作者机构：
[Cheng, Houyuan; Dai, Yilin; Yang, Helin; Jin, Jing; Fu, Yang; Zhou, Xiaofeng] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Ding, Fan] China Ship Dev & Design Ctr, Wuhan 430064, Peoples R China.
通讯机构：
[Yang, HL ] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
关键词：
3-D structure;Frequency selective rasorber;Polarization insensitive;Switchable transmission band
摘要：
A novel polarization insensitive ultrawideband frequency selective rasorber (FSR) based on a 3-D cubic structure is proposed, and the fundamental operating principles of the three parts are demonstrated by equivalent circuit models. The first one is a 3-D FSR based on the multiple resonant absorptions of the curved longer dipole and shorter dipole excitation in the resonance chamber and the insertion of the interdigital resonator (IR) structure in the shorter dipole to form a transmission window. The passband with an insertion loss of less than 3 dB is 10.3-12.9 GHz (22.4%), and the frequency bandwidth with a reflection coefficient of less than -10 dB ranges from 4.2 to 20.5 GHz (132%). The second is a reconfigurable frequency selective surface (FSS) with two operating states, and the third is a 3-D FSR with a switchable passband feature that incorporates the above two structures of loaded switching diodes.
作者机构：
[Liu, Feng-Lei; Liu, FL; Qin, Guang-You; Wu, Xiang-Yu; Wang, Xin-Nian] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.;[Liu, Feng-Lei; Liu, FL; Qin, Guang-You; Wu, Xiang-Yu; Wang, Xin-Nian] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Hubei, Peoples R China.;[Cao, Shanshan] Shandong Univ, Inst Frontier & Interdisciplinary Sci, Qingdao 266237, Shandong, Peoples R China.;[Wang, Xin-Nian] Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA.
通讯机构：
[Liu, FL ] C;Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.;Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Hubei, Peoples R China.
摘要：
In a quasi-particle model of QCD matter at finite temperature with thermal masses for quarks and gluons from hard thermal loops, the equation of state (EOS) can be described by an effective temperature dependence of the strong coupling g(T). Assuming the same effective coupling between the exchanged gluon and thermal partons, the EOS can also be related to parton energy loss. Based on the quasi-particle linear Boltzman n transport (QLBT) model coupled to a (3+1)-dimensional viscous hydrodynamic model of the quark-gluon plasma (QGP) evolution and a hybrid fragmentation-coalescence model for heav y quark hadronization, we perform a Bayesian analysis of the experimental data on D meson suppression R-AA and anisotropy v(2) at RHIC and the LHC. We achieve a simultaneous constraint on the QGP EOS and the heav y quark transport coefficient, both consistent with the lattice QCD results.
通讯机构：
[Huang, GM ] C;Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
关键词：
scalar magnetometer;subsea power cables;attitude-independent detection;route tracking;high sea condition
摘要：
To overcome the shortcoming wherein the accuracy of subsea cable detection can be affected by the determination of the bias vector, scale factors, and non-orthogonality corrections of the vector magnetometer, a real-time attitude-independent route tracking method for subsea power cables is investigated theoretically and experimentally by means of scalar magnetic field checking. The measurement of the magnetic field B-c produced by the current in a cable is made immune to the influence of the platform attitude by extracting the component of B-c along the geomagnetic field using a high-bandwidth self-oscillating optically pumped magnetometer. The self-oscillating frequency is proved to be independent of the attitude of the magnetometer with the theoretical model. Experiments are carried out to test the attitude-independent performance, and the effectiveness of route tracking is verified by the results of the sea experiment. The proposed method will effectively improve the ability to locate subsea cables under high sea conditions.
作者机构：
[Zha, S; Zha, Shuai] Hubei Univ Chinese Med, Sch Lab Med, 16 Huangjia Lake West Rd, Wuhan 430065, Peoples R China.;[Zha, S; Zha, Shuai] Hubei Shizhen Lab, Wuhan 430061, Peoples R China.;[Jian, Yuehan; Pan, Siyu; Jiang, Lijun] Cent China Normal Univ, Sch Life Sci, Hubei Key Lab Genet Regulat & Integrat Biol, Wuhan 430079, Peoples R China.;[Peng, Yunhui] Cent China Normal Univ, Inst Biophys, Dept Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Zha, S ] H;[Jiang, LJ ] C;Hubei Univ Chinese Med, Sch Lab Med, 16 Huangjia Lake West Rd, Wuhan 430065, Peoples R China.;Hubei Shizhen Lab, Wuhan 430061, Peoples R China.;Cent China Normal Univ, Sch Life Sci, Hubei Key Lab Genet Regulat & Integrat Biol, Wuhan 430079, Peoples R China.
