Authors:M. Bielewski, M. Eriksson, J. Himbert, M. Betti, F. Belloni, and G. Falkenberg
XANES has been recently used for the determination of oxidation states of actinides in environmental samples. To obtain reliable
results, however, a sufficiently long counting time at every probing energy and a large number of experimental points per
XANES spectrum are required, due to the complex mathematical model used to fit the measured spectrum. This makes micro-mapping
difficult, since the time required for data collection becomes unacceptably long. A simplified model for data collection and
evaluation is presented. Its effectiveness has been tested by measuring the distribution of Pu oxidation states in a “hot”
particle coming from a nuclear weapon test site.
Authors:Donivan Porterfield, Lav Tandon, Alexander Plionis, David Mercer, Dominic Peterson, and John Auxier
The development of two generations of a one-dimensional gamma mapping system is described. These systems use high-Z shielding,
linear stage, and a high-purity germanium detector. Application to items of forensic interest is described and results for
such items are presented. The presented results show the fission product (137Cs) and activation product (60Co) distributions along one-dimension of an archival item.
Journals covered by the 2006 Science Citation Index Journal Citation Reports database have been subjected to a clustering
procedure utilizing h-similarity as the underlying similarity measure. Clustering complemented with a prototyping routine
provided well-conceivable results that are both compatible with and further refine existing taxonomies of science.
Authors:B. M. Gupta, Avinash Kshitij, and Charu Verma
The research output of India in computer science during 1999–2008 is analyzed in this paper on several parameters including total research output, its growth, rank and global publication share, citation impact, share of international collaborative papers and major collaborative partner countries and patterns of research communication in most productive journals. It also analyses the characteristics of most productive institutions, authors and high-cited papers. The publications output and impact of India is also compared with China, South Korea, Taiwan and Brazil.
Authors:Cathelijn J. F. Waaijer, Cornelis A. van Bochove, and Nees Jan van Eck
In bibliometrics, mapping is an increasingly important tool in the classification of documents into groups and subgroups and in the analysis of other types of patterns (e.g., Börner et al. 2003 ). So far, mapping