Relay-Linking Models for Prominence and Obsolescence in Evolving Networks

The rate at which nodes in evolving social networks acquire links (friends, citations) shows complex temporal dynamics. Preferential attachment and link copying models, while enabling elegant analysis, only capture rich-gets-richer effects, not aging and decline. Recent aging models are complex and heavily parameterized; most involve estimating 1-3 parameters per node. These parameters are intrinsic: they explain decline in terms of events in the past of the same node, and do not explain, using the network, where the linking attention might go instead. We argue that traditional characterization of linking dynamics are insufficient to judge the faithfulness of models. We propose a new temporal sketch of an evolving graph, and introduce several new characterizations of a network's temporal dynamics. Then we propose a new family of frugal aging models with no per-node parameters and only two global parameters. Our model is based on a surprising inversion or undoing of triangle completion, where an old node relays a citation to a younger follower in its immediate vicinity. Despite very few parameters, the new family of models shows remarkably better fit with real data. Before concluding, we analyze temporal signatures for various research communities yielding further insights into their comparative dynamics. To facilitate reproducible research, we shall soon make all the codes and the processed dataset available in the public domain

Utilizing scale-free networks to support the search for scientific publications

When searching for scientific publications, users today often rely on search engines such as Yahoo.com. Whereas searching for publications whose titles are known is considered to be an easy task, users who are looking for important publications in research fields they are unfamiliar with face greater diffiulties since few or no indications of a publication’s importance to the respective fields are given. In this paper we investigate the application of the theory of scale-free networks to derive importance indicators for a collection of publications. A tool was developed to support the user in his publication search by visualizing the publications’ importance indicators derived from the number of citations received and the publication’s age as well as visualizing part of the citation network structure. A preliminary user study indicates the utility of our approach and warrants further research in that direction

Document Delivery and Resource Sharing: Global Perspectives

This publication is intended to provide librarians, library practitioners, as well as teachers, researchers, and students of universities and research organizations and other interested parties, a foundation in resource sharing principles, practices and management. This publication provides an overview of where things stand today with resource sharing, including key trends, challenges, opportunities, and priorities. The publication seeks to address international resource sharing, exploring the current state of European and international resource sharing systems and the governing laws and regulations and includes case studies and best practices from various countries

Exploring manuscripts: sharing ancient wisdoms across the semantic web

Recent work in digital humanities has seen researchers in-creasingly producing online editions of texts and manuscripts, particularly in adoption of the TEI XML format for online publishing. The benefits of semantic web techniques are un-derexplored in such research, however, with a lack of sharing and communication of research information. The Sharing Ancient Wisdoms (SAWS) project applies linked data prac-tices to enhance and expand on what is possible with these digital text editions. Focussing on Greek and Arabic col-lections of ancient wise sayings, which are often related to each other, we use RDF to annotate and extract seman-tic information from the TEI documents as RDF triples. This allows researchers to explore the conceptual networks that arise from these interconnected sayings. The SAWS project advocates a semantic-web-based methodology, en-hancing rather than replacing current workflow processes, for digital humanities researchers to share their findings and collectively benefit from each other’s work

Special Libraries, December 1980

Volume 71, Issue 12https://scholarworks.sjsu.edu/sla_sl_1980/1010/thumbnail.jp

Research support at University of Porto libraries

This case study describes the research support services provided by the libraries of the University of Porto (U.Porto). The university is composed of 14 teaching units (each with its faculty library), and each faculty has a wide range of research units. U.Porto has a high research activity, which compels libraries to keep pace with the evolving researcher needs, adapting and creating new services that respond to those requirements. From a global perspective, the overall mission of these libraries is to ensure and promote access to information resources made available by U.Porto to the academic and scientific community, both in physical and electronic supports. More specifically, this case will detail the services already provided in the context of research support, ranging from specialized training sessions in scientific publishing, reference management software, or search in bibliographic databases to the creation of thematic guides, support on the publication of scientific journals from within the university, and bibliometric studies. (c) 2021, IGI Global. All rights reserved

Special Libraries, September 1978

Volume 69, Issue 9https://scholarworks.sjsu.edu/sla_sl_1978/1007/thumbnail.jp

University of Tennessee Library Lectures, 1976-1978 (no. 28-30)

Copyright has been a much debated issue of the mid-1970s. Julius Marke here addresses the inherent conflict between the rights of the creator and the needs of the users of intellectual property. He identifies the problems of libraries as disseminators of information and the possible impact of new federal copyright legislation. In lecture twenty-nine, Doralyn Hickey defines a central problem in American librarianship as a struggle with the dilemma of providing relevant collections and services while at the same time preserving the materials entrusted to its care so they may be available for serious research and investigation by future generations. Her approach to this problem encompasses a dialectic analysis of American bibliographic history. The thirtieth lecture in the series celebrates the contributions which a librarian may make to research, especially in an interdisciplinary field. Specifically, Dena Epstein describes her twenty-year search for information on black folk music in America prior to the Civil War. Her discussion of sources which may be used across disciplines and her hard-won but evident success should serve as encouragement to librarians interested in research