BACKGROUND Manual annotation of landmarks is a known source of variance, which exist in all fields of medical imaging, influencing the accuracy and interpretation of the results. However, the variability of human facial landmarks is only sparsely addressed in the current literature as opposed to e.g. the research fields of orthodontics and cephalometrics. We present a full facial 3D annotation ...

We consider the waiting time distribution of the Gl/Gl /1 queue where customers are served in random order; inter-arrival and service times may have finite or infinite variance. Our main result shows that the waiting time in heavy traffic can be written as a product of two random variables. Our proof is based on the intuitively appealing fact that in heavy traffic, the queue length stays consta...

there are many parameters that affect the sheet hydroforming process such as fluid pressure, material properties, interfacial friction between blank and tool surfaces, etc. in this paper, a fem-based taguchi method is used to determine the effects of forming parameters on the quality of part formability in the process of hydrodynamic deep drawing assisted by radial pressure. four important form...

In this letter we propose a novel method to unambiguously estimate the phase-difference of a single-frequency signal measured between a pair of spatially separated sensors. First, we mathematically prove that, in a noiseless system, the phase between a pair of spatially separated sensors with inter-sensor spacing exceeding half wavelength (λ2 ) of the signal of interest, can unambiguously be es...

This paper provides a method for pricing options in the constant elasticity of variance (CEV) model environment using the Lie-algebraic technique when the model parameters are time-dependent. Analytical solutions for the option values incorporating time-dependent model parameters are obtained in various CEV processes with different elasticity factors. The numerical results indicate that option ...

CONTEXT The influence of methodological parameters on the measurement of muscle contractile properties using Tensiomyography (TMG) has not been published. OBJECTIVE To investigate the; (1) reliability of stimulus amplitude needed to elicit maximum muscle displacement (Dm), (2) effect of changing inter-stimulus interval on Dm (using a fixed stimulus amplitude) and contraction time (Tc), (3) th...

In this paper we propose a consistent and asymptotically normal estimator (CAN) for intensity parameters ρ1 & ρ2 for a queueing network with distribution-free inter-arrival and service times. Using this estimator and its estimated variance, a 100(1− α)% asymptotic confidence interval for intensities is constructed. Variance-stabilized bootstrap-t, Bayesian bootstrap, Percentile bootstrap are al...

This paper proposes and estimates a more general parametric stochastic variance model of equity index returns than has been previously considered using data from both underlying and options markets. I conclude that the square root stochastic variance model of Heston (Rev. Financial Stud. 6 (1993) 327) is incapable of generating realistic returns behavior, and that the data are better represente...

Two hundred and forty blood glucose readings were made on 5 Glucochek machines by 2 different operators. The results on all machines correlated poorly with equivalent results from an automatic glucose analyser with major discrepancies at all glucose concentrations. There was a wide gap in performance between the 2 operators. Analysis of variance suggested that errors were not only due to inter-...