589 research outputs found
Isolating the chiral magnetic effect from backgrounds by pair invariant mass
Topological gluon configurations in quantum chromodynamics induce quark
chirality imbalance in local domains, which can result in the chiral magnetic
effect (CME)--an electric charge separation along a strong magnetic field.
Experimental searches for the CME in relativistic heavy ion collisions via the
charge-dependent azimuthal correlator () suffer from large
backgrounds arising from particle correlations (e.g. due to resonance decays)
coupled with the elliptic anisotropy. We propose differential measurements of
the as a function of the pair invariant mass (), by
restricting to high thus relatively background free, and by
studying the dependence to separate the possible CME signal from
backgrounds. We demonstrate by model studies the feasibility and effectiveness
of such measurements for the CME search.Comment: 16 preprint pages 5 figures. v2: added a test with a broad
"instanton/sphaleron" peak, and added clarifying texts; v3: added event-shape
engineering (and two new figures) and expanded discussions on the low
invariant mass region; v4: repeated cautionary discussions in introduction
and conclusion sections, published versio
An Interactive System for Generating Music from Moving Images
Moving images contain a wealth of information pertaining to motion. Motivated by the interconnectedness of music and movement, we present a framework for transforming the kinetic qualities of moving images into music. We developed an interactive software system that takes video as input and maps its motion attributes into the musical dimension based on perceptually grounded principles. The system combines existing sonification frameworks with theories and techniques of generative music. To evaluate the system, we conducted a two-part experiment. First, we asked participants to make judgements on video-audio correspondence from clips generated by the system. Second, we asked participants to give ratings for audiovisual works created using the system. These experiments revealed that 1) the system is able to generate music with a significant level of perceptual correspondence to the source video’s motion and 2) the system can effectively be used as an artistic tool for generative composition
Anti-Poverty Experience of Brazil and Its Enlightenment for China
Both China and Brazil are among the developing countries. There is some similarity on poverty in less developed countries, especially in the city poverty issue. To resolve the city poverty problem, we should decrease the gap of income distribution, increase the income of middle-class, protect the legal profit of rural floating population and ensure their equal treatment with the urban residents and set up the perfect guarantee system
PDPP:Projected Diffusion for Procedure Planning in Instructional Videos
In this paper, we study the problem of procedure planning in instructional
videos, which aims to make goal-directed plans given the current visual
observations in unstructured real-life videos. Previous works cast this problem
as a sequence planning problem and leverage either heavy intermediate visual
observations or natural language instructions as supervision, resulting in
complex learning schemes and expensive annotation costs. In contrast, we treat
this problem as a distribution fitting problem. In this sense, we model the
whole intermediate action sequence distribution with a diffusion model (PDPP),
and thus transform the planning problem to a sampling process from this
distribution. In addition, we remove the expensive intermediate supervision,
and simply use task labels from instructional videos as supervision instead.
Our model is a U-Net based diffusion model, which directly samples action
sequences from the learned distribution with the given start and end
observations. Furthermore, we apply an efficient projection method to provide
accurate conditional guides for our model during the learning and sampling
process. Experiments on three datasets with different scales show that our PDPP
model can achieve the state-of-the-art performance on multiple metrics, even
without the task supervision. Code and trained models are available at
https://github.com/MCG-NJU/PDPP.Comment: Accepted as a highlight paper at CVPR 202
Dangerous dietary supplements: Garcinia cambogia-associated hepatic failure requiring transplantation.
Commercial dietary supplements are marketed as a panacea for the morbidly obese seeking sustainable weight-loss. Unfortunately, many claims cited by supplements are unsupported and inadequately regulated. Most concerning, however, are the associated harmful side effects, often unrecognized by consumers. Garcinia cambogia extract and Garcinia cambogia containing products are some of the most popular dietary supplements currently marketed for weight loss. Here, we report the first known case of fulminant hepatic failure associated with this dietary supplement. One active ingredient in this supplement is hydroxycitric acid, an active ingredient also found in weight-loss supplements banned by the Food and Drug Administration in 2009 for hepatotoxicity. Heightened awareness of the dangers of dietary supplements such as Garcinia cambogia is imperative to prevent hepatoxicity and potential fulminant hepatic failure in additional patients
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