We discuss spectral energy distributions of a sample of Herbig Ae/Be stars in the context of a passive irradiated disk model. The data have been presented earlier by Meeus et al. (2001), and preliminary interpretations of these data were given in that paper. While the spectra of Herbig Ae stars all show similarities, there is significant variation between the spectra, in particular in the shape...

This paper defines the properties of FDT (Flow Dependence Tail set) and FDH (Flow Dependence Head set), and presents two partitioning methods for finding two parallel regions in two-dimensional solution space. One is the region partitioning method by intersection of FDT and FDH. Another is the region partitioning method by two given equations. Both methods show how to determine whether the inte...

A task was initiated to improve the energy absorption capability of an existing aircraft seat through costeffective retrofitting, while keeping seat-weight increase to a minimum. This task was undertaken as an extension of NASA ongoing safety research and commitment to general aviation customer needs. Only vertical crash scenarios have been considered in this task which required the energy abso...

Lightweight steel framing is a method in housing and construction that have been widely used in lightweight steel construction. In this method, the structure is built by cold formed steel elements. They are cost-effective, light, and easy to assemble. However, the performance of lateral load resisting systems in cold-formed steel structures specially the behavior of cold-formed steel shear wall...

In this paper, a micromachined silicon load cell (force sensor) is presented for measuring loads up to 1000 kg. The sensitive surface of 1 cm2 contains an array of sensing elements to make the load cell insensitive to non-homogeneous load distributions resulting in higher accuracy. The load cell has been realized and tested. Measurement results show an accuracy of 0.2 % of full scale limited by...

A full graph on n vertices, as deened by Fulkerson, is a representation of the intersection and containment relations among a system of n sets. It has an undirected edge between vertices representing intersecting sets, and a directed edge from a to b if the corresponding set A contains B. Kleitman, Lasaga and Cowen gave a uniied argument to show that asymptotically, almost all full graphs can b...

The goal of this work is to calculate the full costs of transportation for autos, trucks, and buses in the Twin Cities region for the years 1998 and 2020. Our midrange estimate is that the costs were $27 billion in 1998, and the costs will grow to $42 billion in 2020 ($9,000 and $11,200 in per capita terms, respectively). These estimates include monetary and nonmonetary costs to individuals, fi...