Results 111 to 120 of about 720,931 (344)
Measuring destination attractivity: A migration example [PDF]
The power of places to draw migrants is a topic of fundamental interest in geograhical and related social studies and also in policy circles. This paper describes and demonstrates the utility of a measure of migration attractivity which is considered ...
Wymer C +3 more
core
Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing
Advanced Engineering Materials, EarlyView.This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu +10 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov +4 more
wiley +1 more source
Global Attractivity of an Integrodifferential Model of Mutualism
, 2014 Sufficient conditions are obtained for the global attractivity of the following integrodifferential model of mutualism: , , where and , , are all positive constants.
Xiangdong Xie +3 more
semanticscholar +1 more source
The ATTRACT Trial Becomes More Attractive [PDF]
European Journal of Vascular and Endovascular Surgery, 2019 Niels, Bækgaard, Stephen, Black
openaire +2 more sources
Fostering Innovation: Streamlining Magnetocaloric Materials Research by Digitalization
Advanced Engineering Materials, EarlyView.Magnetocaloric cooling (MCE) is an environmentally friendly refrigeration method with great potential. Optimizing MCE materials involves the preparation and screening of large quantities of samples, which in turn generates a large amount of data. A digitalization approach is presented that uses ontologies, knowledge graphs, and digital workflows to ...
Simon Bekemeier +17 more
wiley +1 more source
Global attractivity for discrete models of nonautonomous logistic equations [PDF]
, 2007 Consider the following discrete model of a nonautonomous logistic equation: {N(n+1)=N(n)exp{c(n)−∑j=0mbj(n)N(n−j)},n≥0,N(0)=N0>0andN(−j)=N−j≥0,1≤j≤m, where c(n) and bj(n),0≤j≤m,n≥0 are bounded and c(n)>0,b0(n)>0,bj(n)≥0,1≤j≤m,n≥0.
Muroya, Yoshiaki
core +1 more source
Existence and global attractivity positive periodic solutions for a discrete model
Electronic Journal of Differential Equations, 2006 Using a fixed point theorem in cones, we obtain conditions that guarantee the existence and attractivity of the unique positive periodic solution for a discrete Lasota-Wazewska model.
Zheng Zhou, Zhengqiu Zhang
doaj
Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys
Advanced Engineering Materials, EarlyView.Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak +3 more
wiley +1 more source
Abstract and Applied Analysis, 2013 We consider discrete models of the form xn+1=xnf(xn−1)+hn, where hn is a nonnegative p-periodic sequence representing stocking in the population, and investigate their dynamics. Under certain conditions on the recruitment function f(x), we give a compact
Ziyad AlSharawi
doaj +1 more source