wiktionary cluster A cluster is a small group or bunch of something. In science Cluster physics , a small group of atoms or molecules Cluster chemistry , an array of bound atoms intermediate in character between a molecule and a solid Cluster sampling , a sampling technique used when natural groupings are evident in a statistical population Cluster analysis , a technique for statistical data analysis Consonant cluster , in linguistics In astrophysics Star cluster , referring to both open and globular clusters Open cluster , a spherical collection of stars that orbits a galaxy in the galactic plane Globular cluster , a spherical collection of stars whose orbit is either partially or completely ..., composed of many galaxy clusters Cluster mission , a European Space Agency mission to study the magnetosphere In biology and health sciences Cancer cluster , in biomedicine, an occurrence of a greater than expected number of cancer cases Cluster headache , a neurological disease that involves an immense degree of pain Cluster of differentiation , protocol used for the identification and investigation of cell surface molecules present on white blood cells. Winter cluster , in beekeeping, a well defined cluster of honey bees in cold temperatures Cluster epidemiology , a grouping of cases of disease Genetic cluster , a group of genes or proteins, or metabolites whose expression or concentration is similar across a range of conditions In computing Cluster computing , a group of loosely coupled computers that work together closely Data cluster , a group of disk sectors used in a File Allocation Table In music Tone cluster , a musical chord comprising at least three consecutive tones in a scale Cluster band , a German rock band Cluster Italian musical group , an a cappella jazz fusion group from Genoa, Italy Cluster album Cluster album , the 1971 eponymous album by the band ClusterCluster , a track from the album Ben Bu Sarkiyi Sana Yazdim by Cem Adrian Cluster One , the first track ... more details
Cluster II may refer to Cluster II spacecraft , a European Space Agency mission Cluster II album , an album by German electronic music group Cluster disambig ... more details
Notability date September 2010 Unreferenced auto yes date December 2009 Cluster lizards are a fictional species of carnivorous reptile on the science fiction series Lexx . These lizards exist on The Cluster in the Light Zone , where they are sometimes used as a means of capital punishment. They often roll themselves into a tire shape when moving, and somewhat resemble large armored centipedes . They are especially fond of eating brain flesh. A female Cluster lizard experiences a form of oestrus once every seven years. At the end of the cycle, she eats her mate. In the series, the character Zev Bellringer Zev , later Xev, becomes half Cluster lizard when she is condemned to be transmogrified into a love slave a rogue Cluster lizard interrupts the process and their DNA is combined. Not only can she roll up and scream like a Cluster lizard, but the lizard DNA gives her the capacity to deal with extended desert conditions. Additionally, Cluster lizards respond to her as they would other Cluster lizards. Lexx Category Lexx Category Fictional lizards Scifi stub ... more details
Ndb Cluster is the distributed database system underlying MySQL Cluster . It can be used independently of a MySQL Server. From the MySQL Server perspective the Ndb Cluster is a Database engine Storage engine for storing tables of rows. From the Ndb Cluster perspective, a MySQL Server instance is an API process connected to the Cluster. Ndb Cluster can concurrently support access from other types of API processes. All API processes can operate on the same tables and data stored in the Ndb Cluster. Standalone Ndb Cluster Ndb Cluster has the following capabilities independent of any attached MySQL Server Persistent, distributed storage of tables with unique or ordered indexes Redo logging, checkpointing, system recovery Primary key, unique key, table scan and ordered index scan Parallel scan execution with pushed down filters Row locks, transactional updates Synchronous data replication within the cluster, automatic failover recovery Automatic connection failover for API processes Standard SQL datatypes including Blobs etc. Storage of data on disk Asynchronous data change triggers mechanism ... Online backup Online upgrade MySQL Cluster Ndb Cluster MySQL Server s MySQL Cluster currently uses the MySQL Server to provide