‎ in the present article‎, ‎we study some categorical properties of the category {$bf‎ cpo_{sep}$-$s$} of all {separately strict $s$-cpo's}; cpo's equipped with‎ a compatible right action of a separately strict cpo-monoid $s$ which is‎ strict continuous in each component‎. ‎in particular‎, we show that this category is reflective and coreflective in the‎ category of $s$-cpo's‎, ‎find the free a...

The number of closed-circuit television (CCTV) cameras in British town centres has rapidly increased in recent years. These increases are mirrored in Europe and North America. In Britain many of these cameras videotape town centres, 24 hours a day, 365 days a year. How do CCTV systems account for the space of the town centres in which they operate? What theoretical sensibilities can we use to e...

We propose a novel approach to evaluating how effectively a closed circuit television (CCTV) system can monitor a targeted area. With 3D models of the target area and the camera parameters of the CCTV system, the approach produces surveillance coverage index, which is newly defined in this study as a quantitative measure for surveillance performance. This index indicates the proportion of the s...

Closed circuit television (CCTV) systems deployed on roadway networks are believed to be among the best mechanisms for providing useful, reliable information for effective traffic management. Video images may be displayed and viewed directly by traffic management per­ sonnel for surveillance purposes, or may be processed electronicaJly for detection of traffic metrics such as aver­ age vehicle ...

This paper originates from our desire to identify a limit case of appropriate educational applications of information and communications technology (ICT). Numerous claims have been made about the potential of technology to change the traditionally accepted developmental limits on children’s learning. Claims had also been made in the UK regarding the successful application of video conferencing ...

This issue contains peer-reviewed papers from a workshop on Closed Ecological Systems: Earth and Space Applications at the 35th COSPAR General Assembly in Paris, France, convened in July 2004. The contributions reflected the wide range of international work in the field, especially Europe, Russia, Japan, and the United States. The papers are arranged according to four main themes: 1) Methods of...

This chapter explores the development of a new type of scientific tool – manmade closed ecological systems. These systems have had a number of applications within the past 50 years. They are unique tools for investigating fundamental processes and interactions of ecosystems. They also hold the potentiality for creating life support systems for space exploration and habitation outside of Earth’s...

the aim of present study was to determine the impact of two different icu management model, open and semi closed, on resources utilization in intensive care unit.retrospective cohort analysis using data from hospital database was applied to compare the effect of icu management model on icu length of stay and bed disposition of 1064 patients admitted to the general icu of imam khomeini hospital ...