wiktionarypar gridGrid or The Grid may refer to In entertainment and media The Grid , an electronic dance group Kevorkian Death Cycle , a music group formerly called Grid The Grid arcade game The Grid arcade game , a 2001 third person shooter The Grid TV series The Grid TV series from 2004 The Grid US TV series The Grid US TV series , an American TV series Mobil 1 The Grid , a motorsport magazine TV show The Grid The Outer Limits The Grid The Outer Limits , an episode of the science fiction series Grid album Grid album , the eighth original album by the Japanese band m.o.v.e. Race Driver Grid , a racing video game Spooks 3 Games The Grid Spooks 3 Games The Grid , video game based on the television show Spooks The grid, the virtual environment of the game Second Life List of Institute of Electrical and Electronics Engineers publications IEEE Grid , a monthly publication of the Institute of Electrical and Electronics Engineers The Grid , the computerized virtual world in which the Tron franchise Tron franchise exists The Grid newspaper The Grid newspaper , an alternative weekly newspaper in Toronto, Ontario In science and technology Electrical grid , a network for delivering electricity Grid computing , the application of a network of computers to a single problem Control grid , an electrode to control electrons in vacuum tubes Tetrode Grids Screen grid , a grid used in vacuum tubes to reduce capacitance Suppressor grid , a grid used in vacuum tubes to suppress secondary emission GRiD Systems Corporation , founded in 1979, developer of range of laptops Grid Compass , the first laptop computer released in 1982 Lattice graph or grid graph , a graph formed from a regular lattice of vertices ESRI grid file format for geographic information systems GRID1 , GRID2 , human genes ... As an acronym Gay related immune deficiency GRID , an early suggested name for AIDS Global Release Identifier GRid , a music industry identifier from the RIAA and IFPI In geography ... more details
On The Grid The Grid single On The Grid is the debut single by English electronic artists The Grid , which was released in 1989 on EastWest Records EastWest Records UK . It was released as 12 single sided white label promotional vinyl. Written by Lime band Lime member Lime band Denis LePage . Produced by The Grid . Track listing Promotional Single Sided White Label 12 cat GRID1 On The Grid 6 50 DEFAULTSORT On the Grid Category 1989 singles Category The Grid songs Category Debut singles ... more details
Infobox musical artist See Wikipedia WikiProject Musicians name In Grid image In Grid in Sopot 2009.jpg caption In Grid in Sopot , Poland , August 2009 background solo singer birth name Ingrid Alberini alias In Grid birth date Birth date and age 1978 9 11 death date origin Guastalla , Italy genre Alternative .... Career In Grid whose parents named her after Ingrid Bergman began singing in her native Northern Italy ... s title In Grid Tu es foutu accessdate 2011 07 19 work italiancharts.com ref ref name musicline The second single, In Tango , entered the sales charts in Germany, Denmark and the Netherlands. In Grid s debut album Rendez Vous In Grid album Rendez Vous made a modest performance in Sweden and German ... airplay in Poland. 2004 saw the release of In Grid s second effort, a cover album deriving from tradition of French popular music. It was called La Vie en Rose In Grid album La Vie en Rose , after dith ... to repeat the considerable success of Rendez Vous . However, In Grid s popularity remained high and growing ... , In Grid s third studio album, appeared in the market in the second half of 2005. Although it didn t perform well in the charts, the first single, Mama Mia In Grid song Mama Mia , became a major hit ... declining in Europe, In Grid still remained successful in Poland, what became her main market. In Grid released her next album, Passion In Grid album Passion , in 2009. It was promoted by three singles ... title In grid Music Charts accessdate 2011 07 19 work acharts.us ref rowspan 2 Certifications rowspan ...?interpret In Grid title Discographie In Grid accessdate 2011 07 19 work austriancharts.at ... summary artist IN GRID longplay title Chartverfolgung IN GRID Longplay accessdate 2011 ... showinterpret.asp?interpret In Grid title Discography In Grid accessdate 2011 07 19 work ... ref name swedishcharts cite web url http swedishcharts.com showinterpret.asp?interpret In Grid title Discography In Grid accessdate 2011 07 19 work swedishcharts.com ref rowspan 1 Swiss Music Charts SWI ... more details
