
	Where results make sense

Topic: Characteristic time

	Learn more about Intellectual history of time in the online encyclopedia. (Site not responding. Last check: 2007-10-14)
		With invention of the pendulum in 1657 came isochronous time, although the time was still adjusted to match what was thought of as 'natural time', the angle of the sun on the horizon.
		However, it goes even further, destroying the assumption of linear time, and presenting nonlinear time, which is an extension of the characteristic time, of a system.
		linear time - time that is involved in non-chaotic differential equations, and mutually, a geometry that consists of smooth manifolds.
	www.onlineencyclopedia.org /i/in/intellectual_history_of_time.html (2229 words)

	Relaxation time - Wikipedia, the free encyclopedia
		Relaxation time is a general physics concept for the characteristic time in which a system relaxes under certain changes in external conditions.
		The relaxation time is related to the velocity of a body (typically a star) and the perturbation rate.
		The relaxation time is similar to the ratio of the velocity to the time derivative of the perturbation.
	www.wikipedia.org /wiki/Relaxation_time (195 words)

	Background (Site not responding. Last check: 2007-10-14)
		Friction and gravity terms are omitted, because for the given time scales the effect of friction is negligible (except near resonance), and gravity does not influence dynamic behaviour (in this linear model) (except for a falling pipe).
		The characteristic time scales of no-flow and steady flow are infinite and those for quasi-steady flow are very large.
		Smaller characteristic time scales apply for rigid column flow, relating primarily to the balance between inertia and frictional resistance.
	www.win.tue.nl /fsi/1Background/1.5Timescales.HTM (1116 words)

	Thermometrics: Thermistor Terminology
		The current-time characteristic is the relationship at a specified ambient temperature between the current through a thermistor and time, upon application or interruption of voltage to it.
		The temperature-wattage characteristic of a thermistor is the relationship at a specified ambient temperature between the thermistor temperature and the applied steady state wattage.
		The thermal time constant is the time required for a thermistor to change 63.2 percent of the total difference between its initial and final body temperature when subjected to a step function change in temperature under zero-power conditions.
	www.thermometrics.com /htmldocs/glossary.htm (424 words)

	2.2 Globular cluster structure (Site not responding. Last check: 2007-10-14)
		The crossing time is the typical time required for a star in the cluster to travel the characteristic size R of the cluster (typically taken to be the half-mass radius).
		Since the relaxation time is related to the number and strength of the gravitational encounters of a typical cluster star, it is related to the number of stars in the cluster and the average energy of the stars in the cluster.
		The evaporation time for a cluster is the time required for the cluster to dissolve through the gradual loss of stars that gain sufficient velocity through encounters to escape its gravitational potential.
	www.maths.tcd.ie /EMIS/journals/LRG/Articles/Volume5/2002-2benacquista/node4.html (686 words)

	Glossary Part 1 - NTC Thermistors - PTC Thermistors
		Current-time characteristic: The current-time characteristic is the relationship at a specified ambient temperature between the current through a thermistor and time, upon the application or interruption of voltage to it.
		The resistance ratio characteristic specified in military specification MIL-T-23648 is the resistance measured at 25°C divided by the resistance measured at 125°C. Resistance-temperature characteristic: The resistance temperature characteristic is the relationship between the zero-power resistance of a thermistor and its body temperature.
		Temperature-wattage characteristic: The temperature-wattage characteristic of a thermistor is the relationship at a specified ambient temperature between the thermistor temperature and the applied steady-state wattage.
	www.rtie.com /ntc/glossary.htm (1151 words)

	Characteristic time of the decoherence and the pointer basis (Site not responding. Last check: 2007-10-14)
		Characteristic time of the decoherence and the pointer basis
		In this section we shall define the characteristic time of the decoherence and examine the dependence of this decoherence time on the initial conditions.
		Besides the characteristic time of the decoherence the question of the pointer basis is also of great importance.
	bird.szfki.kfki.hu /~cewqo2000/proceedings/html/006/node4.html (515 words)

