Results 11 to 20 of about 174,740 (173)
Investigation and Application of Fractal Theory in Cement-Based Materials: A Review
Fractal and Fractional, 2021 Cement-based materials, including cement and concrete, are the most widely used construction materials in the world. In recent years, the investigation and application of fractal theory in cement-based materials have attracted a large amount of attention
Lei Wang +6 more
semanticscholar +1 more source
Frontiers in Human Dynamics, 2023 Although there is a growing interest in transdisciplinary knowledge co-production approaches applied to rangeland political ecology, the research paradigms and methodologies still dominating this field of research leave little room for equitable ...
Federica Ravera +4 more
doaj +1 more source
Individually optimal choices can be collectively disastrous in COVID-19 disease control
BMC Public Health, 2021 Background The word ‘pandemic’ conjures dystopian images of bodies stacked in the streets and societies on the brink of collapse. Despite this frightening picture, denialism and noncompliance with public health measures are common in the historical ...
Madison Stoddard +8 more
doaj +1 more source
Heterogeneity in Vaccinal Immunity to SARS-CoV-2 Can Be Addressed by a Personalized Booster Strategy
Vaccines, 2023 SARS-CoV-2 vaccinations were initially shown to substantially reduce risk of severe disease and death. However, pharmacokinetic (PK) waning and rapid viral evolution degrade neutralizing antibody (nAb) binding titers, causing loss of vaccinal protection.
Madison Stoddard +9 more
doaj +1 more source
Fractal and Fractional, 2021 Magnesium oxysulfate (MOS) cement is a typical eco-friendly cementitious material, which presents excellent performances. In this work, a novel multiscale modeling strategy is proposed to simulate the hydration and pore structure of MOS cement system ...
Jiasheng Huang +10 more
semanticscholar +1 more source
Assouad Dimension and Fractal Geometry [PDF]
, 2020 The Assouad dimension is a notion of dimension in fractal geometry that has been the subject of much interest in recent years. This book, written by a world expert on the topic, is the first thorough account of the Assouad dimension and its many variants
J. Fraser
semanticscholar +1 more source
Vaccines Alone Cannot Slow the Evolution of SARS-CoV-2
Vaccines, 2023 The rapid emergence of immune-evading viral variants of SARS-CoV-2 calls into question the practicality of a vaccine-only public-health strategy for managing the ongoing COVID-19 pandemic. It has been suggested that widespread vaccination is necessary to
Debra Van Egeren +7 more
doaj +1 more source
Photonic Floquet topological insulators in a fractal lattice [PDF]
Light: Science & Applications, 2020 We present Floquet fractal topological insulators: photonic topological insulators in a fractal-dimensional lattice consisting of helical waveguides. The helical modulation induces an artificial gauge field and leads to a trivial-to-topological phase ...
Zhaoju Yang +3 more
semanticscholar +1 more source
He’s frequency formula to fractal undamped Duffing equation
Journal of Low Frequency Noise Vibration and Active Control, 2021 Nonlinear oscillation is an increasingly important and extremely interesting topic in engineering. This article completely reviews a simple method proposed by Ji-Huan He and successfully establishes a fractal undamped Duffing equation through the two ...
G. Feng
semanticscholar +1 more source
Fractal derivatives, fractional derivatives and $q$-deformed calculus [PDF]
Entropy 2023, 25(7), 1008, 2023 This work presents an analysis of fractional derivatives and fractal derivatives, discussing their differences and similarities. The fractal derivative is closely connected to Haussdorff's concepts of fractional dimension geometry. The paper distinguishes between the derivative of a function on a fractal domain and the derivative of a fractal function,
arxiv +1 more source