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1.
《Library & information science research》2019,41(3):100968
Conventional statistical methods (e.g. logistics regression, decision tree, etc.) have been used to analyze library demand-driven acquisitions (DDA) data. However, these methods are not well-suited to predict when acquisitions will be triggered or how long e-books will remain unused. Survival analysis, a statistical method commonly used in clinical research and medical trials, was employed to predict the time-to-trigger for DDA purchases within the context of a large research university library. By predicting which e-books will be triggered (i.e., purchased), as well as the time to trigger occurrence, the method tested in this study provides libraries a deeper understanding of factors influencing their DDA purchasing patterns. This understanding will help libraries optimize their DDA profile management and DDA budgets. This research provides a demonstration of how data science techniques can be of value for the library environment. 相似文献
2.
[目的/意义]探讨美国图书馆需求驱动采购（DDA）的标准化发展,介绍美国国家信息标准协会（NISO）出版的《图书的需求驱动采购推荐实施规范》（NISO DDA）,为中国图书馆DDA标准化建设提供参考。[方法/过程]通过文献考察,介绍NISO DDA产生的背景、规范的制定过程、规范的要素、作用以及NISO DDA应用中面临的挑战。[结果/结论]NISO DDA为DDA走向标准化和可持续发展奠定了基础。它对保护图书馆、出版商、经销商、电子图书数据库集成商等各利益相关者的利益,以及对各方在合作共赢的基础上规范化采纳推广DDA提供指南并起到积极的作用。同时,DDA的可持续发展继续面临着挑战。图书出版链中的各利益相关者仍然为DDA的可持续发展及标准化建设积极探索。 相似文献
3.
This article reports findings from a multiphase analysis of demand-driven acquisitions (DDA) within the academic research library setting. Evaluating local collections within the context of Trueswell's (1969) often-cited 80/20 Rule, phase one of this study illustrates the deficiencies of a just-in-case approach to building library collections. Following from this, phase two evaluates the viability of DDA as the just-in-time collection-building solution librarians have sought as an answer to low-use titles that plague most academic library collections. Supported by 16?months of data, this study scrutinizes the comparative value of DDA against traditionally acquired titles along two key dimensions—the subject-matter profile of purchases and their overall usage levels. Further, the concept of a utility as value paradigm, as well as a purchase-use equilibrium for library collections, provide a theoretical framework in which the relative value of DDA is assessed. From a content, or subject-matter, perspective, this study finds negligible deviation in those purchasing patterns associated with DDA when compared with traditionally-acquired materials. At the same time, DDA titles experience much higher levels of use and are, therefore, associated with markedly lower cost-per-use figures and greater overall value. 相似文献
4.
Beth Denker 《图书馆管理杂志》2018,58(3):282-292
In 2016, ProQuest started advertising their new Access to Own (ATO) model for ebooks as an alternative to their other Demand Driven Acquisition (DDA) models. The ATO model was touted as applying the cost of loans toward title ownership to balance costs of purchasing and loans. This article shares the Colorado Alliance of Research Libraries' history of ebook DDA and the process of transition to a DDA ATO model. 相似文献
5.
读者决策的图书馆藏书采购——藏书建设2.0版 总被引：15，自引：3，他引：12
读者决策的图书馆采购开始迅速地应用在美国研究型图书馆,尤其是在电子图书采购的实践中.文章简要地回顾了图书馆藏书建设的形成以及催生这种新型模式的原因和技术环境,并描述了它的工作流程和问题. 相似文献
6.
Pamela Johnston 《Journal of Interlibrary Loan, Document Delivery & Electronic Reserve》2013,23(2):121-125
There is a trend among academic libraries to increase collaboration between interlibrary loan and collection development to improve patron access to materials and build library collections. Instead of borrowing returnable materials, interlibrary loan may initiate purchases that will become part of the library's collection. This can mean anything from an organizational change combining interlibrary loan with the acquisitions unit or creating new workflows to facilitate purchasing. At the University of North Texas Libraries, the Interlibrary Loan office is a unit of the Access Services Department. Buying instead of borrowing for the ILL unit began with a Demand Driven Acquisitions (DDA) program and has expanded with the establishment of the University of North Texas Libraries' access-based collection development policy. Interlibrary Loan provides “Just-In-Time” (JIT) access to materials not available through regular interlibrary loan sources and adds relevant materials to the Libraries' collections. 相似文献
7.
