作者机构：
[Chengdeng Gou; Xiangming Hu; Jun Xu] College of Physical Science and Technology, Central China Normal University, Wuhan 430079, People's Republic of China;[Fei Wang] School of Science, Hubei University of Technology, Wuhan 430068, People's Republic of China
摘要：
We show that the hybrid magnon-photon bundle emission is possible to generate by employing a three-level Δ -type superconducting artificial atom. The single atom is dispersively coupled with two microwave cavities, one of which simultaneously couples to a yttrium iron garnet (YIG) sphere via the magnetic dipole interaction. Based on the virtual photon exchange, the indirect magnon-atom interaction is established with flexibly tunable coupling strength, thus leading to the consecutive emission of hybrid magnon-photon pairs. The super-Rabi oscillation and Purcell effect make such a hybrid bundle possible in the present three-level system, which is difficult to achieve in the two-level system. The present scheme may find potential applications in quantum information processing and quantum sensing technology.
摘要：
Spike-timing-dependent plasticity (STDP) is one of the important rules for the change of synaptic weights between neurons in biological nervous systems. In this paper, we study the effect of STDP on the synchronization phenomenon induced by time delay in the neuronal network which is the scale-free network with small-world property, and nodes of the network are constructed by Izhikevich neuron and connected by chemical synapses. For appropriate time delay values, there exists an optimal range of STDP maximum weight value in which the synchronization of the network is better, and in addition the synchronization is decreased with the increasing of STDP maximum weight value. The network with high synchronization has a centralized distribution of synaptic weights within it, while conversely, an unsynchronized network has a more discrete distribution of synaptic weights. When the STDP maximum weight value is too small, the collective firing pattern of network is not affected by synaptic current, and the synchronization of the network is also not affected. Interestingly, comparing with the small-world network and the scale-free network, it is found that a network has a smaller range of optimal STDP maximum weight values when the network is of larger average clustering coefficient, shorter average shortest path length, and higher small-world property. Our results can illuminate the potential significance of STDP for information processing and transmission in the nervous system.
摘要：
In recent years, the coexistence of different states in the neural system has attracted widespread interest. Researchers have found a coexisting state of spiking and resting in homogeneous networks, which is known as the chimera-like state. The real cortical network is a much more complex and heterogeneous network. Therefore, the excitatory-inhibitory cortical neuronal network is constructed based on Hodgkin-Huxley neuronal model in this paper, and the chimera-like state is further investigated in the heterogeneous network. It is found that the chimera-like state is related to the balance between excitatory and inhibitory synaptic currents. The excitatory coupling current can counteract the initial condition effect and promote synchronized firing of neurons in the network. The inhibitory coupling current desynchronizes the network and thus induces synaptic noise, resulting in an inverse bell-shaped dependence of the change in the number of spiking neurons. We analyzed the underlying mechanisms of synaptic noise in the phase plane diagram and found it has asymmetry for the neuronal state transition. In addition, neurons with low degrees have a higher probability of undergoing state transitions. Finally, we verified that the chimera-like state is robust to network topology and initial conditions. The results provide a new insight into neuronal interactions in heterogeneous networks and might help to reveal the mechanisms of coexistence of different states in the cortical network.
期刊：
Journal of Instrumentation,2024年19(03):C03031 ISSN：1748-0221
通讯作者：
Gao, C.;Zhang, D
作者机构：
[Yang, Y.] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.;[Yang, Y.] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China.;[Gao, C.; Liu, L.; Zhang, D; Gao, C; Wang, H.; Qiao, Y.; Zhang, D.; Huang, G.; Liang, T.; Chen, K.; Hu, Z.; Sun, X.; Liu, J.] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, PLAC, Wuhan 430079, Peoples R China.;[Tian, X.] Hubei Univ Sci & Technol, Sch Resources Environm Sci & Engn, Xianning 437100, Peoples R China.;[Song, Z.] Naval Univ Engn, Coll Elect Engn, Wuhan 430033, Peoples R China.
