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Robust video denoising with sparse and dense noise modelings

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Science China(Information Sciences) 2018年第1期61卷 270-272页

作者： Guiping SHEN Zhi HAN xi'ai chen Yandong TANG State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of Sciences University of Chinese Academy of Sciences

Videos can be contaminated by noise even when captured by high-quality *** video data has both spatial and temporal redundancies,low rank factorization has been ***,most denoising methods relied on a single statistical distribution to model noise,such as Gaussian distribution[1,2].Ji et al.[3]proposed a low rank matrix completion(LRMC)relying on

关键词： Robust video denoising with sparse and dense noise modelings Figure

Nonreciprocal transition between two indirectly coupled energy levels

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Frontiers of physics 2022年第4期17卷 153-161页

作者： Xun-Wei Xu Hai-Quan Shi ai-xi chen Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Key Laboratory for Matter Microstructure and Function of Hunan ProvinceDepartment of Physics and Synergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 410081China Department of Applied Physics East China Jiaotong UniversityNanchang 330013China Department of Physics Zhejiang Sci-Tech UniversityHangzhou 310018China

We propose a theoretical scheme to realize nonreciprocal transition between two energy levels that can not coupled *** they are coupled indirectly by two auxiliary levels with a cyclic four-level configuration,and the four transitions in the cyclic configuration are controlled by external *** indirectly transition become nonreciprocal when the time reversal symmetry of the system is broken by the synthetic magnetic flux,i.e.,the total phase of the external driving fields through the cyclic four-level *** nonreciprocal transition can be identified by the elimination of a spectral line in the spontaneous emission *** work introduces a feasible way to observe nonreciprocal transition in a wide range of multi-level systems,including natural atoms or ions with parity symmetry.

关键词： nonreciprocal transition time reversal symmetry synthetic magnetic flux spontaneous emission spectrum

Improved nuclear mass formula with an additional term from the Fermi gas model

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Nuclear Science and Techniques 2024年第5期35卷 131-138页

作者： xiao-Yu Xu Li Deng ai-xi chen Hang Yang Amir Jalili Han-Kui Wang School of Science Zhejiang Sci-Tech UniversityHangzhou 310018China

Nuclear mass is a fundamental property of nuclear physics and a necessary input in nuclear *** to the complexity of atomic nuclei and nonperturbative strong interactions,conventional physical models cannot completely describe nuclear binding *** this study,the mass formula was improved by considering an additional term from the Fermi gas *** nuclear masses in the Atomic Mass Evaluation Database were reproduced with a root-mean-square deviation(RMSD)of -1.86 MeV(1.92 MeV).The new mass formula exhibits good performance in the neutron-rich nuclear *** RMSD decreases to 0.393 MeV when the ratio of the neutron number to the proton number is≥1.6.

关键词： Nuclear mass formula Neutron-rich nuclei Fermi-gas model

Mechanistic insight into the synergy between nickel single atoms and nanoparticles on N-doped carbon for electroreduction of CO2

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Journal of Energy Chemistry 2025年第1期100卷 327-336页

作者： Mingdong Sun Wenwen Guan Cailing chen Chao Wu xiaoling Liu Biao Meng Tao chen Yu Han Jun Wang Shibo xi Yu Zhou State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Advanced Membranes and Porous Materials Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology Institute of Sustainability for Chemicals Energy and Environment A*STAR (Agency for Science Technology and Research) College of Materials Science and Engineering Sichuan University

The synergy of single atoms （SAs） and nanoparticles （NPs） has demonstrated great potential in promoting the electrocatalytic carbon dioxide reduction reaction （CO2RR）;however,the rationalization of the SAs/NPs proportion remains one challenge for the catalyst ***,a Ni2+-loaded porous poly（ionic liquids）(PIL) precursor synthesized through the free radical self-polymerization of the ionic liquid monomer,1-allyl-3-vinylimidazolium chloride,was pyrolyzed to prepare the Ni,N co-doped carbon materials,in which the proportion of Ni SAs and NPs could be facilely modulated by controlling the annealing *** catalyst Ni-NC-1000 with a moderate proportion of Ni SAs and NPs exhibited high efficiency in the electrocatalytic conversion of CO2into *** Ni K-edge X-ray absorption near-edge structure （XANES） spectra and theoretical calculations were conducted to gain insight into the synergy of Ni SAs and *** charge transfer from Ni NPs to the surrounding carbon layer and then to the Ni SAs resulted in the electron-enriched Ni SAs active *** the electroreduction of CO2,the coexistence of Ni SAs and NPs strengthened the CO2activation and the affinity towards the key intermediate of*COOH,lowering the free energy for the potential-determining*CO2→*COOH step,and therefore promoted the catalysis efficiency.

关键词： Single atom catalyst Synergy effect Carbon catalyst Electrocatalysis

Tranylcypromine upregulates Sestrin 2 expression to ameliorate NLRP3-related noise-induced hearing loss

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Neural Regeneration Research 2025年第5期20卷 1483-1494页

作者： xihang chen Zhifeng chen Menghua Li Weiwei Guo Shuolong Yuan Liangwei Xu Chang Lin xi Shi Wei chen Shiming Yang Senior Department of Otolaryngology Head and Neck Surgery Chinese PLA General HospitalChinese PLA Medical SchoolBeijingChina State Key Laboratory of Hearing and Balance Science BeijingChina National Clinical Research Center for Otolaryngologic Diseases BeijingChina Key Laboratory of Hearing Science Ministry of EducationBeijingChina Beijing Key Laboratory of Hearing Impairment Prevention and Treatment BeijingChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Otolaryngology Head and Neck Surgery The 940th Hospital of Joint Logistics Support Force of Chinese PLALanzhouGansu ProvinceChina Key Laboratory of Tropical Biological Resources of Ministry of Education School of Pharmaceutical SciencesHainan UniversityHaikouHainan ProvinceChina Academician Workstation of Hainan University School of Pharmaceutical SciencesYazhou BaySanyaHainan ProvinceChina

