Durch Anwendung von sogenannten Spline-Funktionen wird die Rauschverst�rkung, die bei der Abel-Transformation von verrauschten Me�werten auftritt, reduziert. Durch die strikte Trennung von Gl�ttung und Abel-Inversion ergeben sich �bersichtliche Verh�ltnisse. Das Verfahren ist �bertragbar auf F�lle mit nicht-�quidistanter ...
NASA Astrophysics Data System (ADS)
BackgroundGenome-Wide Association (GWA) analysis is a powerful method for identifying loci associated with complex traits and drug response. Parts of GWA analyses, especially those involving thousands of individuals and consuming hours to months, will benefit from parallel computation. It is arduous acquiring the necessary programming skills to correctly partition and ...
PubMed Central
Strong Normalization for Equi-(Co-)Inductive Types Andreas Abel Department of Computer Science Ludwig-Maximilians-University Munich TYPES Workshop, 2 May 2007 Cividale, Italy Andreas Abel (LMU Munich) Normalization for Equi-Inductive Types TYPES'07 1 / 16 #12;Introduction ...
E-print Network
The autoconvolution equation of the third kind with coefficient of general power type is dealt with by the method of weighted norms developed for equations with coefficients of linear and integer power type in recent joint work of the author with L. Berg, J. Janno, and B. Hofmann. For this equation two existence theorems and a ...
... emitters are in Abell type clusters. ... with the brightest cluster member or ... WAVES, RADIO INTERFEROMETERS, STARS, OPTICAL PROPERTIES ...
DTIC Science & Technology
... respectively. An asymptotic formula for the discretization error is obtained. The method is illustrated by a numerical example. ...
In the scale of the growth types of entire functions defined in terms of certain comparison functions the maximal convergence and uniqueness spaces are found for Abel-Goncharov interpolation problems with nodes of interpolation (either arbitrary complex or real) in classes defined by a sequence of majorants of the nodes.
Energy Citations Database
a Centre for Experimental and Constructive Mathematics ...... the computer algebra systems available have implemented methods for this relevant problem ...
The vast majority of the matter in the universe is of an unknown type. This matter is called dark matter by astronomers. The dark matter manifests itself only through gravitational interaction and is otherwise undetectable. The distribution of this matter in can be better understood by studying the mass profile of galaxy clusters. The X-ray emissions of the galaxy cluster ...
Both Abell 30 and Abell 78 exhibit remarkable morphological disparities between their images in (O III) lambda5007 and H..cap alpha.. lambda6563. This is due to hydrogen depletion in the inner regions of the two planetary nebulae. The material appears to be the end product of a hydrogen-burning shell which has subsequently been ejected. With the exception ...
Context: Massive galaxy clusters at intermediate redshift can magnify the flux of distant background sources by several magnitudes. Aims: We exploit this effect to search for lensed distant supernovae that may otherwise be too faint to be detected. Methods: A supernova search was conducted at near infrared wavelengths using the ISAAC instrument at the VLT. The massive ...
Normalization by Evaluation for Martin�Lof Type Theory Andreas Abel 1 , Klaus Aehlig 2 , Peter of Technology Arbeitstre#en Bern�Munchen 2006 December 7, 2006 Andreas Abel, Klaus Aehlig, Peter Dybjer (LMU Berger Schwichtenberg (LICS91): objects of the meta�language can be brought ``down'' to the object
Normalization by Evaluation for Martin-L�of Type Theory Andreas Abel1, Klaus Aehlig2, Peter Dybjer3 of Technology Arbeitstreffen Bern-M�unchen 2006 December 7, 2006 Andreas Abel, Klaus Aehlig, Peter Dybjer (LMU Berger Schwichtenberg (LICS91): objects of the meta-language can be brought "down" to the object
The geometric approach to study the dynamics of U(1)-invariant membranes is developed. The approach reveals an important role of the Abel nonlinear differential equation of the first type with variable coefficients depending on time and one of the membrane extendedness parameters. The general solution of the Abel equation is ...
