47,973 research outputs found
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âIâll just Google it!â: Should lawyersâ perceptions of Google inform the design of electronic legal resources?
Lawyers, like many user groups, regularly use Google to find information for their work. We present results of a series of interviews with academic and practicing lawyers, where they discuss in what situations they use various electronic resources and why. We find lawyers use Google due to a variety of factors, many of which are related to the need to find information quickly. Lawyers also talk about Google with a certain affection not demonstrated when discussing other resources. Although we can design legal resources to emulate Google or design them based on factors perceived to make Google successful, we suggest this is unlikely to better support legal information-seeking. Instead, we suggest the importance of taking a number of inter-related tradeoffs, related to the factors identified in our study, into account when designing electronic legal resources to help ensure they are useful, usable and used
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This is what I'm doing and why: reflections on a think-aloud study of digital library users' information behaviour
Many user-centred studies of digital libraries include a think-aloud element â where users are asked to verbalise their thoughts, interface actions and sometimes their feelings whilst using digital libraries to help them complete one or more information tasks. These studies are usually conducted with the purpose of identifying usability issues related to the system(s) used or understanding aspects of usersâ information behaviour. However, few of these studies present detailed accounts of how their think-aloud data was collected and analysed or provide detailed reflection on their methodologies. In this paper, we discuss and reflect on the decisions made when planning and conducting a think-aloud study of lawyersâ interactive information behaviour. Our discussion is framed by Blandford et al.âs PRET A Rapporter (âready to reportâ) framework â a framework that can be used to plan, conduct and describe user-centred studies of digital library use from an information work perspective
Eyes in the sky: Interactions between AGB winds and the interstellar magnetic field
We aim to examine the role of the interstellar magnetic field in shaping the
extended morphologies of slow dusty winds of Asymptotic Giant-branch (AGB)
stars in an effort to pin-point the origin of so-called eye shaped CSE of three
carbon-rich AGB stars. In addition, we seek to understand if this pre-planetary
nebula (PN) shaping can be responsible for asymmetries observed in PNe.
Hydrodynamical simulations are used to study the effect of typical interstellar
magnetic fields on the free-expanding spherical stellar winds as they sweep up
the local interstellar medium (ISM). The simulations show that typical Galactic
interstellar magnetic fields of 5 to 10 muG, are sufficient to alter the
spherical expanding shells of AGB stars to appear as the characteristic eye
shape revealed by far-infrared observations. The typical sizes of the simulated
eyes are in accordance with the observed physical sizes. However, the eye
shapes are of transient nature. Depending on the stellar and interstellar
conditions they develop after 20,000 to 200,000yrs and last for about 50,000 to
500,000 yrs, assuming that the star is at rest relative to the local
interstellar medium. Once formed the eye shape will develop lateral outflows
parallel to the magnetic field. The "explosion" of a PN in the center of the
eye-shaped dust shell gives rise to an asymmetrical nebula with prominent
inward pointing Rayleigh-Taylor instabilities.
Interstellar magnetic fields can clearly affect the shaping of wind-ISM
interaction shells. The occurrence of the eyes is most strongly influenced by
stellar space motion and ISM density. Observability of this transient phase is
favoured for lines-of-sight perpendicular to the interstellar magnetic field
direction. The simulations indicate that shaping of the pre-PN envelope can
strongly affect the shape and size of PNe.Comment: Accepted for publication in A&A. Final version will contain animated
result
Development of deployable structures for large space platform systems, volume 2
Ground test article design, deployable volumes concept development, habitat and hangar conceptual designs, and deployable volumes analyses are addressed
Development of deployable structures for large space platform systems. Volume 1: Executive summary
Candidate deployable linear platform system concepts suitable for development to technology readiness by 1986 are reviewed. The systems concepts were based on trades of alternate deployable/retractable structure concepts, integration of utilities, and interface approaches for docking and assembly of payloads and subsystems. The deployable volume studies involved generation of concepts for deployable volumes which could be used as unpressurized or pressurized hangars, habitats and interconnecting tunnels. Concept generation emphasized using flexible materials and deployable truss structure technology
Development of deployable structures for large space platform systems, part 1
Eight deployable platform design objectives were established: autodeploy/retract; fully integrated utilities; configuration variability; versatile payload and subsystem interfaces; structural and packing efficiency; 1986 technology readiness; minimum EVA/RMS; and Shuttle operational compatibility
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Learning in Game Jams: A Case Study of the GLASS Summer School
Game jams provide exciting opportunities for education and research. In this session we describe the GLASS Summer School, sharing videos where students talk about their experiences, and sharing results from our learning survey. We discuss questions such as what are optimal conditions for game jams? How can we measure learning
Non-equilibrium dynamics of Andreev states in the Kondo regime
The transport properties of a quantum dot coupled to superconducting leads
are analyzed. It is shown that the quasiparticle current in the Kondo regime is
determined by the non-equilibrium dynamics of subgap states (Andreev states)
under an applied voltage. The current at low bias is suppressed exponentially
for decreasing Kondo temperature in agreement with recent experiments. We also
predict novel interference effects due to multiple Landau-Zener transitions
between Andreev states.Comment: Revtex4, 4 pages, 4 figure
Interregional Analysis of Interstate Dairy Compacts
Livestock Production/Industries, Marketing,
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