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Encyclopedia results for Array slicing

Array slicing





Encyclopedia results for Array slicing

  1. Array slicing

    to actually eliminate the trivial indices. General array slicing can be implemented whether or not built into the language by referencing every array through a dope vector or descriptor &mdash a record that contains the address of the first array element, and then the range of each index and the corresponding coefficient in the indexing formula. This technique also allows immediate array transpose ... APL 1957 had very flexible multi dimensional array slicing, which contributed much to the language ... slicing and trimming features. Array slicing facilities have been incorporated in several modern languages ... source 1998 S Lang programming language S Lang Array slicing was introduced in version 1.0. Earlier ... language APL . Slicing looks as follows source lang d a 3, 1, 5, 7 assign an array to the variable ... array. See also Comparison of programming languages array Slicing Category Arrays Category Programming ...About the data structure operation other uses of slicing Slicing disambiguation In computer programming , array slicing is an operation that extracts certain elements from an array and packages them as another array, possibly with different number of indices or dimensions and different index ranges. Two ... vector . Depending on the programming language and context, the elements of the new array may be aliasing computing aliased to i.e., share memory with those of the original array. Details For one ... slicing operation is extraction of zero or more consecutive elements. Thus, if we have a vector containing elements 2, 5, 7, 3, 8, 6, 4, 1 , and we want to create an array slice from the 3rd to the 6th ... dimensional slices rectangular matrices from a three dimensional array. However, since the range ... the indices always start at zero, the dope vector of an array with d indices has at least 1 2 d ... Pascal , the dope vector needs 1 3 d entries. If the array abstraction does not support true negative ... used to specify an offset from the end of the array in that dimension. In 1 based schemes, 1 generally ...   more details



  1. Slicing

    disambig Wiktionary slicing Slicing may refer to Slicing, a mechanical process, see Cutting Slicing interface design , image slicing for web design and interface design Program slicing , a set of software engineering methods Object slicing , an object oriented programming issue Array slicing , an operation on array in computer science Slicing strategy of trading, a financial trading strategy when a huge trading order is divided into small portions slices , which are then traded separately at different time during a trading day See also Slice disambiguation de Slicing ru ...   more details



  1. Array

    An array is a systematic arrangement of objects, usually in rows and columns. Specifically, it may refer ... at run time, including Array data structure , an arrangement of items at equally spaced addresses in computer memory Array data type , used in a programming language to specify a variable that can be indexed Associative array , an abstract data structure model that generalizes arrays to arbitrary indices or various kinds of the above, such as Bit array or bit vector Dynamic array , allocated at run time Parallel array of records, with each field stored as a separate array Sparse array , with most elements omitted, to store a sparse matrix Variable length array Jagged array , where the rows have different lengths individually or various related concepts Vector processor Array processor , a computer to process arrays of data not to be confused with a processor array Array programming , using matrix algebra notation in programs not the same as array processing Array slicing , the extraction of sub arrays of an array or also Global Arrays , a library for parallel processing Intel Array Visualizer , a piece of scientific graphics software In mathematics and statistics An array or matrix mathematics e.g. a Monge array , a Costas array A standard array in coding theory In statistics, arrays are a name for some kinds of Category Experimental design Intersection array a concept of category theory The thinned array curse or sparse array curse, a theorem about elecromagnetic waves In technology ... array, such as a phased array , a tower array , etc. A speaker array, used to produce directional Sound Asynchronous array of simple processors Ball grid array , pin grid array , and land grid array , ways to connect integrated circuits Cache Array Routing Protocol CARP Color filter array , placed over an imaging array Disk array , such as the RAID Field emitter array , an electron source Gate array , including a field programmable gate array FPGA Halbach array , an arrangement of magnets ...   more details