the following capabilities on top of Ndb Cluster SQL parsing optimising ... Ndb Cluster is often configured as a MySQL Cluster An Ndb Cluster with attached MySQL Server processes ... Server use the NDBAPI ref name NdbApiDocs http dev.mysql.com doc ndbapi en index.html The MySQL Cluster API Developer Guide ref C client library to connect to the Ndb Cluster and perform operations. It is currently recommended that at least one MySQL Server is connected to an Ndb Cluster to perform Data Definition Language DDL operations. Limitations Ndb cluster introduces certain limitations ref http dev.mysql.com doc refman 5.5 en mysql cluster limitations.html Known Limitations of MySQL Cluster ... migration to NDB Cluster need to plan for these limitations Does not support prefix indexes only entire ... more details
Infobox album See Wikipedia WikiProject Albums Name Apropos Cluster Type studio Artist Dieter Moebius Moebius and Hans Joachim Roedelius Roedelius Cover Apropos cluster.jpg Released 1991 Recorded 1989 1990 Genre Krautrock br Experimental Music br Electronic music br Ambient Music Length Label Curious Music Producer Chronology Cluster band Cluster Last album Curiosum br 1981 This album Apropos Cluster br 1991 Next album One Hour br 1995 Apropos Cluster is a full length studio album by Dieter Moebius and Hans Joachim Roedelius also known as German electronic music outfit Cluster band Cluster . It was also their first album after an eight year long hiatus. In 1989 Dieter Moebius and Hans Joachim Roedelius reunited to the delight of their fans, recording Apropos Cluster during 1989 and 1990 in Blumau , Austria . The album was released on the Curious Music label in 1991. It was Cluster s first U.S. release. Apropos Cluster is musically and structurally similar to Grosses Wasser though it lacked the rhythmic tracks of the 1979 release, instead comprising a mixture of gentle, ambient pieces in the four shorter tracks followed by the nearly 22 minute long, more experimental title piece. Emmental became the signature track for Cluster. It was included on the 1997 live album First Encounter Tour 1996 and was often performed live by Roedelius at solo concerts during the band s second hiatus. Apropos Cluster was reissued on the Swirldisc Records label on August 23, 1996. Track listing Grenzganger 7 24 Emmental 3 24 Gespiegelt 6 58 Falls 2 57 Apropos Cluster 21 41 Personnel Hans Joachim Roedelius Dieter Moebius Stanislaw Michalik bass on Emmental References Curry, Russ http www.thing.de delektro www eng cluhist.html A Curious History of Cluster Retrieved August 17, 2007. Discogs http www.discogs.com release 232071 Retrieved August 19, 2007. Category 1991 albums Category Cluster albums 1990s electronic album stub ... more details
Image Earth Widening Vault.jpg thumb right Widening of the Earth s Vault oil on canvas, 3 X 4.25 meters 10 X 14 feet , 1987 The Cluster Paintings are a Serial imagery series of painting s created by Nabil Kanso in 1986 1988. They are characterized by Composition visual arts composition s that divide the canvas space into sections reflecting a cluster of irregular shaped Plane geometry planes offering variations of contrasts and viewpoints. These characteristics expanded in later works such as the America 500 Years America and Living Memory paintings Living Memories series. ref The Cluster Paintings Cluster Matter Floating in Spaces of Shades , pp. 82 102 in Nabil Kanso the Split of Life Paintings, NEV Editions, Atlanta 1996. ref ref http kansoamerica.com text.html Notes on the Cluster paintings ref See also The Floating Shadows triptych References references External links http nabilkanso.com CLUSTER.html The Cluster paintings Painting stub DEFAULTSORT Cluster Paintings Category Modern paintings Category War art Category Painting series Category 1980s paintings ... more details
