A5101900739- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Wireless Communication Security Techniques
- Advanced Computational Techniques and Applications
- Underwater Vehicles and Communication Systems
- Adaptive Control of Nonlinear Systems
- Advanced Algorithms and Applications
- Advanced Wireless Communication Technologies
- Advanced Sensor and Control Systems
- Speech and Audio Processing
- Nuclear Physics and Applications
- Cooperative Communication and Network Coding
- UAV Applications and Optimization
- Direction-of-Arrival Estimation Techniques
- Magnetic Properties and Applications
- Advanced DC-DC Converters
- Dark Matter and Cosmic Phenomena
- Industrial Automation and Control Systems
- Cold Atom Physics and Bose-Einstein Condensates
- Industrial Technology and Control Systems
- Maritime Navigation and Safety
- Control and Dynamics of Mobile Robots
- Optical Network Technologies
- Advanced Photonic Communication Systems
Nanchang University
2007-2024
Yulin Normal University
2024
Jilin Business and Technology College
2023
Jilin Province Science and Technology Department
2023
University of Bristol
2022
Tsinghua University
2022
Universidade Federal do Rio de Janeiro
2014-2021
Huazhong University of Science and Technology
2008-2021
European Organization for Nuclear Research
2021
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
2020-2021
The first observation of exotic states with a new quark content $c \bar{c} u \bar{s}$ decaying to the $J/\psi K^+$ final state is reported high significance from an amplitude analysis $B^+ \to J/\psi \phi decay. carried out using proton-proton collision data corresponding total integrated luminosity 9 fb$^{-1}$ collected by LHCb experiment at centre-of-mass energies 7, 8 and 13 TeV. most significant state, $Z_{cs}(4000)^+$, has mass $4003\pm6\,^{+\,\phantom{0}4}_{-\,14}$ MeV, width...
This paper investigates the loss characteristics of RF magnetic materials for power conversion applications in 10 to 100 MHz range. A measurement method is proposed that provides a direct an inductor quality factor <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">QL</i> as function current at frequencies, and enables indirect calculation core flux density. Possible sources error are evaluated addressed. The used identify several commercial...
In this article, the three-dimensional trajectory tracking control of an autonomous underwater vehicle is addressed. The assumed to be underactuated and system parameters external disturbances are unknown. First, five degrees freedom kinematics dynamics model acquired. Following this, reduced-order linear extended state observers designed estimate compensate for uncertainties that exist in disturbances. A backstepping active disturbance rejection method with help a time-varying barrier...
Using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of $8.5\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, observation new excited ${\mathrm{\ensuremath{\Xi}}}_{b}^{0}$ resonance decaying ${\mathrm{\ensuremath{\Xi}}}_{b}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ final state is presented. The state, referred as ${\mathrm{\ensuremath{\Xi}}}_{b}(6227{)}^{0}$, has measured mass and natural width...
The first observation of the Cabibbo-suppressed decay Λ 0 → J/ψpπ − is reported using a data sample proton-proton collisions at 7 and 8 TeV, corresponding to an integrated luminosity 3 fb−1. A prominent signal observed branching fraction relative mode J/ψpK determined be $$ \frac{\mathrm{\mathcal{B}}\left({\varLambda}_b^0\to J/\psi p{\pi}^{-}\right)}{\mathrm{\mathcal{B}}\left({\varLambda}_b^0\to p{K}^{-}\right)} = 0.0824\pm 0.0025\ \left(\mathrm{stat}\right)\pm 0.0042\...
A bstract The time-dependent CP asymmetries of B 0 → π + − and $$ {B}_s^0 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mi>B</mml:mi><mml:mi>s</mml:mi><mml:mn>0</mml:mn></mml:msubsup></mml:math> K decays are measured using a data sample pp collisions corresponding to an integrated luminosity 1.9 fb 1 , collected with the LHCb detector at centre-of-mass energy 13 TeV. results {\displaystyle \begin{array}{c}{C}_{\pi \pi}=-0.311\pm 0.045\pm 0.015,\\ {}{S}_{\pi...
The photon polarization in $b \to s \gamma$ transitions is measured for the first time radiative b-baryon decays exploiting unique spin structure of $\Lambda_b \Lambda decays. A data sample corresponding to an integrated luminosity $6\;fb^{-1}$ collected by LHCb experiment $pp$ collisions at a center-of-mass energy $13\;TeV$ used. be $\alpha_{\gamma}= 0.82^{\,+\,0.17\,+\,0.04}_{\,-\,0.26\,-\,0.13}$, where uncertainty statistical and second systematic. This result agreement with Standard...