  1. Program slicing

    About program slicing other uses of slicing Slicing disambiguation In computer programming , program slicing is the computation of the set of programs statements, the program slice , that may affect the values at some point of interest, referred to as a slicing criterion . Program slicing can be used in debugging to locate source of errors more easily. Other applications of slicing include software ... analysis , and Non interference security information flow control . Slicing techniques have been seeing a rapid development since the original definition by Mark Weiser . At first, slicing was only ... and Janusz Laski introduced dynamic slicing , which works on a specific execution of the program for a given execution trace . Other forms of slicing exist, for instance path slicing. Static slicing ... for a slicing criterion C x,V , where x is a statement in program P and V is a subset of variables in P ... write sum write product source This new program is a valid slicing of the above program with respect ... sum source In fact, most static slicing techniques, including Weiser s own technique, will also ... sum code is not dependent on the statement itself. Dynamic slicing Makes use of information about ... of the program. An example to clarify the difference between static and dynamic slicing. Consider ... of static slicing, since we look at the whole program unit irrespective of a particular execution ... of dynamic slicing we consider a particular execution of the program, wherein the if block ... implements slicing algorithms on C program s. References Mark Weiser . Program slicing . Proceedings ... Press, March 1981. Mark Weiser . Program slicing . IEEE Transactions on Software Engineering, Volume ... of program slicing techniques . Journal of Programming Languages, Volume 3, Issue 3, pages 121 189, September 1995. David Binkley and Keith Brian Gallagher. Program slicing . Advances in Computers, Volume 43, pages 1 50, Academic Press , 1996. Andrea de Lucia. Program slicing Methods and applications ...   more details



  1. Beat slicing

    orphan date April 2010 Beat slicing is the process of using computer programs to slice an audio file of a drumloop in smaller sections, separating different drumhits. This is employed to rearrange the beat with either a sequencer or play them with a sampler musical instrument sampler , with the results ranging from changing particular hits to completely rearranging the flow of the beat. ref http www.soundonsound.com sos jun04 articles beatslicing.htm ref Slicing a beat also allows the tempo of the beat to be altered heavily in music sequencers, without resulting downsides such as the pitch being increased or decreased. This process is the most prominent in genres of Drum and bass , Hip Hop , Glitch music Glitch and Intelligent Dance Music IDM , the two latter being notorious for their prominent artists rearranging and altering beats in extreme ways. Common programs used for beat slicing Ableton Live ReCycle program ReCycle Renoise Reaktor Max MSP FL Studio References Reflist 2 Category Audio editors ...   more details



  1. Density slicing

    Context date October 2009 Expert subject Computer science date June 2009 Mergeto false color Pseudo color date April 2010 Density slicing is a digital data interpretation method used in analysis of remote sensing remotely sensed imagery to enhance the information gathered from an individual brightness band. Density slicing is done by dividing the range of brightnesses in a single band into intervals, then assigning each interval to a colour. ref J. B. Campbell, Introduction to Remote Sensing , 3rd ed., Taylor & Francis, p. 153 ref For example, in a black and white Thermography thermal image the temperature values in the image can be split into bands of 2 C, and each band represented by a colour of the spectrum . Therefore the temperature information in the image can be analysed more easily because the differences between the colours are greater than the black and white and therefore it is easier to analyse the data contained in the image. Density slicing is sometimes referred to as double threshold . References reflist DEFAULTSORT Density Slicing Category Imaging Category Image processing ...   more details