	Method for verifying identity or difference by voice - Patent 4054749
		However, when the recorded characteristic pattern is used for identification purposes and the identification is successfully made, the characteristic pattern extracted from the voice of the speaker at the time of verification is substituted for the previously recorded standard pattern so the most recent characteristic parameters available can be always stored.
		Next, the date or time of verification is keyed in by keyboard 1 and fed to the period processing/comparator device 8, where it is checked against the period information read from the voice record file.
		Also, the time of verification and the effective period based on it are used as a new period signal replacing the old one, and they are fed into the memory device 9 as a voice record file.
	www.freepatentsonline.com /4054749.html (1526 words)

	Hans Reichenbach [Internet Encyclopedia of Philosophy]
		Also the mathematical formulation of the special theory of relativity acknowledges the difference between space and time: the equation that defines the metric is dx^2 + dy^2 + dz^2 - dt^2 = ds^2 and the time coordinate is distinguishable from the space coordinates by the negative sign.
		Time dilation is an empirical hypothesis and Reichenbach says its physical meaning is that a clock does not measure the time coordinate but it measures the interval, ie the space-time distance between two events.
		According to Reichenbach, the causal theory of space and time is the basis for both the theory of relativity and the philosophy of space and time.
	www.iep.utm.edu /r/reichenb.htm (8071 words)

	Time Series Analysis and Prediction of Magnetospheric Indices (Site not responding. Last check: 2007-10-14)
		The AE time series was found to be affine such that the scaling exponent changes at a time scale of 113 (+/-9) minutes.
		These differences between the two time series arise from the difference in their periodicities in relation to their respective characteristic time scales.
		In contrast with this the dominating periods of the Dst data are shorter than the characteristic time scale, and appear in the steeper part of the spectrum.
	www.estec.esa.nl /conferences/96a09/Abstracts/abstract56 (590 words)

	JOT: Journal of Object Technology - Quality Characteristics for Software Architecture
		The quality characteristics (attributes for ATAM) are defined precisely in the standard, and the measures for the attributes are quite general and could be refined further for a particular application.
		The quality characteristics are refined into sub-characteristics manifested externally when the software is used as a part of a computer system and they are also a result of the evaluation of internal software attributes or measurable properties of an entity, appearing during the software development process.
		Notice that the presence of the compliance sub-characteristic means that the remaining properties within the characteristic are assumed to be fulfilled by the particular standard chosen.
	www.jot.fm /issues/issue_2003_03/article2 (5168 words)

	Chromatography - Wikipedia, the free encyclopedia
		Similarly to other forms of chromatography, differences in rates of movement through the solid medium are translated to different exit times from the bottom of the column for the various elements of the original sample.
		The analyte is forced through a column by liquid (mobile phase) at high pressure, which decreases the time the separated components remain on the stationary phase and thus the time they have to diffuse within the column.
		Less time on the column then translates to narrower peaks in the resulting chromatogram and thence to better resolution (it's easier to differentiate one peak from another) and sensitivity (tall, narrow peaks can be easier to discriminate from noise than shorter, broader peaks).
	en.wikipedia.org /wiki/Chromatograph (1907 words)

	1993 Annual Symposium Paper L
		This is due to the fact that the long equilibrium time mainly is caused by the low permeability of the ceramic diaphragm needed to maintain a high threshold pressure.
		It shows that the characteristic time is proportional to the membrane number.
		A cutoff time of 4 times the characteristic time is sufficient for a saturation accuracy within 1% PV.
	www.spwla.org /library_info/abstract/sympo/1990/1993PaperL.html (334 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
		A simple yet representative method for determining the characteristic time a persistent organic pollutant remains in a multimedia environment is presented.
		The characteristic time is an important attribute for assessing long-term health and ecological impacts of a chemical.
		They demonstrate that formulating the characteristic time based on the steady-state mass distribution in the environment closely approximates the dynamic characteristic time for a range of chemicals and thus can be used in decisions regarding chemical use in the environment.
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=323816 (311 words)