《The Reference Librarian》2013,54(91-92):23-38
Summary The transition of academic library reference resources from print to electronic format has been characterised by a growing level of strategic decision making by librarians, as mediated searches were replaced by end-user CD-ROM formats, only to be superseded by online user access. The experience of Australian university libraries, which were early adopters of these changes, is outlined. Particular factors which impacted on this transition in other English-speaking countries (the United Kingdom, United States, Canada, and South Africa) are also described. The formation of purchasing consortia has been crucial in all countries in facilitating this transformation of reference collections. 相似文献
8.
Rachel King 《期刊图书馆员》2013,64(3):289-306
In a time of increasing financial pressures on universities, the expense of library resources—and the potential for cost inflation—threaten the academic library collection. This article asks whether the academic library media center will be able to continue to offer a stable inventory of films, given the legal and commercial structures currently in place. It provides a history of the film industry’s interactions with its intermediaries, forecasts some of the obstacles to ongoing feature film affordability and access in libraries, offers strategies for librarians, and suggests some cause for hope. 相似文献
9.
读者参与图书采购实践国内外比较分析 总被引：2，自引：0，他引：2
[目的/意义] 针对国内外在读者参与采购实践中表现出的差异进行比较分析，为国内改进读者参与采购模式提供参考。[方法/过程] 首先分析国内读者参与采购的研究与实践概况。从电子图书和纸质图书同步的DDA项目、馆际互借ILL DDA项目分析国外读者参与采购的模式。从读者参与采购的工作流程和效率、读者线上参与荐购方式、荐购知识库、读者参与采购线下模式、荐购经费比例等方面详细比较分析国内外读者参与采购的异同。[结果/结论] 国内在读者参与采购方面开展积极探索，荐购方式多样，功能模块齐全，在整合工作流程、提高荐购效率、线上线下相结合、完善荐购知识库、智能图书信息推送、完善荐购服务规则、建立激励措施等方面还需要做出进一步改进。 相似文献
10.
Kit Condill 《Slavic & East European Information Resources》2017,18(3-4):128-151
Publications in the Turkic languages of the North Caucasus (Kumyk, Karachai-Balkar, Nogai, and a few others) are intelligible to readers of Turkish, Tatar, Kazakh, and other more commonly taught Turkic languages, but have suffered from serious neglect as sources for Western scholarship and, concomitantly, as materials that Western libraries might want to acquire. This is largely due to three factors: a lack of awareness on the part of scholars and librarians that publications in these languages exist; a lack of awareness that these publications have scholarly value at least as high as that of publications commonly cited in scholarly works about Islam in the Russian Empire and Soviet Union, etc.; and the difficulty (especially in the past) of acquiring materials in these languages via the established acquisitions networks of Western libraries. Part of a planned series of articles exploring the publication history of and bibliographic record for the languages of the North Caucasus, this article will use language family (e.g., Turkic) as the unit of analysis, rather than the ethnoterritorial units created during the Soviet period (i.e., Kabardino-Balkaria) or in earlier eras (i.e., Daghestan). More broadly, the (quite understandable) failure of Western libraries to amass comprehensive collections in the vernacular languages of the North Caucasus raises interesting questions regarding the nature and purpose of the contemporary research library, which will be explored as well. 相似文献
11.
《The Reference Librarian》2013,54(91-92):5-22
Summary Reference works were present in the earliest libraries; and their numbers have grown inexorably ever since. They consume an increasing share of library acquisitions budgets. This article traces the evolution of reference collections, drawing on experiences at the author's library. The author concludes that while reference questions will always be with us; it is perhaps less certain that they will always be answered from “reference works” in collections labeled “reference.” 相似文献
12.
