Results 81 to 90 of about 126,888 (287)

The Right–Left WG Inverse Solutions to Quaternion Matrix Equations [PDF]

This paper studies new characterizations and expressions of the weak group (WG) inverse and its dual over the quaternion skew field. We introduce a dual to the weak group inverse for the first time in the literature and give some new characterizations ...
Dijana Mosić, Ivan Kyrchei, Predrag Stanimirović   +2 more
core   +1 more source

Nonparametric IV estimation of shape-invariant Engel curves [PDF]

, 2003
This paper concerns the identification and estimation of a shape-invariant Engel curve system with endogenous total expenditure. The shape-invariant specification involves a common shift parameter for each demographic group in a pooled system of Engel
Richard Blundell, Kristensen, D., Chen, Xiaohong, Xiaohong Chen, Blundell, R., Chen, X., Blundell, Richard W., Kristensen, Dennis, Dennis Kristensen   +8 more
core   +1 more source

Alternative algebraic perturbation expressions for the m-weak group inverse and m-weak core inverse

Filomat
This paper presents several novel algebraic perturbation formulas for the m-weak group inverse and the m-weak core inverse of a matrix A. The nonsingular matrix utilized in these formulas is contingent upon a basis for the nullspace of ( A^{k} )*, where k denotes the index of the matrix A. In
Xiaofeng Chen, YuKun Zhou
openaire   +1 more source

Pain and Patient‐Reported Physical Function Did Not Differ Among Body Composition Profiles in Patients With Hip Osteoarthritis

Arthritis Care &Research, EarlyView.
Objective To explore whether higher body fat and lower lean mass are associated with greater pain and worse patient‐reported physical function in individuals with hip osteoarthritis (OA). A secondary aim was to examine whether pain and patient‐reported physical function differ according to four body composition profiles: high body fat, low lean mass ...
Alexandra Ryan, Boliang Wang, Fiona Dobson, Ben Kirk, Travis Haber, Kim L. Bennell, Shirley P. Yu, Kim Allison, Ricardo J. S. Costa, Gabrielle Knox, Michelle Hall   +10 more
wiley   +1 more source

Anorectal Dysfunction in Systemic Sclerosis: Clinical Phenotypes and Functional Patterns

Arthritis Care &Research, EarlyView.
Objective The aim of this study was to characterize specific physiologic defects in anorectal dysfunction in systemic sclerosis (SSc) using anorectal manometry (ARM), evaluate associations with gastrointestinal (GI) and extraintestinal clinical phenotypes, and explore potential serologic markers for risk stratification.
Timothy Kaniecki, Alireza Amindarolzarbi, Tsion Abdi, John Clarke, Michael Hughes, Ami A. Shah, Zsuzsanna H. McMahan   +6 more
wiley   +1 more source

Looking for social class in all the wrong places: differences in social support emerge reliably between—but not within—class contexts

Frontiers in Psychology
Despite theorizing that cultural phenomena reflect collective processes, psychologists often analyze such phenomena at the individual level. This approach can skew conclusions by obscuring processes that unfold between—rather than within—group contexts ...
Nicholas J. Fendinger, Siyi Lou, Eric D. Knowles   +2 more
doaj   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

C*-algebras of inverse semigroups [PDF]

, 2008
Motivated by a number of important examples of C*-algebras generated by an inverse semigroup of partial isometries, we look to use the algebraic theory of inverse semigroups to describe the structure of the C*-algebras they generate.
Milan, David
core  

On The Amenability Of Inverse Semigroup Actions [PDF]

The search for an appropriate notion of amenability for inverse semigroups is an ongoing program in operator algebras. This thesis approaches this problem using inverse semigroup actions.
Gondek, Joseph Patrick Zbigniew
core   +1 more source

Inverse expression of P k and Luke blood group antigens on human RBCs [PDF]

, 2001
Luke (LKE) is a high-frequency RBC antigen, related to the P blood group system. A LKE-negative phenotype is found in 1 to 2 percent of donors and may be associated with increased P k . Because P k and similar glycolipids are receptors for shiga toxin on
Kelly, Kathleen, Kathleen Kelly, Laura L. Cooling, Cooling, Laura L.   +3 more
core   +1 more source