Results 21 to 30 of about 97,347 (130)
Developmental Dynamics, Volume 250, Issue 9, Page 1300-1317, September 2021., 2021 Abstract Background In vertebrates, the skull evolves from a complex network of dermal bones and cartilage—the latter forming the pharyngeal apparatus and the chondrocranium. Squamates are particularly important in this regard as they maintain at least part of the chondrocranium throughout their whole ontogeny until adulthood.
Oleksandr Yaryhin +4 more
wiley +1 more source
A unified single-loop alternating gradient projection algorithm for nonconvex–concave and convex–nonconcave minimax problems [PDF]
Mathematical programming, 2020 Much recent research effort has been directed to the development of efficient algorithms for solving minimax problems with theoretical convergence guarantees due to the relevance of these problems to a few emergent applications. In this paper, we propose
Zi Xu +3 more
semanticscholar +1 more source
Crashworthiness and optimization of novel concave thin-walled tubes
Composite structures, 2021 In this work, a new type of energy-absorbing thin-walled tubes with concave angles is proposed by a unique structural design method to improve the crashworthiness performance of the traditional hexagonal thin-walled tube (TH).
Jianbo Chen +4 more
semanticscholar +1 more source
Efficient Search of First-Order Nash Equilibria in Nonconvex-Concave Smooth Min-Max Problems [PDF]
SIAM Journal on Optimization, 2020 We propose an efficient algorithm for finding first-order Nash equilibria in min-max problems of the form $\min_{x \in X}\max_{y \in Y} F(x,y)$, where the objective function is smooth in both variables and concave with respect to $y$; the sets $X$ and $Y$
Dmitrii Ostrovskii +2 more
semanticscholar +1 more source
Alternating Proximal-Gradient Steps for (Stochastic) Nonconvex-Concave Minimax Problems [PDF]
SIAM Journal on Optimization, 2020 Minimax problems of the form $\min_x \max_y \Psi(x,y)$ have attracted increased interest largely due to advances in machine learning, in particular generative adversarial networks. These are typically trained using variants of stochastic gradient descent
R. Boț, A. Böhm
semanticscholar +1 more source
GEOMETRIC REDESIGN OF THE SUBDIVIDED SURFACE OF CC II: APPLICATION IN ARCHITECTURE
Journal of Industrial Design and Engineering Graphics, 2019 The concave polyhedral surface of CC II can be used as a structural template for architectural design of domes, roofs or other covering or stand-alone structures.
Marija Obradovic
doaj +4 more sources
Nearly unbiased variable selection under minimax concave penalty [PDF]
, 2010 We propose MC+, a fast, continuous, nearly unbiased and accurate method of penalized variable selection in high-dimensional linear regression. The LASSO is fast and continuous, but biased.
Cun-Hui Zhang
semanticscholar +1 more source
A Primal-Dual Algorithm with Line Search for General Convex-Concave Saddle Point Problems
SIAM Journal on Optimization, 2020 In this paper, we propose a primal-dual algorithm with a novel momentum term using the partial gradients of the coupling function that can be viewed as a generalization of the method proposed by Chambolle and Pock in 2016 to solve saddle point problems ...
E. Y. Hamedani, N. Aybat
semanticscholar +1 more source
The Scientific World Journal, Volume 2014, Issue 1, 2014., 2014 To explore the potential of in vitro rapid regeneration, three varieties (Golpaygan‐181, Orumieh‐1763, and Gorgan‐1601) of sainfoin (Onobrychis viciifolia Scop. syn. Onobrychis sativa L.) were evaluated. For the first time, an encapsulation protocol was established from somatic embryogenic callus in torpedo and cotyledonary stages to create artificial ...
Sadegh Mohajer +4 more
wiley +1 more source
, 2022 AMEROTYPHLOPS MARTIS SP. NOV. (FIG. 12; SUPPORTING INFORMATION, FIGS S5, S 6) Z o o b a n k r e g i s t r a t i o n: u r n: l s i d: z o o b a n k. org:act: 0FDB6570-F072-4B5E-BE52-0BF93785AC88 Holotype: An adult male, MNRJ 18744, collected by Ana ...
Pinto, Roberta R. +9 more
core +1 more source