Results 41 to 50 of about 1,644,648 (291)

Single-Electron Tunneling with Strong Mechanical Feedback [PDF]

open access: yesPhysical Review Letters, 2004
Changed to an ...
Blanter, Ya.M. (author)   +2 more
openaire   +4 more sources

Solving the angular momentum problem in the cold feedback mechanism of cooling flows

open access: yes, 2010
We show that cold clumps in the intra--cluster medium (ICM) efficiently lose their angular momentum as they fall in, such that they can rapidly feed the central AGN and maintain a heating feedback process.
Pizzolato, Fabio, Soker, Noam
core   +1 more source

Stock Price Dynamics and Option Valuations under Volatility Feedback Effect [PDF]

open access: yes, 2012
According to the volatility feedback effect, an unexpected increase in squared volatility leads to an immediate decline in the price-dividend ratio.
Kanniainen, Juho, Piché, Robert
core   +2 more sources

Stress Sensors Driving a Feedback Mechanism for the Prediction of Paraspinal Muscle Forces during Upright Stance Posture

open access: yesJournal of Biomechanical Science and Engineering, 2008
For stability analysis of the lumbar spine, a hypothesis is presented that the disc has stress sensors driving a feedback mechanism which can react to the imposed loads by adjusting the contraction of muscles.
YoungEun KIM, SooTaek KIM
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Structural Time Series Models with Feedback Mechanisms [PDF]

open access: yesBiometrics, 2000
Summary.Structural time series models have applications in many different fields such as biology, economics, and meteorology. A structural time series model can be represented as a state‐space model where the states of the system represent the unobserved components and the structural parameters have clear interpretations.
Guo, Wensheng, Brown, Morton B.
openaire   +3 more sources

Mechanical Feedback Linearization of Single-Input Mechanical Control Systems

open access: yesIEEE Transactions on Automatic Control, 2023
We present a new type of feedback linearization that is tailored for mechanical control systems. We call it a mechanical feedback linearization. Its basic feature is preservation of the mechanical structure of the system. For mechanical systems with a scalar control, we formulate necessary and sufficient conditions that are verifiable using ...
Marcin Nowicki, Witold Respondek
openaire   +2 more sources

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Mechanically tunable optofluidic distributed feedback dye laser [PDF]

open access: yesOptics Express, 2006
A continuously tunable optofluidic distributed feedback (DFB) dye laser was demonstrated on a monolithic replica molded poly(dimethylsiloxane) (PDMS) chip. The optical feedback was provided by a phase-shifted higher order Bragg grating embedded in the liquid core of a single mode buried channel waveguide. Due to the soft elastomeric nature of PDMS, the
Li, Zhenyu   +3 more
openaire   +3 more sources

The role and implications of mammalian cellular circadian entrainment

open access: yesFEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

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