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The Ever-Expanding Role of C4/AC4 in Geminivirus Infection: Punching above Its Weight?

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Molecular Plant 2019年第2期12卷 145-147页

作者： vincent N. Fondong Delaware State University Department of Biological Sciences Dover DE USA

Geminiviruses (family Geminiviridae) are among the most devastating plant pathogens worldwide, causing heavy losses on food and cash crops and representing a threat to global food security and sustainability. These viruses have very compact genomes comprising one (monopartite) or two (bipartite) circular singlestranded DNA (ssDNA) molecules, each ranging from 2.6 to 2.8 kb.

关键词： C4/AC4 Geminivirus Infection DNA

Gradient descent decomposition of force-field motor primitives optogenetically elicited for motor mapping of the murine lumbosacral spinal cord

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Zoological Research 2023年第3期44卷 604-619页

作者： Paola Salmas vincent C.K Cheung School of Biomedical Sciences and Gerald Choa Neuroscience InstituteThe Chinese University of Hong KongHong Kong SARChina Kunming Institute of Zoology-The Chinese University of Hong Kong(KIZ-CUHK)Joint Laboratory of Bioresources and Molecular Research of Common Diseases Hong Kong SARChina

Generating diverse motor behaviors critical for survival is a challenge that confronts the central nervous system(CNS)of all *** movement execution,the CNS performs complex calculations to control a large number of neuromusculoskeletal *** theory of modular motor control proposes that spinal interneurons are organized in discrete modules that can be linearly combined to generate a variety of behavioral *** modules have been previously represented as stimulus-evoked force fields(FFs)comprising isometric limb-endpoint forces across workspace ***,we ask whether FFs elicited by different stimulations indeed represent the most elementary units of motor control or are themselves the combination of a limited number of even more fundamental motor *** probe for potentially more elementary modules,we optogenetically stimulated the lumbosacral spinal cord of intact and spinalized Thy1-ChR2 transgenic mice(n=21),eliciting FFs from as many single stimulation loci as possible(20-70 loci per mouse)at minimally necessary *** found that the resulting varieties of FFs defied simple categorization with just a few *** used gradient descent to further decompose the FFs into their underlying basic force fields(BFFs),whose linear combination explained FF *** mice,we identified 4-5 BFFs with partially localizable but overlapping representations along the spinal *** BFFs were structured and topographically distributed in such a way that a rostral-to-caudal traveling wave of activity across the lumbosacral spinal cord may generate a swing-to-stance gait *** BFFs may represent more rudimentary submodules that can be flexibly merged to produce a library of motor modules for building different motor behaviors.

关键词： Motor mapping Optogenetics Spinal cord Motor primitives Traveling wave

Anti-plane (SH) waves diffraction by an underground semi-circular cavity:analytical solution

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Earthquake Engineering and Engineering Vibration 2010年第3期9卷 385-396页

作者： Luo Hao vincent W. Lee Liang Jianwen HNTB Corporation Santa Ana CA 92707-8797 USA Sonny Astani Department of Civil and Environmental Engineering University of Southern California Los Angeles CA 90089-2531 USA Department of Civil Engineering Tianjin University Tianjin 300072 China

Diffraction of a two-dimensional （2D） semi-circular cavity in a half-space under incident SH-waves is studied using the classic wave function expansion method with a new de-coupling technique. This so-called ＂improved cosine half- range expansion＂ algorithm exhibits an excellent performance in reducing displacement residual errors at two rim points of concern. The governing equations are developed in a manner that minimizes the residues of the boundary conditions. Detailed derivation and analysis procedures as well as truncation of infinite linear governing equations are presented. The semi-circular cavity model presented in this paper, due to its simple profile, is expected to be used in seismic wave propagation studies as a benchmark for examining the accuracies of various analytical or numerical methods for mixed-boundary wave propagation problems.

关键词： plane SH waves diffraction, semi-circular cavity half-space improved cosine half-range expansion

Nonlinear Characteristic Analysis of Gas-Interconnected Quasi-Zero Stiffness Pneumatic Suspension System:A Theoretical and Experimental Study

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Chinese Journal of Mechanical Engineering 2024年第3期37卷 338-352页

作者： Xinwei Jiang Xing Xu Tianling Shi vincent Akolbire Atindana Automotive Engineering Research Institute Jiangsu UniversityZhenjiang 212013China

Because of significantly changed load and complex and variable driving road conditions of commercial vehicles,pneumatic suspension with lower natural frequencies is widely used in commercial vehicle suspension *** ever,traditional pneumatic suspension system is hardly to respond the greatly changed load of commercial vehicles To address this issue,a new Gas-Interconnected Quasi-Zero Stiffness Pneumatic Suspension(GIQZSPS)is presented in this paper to improve the vibration isolation performance of commercial vehicle suspension systems under frequent load *** new structure adds negative stiffness air chambers on traditional pneumatic suspension to reduce the natural frequency of the *** can adapt to different loads and road conditions by adjusting the solenoid valves between the negative stiffness air ***,a nonlinear mechanical model including the dimensionless stiffness characteristic and interconnected pipeline model is derived for GIQZSPS *** the nonlinear mechanical model of GIQZSPS system,the force transmissibility rate is chosen as the evaluation index to analyze ***,a testing bench simulating 1/4 GIQZSPS system is designed,and the testing analysis of the model validation and isolating performance is carried *** results show that compared to traditional pneumatic suspension,the GIQZSPS designed in the article has a lower natural *** the system can achieve better vibration isolation performance under different load states by switching the solenoid valves between air chambers.

