wiktionarypar datumDatum is the singular form of data . Datum may also refer to Datum geodesy , a standard position or level that measurements are taken from Datum magazine Datum magazine , an Austrian monthly magazine Kavala or Datum, a city in ancient Macedonia Omne Datum Optimum , a papal bull issued by Pope Innocent II in 1139 disambig nl Datum fi Datum ur ... more details
Unreferenced date March 2009 Datum reference are a concept used in carpentry , metalworking , needlework , Geometric dimensioning and tolerancing GD&T and similar activities. In carpentry, an alternative, more common name is face side and face edge . The artisan nominates two straight edges on a workpiece as the datum edges , and they are marked accordingly. One convention is to mark the first datum edge with a single slanted line and the second with double lines . For most work, the datum references of the workpiece need to be Perpendicular square . If necessary they may be cut, planed or filed to make them so. In subsequent marking out, all measurements are then taken from either of the two datum references. Engineering In GD&T, datum reference frames are typically Three dimensional space 3D . Datum reference frames are used as part of the feature control frame to show where the measurement is taken from. A typical datum reference frame is made up of three planes. For example, the three planes could be one face side and two datum edges . These three planes are marked A, B and C, where A is the face side, B is the first datum edge, and C is the second datum edge. In this case, the datum reference frame is A B C. A B C is shown at the end of feature control frame to show from where ... before choosing which feature is A, B,or C. For this example, A is the primary datum, B is the secondary, and C is the tertiary datum. The primary datum controls the most degrees of freedom. The tertiary datum controls the least degrees of freedom. For this example, of a block of wood, Datum ... translation and 3 rotation about the 3D coordinate system . Datum A controls 3 translation along the Z axis, rotation about the x axis, and rotation about the y axis. Datum B controls 2 translation along the y axis and rotation about the z axis. Finally, Datum C controls 1 degree of freedom, namely the translation along the x axis. See also Datum geodesy Surface plate Exact constraint Woodworking ... more details
In the British Isles , an Ordnance Datum or OD is a Geodetic system Vertical data vertical datum used by an ordnance survey as the basis for deriving altitude s on map s. A spot height may be expressed as AOD for above ordnance datum . Usually mean sea level MSL is used for the datum. In particular In Great Britain , OD for the Ordnance Survey is ODN Ordnance Datum Newlyn , defined as the MSL at Newlyn in Cornwall between 1915 and 1921. Prior to 1915, OD was taken from the level of the Victoria Dock Liverpool Victoria Dock, Liverpool ODL . The difference between the different data varies across the country full details are available from the Ordnance Survery website below . In Northern Ireland , OD for the Ordnance Survey of Northern Ireland is Belfast Ordnance Datum , the MSL at Clarendon Lock, Belfast between 1951 and 1956. In the Republic of Ireland , OD for the Ordnance Survey of Ireland is Malin Ordnance Datum the MSL at Portmoor Pier, Malin Head , County Donegal , between 1960 and 1969 ref name osi http www.osi.ie gps overview irishgrid.asp Irish Grid Reference System from OSI website ref . Prior to 1970, Poolbeg Ordnance Datum was used the low water of spring tide at Poolbeg lighthouse , Dublin , on 8 April 1837. Poolbeg OD was about 2.7 m lower than Malin OD ref name osi . Tunnel Datum Tunnel Datum is a datum based on Ordnance Datum used in designing tunnels which pass below sea level. By using a lower datum as the base point, negative numbers can be avoided in calculations, eliminating a possible source of mistakes. for the London Underground , a tunnel datum of ODN &minus 100m is used ref cite web url http www.tfl.gov.uk assets downloads victoria Environmental Statement Main Report.pdf title Victoria Station Upgrade Environmental Statement Main Report date 2007 ... a depth of 60 m is 40m ATD above tunnel datum for the Channel Tunnel , a tunnel datum of ODN &minus ... pls htmldb f?p 111 7 15816778491873164759 NO 7 Ordnance Survey webpage on Datum height differences ... more details
