S we introduced the Distal Jet* to the pro­ fession more than six years ago, it has achieved worldwide acceptance as an esthetic fixed appliance that can produce consistently reliable distal molar movement without the need for unusual patient compliance.1-22 Our experience with hundreds of Distal Jet cases has helped us identify key components of the appliance that could possibly be upgraded an...

The legalization of physician assisted suicide (PAS) in Oregon and physician assisted death (PAD) in The Netherlands has revitalized the debate over whether and under what conditions individuals should be able to determine the time and manner of their deaths, and whether they should be able to enlist the help of physicians in doing so. Although the change in the law is both dramatic and recent,...

The structural analysis of large intracontinental wrench faults is fundamental for deciphering the long-term evolution continental crust in complex areas terms their geodynamic and large-scale crustal block displacements. In this contribution, we demonstrate a pre-Miocene dextral activity present-day left-lateral Great Kavir - Doruneh Fault System (GKDFS, Central Iran), one major active strike-...

The maximum cable tension is a crucial parameter in the design of cable-driven parallel robot (CDPR) since various mechanical components CDPR must be designed to safely withstand loads induced by this tension. For CDPRs having number cables at least equal its degree freedoms (DOFs), article deals with determination smallest vectors allowing required wrench set feasible. problem formulated as mi...

Mobile manipulation is a hot area of study in robotics as it unites the two classes of robots: locomotors and manipulators. An emerging niche in the field of mobile manipulation is aerial mobile manipulation. Although there has been a fair amount of study of free-flying satellites with graspers, the more recent trend has been to outfit UAVs with graspers to assist various manipulation tasks. Wh...

—In this paper, the failure of wire­actuated parallel manipulators is examined considering their failure modes. A methodology for investigating the effect of actuator/wire failures on the force/moment capability of manipulators is presented, and the criteria for full and partial recovery from these failures are established. The methodology is also applicable for the cases that the minimum norm ...

Optimising the timing of delivery involves striking a balance between the benefits and risks of pregnancy prolongation compared with those of induction or elective Caesarean delivery. Birth of the baby is always in the best interest of the woman. For her, pregnancy prolongation has no direct benefit, but for the baby, the benefits may be large at gestational ages remote from term. This can be a...

On the 20th of May last, Dr Groves of Trinity requested me to see a woman who had been in labour for upwards of twenty-four hours, and who had fallen under his care after being abandoned by another practitioner on making several ineffectual, and it must be added, unskilful attempts to deliver. It was a case of twins, and the first child presenting naturally was delivered without trouble. The se...