Refimprove date September 2009 Image Angle of incidence.svg thumb Angle of incidenceAngle of incidence ... optics , the angle of incidence is the angle between a ray incident on a surface and the line perpendicular to the surface at the point of incidence, called the surface normal normal . The ray can ... to the angle between the beam and the surface, rather than that between the beam and the surface normal , in other words 90 minus the angle of incidence. This angle is called a glancing angle or grazing angle . Incidence at small grazing angle is called grazing incidence . Grazing incidence diffraction ... from a Sphere journal SIAM Review volume 35 pages 472 480 doi 10.1137 1035091 ref Angle of incidence of fixed wing aircraft Image Aircraft Angle of Incidence improved 1080x660 25Mar2009.jpg thumb right 360px Angle of incidence of an airplane wing on an airplane. On fixed wing aircraft , angle of incidence ... and the longitudinal axis of the fuselage. The angle of incidence is fixed in the design ... of the aircraft blue line . Wings are typically mounted at a small positive angle of incidence, to allow ... 6 are common on most general aviation designs. Other terms for angle of incidence in this context are rigging angle and rigger s angle of incidence . It should not be confused with the angle of attack ... may use either term when referring to angle of attack. The use of the term angle of incidence ... Notes reflist External links mathworld urlname AngleofIncidence title Angle of incidence http ... Angle Of Incidence Category Geometrical optics Category Aviation terminology Category Aerodynamics ... ray to a surface, or the angle at which the wing or Stabilizer aircraft horizontal tail of an airplane ... above, the red line representing a ray makes an angle with the normal dotted line . The angle of incidence at which light is first totally internally reflected is known as the critical angle . The angle of reflection and angle of refraction are other angles related to beams. Grazing angle ... more details
Grazing incidence small angle scattering GISAS is a scattering technique used to study nanostructured surfaces and thin films. The scattered probe is either photons Grazing incidence small angle X ray scattering , GISAXS or neutrons Grazing incidence small angle neutron scattering , GISANS . GISAS combines the accessible length scales of Small angle scattering SAS SAXS or SANS and the surface sensitivity of grazing incidence diffraction GID . Image GISAXS.png 300px thumb right Geometry of a GISAS experiment. The incident beam strikes the sample under a small angle close to the critical angle of total ... with Small Angle X ray Scattering under Grazing Incidence GISAXS , Synchrotron Radiation News, Issue .... Chung and P. Georgopoulos Grazing incidence small angle X ray scattering new tool for studying thin .... Rauscher, T. Salditt, and H. Spohn Small angle X ray scattering under grazing incidence the cross ... IsGISAXS a program for grazing incidence small angle X ray scattering analysis of supported islands ... Films with Grazing Incidence Small Angle X ray Scattering , Macromolecules 38, 4311 4323 2005 . ref ref name busch P. Busch, M. Rauscher, D. M. Smilgies, D. Posselt, and C. M. Papadakis Grazing incidence small angle x ray scattering GISAXS as a tool for the investigation of thin nanostructured block ... interface are all accessible. By varying the incidenceangle the various contributions can be identified ... Grazing Incidence Small Angle X Ray Scattering Category X rays Category Scattering Category ... in quantum dot systems studied by grazing incidence X ray scattering methods , Thin Solid Films ... Aspects of Small Angle Scattering , Kluwer Academic Publishers, Amsterdam, 1995 , p. 191. ref and coworkers ... reflectivity such as the Yoneda Vinyard peak at the critical angle of the sample, and the scattering ... materials on silicon wafers, when the incident angle is in between the critical angles of the film ... used, typically on small angle SANS instruments or on neutron reflectometer reflectometers ... more details
wiktionary incidenceIncidence may refer to Incidence epidemiology , a measure of the risk of developing some new condition within a specified period of time Incidence geometry , the binary relations describing how subsets meet Angle of incidence , a measure of deviation of something from straight on Incidence algebra , associative algebra used in combinatorics, a branch of mathematics Incidence structure , a feature of combinatorial mathematics See also Incident disambiguation disambig de Inzidenz es Incidencia desambiguaci n fr Incidence ... more details