Datum is an Austria n monthly magazine . Founded in 2004 by journalist Klaus Stimeder and businessman Hannes Weyringer, Datum is published by the Association to Promote Quality Journalism Verein zur F rderung des Qualit tsjournalismus eleven times a year. The wikt circulation circulation is 10.000 copies. The magazine aims to be an alternative in the Austrian media market, providing long articles with background information. Topics covered are Austrian politics , foreign policy , Mass media media and culture . In September 2005, Tyler Br l elected Datum best news magazine in his Fast Lane Media Awards . In his Financial Times column, he stated Austria s Datum is showing others how it should be done. With its slightly off, always iconic covers, matte paper stock and sharp lay outs it s become a cult favourite among art directors around the world. The website s a thing of beauty, too. External links de icon http www.datum.at Datum Website http www.myspace.com datummag Datum Myspace Category Austrian magazines Category Political magazines Category News magazines Category Publications blished in 2004 Europe poli mag stub de Datum Zeitschrift ... more details
charts. GPS receiving units also provide offsets to reconcile the Datum to satellite triangulation ... chart s are given relative to chart datum. Some height values on charts, such as vertical clearances under bridges or overhead wires, may be referenced to a different vertical datum, such as mean high water. Tide table s give the height of the tide above a chart datum. This makes it possible ... from the height of the tide. Using charts and tables that are not based on the same datum can result ... more details
In mathematics, the root datum donn e radicielle in French of a connected split reductive group reductive algebraic group over a field is a generalization of a root system that determines the group up to isomorphism. They were introduced by Michel Demazure in Grothendieck s S minaire de g om trie alg brique SGA III , published in 1970. Definition A root datum consists of a quadruple X sup sup , &Delta , X sub sub , &Delta sup v sup , where X sup sup and X sub sub are free abelian groups of finite Rank linear algebra rank together with a perfect pairing between them with values in Z which we denote by , in other words, each is identified with the dual lattice of the other . &Delta is a finite subset of X sup sup and &Delta sup v sup is a finite subset of X sub sub and there is a bijection from &Delta onto &Delta sup v sup , denoted by &alpha &rarr &alpha sup v sup . For each &alpha , &alpha , &alpha sup v sup 2 For each &alpha , the map taking x to x &minus x ,&alpha sup v sup &alpha induces an automorphism of the root datum in other words it maps &Delta to &Delta and the induced action on X sub sub maps &Delta sup v sup to &Delta sup v sup The elements of &Delta are called the roots of the root datum, and the elements of &Delta sup v sup are called the coroots . If &Delta does not contain 2&alpha for any &alpha in &Delta then the root datum is called reduced . The root datum of an algebraic ... root datum is a quadruple X sup sup , &Delta , X sub sub , &Delta sup v sup , where X sup sup ... datum, which is always reduced. Conversely for any root datum there is a reductive algebraic group. A root datum contains slightly more information than the Dynkin diagram , because it also determines the center of the group. For any root datum X sup sup , &Delta , X sub sub , &Delta sup v sup , we can define a dual root datum X sub sub , &Delta sup v sup , X sup sup , &Delta by switching the characters ... sup L sup G is the complex connected reductive group whose root datum is dual to that of G . References ... more details
Datum Peak Coord 77 58 S 163 51 E source GNIS display inline,title is a peak convert 1,575 m 1 high near the southwest extremity of Hobbs Ridge , rising above the south side of Gauss Glacier , convert 1.6 nmi km 0 west of Williams Peak , in Victoria Land . The name is one of a group in the area associated with surveying applied in 1993 by the New Zealand Geographic Board . It was named from Datum geodesy datum a practical representation of a reference system , a geodesy and surveying term defined by fixed coordinates. ref name gnis References Reflist refs ref name gnis cite gnis type antarid id 3542 name Datum Peak accessdate 2011 12 26 ref usgs gazetteer id 3542 Category Mountains of Victoria Land Category Scott Coast ScottCoast geo stub ... more details
