Tungsten inert gas welding (TIG) represents one of the most widely used metal joining processes in industry. Its propensity to generate a greater portion of welding fume particles at the nanoscale poses a potential occupational health hazard for workers. However, current literature lacks comprehensive characterization of TIG welding fume particles. Even less is known about welding fumes generat...

Our solution of the apprentice challenge is based on [2] and does not assume any a priori bound on the number of Job threads or on the value of the counter field. This should be contrasted with previous attempts to solve the apprentice challenge using model-checking (i.e., the “finite Apprentice”). In our solution, we use the predicates of Table 1. The set Fields contains all fields used in the...

Much work in recent years has focused on transferring human skill to robots by abstracting that skill into a machine-understandable, computational model. Such skill models, however, can be used not only for transferring human control strategy to robots, but also for helping less-skilled human operators improve their performance. We propose a two-step approach for transferring skill from human e...

We present results of an investigation of preservice secondary mathematics and science teachers’ conceptions of project-based instruction (PBI) and their enactments of PBI in apprentice (student) teaching. We evaluated their thinking and implementations within a composite framework based on the work of education researchers. We analyzed survey responses, both qualitatively and statistically, fr...