Infobox musical artist See Wikipedia WikiProject Musicians name An Angle image caption Kris Anaya of An Angle image size background group or band alias origin Sacramento, California genre Indie rock years active 2000&ndash 2008 label Drive Thru Records br UnderAcloud Records associated acts website current members Kris Anaya br Matt Sergent br Dan Block br Nick Swimley br James Neil past members notable instruments An Angle was an indie rock band from Sacramento, California . At the center of this group was singer songwriter Kris Anaya. The band was signed to Drive Thru Records . On Monday, July 20, 2008, Matt Sergent announced via the group s Myspace page that the members of An Angle had decided to go their separate ways. Members Kris Anaya Singing vocals , guitar Matt Sergent vocals, bass guitar bass Nick Swimley vocals, guitar James Neil vocals, Drum kit drums Dan Block vocals, keyboard instrument keyboards , trombone Past contributors Aram Deradoorian, Trevor Church, Morley Boyer, Joey Hyland, Melody Mundy, Jessica Brown, Angel Deradoorian , Ryan Rake, Tim McCord , Matt McCord, Chris Trombley, Robert Cheek, Lance Jackman, Anthony Sarte, Alvir Navin , Mark Meraji, Zack Thompson, Cory Prodigy, Mike Woodall, Nate Perkins, Nyssa Capps, Shaun Bivins, Steve Taylor musician Steve Taylor , Dan Callahan, Gram Gerry, Toby Muench, Mike Sparks, Bob McCauley, Matt Millner, Ira Skinner, Ryan Rietz, Arjun Singh, Tony Portela, Marty Stangel, Richard St.Ofle, Chelsea Wolfe , Caitlin Gutenberger, Dusty Brown, Dave Dahlquist, Alex Huie, Ben Reeves, Ben Edrington, James Leste, Sam Coe, Terra ... links http www.myspace.com ananglemusic An Angle s profile at MySpace http www.purevolume.com anangle An Angle s profile at PureVolume http www.drivethrurecords.com Drive Thru Records website http mitm.wordpress.com 2007 05 24 interview kris from an angle Interview with Kris for More Important Than Music http www.underacloud.net Under a Cloud Records website An Angle DEFAULTSORT Angle, An Category ... more details
About the Gettysburg battlefield other uses Angle disambiguation other military engagements with similar names Bloody Angle disambiguation Geobox landmark other name Bloody Angle category Historic district United States historic district contributing property ref name hscl eponym west angle of 90 of two angles where the ends of two offset north south rock walls are connected by an 80 ft east west wall sub &lceil sup &rfloor sup image TheAngle2.jpg image size 265 image caption In addition to an 1896 cast iron ID marker and a plaque depicted General Armistead http www.hmdb.org marker.asp?marker 16107 and a few Confederate soldiers charged across this wall, reached the Union cannon behind it and were ... free type free free note free1 type free1 free1 note website The Angle ref name hscl Citation last Cope first Emmor Bvt Lt Col authorlink Emmor Cope year 1896 preserved 1999 title The Angle Cast Iron ... Angle Colloquialism colloq. is a Gettysburg Battlefield area which includes the 1863 Copse of Trees ... PEJjAAAAIBAJ&sjid KHQNAAAAIBAJ&pg 5081,463751&dq bloody angle gettysburg&hl en format Google News Archive ... took place at the bloody angle where 1,500 Virginians broke through the lines held by their hosts ... The Angle in their reenactment of Pickett s Charge. ref Cite news date July 1, 1922 title Traffic ... accessdate 2011 01 26 ref The proper noun Bloody Angle became common during the Gettysburg Battlefield ... in an 1894 tent at The Angle , and during reunions in 1887, ref name Canaseraga 1913 Gettysburg ... hands over the rock wall at The Angle. The nearby field along the Emmitsburg Road was also the site ..., and a World War II Prisoner of War Camp, Gettysburg Battlefield, Pennsylvania WWII POW stockade . The Angle ... Gettysburg Electric Railway was along the west wall of The Angle ref name NYT1893 Cite news ... One photograph which appeared to day showed the ground in front of the Bloody Angle . The route of the railroad ..., the Gettysburg National Military Park did not acquire the trolley land at The Angle until congressional ... more details
Ceva s theorem Concyclic Incidence matrix Incidence algebra Angle of incidenceIncidence structure Incidence geometry Levi graph Hilbert s axioms Incidence descriptive geometry Category Projective geometry ...Unreferenced date December 2007 In geometry , the Relation mathematics relations of incidence are those such as lies on between points and lines as in point P lies on line L , and intersects as in line L sub 1 sub intersects line L sub 2 sub , in three dimension al space . That is, they are the binary relation s describing how subset s meet. The propositions of incidence stated in terms of them are statements such as any two lines in a plane meet . This is true in a projective plane , though not true in Euclidean space of two