	Method and apparatus for detecting the presence of dental plaque or calculus - Patent 5382163
		The time-related characteristic may be a predetermined phosphorescent emission decay characteristic of the second electromagnetic radiation after the termination of the first electromagnetic radiation For example, the rate of decay during a predetermined period may be used.
		The time-related characteristic may then be the difference between the phase of the amplitude modulation of the first electromagnetic radiation and the phase of the amplitude modulation of the second electromagnetic radiation.
		The time constant (.tau.) data were taken during an interval of between 4-5 microseconds after determination of an optical excitation pulse, and specify the time required for the returned signal to decay to 10% of its value at the start of the period.
	www.freepatentsonline.com /5382163.html (5245 words)

	Generalization of the Theory of Transition Times in Metabolic Pathways: A Geometrical Approach -- Lloréns et al. ...
		As was discussed in the text, this time must correspond to the characteristic time of curve 2, which is qualitatively similar to curve 1.
		From this time to infinity, it is its mirror image with respect to the axis M, parallel to the time axis.
		To evaluate the characteristic time, the absolute value of df/dt must be taken into account, which yields an asymptotic behavior with greater (as in the example) or equal slope.
	www.biophysj.org /cgi/content/full/77/1/23 (5595 words)

	The Topology of Time (Site not responding. Last check: 2007-10-14)
		With time as an accepted fourth dimension of reality, the topology and characteristics of time can be discussed.
		The fourth characteristic of time is its integrity; the attached question is if time is branching or non-branching.
		The topology of time must be fully understood as an integral component of space in order to physically understand this universe.
	www.math.nyu.edu /phd_students/saverio/PhilosophyofTime.htm (1387 words)

	untitled
		The time signature is a guidepost to the overall rhythm of a piece of music.
		Each time signature also has a characteristic pattern of stressed and unstressed beats, In the sections that follow, you'll take a look at some basic time signatures and their characteristic patterns of stress.
		Each time signature has a natural, characteristic pattern of stressed and unstressed beats, The first beat of each measure in any time signature receives the most stress, In 4/4 time, the third beat is also stressed, but to a lesser extent.
	www.music-mind.com /Music/mpage3.HTM (404 words)

	Piezoelectric resonance component having an improved group delay time characteristic - Patent 4651109
		A piezoelectric resonance component having an imporved group delay time characteristic in accordance with claim 2, wherein said damping resistors are provided on an insulation substrate to which said piezoelectric plate is mounted.
		A piezoelectric resonance components having an improved group delay time characteristic in accordance with claim 4, wherein said damping resistors, said conductive patterns for connecting said damping resistors with respective said internal elements and said conductive pattern for performing said ground side connection are provided on both major surfaces of said insulation substrate.
		Further, the aforementioned damping resistors may be directly provided in a case member forming the piezoelectric resonance component having an improved group delay time characteristic, or in an internal element pressing member for retaining internal elements such as resonators in the case member.
	www.freepatentsonline.com /4651109.html (3832 words)

	Time Reference Characteristic (SAP Library - Non-cumulatives) (Site not responding. Last check: 2007-10-14)
		The time reference characteristic for an InfoCube when there are several time characteristics in the InfoCube is always the "most refined", since all other times in the InfoCube are derived from this.
		Only these SAP time characteristics can be used as time reference characteristics, since you must be able to derive time characteristics automatically from the most detailed time characteristic must be possible with the non-cumulative folder.
		The time characteristic calendar day must be included in the InfoCube, so that it can function as a reference characteristic for time-based aggregation.
	help.sap.com /saphelp_sem320bw/helpdata/en/65/4bdab4239011d5b2e30050da4c74dc/content.htm (341 words)

