Legal update, Canada: PIPEDA’s Secure Electronic Signature Regulations have been published

Where Have You Been? Secure Location Provenance for Mobile Devices

With the advent of mobile computing, location-based services have recently gained popularity. Many applications use the location provenance of users, i.e., the chronological history of the users’ location for purposes ranging from access control, authentication, information sharing, and evaluation of policies. However, location provenance is subject to tampering and collusion attacks by malicio...

Sex differences in weight in infancy. Published centile charts for weights have been updated.

EDITOR,-The datasheet for Inderal (propranolol) states specifically that the drug is contraindicated in patients with asthma or a history of bronchospasm. Despite this, and despite the well known risks of non-selective I blockers in patients with asthma, over the past few years Zeneca has received a number ofreports of cases in which an asthmatic patient died as a result of being prescribed pro...

Reforming legal regulations and internal rules

We Have Always Been . . . Cyborgs

philosophy of mathematics suited well the ‘‘general emphasisin later nineteenth-century mathematics on revisiting foundationalquestions’’ (p. 61). Pure geometry as it emerged from Frege, Paschand Hilbert, provided a diagram-free, purely sentential notion ofproof, which has lasted unto our own day.In the second, and greater, part of the book, Greaves traces outthe interre...

Have Pentaquark States Been Seen?

The status of the search for pentaquark baryon states is reviewed in light of new results from the first two dedicated experiments from CLAS at Jefferson Lab and of new analyses from several labs on the Θ + (1540). Evidence for and against the heavier pentaquark states, the Ξ(1862) and the Θ 0 c (3100) observed at CERN and at HERA, respectively, are also discussed. I conclude that the evidence ...