The ability to move between air and water with miniature robots would allow distributed water sampling and monitoring of a variety of unstructured marine environments, such as coral reefs and coastal areas. To enable such applications, we are developing a new class of aerial-aquatic robots, called Aquatic Micro Aerial Vehicles (AquaMAVs), capable of diving into the water and returning to flight...

Prior studies at Purdue University have shown that PTO entanglements occur most frequently on portable grain augers. A research project was conducted to measure operator exposure to PTO components and document work patterns during the use of grain augers. Information on the methodologies used to measure operator exposure is presented along with data on exposure to conventional grain augers whil...

Ever since Adleman [1] solved the Hamilton Path problem using a combinatorial molecular method, many other hard computational problems have been investigated with the proposed DNA computer [3] [25] [9] [12] [19] [22] [24] [27] [29] [30]. However, these computation methods all work toward one destination through a couple of steps based on the initial conditions. If there is a single change on th...

jeremy shiffman’s editorial appropriately calls on making all forms of power more apparent and accountable, notably productive power derived from expertise and claims to moral authority. this commentary argues that relationships based on productive power can be especially difficult to reveal in global health policy because of embedded notions about the nature of power and politics. yet, it is e...

A number of individuals and organizations have considerable influence over the selection of global health priorities and strategies. For some that influence derives from control over financial resources. For others it comes from expertise and claims to moral authority—what can be termed, respectively, epistemic and normative power. In contrast to financial power, we commonly take for granted th...

in this study, the performance of an irreversible regenerative brayton cycle is sought through power maximizations using finite-time thermodynamic concept in finite-size components. optimizations are performed using a genetic algorithm. in order to take into account the finite-time and finite-size concepts in the current problem, a dimensionless mass-flow rate parameter is used to deploy time v...