A5101945813- Pulsars and Gravitational Waves Research
- Geophysics and Gravity Measurements
- Astrophysical Phenomena and Observations
- Cryptography and Data Security
- Complexity and Algorithms in Graphs
- Inertial Sensor and Navigation
- Nuclear physics research studies
- Astronomy and Astrophysical Research
- Microgrid Control and Optimization
- Atomic and Molecular Physics
- Adaptive optics and wavefront sensing
- Gamma-ray bursts and supernovae
- Video Coding and Compression Technologies
- Smart Grid Energy Management
- Neutrino Physics Research
- Innovative Energy Harvesting Technologies
- Advanced Chemical Physics Studies
- Modular Robots and Swarm Intelligence
- Galaxies: Formation, Evolution, Phenomena
- Quantum Chromodynamics and Particle Interactions
- Stellar, planetary, and galactic studies
- Coding theory and cryptography
- Atomic and Subatomic Physics Research
- Advanced Image Processing Techniques
- Sparse and Compressive Sensing Techniques
City University of Hong Kong, Shenzhen Research Institute
2024
Beihang University
2024
Hefei University
2024
City University of Hong Kong
2024
State Key Laboratory of Nuclear Physics and Technology
2017-2023
Shanghai University of Electric Power
2023
Peking University
2017-2023
Chinese Academy of Sciences
2014
University of Science and Technology of China
2014
X-ray pulsar-based navigation (XNAV) is an ideal mode for deep spacecraft. In order to overcome the time-varying frequency problem caused by acceleration of spacecraft in process photons TOA data, this paper proposes improved method called Non-uniform epoch folding (NUEF). Specifically, analyzes mechanism traditional EF method, and then divides into two key stages: Density Analysis Digital Filtering. Draws conclusion that limit pulse time delay estimation accuracy mathematical expectation...
Aims. The accuracy of the pulsar period estimation directly affects restoration effect signal profile. A more accurate profile will help improve delay and thereby performance X-ray navigation. This paper proposes a method based on photon energy distribution folding image template matching (PETM). Methods. uses probability information for weighted epoch folding. one-dimensional (1D) was converted into two-dimensional (2D) through reverse space-filling curve (SFC) encoding. Then, feature...
Abstract In order to apply the Z 2 statistic estimation of navigation pulsar period and time delay, thus further improve accuracy X-ray navigation, this paper proposes a method for estimating delay with complex profiles based on improved <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msubsup> <mml:mi>Z</mml:mi> <mml:mrow> <mml:mi>n</mml:mi> <mml:mo>,</mml:mo> <mml:mi>bin</mml:mi> </mml:mrow> <mml:mn>2</mml:mn> </mml:msubsup> </mml:math> -test. Based prior...
Transitional millisecond pulsars (tMSPs) represent a crucial link between the rotation-powered and accretion-powered states of binary . During their active X-ray state, tMSPs are only low-mass systems detected up to GeV energies by Large Area Telescope (LAT). is newly discovered tMSP candidate in an state potentially spatially compatible with faint gamma-ray source listed latest point-source catalogue as Confirming association key step towards validating its classification tMSP. We analysed...
We investigate the mass–metallicity relation and its dependence on galaxy physical properties with a sample of 703 Lyman-break analogues (LBAs) in local Universe, which have similar to high-redshift star-forming galaxies. The is selected according Hα luminosity, L(Hα) > 1041.8 erg s−1, surface brightness, I(Hα) 1040.5 s−1 kpc−2, criteria. LBAs harmoniously agrees that galaxies at z ∼ 1.4–1.7 stellar mass range 108.5 M⊙ < M★ 1011 M⊙. between mass, metallicity star formation rate our roughly...
The decay properties of the short-lived isotope $^{220}\mathrm{Pa}$ were re-investigated via reaction $^{40}\mathrm{Ar}+^{187}\mathrm{Re}$ at gas-filled recoil separator Spectrometer for Heavy Atoms and Nuclear Structure. digital pulse processing technique was applied to resolve evaporation residues--$\ensuremath{\alpha}$ ($\mathrm{ER}\ensuremath{-}\ensuremath{\alpha}$) pileup signals in $^{220}\mathrm{Pa}$. $\ensuremath{\alpha}$-decay chain leading well-known $^{216}\mathrm{Ac}$ established...
The $\ensuremath{\alpha}$ decay of $^{222}\mathrm{U}$ was reinvestigated using a general least-square superpulse fitting algorithm dedicated to resolving pileup signals in the very short-lived nuclei. $\ensuremath{\alpha}$-particle energy revised be 9246(8) keV, and precision improved significantly compared with previous result. Using present energy, anomaly systematics $\ensuremath{\alpha}$-decay reduced width ${\ensuremath{\delta}}^{2}$ observed at ${N}_{p}{N}_{n}$ scheme is solved, all...
We extend the beam-search based joint rate-distortion optimization (BSJRDO) [1] to High Efficiency Video Coding (HEVC) and investigate impact of different decisions on it. In BSJRDO, unlike greedy search, which only maintains one locally optimal path at each decision stage, multiple paths are kept as candidates for future referencing.
Context. Pulsar wind nebulae (PWNe) are a source of very high energy radiation that can reach up to tera-electron volts and even peta-electron volts. Our work uses the pulsar tree, graph theory tool recently presented analyze population select candidates interest. Aims. We aim discover detectable PWNe. also test what extent tree is able group PWNe despite only considering intrinsic properties pulsars. Methods. selected four pulsars as volt based on their positions in tree. Using observed...
Abstract Piezoelectric energy harvesting (EH) is very important for environment protection. Here we developed a novel regulable phononic crystals (PnCs) featuring screw-nut structures as an valve in wave transmission environment. It fabricated by additive manufacturing experimental tests. By regulating the nut of designed PnCs, peak output voltage and electric power EH system can be varied range 0.066 to 2.15 times 0.004 4.63 times, respectively, compared unregulated PnCs. The performance...
In this paper, a microgrid economic optimization model considering the needs of users is established. By adding user demand side response, peak-valley difference load reduced without affecting experience, and reliability power consumption improved. The Oracle penalty function added to DBO algorithm deal with scheduling, which improves global search ability algorithm. Simulation results demonstrate effectiveness proposed