Results 51 to 60 of about 1,343 (197)
New concepts on level graphs of vague graphs with application in medicine
Frontiers in Physics, 2023 Vague graphs (VGs), belonging to the fuzzy graph (FG) family, have good capabilities when facing problems that cannot be expressed by FGs. When an element membership is unclear, neutrality is a good option that can be well-supported by a VG. The previous
Xiaolong Shi +3 more
doaj +1 more source
The SIR Model in a Moving Population: Propagation of Infection and Herd Immunity
Communications on Pure and Applied Mathematics, EarlyView.ABSTRACT In a collection of particles performing independent random walks on Zd$\mathbb {Z}^d$ we study the spread of an infection with SIR dynamics. Susceptible particles become infected when they meet an infected particle. Infected particles heal and are removed at rate ν$\nu$.
Duncan Dauvergne, Allan Sly
wiley +1 more source
Lexicographic semigroupoids. [PDF]
, 1996 The natural lexicographic semigroupoids associated with Cantor product spaces indexed by countable linear orders are classified. Applications are given to the classification of triangular operator algebras which are direct limits of upper-triangular ...
Power, Stephen C.
core
IEEE Access, 2018 Fuzzy relation inequalities composed by the min-product operation are established to model the pricing relation in a supply chain system. Basic properties of the min-product fuzzy relation inequalities are presented first, based on which the complete ...
Xuegang Zhou +4 more
doaj +1 more source
A Method to Assess Social Sustainability of Multi‐Tier Supply Chains in the Textile Industry
Corporate Social Responsibility and Environmental Management, EarlyView.ABSTRACT The EU corporate sustainability due diligence directive mandates human rights due diligence for organizations within their global supply chains. Social sustainability is highly critical in textile supply chains due to widespread poor working conditions.
Francesco Olivero +4 more
wiley +1 more source
Comparative Study of Generalized Sum Graphs via Degree-Based Topological Indices
Journal of Mathematics, 2022 In theoretical chemistry, topological indices (TIs) have important role to predict various physical and structural properties of the study under molecular graphs.
Muhammad Javaid +2 more
doaj +1 more source
Circulant Matrix‐Based Box–Behnken Designs With Economic Run Sizes
Quality and Reliability Engineering International, EarlyView.ABSTRACT We introduce Circulant Matrix‐Based Box–Behnken Designs (CBBDs), a new class of three‐level, second‐order response surface designs constructed using circulant matrix structures. These designs satisfy an enhanced orthogonal minimally aliased (OMA∗${\rm OMA}^*$) property: they retain the classical OMA property—where main effects are orthogonal ...
Tung‐Dinh Pham, Nam‐Ky Nguyen
wiley +1 more source
The chromatic number and other functions of the lexicographic product [PDF]
, 1975 The values of the chromatic and achromatic number, point- and line-connectivity, and point independence number of the lexicographic product of two graphs are examined in relation to the values of the respective parameters on the factor ...
Geller, Dennis, Stahl, Saul
core +1 more source
Outer Independent Double Italian Domination of Some Graph Products
Theory and Applications of Graphs, 2023 An outer independent double Italian dominating function on a graph $G$ is a function $f:V(G)\rightarrow\{0,1,2,3\}$ for which each vertex $x\in V(G)$ with $\color{red}{f(x)\in \{0,1\}}$ then $\sum_{y\in N[x]}f(y)\geqslant 3$ and vertices assigned $0 ...
Rouhollah Jalaei, Doost Ali Mojdeh
doaj +1 more source
Achieve Sustainability by Easing Population to 4 Billion by 2200
Sustainable Development, EarlyView.ABSTRACT The past century of massive increases in human population and resource use has seen many undesirable environmental effects, ranging from biodiversity loss to climate change. But a research gap exists, as the ultimate causes are often not described with precision or mentioned at all.
Mark Keegan +10 more
wiley +1 more source