We describe our methods for measuring the Hubble constant from Ryle Telescope (RT) interferometric observations of the Sunyaev-Zel'dovich (SZ) effect from a galaxy cluster and observation of the cluster X-ray emission. We analyse the error budget in this method: as well as radio and X-ray random errors, we consider the effects of clumping and temperature ...
... with those obtained by Abeles' exact multilayer theory. ... 2, a method for designing volume, dielectric, reflection gratings having unslanted ...
... Personal Author(s) : Caraway, Willie D., III ; Abell, David C. Handle / proxy Url : Report Date : APR 1996. Pagination or Media Count : 18. ...
... Personal Author(s) : Abell, David C. ; Caraway, Willie D. Handle / proxy Url : Report Date : JUL 1998. Pagination or Media Count : 13. ...
We present a new method for the analysis of Abell 1835 observed by XMM-Newton. The method is a combination of the Direct Demodulation technique and deprojection. We eliminate the effects of the point spread function (PSF) with the Direct Demodulation technique. We then use a traditional deprojection technique to study the properties of ...
We present new radial velocity measurements of 147, 65 and 14 galaxies in the rich galaxy clusters Abell 154, Abell 104 and Abell 71, respectively. Data was collected using the Hydra Multi-Object Spectrograph on the WIYN 3.5-meter telescope at Kitt Peak National Observatory. Preliminary results exhibit complex velocity structures ...
Stringent upper limits for H$beta$ emission from ionized intergalactic gas are reported for four rich clusters of galaxies with a wide range of X-ray luminosities. For the clusters Abell 779, Abell 1367, Abell 1656 (Coma), and Abell 2199, the 2 sigma limit gives F (H$beta$) approximately-less- ...
A summability method for series, which is called in this paper the generalized Abel-Poisson method, is introduced. For functions in H{sup p}, 0<p{<=}1, it is shown that the rate of approximation of the boundary function by the generalized Abel-Poisson means is equivalent to the modulus of smoothness ...
The Abel-Plana formula (APF) is a widely used tool for calculations in Casimir-type problems. In this paper, we present a particular explicit modification of the generalized APF for the functions with non-integrable branch-point singularities.
The tomographic reconstruction of local plasma parameters for nonequilibrium plasma sources is a developing approach, which has a great potential in understanding the fundamental processes and phenomena during plasma processing of SRF cavity walls. Any type of SRF cavity presents a plasma rector with limited or distorted symmetry and possible presence of high gradients. ...
The extended Jones matrix method is applied to one dielectrically anisotropic, homogeneous thin film at oblique incidence. Standard boundary conditions are imposed on resultant electric- and magnetic-field vectors at interfaces. Thus simple matricial relations are obtained for transmitted and reflected electric-field amplitudes at the two interfaces. In the limits of isotropy, ...
PubMed
Aims: The nearby galaxy clusters Abell 496 and Abell 85 are studied in the very high-energy (VHE, E > 100 GeV) band to investigate VHE cosmic rays (CRs) in this class of objects which are the largest gravitationally bound systems in the Universe. Methods: HESS, an array of four imaging atmospheric cherenkov telescopes (IACT), was ...
Context: The mechanisms giving rise to diffuse radio emission in galaxy clusters, and in particular their connection with cluster mergers, are still debated. Aims: We aim to obtain new insights into the internal dynamics of the cluster Abell 1240, which appears to contain two roughly symmetric radio relics, separated by ~2 h_70-1 Mpc. Methods: Our ...
The Abel�s matrix formalism is combined with the plane-wave expansion method to calculate the radiation emitted by an oscillating dipole embedded within a periodic multilayer planar structure. This approach is implemented to account for the soft-x-ray Kossel structures recently observed with W/C multilayers [P. Jonnard , Phys. Rev. A 68, 032505 (2003)].