system and Datum geodesy into Geodetic datum date July 2009 A geodetic datum plural datums , not data is a reference from which measurements are made. In surveying and geodesy , a datum is a set of reference ... drawing drafting , a datum is a reference point, surface, or axis on an object against which measurements are made. Image Chicago City Datum.jpg thumb right City of Chicago Datum Benchmark Reference datums A reference datum is a known and constant surface which is used to describe the location ... on the datum used to make the measurement. There are hundreds of locally developed reference datums ... American Datum of 1927 NAD 27 is the horizontal control datum for the United States that was defined .... Geodetic positions on the North American Datum of 1927 were derived from the coordinates of and an azimuth ... NAD27 is a local referencing system covering North America. The North American Datum of 1983 NAD 83 is The horizontal control datum for the United States, Canada, Mexico, and Central America, based on a geocentric origin and the Geodetic Reference System 1980 GRS80 . This datum, designated ... faq.shtml WGS84 WGS84 on the site of National Geodetic Survey ref The WGS84 datum, which is almost identical to the NAD83 datum used in North America, is the only world referencing system in place today. WGS84 is the default standard datum for coordinates stored in recreational and commercial GPS units. Users of GPS are cautioned that they must always check the datum of the maps they are using. To correctly enter, display, and to store map related map coordinates, the datum of the map must be entered into the GPS map datum field. Vertical datums A vertical datum is used for measuring the elevations ... etc. For the purpose of measuring the height of objects on land, the usual datum used is Mean ... the height of MSL, relative to a geodetic datum, will vary around the world, and even around one ..., the national vertical datum, Ordnance Datum Newlyn, is based on what was mean sea level at Newlyn ... more details
The Australian Height Datum is a geodetic datum for altitude measurement in Australia . According to Geoscience Australia , In 1971 the Sea Level mean sea level for 1966 1968 was assigned the value of 0.000m on the Australian Height Datum at thirty tide gauge s around the coast of the Australian continent. The resulting datum surface, with minor modifications in two metropolitan areas, has been termed the Australian Height Datum AHD and was adopted by the National Mapping Council as the datum to which all vertical control for mapping and other surveying functions is to be referred. ref http www.ga.gov.au earth monitoring geodesy geodetic datums australian height datum ahd.html Australian Height Datum Geoscience Australia ref ref http www.bom.gov.au lam glossary apagegl.shtml BoM glossary ref References reflist Australia gov stub Category Government of Australia Category Geography of Australia simple Australian Height Datum ... more details
Omne Datum Optimum Latin for Every perfect gift , a quotation from the Epistle of James was a Papal Bull issued by Pope Innocent II in 1139 that initially endorsed the Order of the Poor Knights of Christ and of the Temple of Solomon Knights Templar , in which the Templar Rule was officially approved, and pope papal protection given. ref name BarberBate2002 cite book author1 Malcolm Barber author2 A. K. Bate title The Templars selected sources url http books.google.com books?id rhTT3M9uWe4C&pg PA59 accessdate 5 May 2011 year 2002 publisher Manchester University Press isbn 978 0 7190 5110 4 pages 59 ref Additionally, Omne Datum Optimum promised all spoils from Muslim conquest to the Order, and made the Order exempt from tithes and taxes blockquote As for the things that you will receive from the spoils, you can confidently put them to your own use, and we prohibit that you be coerced against your will to give anyone a portion of these. blockquote Although Omne Datum Optimum was an unusual bull in and of itself, it was followed by Pope Celestine II s Milites Templi in 1144 and Pope Eugene III s Militia Dei in 1145, which together gave the Templars an extraordinary range of rights and privileges. Among other things, the Order was permitted to build its own churches, bury their dead on those church grounds and collect taxes on Templar properties once a year. The unique cemeteries constructed by the Templars proved to be extremely controversial. References Reflist External links http www.knightstemplarvault.com static.php?page omnedatumoptimum Omne Datum Optimum original Latin text with translation Category Knights Templar Category 1139 works Category 12th century papal bulls Category Documents of Pope Innocent II de Omne datum optimum es Omne datum optimum eo Omne datum optimum fr Omne datum optimum id Omne Datum Optimum it Omne Datum Optimum he mk Omne Datum Optimum nl Omne Datum Optimum ru Omne Datum Optimum sl Omne Datum Optimum ... more details
