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Forward transition rates [PDF]

Finance and Stochastics, 2019
The idea of forward rates stems from interest rate theory. It has natural connotations to transition rates in multi-state models. The generalization from the forward mortality rate in a survival model to multi-state models is non-trivial and several ...
Buchardt, K., Furrer, C., Steffensen, M.
core   +3 more sources

Adaptive transition rates in excitable membranes [PDF]

Frontiers in Computational Neuroscience, 2009
Adaptation of activity in excitable membranes occurs over a wide range of timescales. Standard computational approaches handle this wide temporal range in terms of multiple states and related reaction rates emanating from the complexity of ionic channels.
Shimon Marom
doaj   +3 more sources

A technique for approximating transition rates from published survival analyses [PDF]

Cost Effectiveness and Resource Allocation, 2019
Background Quality-adjusted-life-years (QALYs) are used to concurrently quantify morbidity and mortality within a single parameter. For this reason, QALYs can facilitate the discussion of risks and benefits during patient counseling regarding treatment ...
Markian A. Pahuta, Joel Werier, Eugene K. Wai, Roy A. Patchell, Doug Coyle   +4 more
doaj   +2 more sources

Biogeography of soda lake microbiome and uneven cross-continent transition rates [PDF]

Frontiers in Microbiology
Microbial dark matter in soda lakes has been increasingly illuminated, however, much remains unknown about microbial biogeography at the global scale and underlying mechanisms.
Minglei Ren, Jianjun Wang
doaj   +2 more sources

Effects of stocking rate on the state transition processes of plant community in desert steppe [PDF]

BMC Plant Biology
Background To investigate the state transition processes of plant community in desert steppe under different stocking rates, this study aims to systematically uncover the intrinsic characteristics of such transition processes and their underlying network-
Shijie Lv, Zihan Wang, Hui Zhang, Fan Zhang, Hongmei Liu, Ruiting Jia, Xing Li, Liying Liu, Yiwen Yang, Hui Yan   +9 more
doaj   +2 more sources

Superstructure and Distorted-Wave Codes and Their Applications

Atoms, 2022
There have been many observations of the solar and astrophysical spectra of various ions. The diagnostics of these observations require atomic data that include energy levels, oscillator strengths, transition rates, and collision strengths.
Anand K. Bhatia
doaj   +1 more source

Phenotypic stasis with genetic divergence

Peer Community Journal, 2023
Whether or not genetic divergence in the short-term of tens to hundreds of generations is compatible with phenotypic stasis remains a relatively unexplored problem.
Mallard, François, Noble, Luke, Guzella, Thiago, Afonso, Bruno, Baer, Charles F., Teotónio, Henrique   +5 more
doaj   +1 more source

Relativistic Configuration-Interaction and Perturbation Theory Calculations for Heavy Atoms

Atoms, 2021
Heavy atoms present challenges to atomic theory calculations due to the large number of electrons and their complicated interactions. Conventional approaches such as calculations based on Cowan’s code are limited and require a large number of parameters ...
Igor M. Savukov, Dmytro Filin, Pinghan Chu, Michael W. Malone   +3 more
doaj   +1 more source

Atomic Lifetime Data and Databases

Atoms, 2022
Atomic-level lifetimes span a wide range, from attoseconds to years, relating to transition energy, multipole order, atomic core charge, relativistic effects, perturbation of atomic symmetries by external fields, and so on.
Elmar Träbert
doaj   +1 more source

Atomic Lifetimes of Astrophysical Interest in Ions of Fe

Atoms, 2023
Multiply charged ions of iron dominate the EUV spectrum of the solar corona. For the interpretation of such spectra, data on both the atomic structure and the transition rate are essential, most of which are provided by theory and computation.
Elmar Träbert
doaj   +1 more source