通讯机构：
[Zhang, D ; Gao, C] C;Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, PLAC, Wuhan 430079, Peoples R China.
关键词：
Analogue electronic circuits;CMOS readout of gaseous detectors;Front-end electronics for detector readout
摘要：
This paper presents the design and electrical test results of a low-noise front-end chip (named Topmetal-S) in a High-pressure Time Projection Chamber (TPC) for searching the neutrinoless double beta decay. The Topmetal-S has been fabricated in a 130 nm CMOS technology. The proposed front-end chip consists of a charge collection electrode, a Charge Sensitive Amplifier (CSA) and peripheral circuits. The test results indicate that the CSA features an input linear dynamic range of approximately 6.64 fC, a charge-conversion gain of about 220 mV/fC and an Equivalent Noise Charge (ENC) of approximately 115e(-) after a digital trapezoidal pulse shaper.
作者：
R. Aaij;A. S. W. Abdelmotteleb;C. Abellan Beteta;F. Abudinén;T. Ackernley;...
期刊：
Journal of High Energy Physics,2024年2024(4):1-52 ISSN：1029-8479
通讯作者：
P. Robbe
作者机构：
[R. Aaij; K. Akiba; A. Biolchini; J. de Boer; S. Ferreres Sole; E. Gabriel; M. D. Galati; R. E. Geertsema; L. M. Greeven; K. Heijhoff; W. Hulsbergen; E. Jans; T. Ketel; P. Koppenburg; I. Kostiuk; D. Magdalinski; A. Pellegrino; C. Sanchez Gras; A. Snoch; N. Tuning; M. van Veghel] Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands;[A. S. W. Abdelmotteleb; F. Abudinén; J. J. Back; A. Beck; T. Blake; M. F. Cicala; A. Davidson; T. Gershon; L. Grazette; R. J. Hunter; T. P. Jones; M. Kreps; T. Latham; M. Lehuraux; E. Muhammad; B. Pagare; L. Paolucci; M. Ramos Pernas; F. Swystun; M. Vesterinen; A. R. Wiederhold; M. Xu] Department of Physics, University of Warwick, Coventry, United Kingdom;[C. Abellan Beteta; M. Andersson; P. Andreola; V. Bellee; R. Bernet; C. Betancourt; Ia. Bezshyiko; A. Buonaura; D. C. Craik; D. De Simone; V. Denysenko; J. Eschle; S. Esen; M. Ferrillo; D. Lancierini; A. Mathad; K. Müller; P. Owen; O. Steinkamp; A. Terentev] Physik-Institut, Universität Zürich, Zürich, Switzerland;[T. Ackernley; T. J. V. Bowcock; J. Brown; G. Casse; A. J. Chadwick; C. A. Chavez Barajas; T. Halewood-leagas; J. Hammerich; T. Harrison; K. Hennessy; N. Howarth; D. Hutchcroft; P. J. Marshall; P. Naik; K. Rinnert; S. Scherl; T. Shears; E. Vilella Figueras] Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom;[B. Adeva; P. Baladron Rodriguez; S. Belin; A. Brea Rodriguez; A. Brossa Gonzalo; J. Cambon Bouzas; L. Carcedo Salgado; X. Cid Vidal; I. Corredoira; J. Dalseno; C. Eirea Orro; M. Fernandez Gomez; A. Gallas Torreira; B. Garcia Plana; C. Landesa Gomez; J. Lomba Castro; S. López Soliño; D. Martinez Santos; A. Morcillo Gomez; J. Novoa Fernandez; A. Pereiro Castro; M. Plo Casasus; C. Prouve; E. Rodriguez Fernandez; E. Rodriguez Rodriguez; M. Romero Lamas; A. Romero Vidal; R. A. Ruiz Fernandez; J. J. Saborido Silva; C. Santamarina Rios; S. Sellam; P. Vazquez Regueiro; C. Vázquez Sierra] Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
通讯机构：
[P. Robbe] U;Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
关键词：
QCD;Heavy Quark Production;Particle and Resonance Production;Hadron-Hadron Scattering
摘要：
The production of ψ(2S) mesons in proton-lead collisions at a centre-of-mass energy per nucleon pair of
$$ \sqrt{s_{\textrm{NN}}} $$
= 8.16 TeV is studied with the LHCb detector using data corresponding to an integrated luminosity of 34 nb−1. The prompt and nonprompt ψ(2S) production cross-sections and the ratio of the ψ(2S) to J/ψ cross-section are measured as a function of the meson transverse momentum and rapidity in the nucleon-nucleon centre-of-mass frame, together with forward-to-backward ratios and nuclear modification factors. The production of prompt ψ(2S) is observed to be more suppressed compared to pp collisions than the prompt J/ψ production, while the nonprompt productions have similar suppression factors.