A Cluster diagram or clustering diagram is a general type of diagram , which represents some kind of cluster. A cluster in general is a group or bunch of several discrete items that are close to each other. ref Lemma http en.wiktionary.org wiki clustercluster at Wiktionary . Retrieved Sept 18, 2008. ref The cluster diagram figures a cluster, such as a network diagram figures a computer network network ... arranged kind of cluster diagram. A cluster diagram is a Mesh networking mesh kind of network diagram ... diagram a Tree and hypertree networks tree type of network diagram. Types of cluster diagrams Specific types of cluster diagrams are br Gallery Image Skyscrapercompare.svg Comparison diagram of sky scraper Image M3 color magnitude diagram it.jpg Astronomic cluster diagram of the Messier 3 globular cluster Image Biositemap iTools NCBC.png Biositemap diagram Image EvaporacaoDeNuvem.png Cluster chart in brainstorming Gallery br In architecture a comparison diagram is sometimes called a cluster ... Cluster Diagram at skyscrapernews.com. Retrieved 18 september 2008. Comment This illustration depicts a comparison diagram , but yet is called a cluster diagram . ref In astronomy diagrams of star cluster , galaxy groups and clusters or globular cluster . In brainstorming a cluster diagrams is also ... www.enchantedlearning.com graphicorganizers cloud Cluster Cloud Diagrams at enchantedlearning.com. 2003 2009. Accessed Nov 17, 2009. ref Also, the term cluster diagrams is sometimes used as synonym of mind map s . ref http www.brainstorming that works.com cluster diagrams.html Cluster diagrams are another ... Image IEEE 802.15.4 cluster tree.png Computer network diagram Image WorldWideWebAroundWikipedia.png ... , file system s and internet can be considered cluster diagrams. In information visualization specific ... in the shape of a cluster diagram. In quantum field theory for example, according to Crawford 1998 , the called coupled cluster diagram is a simple diagrammatic formalism popularized by Kucharski and Bartlett ... more details
orphan date August 2009 CLUSTER, abbreviation of Collaboration for Leadership in Urban Science Teaching, Evaluation, and Research. It is a collaboration among the City College of New York CCNY , the New York Hall of Science NYHoS and the Center for Advanced Study in Education at the City University of New York CUNY . The fellowship is supported by the National Science Foundation ref http www.sci.ccny.cuny.edu rstein Cluster cluster.html Professor Richard N. Steinberg s Introduction on CLUSTER Fellowship ref . The CLUSTER fellowship is opened to undergraduate science degree seeking students who have a strong desire for teaching and learning. Prospective fellows should consult their advisers in their majors before applying as the fellowship is coursework and time demanding. References reflist External links http cluster.qiji.us Discussion Forum for CLUSTER Fellows. Category Science education ... more details
Image Tunnel cluster intermed mag.jpg thumb right Micrograph of a tunnel cluster. H&E stain . A tunnel cluster , more formally tunnel cluster of the cervix and cervical tunnel cluster , is a benign group of dilated endocervical glands in the uterine cervix cervix . It is significant only in that it can be confused for a malignancy, i.e. cervical cancer cancer . ref name pmid12352183 Cite journal last1 Nucci first1 MR. title Symposium part III tumor like glandular lesions of the uterine cervix. journal Int J Gynecol Pathol volume 21 issue 4 pages 347 59 month Oct year 2002 doi PMID 12352183 ref See also Cervical cancer References Reflist 1 External links http surgpath4u.com caseviewer.php?case no 477 Tunnel clusters surgpath4u.com Category Pathology ... more details
Infobox Album See Wikipedia WikiProject Albums Name Cluster & Eno Type Album Artist Cluster band Cluster and Brian Eno Cover Cluster & Eno.jpg Released 1977 Recorded June 1977 Genre Ambient music Ambient Length 36 10 Label Sky Records Producer Conny Plank , Cluster band Cluster Chronology Cluster band Cluster Last album Sowiesoso br 1976 This album Cluster & Eno br 1977 Next album After the Heat br Eno, Moebius, Roedelius br 1978 Misc Extra chronology Artist Brian Eno Type album Last album Discreet Music br 1975 This album Cluster & Eno br 1977 Next album Before and after Science br 1977 Album ratings rev1 Allmusic rev1Score Rating 4 5 ref Allmusic class album id r105951 pure url yes ref rev2 ... Media rev3Score 8.7 10 ref http pitchfork.com reviews albums 11733 cluster eno after the heat begegnungen begegnungen ii Pitchfork Album Reviews Cluster & Eno Eno Moebius Roedelius Eno Moebius Roedelius Plank Cluster & Eno After the Heat Begegnungen Begegnungen II Bot generated title ref Cluster & Eno is a collaborative album by the Germany German electronic music group Cluster band Cluster ... of gentle melodies a mixture of Eno s ambient sensibilities and Cluster s avant garde style ... sessions at Conny Plank s studio. The first release from those sessions on Sky Records was Cluster ... on synthesizer. The association with Eno brought Cluster a much wider audience than previous ... blockquote Meshing Cluster s affinity for loops and repetition and Eno s penchant for processing ... and Asmus Tietchens. ref Reesman, Bryan http www.amazon.com Cluster Eno dp B0000035DD Cluster & Eno ref blockquote The United States American Gyroscope record label Gyroscope label reissued Cluster & Eno ... A Curious History Of Cluster . Retrieved August 17, 2007. Waynick, Michael Allmusic class album ... Eno albums Category Cluster albums Category 1977 albums Category Albums produced by Conny Plank Category Collaborative albums fr Cluster & Eno nn Cluster & Eno ... more details