dimensions where lines may be Parallel geometry parallel . Historically, projective geometry was introduced in order to make the propositions of incidence true without exceptions such as are caused by parallels . From the point of view of synthetic geometry it was considered that projective geometry should be developed using such propositions as axiom s. This turns out to make a major difference only for the projective plane for reasons to do with Desargues theorem . The modern approach is to define projective space starting from linear algebra and homogeneous co ordinates . Then the propositions of incidence are derived from the following basic result on vector space s given subspaces U and V of a vector space W , the dimension of their intersection is at least ... proposition of incidence in this form linear subspace s L and M of projective space P meet provided ... 1 sub and P sub 2 sub is L sub 3 sub where math L 3 g 1 P 1 times P 2 . math Checking for incidence ... way of checking for this same incidence is to see whether math L cdot g 1 P 0 math is true. Concurrence ... are concurrent if and only if math L 1 cap L 2 subset L 3. math According to the Incidence geometry Checking for incidence of a line on a point previous section , the intersection of the first two ... more details
For tax incidence tax incidence In economics , benefit incidence refers to the availability of a benefit. ref name uslabor cite web url http www.bls.gov bls glossary.htm title BLS Information date February 28, 2008 work Glossary publisher U.S. Bureau of Labor Statistics Division of Information Services accessdate 2009 05 05 ref In the United States , the benefit incidence is calculated by the National Compensation Survey NCS . See also Benefits National Compensation Survey Fiscal incidence Benefit incidence analysis Perhaps can be put in this article Bureau of Labor Statistics References Reflist External links http www.bls.gov bls glossary.htm Benefit incidence , U.S. Bureau of Labor Statistics Division of Information Services http www.bls.gov ncs ebs home.htm Employee Benefits Survey , U.S. Bureau of Labor Statistics Division of Information Services Category Economics terminology Category Labor terms econ stub ... more details
Incidence geometry is an area of mathematics that studies relations of incidence geometry incidence between various geometrical objects such as points, lines, curves, and planes. A specific collection of such objects is called a mathematical structure . One type of mathematical structure of particular importance contains only points and lines and is called an incidence geometry . Definition An incidence geometry is an incidence structure for which the following axioms are true Every pair of distinct ..., there is at least one point that does not lie on the line. The result of this is that every incidence geometry contains at least three points and three lines. Thus, the simplest incidence geometry ... incidence geometry was developed by the Italian mathematician Fano and is known as the Fano plane File Fano Plane.jpg center Incidence Matrix An incidence geometry can be modeled by an incidence matrix which serves as a visual representation of all incidence relations in the geometry. The rows of the matrix represent points, while the columns represent lines. The incidence matrix for the Fano plane looks like this File Fano Incidence.jpg center The incidence matrix shows the sets of points ... the entire geometry, which is one reason why the study of incidence geometry is important ... be derived from the incidence matrix. If N is the incidence matrix and N sup T sup is the transpose of the incidence matrix, then the line line matrix L N sup T sup N . Point Point Matrix The point ... the incidence matrix. If N is the incidence matrix and N sup T sup is the transpose of the incidence ... theorem incidence geometry de Bruijn Erd s theorem is an important theorem in the field of incidence ... lines. More Examples Affine plane incidence geometry Affine planes Projective geometry Projective ..., Francis 1995 , Handbook of Incidence Geometry Buildings and Foundations , Elsevier B.V. http ... ErdosTheorem.html de Bruijn Erd s Theorem from http mathworld.wolfram.com MathWorld Category Incidence ... more details
