statistical analysis of measurements reliability
Báo cáo khoa học: "Statistical analysis of IMRT dosimetry quality assurance measurements for local delivery guideline" ppt
... point of measurement (typically less than 1-2 cGy), which might be outside of ion-chamber sensitivity We used gamma criteria of 3%/3 mm for 2D dose analysis of composite plans The percentage of ... of 700 In figure 1, three symbols illustrate different trends of all three treatment sites Most of H&N cases were negative with the total MU of > 1,200 Figure shows the frequency histograms of ... treatment site were determined by using the concept confidence limit of |mean|+1.96s The statistical analysis of point dose measurements for all treatment sites and the resulting confidence limit...
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Tài liệu Báo cáo khoa học: "A Statistical Analysis of Morphemes in Japanese Terminology" docx
... growth rate of the morphemes of each type observed separately Each of t h e m expresses the probability of encountering a new morpheme for the separate sample consisting of the morphemes of the same ... quantitative status of the morphemes of each type as a mass in terminology So the transitions of Pf and Rf, with changing N, express the changes of the status of the morphemes of each type in the ... the ratio of loss of the number of morpheme types, calculated by the sample relative frequencies as the estimates of population probabilities Assuming the binomial model, the ratio of loss is...
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BUSINESS CYCLES: A Theoretical, Historical and Statistical Analysis of the Capitalist Process potx
... Factors of Change The Theory of Innovation The Entrepreneur and His Profit The Role of Money and Banking in the Process of Evolution Interest (Money Market; Capital) Chapter IV THE CONTOURS OF ECONOMIC ... Fundamental Importance of the Historical Approach to the Problems of the Cyclical Process of Evolution B Questions of Principle —A few questions of principle must be disposed of first C The Long ... think of costs incident to change of occupation or to any shift from the production of one kind or quality of commodity to the production of another kind or quality, or to the exchange, by means of...
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Báo cáo hóa học: " Statistical Analysis of Surface Reconstruction Domains on InAs Wetting Layer Preceding Quantum Dot Formation" pot
... shut off Figure shows the STM image of 1.5 ML of InAs WL just prior to QD formation at 300°C Stripes due to As dimers were clearly observed The image was divided by a 25 25 mesh The pitch of the ... each cell of 25 25 mesh in Fig rffiffiffiffi S f ¼ ; N where S is the total area of Voronoi cells, which are not touching the frame, and N is the number of valid reconstruction domains The density of each ... Voronoi tessellations of STM view field of Fig according to a (1 3)/(2 3) domains and b (2 4) domains Table Density, d, and standard deviation of Voronoi cell area, rVc of surface reconstruction...
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Báo cáo hóa học: " Research Article Simple Statistical Analysis of the Impact of Some Nonidealities in Downstream VDSL with Linear Precoding" doc
... likelihood estimation of the primary parameters of twisted pair cables,” ESTSI/STC TM6 981t08a1, Madrid, Spain, January 1998 [24] A Safak, Statistical analysis of the power sum of multiple correlated ... knowledge of the channel statistical parameters is discussed as well In Section 5, the analysis is extended to the outof-domain (alien) crosstalk, by evaluating its impact in absence of cancellation ... this expression is independent of the number of lines This is a consequence of the fact that we are analyzing the average behavior The plot of dmax , as a function of S, is reported in Figure The...
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báo cáo hóa học:" Statistical analysis of linear spatial holes estimators in cognitive radio" ppt
... bound on the variance of any unbiased estimator of a deterministic parameter RSS-based algorithms try to estimate location and power of a primary user using RSS measurements of the secondary users, ... form of the by covariance matrix of estimation error is obtained as, Cv = H − 21M vT D T Ω−1 H − 21M vT D −1 (36) where the first two rows and columns of Cv consist of covariance matrix of positioning ... simultaneous estimation of locations and powers of the primary users in a CR network To estimate the location of the primary user, RSS algorithms measure and process the received power of the primary...
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Báo cáo hóa học: " Research Article Statistical Analysis of Multipath Fading Channels Using Generalizations of Shot Noise" pot
... series expansion is of order λ1/2 , the second term is of order 1, the third term is of order 1/λ1/2 , and the kth is term of order (2) The joint characteristic function of the centered random ... (e.g., letting λT (t) be a series of mountains concentrated near i/W) That is, the orderliness effect of the Poisson process is mitigated because of the limitations of the equipment that is used to ... we present a comparison of the computation of the received power when the arrival times of the multipath components are known and when these are assumed to be the points of a homogeneous Poisson...
