Results 61 to 70 of about 910,963 (262)

Attitude control precision analysis for hypersonic vehicles based on covariance analysis describing equation technique

Advances in Mechanical Engineering, 2018
This article investigates a control precision analysis based on covariance analysis describing equation technique for the generic hypersonic vehicle attitude tracking system. For a nominal generic hypersonic vehicle attitude system, a global sliding mode
Jianguo Guo, Xinming Wang, Jun Zhou
doaj   +1 more source

Local functional principal component analysis

, 2007
Covariance operators of random functions are crucial tools to study the way random elements concentrate over their support. The principal component analysis of a random function X is well-known from a theoretical viewpoint and extensively used in ...
Mas, André
core   +1 more source

PiP‐Plex: A Particle‐in‐Particle System for Multiplexed Quantification of Proteins Secreted by Single Cells

Advanced Materials, EarlyView.
Detecting proteins secreted by a single cell while retaining its viability remains challenging. A particles‐in‐particle (PiPs) system made by co‐encapsulating barcoded microparticles (BMPs) with a single cell inside an alginate hydrogel particle is introduced.
Félix Lussier, Byeong‐Ui Moon, Mojra Janta‐Polczynski, Yonatan Morocz, Fabian Svahn, Molly Shen, Ljuboje Lukic, Lidija Malic, Teodor Veres, Andy Ng, David Juncker   +10 more
wiley   +1 more source

Analysis of a Rigid-Body Pose Estimator for Relative Spacecraft Navigation

Aerospace
This study presents a rigorous error analysis of a previously published estimator that determines the single-frame relative pose of two rigid bodies from batches of point and unit vector measurements.
Caitong Peng, Daniel Choukroun
doaj   +1 more source

The hippocampal network model: A transdiagnostic metaconnectomic approach

NeuroImage: Clinical, 2018
Purpose: The hippocampus plays a central role in cognitive and affective processes and is commonly implicated in neurodegenerative diseases. Our study aimed to identify and describe a hippocampal network model (HNM) using trans-diagnostic MRI data from ...
Eithan Kotkowski, Larry R. Price, P. Mickle Fox, Thomas J. Vanasse, Peter T. Fox   +4 more
doaj   +1 more source

Multi-task Regression using Minimal Penalties [PDF]

, 2011
In this paper we study the kernel multiple ridge regression framework, which we refer to as multi-task regression, using penalization techniques. The theoretical analysis of this problem shows that the key element appearing for an optimal calibration is ...
Arlot, Sylvain, Bach, Francis, Solnon, Matthieu   +2 more
core   +6 more sources

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Functional Principal Component Analysis for Non-stationary Dynamic Time Series [PDF]

, 2018
Motivated by a highly dynamic hydrological high-frequency time series, we propose time-varying Functional Principal Component Analysis (FPCA) as a novel approach for the analysis of non-stationary Functional Time Series (FTS) in the frequency domain ...
Elayouty, Amira, Miller, Claire, Scott, Marian, Waldron, Susan   +3 more
core  

Generalization of the noise model for time-distance helioseismology

, 2014
In time-distance helioseismology, information about the solar interior is encoded in measurements of travel times between pairs of points on the solar surface. Travel times are deduced from the cross-covariance of the random wave field.
Birch, Aaron C., Fournier, Damien, Gizon, Laurent, Hohage, Thorsten   +3 more
core   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

Advanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source