Cluster sampling is a sampling statistics sampling technique used when natural but relatively homogeneous groupings are evident in a statistical population . It is often used in marketing research . In this technique ... of elements may be selected within each of these groups. A common motivation for cluster ... of the variation in the population is within the groups, not between them. Cluster elements Elements within a cluster should ideally be as heterogeneous as possible, but there should be homogeneity between cluster mean s. Each cluster should be a small scale representation of the total population ... cluster sampling, all the elements from each of the selected clusters are used. In two stage cluster .... The main difference between cluster sampling and stratified sampling is that in cluster sampling the cluster is treated as the sampling unit so analysis is done on a population of clusters at least ... sampling, a random sample is drawn from each of the strata, whereas in cluster sampling only the selected clusters are studied. The main objective of cluster sampling is to reduce costs by increasing ... clusters from clusters. Aspects of cluster sampling One version of cluster sampling is area sampling or geographical cluster sampling . Clusters consist of geographical areas. Because a geographically ... can be achieved by treating several respondents within a local area as a cluster. It is usually ... savings may make that feasible. In some situations, cluster analysis is only appropriate when ... of selecting any cluster varies with the size of the cluster, giving larger clusters a greater probability ... cluster so that each unit sampled has the same probability of selection. Cluster sampling is used ... design effect , the ratio between the number of subjects in the cluster study and the number of subjects ... cgi content full 316 7142 1455 Statistics notes The intracluster correlation coefficient in cluster ... Multistage sampling Simple random sampling References Reflist DEFAULTSORT Cluster Sampling Category ... more details
section. The distribution of these three components is approximately the same in the cluster ... components of a galaxy cluster. They are tabulated below class wikitable Name of the components Mass ... more details
Solaris Cluster sometimes Sun Cluster or SunCluster is a high availability cluster software product for the Solaris ... on a network, electronic commerce websites , or other applications. Sun Cluster operates by having redundant ... computer cluster.jpg thumb Sun Microsystems Solaris Cluster Background Solaris Cluster provides services that remain available even when individual nodes or components of the cluster fail. Solaris Cluster provides two types of HA services failover services and scalable services . To eliminate single points of failure, a Solaris Cluster configuration has redundant components, including multiple ... software such as Solaris Cluster is a key component in a Business Continuity solution, and the Solaris Cluster Geographic Edition was created specifically to address that requirement. Solaris Cluster ... code to Solaris Cluster via the OpenSolaris HA Clusters community. ref cite web url http www.networkworld.com news 2007 062707 sun to donate cluster code.html title Sun offers up Solaris clustering ... ref Solaris Cluster Geographic Edition SCGE is a management framework that was introduced in August 2005. It enables two Solaris Cluster installations to be managed as a unit, in conjunction with one ..., high availability , POSIX compliant filesystem internal to Solaris Cluster nodes. Global devices in Sun Cluster are made possible by PxFS. ref cite web url https blogs.oracle.com SC entry ... 2008 07 15 publisher Sun Microsystems date 2008 07 11 ref Supported applications Solaris Cluster ... others there is also a wizard software wizard which allows the cluster implementer to create agents for other applications. See also Computer cluster SunPlex Manager , GUI used to view the status and administer some aspects of Solaris Cluster References Reflist External links http www.oracle.com us products servers storage solaris cluster 067314.html Solaris Cluster webpage at Oracle http www.opensolaris.org ... attachments 24543510 820 4690.pdf Sun BluePrint Using Solaris Cluster and Sun Cluster Geographic Edition ... more details
