Results 41 to 50 of about 7,395,903 (283)

Possible distance indicators in gamma-ray pulsars [PDF]

, 2011
Distance measurement of gamma-ray pulsars is a current challenge in pulsar studies. The Large Area Telescope (LAT) aboard the Fermi gamma-ray observatory discovered more than 70 gamma-ray pulsars including 24 new gamma-selected pulsars with almost no ...
Wei Wang
semanticscholar   +1 more source

Process of ranking countries by level of development

Croatian Review of Economic, Business and Social Statistics, 2018
The paper presents the process of ranking and classifying countries using the I-distance method. The I-distance method is a method of classification and multidimensional ranking based on the distance values between selected indicators.
Račić Željko V.
doaj   +1 more source

THE EDGE OF THE MILKY WAY STELLAR DISK REVEALED USING CLUMP GIANT STARS AS DISTANCE INDICATORS [PDF]

, 2011
We use the clump giants of the disk as standard candles calibrated from Hipparcos parallaxes in order to map their distribution with two new near-infrared surveys of the Galactic plane: UKIDSS-GPS and VISTA Variables in the Vía Láctea (VVV).
D. Minniti, R. Saito, J. Alonso-García, P. Lucas, M. Hempel   +4 more
semanticscholar   +1 more source

Constraints on cosmological models and reconstructing the acceleration history of the Universe with gamma-ray burst distance indicators [PDF]

, 2009
Gamma-ray bursts (GRBs) have been regarded as standard candles at very high redshift for cosmology research. We have proposed a new method to calibrate GRB distance indicators with Type Ia supernova (SNe Ia) data in a completely cosmology-independent way
N. Liang, Pu-Xun Wu, Shuang-Nan Zhang
semanticscholar   +1 more source

Early Indicators of Human Activity During COVID-19 Period Using Digital Trace Data of Population Activities

Frontiers in Built Environment, 2021
The spread of pandemics such as COVID-19 is strongly linked to human activities. The objective of this article is to specify and examine early indicators of disease spread risk in cities during the initial stages of outbreak based on patterns of human ...
Xinyu Gao, Chao Fan, Yang Yang, Sanghyeon Lee, Qingchun Li, Mikel Maron, Ali Mostafavi   +6 more
doaj   +1 more source

The Hubble Space Telescope Key Project on the Extragalactic Distance Scale. XXVI. The Calibration of Population II Secondary Distance Indicators and the Value of the Hubble Constant [PDF]

, 1999
A Cepheid-based calibration is derived for four distance indicators that utilize stars in old stellar populations: the tip of the red giant branch (TRGB), the planetary nebula luminosity function (PNLF), the globular cluster luminosity function (GCLF ...
L. Ferrarese, J. Mould, R. Kennicutt, J. Huchra, H. Ford, P. Stetson, B. Madore, W. Freedman, S. Sakai, B. Gibson, J. Graham, S. M. Hughes, G. Illingworth, D. Kelson, L. Macri, A. Saha, K. Sebo, N. Silbermann   +17 more
semanticscholar   +1 more source

Spatial Analysis by Distance Indices

The Journal of Animal Ecology, 1995
1. A new method of quantifying spatial pattern was introduced for two-dimensional mapped data, with an associated index of aggregation and a test for departures from randomness, based on an attractive algorithm in which individuals in the sample move to a regular arrangement which resembles a hexagonal lattice, using Voronoi tessellations.
openaire   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

GIS modeling of seismic vulnerability of residential fabrics considering geotechnical, structural, social and physical distance indicators in Tehran using multi-criteria decision-making techniques

, 2014
. The main issue in determining seismic vulnerability is having a comprehensive view of all probable damages related to earthquake occurrence. Therefore, taking into account factors such as peak ground acceleration at the time of earthquake occurrence ...
F. Rezaie, M. Panahi
semanticscholar   +1 more source

On the Nonclassicality Distance Indicator of Qudits

Physics of Particles and Nuclei
We consider the nonclassicality distance indicator of a state in finite-dimensional quantum systems which is evaluating a state nonclassicality by its remoteness from the set of "classical states". The latter are identified with those states whose Wigner function is non-negative. The corresponding Wigner function's positivity polytope in the simplex of
Khvedelidze, Arsen, Torosyan, Astghik
openaire   +2 more sources