Results 31 to 40 of about 332,912 (239)
Risk factor aggregation and stress testing [PDF]
arXiv, 2023 Stress testing refers to the application of adverse financial or macroeconomic scenarios to a portfolio. For this purpose, financial or macroeconomic risk factors are linked with asset returns, typically via a factor model. We expand the range of risk factors by adapting dimension-reduction techniques from unsupervised learning, namely PCA and ...
arxiv
Platelet activating factor in allergies
International Journal of Immunopathology and Pharmacology, 2015 The platelet-activating factor (PAF) produced and released by mast cells, basophils, neutrophils, eosinophils, fibroblasts, platelets, endothelial cells, and even cardiac muscle cells plays an important role in inflammatory and thrombotic diseases. PAF has been shown to be an important mediator in anaphylaxis. Serum level of the factor correlates with
Zbigniew Bartuzi, Krzysztof Pałgan
openaire +3 more sources
Factorizations of almost simple groups with a factor having many nonsolvable composition factors [PDF]
arXiv, 2017 This paper classifies the factorizations of almost simple groups with a factor having at least two nonsolvable composition factors. This together with a previous classification result of the authors reduces the factorization problem of almost simple groups to the case where both factors have a unique nonsolvable composition factor.
arxiv
Platelet-Activating Factor-Receptor and Tumor Immunity [PDF]
, 2014 First described in 1972 by Benveniste and colleagues, platelet-activating factor (PAF) remains one of the potent phospholipid known to date. The role of PAF produced enzymatically in mediating diverse biological and pathophysiological processes including
Konger, Raymond L. +2 more
core
Some Results on Factorization of Monoids [PDF]
arXiv, 2022 Factorizations of monoids are studied. Two necessary and sufficient conditions in terms of so-called descent 1-cocyles for a monoid to be factorized through two submonoids are found. A full classification of those factorizations of a monoid whose one factor is a subgroup of the monoid is obtained.
arxiv
Is the High Frequency of Postoperative Atrial Fibrillation after Cardiac and Lung Surgeries Related to Hypomagnesemia and Releases of Ceramides and Platelet-Activating Factor? [PDF]
, 2016 The authors discuss the possible role of hypomagnesemia, ceramides and platelet-activating factor in the incidence of postoperative atrial fibrillation after cardiac and lung ...
Altura, Bella T. +5 more
core +1 more source
Interpretable Sparse Proximate Factors for Large Dimensions [PDF]
arXiv, 2018 This paper proposes sparse and easy-to-interpret proximate factors to approximate statistical latent factors. Latent factors in a large-dimensional factor model can be estimated by principal component analysis (PCA), but are usually hard to interpret.
arxiv
Factor Investing with a Deep Multi-Factor Model [PDF]
arXiv, 2022 Modeling and characterizing multiple factors is perhaps the most important step in achieving excess returns over market benchmarks. Both academia and industry are striving to find new factors that have good explanatory power for future stock returns and good stability of their predictive power.
arxiv
High expression of beta-adrenergic receptor kinase in human peripheral blood leukocytes. Isoproterenol and platelet activating factor can induce kinase translocation. [PDF]
, 1992 Receptor phosphorylation is a key step in the process of desensitization of the beta-adrenergic and other related receptors. A selective kinase (called beta-adrenergic receptor kinase, beta ARK) has been identified which phosphorylates the agonist ...
A De Blasi +4 more
core +1 more source
Platelet-Activating Factor and Pain
Biological and Pharmaceutical Bulletin, 2011 Platelet-activating factor (PAF) is a phospholipid mediator that regulates the functions of a variety of cells in the peripheral tissues and in the nervous system. Findings that injection of PAF exogenously at the skin or in the spinal cord induced pain hypersensitivity gave us much attention to its role in pain signaling. Studies using pharmacological
Makoto Tsuda +2 more
openaire +4 more sources