• earthquakes
  • Using a non-hierarchical clustering algorithm and multidimensional scaling, we explore the multitudinous earthquakes by real-time 3-D visualization and inspection of multivariate clusters. (mexmat.ru)
  • Earthquake prediction is a branch of the science of seismology concerned with the specification of the time, location, and magnitude of future earthquakes within stated limits, and particularly "the determination of parameters for the next strong earthquake to occur in a region. (wikipedia.org)
  • While such statistics are not satisfactory for purposes of prediction (giving ten to twenty false alarms for each successful prediction) they will skew the results of any analysis that assumes that earthquakes occur randomly in time, for example, as realized from a Poisson process. (wikipedia.org)
  • 99..729K, doi:10.1029/93JB01556 Santoyo, M. A (2005), "Space-Time Clustering of Large Thrust Earthquakes along the Mexican Subduction Zone: An Evidence of Source Stress Interaction" (PDF), Bulletin of the Seismological Society of America, Seismological Society of America, 95 (5): 1856, Bibcode:2005BuSSA. (wikipedia.org)
  • pairs
  • Analysis of the type of links indicated that clusters consisted of pairs whose contact was by place of residence or work. (bmj.com)
  • A gene cluster is a group of two or more genes found within an organism's DNA that encode for similar polypeptides, or proteins, which collectively share a generalized function and are often located within a few thousand base pairs of each other. (wikipedia.org)
  • Find the most similar pair of clusters in the current clustering, say pair (r), (s), according to d[(r),(s)] = min d[(i),(j)] where the minimum is over all pairs of clusters in the current clustering. (wikipedia.org)
  • Methods
  • Equipped with in-situ techniques in combination with Transmission electron microscopy (TEM), Scanning electron microscopy (SEM), and micro-diffraction methods, this nanomechanical testing method can give us rich detail in nanoscale plasticity instabilities in real time. (wikipedia.org)
  • In statistics, single-linkage clustering is one of several methods of hierarchical clustering. (wikipedia.org)
  • outbreaks
  • There are, however, reports of episodic outbreaks of NEC, seasonal variation in incident rates, and clustering, suggesting a role for transmissible infectious agents or other environmental factors around the pregnant mother or newborn infant. (diva-portal.org)
  • sequence
  • Numerical simulation approximates the evolution of the variables with a sequence of points in discretized time. (springer.com)
  • The result of the clustering can be visualized as a dendrogram, which shows the sequence of cluster fusion and the distance at which each fusion took place. (wikipedia.org)
  • these include the temperature of the coolest white dwarfs, which gradually cool as they age, and the dimmest turnoff point of main sequence stars in clusters (lower-mass stars spend a greater amount of time on the main sequence, so the lowest-mass stars that have evolved off of the main sequence set a minimum age). (wikipedia.org)
  • intervals
  • There were significantly more links between cases separated by time intervals of less than 10 years and distances of less than 100 metres than between the others. (bmj.com)
  • From the locally recorded time intervals between the arrival of the S wave and the P wave (S−P times) and from the felt intensities, it is suggested that the rupture zone of this earthquake was larger than the 1973 earthquake and may have extended into the rupture zone of the 1985 Michoacán earthquake. (wikipedia.org)
  • geographical
  • The knowledge about near repeats bases on the experience that crimes of the below mentioned categories are often not committed only once, but several times within a close geographical and temporal context, the so-called spatiotemporal proximity (see also Crime Contagion Models). (wikipedia.org)
  • The software analyses this data and predicts future crimes in a geographical radius of 250m and in a time window of between 24 hours and 7 days. (wikipedia.org)
  • galaxy
  • The Dark Energy Survey investigates the dynamics and large scale structure of the Universe using four probes: Type Ia supernovae, baryon acoustic oscillations (BAO), the number of galaxy clusters, and weak gravitational lensing. (wikipedia.org)
  • The other three techniques (BAO, galaxy clusters, and weak lensing) used by the Dark Energy Survey allow scientists to understand simultaneously the expansion of the universe and the evolution of the dark matter density field perturbations. (wikipedia.org)