In mathematics , an incidence structure is a triple math C P,L,I . , math where P is a set of points , L is a set of lines and math I subseteq P times L math is the incidence relation. The elements of I are called flags. If math p,l in I, math we say that point p lies on line math l math . One may concretely have L be a set of subsets of P, and have incidence I be containment math p,l in I math if and only if math p in l math , but one may also work more abstractly. Incidence structures generalize planes such as affine plane incidence geometry affine , projective , and M bius plane s in their axiomatic definitions, as the terminology indicates. The higher dimensional analog is called an incidence ... an edge has just two ends beyond a vertex a new edge starts , while a line in an incidence structure can be incident to more points. An incidence structure has no concept of a point being ... Each hypergraph or set system can be regarded as an incidence structure in which the universal set plays the role of points , the corresponding family of sets plays the role of lines and the incidence relation is Element mathematics set membership . Conversely, every incidence structure can be viewed ... , 3,4,7 , 3,5,6 . The corresponding incidence structure is called the Fano plane ... up to zero using nim addition . Geometric representation Incidence structures can be modelled by points and curves in the Euclidean plane with usual geometric incidence. Some incidence structures admit ... curve. Levi graph of an incidence structure Image Fano plane Levi graph.svg thumb Heawood graph with labeling Each incidence structure C corresponds to a bipartite Graph mathematics graph called Levi graph or incidence graph with a given black and white graph coloring vertex coloring where black vertices ... relation Incidence matrix Incidence geometry Projective configuration Pappus configuration Hypergraph ... Incidence geometry ... more details
Refimprove date November 2007 Incidence is a measure of the risk of developing some new condition within ... incidence ref with a denominator data denominator . Incidence proportion also known as cumulative incidence is the number of new cases within a specified time period divided by the size of the population ... and 28 develop a condition over two years of observation, the incidence proportion is 28 cases per 1,000 persons, i.e. 2.8 . Incidence rate The incidence rate is the number of new cases per population in a given time period. ref DorlandsDict seven 000090534 incidence rate ref When the denominator is the sum of the person time of the at risk population, it is also known as the incidence density rate or person time incidence rate . ref cite book title A Dictionary of Epidemiology editor first ... ISBN 0 19 514169 5 ref In the same example as above, the incidence rate is 14 cases per 1000 person years, because the incidence proportion 28 per 1,000 is divided by the number of years two . Using ... that the incidence rate is constant over different periods of time, such that for an incidence rate ... survival after diagnosis of metastatic cancer, it may be more useful to present incidence data in a plot of cumulative incidence over time, taking into account loss to follow up, using a Kaplan Meier ... to determine the incidence rate of developing HIV over a 10 year period. At the beginning of the study ... HIV is in your sample population, but little about the actual risk of developing HIV. To measure incidence ... more accurate measure of risk than prevalence. Incidence vs. prevalence Incidence should not be confused ... than the rate of occurrence of new cases. Thus, incidence conveys information about the risk of contracting ... see denominator data . Incidence is usually more useful than prevalence in understanding the disease etiology for example, if the incidence rate population of a disease increases, then there is a risk factor that promotes the incidence. For example, consider a disease that takes a long time ... more details
context date August 2009 In optical reflection, the plane of incidence is the plane spanned by the surface normal and the propagation vector of the incoming radiation. In physical optics wave optics , the latter is the Wave vector k vector of the incoming wave. Optical polarization directions in presence of reflection take following names p polarised waves are linearly polarised waves parallel to the plane of incidence, and s polarised waves are linearly polarised waves perpendicular to the plane of incidence. The names come from German parallel and senkrecht . Category Optics de Einfallsebene sl Vpadna ravnina ... more details