Noise-induced hearing loss is the primary non-genetic factor contributing to auditory ***,there are currently no effective pharmacological interventions for patients with noise-induced hearing ***,we present evidence suggesting that the lysine-specific demethylase 1 inhibitor–tranylcypromine is an otoprotective agent that could be used to treat noise-induced hearing loss,and elucidate its underlying regulatory *** established a mouse model of permanent threshold shift hearing loss by exposing the mice to white broadband noise at a sound pressure level of 120 d B for 4 *** found that tranylcypromine treatment led to the upregulation of Sestrin2(SESN2)and activation of the autophagy markers light chain 3B and lysosome-associated membrane glycoprotein 1 in the cochleae of mice treated with *** noise exposure group treated with tranylcypromine showed significantly lower average auditory brainstem response hearing thresholds at click,4,8,and 16 k Hz frequencies compared with the noise exposure group treated with *** findings indicate that tranylcypromine treatment resulted in increased SESN2,light chain 3B,and lysosome-associated membrane glycoprotein 1 expression after noise exposure,leading to a reduction in levels of 4-hydroxynonenal and cleaved caspase-3,thereby reducing noise-induced hair cell ***,immunoblot analysis demonstrated that treatment with tranylcypromine upregulated SESN2 expression via the autophagy *** treatment also reduced the production of NOD-like receptor family pyrin domaincontaining 3(NLRP3)*** conclusion,our results showed that tranylcypromine treatment ameliorated cochlear inflammation by promoting the expression of SESN2,which induced autophagy,thereby restricting NLRP3-related inflammasome signaling,alleviating cochlear hair cell loss,and protecting hearing *** findings suggest that inhibiting lysine-specific demethylase 1 is a

关键词： 4-hydroxynonenal apoptosis autophagy cleaved caspase-3 inflammation NOD-like receptor family pyrin domain-containing 3(NLRP3) noise-induced hearing loss oxidative stress Sestrin2 tranylcypromine

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中国玉米期货市场价格发现功能的实证研究

科技和产业 2015年第6期15卷 58-63页

作者：艾晨曦马露楠西北农林科技大学经济管理学院陕西杨凌712100

选取2013年1月4日至2014年12月31日中国玉米期货市场价格和现货市场价格时间序列数据,采用格兰杰因果关系检验、误差修正模型和脉冲响应分析等研究了玉米期货市场在价格发现功能中的作用,结论认为:中国玉米期货市场的价格发现功能已经显... 详细信息

选取2013年1月4日至2014年12月31日中国玉米期货市场价格和现货市场价格时间序列数据,采用格兰杰因果关系检验、误差修正模型和脉冲响应分析等研究了玉米期货市场在价格发现功能中的作用,结论认为:中国玉米期货市场的价格发现功能已经显现,玉米期货价格能够较为有效的引导现货价格,但是玉米期货价格对现货价格的引导即价格发现功能的发挥存在一定的滞后性。

关键词：价格发现功能玉米期货市场玉米现货市场

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浅谈微波通信站的防雷措施

黑龙江气象 2010年第1期27卷 44-45页

作者：杨狄杨振忠艾喜臣鹤岗市气象局黑龙江鹤岗154100 牡丹江市气象局黑龙江牡丹江157000

由于微波站地里位置特殊和设备的重要性,通信站的防雷是一项系统工程,应强调全方位综合治理。论文按照泄放、消峰、隔离、屏蔽、均压等电位的联合接地设计原理,系统地介绍了通信站的防雷措施。

关键词：微波通信防雷感应雷直击雷

Analytical Expression of Ground State of Double-Well Bose-Einstein Condensates

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Communications in Theoretical Physics 2008年第2期49卷 377-378页

作者： chen ai-xi DENG Li Department of Applied Physics East China Jiaotong University Nanchang 330013 China

We derive an approximate analytical expression for the ground state of double-well BEC＇s, which reproduces highly accurately the numerical solution for the whole parameter regimes of the two-body repulsive interactio... 详细信息

关键词： double-well Bose-Einstein condensates ground state spectrum

Jnconventional Geometric Phase Gate with Superconducting Quantum Interference Device Qubits in Cavity QED

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Communications in Theoretical Physics 2008年第4期49卷 913-918页

作者： YANG Wen-xing chen ai-xi Department of Physics Southeast University Nanjing 210096 China State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Center for Cold Atom Physics Wuhan Institute of Physics and Mathematics the Chinese Academy of Sciences Wuhan 430071 China Department of Physics East China Jiaotong University Nanchang 330013 China

In the system with superconducting quantum interference devices （SQUID） in cavity, a scheme for constructing two-qubit quantum phase gate via a conventional geometric phase-shift is proposed by using a quantized cavity field and classical microwave pulses. In this scheme, the gate operation is realized in the subspace spanned by the two lower flux states of the SQUID system mud the population operator of the excited state has no effect on it. Thus the effect of decoherence caused from the levels of the SQUID system is possible to minimize. Under cavity decay, our strictly numerical simulation shows that it is also possible to realize the unconventional geometric phase gate. The experimental feasibility is discussed in detail.

关键词： superconducting quantum interference devices cavity QED geometric quantum gates