For other uses of the title The Grid, see Grid disambiguation . Refimprove date October 2010 Infobox musical artist See Wikipedia WikiProject Musicians name The Grid image caption image size background group or band alias origin England genre House music House br Techno music Techno br Ambient house years active 1988 1996 br 2003 present label East West Records East West , Virgin Records Virgin , Deconstruction Records Deconstruction , Some Bizzare Records Some Bizzare associated acts Soft Cell , Chris Braide website current members Richard Norris musician Richard Norris br David Ball musician David Ball past members Sacha Rebecca Souter singer vocals notable instruments The Grid are an England ..., Blackpool , Lancashire keyboards Sacha Rebecca Souter Vocals Biography The Grid formed in 1988 and had ... s 1994 album Evolver The Grid album Evolver reached 14 in the UK Albums Chart . ref name ... with female singer Misty Woods , before writing and recording new material as the Grid. A single, Put Your Hands Together , was released in 2007 and an album, Doppelg nger The Grid album Doppelg nger ... Records 1992 456 album 456 align center Virgin Records 1994 Evolver The Grid album Evolver ref http ... 1995 Music for Dancing align center 67 Deconstruction Records 2008 Doppelg nger The Grid album Doppelg nger ... name British Hit Singles & Albums 1989 On the Grid promo only align center 1989 Intergalactica promo ... 1993 Swamp Thing The Grid song Swamp Thing align center 3 1994 Rollercoaster align center 19 1994 ... 8001 people mattski GridGrid Central An Unofficial Page for The Grid http www.banjohangout.org archive 153859 Death of Roger Dinsdale. Allmusic class artist id p44881 pure url yes The Grid on allmusic.com http www.myspace.com gridmusic The Grid MySpace page DEFAULTSORT Grid, The Category English ... British techno music groups Category Remixers Category Electronic music duos de The Grid pl The Grid ru The Grid sv The Grid ... more details
Unreferenced date January 2008 Infobox television show name In the Grid image caption genre Game show runtime 30mins inc. comms creator Endemol UK starring Les Dennis network Five channel Five country United Kingdom first aired Start date 2006 10 30 df y last aired End date 2007 2 2 df y num episodes 70 producer Initial West related In the Grid was a game show that airs on UK broadcaster Five channel Five at 6.30pm week nights. It first aired on Monday 30 October 2006. In the Grid was hosted by Les Dennis and was produced by Initial West, one of the Endemol UK companies. Format Round 1 The Grid The reigning champion gets to pick from a 3x3 board from A1 to C3 , each square hiding a name. The selected square reveals the name of the champion s new opponent. If there is no reigning champion only the case where the previous champion has won five games and has to retire , the selection is made randomly by the Grid. The first person selected is treated as the reigning champion , and the second ... her money. The number of times that each colour occurs in the Grid varies between episodes. Typically ... Grid. The loser doesn t keep the money they have accumulated to that point. Round 2 The Mega Grid ... 50,000 on one occasion 25 December 2006 . To win, they must choose squares on a 5x5 grid labelled A1 to E5. The grid contains around 20 to 23 gold squares, and 2 to 5 bankrupt squares. The first move ... causes the player to lose all their winnings from that episode. Thereafter, the moves are optional. The Grid ... played the Mega Grid 5 times, they have to retire . So far, five contestants have gone all the way to the end on the Mega Grid and four of these have been successful. Viewer s Competition After the main ..., which had included a game of In the Grid in their software, In the Grid would return for a second series ... website is down. External links http www.five.tv inthegrid In the Grid at five.tv UKGameshow page index.php In the Grid Category Channel 5 UK television programmes Category British game shows ... more details
Refimprove date May 2007 A suppressor grid is a grid used in a thermionic valve also called vacuum tube to suppress secondary emission . A suppressor grid is also called the antidynatron grid, as it helps to reduce the dynatron effect. Placement In its simplest form, a suppressor grid, typically of coarse structure, is interposed between the screen grid and the anode Plate electrode plate of a tetrode , turning it into a pentode . Electrical connection of grid The suppressor grid is usually connected to the cathode and more often than not, this connection is made within the glass envelope. Because the grid is negatively charged relative to both the anode and the screen grid, it repels any secondary electrons back to the anode preventing them from contributing to the screen grid current, and to any negative resistance characteristic. DEFAULTSORT Suppressor Grid Category Vacuum tubes Category Electrodes ar de Bremsgitter fr Grille d arr t nl Keerrooster ... more details
TOCright National Grid can refer to Electric power transmission systems National Grid Great Britain , the electricity transmission network of Great Britain. National Grid Malaysia , the electricity transmission network of Malaysia. National Grid New Zealand , the electricity transmission network of New Zealand. Companies National Grid plc , a United Kingdom based utilities company with an important subsidiary in the United States Power Grid Corporation of India Limited Geosurvey Spatial referencing systems National grid reference system , also known as Spatial referencing systems, a geospatial set of coordinates that are set by governments to set maps and other geographic tools with The Ordnance Survey National Grid The Irish national grid reference system The United States National Grid Other National Grid for Learning , a former UK government funded educational programme disambig de National Grid Begriffskl rung ... more details
