Results 11 to 20 of about 3,741,721 (286)
Gradient versus proper gradient homotopies [PDF]
Homology, Homotopy and Applications, 2021 We compare the sets of homotopy classes of gradient and proper gradient vector fields in the plane. Namely, we show that gradient and proper gradient homotopy classifications are essentially different. We provide a complete description of the sets of homotopy classes of gradient maps from $\mathbb{R}^n$ to $\mathbb{R}^n$ and proper gradient maps from $\
Bartłomiejczyk, Piotr +1 more
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Morphogen Gradient Formation [PDF]
Cold Spring Harbor Perspectives in Biology, 2009 How morphogen gradients are formed in target tissues is a key question for understanding the mechanisms of morphological patterning. Here, we review different mechanisms of morphogen gradient formation from theoretical and experimental points of view. First, a simple, comprehensive overview of the underlying biophysical principles of several mechanisms
Wartlick +4 more
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Integrated AI and Innovation Management: The Beginning of a Beautiful Friendship
Technology Innovation Management Review, 2020 There is a growing consensus around the transformative and innovative power of Artificial Intelligence (AI) technology. AI will transform which products are launched and how new business models will be developed to support them.
Nina Bozic Yams +4 more
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Materials Research Express, 2021 00Cr12Ni9Mo4Cu2 is an ultra- high strength, maraging stainless steel. Optical microscopy, microhardness measurement, scanning electron microscopy (SEM), and transmission electronic microscopy (TEM) were used to quantitatively investigate the effect of ...
Y Z Zhu +5 more
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The Importance of Data Reliability and Usability When Assessing Impacts of Marine Mineral Oil Spills
Toxics, 2021 Spilled mineral oils in the marine environment pose a number of challenges to sampling and analysis. Mineral oils are complex assemblages of hydrocarbons and additives, the composition of which can vary considerably depending on the source oil and ...
A. Dallas Wait
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Ambient ozone and asthma hospital admissions in Texas: a time-series analysis
Asthma Research and Practice, 2017 Background Many studies have evaluated associations between asthma emergency department (ED) visits, hospital admissions (HAs), and ambient ozone (O3) across the US, but not in Texas.
Julie E. Goodman +5 more
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Asymmetric (Hot, Warm, Cold, Cryo) Rolling of Light Alloys: A Review
Metals, 2021 Asymmetric sheet rolling is a process used when there are differences in any technological parameters in the horizontal plane across the width of the deformation zone or in the vertical plane between the top and bottom surfaces of the deformation zone ...
Denis Pustovoytov +2 more
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Hajłasz gradients are upper gradients
Journal of Mathematical Analysis and Applications, 2015 10 ...
Jiang, Renjin +3 more
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Method selection of microseismic studies depending on the problem being solved
Georesursy, 2018 The article compares two methods of microseismic studies of the maximum likelihood method and the Keipon method for detecting the position of microseismic event when observed from the surface in the conditions of the developed deposit or by monitoring ...
E.V. Biryaltsev, M.R. Kamilov
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Gradient Estimation Revitalized [PDF]
IEEE Transactions on Visualization and Computer Graphics, 2010 We investigate the use of a Fourier-domain derivative error kernel to quantify the error incurred while estimating the gradient of a function from scalar point samples on a regular lattice. We use the error kernel to show that gradient reconstruction quality is significantly enhanced merely by shifting the reconstruction kernel to the centers of the ...
Alim, Usman, R. +2 more
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