The paper analyses the digital library services for China’s scientific communities, explores the challenges toward sustainable digital libraries, presents a development strategy for digital libraries using Chinese Academy of Sciences as an example, and provides a layered design framework for a digital library in an e-science environment.

Over the past three years (2006-2008), the medical/health and public health communities have shown a growing interest in using online 3D virtual worlds like Second Life(R) (http://secondlife.com/) for health education, community outreach, training and simulations purposes. 3D virtual worlds are seen as the precursors of 'Web 3D' , the next major iteration of the Internet that will follow in the...

=. Accessed Jan 1, 2000. 9. Lederberg J. Digital communications and the conduct of science: the new literacy. Proc IEEE. 1978;66(11):1314–9. 10. National Library of Medicine. Profiles in Science. NLM, 1999. Available at: http://www.profiles.nlm.nih.gov. Ac-

In use of saturable Cr(4+):YAG crystals, we have demonstrated the stable Q-switched and mode-locked (QML) operation of the Nd:LuVO(4) laser. The operation range of QML in use of the Cr(4+):YAG is larger than that use of SESAM and NLM. The obtained shape of Q-switched envelope, repetition rate and pulse energy are demonstrated to depend on the initial transmittance of the Cr(4+):YAG and reflecti...

The National Library of Medicine (NLM), part of the National Institutes of Health in Bethesda, Maryland, is the world’s largest medical library. In 1879, NLM began publishing Index Medicus, a unified international database of biomedical literature. Index Medicus has since evolved into MEDLINE, an online electronic database searchable by using PubMed; it remains the world’s most important index ...

BACKGROUND After the release of compressed sensing (CS) theory, reconstruction algorithms from sparse and incomplete data have shown great improvements in diminishing artifacts of missing data. Following this progress, both local and non-local regularization induced iterative reconstructions have been actively used in limited view angle imaging problems. METHODS In this study, a 3D iterative ...

Two articles in a recent issue of the Communications of the ACM put forth somewhat alarming claims about the role of the Internet in our lives. Columnist Peter Neumann observed that “we seem to have evolved into a mentality of ‘If it’s not on the Internet, it doesn’t exist.’” Neumann also noted that the Web duplicates very little of the material we might find in traditional institutions like pu...