A semantic framework has been successfuly developed for a project involving a network of globally distributed scientific instruments. Through the use of this framework, the semantic expressivity and richness of the project’s ASCII data is systematically enhanced as it is successively represented in XML (eXtensible Markup Language), RDF (Resource Description Formal) and finally OWL (Web Ontology...

In this paper, the comparative studies of Adaptive Region Based Huffman compression techniques are done. All these techniques use a region formation algorithm that is also discussed. This algorithm is used to form regions whose size is adjusted depending on the ASCII value difference of elements in the file. One of the techniques is Size Adaptive Region Based Huffman Compression (SARBH) where H...

Until now, there has been no standard way for host names to use characters outside the ASCII repertoire. This document describes a mechanism called IDNA that enables internationalized host names, that is, host names that use characters drawn from a much larger repertoire. (The "D" in the name originally stood for "domain", but the work is actually focused on host names, so the word "host" is us...

An automated multiparametric water analyser was developed and evaluated. The system was based on Sequential Injection Analysis and featured a photometric detection system comprising a tricolour RGB LED source and a photodiode. A program compiled in Visual Basic was used to control the SIA flow system, the LEDs, and the data acquisition and processing. The program loads and executes methods writ...

Proper image registration during image combination relies on accurately determining the offsets between images. These offsets may take many different forms depending on how they are measured. This reports describes conventions which PyDrizzle Version 4.0 (and later) will use when interpreting offsets between images that are being processed. The format of an ASCII file will be described as one m...

A scheme is described which views an alphabet as a 2-dimensional table where the column and row numbers may be specified as 4-, 5-, or 6-bit 'chunks' called quartets, quintets or sextets resp. In transmitting an element of the alphabet, the column number is NOT transmitted unless it is different from the current or default value; the row number is always transmitted. The possible omission of th...

An inverse of a schema mapping M is intended to “undo” what M does, thus providing a way to perform “reverse” data exchange. In recent years, three different formalizations of this concept have been introduced and studied, namely, the notions of an inverse of a schema mapping, a quasi-inverse of a schema mapping, and a maximum recovery of a schema mapping. The study of these notions has been ca...

This document explores issues with Internationalized Domain Names (IDNs) that result from the use of various encoding schemes such as UTF-8 and the ASCII-Compatible Encoding produced by the Punycode algorithm. It focuses on the importance of agreeing on a single encoding and how complicated the state of affairs ends up being as a result of using different encodings today.

We present Frequency Analyser, an Android TM application for measuring the fundamental frequency of a sound wave with very high precision in a frequency range between 100 Hz and 11 kHz. The application allows exporting the data of frequency as a function of time to an ASCII file. Several examples of application to Physics and Engineering teaching experiments are presented.