Interactive computer simulations with complex representations and sophisticated graphics are a relatively new addition to the classroom, and research in this area is limited. We have conducted over 200 individual student interviews during which the students described what they were thinking as they interacted with simulations. These interviews were conducted as part of the research and design o...

The Series Elastic Actuator (SEA) has recently been developed by many research groups and applied in various fields. As SEA is the combination of motor, spring, gear and load, various types and configurations of mechanism have been developed as SEAs to satisfy many requirements necessary for the applications. This paper provides a theoretical framework to categorize and compare these various co...

Biologists devised the word biodiversity to allow us to talk about the totality of life on Earth, encompassing everything from the level of DNA and genes, through to individuals, species, and whole ecosystems. Reducing global biodiversity loss in the face of unprecedented population extirpation and species extinction has become a fundamental goal for conservation, and the subject of an array of...

For students using carefully designed computer simulations, we nd that the type of guidance provided to the student during interviews strongly in uences the amount of independent exploration and inquiry in which they engage. What would be considered relatively little guidance for typical educational activities appears to limit the bene ts of a complex simulated environment. In a study of studen...

introduction one of the central questions in radiological protection is the magnitude of the risks from low doses of radiation, related to the justification and optimization of the diagnostic medical exposures. therefore, the aim of this study was to estimate the cancer incidence and mortality risks in children of different ages, sizes, and ethnicities undergoing computed tomography examination...

‎the water wave generation by wave paddle and a freely falling rigid body are examined by using an incompressible smoothed particle hydrodynamics (isph)‎. ‎in the current isph method‎, ‎the pressure was evaluated by solving pressure poisson equation using a semi-implicit algorithm based on the projection scheme and the source term of pressure poisson equation contains both of divergence free ve...

underwater acoustic wireless sensor network (uawsn) use acoustic signalsto transmit data. acoustic signals in underwater environment have high bit errorrate, long propagation delay and limited bandwidth. another constraint in uwasnis energy. due to these constraints, design of energy and bandwidth efficient andpropagation delay aware mac protocol is a great challenge in uwasn.underwater sensor ...

The Synthetic Environment for Analysis and Simulations (SEAS) developed at the Krannert Graduate School of Management at Purdue University mimics real life economies, with multiple interlinked markets, multiple goods and services, multiple firms and channels and multiple consumers etc. all built from the ground up. It is populated with human agents who make strategically complex decisions and a...

The importance of force sensitivity in robots that interact with unknown disturbance is acknowledged. For the manipulators, impedance controlled robots realized safe and robust object manipulation. For the legged mechanism, it is expected to enhance locomotion stability, since locomotion fundamentally is a manipulation of the center of mass. In order to maximize force sensitivity, both the forc...