作者机构：
[Yang, Zhong; Wang, Xin-Nian] Cent China Normal Univ, Key Lab Quark & Lepton Phys, MOE, Wuhan 430079, Peoples R China.;[Yang, Zhong; Wang, Xin-Nian] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;[He, Yayun] South China Normal Univ, Inst Quantum Matter, Guangdong Prov Key Lab Nucl Sci, Guangzhou 510006, Peoples R China.;[He, Yayun] South China Normal Univ, Southern Nucl Sci Comp Ctr, Guangdong Hong Kong Joint Lab Quantum Matter, Guangzhou 510006, Guangdong, Peoples R China.;[Moult, Ian] Yale Univ, Dept Phys, New Haven, CT 06511 USA.
通讯机构：
[Yang, Z ] C;Cent China Normal Univ, Key Lab Quark & Lepton Phys, MOE, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
摘要：
Energy -energy correlators (EECs) are promising observables to study the dynamics of jet evolution in the quark -gluon plasma (QGP) through its imprint on angular scales in the energy flux of final -state particles. We carry out the first complete calculation of EECs using realistic simulations of high-energy heavy -ion collisions and dissect the different dynamics underlying the final distribution through analyses of jet propagation in a uniform medium. The EECs of gamma -jets in heavy -ion collisions are found to be enhanced by the medium response from elastic scatterings instead of induced gluon radiation at large angles. In the meantime, EECs are suppressed at small angles due to energy loss and transverse momentum broadening of jet shower partons. These modifications are further shown to be sensitive to the angular scale of the in -medium interaction, as characterized by the Debye screening mass. Experimental verification and measurement of such modifications will shed light on this scale and the short -distance structure of the QGP in heavy -ion collisions.
期刊：
Sustainable Materials and Technologies,2024年40:e00875 ISSN：2214-9937
通讯作者：
Wei Sun<&wdkj&>Zhihong Zhu
作者机构：
[Songlin Zhao; Chengcai Wang; Luhang Cai; Yipeng Chen; Zhihong Zhu] Institute of Nano-science and Nano-technology, College of Physical Science and Technology, Central China Normal University, Wuhan 430079, PR China;[Wei Sun] Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, PR China
通讯机构：
[Wei Sun] K;[Zhihong Zhu] I;Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, PR China<&wdkj&>Institute of Nano-science and Nano-technology, College of Physical Science and Technology, Central China Normal University, Wuhan 430079, PR China
摘要：
The fabrication of distinct sites on the carbonized substrate as bifunctional oxygen catalysts is pivotal for enhancing the practicality of Zn-air batteries, but remains a formidable challenge. Herein, a gas doping strategy is reported for anchoring Ni nanoparticles and further increasing FeNx sites on biomass-derived Fe, N, and P co-doped porous carbonized materials as highly efficient bifunctional electrocatalysts. The inherent porous structure and heteroatom of rattan tea provide a superior carrier for Fe and Ni-based active species. Notably, the as-prepared Ni@FeNPC/Fef shows unprecedented capability for oxygen reduction reaction and excellent catalytic activity for oxygen evolution reaction. In situ Raman spectroscopy studies shed light on the role of FeNx and heteroatom-doped carbon during the oxygen reduction reaction. Density functional theory calculations verify the catalytic mechanism on various active sites of Ni@FeNPC/Fef. Moreover, the Ni@FeNPC/Fef-based Zn-air battery maintains cyclic stability for over 400 h with negligible voltage degradation. This strategy endows a novel route for converting biomass into practical electrocatalysts for diverse energy-related systems.