Cumulative incidence or incidence proportion is a measure of frequency, as in epidemiology , where it is a measure of disease frequency during a period of time. Where the period of time considered is an entire lifetime, the incidence proportion is called lifetime risk . ref cite journal journal J Epidemiol Community Health date 2004 Jul volume 58 issue 7 pages 538 45 title A glossary for evidence based public health author Rychetnik L, Hawe P, Waters E, Barratt A, Frommer M pmid 15194712 pmc 1732833 doi 10.1136 jech.2003.011585 ref Cumulative incidence is defined as the probability that a particular event, such as occurrence of a particular disease, has occurred before a given time. ref Dodge, Y. 2003 The Oxford Dictionary of Statistical Terms , OUP. ISBN 0 19 920813 9 ref It is equivalent to the incidence, calculated using a period of time during which all of the individuals in the population are considered to be at risk for the outcome. It is sometimes also referred to as the incidence proportion. Cumulative incidence is calculated by the number of new cases during a period divided by the number of subjects at risk in the population at the beginning of the study. It may also be calculated by the incidence rate multiplied by duration math CI t 1 e IR t D , . math More footnotes date January 2010 References references Medical research studies DEFAULTSORT Cumulative Incidence Category Epidemiology es Incidencia Incidencia acumulada lt Kumuliacinis sergamumas zh ... more details
In mathematics , an incidence matrix is a matrix mathematics matrix that shows the relationship between .... Graph theory Incidence matrices are mostly used in graph theory . Undirected and directed graphs ... G has two kinds of incidence matrices unoriented and oriented. The incidence matrix or unoriented incidence matrix of G is a p × q matrix math matrix math b ij math , where p and q are the numbers ... the incidence matrix of the undirected graph shown on the right is a matrix consisting of 4 rows corresponding ... pmatrix 1 & 1 & 1 & 0 1 & 0 & 0 & 0 0 & 1 & 0 & 1 0 & 0 & 1 & 1 end pmatrix math The incidence matrix ... the opposite sign convention. An oriented incidence matrix of an undirected graph G is the incidence ... vertex of e , and all other rows have 0. All oriented incidence matrices of G differ only ... of the oriented incidence matrix, even though that is technically incorrect. The oriented or unoriented incidence matrix of a graph G is related to the adjacency matrix of its line graph L G by the following ... graph of G , B G is the incidence matrix, and math I q math is the identity matrix of dimension q. The Kirchhoff matrix is obtained from the oriented incidence matrix M G by the formula math M G M G T . math The integral cycle space of a graph is equal to the null space of its oriented incidence ... cycle space is the null space of its oriented or unoriented incidence matrix, viewed as a matrix over the two element field mathematics field . Signed and bidirected graphs The incidence matrix of a signed graph is a generalization of the oriented incidence matrix. It is the incidence matrix of any ... of incidence matrix apply to graphs with loop graph theory loops and multiple edges . The column of an oriented incidence matrix that corresponds to a loop is all zero, unless the graph is signed ... , the column of an incidence matrix for graphs can only have two non zero entries. By contrast, a hypergraph .... Incidence structures The incidence matrix of an incidence structure C is a p × q matrix math ... more details
Orphan date May 2011 Expenditure incidence is the effect of government expenditure upon the distribution of private incomes. This is commonly contrasted with benefit incidence as an approach to planning and measuring the effect of a government spending programme. A pioneering analysis of this was made by the economist Richard Musgrave in his major work, The Theory of Public Finance . ref citation title Economy planning and policies author K.N.Reddy chapter Incidence of Public Expenditure in Andhra Pradhesh isbn 9788170223207 year 1990 pages 51 74 ref Establishing the differential effect of expenditure in this way is difficult because the effect of differing policies upon taxation and overall expenditure must be normalised and it is hard to model and measure the flows of money which result. ref citation title Public Finance author David N. Hyman chapter Taxation, Prices, Efficiency, and the Distribution of Income year 2010 isbn 9780538754460 pages 445 488 ref An analysis will commonly be structured in three stages ref citation title Public expenditure analysis chapter Public Expenditure Incidence Analysis author Giuseppe Ruggeri isbn 9780821361443 year 2005 pages 1 32 ref Definition of the government programmes or budgetary expenditures and the corresponding database of monetary values. Determining the measures of income the size of economic unit such as the individual, family or community the timescale of analysis such as annual or lifetime the well being and externalities which arise from the expenditure. The resulting effects upon income distribution as a result of the expenditure are then calculated. These will typically be presented graphically as a Lorenz curve or in the form of an index such as the Gini coefficient . References reflist Further reading citation title The Theory of Expenditure Incidence author Charles E. McClure year 1972 journal Finanzarchiv volume 30 pages 432 453 DEFAULTSORT Expenditure Incidence Category Economics Category Development economics ... more details
