J.Y. Cotronis, E. Floros, N. Papazis Dept. of Informatics, Univ. of Athens, Panepistimiopolis, 157 71 Athens, GREECE. tel.: +30 1 7230172 fax: +30 1 7219 561 e-mail: [cotronis, floros, papazis]@di.uoa.gr Overview Programs forming tree process communication topologies, each process communicating only with its parent and children processes, are well suited to PVM [2], whilst programs forming grap...

We present an analysis of an optical blue spectrum of the pulsating helium star V652 Her (=BD+13◦3224) in order to determine its effective temperature, surface gravity and chemical composition. By fitting synthetic spectra to the observations we find that for our spectrum Teff = 24 550 ± 500 K, log g = 3.68 ± 0.05 (cgs) and vt = 5 ± 5 km s−1. The surface gravity, together with a previous measur...

In the field of security protocol analysis, a class of automated methods relies upon the use of symbolic techniques. We illustrate this approach by focusing on one such method. We outline the underlying protocol model, the concept of symbolic execution and the resulting verification method. We then discuss the benefits of the symbolic approach when contrasted with traditional methods baded on f...

Methods from computer algebra, mostly so called Grr obner bases from commutative algebra, are used to solve the algebraic Riccati equation (ARE) symbolically. The methods suggested allow us to track the innuence of parameters in the system or penalty matrices on the solution. Some non-trivial aspects arise when addressing the problem from the point of view commutative algebra, for example the o...

Acupuncture was used to treat a 51-year-old 'lollipop lady' (school crossing patrol officer), with severe carpal tunnel syndrome (CTS) affecting her dominant hand, and co-existing cervical spondylosis. I postulate that her symptoms were work related. She responded well to acupuncture, which provided good symptomatic treatment rather than cure and allowed her to continue working whilst she await...

traditionally, capoeta populations from the southern caspian sea basin have been considered as capoeta capoeta gracilis. study on the phylogenetic relationship of capoeta species using mitochondrial cytochrome b gene sequences show that capoeta population from the southern caspian sea basin is distinct species and receive well support (posterior probability of 100%). based on the tree topologie...

S udden loss of sight is a life-changing event that changes the patient's view of the world and how they perceive themselves and others. In this article we will consider the emotional and psychological impact of those affected by sudden and irreversible sight loss. It is recognised that people affected by sight loss will understandably experience very strong and at times over whelming feelings ...

idiopathic lobular grunulomatous mastitis is a chronic inflammatory disease of breast that can clinically mimic brent carcinoma or pyogenic abscess. the most common clinical presentation is a fine unilateral discrete mass associated inflammation of overlying skin. nipple retraction and sinus formation are present. breast tb should be considered in differential we present a few cause of our cent...

Doctors do not risk being swamped by their patients’ complaints if they listen until a patient indicates that his or her list of complaints is complete. Even in a busy practice driven by time constraints and financial pressure, two minutes of listening should be possible and will be sufficient for nearly 80% of patients. We gathered data in a tertiary referral centre that is characterised by a ...