摘要：
PURPOSE: Lack of adequate physical exercise is the main reason for the frequent occurrence of health problems among Chinese college students. The purpose of this study is to explore the effects of control beliefs on cardiovascular fitness among college students and the mediating role of subjective exercise experience and exercise adherence in it. METHODS: The Control Belief Scale, the Subjective Exercise Experience Scale (SEES), and the Exercise Adherence Scale were used to investigate 1854 freshmen and sophomores in Nantong and Suzhou, China. Cardiovascular fitness data for college students from the National Student Physical Health Standard and SPSS 23.0 statistical analysis software were used to carry out statistics and analyses on the questionnaires. Correlation analysis, regression analysis, and mediation models were used to assess control beliefs, subjective exercise experiences, exercise adherence, and cardiovascular fitness. RESULTS: The control belief of college students was directly related to cardiovascular fitness (effect value: 0.121), the mediating effect through subjective exercise experience was not significant, indirectly related through the mediating effect of exercise adherence (effect value: 0.101), and indirectly related through the mediating effect of subjective exercise experience and exercise adherence (effect value: 0. 019). The positive prediction effect of control belief on cardiovascular fitness of college students was significant (β = 0.267, P < 0.001), and the positive prediction effect of control belief on cardiovascular fitness of college students was still significant (β = 0.121, P < 0.01) after adding the intermediary variables (subjective exercise experience and exercise adherence). CONCLUSIONS: The cardiovascular fitness of college students was not only directly affected by control beliefs but also affected by the chain mediating effect of subjective exercise experience and exercise adherence. Therefore, it is necessary to improve the control beliefs, subjective exercise experiences, and exercise adherence of college students to improve their cardiovascular fitness level and enhance their physical health.
摘要：
The security performance of image encryption schemes based on chaotic systems has been greatly improved. Specifically, those chaotic systems with high-dimension or special attractors have shown more benefits for enhancing performance. By introducing the tangent function, a 4-dimensional chaotic system with infinite coexisting attractors is constructed. And the dynamical behaviors are analyzed through phase diagrams, bifurcation diagrams, Lyapunov exponent spectrum and spectral entropy complexity diagram. The results demonstrate that the system exhibits self-replication with respect to the initial value y0 and possesses rich dynamical properties, such as infinite coexisting attractors, sensitivity to initial values and period-doubling bifurcation. These characteristics make it suitable for chaotic cryptography applications. Subsequently, a lossless double color image encryption scheme is designed based on the constructed system. The scheme adopts a diffusion-scrambling-diffusion processing method, and cleverly utilizes the information of the original plaintext image in the scrambling process, which significantly enhances the ability to resist known plaintext attacks or selected plaintext attacks. The experimental results verify that the designed algorithm not only effectively encrypts color and grayscale images, but also allows for encryption images of any size. Moreover, the algorithm implementation process is efficient and ensures high security performance, effectively resisting differential attacks, rotation attacks and cropping attacks. This research exploration on the chaotic characteristics of the nonlinear high-dimensional system and its application in image encryption is expected to provide theoretical guidance in the field of secure communication.