A grid code is a technical specification which defines the parameters an electricity generation electricity generating plant has to meet to ensure proper functioning of the electrical grid http www.nationalgrid.com uk Electricity Codes gridcode gridcodedocs . The authority responsible for the electricity distribution specifies the grid code which may vary from country to country. Independent power producers Independent power producer s like photovoltaic power station s or wind farm s have to comply with the grid code. See also RISSP External links http www.terna.it default Home en electric system grid code tabid 502 Default.aspx Italian grid code http www.nationalgrid.com uk Electricity Codes gridcode gridcodedocs GB grid code DEFAULTSORT Grid Code Category Electric power Category National Grid UK Electric power stub ... more details
Off the grid may refer to Off the grid , housing not connected to public utilities Off the Grid song , the first single from the Beastie Boys album The Mix Up Off the Grid with Les Stroud , a 2006 documentary of a family s building of an off the grid home Warren Miller s Off the Grid , a 2006 film about winter sports from Warren Miller director Warren Miller Entertainment Off the Grid Stargate SG 1 , an episode of the television series Stargate SG 1 Off the Grid Life on the Mesa , a 2007 documentary film Living outside the system of conventional society , such as by not using an identity document or Social Security number disambig ... more details
notability date January 2012 confusing date September 2011 The Semantic Grid refers to an approach to grid computing in which information, computing resources and services are described using the semantic data model . In this model the data and metadata are expressed through facts small sentences . Therefore it becomes directly understandable for humans. This makes it easier for resources to be discovered and joined up automatically, which helps bring resources together to create virtual organization grid computing virtual organizations VOs . The descriptions constitute metadata and are typically represented using the technologies of the Semantic Web , such as the Resource Description Framework RDF . By analogy with the Semantic Web, the Semantic Grid can be defined as an extension of the current Grid in which information and services are given well defined meaning, better enabling computers and people to work in cooperation. This notion of the Semantic Grid was first articulated in the context of e Science , observing that such an approach is necessary to achieve a high degree of easy to use and seamless automation enabling flexible collaborations and computations on a global scale. The use of Semantic Web and other knowledge technologies in Grid applications is sometimes described as the Knowledge Grid . Semantic Grid extends this by also applying these technologies within the Grid middleware . Some Semantic Grid activities are coordinated through the Semantic Grid Research Group of the Global Grid Forum . See also Standards Semantic Web Rule Language SWRL Application areas ... e Tourism External links http www.semanticgrid.org Semantic Grid website http www.ontogrid.net ONTOGRID EU funded research project for enabling semantic grid applications http www.dagstuhl.de 05271 Semantic Grid Dagstuhl Seminar http www.springerlink.com index r3w7115088ggw883.pdf Semantic Grid oriented to eTourism Category Grid computing Category Semantic Web de Semantic Grid ... more details
Unreferenced date December 2009 Image Cartesian grid.svg thumb right Example of a Cartesian grid . Image Regular grid.svg thumb right Example of a regular grid . Image rectilinear grid.svg thumb right Example of a rectilinear grid . Image Curvilinear grid.svg thumb right Example of a curvilinear grid . Image Example curvilinear grid.svg thumb right Another example of a curvilinear grid . A regular grid is a tessellation of n dimensional Euclidean space by congruent parallelotope s e.g. bricks . Grids of this type appear on graph paper and may be used in finite element analysis as well as finite volume method s and finite difference method s. Since the derivatives of field variables can be conveniently expressed as finite differences, structured grids mainly appear in finite difference methods. Unstructured grid s offer more flexibility than structured grids and hence are very useful in finite element and finite volume methods. Each cell in the grid can be addressed by index i, j in two dimension s or i, j, k in three dimensions, and each vertex geometry vertex has coordinate s math i cdot dx, j cdot dy math in 2D or math i cdot dx, j cdot dy, k cdot dz math in 3D for some real numbers dx , dy , and dz representing the grid spacing. Related grids A Cartesian grid is a special case where the elements are unit square s or unit cube s, and the vertices are integer point s. A rectilinear grid is a tessellation by rectangles or parallelepipeds that are not, in general, all congruence geometry congruent to each other. The cells may still be indexed by integers as above, but the mapping from indexes to vertex coordinates is less uniform than in a regular grid. An example of a rectilinear grid that is not regular appears on logarithmic scale graph paper . A curvilinear grid or structured grid is a grid with the same combinatorial structure as a regular grid, in which the cells ... coordinate system Integer point Unstructured grid Geometry stub DEFAULTSORT Regular Grid Category ... more details
