Results 31 to 40 of about 1,674,742 (295)

An observational test for correlations between cosmic rays and magnetic fields

, 2013
We derive the magnitude of fluctuations in total synchrotron intensity in the Milky Way and M33, from both observations and theory under various assumption about the relation between cosmic rays and interstellar magnetic fields.
Abdo, Andrew Fletcher, Anvar Shukurov, Arbutina, Arshakian, Banday, Banday, Beck, Beck, Beck, Beck, Beck, Berezinskii, Beuermann, Bridle, Burbidge, Burbidge, Burn, Carilli, Casse, Chi, Christensson, Chyży, Dagkesamanskii, Fatemeh Tabatabaei, Fletcher, Galtier, Gent, Getmantsev, Giacalone, Goldreich, Haslam, Haverkorn, Hoernes, Houde, Kuznetsov, La Porta, Laing, Laura La Porta, Lawson, Lazarian, Lithwick, Longair, Malik, Mao, Mills, Monin, Moss, Ohno, Oppermann, Orienti, Padoan, Parker, Parker, Parker, Pohl, Rainer Beck, Rand, Readhead, Rodion Stepanov, Roger, Rogstad, Ruzmaikin, Ruzmaikin, Scheuer, Schlickeiser, Scott, Shukurov, Slish, Snodin, Sokoloff, Stepanov, Stepanov, Stil, Sveshnikov, Tabatabaei, Tabatabaei, Tabatabaei, Tabatabaei, Volegova, Wilkin, Williams   +81 more
core   +1 more source

The $\Omega$ Dependence in the Equations of Motion [PDF]

, 1997
We show that the equations of motion governing the evolution of a collisionless gravitating system of particles in an expanding universe can be cast in a form which is almost independent of the cosmological density parameter, $\Omega$, and the ...
Colberg, Jörg M., Nusser, Adi
core   +1 more source

Die Waardes, Verwagtings en Bevredigings van Suid-Afrikaanse T elevisienuuskykers

Communicare, 2022
THIS Investigation examines the audience experience with television news in South Africa and presents a process model of uses and gratifications based upon an expectancy-value approach. The prime objective was accomplished when three reliable scales for
Linda Venter, Nina Overton
doaj   +1 more source

Quantum Parametric Resonance of a dissipative oscillator: fading and persistent memory in the long-time evolution

, 2019
The evolution of a quantum oscillator, with periodically varying frequency and damping, is studied in the two cases of parametric resonance (PR) producing a limited, or unlimited stretching of the wave function.
Ferrari, Loris
core   +1 more source

Perturbing an axisymmetric magnetic equilibrium to obtain a quasi-axisymmetric stellarator

, 2020
It is demonstrated that finite-pressure, approximately quasi-axisymmetric stellarator equilibria can be directly constructed (without numerical optimization) via perturbations of given axisymmetric equilibria.
Plunk, G. G.
core   +1 more source

Assessment of Carbon Stock at Tree Level Using Terrestrial Laser Scanning Vs. Traditional Methods in Tropical Forest, India

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Accurate assessment of carbon stock of trees is essential to model carbon dynamics in the forest ecosystem. Estimation of carbon stock at regional level involves successive quantitative modeling at various scales.
Jayant Singhal, Gaurav Srivastava, C. Sudhakar Reddy, Gopalakrishnan Rajashekar, Chandra Jha, P. V. Rao, Gillella Reddy, Parth Roy   +7 more
doaj   +1 more source

The work relative value estimation assessment in China: an empirical research for common surgical procedures

Frontiers in Public Health
ObjectivesChina’s National Health Service Items Standard (NHSIS) establishes a relative value system and plays an important role in pricing. However, there are few empirical evaluations of the objectivity of the NHSIS-estimated relative value.MethodsThis
Jin Hao, Jin Hao, Han Yao, Ling Kong, Yuanli Liu   +4 more
doaj   +1 more source

The importance of rating scales in measuring patient-reported outcomes

Health and Quality of Life Outcomes, 2012
Background A critical component that influences the measurement properties of a patient-reported outcome (PRO) instrument is the rating scale. Yet, there is a lack of general consensus regarding optimal rating scale format, including aspects of question ...
Khadka Jyoti, Gothwal Vijaya K, McAlinden Colm, Lamoureux Ecosse L, Pesudovs Konrad   +4 more
doaj   +1 more source

Primordial magnetic fields from self-ordering scalar fields

, 2015
A symmetry-breaking phase transition in the early universe could have led to the formation of cosmic defects. Because these defects dynamically excite not only scalar and tensor type cosmological perturbations but also vector type ones, they may serve as
Horiguchi, Kouichirou, Ichiki, Kiyotomo, Sekiguchi, Toyokazu, Sugiyama, Naoshi   +3 more
core   +1 more source

Strong Limit on a Variable Proton-to-Electron Mass Ratio from Molecules in the Distant Universe [PDF]

, 2008
The Standard Model of particle physics assumes that the so-called fundamental constants are universal and unchanging. Absorption lines arising in molecular clouds along quasar sightlines offer a precise test for variations in the proton-to-electron mass ...
C. Henkel, Carilli, Flambaum, M. T. Murphy, Murphy, Reinhold, S. Muller, V. V. Flambaum   +7 more
core   +1 more source