A Cluster manager usually is a backend GUI or command line software that runs on one or all cluster nodes in some cases it runs on a different server or cluster of management servers. The cluster manager works together with a cluster management agent. These agents run on each node of the cluster to manage and configure services, a set of services, or to manage and configure the complete Cluster computing cluster server itself see super computing . In some cases the cluster manager is mostly used to dispatch work for the cluster or cloud computing cloud to perform. In this last case a subset of the cluster ... to send work and get back work results from a cluster. In other cases the cluster is more related to high ... surealived.sf.net Some Proprietary solutions http www.hp.com go cmu Insight Cluster Management Utility CMU , from http www.hp.com HP Microsoft Cluster Server Cluster Server , from Microsoft http www.brightcomputing.com Bright Cluster Manager.php Bright Cluster Manager , from http www.brightcomputing.com ... Tivoli System Automation for Multiplatforms , from IBM See also Grid network Hypercube Cluster Management ... Institutional Grids Springer Journal Cluster Computing Volume 5, Number 3 July, 2002 http www.zib.de ... Cluster Computing, 2003. Proceedings. 2003 IEEE International Conference on http www.cs.cornell.edu ... Cluster Computing IEEE International Conference on Cluster Computing Cluster 00 , 2000. http punch.purdue.edu ... Cluster Management Systems within a Wide Area Network Computing Environment ACM IEEE Supercomputing ... Cluster Computing Autonomic Computing, 2006. ICAC 06. IEEE International Conference on. http portal.acm.org ... site.pdf Job Site Level Fault Tolerance for Cluster and Grid environments IEEE International Conference on Cluster Computing Cluster 2005 http www.lri.fr Rapports internes 2005 RR1420.pdf Fault Injection ... Survey of Commercial Cluster Batch Schedulers Category Parallel computing Category Telecommunications Category Cluster computing de Cluster Manager pt Gestor de cluster ... more details
Cluster development or cluster initiative or Economic Clustering is the economic development of business cluster s. The cluster concept has rapidly attracted attention from governments, consultants , and academics since it was first proposed in 1990 by Michael Porter . Many governments and industry organizations across the globe have turned to this concept in recent years as a means to stimulate urban and regional economic growth. As a result, a large number of cluster initiative organizations were started during the 1990s, and the trend continues. The first comprehensive study of cluster initiatives around the world was reported in the Cluster Initiative Greenbook published by rjan S lvell , Christian Ketels and G ran Lindqvist , with a foreword by Michael Porter . The report was presented ... in 2005 covered more than 1400 cluster initiative organizations across the globe. While the purpose of cluster initiative organizations is to promote economic development within the cluster by improving ... one business sector, e.g., biotech, steel. More specifically, cluster initiatives are organizations ... may be one of the cluster initiative s activities, cluster initiatives generally are involved ... projects, marketing of the region, and setting technical standards. In June 2007, the European Cluster ..., cluster initiatives, and cluster policy throughout 32 European countries. See also Innovation system ..., & Ketels, C, http www.cluster research.org greenbook.htm The Cluster Initiative Greenbook , 2003. Teigland ... Cluster and its Cluster Initiative? European Planning Studies , Forthcoming. Teigland, R, Hallencreutz ... http www.clusterobservatory.eu The European Cluster Observatory http www.unido.org fileadmin user ... 20198994 menuPK 404396 pagePK 148956 piPK 216618 theSitePK 341139,00.html Sector and Business Cluster Development, The World Bank http www.isc.hbs.edu econ clusters.htm Clusters and Cluster Development ... cdp.html UNIDO Cluster Development in Pakistan Village Earth Village Earth Cluster Development Approach ... more details
