|
Focal Point (other)
Focal point may refer to: * Focus (optics) * Focus (geometry) * Conjugate points, also called focal points * Focal point (game theory) * Unicom Focal Point, a portfolio management software tool * Focal point review, a human resources process for employee evaluation * ''Focal Point'' (album), a 1976 studio album by McCoy Tyner * " Focal Point: Mark of the Leaf", a ''Naruto'' episode See also * Foca Point, Signy Island, South Orkney Islands *Focal (other) Focal or FOCAL may refer to: *Focal (lexicographical website), an Irish lexicographical website *FOCAL (programming language), a programming language for the PDP-8 and similar machines *Focal (HP-41), for programming HP calculators *FOCAL (spacecr ... * Focus (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focus (optics)
In geometrical optics, a focus, also called an image point, is a point where ray (optics), light rays originating from a point on the object vergence (optics), converge. Although the focus is conceptually a point, physically the focus has a spatial extent, called the circle of confusion, blur circle. This non-ideal focusing may be caused by optical aberration, aberrations of the imaging optics. Even in the absence of aberrations, the smallest possible blur circle is the Airy disc caused by diffraction from the optical system's aperture; diffraction is the ultimate limit to the light focusing ability of any optical system. Aberrations tend to worsen as the aperture diameter increases, while the Airy circle is smallest for large apertures. An image, or image point or region, is in focus if light from object points is converged almost as much as possible in the image, and defocus aberration, out of focus if light is not well converged. The border between these is sometimes define ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focus (geometry)
In geometry, focuses or foci (; : focus) are special points with reference to which any of a variety of curves is constructed. For example, one or two foci can be used in defining conic sections, the four types of which are the circle, ellipse, parabola, and hyperbola. In addition, two foci are used to define the Cassini oval and the Cartesian oval, and more than two foci are used in defining an n-ellipse, ''n''-ellipse. Conic sections Defining conics in terms of two foci An ellipse can be defined as the locus (mathematics), locus of points for which the sum of the distances to two given foci is constant. A circle is the special case of an ellipse in which the two foci coincide with each other. Thus, a circle can be more simply defined as the locus of points each of which is a fixed distance from a single given focus. A circle can also be defined as the Circles of Apollonius, circle of Apollonius, in terms of two different foci, as the locus of points having a fixed ratio of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conjugate Points
In differential geometry, conjugate points or focal points are, roughly, points that can almost be joined by a 1-parameter family of geodesics. For example, on a sphere, the north-pole and south-pole are connected by any meridian. Another viewpoint is that conjugate points tell when the geodesics fail to be length-minimizing. All geodesics are ''locally'' length-minimizing, but not globally. For example on a sphere, any geodesic passing through the north-pole can be extended to reach the south-pole, and hence any geodesic segment connecting the poles is not (uniquely) ''globally'' length minimizing. This tells us that any pair of antipodal points on the standard 2-sphere are conjugate points.Cheeger, Ebin. ''Comparison Theorems in Riemannian Geometry''. North-Holland Publishing Company, 1975, pp. 17-18. Definition Suppose ''p'' and ''q'' are points on a pseudo-Riemannian manifold, and \gamma is a geodesic that connects ''p'' and ''q''. Then ''p'' and ''q'' are conjugate points al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focal Point (game Theory)
In game theory, a focal point (or Schelling point) is a solution that people tend to choose by default in the absence of communication in order to avoid Coordination game#Experimental results, coordination failure. The concept was introduced by the American economist Thomas Schelling in his book ''The Strategy of Conflict'' (1960). Schelling states that "[p]eople ''can'' often concert their intentions or expectations with others if each knows that the other is trying to do the same" in a cooperative situation (p. 57), so their action would converge on a focal point which has some kind of prominence compared with the environment. However, the conspicuousness of the focal point depends on time, place and people themselves. It may not be a definite solution. Existence The existence of the focal point is first demonstrated by Schelling with a series of questions. Here is one example: to determine the time and place to meet a stranger in New York City, but without being able to communi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unicom Focal Point
