Results 71 to 80 of about 285,483 (304)
Total positivity, Gramian matrices, and Schur polynomials [PDF]
This paper investigated the total positivity of Gramian matrices associated with general bases of functions. It demonstrated that the total positivity of collocation matrices for totally positive bases extends to their Gramian matrices.
Díaz, Pablo +2 more
core +1 more source
Non-exchangeable copulas and multivariate total positivity [PDF]
, 2016 Multivariate total positivity of order 2 (MTP2) is a dependence property with a number of applications in statistics and mathematics. Given the theoretical and practical relevance of MTP2, it is important to investigate the conditions under which ...
Lupi, Claudio, CERQUETI, ROY
core +2 more sources
Generalized positivity bounds on chiral perturbation theory
Journal of High Energy Physics, 2020 Recently, a new set of positivity bounds with t derivatives have been discovered. We explore the generic features of these generalized positivity bounds with loop amplitudes and apply these bounds to constrain the parameters in chiral perturbation theory
Yu-Jia Wang +3 more
doaj +1 more source
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Objective To compare the efficacy and safety of roxarestat versus recombinant human erythropoietin (rhEPO) in the management of renal anemia in patients undergoing maintenance hemodialysis. Methods This was a prospective, open‐label, randomized controlled trial.
Lingling Chen, Junjie Zhu, Qiaonan Ge
wiley +1 more source
PLoS ONE, 2017 ObjectiveThyroid peroxidase antibody (TPOAb), the most common antibody frequently measured in population surveys is a protein expressed in the thyroid gland.
Atieh Amouzegar +6 more
doaj +1 more source
PD-L1 expression in EBV associated gastric cancer: a systematic review and meta-analysis
Discover Oncology, 2022 Objectives The aim of this systematic review and meta-analysis is to the summarize the evidence on programmed cell death protein ligand 1 (PD-L1) in Epstein-Barr virus associated gastric cancer (EBVaGC) and to estimate the expression rate of PD-L1 among ...
Áurea Lima +4 more
doaj +1 more source
On the Generating Functions of Totally Positive Sequences [PDF]
Proceedings of the National Academy of Sciences, 1951 A real matrix, finite or infinite, is called totally positive if and only if all its minors, of all orders = 1, 2,..., are non-negative. An infinite sequence $$ {a_0},{a_1},{a_2}, \ldots ,\quad \left( {{a_0} = 1} \right), $$ is said to be totally positive(2) if and only if the 2-way infinite matrix Open image in new window is totally ...
Aissen, Michael +3 more
openaire +3 more sources
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Neuromyelitis optica spectrum disorder (NMOSD) is a relapsing autoimmune disease of the central nervous system. High‐dose intravenous methylprednisolone (IVMP) is the standard first‐line therapy for acute attacks, although some patients remain refractory.
Wataru Horiguchi +5 more
wiley +1 more source
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Introduction Pre‐dilution online hemodiafiltration (Pre‐HDF) is predominantly used in Japan, whereas post‐dilution online HDF (Post‐HDF) is more common in Europe. An asymmetric cellulose triacetate (ATA) membrane may improve biocompatibility.
Kenji Sakurai +4 more
wiley +1 more source
Total positivity in Markov structures
The Annals of Statistics, 2017 We discuss properties of distributions that are multivariate totally positive of order two (MTP$_{2}$) related to conditional independence. In particular, we show that any independence model generated by an MTP$_{2}$ distribution is a compositional semigraphoid which is upward-stable and singleton-transitive.
Fallat, Shaun +5 more
openaire +6 more sources