30,875 research outputs found
Applying IRON to a Virtual Community Scenario
Normative systems (norms) have been widely proposed as a technique for coordinating multi-agent systems (MAS). The automated synthesis of norms is a complex problem that remains open. IRON (Intelligent Robust On-line Norm synthesis mechanism) is a novel mechanism for the on-line automated synthesis of norms for MASs. IRON produces conflict-free norms that characterise necessary conditions for coordination, without over-regulation. In the past, IRON successfully regulated a traffic scenario even in the presence of non-compliant agents. In this paper, we apply IRON to synthesise norms for a virtual community scenario, where agents are users that share contents within the community. As a result, IRON synthesises norms that prevent users from uploading undesirable contents (i.e., those that users complain about). © 2013 The authors and IOS Press. All rights reserved.This work was funded by AT (CONSOLIDER CSD2007-0022), EVE (TIN2009-14702-C02-01/02), COR (TIN2012-38876-C02-01/02), MECER (201250E053) and the Generalitat of Catalunya (2009-SGR-1434).Peer Reviewe
Structuralism as a Response to Skepticism
Cartesian arguments for global skepticism about the external world start from the premise that we cannot know that we are not in a Cartesian scenario such as an evil-demon scenario, and infer that because most of our empirical beliefs are false in such a scenario, these beliefs do not constitute knowledge. Veridicalist responses to global skepticism respond that arguments fail because in Cartesian scenarios, many or most of our empirical beliefs are true. Some veridicalist responses have been motivated using verificationism, externalism, and coherentism. I argue that a more powerful veridicalist response to global skepticism can be motivated by structuralism, on which physical entities are understood as those that play a certain structural role. I develop the structuralist response and address objections
Early light curves for Type Ia supernova explosion models
Upcoming high-cadence transient survey programmes will produce a wealth of
observational data for Type Ia supernovae. These data sets will contain
numerous events detected very early in their evolution, shortly after
explosion. Here, we present synthetic light curves, calculated with the
radiation hydrodynamical approach Stella for a number of different explosion
models, specifically focusing on these first few days after explosion. We show
that overall the early light curve evolution is similar for most of the
investigated models. Characteristic imprints are induced by radioactive
material located close to the surface. However, these are very similar to the
signatures expected from ejecta-CSM or ejecta-companion interaction. Apart from
the pure deflagration explosion models, none of our synthetic light curves
exhibit the commonly assumed power-law rise. We demonstrate that this can lead
to substantial errors in the determination of the time of explosion. In
summary, we illustrate with our calculations that even with very early data an
identification of specific explosion scenarios is challenging, if only
photometric observations are available.Comment: 15 pages, 14 figures, 3 tables, accepted for publication in MNRA
Assessing the Utility of Procedural Modeling for the Urban Planning Discipline: CityEngine and Missing Middle Housing
In recent years, procedural modeling techniques have been introduced to the urban planning discipline. By enabling the quick generation of design alternatives, these methods have the potential to expedite the public participation process. In this study, we explore ArcGIS CityEngine, an Esri procedural modeling software, and its application for depicting new missing middle housing developments in San Luis Obispo, California. Missing middle housing is an abstract planning concept and the public may benefit from 3D visualizations of the typology contextualized within their own neighborhood. To this end, we procedurally model two existing missing middle developments in San Luis Obispo and transfer them to three alternative contexts. Our team consists of two planning students with no programming background, granting us a relevant perspective on the experience for planning professionals. Through this exercise, we determined that procedural modeling can accelerate the design process when applied to a fitting scenario after the initial training period is complete
Superatom Representation of High-TC Superconductivity Revisited
A "super-atom" conceptual interface between chemistry and physics is proposed
in order to assist in the search for higher TC superconductors. High-TC
superconductivity HTSC is articulated as the entanglement of two disjoint
electronic manifolds in the vicinity of a common Fermi energy. The resulting
