Results 131 to 140 of about 144,122 (300)

Fractal dimension versus density of the built-up surfaces in the periphery of Brussels. [PDF]

open access: yes
This paper aims at showing the usefulness of the fractal dimension for characterizing the spatial structure of the built-up surfaces within the periurban fringe.
Marie-Laurence Dekeersmaecker   +2 more
core  

Temperature–strain decoupled electronic skin for human–machine interaction

open access: yesInfoMat, EarlyView.
Temperature fluctuations can cause signal drift in wearable strain sensors, interfering with human‐motion monitoring. This study integrates a serpentine strain sensor with a miniature thermistor and uses a temperature–strain calibration model to compensate for temperature‐induced resistance changes in real time, suppressing thermal drift while ...
Miao Kong   +19 more
wiley   +1 more source

Analysis of the effect of COVID‐19 on crude oil and agricultural commodity market relationships

open access: yesJournal of the Agricultural and Applied Economics Association, EarlyView.
Abstract This study examines the COVID‐19 pandemic's effect on relationships between crude oil and agricultural commodity markets. Using a Time‐Varying Parameter Vector Autoregressive model, we find strong volatility transmission, with Brent, WTI, corn, and soybean prices acting as net shock transmitters, while cotton and wheat are net receivers ...
Derick Adu   +2 more
wiley   +1 more source

Duality Revelation and Operator-Based Method in Viscoelastic Problems

open access: yesFractal and Fractional
Viscoelastic materials are commonly used in civil engineering, biomedical sciences, and polymers, where understanding their creep and relaxation behaviors is essential for predicting long-term performance.
Zelin Liu, Xiaobin Yu, Yajun Yin
doaj   +1 more source

Fractal model for evaluating heat transfer of high temperature porous corundum shell in vacuum investment casting [PDF]

open access: yesChina Foundry, 2006
Under vacuum, heat transfer in porous corundum shell of investment casting depends on the characteristics of the solid materials and the spatial arrangement of solids and pores.
WAN Xin, XU Cheng-hai, FENG Wen-gang
doaj  

Looking at Soil as It Is: Evolution of Microscopic Soil Characterization From Kubiëna to Artificial Intelligence

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView.
We provide a historic overview of microscopic soil structure characterization from its founding father, Walter Kubiëna, to several technical revolutions like automation, digitalization, and artificial intelligence. In addition to technical advancements, we explore how concepts and research questions have evolved in time.
Steffen Schlüter   +3 more
wiley   +1 more source

Topological and Fractal Analysis of Nanostructured Metal–Dielectric Films

open access: yesApplied Sciences
The surface topology and fractal dimension of ultrathin silver and gold films have been investigated utilizing atomic force microscopy. These films were formed at the early stages of metal deposition through thermal evaporation and have pre-percolation ...
Ivan Bolesta   +5 more
doaj   +1 more source

Conjunto Instrumental Fractal, ensamble instrumental (Colombia)

open access: yes, 2009
Concierto interpretado por el Conjunto Instrumental Fractal. Esta agrupación nació en la Escuela de Música de Comfenalco Quindío en 1999, bajo la dirección del maestro Héctor Fabio Torres Cardona, y forman parte del proyecto música de cámara en cuerdas ...
Conjunto Instrumental Fractal - Ensamble instrumental (Colombia)
core  

Linking Ecosystem Risk, Health, Services to Ecological Security Assessment in the Yellow River Basin: Spatiotemporal Dynamics and Nonlinear Driving Characteristics

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT A scientific assessment of ecological security (ES) and its nonlinear mechanism for key driving factors in the Yellow River Basin (YRB) is of great significance for ecological protection and sustainable development. This study proposes an ES assessment framework, which links ecosystem risk (ER), ecosystem health (EH), and ecosystem services ...
Menghao Yang   +3 more
wiley   +1 more source

Multi‐Objective Spatial Optimization of Cropland Layouts in Highly Urbanized Regions: Evidence From Dongguan, China

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Cropland protection in highly urbanized regions requires reconciling stable quantitative‐qualitative targets with the functional optimization of extremely fragmented spatial structures. This study develops a patch‐level multi‐objective spatial reconfiguration framework of cropland layouts based on the Non‐dominated Sorting Genetic Algorithm‐II
Zhibang Luo, Bowen Zhang, Dianfeng Liu
wiley   +1 more source

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