-site measurement services, metrology jobs, contract services,large-scale measurement service, laser tracker
Our dimensional metrology and measurement consulting service focusing on 3d metrology is the result of years of experience in the field utilizing traditional and emerging technology.
Although most of our measurement projects are performed by a single engineer, we can (and have) supplied two to four man teams.
Depending on the environment, geometry and "work zone" (L x H x W) of the measurement project this system has documented and proven precision of 0.1 mm (0.004") to 1.0 mm (0.039").
www.imtecgroup.com /contract%20measurement%20service.htm   (365 words)

  
 Citations: Measurement Scales and Statistics: A Clash of Paradigms - Michell (ResearchIndex)
Michell: "Measurement Scales and Statistics: A Clash of Paradigms".
Michell J., "Measurement scales and statistics: A clash of paradigms", Psychological Bulletin 100(3), pp 398-407, 1986
Citations: Measurement Scales and Statistics: A Clash of Paradigms - Michell (ResearchIndex)
citeseer.ist.psu.edu /context/440007/0   (291 words)

  
 Citations: Basic Measurement Theory - Suppes, Zinnes (ResearchIndex)
The prototype of a scale is the mapping of physical bodies to a measure of their physical mass.
An equivalent way of expressing this condition with the measurement theory vocabulary is that the data are supposed to be measured on an ordinal....
Suppes and J. Zinnes, "Basic measurement theory," in Handbook of Mathematical Psychology, Volume 1, (R. Luce, R. Bush, and E. Galanter, eds.), John Wiley and Sons, 1963.
citeseer.ist.psu.edu /context/440020/0   (1135 words)

  
 Digital Crane Scale Mooring Load Cell Construction Safety Chain Hoist Dynamometer
For use of digital scale, mooring, load cell, construction safety, chain hoist, dynamometer, force measurement, industrial scale, overload protection, traction control our hanging scale with digital weight tension load meter for tension control in force tranducer digital hanging scale and offshore crane load control are portable digital scale for load monitoring.
Where dangers of overload, traction control, weighting systems, construction safety, force measurement, industrial scales for molten materials and critical measurements during casting processes used in steel mills or metal producing foundries, our portable digital scale for load monitoring, industrial scales that are wireless dynamometers are perfect for these applications.
RON crane scales and dynamometers are load, tension and force gauges used for weighing during lifting, force and load control, and force and load testing.
www.roncranes.com   (658 words)

  
 Genome Biology Full text Genomic-scale measurement of mRNA turnover and the mechanisms of action of the anti-cancer drug flavopiridol
The present genomic-scale measurement of mRNA turnover uncovered a regulatory logic that links gene function with mRNA half-life.
The adjusted R-squared statistic, which is a measure of correlation between the observed data values and the predicted values from the linear model, shows how well a first-order kinetics model would describe the mRNA degradation rates.
By measuring mRNA turnover rates comprehensively, we identified unexpected relationships between the function of a gene and its mRNA stability.
www.genomebiology.com /2001/2/10/research/0041   (5685 words)

  
 Workshop on Community Oriented Network Measurement Infrastructure - CAIDA : OUTREACH : workshops : conmi
However to be viable, large scale measurement must overcome a number of challenges.
Our vision is that a community oriented approach may be sufficient to address issues in large scale measurement such as privacy and network impact.
There is increasing awareness that the size and scope of the Internet calls for large scale distributed network measurement.
www.caida.org /outreach/workshops/conmi   (361 words)

  
 4pSP3. Perceived unpleasantness of natural sounds: Ratio-scale measurement and psychoacoustic analysis.
Perceived unpleasantness of natural sounds: Ratio-scale measurement and psychoacoustic analysis.
The resulting scale values varied by a factor of 100 (diesel engine versus jackhammer).
The judgments conformed with the highly restrictive BTL model [R. Luce, Individual Choice Behavior (Wiley, New York, 1959)], thus justifying ratio-scale representation of perceived unpleasantness.
www.auditory.org /asamtgs/asa97snd/4pSP/4pSP3.html   (144 words)

  
 5pAA13. Comparison between the 1/10-scale model experiment and the full-scale measurement in a concert hall.
In the scale model study, the impulse responses were measured by the direct method using a spark discharge source and monaural and binaural microphone systems.
In order to examine the accuracy of acoustic scale modeling, the experimental results of a 1/10-scale model study performed for acoustical design of a concert hall and those measured in the full-scale hall after the construction are compared.
The monaural impulse responses were measured at the corresponding points in the scale model and the real hall, and such quantities as D50, C80, and Ts were obtained and compared.
www.auditory.org /asamtgs/asa96haw/5pAA/5pAA13.html   (244 words)

  
 Short description of the full-scale measurement set-up for wind, rain and driving rain at the TUE site
The full-scale measurements started in December 1997 and went till January 2001.
The driving rain measurements are carried out on the west façade of the Main Building, on the campus of the Eindhoven University of Technology (TUE).
It shows also the anemometer on the arm for the measurements of the wind velocity near to the facade.
sts.bwk.tue.nl /drivingrain/measurementsetup.html   (586 words)

  
 Measurement and Scale
Benoit Mandelbrot proposed this question to demonstrate the complexity of measurement and scale.
This brings a new understanding to scale and to measurement.
However, if one examines the measuring techniques used to determine the length of Britian's coastline, it becomes obvious that this measurement is only an estimate based on the accuracy of the measuring device.
home.inreach.com /kfarrell/measure.html   (332 words)