Context. The Abell 222 and 223 clusters are located at an average redshift z ~ 0.21 and are separated by 0.26 deg. Signatures of mergers have been previously found in these clusters, both in X-rays and at optical wavelengths, thus motivating our study. In X-rays, they are relatively bright, and Abell 223 shows a double structure. A filament has also been ...
level of classification for both types of holography ..... the Idaho. National. Engineering. Laboratory has applied holography in two phase flow and in electric .... Radon transform. -. General axlsymmetric dimensional. - Abel integral ...
NASA Website
Traffic engineering must be concerned with a broad definition of service that includes network availability, reliability and stability, as well as traditional traffic data on loss, throughput, delay and jitter. MPLS and Virtual Private Networks (VPNs) significantly contribute to security and Quality of Service (QoS) within communication networks, but there remains a need for metric measurement and ...
It is much richer in faint blue galaxies that Abell 222, suggesting that star formation has ... the northeast, and is presently falling on to Abell 222. ...
Simultaneous determinations of local electron density and magnetic flux surface in a tokamak plasma have been made feasible with multichannel interferometry using a new asymmetric Abel inversion method. This new method takes advantage of interferometry by...
National Technical Information Service (NTIS)
This document is a continuation of work derived in 'A Method for the Determination of Target Aspect Angle with Respect to a Radar' by Caraway and Abell. The original paper derived the target aspect angle assuming that the radar would be emplaced level wit...
Genotype imputation methods have become increasingly popular for recovering untyped genotype data. An important application with imputed genotypes is to test genetic association for diseases. Imputation-based association test can provide additional insight beyond what is provided by testing on typed tagging SNPs only. A variety of effective ...
We present an analysis of the two-point correlation function, xi (r), of the X-ray Brightest Abell-type Cluster sample (XBACs) of Ebeling et al. and of the cosmological constraints that it provides. If xi (r) is modelled as a power-law, xi (r)=(r_0/r)^gamma, we find r_0~= 26.0 +/- 4.5 h^-1 Mpc and gamma ~= 2.0 +/- 0.4, with errors corresponding to 2 sigma uncertainties for one ...
The Abel inversion is the most frequently used method to retrieve the electron density from radio occultation measurements. From either modeling or real data evaluation, the error distribution is determined. It can result in the pseudo plasma cave, the E layer three peaks along the latitude, the out of phase wave number 4 structure in the E and F1 layer ...
Propagation of the various errors in a new asymmetric Abel-inversion method is investigated. In order to provide a meaningful error analysis of the inversion process, both the effects of geometrical factors and measuremental errors are studied. The dominant source of uncertainty in the determination of local electron density is due to the spline fitting of ...
DOE Information Bridge
... OF ABEL'S INTEGRAL EQUATION IS AN ESSENTIAL STEP IN THE RECONSTRUCTION OF THE RADIAL OPTICAL DENSITY PROFILE OF A ...
A discussion of the meaning of mathematical unsolvability in the context of the history of Abel's proof of the unsolvability of the quintic equation in terms of radicals.
NSDL National Science Digital Library
Refractively inhomogeneous, cylindrically symmetric test objects, when placed in a Mach-Zehnder interferometer, cause fringe shifts that cannot be reduced with an inverted Abel integral equation to accurately determine the internal index of refraction dis...
A method in which the FFT (Fast Fourier Transform) allows side on data to be determined, is presented. The FFT is further used to process the data by optimal filtering of the noise, determining the location of the center, measuring the asymmetry, and symm...
New Abel inversion methods were developed for real-time calculations of emissions from circularly and elliptically symmetric radiation sources. Using the geometrical relationship between the plasma and the measuring device, an upper triangular area matrix was introduced to determine the local plasma emissivity from the measured irradiation value. Fast ...
