Cognitive gameplay—the cognitive dimension of a player’s experience—emerges from the interaction between a player and a game. While its design requires careful consideration, cognitive gameplay can be designed only indirectly via the design of game components. In this paper, we focus on one such component—the core mechanic—which binds a player and game together through the performance of essent...

LONDON (II A YOUlll U.S. AIr Force mechanic, a Vietnam medal win· Der, Is presumed lost at sea after steal· Ing a four-engine CI30 Hercules troop transport from Its English base Friday and beading over the Atlantic, apparent· l Iy In a solo attempt to fly home. HIs last contact was a radio-telephone conversation with his wife, Mary Ann, In Poquoson, Va ., reporting he was hav· ling trouble two ...

We present a mathematical model for a study of the mechanical properties of endovascular stents in their expanded state. The model is based on the theory of slender curved rods. Stent struts are modeled as linearly elastic curved rods that satisfy the kinematic and dynamic contact conditions at the “vertices” where the struts meet. This defines a stent as a mesh of curved rods. A weak formulati...

Although titanium remains as the prevalent material in dental implant manufacturing new zirconia-based materials that overcome the major drawbacks of the standard 3Y-yttria partially-stabilized zirconia (Y-TZP) are now emerging. In this study, a new ceramic nanocomposite made of alumina and ceria-stabilized TZP (ZCe-A) has been used to produce dental implants with the mechanic and topographic c...

For a hard flying objector contacts with the surface of fluid, there exists a critical contact angle between the flying direction and the surface direction. When the actual contact angle is less than the critical angle, the flying objector will get additional moment in flying direction and be rebounded up to tens grades. This critical angle is determined by the flying velocity and elastic const...

Platelet activation is a precursor for blood clotting, which plays leading roles in many vascular complications and causes of death. Platelets can be activated by chemical or mechanical stimuli. Mechanically, platelet activation has been shown to be a function of elevated shear stress and exposure time. These contributions can be combined by considering the cumulative stress or strain on a plat...

The sound propagation mechanisms inside dense granular matter are challenging the attempts to describe it because of the discrete nature of the material. Phenomena like dissipation, scattering, and dispersion are hard to predict based on the material state and/or properties and vice-versa. We propose here a simulation method using dynamic discrete elements in order to get more insight in this p...

Before You Purchase a Used Car It is advisable to hire a mechanic to inspect a car you are considering purchasing. Many local repair shops or service stations will inspect the vehicle for a fee. Check in the yellow pages under “Auto Repair” for a listing of shops. When calling, make sure that the shop will check all the vital systems (brakes, belts, steering, oil, cooling system, exhaust, shock...

Before You Purchase a Used Car It is advisable to hire a mechanic to inspect a car you are considering purchasing. Many local repair shops or service stations will inspect the vehicle for a fee. Check in the yellow pages under “Auto Repair” for a listing of shops. When calling, make sure that the shop will check all the vital systems (brakes, belts, steering, oil, cooling system, exhaust, shock...