Results 41 to 50 of about 26,692 (257)
Visualization of Coalescence of Multiple Small Bubbles with Closed B-Spline Curve
International Journal of Computer Games Technology, 2020 The smoothness of surface shape is one of the key issues to simulate coalescence of underwater bubbles. In this paper, B-spline closed curve is used to realize the visual simulation of multibubble coalescence.
Fangfang Zhang, Hongjun Li
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Evaluating one-loop string amplitudes
SciPost Physics, 2023 We evaluate one-loop open-string amplitudes at finite $\alpha'$ for the first time. Our method involves a deformation of the integration contour over the modular parameter $\tau$ to a fractal contour introduced by Rademacher in the context of analytic ...
Lorenz Eberhardt, Sebastian Mizera
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Scattering amplitudes and contour deformations [PDF]
Physical Review D, 2019 We employ a scalar model to exemplify the use of contour deformations when solving Lorentz-invariant integral equations for scattering amplitudes. In particular, we calculate the onshell 2 -> 2 scattering amplitude for the scalar system. The integrals produce branch cuts in the complex plane of the integrand which prohibit a naive Euclidean ...
Gernot Eichmann +3 more
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Noise Image Segmentation Model with Adaptive Neighborhood Based on Gradient Information [PDF]
Jisuanji gongcheng, 2018 An improved active contour model is proposed to solve the problem that most of the existing segmentation model can not take into account the segmentation accuracy of the probability noise image and the inhomogeneous image.Firstly,the new neighborhood ...
LI Gang,LI Haifang,SHANG Fangxin,GUO Hao
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Two-Step Spin Forming of Thin-Walled Heads with Lateral Normal Flanged Holes
Metals, 2023 A thin-walled head with a lateral normal flanged hole is a key part of a propellant tank, and its low-cost and high-precision forming process is very challenging.
Lijun Zhu +4 more
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Siamese Tracking with Adaptive Template-Updating Strategy
Applied Sciences, 2019 Recently, we combined a contour-detection network and a fully convolutional Siamese tracking network to initialize a new start-up of vehicle tracking by clicking on the target, generating a contour proposal template instead of using a fixed bounding box.
Zheng Xu +4 more
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Convex optimization of contour deformations
Physical Review DWe discuss various formal aspects of contour deformations used to alleviate sign problems; most importantly, relating these contour deformations to a certain convex optimization problem. As a consequence of this connection we describe a general method for proving upper bounds on the average phase achievable by the contour deformation method. Using this
Scott Lawrence, Yukari Yamauchi
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Virtual and Physical Prototyping, 2021 Surface roughness of laser powder bed fusion (L-PBF) printed overhang regions is a major contributor to deteriorated shape accuracy/surface quality. This study investigates the mechanisms behind the evolution of surface roughness (Ra) in overhang regions.
Shaochuan Feng +3 more
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Reciprocal control of viral infection and phosphoinositide dynamics
FEBS Letters, EarlyView.Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
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FEBS Letters, EarlyView.Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
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