Collection Development in the Digital Age: Changing Roles of the National Library of China

With the development of the National Digital Library Project, the National Library of China will collect more digital publications and promote the dissemination of Chinese publications to the world. The collection development policy will be revised in regular basis to reflect the latest development of librarianship in China. However, the general principle will not be changed: to preserve our cultural heritage and to provide service to the users

国家图书馆外文图书采访工作的回顾与展望

A historical review and future prospects of acquisitions of monographs in foreign languages in the National Library of China

FRBR / LRM Lectures in China

Pat Riva’s lectures on FRBR/LRM in Hangzhou, Shanghai and Beijing will have a special importance. I hope more Chinese colleagues will pay attention to the future development of FRBR/LRM

MARC Formats in China: Local or International?

L'applicazione dei formati MARC nelle biblioteche cinesi ha una storia lunga ormai 20 anni. Nell'epoca dell'internazionalizzazione e della digitalizzazione, però, la domanda da porsi è la seguente: perché viene utilizzato l'UNIMARC come base per il CNMARC? È la scelta migliore per i formati bibliografici in Cina? Esistono altre soluzioni? In questo articolo l'autore offre una panoramica di documenti storici, analizzati alla luce dello stato dell'arte dei formati MARC in Cina.The application of MARC formats in Chinese libraries has a history of about 20 years. At the age of internationalization and digitization, people ask the question: why we chose UNIMARC for the basis of CNMARC? Is it the best choice for China? Are there any other options? In this paper, the author reviews many historical documents and analyzes the present status of MARC formats in China

Accessing slip activity in high purity tin with electron backscatter diffraction and measurement of slip strength

Beta-tin has been used widely as an interconnect in modern electronics. To improve the understanding of the reliability of these components, we directly measure the critical resolved shear stress of individual slip systems in beta-tin using micropillar compression tests at room temperature with crystal orientations near-[100] and [001] in the loading direction within a large grain high purity tin (99.99%) sample. This activates the (110)[1-11]/2, (110)[1-1-1]/2, (010)[001] and (110)[001] slip systems. Analysis of the slip traces and load-displacement curves enables measurement of the critical resolved shear stress for epsilon=10^(-4) of tau_(CRSS)^({110}/2)=10.4+/-0.4 and tau_(CRSS)^({010})=3.9+/-0.3 MPa

Implicit Decomposition for Write-Efficient Connectivity Algorithms

The future of main memory appears to lie in the direction of new technologies that provide strong capacity-to-performance ratios, but have write operations that are much more expensive than reads in terms of latency, bandwidth, and energy. Motivated by this trend, we propose sequential and parallel algorithms to solve graph connectivity problems using significantly fewer writes than conventional algorithms. Our primary algorithmic tool is the construction of an $o(n)$-sized "implicit decomposition" of a bounded-degree graph $G$ on $n$ nodes, which combined with read-only access to $G$ enables fast answers to connectivity and biconnectivity queries on $G$. The construction breaks the linear-write "barrier", resulting in costs that are asymptotically lower than conventional algorithms while adding only a modest cost to querying time. For general non-sparse graphs on $m$ edges, we also provide the first $o(m)$ writes and $O(m)$ operations parallel algorithms for connectivity and biconnectivity. These algorithms provide insight into how applications can efficiently process computations on large graphs in systems with read-write asymmetry

哥本哈根第63届国际图联大会部分论题概析

This article gives a summary of some themes in the 63rd IFLA General Conference from six aspects.Firstly,it introduces cultural acclimatization of information systems and application of Z39.50 protocal.In the next place,it describes electronic media and services and its statistics, and introduces challengesin the preservation of electronic information.Next,the author addresses UNESCO's telematics as an ppportunities for libraries in developing countries.Finally,it introduces MARC harmonization initiative and metadata project