Results 61 to 70 of about 8,367,182 (364)

Sensitivity of a micromechanical displacement detector based on the radio-frequency single-electron transistor [PDF]

open access: yesAppl. Phys. Lett. 77, 3845 (2000), 2000
We investigate the tunneling shot noise limits on the sensitivity of a micromechanical displacement detector based on a metal junction, radio-frequency single-electron transistor (rf-SET). In contrast with the charge sensitivity of the rf-SET electrometer, the displacement sensitivity improves with increasing gate voltage bias and, with a suitably ...
arxiv   +1 more source

A `bright zone' in male hoverfly (Eristalis tenax) eyes and associated faster motion detection and increased contrast sensitivity [PDF]

open access: yes, 2006
Eyes of the hoverfly Eristalis tenax are sexually dimorphic such that males have a fronto-dorsal region of large facets. In contrast to other large flies in which large facets are associated with a decreased interommatidial angle to form a dorsal `acute ...
O'Carroll, David C.   +2 more
core   +2 more sources

Effects of astigmatic defocus on binocular contrast sensitivity. [PDF]

open access: yesPLoS ONE, 2018
PURPOSE:To determine the effects of astigmatism on contrast sensitivity (CS). METHODS:Eighteen normal volunteers (30.5 ± 6.0 [mean ± SD] years) were recruited. After correcting each refractive error by spectacles, against-the-rule (ATR) or with-the-rule (
Yumi Hasegawa   +4 more
doaj   +1 more source

Contrast sensitivity in images of natural scenes [PDF]

open access: yes, 2019
The contrast sensitivity function (CSF) characterizes spatial detection in the human visual system and is typically measured from simple, synthetic stimuli.
Gupta, G.   +7 more
core   +1 more source

Contrast sensitivity revealed by microsaccades.

open access: yesJournal of Vision, 2015
Microsaccades are small rapid and involuntary eye movements that occur during fixation in an apparently stochastic manner. They are known to be inhibited in response to sensory transients, with a time course that depends on the stimulus parameters and ...
Y. Bonneh, Y. Adini, U. Polat
semanticscholar   +1 more source

FoxO1 signaling in B cell malignancies and its therapeutic targeting

open access: yesFEBS Letters, EarlyView.
FoxO1 has context‐specific tumor suppressor or oncogenic character in myeloid and B cell malignancies. This includes tumor‐promoting properties such as stemness maintenance and DNA damage tolerance in acute leukemias, or regulation of cell proliferation and survival, or migration in mature B cell malignancies.
Krystof Hlavac   +3 more
wiley   +1 more source

Contrast Enhancement Using Sensitivity Model-Based Sigmoid Function

open access: yesIEEE Access, 2019
For indirect contrast enhancement, researchers have proposed various transformation functions based on histogram equalization and gamma correction.
Seung Park, Yong-Goo Shin, Sung-Jea Ko
doaj   +1 more source

Diphthamide synthesis is linked to the eEF2‐client chaperone machinery

open access: yesFEBS Letters, EarlyView.
The diphthamide modification of eukaryotic translation elongation factor 2 (eEF2) is important for accurate protein synthesis. We addressed the potential coordination of de novo eEF2 synthesis with simultaneous or subsequent diphthamide modification. Our work reveals that the co‐chaperones Hgh1 and Cpr7, which are known to support folding of nascent ...
Lars Kaduhr   +4 more
wiley   +1 more source

Factors influencing contrast sensitivity function in myopic eyes. [PDF]

open access: yesPLoS ONE, 2014
To evaluate the factors affecting the area under the log contrast sensitivity function (AULCSF) in healthy myopic eyes.We retrospectively examined 201 eyes of 201 consecutive subjects (age, 31.8 ± 7.4 years (mean ± standard deviation)) with myopic ...
Kazutaka Kamiya   +3 more
doaj   +1 more source

Confidence Level and Sensitivity Limits in High Contrast Imaging

open access: yes, 2007
In long adaptive optics corrected exposures, exoplanet detections are currently limited by speckle noise originating from the telescope and instrument optics, and it is expected that such noise will also limit future high-contrast imaging instruments for
Bruce Macintosh   +8 more
core   +1 more source

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