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Topic: Haversine


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In the News (Thu 24 Dec 09)

  
 Flow Constraint and Loading Rate Effects on Prosthetic Liner Material and Human Tissue Mechanical Response - Journal of ...   (Site not responding. Last check: 2007-11-06)
The haversine waveform load-controlled tests increased the load from 50 N to 550 N in 10.0, 1.0, and 0.2 seconds; loading rates of 0.1 Hz, 1.0Hz, and 5.0 Hz.
One-cycle haversine loading rates of 0.1 Hz, 1.0 Hz, and 5.0 Hz were used to simulate an amputee loading the liner material at low, moderate, and high activity levels.
The haversine waveform load-controlled tests increased the load from 50 N to 550 N in 10.0, 1.0, and 0.2 seconds (loading rates of 0.1 Hz, 1.0 Hz, and 5.0 Hz).
www.oandp.org /jpo/library/2000_01_015.asp   (6269 words)

  
 Proximity Searches for Fun and Profit
For all intents and purposes, the haversine is the most accurate way to calculate distance on a sphere.
That's why, if you have any sense of irony, you will already have guessed that even though the haversine method is the most accurate way to determine distance, it is also by far the slowest.
Ranking the methods by execution time, you find that haversine is slowest, followed by the law of spherical cosines, followed by the Pythagorean theorem.
www.webmonkey.com /webmonkey/05/32/index4a_page5.html?tw=programming   (677 words)

  
 High power factor switched DC power supply - Patent 5532918
The output of the full-wave rectifier 116 can be called a "haversine," and has a frequency of twice the frequency of the AC line voltage from the power line.
The haversine is provided to input terminal "A" of the ratiometric multiplier 110, as well as to a feedback circuit 118 for controlling the gain of amplifier 114.
The AGC CONTROL signal causes the haversine to have a peak magnitude that is substantially equal to the constant voltage input, i.e., the two volt reference, to the error amplifier 120.
www.freepatentsonline.com /5532918.html   (6055 words)

  
 Pacer analyzer - Patent 4476869
a second multiplying digital-to-analog converter, responsive to the supervising processing means, for producing a haversine signal of varying rate, said second digital-to-analog converter further responsive to said variable reference signal for varying the amplitude of said haversine signal.
Pacer output signal BB is presented to a trigger circuit 78, which may conventionally be a comparator with a hysteresis response such as a Schmitt trigger, to form an on-off signal GG, indicating the event of a pacer output signal.
As hereinabove described, the test wave, or haversine wave, generated by the pacer system analyzer is not determinative of pacer performance because of the many frequency characteristics of an actual heartbeat which greatly change the waveform after passage through conventional pacer filter circuitry.
www.freepatentsonline.com /4476869.html?highlight=4250884   (16269 words)

  
 Computer Code
The spherical and plane trigonometric laws pertaining to a triangle: cosine, haversine, sine (long and short forms), tangent, half-tangent, Napier (one and two), and area are provided as functions, which may be cut and pasted into an application.
We may combine the haversine and sine (short form) laws, to obtain a consistent additional angle (or side, in the case of the dual).
Instead of the law of haversines, one may employ the corresponding law of half-tangents.
www.rism.com /Trig/computer_code.htm   (1214 words)

  
 Math Forum - Ask Dr. Math   (Site not responding. Last check: 2007-11-06)
The form of the Haversine Formula that uses the atan2() function is probably best for programming, assuming your programming language has an atan2() function.
First, a word about the meaning of "haversine." This is the name of one of several lesser-known trigonometric functions that were once familiar to navigators and the like.
The HAVERSINE is half the versine, or (1-cos(A))/2.
mathforum.org /library/drmath/view/51879.html   (1355 words)

  
 [No title]
For the mathematically inclined a haversine is an artificially produced ratio where Haversine A = 1/2(1 - Cos A).
Unlike all other trigonometric ratios the value of the haversine is positive (+) from 0 degrees to 360 degrees and this fact lets us produce a formula where all that is required is a bit of simple addition.
This is an annual publication and, amongst other information, contains all that is required to let you establish the GHA and Declination of the sun and the moon as well as the planets and stars of navigational significance.
www.opensacandaga.com /navigation/Celestial3.htm   (2490 words)

  
 Radius of a zip code
I wrote a haversine() function that uses the Haversine Formula to calculate the great circle distance between two points on a sphere (assuming the earth is a perfect sphere is accurate enough for my uses).
> I wrote a haversine() function that uses the Haversine Formula to > calculate the great circle distance between two points on a sphere > (assuming the earth is a perfect sphere is accurate enough for my uses).
The distance operator in contrib/earthdistance got changed to use haversine instead of the naive formula in 7.3.
www.webservertalk.com /message94786.html   (1856 words)

