Theoretical Errors in Contemporary Physics

Design and fabrication of a prototype planar undulator

The main goal of this work is to get the fabrication technology of the insertion devices. A prototype undulator with the period of 48mm and the peak magnetic field of 0.75 T has been fabricated using NdFeB-SH35 magnets based on the cooperation between ILSF and NSTRI. The total magnet length is 483 mm and the number of periods is 8. The magnetic parameters of the undulator are determined in orde...

Verification and Validation of Common Derivative Terms Approximation in Meshfree Numerical Scheme

In order to improve the approximation of spatial derivatives without meshes, a set of meshfree numerical schemes for derivative terms is developed, which is compatible with the coordinates of Cartesian, cylindrical, and spherical. Based on the comparisons between numerical and theoretical solutions, errors and convergences are assessed by a posteriori method, which shows that the approximations...

Influencing Variables on Urban Spatial Structure in Metropolitan Regions; a Study in the Contemporary Theoretical Approaches and Practices

ar X iv : h ep - t h / 93 05 10 4 v 1 2 1 M ay 1 99 3 The role of mathematics in contemporary theoretical physics ∗

Phenomenology of Place in New Topographic Photography

This study uses the phenomenological approach of place to study the place in the contemporary era, which has been portrayed by New Topography artists. This style of photography, according to human function in nature in the contemporary world, was able to reveal facts about the destruction of the earth and proved its position as an applied photography. Given the need for this method of photograp...