  1. Object slicing

    About object oriented programming other uses of slicing Slicing disambiguation Unreferenced date July 2009 In object oriented programming , a subclass typically extends its superclass by defining additional member variables. If a superclass instance is assigned its value from a subclass instance, member variables defined in the subclass cannot be copied, since the superclass has no place to store them. This is a natural and unavoidable consequence of assignment by value from subclass objects. The term object slicing is sometimes used to refer to this aspect of assignment by value to a superclass instance. Object slicing is also used to refer to a more subtle, problematic, case in which an object assignment by value appears to be to a superclass instance but is actually to a subclass instance. From the perspective of object memory layout, the member variables of the source instance can be thought of as having been sliced off , leaving the corresponding member variables in the destination instance unchanged . It is this partial assignment arguably a more apt term that often surprises programmers and leads to unintended consequences. Unexpected object slicing can happen in languages such as C in which assignment by value is not polymorphism in object oriented programming polymorphic . It is not possible in Java programming language Java , which allows object assignment only by reference, or the D programming language D programming language , which allows object inheritance only through reference types. Or date July 2009 For example, in C source lang cpp class A int a var class B public A int b var B &getB static B b return b A a getB expected b.b var is not copied to a B b2 A a2 &b2 a2 getB unexpected b.b var is not copied to b2.b var. source DEFAULTSORT Object Slicing Category Object oriented programming ...   more details



  1. Thin-slicing

    Thin slicing is a term used in psychology and philosophy to describe the ability to find patterns in events based only on thin slices, or narrow windows, of experience. ref Malcolm Gladwell Gladwell, Malcolm 2007 . Blink book Blink . Back Bay Books, Little, Brown and Company, first published 2005, p. 23. ref The term seems to have been coined in 1992 by Nalini Ambady and Robert Rosenthal psychologist ... Psychology, 45 4 , 1052 1055. doi 10.1016 j.jesp.2009.05.017 ref The term thin slicing means making ... thin slicing is an unconscious behavior. Thin slicing also has a key affect in biological and sociocultural .... 201 271 . ref Blink One of the most influential books on thin slicing is Blink book Blink written ... which exploit the idea of thin slicing. Gladwell describes how a museum purchases an Art Sculpture ... of thin slicing. Experiments Dr. Alberchsten and Dr. Meissner of the University of Texas at El ... detection task. In the first experiment, a thin slicing manipulation was used to show that intuitive ... through affects on thin slicing. Uses in media Dr. Phil , the television program is an example of thin slicing. Dr. Phil s thin slicing ability of cutting through bull and getting through to the main .... Phil s method of thin slicing is detrimental to people s Self destructive behavior destructive behaviors ... the same time frame of thin slicing and might also have a direct correlation. Many other uses of thin slicing are implied and seen throughout the media such as firemen making split second decisions, or cops knowing something is wrong by simply a gut feeling. All these imply and show that thin slicing ... slicing provides a basis for extrapolation of all different sorts, there has to be limitations to the basis on how much one can actually use thin slicing for scientific accurate analysis. There are many different variables which can confound the data, such as emotions. Overall, thin slicing can provide ... Empty section date December 2010 Notes Reflist DEFAULTSORT Thin Slicing Category Psychology ...   more details



  1. Time slicing

    by time slicing is derived from the fact that essentially only those parts of the stream which ... data rate. Image DVB H DVB T together.PNG thumb 400px The time slicing principle example of a service ... of an individual service, is a direct measure of the power saving provided by time slicing. Bursts ... of the underlying MPEG transport stream , because they are created after applying Time Slicing ... or average video bitrate is known before applying time slicing. math T OFF frac R B R C T ON math The energy ... 0.96 frac T Sync B B cdot 100 math Benefits and Disadvantages Time slicing requires a sufficiently ... currently selected. Time slicing offers another benefit for the terminal architecture ... DEFAULTSORT Time Slicing Category Digital television Category High definition television Category Broadcast engineering ca Time slicing es Time slicing ru Time slicing ...   more details