作者机构：
[Jiang, Zefang; Yuan, Xuefei; Ye, Shasha; Jiang, ZF] Hubei Engn Univ, Dept Phys & Elect Informat Engn, Xiaogan 432000, Peoples R China.;[Jiang, Zefang; Jiang, ZF] Cent China Normal Univ, Inst Particle Phys, Key Lab Quark & Lepton Phys, MOE, Wuhan 430079, Peoples R China.
通讯机构：
[Jiang, ZF ] H;Hubei Engn Univ, Dept Phys & Elect Informat Engn, Xiaogan 432000, Peoples R China.;Cent China Normal Univ, Inst Particle Phys, Key Lab Quark & Lepton Phys, MOE, Wuhan 430079, Peoples R China.
关键词：
global polarization splitting;Lambda/Lambda hyperons;hydrodynamic model CLVisc;finite net baryon density
摘要：
We present a systematic study of the global polarization of Lambda and Lambda hyperons in Au+Au collisions at root s(NN)=19.6 GeV using the viscous hydrodynamic model CCNU-LBNL-Viscous hydrodynamic model (CLVisc) with a modified 3D optical Glauber model initial condition. The global polarization splitting as a function of transverse momentum and rapidity is investigated. It is shown that the magnitude of the net baryon density and its longitudinal titled geometry at the initial stage both have significant effects on the global polarization splitting of Lambda and Lambda over bar hyperons. Specifically, an increase in the magnitude of the net baryon density leads to a corresponding minor increase in the global polarization splitting. Similarly, alterations in the tilted geometry of net baryon density results in significant changes in the splitting of the global polarization.
作者机构：
[Qiang Wang; Jia-Hao Shi; Zhi-Ying Qin; Wen-Chao Zhang] School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China;[An-Ke Lei] Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079, China;[Zhi-Lei She] School of Mathematical and Physical Sciences, Wuhan Textile University, Wuhan 430200, China;[Yu-Liang Yan; Ben-Hao Sa] China Institute of Atomic Energy, P. O. Box 275 (10), Beijing 102413, China;[Kai-Fan Ye] School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China<&wdkj&>Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079, China
摘要：
In this work we investigate the J/ψ production in proton-proton collisions at the center-of-mass energy (s) equal to 2.76, 5.02, 7, 8, and 13 TeV with the parton and hadron cascade model PACIAE 2.2a. It is based on PYTHIA but extended considering the partonic and hadronic rescatterings before and after hadronization, respectively. In the PYTHIA sector the J/ψ production quantum chromodynamics processes are selected specially and a bias factor is proposed correspondingly. The calculated total cross sections, the transverse momentum differential, and the rapidity differential cross sections of J/ψ in the forward rapidity region reproduce the corresponding experimental measurements reasonably well. In the mid-rapidity region, the double-differential cross sections at s=5.02 , 7, and 13 TeV are also in a good agreement with the experimental data. Moreover, we interpolate the double-differential cross section as well as the total cross section of J/ψ in the mid-rapidity region at s=8 TeV, which could be validated if the experimental data are available.
作者：
Peng, Yunhui;Song, Wei;Teif, Vladimir B.;Ovcharenko, Ivan;Landsman, David;...
期刊：
ELIFE,2024年12 ISSN：2050-084X
通讯作者：
Peng, YH;Panchenko, AR
作者机构：
[Peng, Yunhui; Peng, YH] Cent China Normal Univ, Inst Biophys, Wuhan, Peoples R China.;[Peng, Yunhui; Peng, YH] Cent China Normal Univ, Dept Phys, Wuhan, Peoples R China.;[Ovcharenko, Ivan; Landsman, David; Peng, Yunhui; Peng, YH; Song, Wei] NIH, Natl Lib Med, Bethesda, MD 20892 USA.;[Teif, Vladimir B.] Univ Essex, Sch Life Sci, Wivenhoe Pk, Colchester, England.;[Panchenko, Anna R.; Panchenko, AR] Queens Univ, Dept Pathol & Mol Med, Kingston, ON, Canada.
