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Vertex
Vertex, vertices or vertexes may refer to: Science and technology Mathematics and computer science *Vertex (geometry), a point where two or more curves, lines, or edges meet *Vertex (computer graphics), a data structure that describes the position of a point *Vertex (curve), a point of a plane curve where the first derivative of curvature is zero *Vertex (graph theory), the fundamental unit of which graphs are formed * Vertex (topography), in a triangulated irregular network *Vertex of a representation, in finite group theory Physics *Vertex (physics), the reconstructed location of an individual particle collision *Vertex (optics), a point where the optical axis crosses an optical surface *Vertex function, describing the interaction between a photon and an electron Biology and anatomy *Vertex (anatomy), the highest point of the head * Vertex (urinary bladder), alternative name of the apex of urinary bladder *Vertex distance, the distance between the surface of the cornea of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertex Pharmaceuticals
Vertex Pharmaceuticals is an American biopharmaceutical company based in Boston, Massachusetts. It was one of the first biotech firms to use an explicit strategy of rational drug design rather than combinatorial chemistry. It maintains headquarters in South Boston, Massachusetts, and three research facilities, in San Diego, California, and Milton Park, near Oxford, England. History Vertex was founded in 1989 by Joshua Boger and Kevin J. Kinsella . to ''"transform the way serious diseases are treated."'' The company's beginnings were profiled by Barry Werth in the 1994 book, '' The Billion-Dollar Molecule''. His 2014 book, ''The Antidote: Inside the World of New Pharma'', chronicled the company's subsequent development over the next two decades. By 2004, its product pipeline focused on viral infections, inflammatory and autoimmune disorders, and cancer. In 2009, the company had about 1,800 employees, including 1,200 in the Boston area. By 2019 there were about 2,500 employ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertex Holdings
Vertex Venture Holdings, also known as Vertex Holdings, is an investment holding company with a group of venture capital funds worldwide. A subsidiary of Temasek Holdings, the company focuses on venture capital investment opportunities in the information technology and healthcare markets through its global family of six direct investment venture funds. Vertex provides anchor funding and operational support to these funds. Each fund has its own General Partners and investment teams, focusing on different regional markets. Its six funds are based across Southeast Asia and India, United States of America, China and Israel. Incorporated in 1988, Vertex Holdings started as a CVC under Singapore Technologies. The company became a full subsidiary of Temasek Holdings in 2004, after the dot-com bubble. In 2008, a new CEO, Chua Kee Lock, was brought in and in 2015, Vertex Holdings was transformed to an investment holding company, with direct investments made by a network of five VC funds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertex Railcar
Vertex Railcar was a jointly owned Chinese-American manufacturer of railroad rolling stock. It was founded in 2014 and operated a facility in Wilmington, North Carolina that builds freight railcars. The manufacturer closed operations at end of 2018. The company was founded as Vertex Rail Technologies, based in Massachusetts, in 2014, and publicly announced in November its plans to purchase a former Terex manufacturing facility in Wilmington and convert it to railcar construction. The cost of renovating the factory was estimated at $60 million, and Vertex said that it would employ 1,300 people at full-scale production. In April 2015, Vertex Rail Technologies entered into a joint venture with Chinese manufacturer CRRC Corporation and Hong Kong-based private equity firm Majestic Legend Holdings, under which the manufacturing operation was named Vertex Railcar, CRRC provided railcar designs and some components, and Majestic Legend invested $6 million. Once Vertex received regulatory ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertex Resource Group
Vertex Resource Group Ltd. (Vertex) is a publicly traded environmental services company based in Sherwood Park and is traded on the TSX Venture Exchange, under the stock symbol VTX. Terry Stephenson has been president since 2005. The company has expanded through organic growth and acquisitions to provide services across Western Canada and within select regions of the United States. History 1962 - 2012 Vertex has roots dating back to 1962, the date in which the acquired company Three Star Trucking Ltd. was established. 2012 - Present In 2014, Vertex acquired Navus Environmental Inc. Vertex was also named a Gold Standard Winner of Canada's Best Managed Companies. In 2015, Vertex acquired Ignite Energy Services Ltd., Glacier Ridge Ventures Ltd., and Tar Energy Services Ltd. On October 18, 2017, Vertex became a publicly traded company with common shares traded on the Toronto Venture Stock Exchange. In 2018, Vertex acquired HMA Land Services, Sonic Oilfield Services Ltd. TSL ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertex (geometry)
In geometry, a vertex (in plural form: vertices or vertexes) is a point (geometry), point where two or more curves, line (geometry), lines, or edge (geometry), edges meet. As a consequence of this definition, the point where two lines meet to form an angle and the corners of polygons and polyhedron, polyhedra are vertices. Definition Of an angle The ''vertex'' of an angle is the point where two Line (mathematics)#Ray, rays begin or meet, where two line segments join or meet, where two lines intersect (cross), or any appropriate combination of rays, segments, and lines that result in two straight "sides" meeting at one place. :(3 vols.): (vol. 1), (vol. 2), (vol. 3). Of a polytope A vertex is a corner point of a polygon, polyhedron, or other higher-dimensional polytope, formed by the intersection (Euclidean geometry), intersection of Edge (geometry), edges, face (geometry), faces or facets of the object. In a polygon, a vertex is called "convex set, convex" if the internal an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertex Inc