Refimprove date December 2006 A GPU cluster is a computer cluster in which each node is equipped with a Graphics Processing Unit GPU . By harnessing the computational power of modern GPUs via General Purpose Computing on Graphics Processing Units GPGPU , very fast calculations can be performed with a GPU cluster. Hardware GPU The hardware classification of GPU clusters fall into two categories Heterogeneous and Homogeneous. Heterogeneous Hardware from both of the major Independent hardware vendor IHV s can be used ATi and nVidia . Even if different models of the same GPU are used e.g. 8800GT mixed with 8800GTX the gpu cluster is considered heterogeneous. Homogeneous Every single GPU is of the same hardware class, make, and model. i.e. a homogeneous cluster comprising 100 8800GTs, all with the same amount of VRAM Classifying a GPU cluster according to the above semantics largely directs software development on the cluster, as different GPUs have different capabilities that can be utilized. Hardware Other Interconnect In addition to the computer nodes and their respective GPUs, a fast enough ... of building and delivering a fully configured GPU cluster using the NVIDIA Tesla 20 series ... cluster node. Clustering API such as the Message Passing Interface , MPI . Virtual OpenCL VCL cluster platform http www.MOSIX.org txt vcl.html . Algorithm mapping Mapping an algorithm to run a GPU cluster is somewhat similar to mapping an algorithm to run on a traditional computer cluster . Example ... of the GPU cluster. References and external links cite book author Are Magnus Bruaset, Aslak Tveito ... year 2006 isbn 3 540 29076 1 http www.iacat.uiuc.edu resources cluster NCSA s Accelerator Cluster ... http www.cse.scitech.ac.uk disco cseht cseht.shtml GPU cluster at STFC Daresbury Laboratory http www.gputemp.com GPU Cores Temperature Monitoring Reflist Category Cluster computing Category Graphics hardware nl GPU cluster ... more details
Infobox Cluster name Arches Cluster image Image ESO Arches Cluster.jpg Arches cluster 250px caption Arches Cluster of young, massive stars. This image was obtained with NACO adaptive optics system on ESO s Very Large Telescope . credit epoch J2000 constellation Sagittarius constellation Sagittarius ra RA 17 45 50.5 dec DEC &ndash 28 49 28 dist ly 25 kly dist pc 8.5 kpc notes Optically obscured names The Arches Cluster is the densest known star cluster in the Milky Way, and is located about 100 light years away from the center of our Milky Way galaxy , in the constellation Sagittarius constellation Sagittarius . Due to extremely heavy optical extinction astronomy extinction by dust in this region, the cluster is obscured in the visual bands, and is observed in the X ray astronomy X ray , Infrared astronomy infrared , and radio astronomy radio bands. The radius of the cluster is approximately one light year . It contains about 150 young, very hot stars that are many times larger and more massive than our Sun. ref cite news title Espinoza et al. The massive star initial mass function of the Arches cluster publisher Astronomy and Astrophysic year 2009 doi 10.1051 0004 6361 20078597 accessdate 0 ref Such stars live for only a few million years before exhausting their hydrogen fuel, due to their extreme luminosity . The cluster also contains hot gas, produced in shock wave shock s by collisions among the massive, high velocity stellar wind s flowing outwards from the stars. This star cluster and the Quintuplet cluster , another massive young cluster in the region, are estimated to be two ... Space Telescope to observe about a thousand stars in the Arches cluster and found no stars over ... thumb alt Arches Cluster. False color IR image of the Arches Cluster. References reflist External links http www.eso.org public images eso0921a The Arches Cluster ESO Image Gallery http hubblesite.org ... de Arches Sternhaufen fa ko it Ammasso Arches nl Arches cluster no Archeshopen ... more details
