We present a 7 yr timing study of the 2.5 ms X-ray pulsar SAX J1808.4−3658, an X-ray transient with a recurrence time of ≈2 yr, using data from the Rossi X-ray Timing Explorer covering 4 transient outbursts (1998–2005). We verify that the 401 Hz pulsation traces the spin frequency fundamental and not a harmonic. Substantial pulse shape variability, both stochastic and systematic, was observed d...

In this paper we study the birational rigidity problem for smooth Mori fibrations on del Pezzo surfaces of degree 1 and 2. For degree 1 we obtain a complete description of rigid and non-rigid cases. 1. Notions and results. Due to progress in the Minimal Model Program, the classification problem in the modern birational geometry for varieties of negative Kodaira dimension can be formulated as fo...

Glossary Difficulty initiating and maintaining sleep (DIMS): A broad term that includes insomnia with any of the subtypes described above. Idiopathic insomnia: Lifelong insomnia with a presumed organic component. Inadequate sleep hygiene insomnia: A form of insomnia that is conceptualized as being perpetuated, in large measure, by lifestyle issues. Initial insomnia: Difficulty falling asleep in...

This research seeks to develop a novel branch of materials systems called Distributed Intelligent Materials Systems (DIMS) which incorporate actuation, sensing, electronics and intelligence as inherent parts of the material structure. A microcantilever optical switch is fabricated as a concept demonstrator with Gallium nitride (GaN) as host material. GaN has several material characteristics whi...

Self-similar fractals arise as the unique attractors of iterated function systems (IFSs) consisting of finitely many contracting similarities satisfying an open set condition. Each point x in such a fractal F arising from an IFS S is naturally regarded as the “outcome” of an infinite coding sequence T (which need not be unique) over the alphabet Σk = {0, . . . , k − 1}, where k is the number of...

INTRODUCTION There appears to be a significant prevalence of poisoning and adverse drug reactions in Singapore. However, the resources needed by physicians to assist them in the management of such cases are limited. This study examines the information resources currently utilised by medical professionals in assisting them in the management of poisonings and adverse drug reactions. The preferred...

OBJECTIVES Several standards applied to the healthcare domain support semantic interoperability. These standards are far from being completely adopted in health information system development, however. The objective of this paper is to provide a method and suggest the necessary tooling for reusing standard health information models, by that way supporting the development of semantically interop...

ln this paper we defme the n-cube Qn as the poset obtained by t&kmg the Cartesian product sf n chains each zonsjsting of two points. For a finite poset X, we then define dims A as tY;e smallest positive integer n such that X can be embedded as a subpos:: t of QC For any poset X we then have Ilog2 WI 6 dim2 X G IXr. For the distributive Mice f, = z*, dim2 L 5 iXt and for the crown $, dim2(3$) =:...

[This corrects the article on p. 265 in vol. 6, PMID: 26124925.].

The majority of children with cerebral palsy in developing countries have no access to trained therapists; for example, in Pakistan, there is less than one trained general physiotherapist per million population. In Pakistan, cerebral palsy handling skills were taught to a group of parents, teachers, and paraprofessionals in a series of practical training sessions. A pediatric physiotherapist le...