In order theory , a field of mathematics , an incidence algebra is an associative algebra , defined for any locally finite partially ordered set and commutative ring with unity. Definition A locally finite ... set finite . The members of the incidence algebra are the function mathematics function s f assigning ... addition and scalar multiplication pointwise, and multiplication in the incidence algebra is a convolution defined by math f g a, b sum a leq x leq b f a, x g x, b . math An incidence algebra is finite dimensional if and only if the underlying poset is finite. Related concepts An incidence algebra is analogous to a group ring group algebra indeed, both the group algebra and the incidence algebra are special ... identity element of the incidence algebra is the delta function , defined by math delta ... of an incidence algebra is the constant function a, b 1 for every interval a, b . Multiplying by is analogous to integration. One can show that is invertible in the incidence algebra with respect to the convolution defined above . Generally, a member h of the incidence algebra is invertible ... function in this incidence algebra similarly corresponds to the formal power series 1. Subgroups of a finite ... is related to the classical Euler characteristic . Reduced incidence algebras Any member of an incidence ... as posets is a member of the reduced incidence algebra . This is a subalgebra of the incidence algebra, and it clearly contains the incidence algebra s identity element and zeta function. Any element of the reduced incidence algebra that is invertible in the larger incidence algebra has its inverse in the reduced incidence algebra. As a consequence, the M bius function is always a member of the reduced incidence algebra. Reduced incidence algebras shed light on the theory of generating function ... Path algebra Literature Incidence algebras of locally finite posets were treated in a number of papers ... DEFAULTSORT Incidence Algebra Category Algebraic combinatorics Category Order theory de Inzidenzalgebra ... more details
Taxation In economics , tax incidence is the analysis of the effect of a particular tax on the distribution of Welfare economics economic welfare . Tax incidence is said to fall upon the group that, at the end of the day, bears the burden of the tax. The key concept is that the tax incidence or tax burden ... and in particular Francois Quesnay Fran ois Quesnay who argued that the incidence of all taxation ..., however, the incidence of the tax falls elsewhere. For example, a tax on apple farmers might actually be paid by owners of agricultural land but the incidence may initially fall on consumers of apples. Initially, the incidence of all labour related taxes such as income tax and NI contributions falls ..., they reduce the amount of rent that the business can pay and thus the incidence falls on the landowner .... The theory of tax incidence has a number of practical results. For example, United States Social ... because the employer passes the tax on in the form of lower wages. The tax incidence is thus said ... Income Tax Bot generated title ref Example of tax incidence Imagine a 1 tax on every barrel of apples ... bear the entire burden of the tax the tax incidence falls on consumers. On the other hand, if the apple ... decreased revenues the tax incidence falls on the farmer. If the apple farmer can raise prices by an amount less than 1, then consumers and the farmer are sharing the tax burden. When the tax incidence ... , including agricultural land and employee wages. Where the tax incidence falls depends in the short run on the price elasticity of demand and price elasticity of supply . Tax incidence falls ... equally between buyer and seller. Tax incidence can be calculated using the pass through fraction ... of a tax, see Tax . Inelastic supply, elastic demand Image Tax incidence producer .svg thumb 300px ... much. The producer is unable to pass the tax onto the consumer and the tax incidence falls on the producer .... This is known as back shifting . Inelastic demand, elastic supply Image Tax incidence consumer .svg ... more details
