Zobrazeno 1 - 10
of 1 617
pro vyhledávání: '"Póo, P."'
Autor:
Liang, Li, Zhang, Xiao, Wang, Chuan, Liu, Jie, Fan, Longzhen, Liang, Chengpeng, Liang, Liang, Li, Feifei, Wu, Qi, Poo, Yin
Nonreciprocity, which denotes the asymmetric or even unidirectional transmission of light, constitutes the cornerstone of modern photonic circuits. In the realm of photonic devices, it has been widely utilized in isolators, circulators and so on. Rec
Externí odkaz:
http://arxiv.org/abs/2405.00033
Facial Expression Recognition (FER) is a machine learning problem that deals with recognizing human facial expressions. While existing work has achieved performance improvements in recent years, FER in the wild and under challenging conditions remain
Externí odkaz:
http://arxiv.org/abs/2306.09626
Autor:
Park, Poo-Sung
Let $k \geq 3$. If a multiplicative function $f$ satisfies \[ f(a_1^3 + a_2^3 + \cdots + a_k^3) = f(a_1^3) + f(a_2^3) + \cdots + f(a_k^3) \] for all $a_1, a_2, \ldots, a_k \in \mathbb{N}$, then $f$ is the identity function. The set of positive cubes
Externí odkaz:
http://arxiv.org/abs/2302.07461
Autor:
Wang, Yanan, Wang, Hai-Xiao, Liang, Li, Fan, Longzhen, Lin, Zhi-Kang, Li, Feifei, Zhang, Xiao, Luan, Pi-Gang, Poo, Yin, Jiang, Jian-Hua, Guo, Guang-Yu
Photonic topological phases offering unprecedented manipulation of electromagnetic waves have attracted much research interest which, however, have been mostly restricted to a single band gap. Here, we report on the experimental discovery of hybrid t
Externí odkaz:
http://arxiv.org/abs/2207.05712
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Akademický článek
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Topological phases of matter are featured with exotic edge states. However, the fractional topological numbers at edges, though predicted long ago by Jackiw and Rebbi, remain elusive in topological photonic systems. Here, we report on the observation
Externí odkaz:
http://arxiv.org/abs/2203.00206
Autor:
Park, Poo-Sung
If a multiplicative function $f$ is commutable with a quadratic form $x^2+xy+y^2$, i.e., \[ f(x^2+xy+y^2) = f(x)^2 + f(x)\,f(y) + f(y)^2, \] then $f$ is the identity function. In other hand, if $f$ is commutable with a quadratic form $x^2-xy+y^2$, th
Externí odkaz:
http://arxiv.org/abs/2202.10653
This paper presents a new approach for the estimation and inference of the regression parameters in a panel data model with interactive fixed effects. It relies on the assumption that the factor loadings can be expressed as an unknown smooth function
Externí odkaz:
http://arxiv.org/abs/2201.11482
We discuss the problem of when a continuous map between topological spaces induces a continuous function between their respective hyperspaces. We characterize the continuity of the induced function in the case of the Fell and Attouch-Wets hyperspaces
Externí odkaz:
http://arxiv.org/abs/2104.12904