Results 61 to 70 of about 406,966 (316)

Vibration Boundary Control for a One-Dimensional Flexible Beam System With Restricted Input

IEEE Access, 2018
This paper studies a boundary control problem of a 1-D flexible beam. The objective is to design an efficient boundary controller to suppress the undesired vibration of the 1-D flexible beam with restricted input. A novel boundary controller is developed
Zhijia Zhao, Yonghao Ma, Zhigang Ren, Chunming Tang, Guilin Wen   +4 more
doaj   +1 more source

Boundary Controllability and Observability of a Viscoelastic String [PDF]

SIAM Journal on Control and Optimization, 2012
In this paper we consider an integrodifferential system, which governs the vibration of a viscoelastic one-dimensional object. We assume that we can act on the system at the boundary and we prove that it is possible to control both the position and the velocity at every point of the body and at a certain time $T$, large enough.
LORETI, Paola, L. Pandolfi, SFORZA, Daniela   +2 more
openaire   +3 more sources

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Second-order analysis of a boundary control problem for the viscous Cahn–Hilliard equation with dynamic boundary condition [PDF]

, 2014
In this paper we establish second-order sufficient optimality conditions for a boundary control problem that has been introduced and studied by three of the authors in a previous contribution.
Gilardi, Gianni, Farshbaf Shaker, Mohammad Hassan, COLLI, PIERLUIGI, GILARDI, GIANNI MARIA, Sprekels, Jürgen, M. Hassan Farshbaf Shaker, Jürgen Sprekels   +6 more
core   +1 more source

Boundary Control for Consensus in Fractional-Order Multi-Agent Systems Under DoS Attacks and Actuator Failures

Fractal and Fractional
This paper investigates the consensus problem in fractional-order multi-agent systems (FOMASs) under Denial of Service (DoS) attacks and actuator faults.
Qiang Qi, Xiao Chen, Dejian Wang, Jiashu Dai, Yuqian Yang, Chengdong Yang   +5 more
doaj   +1 more source

Vibration Control for a Flexible Timoshenko Arm Subject to Constrained Input

IEEE Access, 2019
This paper copes with the vibration reduction and angle positioning issues of a flexible Timoshenko arm system by developing a boundary vibration control strategy. Considering the influence of nonlinear input constraints, constrained boundary controllers
Xiuyu He, Zhijia Zhao
doaj   +1 more source

Controllability for a Wave Equation with Moving Boundary [PDF]

Journal of Applied Mathematics, 2014
We investigate the controllability for a one-dimensional wave equation in domains with moving boundary. This model characterizes small vibrations of a stretched elastic string when one of the two endpoints varies. When the speed of the moving endpoint is less than1-1/e, by Hilbert uniqueness method, sidewise energy estimates method, and multiplier ...
Lizhi Cui, Libo Song
openaire   +3 more sources

Biophysical approaches for studying viral entry

FEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

Stabilization of laminated beams with interfacial slip

Electronic Journal of Differential Equations, 2015
We study a laminated beam consisting of two identical beams of uniform thickness, which is modeled as Timoshenko beams. An adhesive of small thickness is bonding the two layers and creating a restoring force producing a damping. It has been shown that
Assane Lo, Nasser-eddine Tatar
doaj  

Rab14 regulates the transport of human papillomavirus to the trans‐Golgi network for infectious cell entry

FEBS Letters, EarlyView.
This study reveals that the small GTPase Rab14 is necessary for human papillomavirus (HPV) infection and plays an essential role in the transport of virions to the trans‐Golgi network (TGN). HPV in the early endosome (EE), which harbors GTP‐bound Rab14, is transported to the TGN through the switch of Rab14 from its GTP‐bound to GDP‐bound form.
Yoshiyuki Ishii, Iwao Kukimoto
wiley   +1 more source