Fiscal incidence is a concept within public finance , a sub discipline within economics , that refers to the combined overall economic impact of both government taxation and expenditure s on the real economic income of individuals. While taxation reduces the economic well being of individuals, government expenditures raise their economic well being. Fiscal incidence is the term for the overall impact of government taxing and spending considered together. Theory In theory, governments withdraw resources ... incidence of taxation is combined with the economic incidence of government expenditures, the result ... from the state s taxing and spending policies. This is referred to as fiscal incidence . Empirical literature Early empirical studies of fiscal incidence date to the 1940s. Two early studies included ... as the essential framework for fiscal incidence studies conducted by the British government. Early ... found that overall fiscal incidence resulted in a net income redistribution redistribution of income ... limited scope and inadequate incidence analyses. Bishop departed from previous literature as well, basing ... overall distribution of fiscal incidence for 1961 and 1965. The results of Bishop s 1967 study were ... . In the 1990s a branch of fiscal incidence known as benefit incidence analysis grew in popularity ... impact of education, health and transfer spending programs. Benefit incidence analyses typically ... Wasylenko 1992 and Dominique van de Walle 1996 . Benefit incidence studies typically find spending ... official studies of fiscal incidence to assist lawmakers in the design of tax and spending policies ... fiscal incidence of Australia Australia s overall government operations. The United Kingdom s Office ... on household income. See also Public finance Tax incidence Economics References cite book first .... Thomas, and Wasylenko, Michael J. date 1992 title Benefit Incidence Analysis in Developing Countries ... Who Benefits from Health Sector Subsidies? Benefit Incidence Analysis http www.natsem.canberra.edu.au ... more details
Cleanup date March 2009 In graph theory , the incidence list is a variant of the adjacency list that allows for the description of the edges at the cost of additional edges. Instead of storing adjacent vertices, the list stores all of the edges that contain the referencing vertex. Edges are required to have two vertices. This variant was conceived by Goodrich and Tamassia. ref name A cite journal author Michael T. Goodrich M. T. Goodrich and Roberto Tamassia R. Tamassia title Data Structures and Algorithms in Java location Wiley, New York, NY year 1998 ref References reflist Combin stub Category Graph data structures ... more details
Summary Author Gummer85 Date Created 25 March 2009 Created using various simple graphics tools. Licensing PD self date April 2009 Copy to Wikimedia Commons bot Fbot priority true ... more details
Wiktionary angleAngle An angle is a geometrical figure that divides a circle. A hyperbolic angle is a geometrical figure that divides a hyperbola. Angle may also refer to Angle astrology , a cardinal point of an astrological chart Angle rib , an anatomical characteristic Angle, Pembrokeshire , Wales The Angle , in the American Civil War, an area of the Gettysburg battlefield Northwest Angle , known by locals as The Angle, the only place in the United States outside Alaska that is north of the 49th parallel Angles , a Germanic tribe that settled in Britain Angling , a fishing technique Angle, in Glossary of professional wrestling terms Angle professional wrestling terminology , a character s motivating story People Jared Angle , New York City Ballet principal dancer. Eric Angle , Brother of Kurt Angle, Professional Wrestler Kurt Angle , Olympic Games Olympic Gold Medalist in Amateur Wrestling , and Professional Wrestler Sharron Angle , Nevada politician. Tyler Angle , New York City Ballet soloist. See also Angle of attack Angle of incidenceAngle of parallelism Angle of repose Angle of view Angle Man Angles disambiguation Angel disambiguation Bloody Angle disambiguation Team Angle Disambig de Angle es ngulo desambiguaci n eu Angelu fr Angle homonymie pt Angle ru zh yue zh ... more details
Wiktionary critical angle Critical angle can refer to Critical angle optics the angle of incidence above which total internal reflection occurs Critical angle of attack , in aerodynamics the angle of attack which produces the maximum lift coefficient Critical angle of repose , in engineering the steepest angle of descent of a slope when the material is on the verge of sliding disambiguation ... more details
In fiber optics fiber optic telecommunication s, the launch angle has the following meanings The angle, with respect to the normal, at which a light line mathematics ray emerges from a surface. The beam divergence at an emitting surface, such as that of a light emitting diode LED , laser , lens optics lens , Prism optics prism , or optical fiber end face. At an end face of an optical fiber, the angle between an input ray and the fiber axis . If the end face of the fiber is perpendicular to the fiber axis, the launch angle is equal to the angle of incidence . References FS1037C MS188 Category Fiber optics telecomm stub ... more details