Geodesy The Sea Level Datum of 1929 was the vertical control datum geodesy datum established for vertical control surveying in the United States United States of America by the General Adjustment of 1929. The datum was used to measure elevation altitude above, and depression geology depression wikt depth depth below, mean sea level MSL . Mean sea level was measured at 26 tide gauges 21 in the United States and 5 in Canada . The datum was defined by the observed heights of mean sea level at the 26 tide gauges and by the set of elevations of all bench marks resulting from the adjustment. The adjustment required a total of 66,315 miles 106,724 km of leveling with 246 closed circuits and 25 circuits at sea level. Since the Sea Level Datum of 1929 was a hybrid model, it was not a pure model of mean sea level , the geoid , or any other equipotential surface. Therefore, it was renamed the National Geodetic Vertical Datum of 1929 NGVD 29 in 1973. The NGVD 29 was subsequently replaced by the North American Vertical Datum of 1988 NAVD 88 based upon the General Adjustment of the North American Datum of 1988. See also Altitude Datum geodesy Geodesy Mean sea level North American Vertical Datum of 1988 Storm Surge Topographic elevation Topography Reference ellipsoid Geoid External links cite web url http www.usgs.gov title United States Geological Survey home page cite web url http www.ngs.noaa.gov title U.S. National Geodetic Survey home page cite web url http www.ngs.noaa.gov CORS Proxy Glossary xml NGS Glossary.xml title Geodetic Glossary publisher U.S. National Geodetic Survey United States National Geodetic Survey cite web url http www.ngs.noaa.gov cgi bin VERTCON vert con.prl title Orthometric Height Conversion tool publisher U.S. National Geodetic Survey United States National Geodetic Survey Category 1929 in the United States Category Topography Category Geodesy Category Cartography Category Surveying Category Geodesic datums ms Datum Aras Laut 1929 ... more details
Datum is a term coined by Alfred North Whitehead to show the different variants of information possessed by actual entity . In the system process philosophy , datum is obtained through the events of Concrescence process philosophy concrescence . Every actual entity has a variety of datum. ref name Audi ed. Robert Audi. 1995, The Cambridge Dictionary of Philosophy. Cambridge The Press Syndicate of the University of Cambridge. ref ref name Cobb John B. Cobb and David Ray Griffin. 1976, Process Theology, An Introduction. Philadelphia The Westminster Press. ref References reflist Category Alfred North Whitehead Category Concepts in metaphysics id Datum ... more details
in the lengths and conversion values of the time. North American Datum of 1983 Because Earth ... region by region across the world. Clarke 1866, and North American Datum of 1927 with it, were surveyed ..., and it became the foundation for the North American Datum of 1983. Though generally GRS 80 and its ... NAD27 and NAD83 File Datum Shift Between NAD27 and NAD83.png thumb Datum Shift Between NAD27 and NAD83 ... to specify the datum along with the coordinates. The North American Datum of 1927 is defined by the latitude ... American Datum of 1983 is based on a newer defined spheroid GRS 80 it is an Earth centered or geocentric datum having no initial point or initial direction. North American Datum 83 and WGS84 The initial ... of a meter over much of the US. Each datum has undergone refinements with more accurate and later ... of North American Datum The US National Spatial Reference System of 2007 NSRS2007 , also called NAD83 2007 , is a refinement of the NAD83 datum using data from a network of very accurate GPS receivers at Continuously Operating Reference Stations CORS . See also North American Vertical Datum of 1988 ... dates date September 2010 Category Geodesy Category Cartographic projections de North American Datum ... more details
Geodesy The South American Datum SAD is a regional geodesic system for South America . SAD69 See pt Datum Caracteriza o do Sistema Geod sico Brasileiro SAD69 SAD69 at pt.wikipedia.org to translate from http pt.wikipedia.org wiki Datum Caracteriza.C3.A7.C3.A3o do Sistema Geod.C3.A9sico Brasileiro SAD69 Caracteriza o do Sistema Geod sico Brasileiro SAD69 Segundo as Especifica es e Normas Gerais para Levantamentos Geod sicos em Territ rio Brasileiro, anexo Resolu o COCAR n 02 83, de 21 07 1983, o Sistema Geod sico Brasileiro SGB definido a partir do conjunto de pontos geod sicos implantados na por o terrestre delimitada pelas fronteiras do pa s. Para o SGB, a imagem geom trica da Terra definida pelo elips ide do sistema geod sico de refer n cia SGR 67 , aceito e recomendado pela UGGI, em Lucerna , no ano de 1967. O South American Datum SAD foi estabelecido como o sistema geod sico regional para a Am rica do Sul, desde 1969. O SGB integra o SAD69 SAD 69 . Eles s o definidos a partir dos par metros Elips ide SGR 67 Orienta o geoc ntrica eixo de rota o paralelo ao eixo de rota o da Terra plano meridiano origem paralelo ao meridiano de Greenwich Orienta o topoc ntrica considerado como datum planim trico, o V rtice Chu da cadeia de triangula o do paralelo 20 Sul, em Minas Gerais latitude geod. 19 45 41,6527 S lat. astron. 19 45 41,34 S longitude geod. 48 06 04,0639 W long. astro. 48 06 07,80 W Azimute geod. 271 30 04,05 SWNE Az. astron. 271 30 05,42 SWNE para VT Uberaba ondula o geoidal N 0,0m Datum altim trico do SGB coincide com a superf cie equipotencial que cont m o n vel m dio do mar, definido pelas observa es maregr ficas tomadas em Imbituba, no litoral de Santa Catarina. Category South America Category Geodesy SouthAm stub ... more details
