Results 111 to 120 of about 51,215 (304)

3D saddle point detection and applications in cardiac imaging [PDF]

, 2012
We investigate saddle points in 3D cardiac images. We do so by improving a critical point detection algorithm, the 3D winding number, or Poincare index. We consider two different applications.
Fuster, Andrea, R. F. P. van Pelt, A. Fuster, B. M. ter Haar Romeny, Romeny, Bart M. ter Haar, Florack, Luc, Claassen, Geert, Assen, Hans C. van, R. H. J. Fick, Fick, Rutger H.J., H. C. van Assen, L. M. J. Florack, Pelt, Roy van, G. Claassen   +13 more
core   +1 more source

Existence of traveling waves for diffusive-dispersive conservation laws

Electronic Journal of Differential Equations, 2013
In this work we show the existence existence and uniqueness of traveling waves for diffusive-dispersive conservation laws with flux function in $C^{1}(mathbb{R})$, by using phase plane analysis.
Cezar I. Kondo, Alex F. Rossini
doaj  

H_∞ Robust Optimal Control of the Second-Order Descriptor System

IEEE Access
This paper investigates the $H_{\infty }$ robust optimal control problem for second-order descriptor continuous-time systems over an infinite time horizon by employing a differential game approach focusing on saddle-point equilibrium.
Shuo Cheng, Xin Zhang, Wenxin Yao, Chengke Zhang   +3 more
doaj   +1 more source

An accelerated minimax algorithm for convex-concave saddle point problems with nonsmooth coupling function. [PDF]

Comput Optim Appl, 2023
Boţ RI, Csetnek ER, Sedlmayer M.
europepmc   +1 more source

Saddle point theorems on generalized convex spaces

Journal of Inequalities and Applications, 2000
A sharpened extension of Komiya's saddle point theorem is obtained for generalized convex spaces. Moreover, we show that convexity of the involved sets in his theorem can be replaced by acyclicity, and continuity of the involved functions by lower and ...
Park Sehie, Kim In-sook
doaj  

Field-Theoretic Simulations for Block Copolymer Melts Using the Partial Saddle-Point Approximation. [PDF]

Polymers (Basel), 2021
Matsen MW, Beardsley TM.
europepmc   +1 more source

FAILURE OF SADDLE-POINT METHOD IN THE PRESENCE OF DOUBLE DEFAULTS [PDF]

We show that the saddle-point approximation method to quantify the impact of undiversi?ed idiosyncratic risk in a credit portfolio is inappropriate in the presence of double default effects.
Eva Lütkebohmert
core  

Saddle point approximation of Rice's formula [PDF]

, 2005
The saddle point approximation of Rice's formula for the upcrossing rate of a stationary random process has until now only been informally studied. We formulate and prove a formal theorem which gives the first two terms in the saddle point expansion and ...
Hagberg, Oskar
core  

SADDLE POINT VARIATIONAL METHOD FOR DIRAC CONFINEMENT [PDF]

Journal of Sciences, Islamic Republic of Iran, 2001
A saddle point variational (SPV ) method was applied to the Dirac equation as an example of a fully relativistic equation with both negative and positive energy solutions.
doaj  

Dirac cone, flat band and saddle point in kagome magnet YMn₆Sn₆. [PDF]

Nat Commun, 2021
Li M, Wang Q, Wang G, Yuan Z, Song W, Lou R, Liu Z, Huang Y, Liu Z, Lei H, Yin Z, Wang S.   +11 more
europepmc   +1 more source