We consider a zero sum, stochastic differential game which involves two players, the controller and the stopper. The stopper selects the stopping rule which halts the game. The controller chooses the diffusion coefficient of the corresponding state process which is allowed to degenerate. At the end of the game, the controller pays the stopper, the amount E ∫ τ 0 eC(Zx(t))dt, where Zx(·) represe...

A series of new squaraine rotaxanes have been synthesized with a tetralactam macrocycle and stopper groups of varying sizes and functionalities. In chloroform solvent, the relative size of the stopper group appears to have little influence on the high mechanical stability of the rotaxane structure. There is no evidence for unthreading (sometimes referred to as deslipping), even in the presence ...

Viaducts with roller bearings are subject to large displacement, which could lead the collapse of deck during earthquakes. This study attempts prevent displacements by installing steel stoppers at both sides bearings. The efficiency viscous damper stiffness on seismic performance curved viaducts combined use a spatial multipoint is evaluated. pounding phenomena exactly simulated, considering en...

Vortices forming near the slag-steel interface in the mold can entrap inclusions and cause defects in continuous casting of steel slabs. Lab experiments employing a 1/3 rd scale water model were performed to quantify the effects of stopper rod asymmetry on vortex formation. Three stopperrod placements (aligned, front-misaligned and left-misaligned) were considered. Vortex formation was visualiz...

A fundamental issue in the development of concurrent programs is the resource allocation problem. Roughly speaking, it consists of providing some mechanism to avoid race conditions in the access of shared resources by two or more concurrent processes. For such a task, maybe the most widely mechanism consists of using critical sections. Unfortunately, it is also widely-known that programs which ...

This paper presents three types of microfabricated planar check valves that exploit the large compliance of elastomeric polymers such as olydimethylsiloxane (PDMS). The micro-check valves consist of a thin compliant flap and a rigid stopper embedded in close proximity in a icrochannel. The flap is perpendicular to the flow and lies near the stopper, forming a restricted fluid path inside the ch...

A system of models has been developed to study transient flow during continuous casting and applied to simulate an event of multiple stopper-rod movements. It includes four sub-models to incorporate different aspects in this transient event. A three-dimensional (3-D) porous-flow model of the nozzle wall calculates the rate argon gas flow into the liquid steel, and the initial mean bubble size i...

BACKGROUND AND AIMS Ankaferd Blood Stopper (ABS) is a herbal extract obtained from five different plants. It has a therapeutic potential for the management of external hemorrhage and controlling gastrointestinal bleeding. However, ABS's effects are not unknown on gastrointestinal systems. The aim of this study was to assess the effect of short- and long-term systemic exposure and gastrointestin...