Claims that scores on pencil and paper IQ tests predict performance in easy laboratory perceptual motor rasks are weakened by methodological inadequacies. With an experimental design avoiding these weaknesses the AH 4 IQ test predicted rate of learning and performance after 5 days practice on ‘Space Fortress’ better than did age, between 18 and 36 years, or amount of previous experience at vide...

In this paper we propose a new approach to plane partitioning with similar features to those of Polar Diagram, but we assume that the pole is close to the sites. The result is a new tessellation of the plane in regions called Near Pole Polar Diagram NPPD. Here we define the (NPPD) of points, the dual and the Contracted dual of it, present an optimal algorithms to draw them and discuss the appli...

CHALLENGES TO THE SECURITY OF ENTERPRISE NETWORKS The common image of the enterprise network conjures up a fortress with a perimeter protected by a layer of security devices (firewalls, proxy routers, intrusion prevention systems, etc.). In this view, the territory is clearly demarcated and the feared attacks come from outside. Enter wireless technology and the ubiquitous laptop; rather than a ...

Placental infections are major causes of maternal and fetal disease. This review introduces a new paradigm for placental infections based on current knowledge of placental defenses and how this barrier can be breached. Transmission of pathogens from mother to fetus can occur at two sites of direct contact between maternal cells and specialized fetal cells (trophoblasts) in the human placenta: f...

This paper describes two preliminary experiments concerned with the construction of a robot head. The initial design and research is aimed at producing a system with two cameras and two microphones on a system capable of operating with the same degrees of freedom and reflex times as its biological counterpart. Whilst the primary goal of the project is develop an anthropomorphic system with the ...

I propose a comprehensive account of negation as a modal operator, vindicating a moderate logical pluralism. Negation is taken as a quantifier on worlds, restricted by an accessibility relation encoding the basic concept of compatibility. This latter captures the core meaning of the operator. While some candidate negations are then ruled out as violating plausible constraints on compatibility, ...

having selected quhistan as one of the important centers of the nazaris’ activity in iran, the local muhtashams of this province focused their efforts on increasingly expanding their spheres of influence in the region. one of the important centers that the nazaris had in mind to expand was nīmrūz province (sistan). by occupying the fortresses in the passageways at the entrance of sistan, they w...