通讯机构：
[Peng, YH ] C;[Panchenko, AR ] Q;Cent China Normal Univ, Inst Biophys, Wuhan, Peoples R China.;Cent China Normal Univ, Dept Phys, Wuhan, Peoples R China.;NIH, Natl Lib Med, Bethesda, MD 20892 USA.
摘要：
Wrapping of DNA into nucleosomes restricts accessibility to DNA and may affect the recognition of binding motifs by transcription factors. A certain class of transcription factors, the pioneer transcription factors, can specifically recognize their DNA binding sites on nucleosomes, initiate local chromatin opening, and facilitate the binding of co-factors in a cell-type-specific manner. For the majority of human pioneer transcription factors, the locations of their binding sites, mechanisms of binding, and regulation remain unknown. We have developed a computational method to predict the cell-type-specific ability of transcription factors to bind nucleosomes by integrating ChIP-seq, MNase-seq, and DNase-seq data with details of nucleosome structure. We have demonstrated the ability of our approach in discriminating pioneer from canonical transcription factors and predicted new potential pioneer transcription factors in H1, K562, HepG2, and HeLa-S3 cell lines. Last, we systematically analyzed the interaction modes between various pioneer transcription factors and detected several clusters of distinctive binding sites on nucleosomal DNA.
期刊：
Journal of Grid Computing,2024年22(1):1-17 ISSN：1570-7873
通讯作者：
Ma, QM
作者机构：
[Song, Xiedong] JiNing Univ, Sch Math & Comp Applicat Technol, Jining 273155, Peoples R China.;[Ma, Qinmin; Ma, QM] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Ma, Qinmin; Ma, QM] Shenzhen Polytech Univ, Sch Artificial Intelligence, Shenzhen 518055, Peoples R China.
通讯机构：
[Ma, QM ] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;Shenzhen Polytech Univ, Sch Artificial Intelligence, Shenzhen 518055, Peoples R China.
关键词：
Edge computing;Deep Learning;Internet of Things;DDoS;Federated Convolution Neural Network
摘要：
Edge nodes, which are expected to grow into a multi-billion-dollar market, are essential for detection against a variety of cyber threats on Internet-of-Things endpoints. Adopting the current network intrusion detection system with deep learning models (DLM) based on FedACNN is constrained by the resource limitations of this network equipment layer. We solve this issue by creating a unique, lightweight, quick, and accurate edge detection model to identify DLM-based distributed denial service attacks on edge nodes. Our approach can generate real results at a relevant pace even with limited resources, such as low power, memory, and processing capabilities. The Federated Convolution Neural Network (FedACNN) deep learning method uses attention mechanisms to minimise communication delay. The developed model uses a recent cybersecurity dataset deployed on an edge node simulated by a Raspberry Pi (UNSW 2015). Our findings show that, compared to traditional DLM methodologies, our model retains a high accuracy rate of about 99%, even with decreased CPU and memory resource use. Also, it is about three times smaller in volume than the most advanced model while requiring a lot less testing time.
作者机构：
[Xiao, Yuxuan; Xie, Guohua] The Institute of Flexible Electronics (Future Technologies), Xiamen University, Xiamen 361005, China;[Xue, Qin] Department of Physical Science and Technology, Central China Normal University, Wuhan 430079, China;[Liu, Xiaoke; Gao, Feng] Department of Physics, Chemistry and Biology, Linköping University, 58183 Linköping, Sweden
通讯机构：
[Xiaoke Liu; Feng Gao] D;Department of Physics, Chemistry and Biology, Linköping University, 58183 Linköping, Sweden
作者机构：
[Zeng, Chunhua; Zeng, CH; Sun, Peng; Zhao, Yuxiang] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China.;[Zeng, Chunhua; Zeng, CH] Lanzhou Univ, Lanzhou 730000, Gansu, Peoples R China.;[Zeng, Chunhua; Zeng, CH; Sun, Peng; Zhao, Yuxiang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.;[Dong, Hongxin] Nanjing Normal Univ, Dept Phys, Nanjing 210023, Jiangsu, Peoples R China.;[Dong, Hongxin] Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210023, Jiangsu, Peoples R China.
