Results 21 to 30 of about 94,173 (254)

The role of spatial configuration in multiple identity tracking.

open access: yesPLoS ONE, 2014
BackgroundThe simultaneous tracking and identification of multiple moving objects encountered in everyday life requires one to correctly bind identities to objects.
Lei Zhao   +5 more
doaj   +1 more source

Vibrational Circular Dichroism: A New Tool for the Solution-State Determination of the Structure and Absolute Configuration of Chiral Natural Product Molecules

open access: yesNatural Product Communications, 2008
Vibrational circular dichroism (VCD) has been used in recent years to determine the absolute configuration of a number of natural product chiral molecules.
Laurence A. Nafie
doaj   +1 more source

Saturation in the principal (excited) channel of four-level medium as an effective two-level configuration [PDF]

open access: yesOptica Applicata, 2021
Saturation of complex molecules affects the nonlinear processes occurring in the medium. The medium can be described by two-, three-, and four-level configurations. The principal singlet-singlet and excited triplet-triplet channels of a four-level, N-type, configuration were used to study a nonlinear medium, which was excited by radiation with two ...
openaire   +2 more sources

Three-dimensional finite element analysis of implant positioning protocols in the maxillary sinus region for zygomatic bone implantation

open access: yesKouqiang hemian waike zazhi
[Objective:] To compare the distribution characteristics of biochemical stress on two techniques of zygomatic implant (ZI), sinus slot (SS) and extra sinus (ES), in combination with conventional implants respectively, and to provide theoretical basis for
LI Jing   +4 more
doaj   +1 more source

Numerical Simulation of the Propagation of Hydraulic and Natural Fracture Using Dijkstra’s Algorithm

open access: yesEnergies, 2016
Utilization of hydraulic-fracturing technology is dramatically increasing in exploitation of natural gas extraction. However the prediction of the configuration of propagated hydraulic fracture is extremely challenging.
Yanfang Wu, Xiao Li
doaj   +1 more source

Limit Configurations of Schrödinger Systems Versus Optimal Partition for the Principal Eigenvalue of Elliptic Systems

open access: yesAdvanced Nonlinear Studies, 2019
Abstract We study a Schrödinger system of four equations with linear coupling functions and nonlinear couplings, including the case that the corresponding elliptic operators are indefinite. For any given nonlinear coupling β
Luo, Haijun, Zhang, Zhitao
openaire   +2 more sources

Non-Orthogonal Multiple Access in Multiuser MIMO Configurations via Code Reuse and Principal Component Analysis [PDF]

open access: yesElectronics, 2020
The goal of the study presented in this paper is to evaluate the performance of a proposed transmission scheme in multiuser multiple-input multiple-output (MIMO) configurations, via code reuse. Hence, non-orthogonal multiple access (NOMA) is performed.
Panagiotis K. Gkonis   +2 more
openaire   +2 more sources

An Improved Ground Control Point Configuration for Digital Surface Model Construction in a Coal Waste Dump Using an Unmanned Aerial Vehicle System

open access: yesRemote Sensing, 2020
Coal production in opencast mining generates substantial waste materials, which are typically delivered to an on-site waste dump. As a large artificial loose pile, such dumps have a special multi-berm structure accompanied by some security issues due to ...
He Ren   +4 more
doaj   +1 more source

Modification of strut effectiveness factor for reinforced concrete deep beams strengthened with CFRP laminates

open access: yesMateriales de Construccion, 2014
This paper proposes a method to modify the strut effectiveness factor in the strut-and-tie model for CFRP-strengthened reinforced concrete deep beams.
M. Panjehpour   +3 more
doaj   +1 more source

Generating a Visual Language of Performance-Driven Configurations for the Principal Façade of a Prototype Sustainable House [PDF]

open access: yesNexus Network Journal, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Home - About - Disclaimer - Privacy