12,861 research outputs found
Embracing the future: embedding digital repositories in the University of London. Briefing paper
This briefing paper captures the key findings and recommendations of
a study commissioned by the Joint Information Systems Committee
(JISC) on aspects of the strategic commitment of institutions to
repository sustainability.1 This project, labelled EMBRACE (EMBedding
Repositories And Consortial Enhancement) is aimed at enhancing the
functionality, inter-operability and extensibility of the SHERPA-LEAP
repository service, which currently supports the repositories of
thirteen University of London institutions. This briefing paper aims to
clarify the different motivations to use and invest in digital
repositories, and potential ways to address the challenges to
embedding these repositories in institutional strategy and daily
operation are highlighted. It is designed for use by Higher Education
Institutions (HEIs), who are encouraged to adapt the recommendations
to their specific context
Embracing the future: embedding digital repositories in the University of London
Digital repositories can help Higher Education Institutions (HEIs) to develop coherent and coordinated approaches to capture, identify, store and retrieve intellectual assets such as datasets, course material and research papers. With the advances of technology, an increasing number of Higher Education Institutions are implementing digital repositories. The leadership of these institutions, however, has been concerned about the awareness of and commitment to repositories, and their sustainability in the future.
This study informs a consortium of thirteen London institutions with an assessment of current awareness and attitudes of stakeholders regarding digital repositories in three case study institutions. The report identifies drivers for, and barriers to, the embedding of digital repositories in institutional strategy. The findings therefore should be of use to decision-makers involved in the development of digital repositories. Our approach was entirely based on consultations with specific groups of stakeholders in three institutions through interviews with specific individuals.
The research in this report was prepared for the SHERPA-LEAP Consortium and conducted by RAND Europe
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Channels, consumers and communication: online and offline communication in service consumption
This paper reports on a study that investigated consumer use of e-services in a multichannel context. To develop a deeper understanding of what makes consumers decide to use the online channel, and contrary to most HCI studies on the use of e-services that focus on the use of the online channel in relative isolation, this study examined consumer channel-choice beyond the instances of internet use. The consumption behaviour of its participants was investigated across channels in an in-depth qualitative study. The analysis of the elicited rich data focused specifically on the investigation of voluntary consumer movements between online and offline channels during the course of a consumption process. The results indicate that participants often use multiple channels in parallel and frequently switch between channels. Literature from marketing and consumer research was used as the perspective to explore the rationale for the complex and dynamic reported consumer behaviour
Ultrafast spectroscopy of single molecules
We present a single-molecule study on femtosecond dynamics in multichromophoric systems, combining fs pump-probe, emission-spectra and fluorescence-lifetime analysis. At the single molecule level a wide range of exciton delocalisation lengths and energy redistribution times is revealed. Next, two color pump-probe experiments are presented as a step to addressing ultrafast energy transfer in individual complexes
Comment on "Magnetic field effects on neutron diffraction in the antiferromagnetic phase of UPt3"
Moreno and Sauls [Phys. Rev. B 63, 024419 (2000)] have recently tried to
reanalyze earlier neutron scattering studies of the antiferromagnetic order in
UPt3 with a magnetic field applied in the basal plane. In their calculation of
the magnetic Bragg peak intensities, they perform an average over different
magnetic structures belonging to distinct symmetry representations. This is
incorrect. In addition, they have mistaken the magnetic field direction in one
of the experiments, hence invalidating their conclusions concerning the
experimental results.Comment: Revised 5 June 2001: Added group theory analysis and modified
discussion of S and K domain
Position-dependent shear-induced austenite-martensite transformation in double-notched TRIP and dual-phase steel samples
While earlier studies on transformation-induced-plasticity (TRIP) steels focused on the determination of the austenite-to-martensite decomposition in uniform deformation or thermal fields, the current research focuses on the determination of the local retained austenite-to-martensite transformation behaviour in an inhomogeneous yet carefully controlled shear-loaded region of double-notched TRIP and dual-phase (DP) steel samples. A detailed powder analysis has been performed to simultaneously monitor the evolution of the phase fraction and the changes in average carbon concentration of metastable austenite together with the local strain components in the constituent phases as a function of the macroscopic stress and location with respect to the shear band. The metastable retained austenite shows a mechanically induced martensitic transformation in the localized shear zone, which is accompanied by an increase in average carbon concentration of the remaining austenite due to a preferred transformation of the austenite grains with the lowest carbon concentration. At the later deformation stages the geometry of the shear test samples results in the development of an additional tensile component. The experimental strain field within the probed sample area is in good agreement with finite element calculations. The strain development observed in the low-alloyed TRIP steel with metastable austenite is compared with that of steels with the same chemical composition containing either no austenite (a DP grade) or stable retained austenite (a TRIP grade produced at a long bainitic holding time). The transformation of metastable austenite under shear is a complex interplay between the local microstructure and the evolving strain fields
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