Results 91 to 100 of about 9,956,543 (298)

Decomposition of H*-Algebra Valued Negative Definite Functions on Topological *-Semigroups [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2006
In the present paper, among other results, a decomposition formula is given for the w-bounded continuous negative definite functions of a topological *-semigroup S with a weight function w into a proper H*-algebra A in terms of w-bounded continuous ...
doaj  

Marachkov type stability conditions for non-autonomous functional differential equations with unbounded right-hand sides

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
Sufficient conditions for uniform equi-asymptotic stability and uniform asymptotic stability of the zero solution of the retarded equation \[x'(t) = f(t, x_t), \qquad (x_t(s):= x(t+s),\ -h\le s\le 0)\] are given.
László Hatvani
doaj   +1 more source

𝐵𝑉-functions, positive-definite functions and moment problems

open access: yes, 1975
Let S be a commutative semigroup with identity 1 and involution. A complex valued function f on S is defined to be positive definite if Π j Δ j
P. H. Maserick
core   +1 more source

Deep Learning Network‐Tailored Microenvironment Matching of 4D Bioprinting Bioactive Scaffolds for Bone Regeneration

open access: yesAdvanced Science, EarlyView.
A DLN dataset was built to analyze MABS composition versus in vitro/in vivo osteogenesis and angiogenesis. An MLP neural network, taking BG morphological parameters as input, extracts bioactive features from these datasets. A rabbit tibial defect model then validates 4D‐printed MABS for adaptability and bone regeneration in critical defects.
Xiongjie Liang   +12 more
wiley   +1 more source

ORBIT‐AMD: Ordinal Risk, Bilateral Imaging, and Trajectory Learning for Age‐Related Macular Degeneration in Multi‐Cohorts

open access: yesAdvanced Science, EarlyView.
Eligibility flow and real‐world AMD burden in the UKB retinal imaging cohort and TMUEH external‐validation cohort. Overview of the ORBIT‐AMD architecture, integrating retinal representation pretraining, bilateral eye‐graph modeling and concept bottleneck learning to support ordered risk, bilateral context, interpretable lesion concepts, longitudinal ...
Xuehao Cui   +3 more
wiley   +1 more source

Study of finite amplitude capillary waves stability

open access: yesMATEC Web of Conferences, 2018
The direct Lyapunov method is used to study capillary waves. The dynamic equations of the capillary wave are presented in the form of an infinite Euler-Lagrange chain of equations for the Stokes coefficients.
Petrov Alexander, Lopushanski Mariana
doaj   +1 more source

Integral as a certain type of a positive definite function

open access: yes, 1972
The integral with respect to an H ∗ {H^ \ast } -algebra valued measure on a compact Hausdorff space S is characterized as a certain type of positive definite function on the space C
Parfeny P. Saworotnow
core   +1 more source

Modified MXene Aerogel With Broadband Microwave Absorption Inspired by Melanophila Acuminata Beetle

open access: yesAdvanced Science, EarlyView.
This work introduces a novel biomimetic strategy inspired by the infrared‐sensing sensilla of the Melanophila acuminata beetle. We have designed a multi‐level aerogel, featuring a three‐dimensional carbon framework decorated with synergistic CeO2 nanoparticles and Ti3C2Tx MXene nanosheets.
Zhiwei Liu   +6 more
wiley   +1 more source

Criterion for Unbounded Synchronous Region in Complex Networks

open access: yesAbstract and Applied Analysis, 2013
Synchronization of complex networks has been extensively studied in many fields, where intensive efforts have been devoted to the understanding of its mechanisms.
Jin Zhou
doaj   +1 more source

Minimizing the condition number of a positive definite matrix by completion [PDF]

open access: yes, 1994
Elsner L, He C, Mehrmann V. Minimizing the condition number of a positive definite matrix by completion. Numerische Mathematik. 1994;69(1):17-23.We consider the problem of minimizing the spectral condition number of a positive definite matrix by ...
Mehrmann, Volker   +2 more
core   +1 more source

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