A desirable property of one-way functions is that they be total, one-to-one, and onto—in other words, that they be permutations. We prove that one-way permutations exist exactly if PaUP-coUP: This provides the first characterization of the existence of one-way permutations based on a complexity-class separation and shows that their existence is equivalent to a number of previously studied compl...

This document discusses some of the security problems and practical problems with the current Session Traversal Utilities for NAT (STUN) authentication for Traversal Using Relays around NAT (TURN) messages. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This document is a product of the Internet Engineering Task Fo...

solution potassium (so-k) and exchangeable k (ex-k) extracted by nh4oac are the major sources of potassium used by plants, but initially non-exchangeable k (nex-k) can also contribute significantly to plant uptake. perennial ryegrass (lolium perenne, cv. roper) was successively planted in ten surface soil samples with different clay mineralogical composition belonging to five soil types to dete...

Developments in computer and communication technologies over the past ten years aptly support the use of the term global village to describe the present worldwide provision and distribution of information. These technologies are increasingly being employed in Africa, but their presence is not widespread and evenly distributed. Librarians in Africa are establishing the basic tools and organizati...

82  © Japi • January 2014 • Vol. 62 Sir, R denervation (RD) is a catheter based method using radiofrequency ablation(RFA)for treatment of patients with resistant hypertension. T h e d a t a f r o m t w o c l i n i c a l trials(Symplicity HTN-1 and Symplicity HTN-2) has proven the safety and efficacy of RD for treating the patients with resistant hypertension.1,2 Symplicity HTN-1 was a non-rand...

Motivated by the need to cope with floods of data, algorithm design is undergoing profound changes. Self-improvement, online property-preserving filtering, uncertainty, sublinearity and property testing are all parts of the story. I will discuss some of these exciting developments with an emphasis on its geometric aspects.