This paper addresses fundamental issues related to the modeling of geometric data embedded in high-dimensional spaces. This covers several application fields, including moving objects where trajectories are described in a threeor four-dimensional space, and digital elevation models (DEMs). We show that moving objects and DEMs are specific instances of a broader class of complex spatial data tha...

SuperJournal is a research project aiming to identify what factors will make electronic journals successful and why. The project brings together some 20 society, university press and commercial publishers, who are providing electronic versions of around 50 journal titles in discrete areas of academic research. The “why?” is being established via a formal evaluation study being conducted by Loug...

EPIDEMIOLOGY. Co-ordinating Editor, W. W. Holland. (Pp. viii+212; figs. 26. £3.25). London: Oxford University Press, 1970. THIS book deals, in 15 chapters by different authors, with seven topics: asking the question, study design, collection of data, record linkage, data processing, analysis, and implications. They discuss most aspects of epidemiological research, from formulating hypotheses to...

in general, energy prices, such as those of crude oil, are affected by deterministic events such as seasonal changes as well as non-deterministic events such as geopolitical events. it is the non-deterministic events which cause the prices to vary randomly and makes price prediction a difficult task. one could argue that these random changes act like noise which effects the deterministic variat...