通讯机构：
[Zeng, CH ] C;Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China.;Lanzhou Univ, Lanzhou 730000, Gansu, Peoples R China.;Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
摘要：
We present a phenomenological extraction of transversity distribution functions and Collins fragmentation functions by simultaneously fitting to semi -inclusive deep inelastic scattering and electron -positron annihilation data. The analysis is performed within the transverse -momentum -dependent factorization formalism, and sea quark transversity distributions are taken into account for the first time. We find the u over bar quark favors a negative transversity distribution, while that of the d over bar quark is consistent with zero according to the current accuracy. In addition, based on a combined analysis of world data and simulated data, we quantitatively demonstrate the impact of the proposed Electron -Ion Collider in China on precise determinations of the transversity distributions, especially for sea quarks, and the Collins fragmentation functions.
期刊：
Chemical Engineering Journal,2024年485:149890 ISSN：1385-8947
通讯作者：
Zhaowu Wang<&wdkj&>Feng Ren
作者机构：
[Derun Li; Guo Wei; Tao Jiang; Shixin Wu; Liqiu Huang; Yichao Liu; Hengyi Wu; Changzhong Jiang; Feng Ren] School of Physics and Technology, Center for Ion Beam Application, Hubei Key Laboratory of Nuclear Solid Physics, Wuhan University, Wuhan 430072, China;[Zhuo Xing] College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China;[Zhaowu Wang] School of Science, Hebei University of Technology, Tianjin 300401, China
通讯机构：
[Zhaowu Wang; Feng Ren] S;School of Physics and Technology, Center for Ion Beam Application, Hubei Key Laboratory of Nuclear Solid Physics, Wuhan University, Wuhan 430072, China<&wdkj&>School of Science, Hebei University of Technology, Tianjin 300401, China
摘要：
NiO has attracted wide attention in the past decade as a cost-effective electrochemical catalyst for OER. However, its relatively poor performance and conductivity limit its commercial applications. Here, we highlight a unique ion irradiation method to enhance the catalytic activity of NiO. Benefiting from sulfate anchoring and the introduction of oxygen vacancies by He+ ion irradiation, the optimal catalyst (ir-S-NiO) exhibits an outstanding OER performance with a low overpotential of 269 mV at 10 mA cm−2. Moreover, the fabricated Anion exchange membrane water electrolyzer (AEMWE) constructed by the ir-S-NiO is demonstrated to need a cell voltage of 1.72 V to reach a current density of 0.1 A cm−2 and shows remarkably long-term stability for 200 h without obvious attenuation at the current density of 0.5 A cm−2. This work provides a new method for the development of high-performance and stable OER electrocatalysts.
摘要：
This paper proposes a new hybrid structure and microwave modeling method that combines polynomial regression with batch-normalized deep feedforward neural network (BN-DFN) to be used in high-dimensional microwave circuit modeling. Utilizing the proposed BN-DFN method results in a remarkably faster training procedure compared to the conventional DFN. In addition, the superiority of the BN-DFN method over DFN in terms of accuracy prepares this opportunity to perform high-dimensional microwave modeling using fewer training data in comparison with the modeling with conventional DFN. The results show that a data reduction of about 40-80% can be achieved for microwave applications used in this paper using the proposed method. Also, in this paper, a hybrid polynomial regression BN-DFN (HPBN-DFN) is proposed to further improve the accuracy of the proposed BN-DFN method. The proposed HPBN-DFN method fine-tunes the predicted values of the BN-DFN by passing them through a polynomial regression stage for increasing accuracy. The proposed methods are verified through two high-dimensional parameter-extraction modeling examples of microwave filters.