  
 Calculate distance and bearing between two Latitude/Longitude points using Haversine formula
The Haversine formula remains particularly well-conditioned for numerical computation even at small distances – unlike calculations based on the spherical law of cosines.
Note (July 2005): on further investigation, I’ve found that the numeric precision of JavaScript is so good (15 significant figures using IEEE 754 floating-point numbers) that the simple spherical law of cosines formula gives well-conditioned results down to distances as small as around 1 metre.
In view of this it is probably worth, in most situations, using either the simpler law of cosines or the more accurate ellipsoidal Vincenty formula in preference to Haversine!
www.movable-type.co.uk /scripts/LatLong.html   (1136 words)

  
 Math Forum - Ask Dr. Math   (Site not responding. Last check: 2007-11-06)
I know it takes more trig calculations, and if one point is fixed, the one trig function in the planar calculation can be pre-calculated, so there may be very good reasons for using the planar calculation whenever possible.
I would use the Haversine formula for distance when distances may be quite small: Deriving the Haversine Formula http://mathforum.org/library/drmath/view/51879.html If you'd like, I could generate a table showing the errors for various distances and directions from a given point.
I am programming this in SAS and need to calculate the distance 1.3 billion times in the program (this simulation is run every day too), so efficiency in calculations will factor in.
mathforum.org /library/drmath/view/62720.html   (982 words)

  
 Untitled
And more: the haversine is extraordinary suitable at this place, as 5-digit log tables of it suffice to obtain the accurate result within the range of some arc-seconds.
As you know, the haversine of an angle is the squared sine of the half angle.
The third asset of Bruce is his method of obtaining reference lunar distances that are to be compared with the cleared distance for obtaining G.M.T. One would say that after these distances had disappeared from nautical almanacs in 1907-1924, the death of lunars was imminent.
www.starpath.com /catalog/books/StarkTables.htm   (1646 words)

  
 uprop
This example shows how this can be done to program in a haversine function such as the one used in the analysis of pavements.
The source file was provided by Fenella Long in the UCB asphalt pavement research group.
For the Haversine function implementation shown unumb needs to be = 1 and type is simply ignored.
www.ce.berkeley.edu /~sanjay/FEAP/uprop.html   (346 words)

  
 GIS FAQ Q5.1: Great circle distance between 2 points
Haversine Formula (from R.W. Sinnott, "Virtues of the Haversine", Sky and Telescope, vol.
The great circle distance d will be in the same units as R. The min() function protects against possible roundoff errors that could sabotage computation of the arcsine if the two points are very nearly antipodal (that is, on opposide sides of the Earth).
Under these conditions, the Haversine Formula is ill-conditioned (see the discussion below), but the error, perhaps as large as 2 km (1 mi), is in the context of a distance near 20,000 km (12,000 mi).
www.movable-type.co.uk /scripts/GIS-FAQ-5.1.html   (1625 words)

  
 Haversine
Haversine: A waveform that is sinusoidal in nature, but consists of a portion of a sine wave superimposed on another waveform.
The input current waveform to a typical off-line power supply has the form of a haversine.
This Electronics Dictionary is a free service provided by Sunpower UK, and includes an ongoing list of current electronics vocabulary in use today.
www.sunpower-uk.com /pages/Haversine/havsin/default.htm   (148 words)

  
 Technical Glossary - "H"
Haversine: An inverted cosine offset by half its amplitude.
A continuous haversine would look like a sine wave whose negative peak is at zero volts.
Head Loss: The loss of pressure in a flow system measured using a length parameter (i.e., inches of water, inches of mercury).
www.flw.com /glossary/glossary_h.php   (1437 words)

  
 Problem G - Mars Buggy
This formula, although correct, suffers from accuracy errors when implemented on a computer (or calculated by hand using slide rule or lookup tables).
To cope with the inaccuracy, navigators use a special set of trignometric functions, one being the versine which is defined as: versine(x) = 1 - cos(x), and an other, haversine, being half that value.
The so called 'Haversine Formula' uses this function to calculate the distance, without the loss of accuracy from the formula stated above:
acm.uva.es /p/v110/11018.html   (1082 words)

  
 Thrusters
Used for development and test of frontal and side airbag sensors, the LS Series thrusters are designed to produce highly accurate and repeatable acceleration pulses in the horizontal plane.
Pulse types include classical, haversine, halfsine waveforms, as well as reproduction of actual crash waveforms imported as ACSII amplitude/time history or as a transient capture.
Typical Haversine test waveform used for airbag sensor testing (10 ms, 20 miles per hour).
www.udco.com /lsseries.htm   (703 words)

  
 Agilent Technologies | Agilent Developer Network | Function / Arbitrary Waveform Generator Visual Basic Code Samples   (Site not responding. Last check: 2007-11-06)
This program uses the arbitrary waveform function to download and output a square wave pulse with a calculated rise time and fall time.
By adding an offset voltage to the burst, a haversine is created.
This sample program sets up a burst waveform with a 270 degree starting phase, and by adding an offset voltage to the burst, a haversine is created.
adn.tm.agilent.com /index.cgi?CONTENT_ID=1490   (1156 words)

