Results 131 to 140 of about 1,548,165 (297)

Four‐Year Cognitive Outcomes in Multiple Sclerosis: Associations With Lesion Myelin Integrity

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Cognitive impairment is prevalent in patients with multiple sclerosis (MS) but whether lesion myelin integrity influences future cognitive outcomes remains unclear. We investigated the relationship between baseline lesion myelin water fraction (MWF) and cognitive performance 4 years later.
Iliana Pliska‐Bloch   +9 more
wiley   +1 more source

Stability Of Square Interval Matrices For Discrete Time Systems [PDF]

open access: yes, 2001
New sufficient conditions for the Schur stability of interval matrices are provided. Moreover, a time saving version of a necessary and sufficient condition for the Schur stability of a class of interval matrices is introduced.
Rousa, Nabil S.
core   +1 more source

Appendix E. A table of transition matrices, sensitivity matrices, and lambdas for each species, population, and yearly transition interval.

open access: yes, 2016
A table of transition matrices, sensitivity matrices, and lambdas for each species, population, and yearly transition ...
Amy Lauren Angert (2914712)
core   +1 more source

Artificial Intelligence in Systemic Sclerosis: Clinical Applications, Challenges, and Future Directions

open access: yesArthritis Care &Research, EarlyView.
Systemic sclerosis (SSc) is a rare autoimmune disease defined by immune dysregulation, vasculopathy, and progressive fibrosis of the skin and internal organs. Despite advances in care, major complications such as interstitial lung disease (ILD) and myocardial involvement remain the leading causes of morbidity and mortality.
Cristiana Sieiro Santos   +2 more
wiley   +1 more source

Necessary conditions for stability of Kharitonov polynomials using characteristic polynomial of uncertain interval matrices

open access: yesSystems Science & Control Engineering
In this paper, we propose a novel method for analyzing the stability of Kharitonov polynomials by focusing on the characteristic polynomials of uncertain interval matrices of various orders.
Buddhadev Ghosh, Gargi Chakraborty
doaj   +1 more source

Classes of Interval Digraphs and 0,1-Matrices

open access: yes, 1997
We consider a hierarchy of four classes of interval digraphs, or equivalently four classes of 0,1-matrics. We provide forbidden submatrix characterizations separating the successive classes.
Douglas B. West   +2 more
core  

Race and Household Income Are Associated With Disease Outcomes in Pediatric Patients With Antineutrophil Cytoplasmic Antibody–Associated Vasculitis Hospitalized in the United States

open access: yesArthritis Care &Research, EarlyView.
Objective Race and household income impact outcomes in patients with rheumatic conditions; however, their role in pediatric antineutrophil cytoplasmic antibody (ANCA)–associated vasculitis (AAV) remains poorly understood. We aimed to evaluate whether race and ethnicity and household income are associated with severe AAV disease and renal outcomes among
Roberto Alejandro Valdovinos   +2 more
wiley   +1 more source

Intervals of almost totally positive matrices

open access: yesLinear Algebra and its Applications, 2003
The author shows that a stronger form of the total nonnegativity is preserved on matrix intervals with respect to the chequerboard partial ordering on the real nonsingular matrices. The analogous question for totally nonnegative matrices seems to remain open since 1996.
openaire   +2 more sources

Real‐World Safety and Effectiveness of JAK Inhibitors in Systemic Sclerosis: A Propensity‐Matched Study From the EUSTAR Cohort

open access: yesArthritis Care &Research, EarlyView.
Objective JAK inhibitors (JAKi) have shown promising effects in early‐phase studies of systemic sclerosis (SSc). We aimed to assess the safety and explore the effectiveness of JAKi compared to conventional immunosuppressants in SSc. Methods A longitudinal retrospective study of the European Scleroderma Trials and Research Group (EUSTAR) cohort was ...
Stefano Di Donato   +27 more
wiley   +1 more source

Eigenvalue bounds and Perron-Frobenius theory for nonnegative or positive interval matrices

open access: yes
This paper introduces two classes of regular interval matrices and establishes intervals that either include or exclude the real eigenvalues of positive interval matrices.
Singh, Sarishti, Panda, Geetanjali
core   +3 more sources

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