  1. Bit slicing

    about the central processing unit processor construction technique bit slicing as bit plane separation used in computer graphics and image processing bit plane Bit slicing is a technique for constructing a central processing unit processor from modules of smaller bit width. Each of these components processes one bit field or slice of an operand . The grouped processing components would then have the capability to process the chosen full word length of a particular software design. Operational details Bit slice processors usually consist of an arithmetic logic unit ALU of 1, 2, 4 or 8 bits and control lines including Carry arithmetic carry or Arithmetic overflow overflow signals that are internal to the processor in non bitsliced designs . For example, two 4 bit ALUs could be arranged side by side, with control lines between them, to form an 8 bit,16 bit,32 bit words so the designer can add as many slices he wants to make it to manipulate longer words lengths . A microsequencer or Control ROM would be used to execute logic to provide data and control signals to regulate function of the component ALUs. Examples of bit slice microprocessor modules can be seen in the Intel 3000 family, the AMD Am2900 AMD s Am2900 family the National Semiconductor IMP 16 and IMP 8 family, and the 74181 . Historical necessity Bit slicing although it was not called that was also used in computers before integrated circuits. The first bit sliced machine was EDSAC 2 , built at the University of Cambridge Mathematical Laboratory in 1956 8. Another example was the Storage Address Registers StARs of the IBM 1401 , which were built on IBM Standard Modular System cards containing a one bit slice of the four registers in the basic machine. Before the era of modern computers mid 1970s through late 1980s ... advantage in the late 60 s to mid 80 s being though, that bit slicing made it economically possible ... bit sliced tea time A bitslicing primer cs Bit slicing de Bit Slice es Bit slicing ko ja ...   more details



  1. The Slicing of the Demon

    Infobox television show name The Slicing of the Demon image Image SlicingDemonsTVB.jpg 200px caption Official poster show name 2 genre Costume drama br Crime fiction Crime Thriller genre thriller br Paranormal format Serial drama creator developer writer Lee Man br Leung Yan Tung br Lai Sin Yee br Kuk Hin Leung br Cheung Chung Chai br Yau Fuk Hing director Chan San Hap br Lee Shu Fan br Hui Sui Ping br Koon Kwok Wai starring Sunny Chan br Michael Tse br Bernice Liu br Elliot Ngok br Angela Tong theme music composer Tang Chi Wai opentheme Syun Yung Zoi Yi Ma performed by Bernice Liu endtheme composer country Hong Kong language Cantonese num series num episodes 20 list episodes executive producer Chong Wai Kin producer editor location cinematography camera Multi camera setup Multi camera runtime 42 &ndash 45 minutes company Television Broadcasts Limited TVB distributor network picture format 16 9 HDTV 1080i audio format first run first aired last aired status Warehoused preceded by followed by related website production website Chinese t s j Hung1 Sing4 Gai3 Zung1 Gai3 The Slicing of the Demon is a Hong Kong Television Broadcasts Limited TVB television series produced by Chon Wai Kin. It was released overseas in March List of TVB series 2007 2007 . Synopsis During the Ming Dynasty , executioner To Sei hoi and his god brother, Shui Yu chan, a doctor, accidentally enter the town of Cheung Lung. Cheung Lung appears to be a happy and peaceful place. However, underneath the facade, it s hiding a very big secret. The brothers meet the town s wealthiest man Fok Tin ... Wong Bik yuk Sherming Yiu Lau Hoi fuk Ellesmere Choi External links http www.spcnet.tv TVB Series The Slicing of the Demon p771.html SPCNET.tv The Slicing of the Demon Reviews en icon 2007 TVB DEFAULTSORT Slicing Of The Demon Category TVB television programmes Category Television series set in the Ming Dynasty nl The slicing of the demon zh ...   more details