In quantum information and quantum computing , a cluster state is a type of highly entangled state of multiple qubit s. Cluster states are generated in lattices of qubits with Ising type interactions. A cluster C is a connected subset of a d dimensional lattice, and a cluster state is a pure state of the qubits located on C . They are different from other types of entangled states such as GHZ state s or W state s because it is more difficult to eliminate quantum entanglement via projective measurement s in the case of cluster states. Another way of thinking of cluster states is as a particular instance of graph state s, where the underlying graph is a connected subset of a d dimensional lattice group lattice .Cluster states are especially useful in the context of the one way quantum computer . Formally a cluster state is a state which obeys the set eigenvalue equations math K G a left G right rangle 1 k a left G right rangle math where math K G a sigma x a otimes b in nghb a sigma z b . math See also Bell state Graph state References cite journal author H. J. Briegel and R. Raussendorf authorlink title Persistent Entanglement in arrays of Interacting Particles journal Physical Review Letters year 2001 volume 86 page 910 doi 10.1103 PhysRevLett.86.910 pmid 11177971 issue 5 bibcode 2001PhRvL..86..910B pages 910 3 Quantum computing Category Quantum information science ... more details
The Coronet cluster is a small open cluster located about 420 light years away in the southern constellation Corona Australis . ref name apod http apod.nasa.gov apod ap070921.html ref References Reflist Category Open clusters Category Corona Australis Category NGC objects pl Gromada Coronet ... more details
Cluster name Snowflake Cluster image epoch J2000.0 class open cluster constellation Monoceros ra dec dist ly 2.4 lightyear kly dist pc appmag v size v mass kg mass msol radius ly v hb age notes names NGC 2264 The Snowflake Cluster is a cluster in Monoceros and is included in NGC 2264 . Name The star s appear to have formed in regularly spaced intervals along linear structures in a configuration that resembles the spokes of a wheel or the pattern of a snowflake . Hence, astronomers have nicknamed their new discovery the Snowflake Cluster. Information Scientists believe that these are very young protostar s, or newborn stars. At a mere 100,000 years old, these infant structures have yet to crawl away from their location of birth. Over time, the natural drifting motions of each star will break this order, and the snowflake design will be no more. The Spitzer Space Telescope Spitzer observations show that just as theory predicts, the density and temperature of the initial star forming cloud dictates the spacing between the protostars. External links http www.spitzer.caltech.edu Media happenings 20051222 index.shtml Spitzer Spots Stellar Snowflake on the Christmas Tree Cluster http www.physorg.com news9311.html Spitzer Unveils Infant Stars in the Christmas Tree Cluster http www.spitzer.caltech.edu Media mediaimages sig sig05 028.shtml Stellar Snowflake Cluster http tomsastroblog.com ?p 530 The Christmas Tree Cluster NGC2264 star cluster stub Category Monoceros constellation Category Open clusters tr Kar tanesi y ld z k mesi zh ... more details
logically contiguous. The term cluster was changed to allocation unit in DOS 4.0. However the term cluster is still widely used. ref Mueller, Scott 2002 . Upgrading and repairing PCs , p. 1354 ... File system management bg cs Cluster pevn disk de Cluster Datentr ger es Cl ster sistema de archivos fr Bloc disque dur id Cluster sistem berkas hu Helyfoglal si egys g mk nl Cluster bestandssysteem ja mhr pl Klaster dyskowy pt Unidade de aloca o ... more details
Galaxy cluster name Virgo Cluster image Image Virgngc.jpg 250 px epoch J2000 ra RA 12 27 ref name ned cite web title NASA IPAC Extragalactic Database work Results for Virgo Cluster url http nedwww.ipac.caltech.edu ... Cluster is a galaxy clustercluster of galaxies whose center is 1 E22 m 53.8 0.3 light year Mly 16.5 ..., Davi title The ACS Virgo Cluster Survey. XIII. SBF Distance Catalog and the Three dimensional Structure of the Virgo Cluster journal The Astrophysical Journal year 2007 volume 655 issue 1 pages 144 162 ..., ref See http astronomy.swin.edu.au cosmos V Virgo Cluster Virgo Cluster . ref the cluster forms the heart ... that its mass is 1.2 e 15 solar mass M sub sub out to 8 degrees of the cluster s center or a radius ..., T. Balkowski, C. title Structure, mass and distance of the Virgo cluster from a Tolman Bondi model .....770F doi 10.1051 0004 6361 20010833 arxiv astro ph 0106261 ref Many of the brighter galaxies in this cluster ... pointed to me by Mr. M chain. see http www.seds.org messier Mdes dm091.html M91 . ref The cluster ... galaxies of the cluster are visible with a small telescope. The cluster is a fairly heterogeneous ... Cluster Survey journal The Astrophysical Journal volume 153 issue 1 pages 223 242 origyear year ... , it is believed that