Orphan date April 2011 COI date March 2011 Language Grid is a multilingual service platform on the Internet, developed by Language Grid Project, National Institute of Information and Communications Technology ... Grid was started in April 2006, led by Professor Toru Ishida, Department of Social Informatics of Kyoto University . Concept The Language Grid is developed to increase the accessibility and usability ... Web services . Architecture The Language Grid consists of four service layers P2P Grid Layer, Atomic Service Layer, Composite Service Layer and Application System Layer. ref Language Grid Service Layer http langrid.nict.go.jp en service layer.html ref Software Language Grid related software includes the Service Grid Server Software, ref Service Grid Server Software http servicegrid.net oss project ... en language service.html ref and Language Grid Toolbox. ref Language Grid Toolbox http servicegrid.net oss project en toolbox.html ref The development of Language Grid related software is managed ... of Kyoto University started single operation of the Language Grid in December 2007 for non profit purpose and research purpose, which is named as Language Grid Kyoto Operation Center. ref Language Grid ... countries and regions had joined the Kyoto Language Grid. ref List of Users of Language Grid Kyoto ... are registered in the Kyoto Language Grid. ref List of Language Services in Kyoto Language Grid http ... Grid was started by the National Electronics and Computer Technology Center of Thailand, which is called Language Grid Bangkok Operation Center. ref Language Grid Bangkok Operation Center http ... of Kyoto University started the federated operation of the Language Grid with the National Electronics ... Language Grids. Users in either Language Grid can use the language services in both Language Grids ... h22 110214 110214 e.html ref Researches Researches of developing and using the Language Grid are involved in several areas and communities. Academic papers related to Language Grid have been published ... more details
About a map system the computer network European Grid Infrastructure Multiple issues orphan July 2010 context April 2009 no footnotes April 2009 wikify December 2011 The European grid proposed as the multipurpose Pan European standard is based on the ETRS89 Lambert azimuthal equal area projection Lambert Azimuthal Equal Area coordinate reference system with the centre of the projection at the point 52o N, 10o E and false easting x0 4321000 m, false northing y0 3210000 m CRS identifier in Inspire ETRS89 LAEA . The grid is designated as Grid ETRS89 LAEA5210. For identification of an individual resolution level the name is extended by identification of cell size in metres example 100K . The origin of Grid ETRS89 LAEA5210 coincides with the false origin of the ETRS89 LAEA coordinate reference system x 0, y 0 . Grid points of grids based on ETRS89 LAEA must coincide with grid points at Grid ETRS89 LAEA5210. The grid is defined as hierarchical one in metric coordinates in power of 10. The resolution of the grid is 1m, 10m, 100m, 1000m, 10,000m, 100,000m. The grid orientation is south north, west east. Requirements Requirement 1 The grid proposed as the multipurpose Pan European standard is based on the ETRS89 Lambert Azimuthal Equal Area coordinate reference system with the centre of the projection at the point 52o N, 10o E and false easting x0 4321000 m, false northing y0 3210000 m. Requirement 2 Grid points of grids based on ETRS89 LAEA must coincide with grid points at Grid ETRS89 LAEA5210. Requirement 3 Reference point of grid cell for grids based on ETRS89 LAEA is the lower left corner of the grid cell. References Source INSPIRE Reference Systems Thematic Working Group INSPIRE Specifications Geographical grid systems Specifications on Geographical Grid Systems Draft Guidelines Reflist DEFAULTSORT European Grid Category Standards Category Europe science stub ... more details