  • These perturbations were intrinsically tied to the formation of galaxies and galaxy clusters. (wikipedia.org)
  • This is a very important property for the observation of very distant sources, like Type IA supernovae or galaxy cluster, because the expansion of the universe shifts the photons emitted from a given source towards redder wavelengths. (wikipedia.org)
  • Some of the primary working groups are: the weak lensing working group, the galaxy clusters working group, the large-scale structure working group, the supernova working group, the galaxy evolution working group, and the strong lensing working group. (wikipedia.org)
  • Results
  • We show that by combining the clustering results from low and high resolution spaces, we can recognize precursory events more precisely and decode vital information that cannot be discerned at a single level of resolution. (mexmat.ru)
  • Stack analyzed the results from 42 studies and found that those measuring the effect of a celebrity suicide story were 14.3 times more likely to find a copycat effect than studies that did not. (wikipedia.org)
  • displaystyle
  • The N × N {\displaystyle N\times N} proximity matrix D contains all distances d(i,j). (wikipedia.org)
  • These functions are both determined by finding the smallest cluster C {\displaystyle C} that contains both item i {\displaystyle i} and at least one larger-numbered item. (wikipedia.org)
  • With a value for H 0 {\displaystyle H_{0}} around 6982220372991683943♠68 km/s/Mpc, the Hubble time evaluates to 1 / H 0 {\displaystyle 1/H_{0}} = 7001144000000000000♠14.4 billion years. (wikipedia.org)
  • cancer
  • Using simulation studies and real cancer mortality data, it is compared with the traditional approach for reporting non-overlapping clusters. (springer.com)
  • quantum
  • The Cluster of Excellence QUEST - Centre for Quantum Engineering and Space-Time Research has been funded since November 2007 in the framework of the German Universities Excellence Initiative of the federal and state governments of Germany. (wikipedia.org)
  • The key research areas of the cluster are the quantum engineering and the space-time research. (wikipedia.org)
  • The Cluster of Excellence is with scientists from the fields of quantum optics, laser physics, solid state physics, gravitational physics, theoretical physics and geodesy interdisciplinary orientated. (wikipedia.org)
  • In the cluster quantum effects for the production of new measurement technologies are being explored. (wikipedia.org)
  • galaxies
  • Gravitational collapse enhances these initial fluctuation as baryons fall into the gravitational potential field of more dense regions of space to form galaxies. (wikipedia.org)
  • Galaxies are organized into groups and clusters, often within larger superclusters, that are strung along great filaments between nearly empty voids, forming a web that spans the observable universe. (wikipedia.org)
  • Galaxies can also have satellites in the form of dwarf galaxies and globular clusters. (wikipedia.org)
  • Data
  • The observed data represent seismic activities situated around the Japanese islands in the 1997-2003 time interval. (mexmat.ru)
  • current
  • German Research Foundation: List of current Clusters of Excellence. (wikipedia.org)
  • Though the universe might in theory have a longer history, the International Astronomical Union presently use "age of the universe" to mean the duration of the Lambda-CDM expansion, or equivalently the elapsed time since the Big Bang in the current observable universe. (wikipedia.org)
  • latter
  • If one referred to the same era as "13.8 billion years minus 10−6 seconds ago", the precision of the meaning would be lost because the minuscule latter time interval is eclipsed by uncertainty in the former. (wikipedia.org)
  • case
  • g., a case-control study in which dioxins are measured in biologic tissues) before clusters of soft-tissue sarcoma and non-Hodgkin's lymphoma are ascribed to dioxin released by the municipal solid waste incinerator. (labome.org)
  • The case-control test for space-time clustering developed by Pike and Smith was applied to 96 cases of sarcoidosis diagnosed in the Isle of Man from 1962 to 1983. (bmj.com)
  • In the case of the Hox gene, a shared ancestral ProtoHox cluster was duplicated, resulting in genetic clusters in the Hox gene as well as the ParaHox gene, an evolutionary sister complex of the Hox gene. (wikipedia.org)
  • In the case where a gene cluster is duplicated, some genes may be lost. (wikipedia.org)
  • method
  • seven days (p=0.022) 14 days (p=0.011) and 21 days (p=0.006), and Kulldorff's scan method found seven significant clusters. (diva-portal.org)