HTSC ground state couples near-degenerate protected local "super-atom" states
to virtual magnons in an antiferromagnetic AFM embedding. The composite Cooper
pairs emerge as the interaction particles for virtual magnons mediated
"self-coherent entanglement" of super-atom states. A H\"uckel type resonating
valence bond RVB formalism is employed in order to illustrate the real-space
Cooper pairs as well as their delocalization and Bose Einstein condensation BEC
on a ring of super-atoms. The chemical potential \mu(BEC) for Cooper pairs
joining the condensate is formulated in terms of the super-exchange
interaction, and consequently the TC in terms of the Ne\'el temperature. A
rationale for the robustness of the HTSC ground state is proposed: achieving
local maximum "electron correlation entropy" at the expense of non-local phase
rigidity.Comment: 25 pages, 2 figures. arXiv admin note: substantial text overlap with
arXiv:1007.411
Design and semantics of form and movement (DeSForM 2006)
Design and Semantics of Form and Movement (DeSForM) grew from applied research exploring emerging design methods and practices to support new generation product and interface design. The products and interfaces are concerned with: the context of ubiquitous computing and ambient technologies and the need for greater empathy in the pre-programmed behaviour of the ‘machines’ that populate our lives. Such explorative research in the CfDR has been led by Young, supported by Kyffin, Visiting Professor from Philips Design and sponsored by Philips Design over a period of four years (research funding £87k). DeSForM1 was the first of a series of three conferences that enable the presentation and debate of international work within this field: • 1st European conference on Design and Semantics of Form and Movement (DeSForM1), Baltic, Gateshead, 2005, Feijs L., Kyffin S. & Young R.A. eds. • 2nd European conference on Design and Semantics of Form and Movement (DeSForM2), Evoluon, Eindhoven, 2006, Feijs L., Kyffin S. & Young R.A. eds. • 3rd European conference on Design and Semantics of Form and Movement (DeSForM3), New Design School Building, Newcastle, 2007, Feijs L., Kyffin S. & Young R.A. eds. Philips sponsorship of practice-based enquiry led to research by three teams of research students over three years and on-going sponsorship of research through the Northumbria University Design and Innovation Laboratory (nuDIL). Young has been invited on the steering panel of the UK Thinking Digital Conference concerning the latest developments in digital and media technologies. Informed by this research is the work of PhD student Yukie Nakano who examines new technologies in relation to eco-design textiles
Collaboration in the Semantic Grid: a Basis for e-Learning
The CoAKTinG project aims to advance the state of the art in collaborative mediated spaces for the Semantic Grid. This paper presents an overview of the hypertext and knowledge based tools which have been deployed to augment existing collaborative environments, and the ontology which is used to exchange structure, promote enhanced process tracking, and aid navigation of resources before, after, and while a collaboration occurs. While the primary focus of the project has been supporting e-Science, this paper also explores the similarities and application of CoAKTinG technologies as part of a human-centred design approach to e-Learning
Spooky Action At A Distance
The question posed is “Can I experience remote human intimacy?” This is only posed after a network of computer code, images and entities have worked through the studio apparatus. These objects only materialize after khaos, the gap, the chasm has been recognized and a remote position has been realized. The work is about examining this constellation of objects and processes in their aspiration to answer the stated question in the affirmative. The resulting presentation is an experience of the failures and illuminations of both the material and the work
SciTech News Volume 70, No. 4 (2016)
Columns and Reports
From the Editor 3
Division News
Science-Technology Division 4
SLA Annual Meeting 2016 Report (S. Kirk Cabeen Travel Stipend Award recipient) 6
Reflections on SLA Annual Meeting (Diane K. Foster International Student Travel Award recipient) 8
SLA Annual Meeting Report (Bonnie Hilditch International Librarian Award recipient)10
Chemistry Division 12
Engineering Division 15
Reflections from the 2016 SLA Conference (SPIE Digital Library Student Travel Stipend recipient)15
Fundamentals of Knowledge Management and Knowledge Services (IEEE Continuing Education Stipend recipient) 17
Makerspaces in Libraries: The Big Table, the Art Studio or Something Else? (by Jeremy Cusker) 19
Aerospace Section of the Engineering Division 21
Reviews
Sci-Tech Book News Reviews 22
Advertisements
IEEE 17
WeBuyBooks.net 2
- …