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Scan
Scan, SCAN or Scanning may refer to: Science and technology Computing and electronics * Graham scan, an algorithm for finding the convex hull of a set of points in the plane * 3D scanning, of a real-world object or environment to collect three dimensional data * Counter-scanning, in physical micro and nanotopography measuring instruments like scanning probe microscope * Elevator algorithm or SCAN, a disk scheduling algorithm * Image scanning, an optical scan of images, printed text, handwriting or an object * Optical character recognition, optical recognition of printed text or printed sheet music * Port scanner, in computer networking * Prefix sum, an operation on lists that is also known as the scan operator * Raster scan, the rectangular pattern of image capture and reconstruction in television * Scan chain, a type of manufacturing test used with integrated circuits * Scan line, one line in a raster scanning pattern * Screen reading, on computers to quickly locate text eleme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Image Scanning
An image scanner—often abbreviated to just scanner—is a device that optically scans images, printed text, handwriting or an object and converts it to a digital image. Commonly used in offices are variations of the desktop ''flatbed scanner'' where the document is placed on a glass window for scanning. ''Hand-held scanners'', where the device is moved by hand, have evolved from text scanning "wands" to 3D scanners used for industrial design, reverse engineering, test and measurement, orthotics, gaming and other applications. Mechanically driven scanners that move the document are typically used for large-format documents, where a flatbed design would be impractical. Modern scanners typically use a charge-coupled device (CCD) or a contact image sensor (CIS) as the image sensor, whereas ''drum scanners'', developed earlier and still used for the highest possible image quality, use a photomultiplier tube (PMT) as the image sensor. A ''rotary scanner,'' used for high-speed document ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prefix Sum
In computer science, the prefix sum, cumulative sum, inclusive scan, or simply scan of a sequence of numbers is a second sequence of numbers , the sums of prefixes ( running totals) of the input sequence: : : : :... For instance, the prefix sums of the natural numbers are the triangular numbers: : Prefix sums are trivial to compute in sequential models of computation, by using the formula to compute each output value in sequence order. However, despite their ease of computation, prefix sums are a useful primitive in certain algorithms such as counting sort,. and they form the basis of the scan higher-order function in functional programming languages. Prefix sums have also been much studied in parallel algorithms, both as a test problem to be solved and as a useful primitive to be used as a subroutine in other parallel algorithms.. Abstractly, a prefix sum requires only a binary associative operator ⊕, making it useful for many applications from calculating well-separated pai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scan Chain
Scan chain is a technique used in design for testing. The objective is to make testing easier by providing a simple way to set and observe every flip-flop in an IC.The basic structure of scan include the following set of signals in order to control and observe the scan mechanism. #Scan_in and scan_out define the input and output of a scan chain. In a full scan mode usually each input drives only one chain and scan out observe one as well. #A scan enable pin is a special signal that is added to a design. When this signal is asserted, every flip-flop in the design is connected into a long shift register. #Clock signal which is used for controlling all the FFs in the chain during shift phase and the capture phase. An arbitrary pattern can be entered into the chain of flip-flops, and the state of every flip-flop can be read out. In a full scan design, automatic test pattern generation (ATPG) is particularly simple. No sequential pattern generation is required - combinatorial test ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DMSA Scan
A DMSA scan is a radionuclide scan that uses dimercaptosuccinic acid (DMSA) in assessing renal morphology, structure and function. Radioactive technetium-99m is combined with DMSA and injected into a patient, followed by imaging with a gamma camera after 2-3 hours. A DMSA scan is usually static imaging, while other radiotracers like DTPA and MAG3 are usually used for dynamic imaging to assess renal excretion. The major clinical indications for this investigation are # Detection and/or evaluation of a renal scar, especially in patients having vesicoureteric reflux (VUR) # Small or absent kidney (renal agenesis), # Ectopic kidneys (sometimes cannot be visualized by ultrasonography of abdomen due to intestinal gas) # Evaluation of an occult duplex system, # Characterization of certain renal masses, # Evaluation of systemic hypertension especially young hypertensive and in cases of suspected vasculitis. # It is sometimes used as a test for the diagnosis of acute pyelonephritis. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graham Scan
Graham's scan is a method of finding the convex hull of a finite set of points in the plane with time complexity O(''n'' log ''n''). It is named after Ronald Graham, who published the original algorithm in 1972. The algorithm finds all vertices of the convex hull ordered along its boundary. It uses a stack to detect and remove concavities in the boundary efficiently. Algorithm The first step in this algorithm is to find the point with the lowest y-coordinate. If the lowest y-coordinate exists in more than one point in the set, the point with the lowest x-coordinate out of the candidates should be chosen. Call this point ''P''. This step takes O(''n''), where ''n'' is the number of points in question. Next, the set of points must be sorted in increasing order of the angle they and the point ''P'' make with the x-axis. Any general-purpose sorting algorithm is appropriate for this, for example heapsort (which is O(''n'' log ''n'')). Sorting in order of angle does not require co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Partner-assisted Scanning
