176,511 research outputs found
Target optimisation studies for the European Spallation Source
No full textThe European Spallation Source (ESS) is one of Europe’s
biggest and most prestigious science projects. ESS
will be the world’s most powerful next generation neutron
spallation source for research with neutrons, providing a
unique tool for studies of the atomic structure and dynamics
of matter. In this paper we use GEANT4 simulations
to investigate the effects of spallation target material and
incident proton energy on the total neutron yield integrated
over the neutron energy and emission angle
E-journals in a networked environment : its impact on academic libraries in the digital millennium
No full textThis paper tries to describe the Advantages of E-journals in terms of Accessibility, Speed distribution and production, Subscription Cost, Multimedia Capabilities, Internal and External Links etc and also tries to find out the Technological, Socio-cultural and Economic Barriers. The issues like Refereeing, Copyright and Licensing, Longevity and Storage and recent trends in E-journal publication and its implication on Academic Libraries in selection and acquisition, Cataloguing, archiving, user's access, training and support to staff and users are discussed in this paper
Status of the European Spallation Source ESS AB, the instrument selection process, and a fundamental physics beamline at the ESS
No full textA general introduction to the status of the European Spallation Source ESS AB is given. As well as a general overview, the status of instruments and instrument design is presented. Particular attention is given to the instrument selection process, and how a proposal for a fundamental neutron physics beamline should be submitted. The contents of this presentation closely reflect the recently completed Technical Design Report for the ESS.Sponsors: Enigmass; European Spallation Source (ESS); Institut Laue-Langevin</p
THE ESS LINAC DESIGN
No full textAbstract The European Spallation Source (ESS) is a 5 MW, 2.5 MeV long pulse proton machine. It represents a big jump in power compare to the existing spallation facilities. The design phase is well under way, with the delivery of a Conceptual Design Report published in the beginning of 2012, and a Technical Design Report in December 2012. Why and how the 5 MW goal influences the parameter choices will be described
Evaluation of ESS <i>in vitro</i> and grafted ESS <i>in vivo</i><b>.</b>
No full text<p>ESS controls and ESS with mDPC-GFP were examined <i>in vitro</i> (a–c) and <i>in vivo</i> (d–f). There were no morphological differences between ESS models <i>in vitro</i> (a). After grafting, hair follicles were observed in ESS with mDPC-GFP, and not in controls (d). Significant decreases in ESS area over time were observed <i>in vitro</i> (b) and <i>in vivo</i> (e). Differences between groups were only observed at 6 weeks after grafting (e). Magnified <i>en face</i> images of the ESS surface show similar convoluted surfaces in both conditions <i>in vitro</i> (c), but only ESS controls developed dermatoglyphics after grafting (f). Scale bars in (a, d) = 100 µm. Scale bars in (c, f) = 1 mm.</p
Falling through the (cultural) gaps?
No full textIn this paper we report findings of a study of online participation by culturally diverse participants in a distance adult education course offered in Canada, and examine two of the study’s early findings. First, we explore both the historical and cultural origins of “cyberculture values” as manifested in our findings, using the notions of explicit and implicit enforcement of those values. Second, we examine the notion of “cultural gaps” between participants in the course and the potential consequences for online communication successes and difficulties. We also discuss theoretical perspectives from Sociolinguistics, Applied Linguistics, Genre and Literacy Theory and Aboriginal Education that may shed further light on “cultural gaps” in online communications. Finally, we identify the need for additional research, primarily in the form of larger scale comparisons across cultural groups of patterns of participation and interaction, but also in the form of case studies that can be submitted to microanalyses of the form as well as the content of communicator’s participation and interaction online
Optimizing the exponential sine sweep (ESS) signal for in situ measurements on noise barriers
No full textThe measurement of sound reflection and airborne sound insulation of noise barriers in based on the acquisition of impulse responses by means of digital devices. The most widely used methods employ MLS (Maximum Length Sequence) or ESS (Exponential Sine Sweep) as test signals. The theory behind MLS generation and use is well developed and does not involve computational problems. That is why in CEN/TS 1793-5:2003 an MLS signal is recommended. During the European project QUIESST also an ESS signal was applied. The ESS signal has some advantages over MLS, such as a better signal to noise ratio (SNR) and a robust non-linearity rejection. Anyway, the generation of an ESS signal and the subsequent analysis of impulse responses involve some problems whose solutions are not yet common practice. These solutions are discussed here and practical application examples are presented
Vulnerabilities as monsters: The cultural foundations of computer security (extended abstract)
No full textContains fulltext :
35138.pdf (Publisher’s version ) (Open Access)ECAP 20064 p
European Spallation Source Technical Design Report
No full textESS, the European Spallation Source, will be a major user facility at which researchers from academia and industry will investigate scientific questions using neutron beams. Neutron methods provide insights about the molecular building blocks of matter not available by other means. They are used for both basic and applied research. ESS will be a slow neutron source of unparallelled power and scientific performance. It will deliver its first protons to a solid, rotating tungsten target in 2019, which will in turn generate neutrons for delivery to an initial suite of seven neutron scattering research instruments. ESS will reach its full design specifications in 2025, with a suite of 22 research instruments. The publication of the Technical Design Report in 2013 represents an important milestone for the ESS project, marking its readiness to move forward with construction activities. This executive overview provides a brief summary of the key insights and findings of the Technical Design Report
ESS++: a C++ objected-oriented algorithm for Bayesian stochastic search model exploration
No full textSummary:ESS++ is a C++ implementation of a fully Bayesian variable selection approach for single and multiple response linear regression. ESS++ works well both when the number of observations is larger than the number of predictors and in the ‘large p, small n’ case. In the current version, ESS++ can handle several hundred observations, thousands of predictors and a few responses simultaneously. The core engine of ESS++ for the selection of relevant predictors is based on Evolutionary Monte Carlo. Our implementation is open source, allowing community-based alterations and improvements.
Availability: C++ source code and documentation including compilation instructions are available under GNU licence at http://bgx.org.uk/software/ESS.html
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