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Báo cáo hóa học: " Research Article Statistical Analysis of Hyper-Spectral Data: A Non-Gaussian Approach" pot
... properties of the ECDs, the analysis of the statistical behavior of real data can be reduced to the study of the distributions of the scalar variable D The analysis was carried out in terms of a graphical ... including a number of pixels large enough to neglect the errors in the estimate of the mean vector and the covariance matrix Thus, they reduced the analysis of the statistical behavior of real data ... estimate the value of υ to obtain the best fitting The analysis of the statistical behavior of MIVIS data was carried out by also considering mixture models The introduction of those models has...
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Báo cáo sinh học: " Statistical analysis of ordered categorical data via a structural heteroskedastic threshold model" pdf
... according to sex of calf (males, females) and age of dam at calving in years Scores and were pooled on account of the low frequency of score Nine levels were considered for age of dam: < years, ... dependency of the probabilities 77,! with respect to sex of calf and age of dam is not described properly by a model with constant variance Whether the poor fit of the S-TM is the result of ignoring ... (1982) Maximum likelihood estimation of misspecified models Econometrica 50, 1-25 Wright S (1934a) An analysis of variability in number of digits in an inbred strain of guinea pigs Genetics 19, 506-536...
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STATISTICAL ANALYSIS OF CLINICAL TRIAL DATA USING MONTE CARLO METHODS
... high-performance computing and his installation of Stan in Linux server I also thank other colleagues of mine for their encouragement v Baoguang Han STATISTICAL ANALYSIS OF CLINICAL TRIAL DATA USING MONTE ... examples of allocation probabilities of BCM in trials that mimic LOTS 82 Figure 4.2 Comparison of the distributions of various re-randomization tests 90 Figure 4.3 Comparison of the ... modelling of the correlation is important to address the issue of dependent censoring of the non-terminal event by the terminal event [2-4] It also can allow modelling of the influence of the nonterminal...
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Registration, atlas generation, and statistical analysis of high angular resolution diffusion imaging based on riemannian structure of orientation distribution functions 1
... failure of the mapping Thus, one of the fundamental limitations of choosing the anatomy of a single subject as an atlas is the introduction of a statistical bias based on the arbitrary choice of the ... role of Chapter in the ODF-based analysis framework 61 4.2 Illustration of the general framework of the Bayesian HARDI atlas estimation 4.3 63 The evolution of ... tests such as voxel-based analysis of diffusion tensors have been developed [8, 9, 10, 11] With the wide use of DTI combined with the development of the associated brain analysis technologies [e.g...
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Registration, atlas generation, and statistical analysis of high angular resolution diffusion imaging based on riemannian structure of orientation distribution functions 2
... as atlas, Iatlas , the space of the initial momentum m0 , provides a linear representation of the nonlinear diffeomorphic shape space in which linear statistical analysis can be applied 21 BACKGROUND ... maps, are available in closed form, as illustrated in Figure 2.1 Figure 2.1: Illustration of the manifold of square-root ODFs (picture token and modified from [1])) √ The square-root ODF ( ODF) is ... non-negative to ensure uniqueness The space of such functions is defined as Ψ = {ψ : S2 → R+ |∀s ∈ S2 , ψ(s) ≥ 0; 16 s∈S2 ψ (s)ds = 1} (2.1) 2.1 Riemannian Manifold of ODFs We see that from Eq (2.1), the...
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Registration, atlas generation, and statistical analysis of high angular resolution diffusion imaging based on riemannian structure of orientation distribution functions 3
... CST-right), using 50 3.5 HARDI Data of Children Brains Figure 3.8: Panels (a-d) show the maps of mean squared error of spherical harmonics coefficients (MSE of SH) of the ODFs between the template ... generation and group analysis of HARDI for a variety of clinical studies 55 DIFFEOMORPHIC METRIC MAPPING OF HIGH ANGULAR RESOLUTION DIFFUSION IMAGING BASED ON RIEMANNIAN STRUCTURE OF ORIENTATION DISTRIBUTION ... the derivative of J with respect to is expressed as a function of mt According to the general LDDMM framework derived in [93, 94], we directly give the expression of the gradient of J with respect...