Partner-assisted scanning or listener-assisted scanning is an augmentative and alternative communication technique used to enable a person with severe speech impairments to communicate. The approach is used with individuals who, due to sickness or disability, have severe motor impairments and good memory and attention skills. It is used as an alternative to direct access (e.g. pointing) to symbols, pictures, or speech generating devices when these are not used.Lilienthal, N. (2009)What is Partner Assisted Visual Scanning?Retrieved May 2010. Users of partner-assisted scanning Partner-assisted scanning is a technique used with children who have severe motor and communication impairments, and especially those with additional visual impairment, those who do not yet have an established alternative form of communication, or who are unable to use their usual method, perhaps because their electronic speech output device is being repaired. Adults may also use scanning with a partner when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scan Furniture
Scan Furniture was a co-operative furniture chain that sold modern Scandinavian furniture that operated six stores in the metropolitan Baltimore-Washington, D.C. area. Unusually, it was founded in 1938 as a grocery store in Greenbelt, Maryland, which became the Greenbelt Cooperative in 1940. The cooperative A cooperative (also known as co-operative, co-op, or coop) is "an autonomous association of persons united voluntarily to meet their common economic, social and cultural needs and aspirations through a jointly owned and democratically-contro ... grew to include a gas station and furniture store. In 1984, the board of directors sold the grocery store and gas operations to concentrate on its Scan division. The grocery store remains a cooperative called the Greenbelt Consumers Cooperative. In 1978 Scan Furniture was the largest teak importer in the country and imported about $10 million of teak every year. It was based in Rockville, Maryland, with a distribution cent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SCAN Health Plan
SCAN Health Plan (SCAN) is a not-for-profit, Medicare Advantage based in Long Beach, California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori .... Founded in 1977, SCAN provides healthcare coverage to Medicare beneficiaries in California, Arizona, and Nevada, currently serving nearly 270,000 members. It is one of the largest not-for-profit Medicare Advantage plans in the country. SCAN Health Plan is part of SCAN Group, a mission-driven organization that is tackling some of the biggest issues in health-care for older adults. Early history SCAN helped implement a huge shift in healthcare in the late 1970s when a group of senior activists joined city officials in an effort to make healthcare services more accessible, more connected and more affordable for Long Beach's growing number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HKScan
HKScan Oyj () is a Finnish manufacturer of meat foods and products, but nowadays its product range also includes ready meals and pet foods. It is based in Turku. In the 1990s and 2000s the company – by then known as HK Ruokatalo Oy – targeted the international market, acquiring meat production companies around the Baltic Sea: In Sweden, Poland, Estonia, Latvia and Lithuania – including the Swedish Scan AB in 2007, resulting in the modern-day name of the company. HK is originally an initialism of Helsingin Kauppiaat ("Helsinki Merchants"), a company that was acquired by LSO in 1991. HK is the best known brand of the company in its native Finland. Its Finnish subsidiary is still known as HK Ruokatalo Oy ("HK Food House Inc."). HKScan Oyj is the fifth largest food manufacturer in Europe and a company listed in the Helsinki Stock Exchange. History :''Text in this section is largely based on a translation of the company'history page' The history of the company in its current f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scan (company)
Scan is a mobile app development company headquartered in Provo, Utah, United States. The company was founded in January 2011 by Garrett Gee together with his college friends Ben Turley and Kirk Ouimet. The company, owned and operated by Scan, Inc,Scan Inc"Foursquare Company Profile Page" ‘’Foursquare’’, Retrieved on September 12, 2013. was acquired by Snapchat in 2014. Overview Scan builds products and services related to 'scannable' items such as QR codes.Ifeanyl, KC“Bum Rushing QR Code Competitors: Scan” ‘’ Inc.com’’, March 4, 2012. Retrieved on July 22, 2013. Scan's products consist of mobile applications that consumers use for reading a variety of physical codes such as QR codes, NFC, and machine-recognizable images ( Computer Vision).Taub, Alexander“QR Codes Are Dead! Long Live QR Codes! A Conversation With Scan’s Founder, Garrett Gee” ‘’Forbes’’, December 6, 2012. Retrieved on July 22, 2013. Scan's website allows for the creation of QR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seattle Community Access Network
Seattle Community Access Network (SCAN) is one of the Public, educational, and government access (PEG) cable television channels in Seattle, Washington. The station provides camera equipment, television studios and training that allow residents of King County to create and cablecast their own television shows for a small fee. The station is carried on Comcast and Broadstripe cable systems in King County and the greater Puget Sound region except for six cities covered by Puget Sound Access. History Seattle first acquired a Public-access television station in 1983. Known simply as Channel 29, the station was often referred to as ''Seattle Public Access Network''. The station was operated out of the Northwest Access and Production Center and was owned by the cable company. In August 1999, Seattle Community Access Network was formed as a non-profit organization in order to take over station operations from TCI. Part of the reason for creating the organization was to handle complain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Resonance Imaging
Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body. MRI does not involve X-rays or the use of ionizing radiation, which distinguishes it from CT and PET scans. MRI is a medical application of nuclear magnetic resonance (NMR) which can also be used for imaging in other NMR applications, such as NMR spectroscopy. MRI is widely used in hospitals and clinics for medical diagnosis, staging and follow-up of disease. Compared to CT, MRI provides better contrast in images of soft-tissues, e.g. in the brain or abdomen. However, it may be perceived as less comfortable by patients, due to the usually longer and louder measurements with the subject in a long, confining tube, though "Open" MRI designs mostly relieve this. Additionally, implants and oth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