  1. Slicing Grandpa

    Infobox musical artist See Wikipedia WikiProject Musicians Name Slicing Grandpa Img Little skull dude.jpg Img capt Slicing Grandpa Logo Little Skull Dude Img size Landscape Background group or band Origin Seattle, Washington , United States USA Genre noise music Noise Experimental Rock Years active 1993 1995 1997 present Label Strain Theory Records Scatological Liberation Front Associated acts Tractor Sex Fatality br Thee Wickermen br Krash Un Lurne br Kount Fistula br The Rebellion URL http www.myspace.com slicinggrandpa Current members John Laux, Lance Tarr, Gerald Hansen, Evan Martinez Past members Charlotte Aurevoir br Ward Reeder br Nick Martinez br Ross Townsend br Old Vibro Slicing Grandpa is an experimental music noise rock band based in Seattle, Washington . The group formed in the spring of 1993 in Elmira, New York , by John Laux and Lance Tarr. ref name test http www.terminal boredom.com Link terminal boredom ref The group s sound is minimalistic, repetitive and harsh, with recordings tending to be produced at high volume on inexpensive handheld recorders. The band s sound is sometimes compared to that of Smegma band Smegma . ref name tintmixtapes http www.tinymixtapes.com 2007 Eureka Albums of 2007 Link tinymixtapes ref The band has released numerous Extended play EP s and singles over the years, with the majority of more recent releases being put out on vinyl records . Compilation 7 record projects include one with San Francisco based Rubber O Cement, one with both Penetration Camp and Sparkle Girl also in Seattle , and one with France s Placenta Popeye. In February 2009, Slicing Grandpa played a show at a Seattle performance space, the Josephine, along with noise artist John Wiese . ref name John Wiese http home.earthlink.net johnwiese previousevents.html Link ... 1997 Silo of Blood EP STR 1998 Pig Blood Blues STR 1998 Slicing Grandpa best of for a debute STR 2001 ... 2009 References reflist External links http www.discogs.com artist Slicing Grandpa http siltbreeze.com ...   more details



  1. Salami slicing

    Salami slicing is a series of many minor actions, often performed by clandestine means, that together results in a larger action that would be difficult or illegal to perform at once. The term is typically used pejoratively . An example of salami slicing, also known as penny shaving , is the fraud ulent practice of stealing money repeatedly in extremely small quantities, usually by taking advantage of rounding to the nearest cent or other monetary unit in financial transactions. It would be done by always rounding down, and putting the fractions of a cent into another account. The idea is to make the change small enough that any single transaction will go undetected. ref cite web url http cybercrime.planetindia.net frequently used.htm title Frequently Used Cyber Crimes ref ref cite web url http all.net CID Attack papers Salami2.html title Salami Attacks ref In information security , a salami attack is a series of minor attacks that together results in a larger attack. Computers are ideally suited to automating this type of attack. In politics, the term salami tactics has been used since the 1940s to refer to a divide and conquer process of threats and alliances used to overcome opposition. In academia, salami slicing refers to the practice of creating several publications out of material that could have been published in a single journal or review. See also least publishable unit . Salami slicing attacks In 2008 a man was arrested for fraudulently creating 58,000 accounts which ... may be considered a form of salami slicing. The edges of coin s made of precious metals have been ... date September 2009 Film and television Salami slicing has played a key role in the plots of several ... 2nd GIG , terrorist Hideo Kuze uses salami slicing in order to finance his actions, eventually stealing ... of salami slicing also appears in a volume of Harry Harrison s Stainless Steel Rat series. The revolutionary ... Heading15 How computers enable salami slicing to occur http www.networkworld.com newsletters sec 2002 ...   more details



