Personalisation and recommender systems in digital libraries

Widespread use of the Internet has resulted in digital libraries that are increasingly used by diverse communities of users for diverse purposes and in which sharing and collaboration have become important social elements. As such libraries become commonplace, as their contents and services become more varied, and as their patrons become more experienced with computer technology, users will expect more sophisticated services from these libraries. A simple search function, normally an integral part of any digital library, increasingly leads to user frustration as user needs become more complex and as the volume of managed information increases. Proactive digital libraries, where the library evolves from being passive and untailored, are seen as offering great potential for addressing and overcoming these issues and include techniques such as personalisation and recommender systems. In this paper, following on from the DELOS/NSF Working Group on Personalisation and Recommender Systems for Digital Libraries, which met and reported during 2003, we present some background material on the scope of personalisation and recommender systems in digital libraries. We then outline the working group’s vision for the evolution of digital libraries and the role that personalisation and recommender systems will play, and we present a series of research challenges and specific recommendations and research priorities for the field

Observation of Muon Neutrino Disappearance with the MINOS Detectors in the NuMI Neutrino Beam

This Letter reports results from the MINOS experiment based on its initial exposure to neutrinos from the Fermilab NuMI beam. The rates and energy spectra of charged current νμ interactions are compared in two detectors located along the beam axis at distances of 1 and 735 km. With 1.27×1020 120 GeV protons incident on the NuMI target, 215 events with energies below 30 GeV are observed at the Far Detector, compared to an expectation of 336±14 events. The data are consistent with νμ disappearance via oscillations with |Δm322|=2.74-0.26+0.44×10-3  eV2 and sin⁡2(2θ23)>0.87 (68% C.L.)

Governing social practice: technology and institutional change

In this article, we extend the concept of technology beyond the conventional understanding of systems and artifacts as embodiments of particular functionalities that are variously enacted in local settings. Technological artifacts or systems epitomize operational couplings that extend beyond the human-technology interface. Such couplings entail multiple, unobtrusive, back-staged links that evade human interpretation yet are critically involved in the reproduction and control of social relations. Cast in this light, technologies emerge as complex rationalized embodiments for structuring social relationships and, in this quality, complement and occasionally compete with institutional modes of governance. We explore these ideas in the empirical context of cultural memory organizations (e. g., libraries, archives, museums). As the outcome of the technological developments that have marked the field over the last two decades, the operations of memory institutions increasingly mingle with those of information aggregators and search engines. These developments reframe longstanding professional practices of memory organizations and, in this process, challenge their institutional mandate