Results 131 to 140 of about 2,863,193 (168)
Some of the next articles are maybe not open access.
A Modern Control Approach to Active Noise Control
Journal of Dynamic Systems, Measurement, and Control, 1993Active noise control systems currently in use and/or described in the research literature are typically based on adaptive signal processing theory or, equivalently, adaptive feedforward control theory. This paper presents a modern control approach to the problem of active noise cancellation in a three-dimensional space. The controller is designed based
Shoureshi, R. +3 more
openaire +1 more source
Nervous Control of Ciliary Activity
Science, 1964Electrical stimulation of the visceral ganglion of the mussel Mytilus edulis caused cilia on the lateral epithelium of the gill to beat faster. This effect was blocked by cocaine, physostigmine, hyoscyamine, and acetylcholine but not by tubocurarine. These agents did not block the cilioexcitatory effect of serotonin.
E, AIELLO, G, GUIDERI
openaire +2 more sources
Control of Leukocyte Integrin Activation
American Review of Respiratory Disease, 1993Abstract The integrin receptors on leukocytes are transiently activated by “triggering” molecules that may be other leukocyte membrane structures such as the T-cell receptor complex or small molecules such as PAF, which bind to their own specific receptors.
N, Hogg +3 more
openaire +2 more sources
Mechanisms controlling CDK9 activity
Frontiers in Bioscience, 2006This review primarily focuses on the mechanisms that modulate CDK9 activity and its recruitment to cellular genes, where it phosphorylates the C-terminal domain of RNA polymerase II (RNAPII) as well as negative elongation factors. CDK9 associates with each of four cyclins (T1, T2a, T2b and K), forming distinct positive transcription elongation factors (
Renee M, Marshall, Xavier, Grana
openaire +2 more sources
Electromagnetically controllable osteoclast activity
Bone, 2014The time-varying electromagnetic field (EMF) has been widely studied as one of the exogenous stimulation methods for improving bone healing. Our previous study showed that osteogenic differentiation of adipose-derived stem cells was accelerated by a 45-Hz EMF, whereas a 7.5-Hz EMF inhibited osteogenic marker expression.
Hong, JM +4 more
openaire +3 more sources
Active Control of Bias for the Control of Posture and Movement
Journal of Neurophysiology, 2010Posture and movement are fundamental, intermixed components of motor coordination. Current approaches consider either that 1) movement is an active, anticipatory process and posture is a passive feedback process or 2) movement and posture result from a common passive process.
openaire +3 more sources
Active continuous quality control
Proceedings of the 16th International ACM Sigsoft symposium on Component-based software engineering, 2013We present Active Continuous Quality Control (ACQC), a novel approach that employs incremental active automata learning technology periodically in order to infer evolving behavioral automata of complex applications accompanying the development process.
Stephan Windmüller +4 more
openaire +1 more source
On the controllability of activated sludge plants
2020 European Control Conference (ECC), 2020In this work, the full-state controllability properties of a biological wastewater treatment plant are analysed. Specifically, the five biological reactors in the Benchmark Simulation Model no. 1 are studied. For the task, we represented the activated sludge plant as a dynamical system consisting of 65 states, 7 controls and 27 disturbances as a ...
Neto, Otacilio B.L. +3 more
openaire +1 more source
Optimal Control of Neuronal Activity
Physical Review Letters, 2003We investigate the optimal control of neuronal spiking activity for neurons receiving a class of random synaptic inputs, characterized by a positive parameter alpha. Optimal control signals and optimal variances are found exactly for the diffusion process approximating an integrate and fire model.
Jianfeng, Feng, Henry C, Tuckwell
openaire +2 more sources
Active control of mechanical vibrations
Bell Labs Technical Journal, 2009Recent advances in digital signal processing and actuation technology have opened the door to applying active control to reducing mechanical vibrations and acoustic noise. Because these techniques work best at lower frequency, they complement conventional passive damping techniques, which are most effective at higher frequencies.
Roger D. Benning +2 more
openaire +1 more source