  
 Spherical Trigonometry   (Site not responding. Last check: 2007-11-06)
I use haversines - which is a contraction of half-versed sines - for ease as they handle angular measures up to 180° without any problems.
So if we have an angle A and wish to convert it to a haversine we use the following little formula which any trig calculator should be able to do in a jiffy:
These formulae will allow you to solve for the distance AB and for the angle A (or B with some manipulation).
www.dynagen.co.za /eugene/where/sphertrg.html   (542 words)

  
 GPS2CAD
There are two commonly used methods to find bearing and distance between two points on earth.
However because of the math involved, it doesn’t work well on short distances, the type you work with on a hand held gps unit.
The Haversine method of calculations is also widely known and used, but somewhat newer.
www.gps2cad.com /support/knowledgebase.htm   (377 words)

  
 Calculating Distances and Bearings from GPS Waypoints in Lat/Long
This formula calculates great-circle distances between the points; great circle distance is the shortest distance between two points traveled over the earth's surface.
The Haversine Formula calculation uses a mean radius for the Earth of 6,371km, which adds some inherent error to the calculation (between 0.11% at the equator, and 0.24% at the poles).
However, in our region of the globe, the radius of the earth is very close to the mean radius used for the calculations that the error in these calculations is closer to the order of 0.05%.
www.sinc.sunysb.edu /Stu/mwhitake/latlong.htm   (347 words)

  
 Trigonometry
The Law of Cosine is the only one which does not have a limit; but it may be obtained from the limit of the Law of Haversines.
As a consequence, each of the following equations also provides the corresponding plane equation, provided that the sides are involved homogeneously exclusively as their sines, haversines (each of which counts as two), or tangents.
Law of Haversines Since the haversine function has fallen into obscurity, we incorporate its definition (in terms of the sine function), as an alternative.
www.rism.com /Trig/Trig02.htm   (8737 words)

  
 Amazon.com: "haversine pulse": Key Phrase page   (Site not responding. Last check: 2007-11-06)
A more realistic model, referred to as an asymmetric haversine pulse, combines opposite halves of two separate haversine waves.
A shock pulse may range from a simple step function or haversine pulse to a brief but complex waveform composed of several frequencies.
A typical haversine pulse loads used has a load duration of 0.1 seconds applied between 20 to 30 applications per minute.
www.amazon.com /phrase/haversine-pulse   (571 words)

  
 GIS FAQ Question --Q5.1--   (Site not responding. Last check: 2007-11-06)
The Haversine Formula is one result of such
The Haversine Formula can be expressed in terms of a two-argument
be possible for the "sqrt(a)" term in the haversine formula to exceed
www.worleys.com /ieee80211/gisfaq.htm   (3002 words)

  
 Haversine SQL trouble - Distance between zip codes - MS SQL
Haversine SQL trouble - Distance between zip codes - MS SQL
Haversine SQL trouble - Distance between zip codes
I am trying to use the haversine function to find the distance between
www.thescripts.com /forum/thread81371.html   (849 words)

  
 Haversine SQL trouble - Distance between zip codes - 8
Haversine SQL trouble - Distance between zip codes - 8
Thread: Haversine SQL trouble - Distance between zip codes
Re: Haversine SQL trouble - Distance between zip codes
www.thescripts.com /forum/post275980-8.html   (132 words)

  
 NYSID Licenses Omnicom Group's Haversine Insurance as 11th Captive   (Site not responding. Last check: 2007-11-06)
NYSID Licenses Omnicom Group's Haversine Insurance as 11th Captive
New York's Superintendent of Insurance Gregory V. Serio announced that the State Insurance Department has licensed the Haversine Insurance Company as a captive insurance company, insuring the risks of Omnicom Group Inc.
The bulletin described Omnicom as a "strategic holding company that manages a portfolio of global market leaders," in advertising, marketing services, specialty communications, interactive/digital media and media buying services.
www.insurancejournal.com /news/east/2003/10/22/33407.htm?print=1   (239 words)

  
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Generates sine, square, triangle, ramps, haversine, havertriangles, AM(sine), and DC waveforms
The GP1665W function generator is a programmable instrument capable of generating predefined sine, square, triangle, ramps, haversine, havertriangles, AM(sine), and DC waveforms.
The firmware is customized for the Wavetek 178 command set.
www.geotestinc.com /products/allproducts/gp1665w/gp1665w.asp   (951 words)

  
 aversiune - Definitions from Dictionary.com
Did you mean haversine (in dictionary) or Haversine (in encyclopedia)?
Would you like to search the encyclopedias, or search the Web for aversiune?
HighBeam Research - 32 million documents from leading publications
dictionary.reference.com /browse/aversiune   (51 words)

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