  1. Slow slicing

    capital punishment Slow slicing zh s linktext t linktext p linktext l ng ch , alternately transliterated Ling Chi or Leng T che , also translated as the slow process , the lingering death , or death by a thousand cuts zh s linktext t linktext , was a form of execution used in China from roughly 900 AD until its abolition in 1905. In this form of execution, the condemned person was killed by using a knife to methodically remove portions of the body over an extended period of time. The term l ngch derives from a classical description of ascending a mountain slowly. Lingchi was reserved for crimes viewed as especially severe, such as treason and killing one s parents. The process ... in China by slow slicing. Lingchi could be used for the torture and execution of a living person ... as Chinese medicine. ref . , vol.15 ref As an official punishment, death by slicing may ... by slicing, wrote that Ling Chi was commonly, and quite wrongly, translated as death by slicing ..., 1901 to 2000 2000 , writes the traditional punishment of death by slicing ... became part ... that slicing was ordered, in fact, for K ang Yu Wei , a man termed the Jean Jacques Rousseau Rousseau ... and that It was announced that Father Wong was to be publicly executed by the slicing process. George .... Scott also calls the it the slicing process and differentiates between the different types of execution ... no indication of whether the slicing was done post mortem. Scott claims it was common for the relatives of the condemned to bribe the executioner to kill the condemned before the slicing procedure ... in the Conqueror accords with the more sensationalistic depictions of Slow Slicing described ... the punishment of slow slicing. In the manga Deadman Wonderland , the undertaker Daida ... uses a version of slow slicing in his book Broken Angels when a traitor is executed publicly and slowly ... 2010 DEFAULTSORT Slow Slicing Category Capital punishment in China Category Execution methods Category ...   more details



  1. File:Slicing the Bread.jpg

    Information Description Slicing the Bread Source http www.hung art.hu frames e.html? english r reti muvek index.html Date 1906 Author Istv n R ti Permission other versions PD USonly expiry 17 January 2015 ...   more details



  1. Slicing (interface design)

    In fields employing interface design skills, slicing is the process of dividing a single 2D computer graphics 2D user interface composition visual arts composition page layout layout Comprehensive layout comp into multiple image files digital asset s of the graphical user interface GUI for one or more electronic page s. It is typically part of the client side development process of creating a web page and or web site , but is also used in the user interface design process of software development and game development . The process involves partitioning a comp in either a single layer image file format or the multi layer native file format of the graphic art software used for partitioning. Once partitioned, one would save them as separate image files, typically in GIF , JPEG or Portable Network Graphics PNG format in either a batch processing batch process or one at a time. Multi layered image files may include multiple versions or states of the same image, often used for animation s or widget computing widgets . Practical Usage Slicing is used in many cases where a graphic design layout must be implemented as a interactive media content. Therefore, this is a very important skill set typically possessed by front end developers that is interactive media developers who specialize in user interface development. Slices may be produced and used in several different ways. Before tableless ... coding accurately. Slicing is exclusively used for Raster graphics bitmap image s. Vector graphics ... or PDF files. Benefits Slicing reduces work loads and computer data storage space requirements to needing ... without changing the background. On the web, slicing breaks up one large image into many smaller ... methods of slicing can be used to further compress the amount of data needed to download to the user ... across modern web browsers. Alternatives Slicing is mainly used for 2D computer graphics with single ... Image editing Graphic image development DEFAULTSORT Slicing Web Design External links http www.alistapart.com ...   more details



  1. Array programming

    accessdate 2011 03 19 ref See also Array slicing References reflist External links http www.nsl.com ...Programming paradigms In computer science , array programming languages also known as vector or multidimensional ... geometric vector s, matrix mathematics matrices , and higher dimensional arrays. Array programming ... be dramatic in certain cases it is not uncommon to find array programming language one liner program ... programming language to provide array programming capabilities. The mnemonic APL refers to the title .... Concepts The fundamental idea behind array programming is that operations apply at once to an entire ... behind array programming actually referring to APL as follows quote most programming languages are decidedly ... derive more efficient algorithm. The basis behind array programming and thinking is to find and exploit ... , array orientation looks to group data and apply a uniform handling. Function rank is an important concept to array programming languages in general, by analogy to tensor rank in mathematics functions ... the dimensionality of an input data array by one or more dimensions. For example, summing over elements collapses the input array by 1 dimension. Uses Array programming is very well suited to implicit ... set MMX and continuing through SSSE3 and 3DNow , which include rudimentary SIMD array capabilities. Array ... or more cores are increasingly common today. Languages The canonical examples of array programming ... Array programming languages provides an exhaustive list. Examples In scalar languages like Fortran ... a i j b i j source C source lang csharp class Program static void Main string args int numbers Array declaration Console.WriteLine Please enter the array size int n int.Parse Console.ReadLine Getting the Array size from user numbers new int n Array Creation for int i 0 i numbers.Length i Reading the Array ... This need to loop and index to perform operations on arrays is both tedious and error prone. In array ..., when the array language compiler interpreter encounters a statement like Array programming approach ...   more details



