1,592 research outputs found
Glasgow University at TRECVID 2006
In the first part of this paper we describe our experiments in the automatic and interactive search tasks of TRECVID 2006. We submitted five fully automatic runs, including a text baseline, two runs based on visual features, and two runs that combine textual and visual features in a graph model. For the interactive search, we have implemented a new video search interface with relevance feedback facilities, based on both textual and visual features.
The second part is concerned with our approach to the high-level feature extraction task, based on textual information extracted from speech recogniser and machine translation outputs. They were aligned with shots and associated with high-level feature references. A list of significant words was created for each feature, and it was in turn utilised for identification of a feature during the evaluation
Social norms and (de-)financialization: Japan’s and China’s divergent paths in consumer credit
Since the 1980s, American-led financialization promoting capital and labour mobility has influenced Asia, but the Japanese and Chinese trajectories in financialization of consumption (consumer credit development) have diverged, with the 1995–2013 contraction in Japan contrasting with the skyrocketing growth in China since 2010. I argue the divergence can be attributed to the varying levels of compatibility between American financial norms and their social norms, the different timings of their integration into the global economy (the influence of ‘embedded liberalism’ or neoliberalism), and the interests of key actors of each country. Anti-liberal Japanese elites reversed the financialization of consumption to preserve anti-capitalistic ‘industrious norms’ and strong attachments to intermediary organisations, which are the cornerstones of their dominance. In contrast, economic rationalism embedded in Chinese society since late imperial China, when capital and labour mobility was enhanced by removing fixed intermediary organisations considerably under autocracy, has facilitated China’s financialization of consumption
An inertial range length scale in structure functions
It is shown using experimental and numerical data that within the traditional
inertial subrange defined by where the third order structure function is linear
that the higher order structure function scaling exponents for longitudinal and
transverse structure functions converge only over larger scales, , where
has scaling intermediate between and as a function of
. Below these scales, scaling exponents cannot be determined for any
of the structure functions without resorting to procedures such as extended
self-similarity (ESS). With ESS, different longitudinal and transverse higher
order exponents are obtained that are consistent with earlier results. The
relationship of these statistics to derivative and pressure statistics, to
turbulent structures and to length scales is discussed.Comment: 25 pages, 9 figure
Boron-oxygen defect in Czochralski-silicon co-doped with gallium and boron
We study the boron-oxygen defect in Si co-doped with gallium and boron with the hole density 10 times higher than the boron concentration. Instead of the linear dependence of the defect density on the hole density observed in boron and phosphorus compensated silicon, we find a proportionality to the boron concentration. This indicates the participation of substitutional, rather than interstitial,boron in the defect complex. The measured defectformationrate constant is proportional to the hole density squared, which gives credit to latent defect models against defectreactions limited by the diffusion and trapping of oxygen dimers by boron atoms
Partial Supersymmetry Breaking and AdS4 Supermembrane
We consider partial spontaneous breaking of N=1 AdS4 supersymmetry OSp(1|4)
down to N=1, d=3 Poincare supersymmetry in the nonlinear realizations
framework. We construct the corresponding worldvolume Goldstone superfield
action and show that it describes the N=1 AdS4 supermembrane. It enjoys
OSp(1|4) supersymmetry realized as a field-dependent modification of N=1, d=3
superconformal symmetry and goes into the superfield action of ordinary N=1,
D=4 supermembrane in the flat limit. Its bosonic core is the Maldacena-type
conformally invariant action of the AdS4 membrane. We show how to reproduce the
latter action within a nonlinear realization of the AdS4 group SO(2,3). The
same universal nonlinear realizations techniques can be used to construct
conformally-invariant worldvolume actions for (d-2)-branes in generic AdSd
spaces.Comment: 14 pages, Late
Why is the DNA Denaturation Transition First Order?
We study a model for the denaturation transition of DNA in which the
molecules are considered as composed of a sequence of alternating bound
segments and denaturated loops. We take into account the excluded-volume
interactions between denaturated loops and the rest of the chain by exploiting
recent results on scaling properties of polymer networks of arbitrary topology.
The phase transition is found to be first order in d=2 dimensions and above, in
agreement with experiments and at variance with previous theoretical results,
in which only excluded-volume interactions within denaturated loops were taken
into account. Our results agree with recent numerical simulations.Comment: Revised version. To appear in Phys. Rev. Let
Denaturation of Heterogeneous DNA
The effect of heterogeneous sequence composition on the denaturation of
double stranded DNA is investigated. The resulting pair-binding energy
variation is found to have a negligible effect on the critical properties of
the smooth second order melting transition in the simplest (Peyrard-Bishop)
model. However, sequence heterogeneity is dramatically amplified upon adopting
a more realistic treatment of the backbone stiffness. The model yields features
of ``multi-step melting'' similar to those observed in experiments.Comment: 4 pages, LaTeX, text and figures also available at
http://matisse.ucsd.edu/~hw
Axiomatic Bargaining Theory on Opportunity Assignments
This paper discusses issues of axiomatic bargaining problems over opportunity assignments. The fair arbitrator uses the principle of "equal opportunity" for all players to make the recommendation on re- source allocations. A framework in such a context is developed and several classical solutions to standard bargaining problems are reformulated and axiomatically characterized. Working Paper 06-4
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