Brief greeting and shared vision

Brief Announcement: Randomized Shared Queues

This paper presents a speci cation of a randomized shared queue that can lose some elements or return them out of order (not in FIFO), shows that the speci cation can be implemented over the probabilistic quorum algorithm of [4, 3], and analyzes the behavior of this implementation. Distributed algorithms that can tolerate some lost and outof-order messages are candidates for replacing the messa...

Greeting from the Chairman

Shared pathways for rod and cone vision.

We have used heterochromatic gratings falling on 10 deg temporal retina to measure the spatial contrast sensitivities of the isolated rod and cone systems in the mesopic range. As the level of illumination was raised within this range, the contrast sensitivity of the rod system increased, reaching a peak of about 50 (and providing an acuity of 6 c/deg) at 20 scot. td, whereupon the rod system b...

A brief history of shared memory

We present a general framework for defining denotational semantic models of shared memory parallel programs, based on an abstract notion of state. We show how this framework can be used to establish natural relationships between traditional models of concurrency and more recent models based on separation principles. We formulate an intuitively reasonable characterization of when one model of st...

The importance of inspiring a shared vision

Background: Leadership programmes have been used to support nurse leaders in developing their skills and equiping them as transformative change agents in healthcare organisations around the world. For this purpose, the Royal College of Nursing’s Clinical Leadership Programme has been adapted, implemented, and evaluated in Switzerland. Although a shared vision is a key element in leading organis...