	Catalogo Articoli (Site not responding. Last check: 2007-10-14)
		T-s* is defined as the time scale at which the pattern of thetime-averaged radar rainfall hietograph is most similar to the pattern of the measured outlet runoff hydrograph.
		The existence of such similarity at a relatively stable time scale for a specific basin indicates that it is anintrinsic property of the basin and is related to its hydrological response.
		Relatively short time scales are found for the urban and arid basins (15-30 min), while for the rural basins longer time scale are identified (90-180 min).
	serials.cib.unibo.it /cgi-ser/start/it/spogli/df-s.tcl?prog_art=4246290&language=ITALIANO&view=articoli (347 words)

	glossary SIBA
		Time between separating of the melting elements and the faultless interruption of the
		Time period from the beginning of the failure current to the melting of the fuse elements.
		Summation of Melting Time and Arc Quenching Time of the Fuse.
	mdmetric.com /prod/siba/sibagloss.htm (1739 words)

	Method and apparatus for placing information on a medium while compensating for deviations from a characteristic time ...
		The period time error of the previous cycle is used to increase (or decrease) proportionally the print data output clock frequency for the present scan line when the motor angular velocity increased or (decreased) during the previous cycle.
		The period timing error is inversely proportional to the spinner angular velocity error.
		During the print time, the data stored in the buffer memory 32 is clocked out by the divided down output frequency of the voltage controlled oscillator (the output data clock, which varies directly with synchronous motor angular velocity).
	www.freepatentsonline.com /4786919.html (6564 words)

	ipedia.com: Time in physics Article (Site not responding. Last check: 2007-10-14)
		In or around 1665, when Isaac Newton derived the motion of objects falling under gravity, the first clear formulation for mathematical physics of a treatment of time began: linear time, conceived as a universal clock.
		One could say that time is a parameterization of a dynamical system that allows the geometry of the system to be manifested and operated on.
		It has been asserted that time is an implicit consquence of chaos (i.e.
	www.ipedia.com /time_in_physics.html (437 words)

	Conclusions (Site not responding. Last check: 2007-10-14)
		Characteristic time of the component A is practically constant in wide range of pump current.
		Full width at half-maximum level (FWHM) of the central peak of time coherence, which should corresponds to superradiance characteristic time, is shown in Fig. 4.
		Spectral investigations at low and room temperature, as well as time coherence measurements at RT allow estimating the characteristic time of superradiance pulse in these two modes.
	www.edu.ioffe.ru /register/?doc=nano2000/gordeev (927 words)

	Non-Dimensionalization (Site not responding. Last check: 2007-10-14)
		We rewrite the equations in terms of dimensionless variables by dividing out a constant characteristic size for the length, time, velocity, etc in the equations.
		Another time scale of interest will be related to the diffusion of heat.
		Given that your lab space and budget will allow you to build a tank that is 2 meters deep and you will use water, what velocities will you need in the lab to reproduce the conditions on the Wabash (where the water flows at between 1-10 meters/second).
	www.eas.purdue.edu /eas650/viscous-flow/node6.html (1117 words)

	Iron lines from Galactic Black Hole Candidates
		Since the viscous time is the timescale on which the mass accretion rate can change appreciably, we see that it is impossible to sample a range of mass accretion rates within a particular AGN on a human timescale.
		In fact, a reasonable estimate of the thermal time scale in a stellar mass fl hole corresponds to a few seconds, which often also corresponds to the time scale of the peak variability power in the X-ray lightcurve of such sources.
		Thus, although AGN are one thousand or more times further away than stellar mass fl holes, they are also up to one hundred million times more luminous and therefore are much more effectively observed over their characteristic dynamical time scales.
	www.astro.umd.edu /~chris/publications/html_papers/ironlines_plain/node46.html (330 words)

	Valve engineering - Check valve characteristic operating time (Site not responding. Last check: 2007-10-14)
		We further assumed a characteristic closing length of one pipe diameter.
		This is the time we assumed for check valve closure in the second iteration of the transient calculation.
		Thus, the fluid float model should provide a conservative estimate of the valve closing time since the longer it takes for the valve to close, the higher the fluid velocity at the time of closure and hence the larger the pressure surge.
	www.eng-tips.com /viewthread.cfm?qid=51237 (1453 words)

Try your search on: Qwika (all wikis)