The content of decaying physical relics has been digitised as a preservation approach. At the same time, it opens up new possibilities for knowledge exchange and exploitation by reducing constraints imposed confinement. How we produce, organise, disseminate revolutionised widespread use digital formats. However, is not simple task to guarantee longevity media. Valuable data generated in age may...

purpose: this research is to present a plan to improve information services in libraries of islamic of azad university, so that more proper services can be presented to the university community through studying the processes. methodology: this research is descriptive survey. the target population includes 75 central, main units of libraries. collecting information tool is a questionnaire with 3...

introduction: collection development is a process to identify the strengths and weaknesses of the collection of a library based on the needs of the users which plays an important role in the of information systems management. the present research aimed to compare the process of collection development in the libraries of isfahan university and isfahan university of medical sciences to recognize ...

The explosion in Internet usage and huge government funding initiatives in digital libraries have drawn attention to research on digital libraries. Whereas the traditional focus of digital library research has been on the technological development, there is now a call for user-focused research. Although millions of dollars have been spent on building “usable” systems, research on digital librar...

This paper presents a scheme to develop class libraries that satisfy e cient implementation and good reusability. Class libraries that are e ciently implemented often involve complicated protocol to de ne subclasses using those libraries. Since such complicated protocol makes programmers hesitate to use the libraries, class libraries must often use ine cient implementation to provide simple pro...

A model of molecular diversity is presented. The model, termed "Quantized Surface Complementarity Diversity" (QSCD), defines molecular diversity by measuring molecular complementarity to a fully enumerated set of theoretical target surfaces. Molecular diversity space is defined as the molecular complement to this set of enumerated surfaces. Using a set of known test compounds, the model is show...

Inspired by the principle of DNA base-pairing, a new concept for the self-assembly of molecular catalysts is described herein. Thus, employing A–T analogous complementary hydrogen-bonding templates, self-assembly of monodentate to bidentate ligands in the coordination sphere of a transition-metal salt occurs to give defined self-assembly catalysts. This approach is intrinsically combinatorial a...

A general strategy for the synthesis of novel, orthogonally protected scaffolds based on the unique 2-oxa-5-azabicyclo[4.1.0]heptane structure is presented. The described reaction sequence takes advantage of easily available starting materials such as serine and threonine and leads to stereochemically dense structures in few, high-yielding synthetic steps. We show how the stereochemistry can be...

Over the past decade, several technologies have emerged to access nucleic acid-tagged libraries and select the fittest compound within such libraries. This perspective focuses on recent development with PNA-tagged small molecules displayed on DNA templates for screening purposes and to probe the optimal geometry in multivalent interactions.