different approaches have been presented for estimating river environmental flow which hydrological approach has a lot addressed because of its need to access to limited data and moderately rapid assessment. this approach incorporates various methods therefore comparison between results of different methods is essential. the objective of this study is to investigate and compare the consequences...

At the beginning of the 21 century, most people are no longer surprised by technological revolutions. The twentieth century brought us information technology and biotechnology: key technologies for pioneering innovations such as the computer, the Internet and genetically modified plants. In the transition to the twenty-first century, two other important developments: nanotechnology (the researc...

The intersection of theatre-performance, design, and informatics is a fertile area for a broader understanding of the possible design and interaction between people and avatars in simulated three dimensional information spaces. This paper outlines the theoretical modelling for the visualization of a generic avatar template applicable to information spaces. Such a representation, it is theorised...

We present a modified Gabor-like setup able to recover the complex amplitude distribution of the object wavefront from a set of inline recorded holograms. The proposed configuration is characterized by the insertion of a condenser lens and a spatial light modulator (SLM) into the classical Gabor configuration. The phase shift is introduced by the SLM that modulates the central spot (dc term) in...

Figure 2: Near rectangular dissections in applications. Note that in the applications the areas of the rectangles of a dissection are relevant, actually in most cases these areas are prescribed. A rectangular dissection is area-universal if for any assignment of positive weights to the rectangles there is an equivalent dissection such that the areas of rectangles are equal to the given weights....

Ultracold atoms are still too hot. This may seem a ridiculous claim—after all, the low-temperature exploits of the purveyors of quantum gases are notorious. Laser cooling can flash-freeze atoms to temperatures in the microand nanokelvin range. In the mid 1990s, researchers followed this with evaporative cooling of atoms out of shallow traps and made the first gaseous Bose-Einstein condensates a...

We resolve the problem of small-space approximate selection in random-order streams. Specifically, we present an algorithm that reads the n elements of a set in random order and returns an element whose rank differs from the true median by at most n while storing a constant number of elements and counters at any one time. This is optimal: it was previously shown that achieving better accuracy r...