At the Center for Engineering Learning and Teaching we are conducting a study of engineering design expertise in which experts engage in the same tasks as students from a series of previous studies. One study goal is to create a continuum of engineering design expertise across a subset of dimensions (e.g., cognitive, process, affective) to describe learners’ growth toward acquiring expertise. W...

Single molecule data made of on and off events are ubiquitous. Famous examples include enzyme turnover, probed via fluorescence, and opening and closing of ion-channel, probed via the flux of ions. The data reflects the dynamics in the underlying multi-substate on-off kinetic scheme (KS) of the process, but the determination of the underlying KS is difficult, and sometimes even impossible, due ...

We study the effective spacetimes in lower dimensions that can be extracted from a multidimensional generalization of the Schwarzschild-Tangherlini spacetimes derived by Fadeev, Ivashchuk and Melnikov (Phys. Lett, A 161 (1991) 98). The higher-dimensional spacetime has D = (4 + n + m) dimensions, where n and m are the number of “internal” and “external” extra dimensions, respectively. We analyze...

Conventional web browsers are designed to display a single web page for each window. A reader who wants to follow a link to a new web page while continuing to display the previous web page must do so by utilizing the “open link in new window” menu feature. Having done so, the reader may then control the positions and dimensions of both the old and the new windows, in order to display both web p...

Amongst the large number of write-and-throw-away-spreadsheets developed for one-time use there is a rather neglected proportion of spreadsheets that are huge, periodically used, and submitted to regular update-cycles like any conventionally evolving valuable legacy application software. However, due to the very nature of spreadsheets, their evolution is particularly tricky and therefore error-p...

In this paper, a new method for locating eye pairs based on valley field detection and measurement of fractal dimensions is proposed. Fractal dimension is an efficient representation of the texture of facial features. Possible eye candidates in an image with a complex background are identified by valley field detection. The eye candidates are then grouped to form eye pairs if their local proper...

An analysis of technologies that allow creating microrelief structures on the surface sapphire substrates has been carried out. It is shown most effective method forming relief with submicron dimensions ion beam etching through a protective mask formed by photolithography. The main problems in are removal static electric charge process substrates, as well obtaining windows specified sizes, whic...