关键词：
Lanthanide nanosensor;Upconversion emission;NIR-II fluorescence;H 2 S detection;Endogenous H 2 S activated nanosensor
摘要：
Hydrogen sulfide (H2S), a third gas signaling molecule, is considered to play a vital role in the development and treatment of diseases. To elucidate the intricate role of H2S in the organism and its participation in disease processes, there is an urgent need to visualize the dynamics of H2S. However, most currently available molecular probes have limitations in terms of sensitivity, specificity, and precision. In this study, the safe and biocompatible upconversion nanosensor NaYF4:Yb3+, Tm3+@NaYF4 anchored with Ag2O was successfully fabricated for H2S detection with an ultralow detection limit at 0.93 ng/mL. NaYF4:Yb3+, Tm3+@NaYF4@Ag2S is formed through in situ sulfuration reaction, and second near-infrared (NIR-II) fluorescence can be recorded upon the presence of H2S under 808 nm excitation. The results demonstrate the exceptional detection linearity and high specificity for H2S quantification. Additionally, NaYF4:Yb3+, Tm3+@NaYF4@Ag2O possesses a safe nature in normal and cancer cells. This nanosensor presents a NIR fluorescence imaging strategy for highly sensitive and specific detection of H2S, which has promises to be a practical tool for biomedical applications.
作者机构：
State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China;College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China;University of Chinese Academy of Sciences, Beijing 100049, China;kanghp@wipm.ac.cn;xjliu@wipm.ac.cn
关键词：
High harmonic generation;Inelastic scattering;Ionization;Laser light;Photoelectron spectroscopy;Systems design
摘要：
We report on a theoretical study of nonsequential double ionization (NSDI) of magnesium atoms by using combined linearly and circularly polarized fields. By employing a concise model including the dynamic ionic dipole potential, we show that the polarization effects can be controlled by tuning the subcycle waveform of the electric field of the two-color pulses. We demonstrate that the influence of the dipole potential on NSDI depends on the symmetry of two-color laser fields by tracing back the electron trajectories. Furthermore, we propose a method allowing for manipulating the returning trajectories with the initial direction of the tunneled electrons almost unchanged.
期刊：
Microwave and Optical Technology Letters,2024年66(2):e34083- ISSN：0895-2477
通讯作者：
Yang, HL
作者机构：
[Yang, Helin; Fu, Yang; Yang, Haohui] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430000, Peoples R China.;[Ding, Fan] China Ship Dev & Design Ctr, Wuhan, Peoples R China.;[Chen, Shiju] Sci & Technol Complex Syst Control & Intelligent A, Beijing, Peoples R China.
通讯机构：
[Yang, HL ] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430000, Peoples R China.
关键词：
chaff cloud;dipole cluster;electromagnetic scattering;radar cross section (RCS);the linear method of moment (LMM)
摘要：
This paper equates chaff clouds to dipole clusters and studies the electromagnetic scattering problem of dipole clusters based on the linear method of moment (LMM) that solve the electric field Integral equation with the pulse basis function. Firstly, the radar cross section (RCS) of three dipole elements is calculated. The dipole element is divided into 11 segment line units using pulse basis functions. The actual chaff clouds are modeled as two nearest dipole cluster models, which are cubic dipole cluster with uniform distribution formed and spherical dipole cluster with Gaussian distribution formed. The total RCS and total E-Field magnitude of two dipole cluster models were calculated. Finally, two physical models are constructed based on the simulation models and an experiment is designed. The electromagnetic scattering characteristics of the two models are measured, which verifies the accuracy of the simulation results and the operability of the experiment.
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.
