Results 61 to 70 of about 11,420,922 (288)
Nonlinear first-order periodic boundary-value problems of impulsive dynamic equations on time scales
Electronic Journal of Differential Equations, 2012 By using the fixed point theorem in cones, in this paper, existence criteria for single and multiple positive solutions to a class of nonlinear first-order periodic boundary value problems of impulsive dynamic equations on time scales are obtained. An
Wen Guan, Dun-Gang Li, Shuang-Hong Ma
doaj
Arriving on time: estimating travel time distributions on large-scale road networks
, 2013 Most optimal routing problems focus on minimizing travel time or distance traveled. Oftentimes, a more useful objective is to maximize the probability of on-time arrival, which requires statistical distributions of travel times, rather than just mean ...
Abbeel, Pieter +7 more
core +1 more source
Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
wiley +1 more source
A Finite Time Analysis of Two Time-Scale Actor Critic Methods
, 2020 Actor-critic (AC) methods have exhibited great empirical success compared with other reinforcement learning algorithms, where the actor uses the policy gradient to improve the learning policy and the critic uses temporal difference learning to estimate ...
Gu, Quanquan +3 more
core
Large Scale Spectral Clustering Using Approximate Commute Time Embedding
, 2012 Spectral clustering is a novel clustering method which can detect complex shapes of data clusters. However, it requires the eigen decomposition of the graph Laplacian matrix, which is proportion to $O(n^3)$ and thus is not suitable for large scale ...
C. Fowlkes +10 more
core +1 more source
Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions
FEBS Letters, EarlyView.We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva +10 more
wiley +1 more source
Conformable fractional Dirac system on time scales
Journal of Inequalities and Applications, 2017 We study the conformable fractional (CF) Dirac system with separated boundary conditions on an arbitrary time scale T $\mathbb{T}$ . Then we extend some basic spectral properties of the classical Dirac system to the CF case.
Tuba Gulsen, Emrah Yilmaz, Sertac Goktas
doaj +1 more source
Random integral equations on time scales [PDF]
Opuscula Mathematica, 2013 In this paper, we present the existence and uniqueness of random solution of a random integral equation of Volterra type on time scales. We also study the asymptotic properties of the unique random solution.
Vasile Lupulescu, Cristina Lungan
doaj +1 more source
Asymptotic self-similar solutions with a characteristic time-scale
, 2010 For a wide variety of initial and boundary conditions, adiabatic one dimensional flows of an ideal gas approach self-similar behavior when the characteristic length scale over which the flow takes place, $R$, diverges or tends to zero.
Barenblatt +12 more
core +1 more source
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source