UNICOM Focal Point is a portfolio management and decision analysis tool used by the product organizations of corporations and government agencies to collect information and feedback from internal and external stakeholders on the value of applications, products, systems, technologies, capabilities, ideas, and other organizational artifacts—prioritize on which ones will provide the most value to the business, and manage the roadmap of how artifacts will be fielded, improved, or removed from the market or organization. UNICOM Focal Point is also used to manage a portfolio of projects, to understand resources used on those projects, and timelines for completion. The product is also used for pure product management—where product managers use it to gather and analyze enhancement requests from customers to decide on what features to put in a product, and develop roadmaps for future product versions. Overview UNICOM Focal Point is used for: * Scaled agile framework (SAFe) Methods, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focal Point Review
A focal point review (FPR) is a human resources Human resources (HR) is the set of people who make up the workforce of an organization, business sector, industry, or economy. A narrower concept is human capital, the knowledge and skills which the individuals command. Similar terms include ' ... process for employee evaluation. References {{management-stub Human resource management ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focal Point (album)
''Focal Point'' is a 1976 album by jazz pianist McCoy Tyner, his tenth to be released on the Milestone label. It was recorded during four days in August 1976 and features a septet fronted by three reed players ( Gary Bartz, Joe Ford and Ron Bridgewater) who were in part multiplied through overdubs. On one track Tyner is heard picking a dulcimer backed by tablas, evoking the sound of an Indian sitar. "Parody" is a duo with Eric Gravatt on drums. The album was digitally remastered at Fantasy Studios in 1999 and re-released on Original Jazz Classics. Reception Cook and Morton in their ''Penguin Guide to Jazz'' write that "''Focal Point'' looks to secure the firepower in the studio which the band generated in concert", but they suggest that the overdubbing of the horns "sometimes leads to stiffness in the ensemble sound". Nevertheless they "were a little surprised to find how well it's aged". The Allmusic review by Scott Yanow states "Because virtually all of McCoy Tyner's reco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark Of The Leaf
Mark may refer to: In the Bible * Mark the Evangelist (5–68), traditionally ascribed author of the Gospel of Mark * Gospel of Mark, one of the four canonical gospels and one of the three synoptic gospels Currencies * Mark (currency), a currency or unit of account in many nations * Bosnia and Herzegovina convertible mark, the currency of Bosnia and Herzegovina * East German mark, the currency of the German Democratic Republic * Estonian mark, the currency of Estonia between 1918 and 1928 * Finnish markka (), the currency of Finland from 1860 until 28 February 2002 * Polish mark (), the currency of the Kingdom of Poland and of the Republic of Poland between 1917 and 1924 German * Deutsche Mark, the official currency of West Germany from 1948 until 1990 and later the unified Germany from 1990 until 2002 * German gold mark, the currency used in the German Empire from 1873 to 1914 * German Papiermark, the German currency from 4 August 1914 * German rentenmark, a currency issued on 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foca Point
Signy Island is a small subantarctic island in the South Orkney Islands of Antarctica. It was named by the Norwegian whaler Petter Sørlle (1884–1933) after his wife, Signy Therese. The island is about long and wide and rises to above sea level. Much of it is permanently covered with ice. The average temperature range is to about in winter (i.e. in July). The extremes extend to . The island is separated from Coronation Island to the north by Normanna Strait, and from Moe Island to the southwest by Fyr Channel. On Signy Island, the British Antarctic Survey (BAS) maintains the Signy Research Station, a scientific station for research in biology. The base was opened on 18 March 1947, on the site of an earlier whaling station that had existed there in the 1920s. The station was staffed year-round until 1996; since that year it has been occupied only from November to April. It houses 10 people. Geography A number of locations on the island have been charted and indivi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focal (other)
Focal or FOCAL may refer to: *Focal (lexicographical website), an Irish lexicographical website *FOCAL (programming language), a programming language for the PDP-8 and similar machines *Focal (HP-41), for programming HP calculators *FOCAL (spacecraft), a proposed space telescope *FOCAL International, a trade body representing the film archive industry *Focal-JMLab, a French manufacturer of audio equipment *Focal Radio, a radio station based in Stoke-on-Trent, England *Focal neurologic signs See also *Focal point (other) *Focus (other) * {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