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Registration, atlas generation, and statistical analysis of high angular resolution diffusion imaging based on riemannian structure of orientation distribution functions 4
... atlas ODF images in common space Statistical Analysis Biomarkers/ Inference Figure 4.1: The role of Chapter in the ODF-based analysis framework 4.1 General Framework of Bayesian HARDI Atlas Estimation ... a Riemannian structure of the ODFs 62 4.2 The Shape Prior of the Atlas and the Distribution of Random Diffeomorphisms Figure 4.2: Illustration of the general framework of the Bayesian HARDI atlas ... ESTIMATION OF WHITE MATTER ATLAS FROM HIGH ANGULAR RESOLUTION DIFFUSION IMAGING a shape prior of the white matter anatomy and the likelihood of individual observed HARDI datasets First of all, we...
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Registration, atlas generation, and statistical analysis of high angular resolution diffusion imaging based on riemannian structure of orientation distribution functions 5
... for each row Under one type of ODF ¯ metrics of that row, the mean variance of synthetic data, M SE(ψi , ψ); the mean squared of the geodesic regression are ˆ residuals of the geodesic regression, ... order approximation of logexp(ψε ,xi ξ) ψi based on the Taylor expansion of the logarithm map Dψ exp(ψ, xi ξ) is the operator that maps ˆ μ from the tangent space of ψ to that of ψi When we assume ... solution to Eq (5.9) Now, to measure the amount of explained variance of the ODF by the variable X, we use a generalization of the coefficient of determination, i.e., R2 statistic, R =1− n ˆ i=1...
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Registration, atlas generation, and statistical analysis of high angular resolution diffusion imaging based on riemannian structure of orientation distribution functions 6
... Tract-Specific and Region of Interest Analysis of Corticospinal Tract Integrity in 125 REFERENCES Subcortical Ischemic Stroke: Reliability and Correlation with Motor Function of Affected Lower Extremity ... attainable in the estimation of statistical parameters Bull Calcutta Math Soc., 37:81–89, 1945 15 [84] N N C ENCOV Statistical decision rules and optimal inference In Translations of Mathematical Monographs, ... Therefore, the shape prior of the HARDI atlas can be modeled using a centered Gaussian random field (GRF) model of the initial momentum In order to construct the likelihood of observed HARDI datasets,...
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Statistical Methods of Valuation and Risk Assessment: Empirical Analysis of Equity Markets and Hedge Fund Strategies
... standard deviation of the residuals from the style analysis of the hedge fund strategy S using the nine indices, σI is the standard deviation of the residuals from the style analysis of the style index ... number of returns used in the style analysis (N=72), and k is the number of market indices with nonzero style weights 3.5.3 Analysis of Style Weights We execute the return-based style analysis ... ratio of 1.05 where the directional strategies exhibit a ratio of 0.75 and in the case of a minimal acceptable rate of 0% non-directional strategies exhibit on average an annualised ratio of 1.75...
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Reliability analysis of power system based on generalized stochastic petri nets
... connectivity of each component of the system Essentially, the ETN operates based on the information regarding the states of the components, e.g open/closed for circuit breakers, out-oforder/working ... description of states (configurations); 2) Specification of transitions (events) The result of such a procedure can be then synthesized in a Markov Chain enriched by extra elements The function of such ... parameters of transitions that are marking-dependent In other words, the firing rate λk of timed transitions, as well the weight ωk of immediate transitions, can be evaluated as the product of a nominal...
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Reliability analysis of a power system based on the multi state system theory
... bound of the system reliability, the performance of each state is defined as the minimum capacity of each interval, that is: g1 = 5200 , g = 5550 , g3 = 5700 , g = 5850 , V RELIABILITY ANALYSIS OF ... {G = gl } , G M M sys i ; n is the number of components in subsystem i ; M i is the number of possible states of subsystem i Gm is the performance of subsystem i ; qm is the corresponding Assume ... number of possible states of the system; Gs is the performance of the system; qs is the corresponding probability M U j ( z ) = ∑ ql ⋅ z gl f ( g k , gl ) s =1 s system; N is the number of subsystems...
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Tài liệu Báo cáo khoa học: "The grapho-phonological system of written French: Statistical analysis and empirical validation" pdf
... statistical structure of the language? We believe that, in the field of visual word processing, the lack of precise quantitative descriptions of the mapping system is ... resolution of these issues In this paper, we present a descriptive analysis of the grapheme-phoneme mapping system of the French orthography, and we further explore the sensitivity of adult human ... availability of graded knowledge of grapheme-phoneme mappings and hence, that they are more consistent with a parallel distributed approach than with the abstract rules hypothesis Statistical analysis of...
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