This research articulates a knowledge-building process in interaction-based e-learning. For exploration of a knowledge-building process, an interaction-based e-learning pro‐ gram was developed and implemented at a college level course. Throughout the course, quantitative and qualitative data including students' perceived knowledge-building proc‐ ess from questionnaires, online messages, intervi...

Microscopic traffic flow models enable predictions of operations, which allows engineers to assess the efficiency and safety effects roadway designs. Modeling vehicle trajectories inside intersections is challenging because there an infinite number possible paths in a two-dimensional space, drivers can simultaneously adapt their speeds as well. To date, human driver for simultaneous longitudina...

The authors employ three numerical methods to explore the motion of low Reynolds number swimmers, modeling the hydrodynamic interactions by means of the Oseen tensor approximation, lattice Boltzmann simulations, and multiparticle collision dynamics. By applying the methods to a three bead linear swimmer, for which exact results are known, the authors are able to compare and assess the effective...

A microscopic theory for the interaction between semiconductor quantum well structures and laser eld based on the semiconductor Bloch equations is applied to vertical-cavity surface-emitting lasers (VCSELs) with the inclusion of plasma heating. The semiconductor Bloch equations are reduced to those for the rst and second moments of the carrier density distributions in the carrier wave vector. P...

The Transportation Research Forum, founded in 1958, is an independent, nonprofit organization of transportation professionals who conduct, use, and benefit from research. Its purpose is to provide an impartial meeting ground for carriers, shippers, government officials, consultants, university researchers, suppliers, and others seeking exchange of information and ideas related to both passenger...

Nanotechnology-based microscopic robots could provide accurate in vivo measurement of chemicals in the bloodstream for detailed biological research and as an aid to medical treatment. Quantitative performance estimates of such devices require models of how chemicals in the blood diffuse to the devices. This paper models microscopic robots and red blood cells (erythrocytes) in capillaries using ...