NNSS Position Fixing Errors Resulting from Ship's Speed Errors and/or Antenna Height Errors

Lessons learnt from errors in radiotherapy centers

Background: The purpose of this work is to discover and analyze errors and incidents in some radiotherapy centers, and to introduce methods that could reduce their occurrences, especially those which had happened due to the use of improper and inadequate equipment. This work is a first step toward clarifying the role of education in a risk-conscious culture, and changing the attitude of radioth...

Improved Landau Gauge Fixing and Discretisation Errors ∗

Gauge fixing in lattice gauge theory simulations is crucial for many calculations e.g. the study of gauge dependent quantities such as the gluon propagator [1]. However, the standard lattice Landau gauge condition [2] is the same as the continuum condition, ∑ μ ∂μAμ = 0, only to leading order in the lattice spacing, a. The focus of this talk is to use mean-fieldimproved perturbation theory [3] ...

Characterization of the tangent height errors

Blind deconvolution: errors, errors everywhere

attempt to reconstruct a true spectrum from an observed one. The problem we're considering is sometimes called blind deconvolution, because we're trying to unravel not only the spectrum, but the function that caused the blurring. These problems also arise in image deblurring. Spectroscopy Consider the data in Figure 1, which represents counts measured by a spectrometer. Suppose we have particle...

Dosimetric Effect Resulting From the Collimator Angle, the Isocenter Move, and the Gantry Angle Errors

Introduction: Dose distribution can be affected by diverse parameters, such as beam orientations, and collimator angles. These parameters should respect and maintain the international recommended levels during the realization of the quality assurance protocols of linear accelerators. This study aimed at evaluating the dosimetric effects on treatment quality considering...