Results 31 to 40 of about 703,458 (267)

Optimality Conditions for Nonconvex Multistate Control Problems in the Coefficients [PDF]

SIAM Journal on Control and Optimization, 2004
The purpose of this paper is to attain some optimality conditions for the identification of a diffusion matrix (material) under several restrictions. Assuming that the set of such diffusion matrices is closed for the H-convergence, we give a method to obtain admissible directions which applies to a not-necessarily convex control set. Our results permit
Casado Díaz, Juan, Couce Calvo, Julio, Martín Gómez, José Domingo   +2 more
openaire   +4 more sources

Intraoperative Collection of Ascitic Fluid With Intra‐ or Postoperative Reinfusion in Ovarian Cancer: Safety and Feasibility of a Roller Pumping Method

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Patients with ovarian cancer often present with massive ascites, leading to significant protein loss during surgical procedures. Although cell‐free concentrated ascites reinfusion therapy (CART) is used in palliative settings to mitigate protein loss, its application in intraoperative settings remains unexplored.
Yutaka Yoneoka, Tsukuru Amano, Akimasa Takahashi, Mari Deguchi, Hiroyuki Yamanaka, Yuji Tanaka, Shunichiro Tsuji, Takashi Murakami   +7 more
wiley   +1 more source

IG-LSPIA: Least Squares Progressive Iterative Approximation for Isogeometric Collocation Method

Mathematics, 2023
The isogeometric collocation method (IGA-C), which is a promising branch of isogeometric analysis (IGA), can be considered fitting the load function with the combination of the numerical solution and its derivatives.
Yini Jiang, Hongwei Lin
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Adaptive Control and Estimation of the Condition of a Small Unmanned Aircraft Using a Kalman Filter

Energies, 2021
The article was motivated by the design of adaptive control algorithms for the control of a a fixed wing unmanned aerial vehicle (UAV). An adaptive system is a system that, with its structure or parameters, adapts to changes in the behavior of the object
Dávid Megyesi, Róbert Bréda, Martin Schrötter   +2 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Study of cooking coefficient of five toxic metals in marine fish in China

Zhongguo shipin weisheng zazhi, 2022
ObjectiveTo provide data basis for improving the accuracy of food safety risk assessment in China， the cooking coefficients of five toxic metals in marine fish was studied.MethodsBased on the consumption of 19 kinds of marine fish in Guangdong province ...
CAO Pei, CHEN Zihui, MAO Weifeng, HUANG Rui, ZHOU Pingping, WANG Ping, BAO Huihui, ZHANG Lei   +7 more
doaj   +1 more source

Gini coefficients for measuring the distribution of sexually transmitted infections among individuals with different levels of sexual activity [PDF]

PeerJ, 2020
Objectives Gini coefficients have been used to describe the distribution of Chlamydia trachomatis (CT) infections among individuals with different levels of sexual activity. The objectives of this study were to investigate Gini coefficients for different
Sandro Gsteiger, Nicola Low, Pam Sonnenberg, Catherine H. Mercer, Christian L. Althaus   +4 more
doaj   +2 more sources

Control in the coefficients of an obstacle problem

Mathematical Control and Related Fields
In this work, we consider optimality conditions of an optimal control problem governed by an obstacle problem. Here, we focus on introducing a, matrix valued, control variable as the coefficients of the obstacle problem. As it is well known, obstacle problems can be formulated as a complementarity system and consequently the associated solution ...
Simon, Nicolai, Wollner, Winnifried
openaire   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source