This paper describes a massive survey of Network Time Protocol @TI") servers and clients in order to discover statistics of time and frequency mm, as well as determine the health and welfare of the NTP synchronization subnet operating in the global Internet. Among the conclusions of the survey are that most NTP clocks are within 21 ms of their synchronization sources and all are within 29 ms on...

3 Editorial N urses and other healthcare professionals from around the world are meeting May United States are gathering to explore how integrative nursing is being implemented in various settings and with diverse patient populations. Presentations will focus on characteristics of successful integrative health programs as well as the emerging research agenda underlying integrative nursing. A ma...

The goal of most hypermedia systems is to open up complex information spaces through the use of associative networks of nodes containing texts, images, and acoustic signals. The power of such information systems can be considerably enhanced by the integration of knowledge representation. We illustrate this claimwith an example hypermedia information system about the oldest existing globe of the...

We describe several challenging issues related to virtual globe manipulations for GIS that highlight the important interplay between geometric modeling and scientific visualization. We begin by motivating and describing a globe tessellation algorithm designed to avoid singularities at the poles, then discuss other uses of the tessellation that enable certain types of shape modeling on the surfa...

PURPOSE Ballistic impact studies and supercomputer modeling were performed to elicit the mechanisms of optic nerve rupture that may accompany blunt ocular trauma. METHODS Paintball ocular impact responses were studied with abattoir-fresh porcine eyes. Physics-based numerical code CTH was used to produce robust geometric and constitutive models of the eye and orbit, providing a comparative 3-D...

OBJECTIVE To report the visual and anatomic outcomes as well as to predict the visual prognosis of combat ocular trauma (COT) during Operations Iraqi and Enduring Freedom. DESIGN Retrospective, noncomparative, interventional, consecutive case series. PARTICIPANTS Five hundred twenty-three consecutive globe or adnexal combat injuries, or both, sustained by 387 United States soldiers treated ...

There are all sorts of things very poor people living in poor countries don’t have. They lack secondary-school educations, usually, and good medical care. They lack steady work and life insurance, bank accounts and competent legal representation, adequate fertilizer for their crops, adequate protein in their diets, reliable electricity, clean water, indoor plumbing, low-interest loans, incubato...