The RHIC azimuth quadrupole: "perfect liquid" or gluonic radiation?

Large elliptic flow at RHIC seems to indicate that ideal hydrodynamics provides a good description of Au-Au collisions, at least at the maximum RHIC energy. The medium formed has been interpreted as a nearly perfect (low-viscosity) liquid, and connections have been made to gravitation through string theory. Recently, claimed observations of large flow fluctuations comparable to participant eccentricity fluctuations seem to confirm the ideal hydro scenario. However, determination of the azimuth quadrupole with 2D angular autocorrelations, which accurately distinguish ``flow'' (quadrupole) from ``nonflow'' (minijets), contradicts conventional interpretations. Centrality trends may depend only on the initial parton geometry, and methods used to isolate flow fluctuations are sensitive instead mainly to minijet correlations. The results presented in this paper suggest that the azimuth quadrupole may be a manifestation of gluonic multipole radiation.Comment: 11 pages, 6 figure

The unseen and unacceptable face of digital libraries

The social and organisational aspects of digital libraries (DLs) are often overlooked, but this paper reviews how they can affect users' awareness and acceptance of DLs. An analysis of research conducted within two contrasting domains (clinical and academic) is presented which highlights issues of user interactions, work practices and organisational social structures. The combined study comprises an analysis of 98 in-depth interviews and focus groups with lecturers, librarians and hospital clinicians. The importance of current and past roles of the library, and how users interacted with it, are revealed. Web-based DLs, while alleviating most library resource and interaction problems, require a change in librarians' and DL designers' roles and interaction patterns if they are to be implemented acceptably and effectively. Without this role change, users will at best be unaware of these digital resources and at worst feel threatened by them. The findings of this paper highlight the importance of DL design and implementation of the social context and supporting user communication (i.e., collaboration and consultation) in information searching and usage activities. © Springer-Verlag 2004

Greek education and composite citations of Homer

No abstract available

Digital libraries in a clinical setting: Friend or foe?

Clinical requirements for quick accessibility to reputable, up-to-date information have increased the importance of web accessible digital libraries for this user community. To understand the social and organisational impacts of ward-accessible digital libraries (DLs) for clinicians, we conducted a study of clinicians. perceptions of electronic information resources within a large London based hospital. The results highlight that although these resources appear to be a relatively innocuous means of information provision (i.e. no sensitive data) social and organisational issues can impede effective technology deployment. Clinical social structures, which produce information. and technology. hoarding behaviours can result from poor training, support and DL usability

Acceptability of medical digital libraries

Evidenced-based medicine has increased the importance of quick accessibility to reputable, upto-date information. Web-accessible digital libraries (DLs) on the wards can address the demand for such information. The use and acceptability of these resources has, however, been lower than expected due to a poor understanding of the context of use. To appreciate the social and organizational impacts of ward-accessible DLs for clinicians, results of a study within a large London-based hospital are presented. In-depth interviews and focus groups with 73 clinicians (from pre-registration nurses to surgeons) were conducted, and the data analysed using the grounded theory method. It was found that clinical social structures interact with inadequate training provision (for senior clinicians), technical support and DL usability to produce a knowledge gap between junior and senior staff, resulting in information – and technology – hoarding behaviours. Findings also detail the perceived effectiveness of traditional and digital libraries and the impact of clinician status on information control and access. One important conclusion is that increased DL usability and adequate support and training for senior clinicians would increase perceptions of DLs as support for, rather than replacement of, their clinical expertise. © 2002, The Continuum Publishing Group Ltd. All rights reserved

An investigation of the strength of aluminum wire used in integrated circuits

Microloop pull test is developed to stress wire loops in situ until failure. The applied loads, the nature of the fracture, and its location are recorded. This test also stresses the wire bonds