It is common to present multiple adjusted effect estimates from a single model in a single table. For example, a table might show odds ratios for one or more exposures and also for several confounders from a single logistic regression. This can lead to mistaken interpretations of these estimates. We use causal diagrams to display the sources of the problems. Presentation of exposure and confoun...

determination of the starter torque-speed diagram is a major task in the design or selection of a proper gas turbine starter. in this paper, the maximum power of the mgt-40 gas turbine starter was calculated based on the dynamics of the rotor, start-up logic, and compressor map. in a recent research, the pressure ratio was assumed as a linear function of the rotor speed and the required starter...

Poisson's ratio ow diagrams, that is, the Poisson's ratio versus the ber fraction , are obtained numerically for hexagonal arrays of elastic circular bers in an elastic matrix. High numerical accuracy is achieved through the use of an interface integral equation method. Questions concerning xed point theorems and the validity of existing asymptotic relations are investigated and partially resol...

This study investigates the mode identifiability of a multi-span cable-stayed bridge in terms of a benchmark study utilizing stabilization diagrams of system model identified by means of the stochastic subspace identification (SSI). The cumulative contribution ratios (CCR) estimated from singular values of system model was also considered. Observations demonstrated that wind speed might influen...

In charged colloidal suspensions, the competition between square-well attraction and long-range Yukawa repulsion leads to various stable domains and Wigner supercrystals. Using a continuum model and symmetry arguments, a phase diagram of spheres, cylinders, and lamellae is obtained as a function of two control parameters, the volume fraction and the ratio between the surface tension and repulsi...

The projected mass of a gravitational lens inside (circular) apertures can be derived from the measured shear inside an annulus which is caused by the tidal eld of the deeecting mass distribution. Here we show that also the multipoles of the two-dimensional mass distribution can be derived from the shear in annuli. We derive several expressions for these mass multipole moments in terms of the s...

The projected mass of a gravitational lens inside (circular) apertures can be derived from the measured shear inside an annulus which is caused by the tidal field of the deflecting mass distribution. Here we show that also the multipoles of the twodimensional mass distribution can be derived from the shear in annuli. We derive several expressions for these mass multipole moments in terms of the...

A Bayesian approach to the estimation of an odds ratio from case-control data is considered. The exact posterior density of the odds ratio and its moments are derived. A log-normal approximation to the density is shown to be adequate for practical purposes. Mechanisms for setting prior parameters are discussed and some examples are presented.

Handwritten signature is the most accepted and economical means of personnel authentication. It can be verified using online or offline schemes. This paper proposes a signature verification model by combining Zernike moments feature with circularity and aspect ratio. Unlike characters, signatures vary each time because of its behavioural biometric property. Signatures can be identified based on...