Value for Money in Electronic Journals
Abstract The author examines the proposition that electronic journals provide enhanced value for their costs when compared to print subscriptions. At the journal, article, and use levels, the author reviews the pricing policies of two different journal publishers, one commercial and one nonprofit. He confirms and extends these findings using recently published research. Whereas much research remains to be undertaken on the basis of standards, and definitions must be agreed on, the existing, albeit imperfect, evidence indicates that both libraries and their readers benefit significantly from electronic journals in the areas of cost per use and convenience of delivery of scholarly and research literature. This proposition serves as a clarion call for more detailed research based on agreed-upon on standards. Serials Review 2003; 29:83–88.
Let's stick together: collaborative purchasing of electronic journals in the National Health Service.
AIM
To describe the process and the lessons learned from the collaborative purchasing of electronic journals by National Health Service (NHS) libraries in the East Midlands, UK.


RESULTS
The background to a successful joint purchasing initiative is described, including the methodology for selecting titles and the formula for dividing the payment. Factors that have a bearing on successful collaboration are discussed, including use of a Framework Agreement, licensing conditions and measuring impact.


CONCLUSION
NHS librarians working together can leverage collective benefits for users through collaborative purchasing.
Super-resolution of overlapped waves in time and frequency domain in a directional borehole radar measurement
The Multiple Signal Classification (MUSIC) algorithm is modified in order to resolve multiple waves and to estimate reflection points in 3-D space. This algorithm is suitable for directional borehole radar with a circular dipole array antenna. Making use of the spatial frequency difference of acquired array signals, the signals are decorrelated, and the 3-D MUSIC algorithm is applied. The time domain signals of the singlehole array-type borehole radar are used in order to form a measurement vector in the MUSIC algorithm. A computer simulation confirms that the proposed algorithm may estimate the directions of arrival (DOA) for three signals. Applying the proposed algorithm to field experiment data successfully estimates the DOA of a reflected wave from a fracture in rock.