the spirals of the cluster are distributed in an oblong prolate spheroid prolate ... distribution of spiral galaxies in the Virgo Cluster from the Tully Fisher relation journal Astrophysical ... The elliptical galaxies are more centrally concentrated than the spiral galaxies. The cluster is an aggregrate ... level5 Binggeli frames.html The Virgo Super Cluster home of M87 with frames ref The large mass of the cluster is indicated by the high peculiar velocity peculiar velocities of many of its galaxies, sometimes as high as 1,600 kilometre km second s with respect to the cluster s center. The Virgo cluster lies within the Virgo Supercluster , and its gravitational effects slow down the nearby galaxies. The large mass of the cluster has the effect of slowing down the recession of the Local Group ... more details
refimprove date February 2008 Infobox software name MySQL Cluster title logo Image MySQL.svg 180px logo ... br http dev.mysql.com dev.mysql.com MySQL Cluster is a technology which provides Shared nothing architecture ... January 2011 MySQL Cluster is implemented through an additional storage engine available within MySQL called Ndb Cluster NDB or Ndb Cluster NDBCLUSTER NDB stands for N etwork D ata b ase . Architecture MySQL Cluster has a few important concepts behind its design, which add both benefits and burdens. Replication MySQL Cluster uses synchronous replication through a two phase commit mechanism in order ... however, the cluster can be configured to store between one and four copies at any single time. Starting ... referred to as MySQL Cluster Replication or geographical replication . See http dev.mysql.com doc refman 5.1 en mysql cluster replication.html MySQL Cluster Replication . Horizontal data partitioning ... release, users can define their own partitioning schemes. Hybrid Storage MySQL Cluster allows .... MySQL Cluster maintains all Index database indexed columns in distributed memory. Non indexed ... page cache . Storing non indexed columns on disk allows MySQL Cluster to store datasets larger than the aggregate memory of the clustered machines. MySQL Cluster writes Redo log Redo logs to disk for all data changes as well as check pointing data to disk regularly. This allows the cluster to consistently recover from disk after a full cluster outage. As the Redo logs are written Asynchronous ... can be lost if the full cluster fails. The current default asynchronous write delay is 2 seconds ... to the synchronous data replication within the cluster. When a MySQL Cluster table is maintained in memory, the cluster will only access disk storage to write Redo records and checkpoints. As these writes are sequential and limited random access patterns are involved, MySQL Cluster can achieve higher ... RDBMS. Shared nothing MySQL Cluster is designed to have no single point of failure . Provided that the cluster ... more details
notability date November 2011 Infobox Journal cover File Cluster Computing.jpg discipline Computer clustering abbreviation publisher Baltzer Science Publishers country United States USA frequency history 1998 to present Citation needed date February 2007 openaccess website http www.ece.arizona.edu hpdc cluster ISSN 1386 7857 Cluster Computing the Journal of Networks, Software Tools and Applications is a journal for parallel processing , distributed computing systems, and computer communication networks. Category Computer science journals Category Cluster computing Category Publications established in 1998 Category English language journals Category Springer academic journals Category Quarterly journals journal stub ... more details
A cluster refers to a grouping of health related events that are related temporally and in proximity. ref http www.atsdr.cdc.gov HEC CSEM cluster definition.html Definition of Clusters , Case Studies in Environmental Medicine CSEM , Agency for Toxic Substances and Disease Registry , U.S. Department of Health and Human Services ref Typically, when clusters are recognized, they are reported to public health departments in the local area. The 1854 Broad Street cholera outbreak 1854 cholera outbreak which occurred in London is a classical example of a cluster. If clusters are of sufficient size and importance, they may be re evaluated as outbreak s. See also Cancer cluster Outbreak Public Health Epidemiology Cuzick Edwards test References references Category Epidemiology health stub infectious disease stub ... more details
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