关键词： Pneumatic suspension Quasi-zero stiffness system Gas-interconnected system Nonlinear dynamic modeling

Elucidating the dynamics of polymer transport through nanopores using asymmetric salt concentrations

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Nano Research 2022年第11期15卷 9943-9953页

作者： Martin Charron Lucas Philipp Liqun He vincent Tabard-Cossa Department of Physics University of OttawaOttawaON K1N 6N5Canada

While notable progress has been made in recent years both experimentally and theoretically in understanding the highly complex dynamics of polymer capture and transport through nanopores,there remains significant disagreement between experimental observation and theoretical prediction that needs to be *** salt concentrations,where the concentrations of ions on each side of the membrane are different,can be used to enhance capture rates and prolong translocation times of electrophoretically driven polymers translocating through a nanopore from the low salt concentration reservoir,which are both attractive features for single-molecule ***,since asymmetric salt concentrations affect the electrophoretic pull inside and outside the pore differently,it also offers a useful control parameter to elucidate the otherwise inseparable physics of the capture and translocation *** this work,we attempt to paint a complete picture of the dynamics of polymer capture and translocation in both symmetric and asymmetric salt concentration conditions by reporting the dependence of multiple translocation metrics on voltage,polymer length,and salt concentration *** asymmetric salt concentration conditions,we experimentally observe the predictions of tension propagation theory,and infer the significant impact of the electric field outside the pore in capturing polymers and in altering polymer conformations prior to translocation.

关键词： nanopore DNA translocation salt gradient tension propagation polymer transport

Uncertainty Analysis and Optimization of Quasi-Zero Stifness Air Suspension Based on Polynomial Chaos Method

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Chinese Journal of Mechanical Engineering 2022年第4期35卷 268-286页

作者： Xing Xu Huan Liu Xinwei Jiang Akolbire vincent Atindana Automotive Engineering Research Institute Jiangsu UniversityZhenjiang 212013China

To improve the vibration isolation performance of suspensions,various new structural forms of suspensions have been ***,there is uncertainty in these new structure suspensions,so the deterministic research cannot refect the performance of the suspension under actual operating *** this paper,a quasi-zero stifness isolator is used in automotive suspensions to form a new suspension−quasi-zero stifness air suspension(QZSAS).Due to the strong nonlinearity and structural complexity of quasi-zero stifness suspensions,changes in structural parameters may cause dramatic changes in suspension performance,so it is of practical importance to study the efect of structural parameter uncertainty on the suspension *** order to solve this problem,three suspension structural parameters d_(0),L_(0) and Pc_(0) are selected as random variables,and the polynomial chaos expansion(PCE)theory is used to solve the suspension performance *** sensitivity of the performance parameters to diferent structural parameters was discussed and analyzed in the frequency ***,a multi-objective optimization of the structural parameters d_(0),L_(0) and Pc_(0) of QZSAS was performed with the mean and variance of the root-mean-square(RMS)acceleration values as the optimization *** optimization results show that there is an improvement of about 8%−1_(0)%in the mean value and about 4_(0)%−55%in the standard deviation of acceleration(RMS)*** paper verifes the feasibility of the PCE method for solving the uncertainty problem of complex nonlinear systems,which provide a reference for the future structural design and optimization of such suspension systems.

关键词： Air suspension Quasi-zero stifness Polynomial chaos Uncertainty analysis Optimization

New Characterizations of the Dual Spaces of Hardy-amalgam Spaces

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Acta Mathematica Sinica,English Series 2022年第3期38卷 519-546页

作者： Zobo vincent de Paul ABLE Justin FEUTO Laboratoire de Mathématiques Fondamentales UFR Mathématiques et InformatiqueUniversitéFélixHouphouët-Boigny Abidjan-Cocody22B.P.582Abidjan 22Côte d’Ivoire Laboratoire de Mathématiques Fondamentales UFR Mathématiques et InformatiqueUniversitéFélixHouphouët-Boigny Abidjan-Cocody22B.P.1194Abidjan 22Côte d’Ivoire

In this paper,carrying on with our study of the Hardy-amalgam spaces H^((q,p)) and H^((q,p))_(loc)(0 详细信息

In this paper,carrying on with our study of the Hardy-amalgam spaces H^((q,p)) and H^((q,p))_(loc)(0

关键词： Amalgam spaces Hardy-amalgam spaces duality Pseudo-differential operators

Genetic Tabu Search for the Multi-Objective Knapsack Problem

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Tsinghua Science and Technology 2003年第1期8卷 8-13页

作者： vincent Barichard Jin-Kao Hao LERIA Faculty of Sciences University of AngersLERIA Faculty of Sciences University of Angers 2 Boulevard Lavoisier 49045 Angers Cedex 01 France 2 Boulevard Lavoisier 49045 Angers Cedex 01 France

We introduce a hybrid algorithm for the 01 multidimensional multi-objective knapsack problem. This algorithm, called GTS MOKP, combines a genetic procedure and a tabu search operator. The algorithm is evaluated on 9 ... 详细信息

关键词： hybrid algorithm genetic tabu search search space

After the Internet： New Technologies, Social Issues, and Public Policies

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Fudan Journal of the Humanities and Social Sciences 2017年第3期10卷 297-313页

作者： vincent Mosco Queen's University Kingston Canada

This article addresses the evolution of the Internet from a loosely organized, decentralized, and pluralistic system to the Next Internet, a tightly controlled, centralized and commodified system under corporate and government control. Drawing on a political economy perspective, it begins by addressing the technologies that comprise the Next Internet. These include Cloud Computing, Big Data Analytics, and the Internet of Things whose convergence raises significant issues in the political economy of communication and society. The paper concentrates specifically on military, environmental, economic, privacy, and labor problems. It concludes by considering the significance of viewing the Next Internet as a public utility like electricity and water.

关键词： Internet Cloud computing Big data analytics Internet of things Public utility