Co-Phased 360-Degree Profilometry of Discontinuous Solids with 2-Projectors and 1-Camera

Here we describe a co-phased 360-degree fringe-projection profilometer which uses 2-projectors and 1-camera and can digitize discontinuous solids with diffuse light surface. This is called co-phased because the two phase demodulated analytic-signals from each projection are added coherently. This 360-degree co-phased profilometer solves the self-generated shadows cast by the object discontinuities due to the angle between the camera and the single white-light fringe projector in standard profilometry.Comment: 4 pages, 6 Figure

Pengaruh Family Control, Firm Size, Firm Risk, Dan Firm Life Cycle Terhadap Profitabilitas Dan Nilai Perusahaan Sektor Industri Barang Konsumsi

This study aims to examine the effect of family control, firm size, firm risk, and firm lifecycle towards profitability and firm\u27s value. Sampels were taken from 27 consumer goodscompanies, listed in Indonesia Stock Exchange, ranging from 2010 – 2012. The hypotheseswere tested using multiple regression analysis. In this study, profitability was measured byROA (Return on Asset) and firm\u27s value was measured by Tobin\u27s q. The result were, familycontrol and life cycle stage-growth had negative influence towards profitability and firm\u27svalue while firm size and life cycle stage-mature had positive influence. Firm risk had noinfluence to both of profitability and firm\u27s value

Propagation of electromagnetically generated wake fields in inhomogeneous magnetized plasmas

Generation of wake fields by a short electromagnetic pulse in a plasma with an inhomogeneous background magnetic field and density profile is considered, and a wave equation is derived. Transmission and reflection coefficients are calculated in a medium with sharp discontinuities. Particular attention is focused on examples where the longitudinal part of the electromagnetic field is amplified for the transmitted wave. Furthermore, it is noted that the wake field can propagate out of the plasma and thereby provide information about the electron density profile. A method for reconstructing the background density profile from a measured wake field spectrum is proposed and a numerical example is given.Comment: 12 pages in LaTeX style, 11 eps figure