  • Almost always, the method will find many very similar overlapping clusters, and it is not useful to report all of them. (springer.com)
  • A drawback of this method is that it tends to produce long thin clusters in which nearby elements of the same cluster have small distances, but elements at opposite ends of a cluster may be much farther from each other than two elements of other clusters. (wikipedia.org)
  • The method is also known as nearest neighbour clustering. (wikipedia.org)
  • found
  • When comparing two time periods, significant clustering on hospital level was found during 1987-1997, but not during 1998-2009. (diva-portal.org)
  • Genes found in a gene cluster may be observed near one another on the same chromosome or on different, but homologous chromosomes. (wikipedia.org)
  • The expression "For His mercy endures forever" is found verbatim in English and the original Hebrew 26 times in Psalm 136. (wikipedia.org)
  • level
  • On residential level, there was no indication of space-time interaction. (diva-portal.org)
  • At this level, the resulting fundamental components are the stars, which are typically assembled in clusters from the various condensing nebulae. (wikipedia.org)
  • n − 1) and L(k) is the level of the kth clustering. (wikipedia.org)
  • Set the level of this clustering to L(m) = d[(r),(s)] Update the proximity matrix, D, by deleting the rows and columns corresponding to clusters (r) and (s) and adding a row and column corresponding to the newly formed cluster. (wikipedia.org)
  • calculate
  • Measurements of the cosmic background radiation give the cooling time of the universe since the Big Bang, and measurements of the expansion rate of the universe can be used to calculate its approximate age by extrapolating backwards in time. (wikipedia.org)
  • Turning this relation around, we can calculate the change in time per change in scale factor and thus calculate the total age of the universe by integrating this formula. (wikipedia.org)
  • similar
  • Over the long, evolutionary time period, the two similar genes would diverge so the proteins of each gene were unique in their functions. (wikipedia.org)
  • high
  • Two of the three clusters of high ICC rates occurred in 2009-2012 in the large metropolitan area of Baltimore City and another cluster in Frederick County, in rural western Maryland. (springer.com)
  • The third cluster of high rates was observed 2005-2008, in western Maryland. (springer.com)
  • Clusters of high incidence are not explained by differences in screening rates and may be due to failures in follow-up care for cervical abnormalities that need to be investigated. (springer.com)
  • It is a multipurpose instrument that will have cryogenic receivers with very high sensitivity in order to observe very faint sources, and filters to observe the Sun. This large receivers input range is quite a big challenge (although is not the first time that it was achieved since ALMA 12 m antennas have the same capacity. (wikipedia.org)
  • example
  • An example of a gene cluster is the Hox gene, which is made up of eight genes and is part of the Homeobox gene family. (wikipedia.org)
  • years
  • The survey will take five years to complete, and the survey footprint will nominally be covered ten times in five photometric bands (g, r, i, z, and Y). DES officially began in August 2013 and completed its second season in February 2015. (wikipedia.org)
  • The Lambda-CDM concordance model describes the evolution of the universe from a very uniform, hot, dense primordial state to its present state over a span of about 13.8 billion years of cosmological time. (wikipedia.org)
  • Different
  • however, over a long, evolutionary time period, the genetic information in the duplicated copy may undergo additional and drastic mutations in which the proteins of the duplicated gene served a different role than those of the original essential gene. (wikipedia.org)
  • whose
  • The shortest of these links that remains at any step causes the fusion of the two clusters whose elements are involved. (wikipedia.org)
  • risk
  • Problem Statement: Despite great efforts to prevent necrotizing enterocolitis (NEC) the incidence may in fact be increasing, and changes in the patient population over time seem to lead to changes in clinical presentation and risk factor spectrum as well. (diva-portal.org)
  • rates
  • We hypothesized that although rates have generally declined, this decline is uneven across counties and over time. (springer.com)
  • A secondary cluster of low rates, comprising 2 metropolitan counties in northern Maryland, was observed for the period 2009-2012. (springer.com)