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：
R. Aaij;A.S.W. Abdelmotteleb;C. Abellan Beteta;F. Abudinén;T. Ackernley;...
期刊：
Journal of Instrumentation,2024年19(03):P03010 ISSN：1748-0221
作者机构：
[U. Egede; Y. Fujii; T. Hadavizadeh; J.J. Lane; F.L. Liu; R. Song; E.J. Walton] School of Physics and Astronomy, Monash University, Melbourne, Australia;[J. Baptista de Souza Leite; I.B. Bediaga; M. Cruz Torres; U. De Freitas Carneiro Da Graca; J.M. De Miranda; A.C. dos Reis; L.N. Falcao; A. Gomes; A. Massafferri; L. Santoro; D. Torres Machado] Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil;[S. Amato; L. De Paula; F. Ferreira Rodrigues; M. Gandelman; A. Hicheur; J.H. Lopes; L. Meyer Garcia; I. Nasteva; J.M. Otalora Goicochea; E. Polycarpo; M.S. Rangel; B. Souza De Paula] Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil;[C. Dong; G. Gong; X. Hu; Y. Kang; A. Li; Z. Lian; Y. Luo; G.M. Ma; H. Mu; N. Qin; S. Qu; Y. Song; Y. Tan; D.Y. Tou; L. Xu; D. Yang; M. Zeng; L. Zhang; Y.Z. Zhang; X.Z. Zheng] Center for High Energy Physics, Tsinghua University, Beijing, China;[B. Batsukh; S. Chen; Y. Li; M. Tobin; Z. Xiang; Z. Xu; X. Yuan] Institute Of High Energy Physics (IHEP), Beijing, China
摘要：
Momentum measurements for very high momentum charged particles, such as muons from electroweak vector boson decays, are particularly susceptible to charge-dependent curvature biases that arise from misalignments of tracking detectors. Low momentum charged particles used in alignment procedures have limited sensitivity to coherent displacements of such detectors, and therefore are unable to fully constrain these misalignments to the precision necessary for studies of electroweak physics. Additional approaches are therefore required to understand and correct for these effects. In this paper the curvature biases present at the LHCb detector are studied using the pseudomass method in proton-proton collision data recorded at centre of mass energy √(s)=13 TeV during 2016, 2017 and 2018. The biases are determined using Z→μ+μ-decays in intervals defined by the data-taking period, magnet polarity and muon direction. Correcting for these biases, which are typically at the 10-4 GeV-1 level, improves the Z→μ+μ- mass resolution by roughly 18% and eliminates several pathological trends in the kinematic-dependence of the mean dimuon invariant mass.
作者：
Le Xiao;Wenjie Dai;Guoxiang Zhang;Zijie Zhou;Bihui You;...
期刊：
Journal of Instrumentation,2024年19(02):C02007 ISSN：1748-0221
作者机构：
[Le Xiao; Wenjie Dai; Guoxiang Zhang; Zijie Zhou; Bihui You; Xiangming Sun; Guangming Huang; Chaosong Gao; Cong Zhao; Ping Yang; Jiajia Liu; Di Guo; Liwen Yi; Qiaomu Tong; Wanhan Feng; Ziyang Tian] Department of Physics, Central China Normal University, Wuhan, Hubei 430079, P.R. China;[Yunpeng Lu; Yang Zhou; Ying Zhang] Institute of High Energy Physics, 19B Yuquan Road, Beijing 100049, P.R. China;[Lirong Xie; Ming Yang] School of Physical Science and Technology, Guangxi University, Nanning 530004, P.R. China
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 × 2.8 mm, which contains a pixel matrix of 64 rows by 64 columns, and the pixel size is 23.6 μ m × 20 μ m. The integration time is 5 μs, and the hit arrival time measurement accuracy is 10 ns.
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.
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.
作者：
Aaij, R.;Abdelmotteleb, A. S. W.;Beteta, C. Abellan;Abudinen, F.;Ackernley, T.;...
期刊：
Journal of High Energy Physics,2024年(2) ISSN：1029-8479
通讯作者：
Aaij, R
作者机构：
[Ketel, T.; Tuning, N.; Mauri, A.; Usachov, A.; Lukashenko, V.; Galati, M. D.; Heijhoff, K.; Veronesi, M.; Akiba, K.; Aaij, R.; Aaij, R; Snoch, A.; Biolchini, A.; Jans, E.; Greeven, L. M.; Geertsema, R. E.; Pellegrino, A.; Gabriel, E.; Merk, M.; Butter, J. S.; Koppenburg, P.; Soares, M. Senghi; Klaver, S.; Gras, C. Sanchez; Raven, G.; Sole, S. Ferreres; Kostiuk, I.; Schubiger, M.; Hulsbergen, W.] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.;[Da Graca, U. De Freitas Carneiro; Massafferri, A.; De Miranda, J. M.; Falcao, L. N.; Bediaga, I. B.; Torres, M. Cruz; Machado, D. Torres; Gomes, A.; dos Reis, A. C.; Leite, J. Baptista de Souza] CBPF, Rio De Janeiro, Brazil.;[De Paula, B. Souza; Lopes, J. H.; Goicochea, J. M. Otalora; Polycarpo, E.; Gandelman, M.; Rangel, M. S.; Hicheur, A.; Gomes, A.; Garcia, L. Meyer; Rodrigues, F. Ferreira; De Paula, L.; Nasteva, I.; Amato, S.; De Almeida, F. L. Souza] Univ Fed Rio de Janeiro, Rio de Janeiro, Brazil.;[Wang, Z.; Qu, S.; Qin, N.; Ren, Z.; Xu, L.; Tou, D. Y.; Wang, J.; Li, A.; Hu, X.; Tan, Y.; Gu, C.; Gong, G.; Kang, Y.; Qi, H. R.; Chen, C.; Zhu, X.; Luo, Y.; Yang, D.; Mu, H.; Zeng, M.; Dong, C.; Zhang, L.; Gan, Y.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.;[Lu, Y.; Li, Y.; Sheng, S.; Li, T.; Wang, J.; Chen, S.; Tobin, M.; Miao, D.; Jiang, X.; Batsukh, B.; Zou, Q.; Liu, S.] Inst High Energy Phys, Beijing, Peoples R China.