One of the greatest quandaries in modern cosmology is understanding the nature of dark matter. Although not visibly observable, dark matter influences the evolution of the universe through its empirical gravitational effects. As a result, gravitational lensing is the only unambiguous method of accurately measuring this matter independently of its type, ...
Aims: We investigate the effect of the cluster environment on the star formation properties of galaxies in 8 nearby Abell clusters. Methods: Star formation properties are determined for individual galaxies using the equivalent width of H?+[Nii] line emission from narrow-band imaging. Equivalent width distributions are derived for each galaxy ...
In order to get precise local electron density information from chordal interferometric measurement of a tokamak plasma, a self- consistent and reliable inversion method is necessary. In this paper, a new asymmetric Abel-inversion method is introduced. This method includes flexible boundary conditions, application ...
John Abele, Founder Chairman of Boston Scientific Corporation, spoke at AAMI's 30th Annual Meeting on 22 May in Anaheim, CA. His speech was part of AAMI's plenary session, "The Impact of a Reformed Health System on New Technology." After his speech, Abele joined three of AAMI's experts in a roundtable discussion on the topics he raised. See the BI&T ...
In this work, we examine the conformational dynamics of long polymer molecules under confinement, as in the recently developed anti-Brownian electrokinetic (ABEL) trap [A. Cohen and W. Moerner, Proc. Natl. Acad. Sci. USA. 103, 4362 (2006)]. We analyze polymer motion using Brownian dynamics simulations (bead-spring and bead-rod models) and via Monte Carlo ...
In this series of papers we explore the evolution of late-type galaxies in the rich cluster Abell 85. In this first paper we revisit the complex dynamical state of A 85 by using independent methods. First, we analyze the galaxy redshift distribution towards A 85 in the whole range 0-40 000 km s-1, and determine the mean redshifts of ...
Context: The morphology and stellar populations of low-luminosity early-type galaxies in clusters have until now been limited to a few relatively nearby clusters such as Virgo or Fornax. Scenarii for the formation and evolution of dwarf galaxies in clusters are therefore not well constrained. Aims: We investigate here the morphology and stellar populations of low-luminosity ...
We thus chose the data compiled and standardized by Hudson et al. (2001, Cat. J/MNRAS/327/249) for 699 early-type galaxies in 56 clusters, in the redshift range from 0.007 to 0.053 (Streaming Motions of Abell Clusters (SMAC) catalogue). (1 data file).
Wide-field optical and near-IR (JHK) imaging is presented for two rich galaxy clusters: Abell 370 at z = 0.374 and Abell 851 (Cl 0939+47) at z = 0.407. The new data are combined to produce colors sampling the 0.55-1.65 micron range in the rest frame. Galaxy catalogs selected from the near-IR images are 90% complete to a limiting magnitude approximately 1.5 ...
The difference in amplitudes between the galaxy-galaxy correlation function and the correlation function between Abell clusters is a consequence of two facts. Firstly, most Abell clusters with z
Mar 12, 1990 ... The ABELL database contains information from a catalog of clusters of galaxies, each having at least 30 members within the magnitude range ...
A reflection method is developed to characterize the sound field distribution. Instead of sphere reflection method or thin wires reflection method, a line response function of experimental step-edge distribution combined with the inverse Abel transforms is used to estimate the beam distributions of ultrasonic ...
The paper `Properties of the X-ray-brightest Abell-type clusters of galaxies (XBACs) from ROSAT All-Sky Survey data - I. The sample was published in Mon. Not. R. Astron. Soc. 281, 799-829 (1996). A typesetting error caused six lines of data to be omitted from Table 3 (on page 823). The correct version of that page of Table 3 is printed over-leaf. See Journal. The authors are ...
UU Sge, the eclipsing binary central star of the low- surface-brightness planetary nebula (PN) Abell 63, has been observed spectroscopically in the visible throughout its 11.2 hour period and especially during the minimum. A determination of the spectral types of the components of the binary system has been made. The primary hot central star is an `sdO' ...