通讯机构：
[Sun, XM ; Xiao, L] C;Cent China Normal Univ, Dept Phys, Wuhan 430079, Hubei, Peoples R China.
关键词：
Front-end electronics for detector readout;Particle tracking detectors;VLSI circuits
摘要：
We present the design of a prototype MAPS sensor MIC6_V1 based on a 55 nm Quad -well CMOS Image Sensor process for the CEPC vertex detector. A new node -based, data -driven, parallel readout architecture is implemented to achieve high spatial resolution, fast readout, and low power consumption. The size of MIC6_V1 is 2.8 mm x 2.8 mm, which contains a pixel matrix of 64 rows by 64 columns, and the pixel size is 23.6 mu m x 20 mu m. The integration time is 5 mu s, and the hit arrival time measurement accuracy is 10 ns.
关键词：
Hot spot model;Exclusive vector meson production;Color Glass Condensate
摘要：
We show within proton hot spot picture that the exclusive vector meson production in electron-proton deeply inelastic scattering is sensitive to the individual width of the constituent quarks of the proton. For comparison, we calculate the exclusive J/Psi production cross-sections in three cases, B-u >= B-d, B-u < B-d and B-u not equal B-u(' )not equal B-d, where the B-u, B-u(') and Bd denote the widths of two up quarks and a down quark. We find that only results calculated with B-u >= B-d can give a reasonable description of the exclusive J/Psi production cross-section data at HERA. To test that our results are independent of the details of the model, we retain the average width of the three constituent quarks unchanged and compute the exclusive J/Psi production cross-sections with contribution weight by setting different proportional coefficients (W-u and W-d) for the up and down quarks, respectively. It shows that the results calculated with W-u >= W-d can well reproduce the exclusive J/Psi production data at HERA, while the opposite case cannot describe the HERA data. These interesting findings seem to indicate that the up quark has more gluons around it than the down quark at high energy although the spatial distribution of gluons fluctuates event-by-event. To ensure the relevant results independent of the species of the vector meson, we also calculate the rho production cross-sections with the same group of parameters used in the exclusive J/Psi production and compare the predictions with the HERA data. It shows that all the results computed in the exclusive rho productions are consistent with the findings obtained in the exclusive J/Psi productions.
作者机构：
[Cao, Shanshan; Xing, Wen-Jing] Shandong Univ, Inst Frontier & Interdisciplinary Sci, Qingdao 266237, Shandong, Peoples R China.;[Qin, Guang-You; Xing, Wen-Jing] Cent China Normal Univ, Inst Particle Phys, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.
通讯机构：
[Qin, GY ] C;[Cao, SS ] S;Shandong Univ, Inst Frontier & Interdisciplinary Sci, Qingdao 266237, Shandong, Peoples R China.;Cent China Normal Univ, Inst Particle Phys, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.
摘要：
The quenching of light and heavy flavor hadrons in relativistic heavy-ion collisions probes the color and flavor dependences of parton energy loss through a color-deconfined quark-gluon plasma (QGP), and thus reveals the properties of QCD matter at extremely high density and temperature. By combining a next-to-leading order perturbative QCD calculation of parton production, a general ansatz of parton energy loss functions and parton fragmentation functions, we calculate the nuclear modification of various hadron species -- charged hadrons, D mesons and B-decayed J/psi -- over a wide transverse momentum regime. Comparing our calculations to the experimental data using the Bayesian statistical analysis, we perform a first simultaneous extraction of the energy loss functions of gluons (g), light quarks (q), charm quarks (c) and bottom quarks (b) inside the QGP. We find that the average parton energy loss at high energies follows the expected hierarchy of <Delta E-g >><Delta E-q >similar to <Delta E-c >><Delta Eb >, while the parton energy loss distribution can further test the QCD calculations of parton interaction with the dense nuclear matter. We also find that the reduction of experimental uncertainties can significantly improve the precision of the extracted parton energy loss functions inside the QGP.
