Since 1979 when threshold schemes were introduced by Blakley (Bla79) and Shamir (Sha79), many papers in this area have been published. These papers are mostly about particular designs and applications of threshold schemes. In this work, we are interested in characterisations of ideal threshold schemes rather than particular constructions. Of course, these characteristic properties do not depend...

Groundwater from a shallow freshwater lens on St. George Island, a barrier island located in the Panhandle of Florida, eventually discharges into Apalachicola Bay or the Gulf of Mexico. Nutrient concentrations in groundwaters were monitored downfield from three onsite sewage treatment and disposal systems (OSTDS) on the island. Estimates of natural groundwater nutrient concentrations were obtai...

For some reason, the sacral heritage of Lovran and its surroundings has escaped the eye of medical historians, until now. seeing that the Parish Church of st George in Lovran holds a central position in this heritage, the authors provide an analysis of medical elements in the church. The analysis has focused on three aspects. The first aspect are medical elements, especially the anthropological...

not much worried whether they be right or wrong. His desire to be the center of attraction may lead him to do things considered irrational when viewed from other angles. If he is in the upper 10 per cent of his class at school, it might be well to advance him to the next grade, provided he is sufficiently interested to show that he is capable of doing the work. If convenient, the teacher should...

We present the first results of a deep unbiased submillimetre survey carried out at 450 and 850μm. We detected 12 sources at 850 μm, giving a surface density of sources with S850μm > 2.8 mJy of 0.49± 0.16 arcmin . The sources constitute 20-30% of the background radiation at 850μm and thus a significant fraction of the entire background radiation produced by stars. This implies, through the conn...

Cosmology and other scientific results from the WMAP mission require an accurate knowledge of the beam patterns in flight. While the degree of beam knowledge for the WMAP one-year and three-year results was unprecedented for a CMB experiment, we have significantly improved the beam determination as part of the five-year data release. Physical optics fits are done on both the WMAP is the result ...

Examining the spatio-temporal attributes of populations of invasive organisms can provide insights into their rates and patterns of spread, which in turn can suggest mechanisms driving their establishment and persistence (Peterson & Vieglais, 2001). Climate plays a central role in many invasion events, by impacting host distribution (Iverson & Prasad, Natural Resources and Environmental Science...