Unreferenced stub auto yes date December 2009 First appearance datum is a term used by geologist s and Paleontology paleontologists to designate the first oldest appearance of a species in the geologic record. In other words, FADs represent the geologically oldest fossil of a particular species that has yet been discovered. FADs are frequently used to designate segments in the Geologic time scale . For example, the beginning of the Tremadocian Stage of the Ordovician Period is marked by the first appearance FAD of the conodont Iapetognathus fluctivagus in the geologic record. This occurs in Stratigraphy bed 23 of the rock formation known as the Green Point section, located in western Newfoundland island Newfoundland , as well as in geologically correlated Stratum strata in many parts of the world. DEFAULTSORT First Appearance Datum Category Historical geology Category Paleontology Paleo stub Geology stub ... more details
File Nap reference waterlooplein.jpg thumb right 250px NAP Level in Amsterdam City Hall Normaal Amsterdams Peil NAP or Amsterdam Ordnance Datum is a vertical datum geodesy datum in use in large parts of Western Europe . Originally created for use in the Netherlands , it was adopted by Prussia in 1879 under the name Normalnull , and in 1955 by other European countries. File Huddesteen eenhoornsluis.jpg thumb left 150px The last remaining in situ Hudde benchmark in the Eenhoorn lock in Amsterdam Mayor Johannes Hudde of Amsterdam in a way came up with the idea after he expanded the seadike after a flood in Amsterdam in 1675. Of course a dike should be storm resistant to protect a city against flooding, and in this case a margin of 9 feet and 5 inches was deemed enough to cope with rising water. So he measured the waterlevel of the adjacent sea arm, Het IJ and compared it with the waterlevel in the canals within the city itself. He found that the water level at an average summer flood in the sea arm when the water level reaches its maximum, not counting storms was about the same as the level on the other side of the seadike, plus the margin of 9 feet and 5 inches. The waterlevel in the canals of Amsterdam which is quite constant called Amsterdam Peil AP , equaled the level at summer flood at sea in the sea inlet, which changes throughout the year. The Amsterdam level AP was in 1860 carried over to other areas in the Netherlands to replace locally used levels. In this operation an error was introduced which was corrected normalised between 1885 and 1894, resulting in the Normaal Amsterdam Peil NAP . Originally the zero level of NAP was the average summer flood water level in the IJ bay IJ just north of the centre of Amsterdam which was at the time, in 1684, the main shipping area, then still connected with the open sea . Currently it is physically realized by a benchmark in brass in the Opera Building cum City Hall of Amsterdam, which is a popular tourist attraction ... more details
single source date February 2012 Damnum iniuria datum was a delict of Roman law relating to the wrongful damage to property. It was created by the Lex Aquilia in the third century BC, and consisted of two parts chapter 1, which dealt with the killing of another s slave or certain types of animal and chapter three which related to other types of property. It was widely extended both by reference to the words of the statute themselves and by the Praetor . Like similar concepts in the modern law, it had to deal with changes in the way negligence was dealt with, issues of omission criminal law omission , and those of causation law causation . Basic form Damnum iniuria datum can be considered wrongful damage to property. ref name buckland580 The law of the Roman Empire Empire on this topic is mainly based on the Lex Aquilia , of which the date is uncertain, but earlier than the introduction of the contract of wikt mandate mandate . It does not seem that, as the Institutes rather suggest, and the Digest actually says, it superseded earlier provisions as matter of law, but it was of overwhelming