Orphan date February 2009 Grid History Based Prediction Architecture Grid HPA is a tool for predicting the resource requirements of jobs in the Grid Computing environment based on a centralized History maintenance approach. Grid HPA has been implemented by Mahdi Bohlouli in the Iran University of Science and Technology IUST . The programming language used for implementing the tools is Java programming language Java . A SQL Server database management system has been used to store the history of executed jobs. The proposed algorithm of prediction can be used for every job in every environment, except of Grid computing. The measured accuracy of prediction in a centralized approach is better than a decentralized method, but both of these methods have advantages and disadvantages. ref Bohlouli M., Analoui M., Grid HPA Predicting Resource Requirements of a Job in The Grid Environments ,International Journal of Computer Science, Volume 3, Number 3, ISSN 2070 3856, Pages 137 141, Summer 2008 ref references Category Grid computing ... more details
Unreferenced date September 2009 About a graphical user interface element a grid computing system that deals with data data grid Image OOoCalc22.png thumb 250px Screenshot of OpenOffice.org Calc . Deleted image removed Image Xceed DataGrid for WPF Table Office2007 LARGE.png right thumb A datagrid with grouping and in place editing capabilities being showcased. This one is built with Windows Presentation Foundation . A grid view or a datagrid is a graphical user interface element widget computing widget that presents a tabular view of data. A typical grid view also supports some or all of the following Point and click Click ing a column header to change the sort order of the grid Drag and drop Drag ging column headers to change their size and their order In place editing of viewed data Row and column separators, and alternating row background colors An interactive live demo example of this type of list can be seen here http www.mycustomcontrols.com custom controls Products GridViewEx Demo Default.aspx . Some widget toolkit s distinguish between a grid and a datagrid. If this is the case, the term datagrid refers specifically to a widget that can be linked to a database with little or no effort from the part of a programmer . They are commonly used to display lists of files, such as the Details view in Windows XP file managers. Grid views are sometimes referred to as spreadsheet widgets or spreadsheet controls , with control being a common synonym for widget . This is due to grid views visual and sometimes behavioral similarity to spreadsheet applications. However, though many grid views support editing of underlying data, they can t be used for arbitrary calculations. Spreadsheet ... articles 0000316 Interactive Grid with Your Own Hands Dead link date July 2011 an article by Dmitry Sheiko http video.google.com videoplay?docid 8659834552473607387&hl en Practice of grid ... Move Over DataGrid There s a New Grid in Town GUI widgets Category Graphical user interfaces Category ... more details
Unreferenced date December 2009 File Fictional Map 1.jpg right thumb 400px A typical map displaying grid reference Grid references define locations on maps using Cartesian coordinates . Grid lines on maps define the coordinate system , and are numbered to provide a unique reference to features. Grid systems vary, but the most common is a square grid with grid lines numbered sequentially from the origin at the bottom left of the map. The grid numbers on the east west horizontal axis are called Eastings, and the grid numbers on the north south vertical axis are called Northings. Numerical grid references ... grid reference 123456, the Easting component is 123 and the Northing component is 456. Grids may ... maps use a one kilometre square grid spacing. A grid reference locates a unique point on the map. The precision of location varies, for example a simple town plan may use a simple grid system with single letters for Eastings and single numbers for Northings. A grid reference in this system, such as H3 , locates a particular square rather than a single point. Points can be located by grid references ... Grid used by the Ordnance Survey , and located by someone else using grid references, even if using maps of a different scale. For Ordnance Survey maps, each Easting and Northing grid line is given a two digit code, based on the British national grid reference system with origin point just off the southwest ... of a Northing and an Easting will give a four digit grid reference describing a one kilometre ... boxed symbols are in square 6901. The more digits added to a grid reference, the more precise the reference ... within the 1 kilometre square. Imagine or draw or superimpose a Romer a further 10x10 grid within the current grid square. Any of the 100 squares in the superimposed 10 x 10 grid can be accurately ... Eastings and 7 on the bottom to top axis Northings . These are added to the four figure grid reference after the two digits describing the same coordinate axis , and thus our six figure grid reference ... more details
