Biologically derived polyesters known as polyhydroxyalkanoates (PHAs) represent a potentially "sustainable" replacement to fossil-fuel-based thermoplastics. However, current commercial practices that produce PHA with pure microbial cultures grown on renewable, but refined, feedstocks (i.e., glucose) under sterile conditions do not represent a sustainable commodity. Here, we report on PHA produc...

Educational games may improve learning by taking advantage of the new knowledge and skills of today’s students obtained from extensive use of interactive games. This paper describes how interactive dynamic simulators of advanced technical systems and phenomena can be shaped and adapted as games and competitions supporting technical education and training. Some selected examples at different edu...

For safety-, mission-, or security-critical systems, regulations or acquisition guidelines typically require a documented body of evidence to provide a compelling case that the system satisfies specified critical properties; in other words, an argument is needed to "make the case" for the system's suitability or quality. These guidelines may use terms such as safety case, certification report, ...