refimprove date November 2009 Image RF 8A CVA 41.JPEG thumb alt A United States Navy fighter aircraft with its landing gear and arrestor hook deployed. An RF 8A Crusader using its variable incidence wing during a landing approach A variable incidence wing has an adjustable angle of incidence in order to reduce landing and take off distances. It was patented in France on May 20, 1912 by Bulgaria n inventor George Boginoff. R FRPatent444010 One of the earlier designs to use it was the Supermarine Type 322 of 1943 intended, though not adopted, for aircraft carrier use. The necessary components add extra weight to the aircraft and increase maintenance costs. In some aircraft the benefits outweigh the costs, and variable incidence functionality is incorporated into the design, most notably with the F 8 Crusader , although other designs have used it, such as the Martin XB 51 . No modern aircraft has used this design since the F 8, and it was omitted from the derivative, subsonic A 7 Corsair II due to lower landing speeds and weights. See also Variable camber wing Variable sweep wing References reflist refs ref name FRPatent444010 cite patent FR 444010 ref Category Aircraft configurations Category Variable geometry wing aircraft Category Aircraft wing design aero stub ... more details
Grazing incidence X ray and neutron diffraction neutron diffraction GID , GIXD , GIND , typically from a crystalline structure uses small incident angles for the incoming X ray or neutron beam, so that diffraction can be made surface sensitive. It is used to study surfaces and layers because wave penetration is limited. Distances are in the order of nanometres. Below typically 80 of the critical angle of the surface material studied an evanescent wave is established for a short distance and is exponentially damped. Therefore Bragg reflections are only coming from the surface structure. An advantage of GIXD is that the electric field at the critical angle is amplified locally by a factor of four, therefore the GIXD signal is stronger. A disadvantage is the limited in plane spatial resolution beam footprint . When employed under very small scattering angles, the technique is called grazing incidence small angle scattering GISAS, GISAXS, GISANS , and requires quite special methodology. Further reading Jens Als Nielsen, Elements of Modern X ray Physics ISBN 0 471 498572 physics stub Category Scientific techniques de R ntgendiffraktometrie mit streifendem Einfall ... more details
the so called absolute angle of attack zero angle of attack corresponds to zero Lift coefficient coefficient of lift . Some British authors have used the term Angle of incidenceAngle of incidence of fixed wing aircraft angle of incidence instead of angle of attack . However, this can lead to confusion with the term riggers angle of incidence meaning the angle between the chord of an aerofoil and some .... See also Advance ratio Airfoil Angle of incidenceAngle of sideslip Bernoulli s principle ...Refimprove date August 2009 Image Angle of attack.svg thumb right 300px In this diagram, the black lines represent the flow of a fluid around a two dimensional airfoil shape. The angle &alpha is the angle of attack. In fluid dynamics , angle of attack AOA , or math alpha math Greek alphabet Greek letter alpha letter alpha is the angle between a reference line on a lifting body often the chord aircraft ... the lifting body and the fluid through which it is moving. Angle of attack is the angle between the lifting ..., the angle of attack of a wing or airfoil moving through air. In aerodynamics , angle of attack specifies the angle between the chord line of the wing of a fixed wing aircraft and the vector representing ... axis . ref cite journal title Summary of Methods of Measuring Angle of Attack on Aircraft url ... , Pitman Publishing Limited, London ISBN 0 273 31623 0 ref Relation between angle of attack and lift ... of a fixed wing aircraft varies uniquely with angle of attack. Increasing angle of attack is associated ... decreases. As the angle of attack of a fixed wing aircraft increases, Flow separation separation of the airflow ... cambered straight wing. A symmetrical wing has zero lift at 0 degrees angle of attack. The lift ... angle. Critical angle of attack The critical angle of attack is the angle of attack which produces maximum lift coefficient. This is also called the stall angle of attack . Below the critical angle of attack, as the angle of attack increases, the coefficient of lift Cl increases. At the same ... more details
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