Guide to Cataloging DVD and Blu-ray Discs Using AACR2r and MARC 21 2008 Update

This guide is intended as an update to the 2002 Guide to Cataloging DVDs UsingAACR2r Chapters 7 and 9 created by the DVD Cataloging Task Force of OLAC. The update incorporates rule changes and interpretations that resulted from the 2004 Amendments for Chapters 7 and 9 of Anglo-American Cataloguing Rules (AACR2) and expands the discussion of formats to include Blu-ray Discs, DualDiscs, and DVD-Audio Discs. The information and cataloging examples presented should help clarify principles and rules used in cataloging DVD formats and digital video disc formats. There is also information to help the cataloging process for the Blu-ray Discs and DVD-Audio, newer formats that libraries will begin and continue to purchase as producers market and develop them for consumer use

Best Practices for Cataloging DVD-Video and Blu-ray Discs Using RDA and MARC21

Best Practices for Cataloging DVD-video and Blu-ray Discs Using RDA and MARC21 builds upon the work of the 2008 Guide to Cataloging DVD and Blu-ray Discs Using AACR2r and MARC21, which in turn updated the 2002 Guide to Cataloging DVDs Using AACR2r Chapters 7 and 9 created by the DVD Cataloging Task Force of OLAC. The focus of this new document is to provide a set of “best practice” recommendations rather than a step-by-step instruction manual for cataloging DVD-video and Blu-ray Discs. One reason for this shift is that RDA cataloging practice is far from settled, particularly in regard to special format materials. Best practice recommendations will likely be easier to manage as RDA instructions evolve. This document is intended for use with Resource Description and Access (RDA) and the MARC21 Format for Bibliographic Data. It should not be considered a substitute for the RDA Toolkit. The best practice recommendations and cataloging examples presented in the document are intended only to clarify RDA principles and instructions used in cataloging DVD-video and Blu- ray Disc formats

Best Practices for Cataloging DVD-Video and Blu-ray Discs Using RDA and MARC21 Version 1.1

Purpose Best Practices for Cataloging DVD-video and Blu-ray Discs Using RDA and MARC21 builds upon the work of the 2008 Guide to Cataloging DVD and Blu-ray Discs Using AACR2r and MARC21, which in turn updated the 2002 Guide to Cataloging DVDs Using AACR2r Chapters 7 and 9 created by the DVD Cataloging Task Force of OLAC. The focus of this new document is to provide a set of “best practice” recommendations rather than a step-by-step instruction manual for cataloging DVD-video and Blu-ray Discs. One reason for this shift is that RDA cataloging practice is far from settled, particularly in regard to special format materials. Best practice recommendations will likely be easier to manage as RDA instructions evolve. This document is intended for use with Resource Description and Access (RDA) and the MARC21 Format for Bibliographic Data. It should not be considered a substitute for the RDA Toolkit. The best practice recommendations and cataloging examples presented in the document are intended only to clarify RDA principles and instructions used in cataloging DVD-video and Blu- ray Disc formats. The opening section provides a general overview of DVD and Blu-ray technology, disc characteristics, plus a comparison with compact disc (CD) technology. A brief introduction to RDA follows, to provide a basic frame of reference for the document. Since most libraries are still encoding data in MARC21, the main part of the document is generally arranged by RDA element in the order they are encountered in a MARC21 record. Each section includes examples that reflect the principles outlined in the document. Examples use ISBD as the presentation format. A table outlining recommended description and encoding of DVD-Video and Blu-ray Disc attributes is given in the appendix. A list of resources and a selection of full MARC21 record examples illustrating common situations encountered in DVD-Video and Blu-ray Disc cataloging completes the document

Collateral circulation: Past and present

Following an arterial occlusion outward remodeling of pre-existent inter-connecting arterioles occurs by proliferation of vascular smooth muscle and endothelial cells. This is initiated by deformation of the endothelial cells through increased pulsatile fluid shear stress (FSS) caused by the steep pressure gradient between the high pre-occlusive and the very low post-occlusive pressure regions that are interconnected by collateral vessels. Shear stress leads to the activation and expression of all NOS isoforms and NO production, followed by endothelial VEGF secretion, which induces MCP-1 synthesis in endothelium and in the smooth muscle of the media. This leads to attraction and activation of monocytes and T-cells into the adventitial space (peripheral collateral vessels) or attachment of these cells to the endothelium (coronary collaterals). Mononuclear cells produce proteases and growth factors to digest the extra-cellular scaffold and allow motility and provide space for the new cells. They also produce NO from iNOS, which is essential for arteriogenesis. The bulk of new tissue production is carried by the smooth muscles of the media, which transform their phenotype from a contractile into a synthetic and proliferative one. Important roles are played by actin binding proteins like ABRA, cofilin, and thymosin beta 4 which determine actin polymerization and maturation. Integrins and connexins are markedly up-regulated. A key role in this concerted action which leads to a 2-to-20 fold increase in vascular diameter, depending on species size (mouse versus human) are the transcription factors AP-1, egr-1, carp, ets, by the Rho pathway and by the Mitogen Activated Kinases ERK-1 and -2. In spite of the enormous increase in tissue mass (up to 50-fold) the degree of functional restoration of blood flow capacity is incomplete and ends at 30% of maximal conductance (coronary) and 40% in the vascular periphery. The process of arteriogenesis can be drastically stimulated by increases in FSS (arterio-venous fistulas) and can be completely blocked by inhibition of NO production, by pharmacological blockade of VEGF-A and by the inhibition of the Rho-pathway. Pharmacological stimulation of arteriogenesis, important for the treatment of arterial occlusive diseases, seems feasible with NO donors

What’s the ballyhoo about blogs?

Ten librarians offer spontaneous, even off-the-cuff, opinions about the pros and cons of blogs and blogging. Are blogs a substitute for print communication or older electronic resources such as static Web pages and electronic discussion lists? What will the future hold for blogs and their content? The librarians reflect on these questions and describe their own use of blogs. © 2007 Elsevier Ltd. All rights reserved