The control grid is an electrode used in vacuum tube thermionic valves vacuum tubes used to modulate the flow of electrons in the cathode to anode or plate electrode plate circuit. Operation A relatively small variation in voltage on the control grid causes a significantly large variation in anode current. The presence of a resistor in the anode circuit causes a large variation in voltage to appear at the anode. Thus the device will function as an amplifier . The addition of just a single control grid to a diode valve produces a triode . Construction The grid in the first triode valve consisted of a zig zag piece of wire placed between the filament and the anode. This quickly evolved into a helical grid placed between a single strand filament or later, a cylindrical cathode and a cylindrical anode. The grid is usually made of a very thin wire that can resist high temperatures and is not prone ... on soft copper sideposts, which are swaged over the grid windings to hold them in place. A 1950s variation is the frame grid, which winds very fine wire onto a rigid stamped metal frame. This allows the holding of very close tolerances, so the grid can be placed closer to the filament or cathode . Effects of grid position By placing the control grid closer to the filament cathode relative to the anode ... of the anode current change versus grid voltage change. The noise figure of a valve is inversely ... grids A valve can contain more than one control grid. The hexode contains two such grids, one for a received ... of those signals. This can be exploited as a frequency changer in superheterodyne receivers. Grid variations A variation of the control grid is to produce the helix with a variable pitch. This gives ... where an alteration of the grid bias changes the mutual conductance and hence the gain of the device ... between the grid and the anode. A phenomenon known as the Miller Effect ... grid , however in the later years of the tube era, constructional techniques were developed that rendered ... more details
Image Unstructured grid.svg thumb right Example of unstructured grid for a finite element analysis mesh. An unstructured or irregular grid is a tessellation of a part of the Euclidean plane or Euclidean space by simple shapes, such as triangle s or tetrahedron tetrahedra , in an irregular pattern. Grids of this type may be used in finite element analysis when the input to be analyzed has an irregular shape. Unlike structured grid s, unstructured grids require a list of the connectivity graph theory connectivity which specifies the way a given set of vertices make up individual elements see graph data structure . Ruppert s algorithm is often used to convert an irregularly shaped polygon into an unstructured grid of triangles. In addition to triangles and tetrahedra, other commonly used elements in finite element simulation include quadrilateral 4 noded and hexahedral 8 noded elements in 2D and 3D, respectively. One of the most commonly used algorithms to generate unstructured quadrilateral grid is Paving Citation needed date February 2010 . However, there is no such commonly used algorithm for generating unstructured hexahedral grid on a general 3D solid model. Plastering is a 3D version of Paving, Citation needed date February 2010 , but it has difficulty in forming hexahedral elements at the interior of a solid. See also Regular grid Finite element analysis External links https visualization.hpc.mil wiki Types of Grids Unstructured Grid Category Mesh generation ru zh fr Maillage ... more details
expert subject date March 2011 A grid network is a kind of computer network consisting of a number of computer systems connected in a grid topology. In a regular grid topology, each node in the network is connected with two neighbors along one or more dimension s. If the network is one dimensional, and the chain of nodes is connected to form a circular loop, the resulting topology is known as a ring. Network systems such as Fiber distributed data interface FDDI use two counter rotating token passing rings to achieve high reliability and performance. In general, when an n dimensional grid network is connected circularly in more than one dimension, the resulting network topology is a torus , and the network is called toroidal . When the number of nodes along each dimension of a toroidal network is 2, the resulting network is called a hypercube . A parallel computing cluster or multi core processor is often connected in regular interconnection network such as a de Bruijn graph , ref http www.era.lib.ed.ac.uk bitstream 1842 860 1 Spadavecchia thesis.pdf A Network based Asynchronous Architecture for Cryptographic Devices by Ljiljana Spadavecchia 2005. section 5.6.1.2 De Bruijn graphs , and section 5.6.2.2 Randomised routing in de Bruijn graphs . ref a hypercube graph , a hypertree network , a fat tree network, a torus , or cube connected cycles . Note that a grid network is not the same as a grid computer or computational grid even though the nodes in a grid network are usually computers, and grid computing obviously requires some kind of computer network to interconnect the computers . See also Grid plan street network Network topology References reflist DEFAULTSORT Grid Network Category Network topology Compu network stub ru ... more details
