235 Do you have questions on how to improve your leadership skills? Do you have a management or administrative problem that stumps you? Have you developed unique insights that helped you improve your leadership skills? If so, consider writing for this column dedicated to improvement of leadership skills at all levels. For more information, e-mail Associate Editor Colleen L. Corish, RN, MN, OCN®...

Beamforming is a widely used method of provisioning high quality wireless channels that leads to high data rates and simple decoding structures. It requires feedback of Channel State Information (CSI) from receiver to transmitter, and the accuracy of this information is limited by rate constraints on the feedback channel and by delay. It is important to understand how the performance gains asso...

D iabetes Care is the most widely read clinical diabetes journal. This is due, in large part, to the vision and strategies of the previous editors: Jay S. Skyler (1978–1982, the founding editor), F. John Service (1983–1987), David C. Robbins (1988 –1991), Allen L. Drash (1992–1996), and Charles M. Clark, Jr. (1997–2001). A measure of its influence is the recent adoption of a Portuguese edition ...

A microscopic, stochastic, minimal model for collective and cohesive motion of identical self-propelled particles is introduced. Even though the particles interact strictly locally in a very noisy manner, we show that cohesion can be maintained, even in the zero-density limit of an arbitrarily large flock in an infinite space. The phase diagram spanned by the two main parameters of our model, w...

“It was through the evolution of this filtrationreabsorption system that the kidney came to be almost entirely responsible for the composition of the internal environment of the body,manufacturing it, as we have said, in reverse, by saving some things from the glomerular filtrate and rejecting others. Among the substances known to be reabsorbed by the tubules in man, for example, are water, sod...

Given Markov chains and Markov decision processes (MDPs) whose transitions are labelled with non-negative integer costs, we study the computational complexity of deciding whether the probability of paths whose accumulated cost satisfies a Boolean combination of inequalities exceeds a given threshold. For acyclic Markov chains, we show that this problem is PP-complete, whereas it is hard for the...

This paper provides an overview of current cryptographic techniques, targeting management and focussing on applicability of cryptographic tools and on the level of their security. The paper shows real-life examples and latest developments in the area. It also brings recommendations that should help managers to understand the necessary basics, what is really important and how to manage cryptology.

This paper introduces the reader to the context for the papers in this journal supplement by describing the background and task assigned to the authors, a short history of the development of the field of literacy and health in Canada, some recent developments and opportunities, some information on the nature and magnitude of the issue, and an overview of the supplement. The publication results ...

In order to overcome typical problems in markerless motion capture from video, such as ambiguities, noise, and occlusions, many techniques reduce the high dimensional search space by integration of prior information about the movement pattern or scene. In this work, we present an approach in which geometric prior information about the floor location is integrated in the pose tracking process. W...