Results 31 to 40 of about 731,305 (291)
Single-photon detection timing jitter in a visible light photon counter [PDF]
, 2010 Visible light photon counters (VLPCs) offer many attractive features as photon detectors, such as high quantum efficiency and photon number resolution. We report measurements of the single-photon timing jitter in a VLPC, a critical performance factor in ...
Baek, Burm +5 more
core +1 more source
PLoS ONE, 2019 BACKGROUND:Packaging medications is a crucial component of health system efficiency and quality. In developing countries, medications often arrive in bulk containers that need to be counted by hand.
Paul J Krezanoski +6 more
doaj +1 more source
Scaling up cell-counting efforts in neuroscience through semi-automated methods
iScience, 2023 Summary: Quantifying how the cellular composition of brain regions vary across development, aging, sex, and disease, is crucial in experimental neuroscience, and the accuracy of different counting methods is continuously debated.
Ingvild Elise Bjerke +4 more
doaj +1 more source
High efficiency photon counting using stopped light
, 2002 Single-photon detection and photon counting play a central role in a large number of quantum communication and computation protocols. While the efficiency of state-of-the-art photo-detectors is well below the desired limits, quantum state measurements in
A. Imamoḡlu +9 more
core +1 more source
Influence of Background on Apparent Counting Efficiency in Radioactivity Analysis
He huaxue yu fangshe huaxueIn radioactivity analysis, counting efficiency(E) and background(to be precise, it should be deterministic background) are usually discussed, but apparent counting efficiency(E') and random background are rarely mentioned.
Xiao-gui FENG +4 more
doaj +1 more source
Space-Efficient Counting in Graphs on Surfaces [PDF]
computational complexity, 2009 We consider the problem of counting the number of spanning trees in planar graphs. We prove tight bounds on the complexity of the problem, both in general and especially in the modular setting. We exhibit the problem to be complete for Logspace when the modulus is 2k, for constant k.
Mark Braverman +2 more
openaire +1 more source
Measuring the absolute photo detection efficiency using photon number correlations
, 2006 We present two methods for determining the absolute detection efficiency of photon-counting detectors directly from their singles rates under illumination from a nonclassical light source.
Aytür +10 more
core +1 more source
Efficient Graphlet Counting for Large Networks [PDF]
2015 IEEE International Conference on Data Mining, 2015 From social science to biology, numerous applications often rely on graphlets for intuitive and meaningful characterization of networks at both the global macro-level as well as the local micro-level. While graphlets have witnessed a tremendous success and impact in a variety of domains, there has yet to be a fast and efficient approach for computing ...
Nesreen K. Ahmed +3 more
openaire +1 more source
Image Analysis and Stereology, 2011 In the introduction the evolution of methods for numerical density estimation of particles is presented shortly. Three pairs of methods have been analysed and compared: (1) classical methods for particles counting in thin and thick sections, (2) original
Miroslav Kališnik +3 more
doaj +1 more source
True photo-counting statistics of multiple on-off detectors
, 2012 We derive a closed photo-counting formula, including noise counts and a finite quantum efficiency, for photon number resolving detectors based on on-off detectors. It applies to detection schemes such as array detectors and multiplexing setups.
D.-G. Welsch +6 more
core +1 more source