Results 81 to 90 of about 302,460 (378)
Dinitrogen Activation with Low‐Valent Strontium
Angewandte Chemie, EarlyView.Although computationally predicted, N2 activation with an in situ generated low‐valent β‐diketiminate (BDI) SrI precursor did not result in a stable complex. First dinitrogen fixation with Sr was achieved using a heterobimetallic approach. This highly reducing product vigorously reacts with Teflon.
Michael Morasch +7 more
wiley +2 more sources
Spectral Properties of Oriented Hypergraphs
, 2014 An oriented hypergraph is a hypergraph where each vertex-edge incidence is given a label of $+1$ or $-1$. The adjacency and Laplacian eigenvalues of an oriented hypergraph are studied. Eigenvalue bounds for both the adjacency and Laplacian matrices of an
Reff, Nathan
core +1 more source
Laplacians and gauged Laplacians on a quantum Hopf bundle [PDF]
, 2011 This paper presents an analysis of the set of connections and covariant derivatives on a U(1) quantum Hopf bundle on the standard Podles sphere, whose total space quantum SU(2) is equipped with the 3d left covariant differential calculus by Woronowicz.
openaire +5 more sources
Micro‐ and Nano‐Bots for Infection Control
Advanced Materials, EarlyView.This review presents a strategic vision for integrating micro‐ and nanobots in the pipeline for infection diagnosis, prevention, and treatment. To develop these robots as a practical solution for infection management, their design principles are clarified based on their propulsion mechanisms and then categorized infection management domains based on ...
Azin Rashidy Ahmady +5 more
wiley +1 more source
Graph Learning From Data Under Laplacian and Structural Constraints
IEEE Journal on Selected Topics in Signal Processing, 2016 Graphs are fundamental mathematical structures used in various fields to represent data, signals, and processes. In this paper, we propose a novel framework for learning/estimating graphs from data.
Hilmi E. Egilmez +2 more
semanticscholar +1 more source
Analysis of $p$-Laplacian Regularization in Semi-Supervised Learning [PDF]
SIAM Journal on Mathematical Analysis, 2017 We investigate a family of regression problems in a semi-supervised setting. The task is to assign real-valued labels to a set of $n$ sample points, provided a small training subset of $N$ labeled points.
D. Slepčev, Matthew Thorpe
semanticscholar +1 more source
Asymptotic Laplacian-Energy-Like Invariant of Lattices [PDF]
, 2014 Let $\mu_1\ge \mu_2\ge\cdots\ge\mu_n$ denote the Laplacian eigenvalues of $G$ with $n$ vertices. The Laplacian-energy-like invariant, denoted by $LEL(G)= \sum_{i=1}^{n-1}\sqrt{\mu_i}$, is a novel topological index.
Hu, Feng-Feng +3 more
core
On the essential spectrum of the Laplacian and the drifted Laplacian
Journal of Functional Analysis, 2014 This paper concerns the $L^2$ essential spectrum of the Laplacian $ $ and the drift Laplacian $ _f$ on complete Riemannian manifolds endowed with a weighted measure $e^{-f}d\;vol_g$. We prove that the essential spectrum of the drift Laplacian $ _f$ is $[0,+\infty) $ provided the Bakry- mery curvature tensor $Ric_f$ is nonnegative and $f$ has ...
openaire +3 more sources
Advanced Materials Interfaces, EarlyView.Due to the Schiff base reaction between polyethyleneimine and glutaraldehyde in the aqueous phase, a pH‐responsive interfacial film is constructed at the interface of the two immiscible phases. Consequently, both pH‐reversible high internal phase emulsions and pH‐controlled release capsules can be easily fabricated using this emulsion system.
Lei Sun +6 more
wiley +1 more source
Laplacian integral signed graphs with few cycles
AIMS Mathematics, 2023 A connected graph with n vertices and m edges is called k-cyclic graph if k=m−n+1. We call a signed graph is Laplacian integral if all eigenvalues of its Laplacian matrix are integers.
Dijian Wang, Dongdong Gao
doaj +1 more source