This work presented a novel route for the synthesis of pyridine bases from glycerol and ammonia. The whole process consisted dehydration to acrolein subsequent condensation ammonia bases, with two reactions being conducted either simultaneously over single catalyst in conventional fixed-bed reactor (single-stage mode) or separately different catalysts, namely, pair, series-connected (two-stage mode). Under optimized conditions, 32.18% total yield was achieved HZSM-5-At-acid catalyst, while...
This paper investigates the loss characteristics of several commercial rf magnetic materials for power conversion applications in 10 MHz to 100 range. A measurement method is proposed that provides a direct inductor quality factor QL as function current at frequencies, and enables indirect calculation core flux density. Possible sources error are evaluated addressed. The used identify different materials. these materials, which have not previously been available, illustrated compared tables...
In this paper, a soft-switching proximate time-optimal control (PTOC) is proposed based on the model-compensation extended state observer (ESO) and Takagi-Sugeno fuzzy switching, for fast set-heading tracking of underactuated autonomous underwater vehicle (AUV). First, Pontryagin's maximum principle, (TOC) law derived first-order Nomoto model AUV. Then, active disturbance rejection (ADRC) developed; outstanding characteristic that nonlinear heading dynamic compensated to rather than by...
Abstract This study aims to increase the amount of electrical energy harvested from a piezoelectric vibration harvester under unloaded and high-load resistance conditions. Although increased charge due synchronized switch harvesting on inductor (SSHI) strategy damps mechanical vibrations, amplitude element in is assumed be constant for most discussions regarding active with SSHI strategy. However, this assumption not valid excessive switching actions, which case performance deteriorates....
The overall architectural complexity of autonomous underwater vehicles continuous to increase, enlarging the probability fault occurrence in subsystems. Estimating thrust loss by particle filter provided a useful method detect propeller subsystem. In order propellers as early possible, direct prediction could amplify trend and earlier, but at same time increase possibility false diagnosis. Therefore, more accurate diagnosis was required discover decrease this paper, an improved proposed,...
This paper studies a single UAV-enabled secure data dissemination system, in which the UAV is employed as an aerial base station to secretly communicate with multiple ground users. To prevent confidential signal intended scheduled users overhearing by unscheduled ones, artificial noise (AN) introduced and transmits mixture of priori known AN user at each time slot. The trajectory power splitting factor well scheduling are jointly optimized maximize minimum average secrecy rate over finite...
A propagator method (PM) using fourth-order cumulant is proposed to estimate direction-of-arrival (DOA), which firstly computes properly chosen cumulants of sensor outputs construct virtual array with one times larger expanded aperture, then applies the without eigen-decomposition DOA. The algorithm doesn't require number signals smaller sensors, and computational efficiency as it need spectrum peak search. Simulation results, furthermore, show that correct estimation probability...
A bstract The difference between the CP asymmetries in decays Λ c + → pK − K and pπ π is presented. Proton-proton collision data taken at centre-of-mass energies of 7 8 TeV collected by LHCb detector 2011 2012 are used, corresponding to an integrated luminosity 3 fb −1 . candidates reconstructed as part b 0 μ X decay chain. In order maximize cancellation production detection difference, final-state kinematic distributions two samples aligned applying phase-space-dependent weights sample....
Summary This paper deals with the use of jamming transmission for secure amplify‐and‐forward‐based relay networks total power constraints. An approach that source and some their available to transmit signals in order create interference at eavesdropper is investigated. Assume destination have an a priori knowledge signals. A allocation policy defines how distributed between message signal presented. The results show proposed can increase secrecy level positive rate be achieved even when may...
The first full angular analysis and an updated measurement of the decay-rate CP asymmetry D^{0}→π^{+}π^{-}μ^{+}μ^{-} D^{0}→K^{+}K^{-}μ^{+}μ^{-} decays are reported. uses proton-proton collision data collected with LHCb detector at center-of-mass energies 7, 8, 13 TeV. dataset corresponds to integrated luminosity 9 fb^{-1}. set -averaged observables their asymmetries measured as a function dimuon invariant mass. results consistent expectations from standard model symmetry.
Sandstone is different from pure brittle rocks such as marble and granite. Its brittleness weakens then increases with increasing confining pressure. This paper establishes a calculation model of the “brittleness-ductility” energy drop coefficient that characterizes whole process sandstone failure perspective energy. The obtained result was compared traditional model. results show established more consistent experimental phenomenon can describe precisely at macro level. Moreover, practical...
Abstract The cross sections of the 138 Ce( n , 2 ) 137m,g Ce reactions and their isomeric section ratios σ m / g were measured at three neutron energies between 13.5 14.8 MeV using activation technique. CeO samples Nb monitor foils activated together to determine reaction incident flux. monoenergetic beams formed via 3 H( d 4 He reaction. activities induced in products high-resolution γ -ray spectroscopy. pure ground-state was derived from absolute metastable state residual nuclear decay...