  
 Scales of Measurement
JMP) use these scales of measurement to make decisions about the type of analyses that should be performed.
You are only allowed to examine if a nominal scale datum is equal to some particular value or to count the number of occurrences of each value.
This ratio hold true regardless of which scale the object is being measured in (e.g.
www.math.sfu.ca /~cschwarz/Stat-301/Handouts/node5.html   (438 words)

  
 Project 3.1
The thermal properties include thermal diffusivity, thermal conductivity, emissivity and transmissivity, and they may need to be measured on a small scale, as in the case of semiconductors, or in-situ in situations where sample preparation is impractical.
As part of the previous NMS programme, an experiment was developed to demonstrate accurate measurement of thermal diffusivity to 1.5% using photothermal radiometry, the most accurate measurement of this property to date.
For example, the validity of a particular radiation-based thermometry measurement on gas turbine blades can be verified by checking the instrument against a LART instrument in a laboratory simulation of the blade environment.
www.npl.co.uk /thermal/projects/project3-1.html   (834 words)

  
 Vector » Handbook of Moiré Measurement (Ed. C A Walker et al) » Micro-scale strain measurement: Limitations due to restrictions inherent in optical systems and phase-stepping routines
Appendix A: Micro-scale strain measurement: Limitations due to restrictions inherent in optical systems and phase-stepping routines
Measurement and Engineering » Measurement Science and Technology
Optical methods, in general, and moire interferometry, in particular, have been hugely successful in the determination of strain fields and the validation of theoretical and computational models.
dx.doi.org /10.1887/0750305223/b572b1   (213 words)

  
 Chandra :: Photo Album :: Scales and Angular Measurement
The system of angular measurement used by astronomers is based on divisions of the circle.
The apparent sizes of and distances between objects are described with angular measurement.
It is also 400 times more distant, so it appears to be the same size as the full moon; that is, it has the same angular size.
chandra.harvard.edu /photo/scale.html   (343 words)

  
 TopNotch Scales Digital Scales
Save on bath scales in a variety of models that offer features such as remote reading, scales that talk for the visually impaired and scales that will fit in with any bath decor.
Be sure to check our current deals on pocket and precision scales for precise measuring in ounces, grams and even carats.
Top Notch Scales offers a large selection of value priced kitchen and diet scales, scales for portion control and controlling your food costs.
www.topnotchscales.com   (173 words)

  
 Jensen
These full scale, direct measurement data of impulse histories and velocities can be used to aid in the design of structures within avalanche paths, including avalanche defense structures, transmission towers, lift towers, and buildings.
All these data are of interest in small time scales.
From 1993 to present, the Alta Avalanche Impact Pylon, a U.S./Japan joint research project, has been measuring impact pressures of the Mount Baldy Shoulder Avalanche, an avalanche which releases both naturally and artificially with the use of explosives as part of the mountain operations program of the Alta Ski Lifts Corporation.
www.irpi.to.cnr.it /English/congress/egs99/jensen.htm   (339 words)

  
 Scales scale accessories Johnson Scale providers of scales counting scales weighing scales floor scales medical scales and many other scale and measurement products from manufacturers like ametek & Instron
Scales from Johnson Scale Co., the premiere provider of scales and the source for all of your scale, force measurement and materials testing needs.
Find a scale by category, or use our search engine to find scales and many other items by manufacturer (including Instron and Ametek), model number, product, or application keywords.
These scales have been selected for their quality, value and out of the box user-friendly operation.
www.johnsonscale.com   (302 words)

  
 Data acquisition analog channel expander
The extended measurement range model also features 32 differential analog inputs and a programmable gain amplifier with gain selections of 1, 2, 4, and 8, but it has a ±20 volt full scale measurement range (at a gain of 1).
Allows selectable measurement ranges of ±1.25, ±2.5, ±5, and ±10 volts full scale (base model) or ±2.5, ±5, ±10, and ±20 volts full scale (extended range model) per channel.
The base model features 32 differential analog inputs, a programmable gain amplifier with gain selections of 1, 2, 4, and 8; and a ±10 volt full scale measurement range (at a gain of 1).
www.dataq.com /products/hardware/di725.htm   (687 words)

  
 FRB Minneapolis Research Archive - Aggregate Returns to Scale: Why Measurement Is Imprecise
In this article, we show that the production shocks implied by a range of returns to scale that encompasses both large increasing returns and large decreasing returns are almost identical.
ABSTRACT: The extent to which there are aggregate returns to scale at the level of aggregate production has important implications both for the types of shocks generating business cycles and for optimal policy.
However, prior attempts to measure the extent of these returns using instrumental variable techniques have yielded quite imprecise estimates.
minneapolisfed.org /research/qr/qr2332.html   (147 words)

  
 Small-Scale Measurement of Soil Water Content Using a Fiber Optic Sensor -- Garrido et al. 63 (6): 1505 -- Soil Science Society of America Journal
Small-Scale Measurement of Soil Water Content Using a Fiber Optic Sensor -- Garrido et al.
Small-Scale Measurement of Soil Water Content Using a Fiber Optic Sensor
measurement of water content within small soil volumes.
soil.scijournals.org /cgi/content/abstract/63/6/1505   (306 words)

  
 David J. Hand
(1999) Measurement and the nature of science: the impact on the relationship between science and the public.
Measurement theory and practice: the world through quantification,  Edward Arnold.
(1996) Statistics and the theory of measurement (with discussion).
stats.ma.ic.ac.uk /djhand/public_html   (2945 words)

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