  1. Saturated array

    In experiments in which additional factors are not likely to interact with any of the other factors, a saturated array can be used. In a saturated matrix mathematics array , a controllable design of experiments factor is substituted for the interaction of two or more by products. Using a saturated array, a two factor test matrix could be used to test three factors. Using the saturated array allows three factors to be tested in four tests rather than in eight, as would be required by a standard orthogonality orthogonal array. statistics stub Category Design of experiments ...   more details



  1. ARRAY Magazine

    orphan date December 2008 For the DVD magazine, see Array DVD magazine Deleted image removed Image ARRAY magazine.jpg right 150px ARRAY Magazine is a New York based interior design, lifestyle and culture quarterly magazine sponsored by the New York Design Center . It has been published since the winter of 2003 2004. With 40,000 readers, ARRAY is geared toward interior design professionals and their clients. External links http www.arrayny.com ARRAY Homepage Category Interior design Category Quarterly magazines Category Media in New York City Category Publications established in 2003 Category Magazines published in New York art mag stub hu ARRAY Magazine ...   more details



  1. Control array

    multiple issues confusing January 2010 notability January 2010 unreferenced January 2010 orphan July 2010 wikify January 2011 Control Array mostly used in Visual Basic is the collection of controls that programmer put it in form VB Form . Control array is always a single dimensional array . Control array is that you can add or delete array elements at run time. With some controls, it is very useful to define control arrays it depends on the application. Control arrays are a convenient way to handle groups of controls that perform a similar function. All of the events available to the single control are still available to the array of controls, the only difference being an argument indicating the index of the selected array element is passed to the event. Hence, instead of writing individual procedures for each control i.e. not using control arrays , you only have to write one procedure for each array. Category BASIC programming language family ...   more details



  1. Antenna array

    File Aerial antenna.JPG thumb right 250px A multiband US television reception antenna Antenna array may refer to an Interferometry interferometric array of radio telescope s used in radio astronomy a phased array , also known as a smart antenna , an electronically steerable directional antenna typically used in Radar and in wireless communication systems, in view to achieve beamforming , multiple input and multiple output MIMO communication or space time coding See below An antenna array is a group of isotropic radiators such that the currents running through them are of different amplitudes and phases. ref name antenna array These are radiators of EM frequency and energy. Antenna arrays are the solution to the problem defined as the limitations of operating a single antenna. ref name antenna array An example of the problem is that although a dipole antenna allows for better control of direction ... radiators. ref name antenna array There are a few different general types of antenna arrays. When the array is arranged in a straight line this is called a linear array . ref name antenna array Antennas arranged in parallel lines on one plane has a plane array in two dimensions. ref name antenna array Many planes in a group of arrays or antennas results in a three dimensional array . An antenna array may consist of a group of isotropic omni directional radiators. Or, the array may have a group of radiators that are identical. ref name antenna array In a group of identical radiators all the antennas must be share the same orientation in space. ref name antenna array The same orientation results ... orientation ensures polarization in the same direction in space. ref name antenna array cite book ...&pg PA396&dq antenna array v onepage&q antenna 20array&f false isbn 8122404685 ref The gain of an antenna array is typically proportional to the number of individual antennas, but is limited to how accurately they can be phased together for example in a phased array . The loss due to phase ...   more details



