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Stability of rating transitions [PDF]
Journal of Banking & Finance, 2000 The distribution of ratings changes plays a crucial role in many credit risk models. As is well known, these distributions vary across time and different issuer types. Ignoring such dependencies may lead to inaccurate assessments of credit risk. In this paper, a quantification is provided of the dependence of ratings transition probabilities on the ...
Pamela Nickell +2 more
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Modeling rating transitions [PDF]
Journal of the Korean Statistical Society, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Weißbach, Rafael, Mollenhauer, Thomas
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Ratings in Transition: Industry Implications
Media International Australia, 2002This seminar discusses the implications for the industry of changes in the provision of ratings services in the metropolitan television markets in Australia. It brings together key players from the ratings companies, media planners and buyers, public broadcasters and leading academics.
O'Regan, Tom +5 more
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A critical look at transition ratings
Journal of Clinical Epidemiology, 2002Patient ratings of the extent to which they have improved or deteriorated-transition ratings-are extremely common in clinical practice and clinical research. However, some have raised concerns about transition rating validity. We examined data from three studies, each of which explored the relation between a disease-specific health-related quality of ...
Gordon H, Guyatt +3 more
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Interband transition rate in GaAs
Physical Review B, 1991Starting from a quantum-kinetic Boltzmann equation, the scattering rate for interband transition processes in GaAs is calculated numerically, taking into account a realistic band structure with corresponding Bloch wave functions. We compare with approximate solutions for this scattering rate such as the Keldysh or the Bethe formula, which are ...
, Stobbe +4 more
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Transition rates in a stochastic medium
Physical Review A, 1992A description of noise-induced reaction rates in a fluctuating medium is presented. The environment is assumed to exist in a number of distinct configurations and transitions between these configurations are governed by a Markov process. The environment fluctuations drive transitions between reactant and product regions described by a set of ...
, Gaveau +3 more
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Transition rates and transition rate diagrams in atomic emission spectroscopy: A review
Spectrochimica Acta Part B: Atomic Spectroscopy, 2015Abstract In low pressure plasmas with low electron densities, such as glow discharges, radiative de-excitation is a major de-excitation process of most excited states. Their relative de-excitation rates can be determined by emission spectroscopy, making it possible to study excitation processes in these discharges.
Zdeněk Weiss +2 more
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Nuclear Physics A, 1969
Abstract The decay of 161 Tb has been studied using a high-resolution Ge(Li) detector. Five new transitions were observed and fitted into the earlier proposed decay scheme. The half-life of the 131.8keV level in 161 Dy was determined in a delayed-coincidence measurement to be 145 ±15 psec.
V. Berg, S.G. Malmskog
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Abstract The decay of 161 Tb has been studied using a high-resolution Ge(Li) detector. Five new transitions were observed and fitted into the earlier proposed decay scheme. The half-life of the 131.8keV level in 161 Dy was determined in a delayed-coincidence measurement to be 145 ±15 psec.
V. Berg, S.G. Malmskog
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