Unreferenced date April 2011 The Amsler grid , used since 1945, is a grid of horizontal and vertical lines used to monitor a person s central visual field . The grid was developed by Marc Amsler , a Swiss ophthalmologist . It is a diagnostic tool that aids in the detection of visual disturbances caused by changes in the retina , particularly the macula of retina macula e.g. macular degeneration , Epiretinal membrane , as well as the optic nerve and the visual pathway to the brain. Image Normalamslergrid.gif frame right An Amsler grid, as seen by a person with normal vision. Image Amslergrid patientAMD.gif frame right An Amsler grid, artist s conception, as it might be viewed by a person with Macular degeneration age related macular degeneration . In the test, the person looks with each human eye eye separately at the small dot in the center of the grid. Patients with macular disease may see wavy lines or some lines may be missing. Amsler grids are supplied by ophthalmologist s, optometrist s or from web sites, and may be used to test one s vision at home. The original Amsler grid was black and white. A color version with a blue and yellow grid is more sensitive and can be used to test for a wide variety of visual pathway abnormalities, including those associated with the retina, the optic nerve , and the pituitary gland . See also Scotoma Epiretinal membrane Macular degeneration Preferential hyperacuity perimetry External links http www.eyesight.org Macular Degeneration Eye Test eye test.html Blind Spot Amsler Grid Test from Snellen eye chart http www.mdsupport.org eyetests.html Self administered online eye tests Amsler grid, visual field mapping and blind spot test. DEFAULTSORT Amsler Grid Category Ophthalmology de Amsler Gitter es Grilla de Amsler fr Grille d Amsler hr Amslerova mre a pl Test Amslera pt Tela de Amsler sr sh Amslerova mre a zh ... more details
Unreferenced stub auto yes date December 2009 A tension grid is a type of non standard Catwalk theater catwalk though it does not meet the structural standards of a traditional catwalk. It is composed of a tightly stretched grid of steel cables that create a taut floor that is strong enough for technicians to walk on. Benefits Lighting instruments can be hung on a pipe grid just above the tension grid there is no need for holes, as the Stage lighting instrument light can shine through the grid, virtually unobstructed, to the stage. Cables and electrical wires can pass through, and special fixtures may be used to allow beams and other solid material to pass through. This style of catwalk is popular in new and remodeled theatres due to the flexibility it provides. Use of a tension grid does not require working off of edges as a traditional catwalk does, as lights are over the walking surface, not next to it. As a result, many consider tension grids safer in terms of risk of falling. Costs Tension grids require regular inspection. Lights shining through the tension grid light up a section of the grid itself, which some audience members find distracting. The cables of the grid absorb and redirect some of the light from a fixture, leading to a negligible loss in total light output. Working on a tension grid takes time to get used to because of the bouncing nature from walking across the surface. This motion coupled with the illusion of no floor at times makes it disconcerting to some. DEFAULTSORT Tension Grid Category Stage lighting Category Stage terminology Category Fly system Stagecraft stub ... more details
Image Grid chess sample position.png right frame A sample position. Grid chess is a chess variant invented by Walter Stead in 1953. It is played on a grid board . This is a normal 64 square board with a grid of lines further dividing the board into larger squares. For a move to be legal in grid chess, the piece moved must cross at least one of these lines. Grid chess is also used in chess problems . Rules Various arrangements of the grid have been tried, but the original, and by far the most popular, is that shown to the right, which divides the board into 16 2 2 squares. Unless otherwise stipulated, the term grid board can be assumed to refer to this arrangement, and grid chess to chess played on this board. In the position shown, white can play either a3 or a4 see Algebraic chess notation algebraic notation , but cannot move his b pawn. Black cannot play Bd5 but can play any other bishop move &mdash if he wants to put his bishop on d5, it will take two moves for example, first Ba8, and then Bd5 . The white king is not in check from the queen, but if the queen were to take a step back with Qe3, it would be. The white king cannot take the queen, although the white knight can. The black ... in normal chess, with Ke7 or Kf7, as these moves do not cross a grid line, but he can play Kd7 and also Kd8, bringing the king into the same large square as the rook. Example problem Image Ternblad grid chess problem.png right frame Helpmate in 4. It is possible to play entire games under grid chess conditions, and a number of chess problem s using grid chess rules have also been composed. The one to the right won first prize in the first grid chess problem tournament. It is by H. Ternblad and was published ... over a grid line gives check again 3.Ke4 Bc6 4.Kd5 note that two kings can co exist next to each ... because two of the moves do not cross grid lines, and d1 e2 e3 d4 d5 is not possible because on d4 ... Grid Chess Problems Category Chess variants Category Chess problems Category Fairy chess Category ... more details
