Results 71 to 80 of about 6,421 (176)
Integrating amyloid imaging and genetics for early risk stratification of Alzheimer's disease
Alzheimer's &Dementia, Volume 20, Issue 11, Page 7819-7830, November 2024.Abstract INTRODUCTION Alzheimer's disease (AD) initiates years prior to symptoms, underscoring the importance of early detection. While amyloid accumulation starts early, individuals with substantial amyloid burden may remain cognitively normal, implying that amyloid alone is not sufficient for early risk assessment.
Bing He +11 more
wiley +1 more source
Ecological Monographs, Volume 94, Issue 4, November 2024.Abstract Forests are critical to water resources, but high evapotranspiration (ET) can reduce water yield. Thinning and prescribed fire reduce forest density and often reduce ET, promoting higher water yield. However, results from such treatments have been inconsistent, possibly because of unknown interactions among individual ET components. We compare
Steven T. Brantley +3 more
wiley +1 more source
A Strong Regular Relation on ?-Semihyperrings [PDF]
Journal of Sciences, Islamic Republic of Iran, 2011 The concept of algebraic hyperstructures introduced by Marty as a generalization of ordinary algebraic structures. In an ordinary algebraic structure, the composition of two elements is an element, while in an algebraic hyperstructure, the composition of
B Davaz
doaj
Journal of Algebra, 2001 A commutative semiring \(S\) is congruence-simple if and only if one of the following six cases holds: (1) the two-element semirings (which are not listed below), (2) the semiring \(V(G)\) where \(G\) is a multiplicative Abelian group, \(V(G)=G\cup\{0\}\), \(0x=0=x0\), \(x+x=x\), \(x+y=0\) for \(x\neq y\), (3) the semiring \(W(A)\) for any subsemigroup
El Bashir, R +3 more
openaire +2 more sources
Universal quadratic forms and Northcott property of infinite number fields
Journal of the London Mathematical Society, Volume 110, Issue 5, November 2024.Abstract We show that if a universal quadratic form exists over an infinite degree, totally real extension of the field of rationals Q$\mathbb {Q}$, then the set of totally positive integers in the extension does not have the Northcott property. In particular, this implies that no universal form exists over the compositum of all totally real Galois ...
Nicolas Daans +2 more
wiley +1 more source
New Phytologist, Volume 241, Issue 1, Page 114-130, January 2024.Summary The Mediterranean alpine is one of the most vulnerable ecosystems under future environmental change. Yet, patterns, timing and environmental controls of plant growth are poorly investigated. We aimed at an improved understanding of growth processes, as well as stem swelling and shrinking patterns, by examining two common coexisting green ...
Eike Corina Albrecht +3 more
wiley +1 more source
Advances in Civil Engineering, Volume 2024, Issue 1, 2024.By relying on the foundation engineering of pile foundations for the Chengdu Metro Line 27 shield tunneling through interchange bridges, three‐dimensional numerical simulation results are used to verify field measurements. This study investigates the horizontal displacement, vertical displacement, and stress characteristics of the pile foundation ...
Yanpeng Du +3 more
wiley +1 more source
Finiteness conditions for graph algebras over tropical semirings [PDF]
, 2014 Connection matrices for graph parameters with values in a field have been introduced by M. Freedman, L. Lov{\'a}sz and A. Schrijver (2007). Graph parameters with connection matrices of finite rank can be computed in polynomial time on graph classes of ...
A. Makowsky, Johann, Nadia Labai
core
, 1998 This article has been published in the proceedings of the "Idempotency" conference, organized by Jeremy Gunawardena in Bristol in october 1994. The aim of this paper is to present the tropical semirings and to survey a few problems relevant to them.
openaire +2 more sources
Ordered Left Almost ⋇‐Semihypergroups Based on Fuzzy Sets
Journal of Mathematics, Volume 2024, Issue 1, 2024.The concept of an involution or anti‐involution is a self‐inverse linear mapping that plays a prominent role in the theory of algebraic structures, particularly rings, hyperrings, ordered semigroups, and ordered semihypergroups. Nowadays, the study of involutions in ordered hyperstructures is a particular area of research in the field of hyperstructure
Nabilah Abughazalah +2 more
wiley +1 more source