Vertex, Incorporated is a tax compliance software and services company based in King of Prussia, Pennsylvania King of Prussia (also referred to as KOP) is a census-designated place in Upper Merion Township in Montgomery County, Pennsylvania, United States. As of the 2020 census, its population was 22,028. The community took its unusual name in the 18th ..., USA. Vertex was founded in 1978 by Ray Westphal. Jeff Westphal, Stevie Westphal Thompson and Amanda Westphal Radcliffe purchased interest in the company from their father in 2000. On July 29, 2020, the company went public on the Nasdaq stock exchange. References {{Authority control Companies based in Montgomery County, Pennsylvania American companies established in 1978 Companies listed on the Nasdaq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertex (company)
Vertex is a call centre operator that also offers a variety of other business process outsourcing (BPO) and customer management outsourcing services. Originally the back office service function inside UK utility company United Utilities, Vertex was spun out as a separate company in 1996. In 2007, United Utilities sold Vertex to a consortium of investors (Oak Hill Capital, GenNx360, Knox Lawrence International) for £217m. Vertex services include: *Business process outsourcing *Customer Management *Finance & Accounting * HR Outsourcing *Software *Offshoring *Debt Management Management (or managing) is the administration of an organization, whether it is a business, a nonprofit organization, or a government body. It is the art and science of managing resources of the business. Management includes the activities o ... * Telecom References {{DEFAULTSORT:Vertex (Company) Outsourcing companies Business process outsourcing companies of the United Kingdom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertex (album)
''Vertex'' is a studio album by Canadian hip hop musician Buck 65. Reception Mark Pytlik of AllMusic AllMusic (previously known as All Music Guide and AMG) is an American online music database. It catalogs more than three million album entries and 30 million tracks, as well as information on musicians and bands. Initiated in 1991, the databas ... gave ''Vertex'' 4 stars out of 5, calling it "an inadvertent paean to the possibilities of imagination and innovation." Track listing References Further reading * External links * {{Authority control 1997 albums Buck 65 albums ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertex (band)
Vertex was a band formed in 1995 featuring singer Stephen Pearcy (Ratt, Arcade, Vicious Delite, Nitronic), guitarist Al Pitrelli (Danger Danger, Hotshot, Alice Cooper, Asia, Savatage, Megadeth, Trans-Siberian Orchestra), and drummer Hiro Kuretani (WXXI, Trancentral Station). They released a self-titled album in 1996 as well as a single for the track "One Like a Son" that included two remixes by Eric Caudieux and Stan Katayama. A video for this single was also released. All bass parts were played by Pitrelli, who also recorded keyboards. Bob Daisley played bass on tracks "Time and Time" and "Ain't Gonna Be". The album is a concept album with a single narrator, chain of events and re-occurring characters. Kuretani, who had met Stephen Pearcy at a gig where he opened for Stephen's band Arcade. Bassist Robbie Crane was a touring bassist for Vertex, but was not on the band's album. The band's music is categorized as industrial rock. Stephen Pearcy currently has rejoined Ratt and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertex Distance
Vertex distance is the distance between the back surface of a corrective lens, i.e. glasses (spectacles) or contact lenses, and the front of the cornea. Increasing or decreasing the vertex distance changes the optical properties of the system, by moving the focal point forward or backward, effectively changing the power of the lens relative to the eye. Since most refractions (the measurement that determines the power of a corrective lens) are performed at a vertex distance of 12–14 mm, the power of the correction may need to be modified from the initial prescription so that light reaches the patient's eye with the same effective power that it did through the phoropter or trial frame. Vertex distance is important when converting between contact lens and glasses prescriptions and becomes significant if the glasses prescription is beyond ±4.00 diopters (often abbreviated D). The formula for vertex correction is F_c = \left(F^ - x\right)^, where F is the power corrected for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertex (curve)
In the geometry of plane curves, a vertex is a point of where the first derivative of curvature is zero. This is typically a local maximum or minimum of curvature, and some authors define a vertex to be more specifically a local extremum of curvature. However, other special cases may occur, for instance when the second derivative is also zero, or when the curvature is constant. For space curves, on the other hand, a vertex is a point where the torsion vanishes. Examples A hyperbola has two vertices, one on each branch; they are the closest of any two points lying on opposite branches of the hyperbola, and they lie on the principal axis. On a parabola, the sole vertex lies on the axis of symmetry and in a quadratic of the form: :ax^2 + bx + c\,\! it can be found by completing the square or by differentiation., p. 127. On an ellipse, two of the four vertices lie on the major axis and two lie on the minor axis. For a circle, which has constant curvature, every point is a verte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertex (graph Theory)
In discrete mathematics, and more specifically in graph theory, a vertex (plural vertices) or node is the fundamental unit of which graphs are formed: an undirected graph consists of a set of vertices and a set of edges (unordered pairs of vertices), while a directed graph consists of a set of vertices and a set of arcs (ordered pairs of vertices). In a diagram of a graph, a vertex is usually represented by a circle with a label, and an edge is represented by a line or arrow extending from one vertex to another. From the point of view of graph theory, vertices are treated as featureless and indivisible objects, although they may have additional structure depending on the application from which the graph arises; for instance, a semantic network is a graph in which the vertices represent concepts or classes of objects. The two vertices forming an edge are said to be the endpoints of this edge, and the edge is said to be incident to the vertices. A vertex ''w'' is said to be ad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