We present a study of bar and host disk evolution in a dense cluster environment, based on a sample of ~800 bright (M V <= -18) galaxies in the Abell 901/2 supercluster at z~ 0.165. We use Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) F606W imaging from the STAGES survey, and data from Spitzer, XMM-Newton, and COMBO-17. We identify and characterize bars ...
We study the topology of large-scale structure through a genus curve measurement of the recent Abell
NASA Technical Reports Server (NTRS)
... Title : Systems of Generalized Abel Integral Equations with Applications to Simultaneous Dual Relations. Descriptive Note : Interim rept.,. ...
... BY PARTS, ABEL'S IDENTITY, AND MATHEMATICAL ... Personal Author(s) : MARLOW,WH. ... DISTRIBUTION THEORY, IDENTITIES, SERIES ...
... Title : SOME INTEGRAL EQUATIONS RELATED TO ABEL'S EQUATION AND THE HILBERT TRANSFORM. Descriptive Note : Technical rept.,. ...
... Accession Number : ADA106239. Title : Iterative Abel Inversion of Optically Thick, Cylindrically Symmetric Radiation Sources. ...
... system address decoder. The minimal system address decoder ... presents the Abel software program for the address decoder. Abel ...
A method of inverting Abel's integral equation, which is fairly insensitive to experimental errors, is described. The method approximates the radial distribution by a series of Gaussian distributions; hence the accuracy is best in problems such as gas columns, where Gaussian distributions might be expected. (auth)
Global parameters for 227 CGCG galaxies in eight low redshift Abell clusters are presented. Galaxies in the following clusters have been observed: A262, A347, A400, A426, A569, A779, A1367, and A1656. For each galaxy the observing run and Halpha filter used, the absolute B magnitude, galaxy type, Right ascension and Declination, major-to-minor axis ratio, ...
A sample of 11 spiral galaxies in each of the clusters Abell 1367 and Coma (Abell 1656) was observed in the 21-cm H I line with the Arecibo 305-m radio telescope. Nine galaxies are detected in Al367 and three in Coma. Comparison of the quantity log M/sub H/L/sub pg/ for each galaxy with the mean value for its Hubble type from the ...
-Conversion DTP'08 10 / 27 #12;Applicative Structure Domain D of values with 2 operations: 1 Application � : D. Semantic equality d = d : X iff d : X d : X. Abel Coquand Dybjer (LMU, CTH) Semantic -Conversion DTP'08) Semantic -Conversion DTP'08 20 / 27 #12;Strong Semantic Equality Equip D with reevaluation d D. Define strong
:_fij-equality_______________________________ o Checking dependent types requires equality test o One approach: reduce to normal form Alternates weak head normalization and comparison of head symbols Slide 3 o We extend r; s; t ::= c | x | xt | r s expressions A; B; C ::= Set| Elt | FunA (x
We have examined the HEAO A-2/sup 3/ all-sky data base for 2-10 keV X-ray emission from the 225 Abell clusters of galaxies listed in Abell's (1958) catalog which are of distance class 4 or less, and are within the fraction of the sky surveyed completely by Abell. Thirty-two identifications of clusters with X-ray sources were ...
] FoSSaCS 03 [11] In workshop proceedings:Haskell 05 [16] FroCoS 05 [15] LFM 04 [9 Frameworks and Metalanguages (LFM 04), IJCAR, Cork, Ire- land, 2004. [10] Andreas Abel and Ralph, Computer Science Logic, Karpacz, Poland. LFM 04 Weak Normalization for the Simply-Typed Lambda
and it was classified as a planetary nebula (PN) in 1963 (Kohoutek 1963, PN G066.7-28.2). NGC 7094 is located, 1041 Kohoutek, L. 1963, Bulletin of the Astronomical Institute of Czechoslovakia, 14, 70 Miksa, S