practical importance and seems to have swamped them. On the other hand there was praetorian legislation on the matter, apart from extensions of this statute. But it is plain that this law. with its extensions, was much the most important part of the scheme of remedies. The words damnum iniuria datum mean damage unlawfully caused, but we get the expression actio damni iniuriae. ref name buckland580 The Lex Aquilia contained, besides a penalty for adstipulatores who fraudulently released the debtor and, perhaps, a vaguely indicated procedure for multa as an alternative, in the case which does concern us, two important provisions for a civil remedy for damage to property. Its first chapter provided that anyone who unlawfully killed another s slave or beast within the class of pecus, was liable to pay the owner the highest value the thing had had within the previous year. ref name buckland580 ... more details
Geodesy The North American Vertical Datum of 1988 NAVD 88 is the vertical control Datum geodesy datum of orthometric height established for vertical control surveying in the United States United States of America based upon the General Adjustment of the North American Datum of 1988. The NAVD 88 was established in 1991 by the minimum constraint adjustment of geodesy geodetic leveling observations in Canada , the United States , and Mexico . It held fixed the height of the primary tidal bench mark, referenced to the International Great Lakes Datum of 1985 local mean sea level height value, at Rimouski , Quebec , Canada . Additional tidal bench mark elevations were not used due to the demonstrated variations in sea surface topography, i.e., the fact that mean sea level is not the same equipotential surface at all tidal bench marks. The NAVD 88 replaced the National Geodetic Vertical Datum of 1929 NGVD 29 , previously known as the Sea Level Datum of 1929 . It is important to note that, while the computed elevation of some fixed point might differ depending on which datum is used, the elevation of that point relative to some other nearby point did not change with that datum change. See also Altitude Geodesy National Geodetic Vertical Datum of 1929 Sea Level Datum of 1929 Topographic elevation Topography Reference ellipsoid Geoid External links cite web url http www.usgs.gov title United States Geological Survey home page cite web url http www.ngs.noaa.gov title U.S. National Geodetic Survey home page cite web url http www.ngs.noaa.gov CORS Proxy Glossary xml NGS Glossary.xml title Geodetic Glossary publisher U.S. National Geodetic Survey United States National Geodetic Survey cite web url http www.ngs.noaa.gov cgi bin VERTCON vert con.prl title Orthometric Height Conversion tool publisher U.S. National Geodetic Survey United States National Geodetic Survey Category Geodesy Category Topography Category Surveying Category Geodesic datums ms Datum Tegak Amerika Utara 1988 ... more details
orphan date April 2010 A self locating datum marker buoy SLDMB is a drifting surface buoy designed to measure surface ocean currents. The design is based on those of the Coastal Ocean Dynamics Experiment CODE and Davis style oceanographic surface drifters National Science Foundation NSF funded experiments exploring ocean surface currents. The SLDMB was designed for deployment by United States Coast Guard USCG vessels in search and rescue SAR missions, and is equipped with a Global Positioning Satellite GPS sensor that, upon deployment in fresh or saltwater, transmits its location periodically to the USCG to aid in SAR missions. Additionally, SLDMB are deployed in oceanographic research in order to study surface currents of the ocean. This design has also been utilized by Nomis Connectivity for secure ocean based communications. Design The SLDMB is based on the Davis style drifter design, which attempts to minimize the effects of wind and surface waves. ref name Davis Davis, R. E. 1985 . Drifter Observations of Coastal Surface Currents During CODE The Method and Descriptive View. Journal of Geophysical Research, 90 C3 , 14. . ref This is accomplished by reducing the area above the ocean surface to small floats and an antenna. Below the surface is a series of drogue vanes to approximately 1 meter in depth, which catch the ocean current, along with electronic equipment that deploys the vanes and antenna, receives the GPS signal and transmits the location to the USCG. SLDMB construction varies by manufacturer, but those used by the USCG consists of four orthogonal drag vanes 0.5m wide and 0.7m high of nylon fabric. These are supported by PVC arms at top and bottom, which extend from a cylindrical hull that contains the electronic equipment. Small floats are attached to the end of each upper arm in order to maintain buoyancy, and a small antenna projects above the SLDMB. ref name Bang Bang, I., Mooers, C. N. K., Haus, B., Turner, C., Lewandowski, M. 2007 . Technical Report ... more details
