F o r the distribution of nuclear charge in fission, a number of empirical hypotheses such a s that of equal charge distribution, unchanged charge density, and minimum potential energy have been proposed in the past by various authors.' Only recently, Holub, Mustafa, and Schmitt2 have calculated the potential energy sur face fo r the charge vibration in 236U by using the two-spheroid liquid-dro...

A numerical simulation of steady and unsteady two-dimensional flows past cylinder with dimples based on highly accurate pseudospectral method is the subject of the present paper. The vorticity and streamfunction formulation of two-dimensional incompressible NavierStokes equations with no-slip boundary conditions is used. The system is formulated on a unit disk using curvilinear body fitted coor...

A visual measurement method based on a key point detection network is proposed for the difficulty of fitting cross-sectional profile ultra-narrow gap welds and low efficiency accuracy manual geometric parameters. First, HRnet (High-Resolution Net) algorithm was used to train feature model, 18 points in “measurement unit” were extracted. Secondly, coordinates are transformed from image coordinat...

In this work an approach to investigate measurement uncertainty in coordinate metrology is presented, based on fitting Gaussian random fields high-density point clouds produced by repeats. The fitted field delivers a depiction of the spatial distribution error over part geometry, and can incorporate local bias information through further or with use external model obtain complete, map. statisti...

All geospatial data are updated periodically. Cadastral parcel mapping, however, has special update requirements that set it apart from other data. Mapped boundaries change continuously to fit with new survey plans. Additionally, parcels have be fitted and aligned adjoining merge them into existing cadastral mapping. This is preferably performed by a spatial adjustment approach systematically i...