Demand-driven acquisition (DDA) programs are playing an increasingly important role in academic libraries. However, the literature surrounding this topic illustrates the wide-ranging, and frequently unpredictable, results of DDA implementation. As uncertainty abounds, librarians continue to seek out deeper understandings of those processes driving the use and purchase of DDA materials. Implicit in this search is a desire to understand how local environmental factors and user preferences dictate broader collection use and purchasing patterns. A small number of these studies have sought deeper insights through predictive modeling, though success has been limited. Following this line of inquiry, this study explores how machine learning might enable more effective collection development and management strategies through the predictive modeling of complex collection use and purchasing patterns. This research describes a replicable implementation of an adaptive boosting (AdaBoost) model that predicts the likelihood of DDA titles being triggered for purchase. The predictive capacity of this model is compared against a more traditional logistic regression model. This study's results show that the AdaBoost model possesses much higher predictive capacity than a regression-based model informed by the same set of predictors. The AdaBoost algorithm, once trained with local DDA data, provides accurate predictions in 82% of cases. 相似文献
13.
数字图书馆及华南理工大学图书馆电子阅览室 总被引：10，自引：1，他引：9
对数字图书馆的概念,数字图书馆高技术化、网络化等特征,信息咨询、采编等业务工作及对馆员知识结构的要求进行了探讨。并介绍了华南理工大学电子阅览室数字文献服务方面所做的工作。 相似文献
14.
《The Reference Librarian》2013,54(91-92):39-51
Summary The evolution of electronic sources has had a significant impact on reference collections in libraries, and public library reference collections are no exception. Evaluating, selecting, and organizing sources to meet the needs of public library users has always been a fundamental role of public librarians. However, now they have the added responsibility of evaluating electronic resources and deciding whether the electronic sources will supplement or replace traditional paper reference sources. Issues of authority, accessibility, cost, comfort, and user education must be carefully weighed during this evaluative process. 相似文献
15.
Nackil Sung 《资料收集管理》2020,45(3):195-207
AbstractA DDA (Demand Driven Acquisitions) preferred Approval Plan allows libraries to acquire DDA eligible books triggered by users. Non-DDA books are acquired automatically, because there is no mechanism that allows these books to be requested by users. This study explores the procedure called Purchase by Request (PBR) that allows non-DDA books to be discoverable and requested by users. After incorporating both DDA and PBR into an Approval Plan, all books in the Approval Plan are exposed to users for just-in-time purchases, and in the process saving the library a substantial amount of money. 相似文献
16.
Reviewed by Judy P. Bolstad 《Medical reference services quarterly》2013,32(2):203-204
The status of library consortia has evolved over time in terms of their composition and alternative negotiating models. New purchasing models may allow improved library involvement in the acquisitions process and improved methods for meeting users' future needs. Ever-increasing costs of library resources and the need to reduce expenses make it necessary to continue the exploration of library consortia for group purchases. 相似文献
17.
Christina Torbert 《期刊图书馆员》2013,64(4):410-422
Publishers have been digitizing their journal backfiles and have been offering these backfiles for purchase to libraries in various packages. Serials and acquisitions librarians were surveyed to evaluate four types of backfile packages, and to determine the selection criteria being considered when making these purchases. 相似文献
18.
界定虚拟馆藏概念的内涵,将虚拟馆藏区分为电子资源和Internet信息资源两大类,借鉴传统图书馆的馆藏资源组织方法,从网页组织、逻辑组织两个层面研究电子资源(包括网页)的各种组织方式,认为电子资源的组织方式可归结为链接与整合两种形式,并根据我国电子资源组织的现状,提出切实可行的发展对策。 相似文献
19.
Carol Joyner Cramer 《期刊图书馆员》2013,64(1):87-97
This article reports on a talk delivered at the Mississippi State University Libraries eResource & Emerging Technologies Summit. The author introduces the concept of Demand-Driven Acquisition (DDA) for e-books and explains how it works. The author discusses predicting and controlling costs, as well as other implementation decisions. Finally, the author discusses the possibility of removing books from a DDA program and speculates on some of the effects of DDA on libraries and scholarly publishing. 相似文献
20.
谷玉荣 《大学图书情报学刊》2013,31(5):43-48
文章以苏州大学图书馆购买的外文电子全文期刊为基础,将其与SCI源刊分区列表进行对比,揭示苏州大学图书馆馆藏理、工、农、医类外文电子核心期刊保障情况,研究苏州大学图书馆电子期刊的建设需求及如何优化馆藏资源配置。 相似文献