Companies date September 2011 The D Grid Initiative German Grid Initiative was a government ... grid computing . D Grid started September 1, 2005 with six community projects and an integration project DGI as well as several partner projects. Integration project The D Grid integration project intended to integrate community projects. The D Grid integration project acted as a service provider ... Computing IWR at Forschungszentrum Karlsruhe. The resources to ensure a sustainable Grid infrastructure are provided by four work packages D Grid Base Software The major task of this work package ..., GridSphere and the Grid Application Toolkit GAT . The community projects linked together in the D Grid integration project are supported during the installation, operation and if needed and possible the customisation of the Base Software. Deployment and operation of the D Grid infrastructure Work package 2 builds up a Core D Grid. It was used as a prototype to test the operational functionality ... The network infrastructure in D Grid is based on the DFN Wissenschaftsnetz X WiN. Work package 3 will provide extensions to the existing network infrastructure according to the needs of Grid middleware used in D Grid. Further tasks are to build an AA Infrastructure in D Grid, develop firewall concepts for Grid environments and set up Grid specific CERT services. D Grid project office The work package is responsible for the integration of community projects into one common D Grid platform ... in the D Grid Initiative AstroGrid D AstroGrid D, also referred to as the German Astronomy Community Grid GACG , is a joint research project of thirteen Astronomy astronomical institutes and grid oriented ... Observatory Alliance IVOA and cooperates closely with international projects on grid development. AstroGrid D is managed by the Astrophysical Institute Potsdam AIP . C3 Grid At the Collaborative Climate Community Data and Processing Grid C3 Grid scientific researchers are trying to understand ... more details
Image HermannGrid.gif thumb An example of the Hermann grid illusion. Dark blobs appear at the intersections A grid illusion is any kind of Grid spatial index grid that deceives a person s vision. The two most common types of grid illusions are the Hermann grid illusion and the scintillating grid illusion . Hermann grid illusion The Hermann grid illusion is an optical illusion reported by Ludimar Hermann ... of a white or light colored grid on a black background. The grey blobs disappear when looking directly at an intersection. Scintillating grid illusion Image Grid illusion.svg thumb An example of the scintillating grid illusion. Dark dots seem to appear and disappear at intersections The scintillating grid illusion is an optical illusion , discovered by E. Lingelbach in 1994, that is usually considered a variation of the Hermann grid illusion see section below . It is constructed by superimposing ... and Hermann grid illusions The difference between the Hermann grid illusion and the scintillating illusion ... already in place at the intersections of Hermann grid illusions. Since they are so similar ... with an isolated intersection, as in the case of the Hermann grid observations suggest that a minimum .... For example, making the lines of the grid wavy rather than straight eliminates both the Hermann grid and Scintillating grid illusions. ref name Geier cite journal doi 10.1068 p5622 author ... grid illusion journal Perception volume 37 issue 5 pages 651 665 pmid 18605141 ref ref cite web url http www.geier.hu Hermann index.html title Stopping the Hermann grid illusion by sine distortion first ... Schiller cite journal title The Hermann grid illusion revisited. authors Schiller PH, Carvey CE ... explanation of Hermann Grid Illusion http mathworld.wolfram.com ScintillatingGridIllusion.html Scintillating Grid Illusion Mathworld http www.josef.org scintillating.html Giant grid http www.psy.ritsumei.ac.jp akitaoka saccadecolor.gif Large Hermann Grid Illusion Category Optical illusions es Ilusi n ... more details
Grid north is a navigation al term referring to the direction northwards along the grid lines of a map projection . It is contrasted with true north the direction of the North Pole and magnetic north the direction of the Magnetic North Pole . Many topographic map s, including those of the United States Geological Survey and the Ordnance Survey , indicate the difference between grid north, true north, and magnetic north. At the South Pole , grid north conventionally points northwards along the Prime Meridian . ref http quest.nasa.gov antarctica background cara movpole.html Moving the South Pole , NASA Quest ref References references Category Navigation Category Orientation Category Cartography geo term stub de Gitternord fi Karttapohjoinen zh ... more details
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