scholarly journals Model of qubits as devices to detect the third moment of current fluctuations

2006 ◽  
Vol 74 (2) ◽  
Author(s):  
Valentina Brosco ◽  
Rosario Fazio ◽  
F. W. J. Hekking ◽  
J. P. Pekola
Keyword(s):  
Current Fluctuations ◽  
The Third ◽  
Third Moment

Monte Carlo Algorithms for Moments of Transition Arrays

1988 ◽  
Vol 102 ◽  
pp. 79-81
Author(s):  
A. Goldberg ◽  
S.D. Bloom
Keyword(s):  
Monte Carlo ◽  
State Vector ◽  
Basis Vector ◽  
Collective State ◽  
Dispersion Characteristics ◽  
Dipole Strength ◽  
The Third ◽  
Monte Carlo Algorithms ◽  
Third Moment ◽  
Very High

AbstractClosed expressions for the first, second, and (in some cases) the third moment of atomic transition arrays now exist. Recently a method has been developed for getting to very high moments (up to the 12th and beyond) in cases where a “collective” state-vector (i.e. a state-vector containing the entire electric dipole strength) can be created from each eigenstate in the parent configuration. Both of these approaches give exact results. Herein we describe astatistical(or Monte Carlo) approach which requires onlyonerepresentative state-vector |RV> for the entire parent manifold to get estimates of transition moments of high order. The representation is achieved through the random amplitudes associated with each basis vector making up |RV>. This also gives rise to the dispersion characterizing the method, which has been applied to a system (in the M shell) with≈250,000 lines where we have calculated up to the 5th moment. It turns out that the dispersion in the moments decreases with the size of the manifold, making its application to very big systems statistically advantageous. A discussion of the method and these dispersion characteristics will be presented.

The significance of the third moment in the apparent size method

2000 ◽  
Vol 31 ◽  
pp. 408-409
Author(s):  
Lu Zhang ◽  
R. Bahreini ◽  
J.W. Gentry
Keyword(s):  
Apparent Size ◽  
The Third ◽  
Third Moment

The Assessment of Nocturnal Oxygen Saturation

1983 ◽  
Vol 65 (5) ◽  
pp. 507-513
Author(s):  
C. I. Meanock ◽  
A. R. Guyatt ◽  
G. Cumming
Keyword(s):  
Oxygen Saturation ◽  
Air Flow ◽  
Digital Processing ◽  
Moment Analysis ◽  
Good Reproducibility ◽  
The Third ◽  
Simple Index ◽  
The Mean ◽  
Single Figure ◽  
Third Moment

1. Existing methods of assessing nocturnal episodic hypoxaemia are either insensitive or ignore the majority of the available data. 2. We describe a method of analysis using offline digital processing. A distribution of oxygen saturation (Sao2) with time is produced from all the available data, and subjected to moment analysis to produce a simple index which describes an entire night's Sao2. 3. Our results suggest that the mean and the coefficient of skew fully described a night's Sao2. However, in subjects with chronic air-flow obstruction, the third moment about 100% oxygen saturation (M3100), a single figure, has the same descriptive power as mean and skew. 4. In 17 subjects with chronic air-flow obstruction a significant correlation was found between both daytime Sao2 and Paco2 when plotted against either the M3100 or the skew. 5. Measurements made on two occasions in seven subjects showed good reproducibility for the skew and M3100 indices.

Determination of relevant “average” properties for tubular filler materials used in composites

2011 ◽  
Vol 31 (4) ◽  
Author(s):  
Patrick M. Piccione
Keyword(s):  
Carbon Nanotubes ◽  
Average Diameter ◽  
Weighting Factor ◽  
Filler Materials ◽  
Cross Sectional ◽  
The Third ◽  
Materials Used ◽  
Third Moment ◽  
Calculation Procedures

Abstract To obtain the best estimate of the average diameter and number of walls of tubular objects such as carbon nanotubes, which are used as filler materials in composites, both inner and outer diameters must be taken into consideration. The appropriate weighting factor is calculated from the cross-sectional circular shell area. In the case of cylindrical objects, the formulae simplify considerably and the average diameter and wall thickness are the third moment of their distribution function. Two examples illustrate the numerical effects of these calculation procedures.

Probabilistic Model of Corrosion in Reinforced Concrete Structures Considering Coupling Effects of Influence Factors

2013 ◽  
Vol 671-674 ◽  
pp. 740-745
Author(s):  
Xiao Gang Zhang ◽  
Jiao Wang
Keyword(s):  
Probabilistic Model ◽  
Moment Method ◽  
Influence Factors ◽  
Concrete Structures ◽  
Chloride Concentration ◽  
Corrosion Process ◽  
Chloride Ingress ◽  
Coupling Effects ◽  
The Third ◽  
Third Moment

A probabilistic model of the chloride-induced corrosion process is provided in this paper. Based on the Third-moment method, the uncertainty of various influence factors and the coupling effects of them are concerned. Considering the corrosion process as a statistic process, the probability of corrosion initiation at certain time can be obtained. Moreover, the effect of micro-crack in chloride ingress is taken into account, too. Due to the results of stochastic analysis, the surface chloride concentration is the most important factor that affects the corrosion probability, while the thickness of concrete cover, chloride diffusion coefficient, environmental relative humidity, critical threshold chloride concentration, micro-crack rate, water-to-cement ratio and temperature are also important factors. And the Third-moment method is proved to be reasonable in the durability assessment of corrosion-induced concrete structure. The results in this paper can be used to predict the rest life of corrosion-induced concrete structures.

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