ODL might be an acronym or abbreviation for Object Definition Language Observations of Daily Living Oklahoma Department of Libraries Open and Distance Learning Operational Document Library ITIL Ordnance Datum Ordnance Datum Liverpool disambig it ODL ... more details
Ostrovica is a village in Croatia in the Zadar County , in the Li ane Ostrovi ke municipality at coord 43 57 32 N 15 47 37 E . Near the village there is a ruined medieval castle of the ubi noble family. External links http www.destinacije.com datum nav.asp?lang slo&pg 1&datum 25.08.2007.&cp 21&s Next Village of Ostrovica http www.destinacije.com datum nav.asp?lang hr&pg 1&datum 25.08.2007.&cp 4&s Next Ruins of Ostrovica Castle Category Populated places in Zadar County Zadar geo stub bs Ostrovica hr Ostrovica Li ane Ostrovi ke sl Ostrovica, Hrva ka sr ... more details
About the geodetic datum ED 50 in pharmacology Effective dose pharmacology Unreferenced date February 2007 Geodesy ED 50 European Dat 1950 is a datum geodesy geodetic datum which was defined after World War II for the international connection of geodetic network s. Some of the important battles of World War II were fought on the borders of Germany , the Netherlands , Belgium and France , and the mapping of these countries had incompatible latitude and longitude positioning. This led to the setting up of ED50 as a consistent mapping datum for much of Western Europe . It was, and still is, used in much of Western Europe apart from Great Britain , Ireland , Sweden and Switzerland , which have their own datums. It used the International Ellipsoid of 1924 John Fillmore Hayford Hayford Ellipsoid of 1909 Earth radius radius of the Earth s equator 6378.388 km, flattening 1 297 . That spheroid was an early attempt to model the whole Earth and was widely used all over the world up to the 1980s, when GRS80 and WGS84 were established. Many national coordinate systems of Gauss Kr ger coordinate system Gauss Kr ger are defined by ED50 and oriented by means of geodetic astronomy . Up to now it has been used in data base s of gravity field, cadastre , small surveying networks in Europe and America, and by some developing countries with no modern baselines. The geodetic datum of ED50 is centred at the Munich Frauenkirche in southern Germany , where the approximate centre of the Western Europe ... Mercator coordinate system UTM up to the 1980s. Datum shift between ED50 and WGS84 The longitude and latitude ... more longitude. The datum shift for the Universal Transverse Mercator grid is different. The eastings ... Britain datum OSGB36 . For Ireland, the Irish Transverse Mercator . The Sweden datum RT90 . The Switzerland datum CH1903 . The French datum Nouvelle triangulation de la France NTF Category Geodesy Category Geographic coordinate systems ca European Datum 1950 de Europ isches Datum 1950 es ED50 it ED50 ... more details
ODN can be Optical Distribution Network the physical fibre and optical devices that distribute signals to users in a telecommunications network ODN ISP a Japanese Internet Service Provider ODN Is short for the Orbital Data Network , a leader in advanced satellite communications for emergency responders Ordnance Datum Newlyn , the mean sea level height datum in Great Britain OXUS Development Network a French Micro Finance institution CpG Oligodeoxynucleotide also known as a CpG ODN, has immunostimulatory properties disambig it ODN ... more details
In hydrology , crest is the highest level above a certain point the datum point, or reference point that a river will reach in a certain amount of time. This term is usually limited to a flooding event and from ground level . Category Hydrology geo term stub hydrology stub ... more details
Orphan date April 2010 The New Zealand Map Grid NZMG is a map projection based on the New Zealand Datum geodesy Geodetic Datum 1949. ref http www.linz.govt.nz geodetic datums projections heights projections new zealand map grid index.aspx , Land Information New Zealand ref It has now been replaced by the New Zealand Transverse Mercator 2000 projection, which is based on the New Zealand Geodetic Datum 2000 using the GRS80 reference ellipsoid. ref http www.linz.govt.nz geodetic datums projections heights projections new zealand transverse mercator 2000 index.aspx , Land Information New Zealand ref This is the grid setting used for GPS in New Zealand. References Reflist Category Geography of New Zealand ... more details
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