Cross-modal supervised learning for better acoustic representations. (arXiv:1911.07917v1 [cs.CV])

Obtaining large-scale human-labeled datasets to train acoustic representation models is a very challenging task. On the contrary, we can easily collect data with machine-generated labels. In this work, we propose to exploit machine-generated labels to learn better acoustic representations, based on the synchronization between vision and audio. Firstly, we collect a large-scale video dataset with…

Analysis on image recovery for digital Fresnel hologram with aliased fringe generated from self-similarity of point spread function. (arXiv:1911.07997v1 [physics.optics])

We investigate the aliasing phenomenon for digital Fresnel hologram with an enhanced numerical aperture (NA). The enhanced-NA digital Fresnel hologram acquired computationally or optically at a closer distance from the object has an aliased fringe generated by undersampling process of the Fresnel prefactor called as a point spread function. The point spread function shows a…

Monte Carlo Simulations of DNA Damage and Cellular Response to Hadron Irradiation. (arXiv:1911.08000v1 [q-bio.QM])

Numerical simulations are performed on a stochastic model based on Monte Carlo damage simulation process and Markov Chain Monte Carlo techniques to investigate the formation and evaluation of isolated and multiple DNA damage and cellular survival by light ionizing radiation in a colony of tumour cells. The contribution of the local clustering of the strand…

Algorithms for Solving Misalignment Issues in Penalized PET/CT Reconstruction Using Anatomical Priors. (arXiv:1911.08012v1 [physics.med-ph])

Two algorithms for solving misalignment issues in penalized PET/CT reconstruction using anatomical priors are proposed. Both approaches are based on a recently published joint motion estimation and image reconstruction method. The first approach deforms the anatomical image to align it with the functional one while the second approach deforms both images to align them with…

Time-dependent approaches to open quantum systems. (arXiv:1911.08026v1 [nucl-th])

Couplings of a system to other degrees of freedom (that is, environmental degrees of freedom) lead to energy dissipation when the number of environmental degrees of freedom is large enough. Here we discuss quantal treatments for such energy dissipation. To this end, we discuss two different time-dependent methods. One is to introduce an effective time-dependent…

Axion-Field-Enabled Nonreciprocal Thermal Radiation in Weyl Semimetals. (arXiv:1911.08035v1 [physics.optics])

Objects around us constantly emit and absorb thermal radiation. The emission and absorption processes are governed by two fundamental radiative properties: emissivity and absorptivity.For reciprocal systems, the emissivity and absorptivity are restricted to be equal by Kirchhoff’s law of thermal radiation. This restriction limits the degree of freedom to control thermal radiation and contributes to…

Observation of Edge Solitons in Photonic Graphene. (arXiv:1911.08038v1 [physics.optics])

Edge states emerge in diverse areas of science, offering new opportunities for the development of novel electronic or optoelectronic devices, sound and light propagation controls in acoustics and photonics. Previous experiments on edge states and exploration of topological phases in photonics were carried out mostly in linear regimes, but the current belief is that nonlinearity…

Deligne Categories in Lattice Models and Quantum Field Theory, or Making Sense of $O(N)$ Symmetry with Non-integer $N$. (arXiv:1911.07895v1 [hep-th])

When studying quantum field theories and lattice models, it is often useful to analytically continue the number of field or spin components from an integer to a real number. In spite of this, the precise meaning of such analytic continuations has never been fully clarified, and in particular the symmetry of these theories is obscure.…

Cooperative Multiple-Access Channels with Distributed State Information. (arXiv:1911.07899v1 [cs.IT])

This paper studies a memoryless state-dependent multiple access channel (MAC) where two transmitters wish to convey a message to a receiver under the assumption of causal and imperfect channel state information at transmitters (CSIT) and imperfect channel state information at receiver (CSIR). In order to emphasize the limitation of transmitter cooperation between physically distributed nodes,…