关键词：
B Physics;Flavour Physics;Hadron-Hadron Scattering;Rare Decay
摘要：
A search for rare B. D mu+ mu- decays is performed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. No significant signals are observed in the non-resonant mu+ mu- modes, and upper limits of B -> B0. D0 mu+ mu- < 5.1 x 10-8, B B+. D+ s mu+ mu- -> < 3.2 x 10-8, B -> B0 s. D0 mu+ mu--> < 1.6 x 10-7 and fc/fu center dot B B+ c. D+ s mu+ mu--> < 9.6 x 10-8 are set at the 95% confidence level, where fc and fu are the fragmentation fractions of a B meson with a c and u quark respectively in proton-proton collisions. Each result is either the first such measurement or an improvement by three orders of magnitude on an existing limit. Separate upper limits are calculated when the muon pair originates from a J/.. mu+ mu- decay. The branching fraction of B+ c. D+ s J/. multiplied by the fragmentation-fraction ratio is measured to be fc fu center dot B -> B+ c. D+ s J/.-> = (1.63 +/- 0.15 +/- 0.13) x 10-5, where the first uncertainty is statistical and the second systematic.
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.
作者机构：
[Wang, Xueqin; Liu, Chaoyue; Xie, Ying; Jia, Ya; Li, Tianyu; Yu, Dong] Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Jia, Y ] C;Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
关键词：
Two-compartment neuron;Chemical autapse;Gaussian white noise;Inverse stochastic resonance
摘要：
Inverse stochastic resonance (ISR) is a depression phenomenon of firing activity of neuron with respect to noise, and the characteristics of neural systems are determined by neuronal morphology. The effects of neuronal morphology on ISR remain unknown. Here, ISR effect in two-compartment neuron model is investigated. It is found that the neuronal morphology influences the number of stable states of neuronal discharge, thereby governs ISR effect. The ISR effect appears within the parameters region of bistable state, which is consistent with prior experimental and theoretical findings. With the increasing of time delay, average firing rate of neuron exhibits multiple local minima, which is known as multiple ISR. Time delay and coupling strength affect neuronal firing pattern by altering phase of stimulus and strength of autaptic current. These results may provide a novel perspective on ISR effect in nervous system.
期刊：
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS,2024年:1-10 ISSN：1951-6355
通讯作者：
Ya Jia
作者机构：
[Tianyu Li; Dong Yu; Yong Wu; Qianming Ding; Ya Jia] Department of Physics, Central China Normal University, Wuhan, China
通讯机构：
[Ya Jia] D;Department of Physics, Central China Normal University, Wuhan, China
摘要：
Transmission of weak signals in neural networks is crucial for understanding the functionality of brain. In this work, stochastic resonance (SR) in the three neuron FitzHugh–Nagumo (FHN) motifs and its small-world network with higher order motif interactions are studied. Simulation results show that a single motif induces SR and responds better to high-frequency weak signal. Stronger coupling strength within the motif increases the firing rate of the output neurons, resulting in a more pronounced resonance. Considering only the connections within the motif, a higher in-degree of the output neuron or a shorter minimum path length between input and output neurons will lead to a better response to weak signals. SR phenomena can also be observed in small-world networks composed of these motif. Increasing whether the motif coupling or node coupling strength enhances the firing rate of output neurons, amplifying the response. There is a very strong correlation between firing rate of output neurons and response. Our results may provide insights into the propagation of weak signals in higher order networks and the selection of appropriate network topology.
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：
[Wang, Xin-Nian; Yang, Zhong] Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079, China;[He, Yayun] Guangdong Provincial Key Laboratory of Nuclear Science, Institute of Quantum Matter, South China Normal University, Guangzhou 510006, China;[He, Yayun] Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Southern Nuclear Science Computing Center, South China Normal University, Guangzhou 510006, China;[Moult, Ian] Department of Physics, Yale University, New Haven, Connecticut 06511, USA;[Wang, Xin-Nian] Nuclear Science Division MS 70R0319, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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 γ-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.
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.