  1. Array gain

    In MIMO communication systems, array gain means a power gain of transmitted signals that is achieved by using multiple antennas at transmitter and or receiver, with respect to Single Input and Single Output SISO case. It can be simply called power gain . In a broadside array, the array gain is almost exactly proportional to the length of the array. This is the almost always the case provided that the elements of the antenna are not spaced to a point at which large radiation side lobs form in other directions and that the array length exceeds one or two wavlenegths. ref http www.smeter.net daily facts 12 fact5.php ref References reflist See also Diversity gain Category Antennas radio electronics stub ...   more details



  1. Array processing

    Array processing is signal processing of the outputs of an array of sensor s to Enhance the signal to interference plus noise ratio SINR compared to that of a single sensor using conventional or adaptive beamforming . Determine the number of emitting sources, the locations of these sources, their waveforms , and other signal parameters. Track multiple moving sources. Array processing is used in radar , sonar , seismic exploration, anti jamming and wireless communications. One of the main advantages of using array processing along with an array of sensors is a smaller foot print. The problems associated with array processing include the number of sources used, their direction of arrival direction of arrivals , and their signal waveforms . ref Torlak, M. http users.ece.utexas.edu bevans courses ee381k lectures 13 Array Processing lecture13 lecture13.pdf Spatial Array Processing . Signal and Image Processing Seminar. University of Texas at Austin. ref See also Phased Array Space Time Adaptive Processing References reflist cite book title Array Signal Processing last1 Johnson first1 D. H. last2 Dudgeon first2 D. E. year 1993 publisher Prentice Hall cite book first1 H. L. last1 Van Trees title Optimum Array Processing publisher Wiley location New York year 2002 cite journal first1 H. last1 Krim first2 M. last2 Viberg url http www.vissta.ncsu.edu publications ahk spm1996.pdf title Two Decades of Array Signal Processing Research journal IEEE Signal Processing Magazine pages 67 94 month July year 1996 accessdate 8 December 2010 S. Haykin and K.J.R. Liu Editors , Handbook on Array Processing and Sensor Networks , Adaptive and Learning Systems for Signal Processing, Communications, and Control Series, 2010. E. Tuncer and B. Friedlander Editors , Classical and Modern Direction of Arrival Estimation , Academic Press, 2010. A.B. Gershman, http www.nts.tu darmstadt.de nt fileadmin nas lehre SS 08 PS Smart Antennas slides proj sem.pdf array processing courseware DEFAULTSORT Array Processing ...   more details



  1. Sensor array

    Unreferenced stub auto yes date December 2009 A sensor array is a set of several sensors used to gather information. Usually the sensors and sensed phenomenon are both directional in nature, but this isn t always the case. Sometimes the data varies by position but not by direction. DEFAULTSORT Sensor Array Category Sensors Electronics stub ...   more details



  1. Sparse array

    In computer science , a sparse array is an Array data structure array in which most of the elements have the same value known as the default value usually 0 or nullable type null . A naive implementation of an array may allocate space for the entire array, but in the case where there are few non default values, this implementation is inefficient. Typically the algorithm used instead of an ordinary array is determined by other known features or statistical features of the array, for instance if the sparsity is known in advance, or if the elements are arranged according to some function e.g. occur in blocks . As an example, a spreadsheet containing 100 100 mostly empty cells might be more efficiently stored as a linked list rather than an array containing ten thousand array elements. A heap malloc memory allocator inside a program might choose to store regions of blank space inside a linked list rather than storing all of the allocated regions in, say a bit array . so what? blank space is not an indexed array sparse or not , indeed See also Sparse matrix External links http boost.org libs numeric ublas doc vector sparse.htm Boost sparse vector class http portal.acm.org citation.cfm?id 1363086&jmp cit&coll GUIDE&dl GUIDE Rodolphe Buda, Two Dimensional Aggregation Procedure An Alternative to the Matrix Algebraic Algorithm , Computational Economics , 31 4 , May, pp.397 408, 2008. Category Arrays datastructure stub ru ...   more details




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