A5067971564- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Astro and Planetary Science
- Geomagnetism and Paleomagnetism Studies
- Astronomy and Astrophysical Research
- Fluid Dynamics and Turbulent Flows
- Magnetic confinement fusion research
- Coronary Interventions and Diagnostics
- Stellar, planetary, and galactic studies
- Internet Traffic Analysis and Secure E-voting
- Software-Defined Networks and 5G
- Model Reduction and Neural Networks
- Planetary Science and Exploration
- GNSS positioning and interference
- Plasma Diagnostics and Applications
- Smart Grid and Power Systems
- Cardiovascular Health and Disease Prevention
- Aortic aneurysm repair treatments
- Network Security and Intrusion Detection
- Power Line Inspection Robots
- Lattice Boltzmann Simulation Studies
- Gamma-ray bursts and supernovae
- Cerebrovascular and Carotid Artery Diseases
- History and Developments in Astronomy
- Spectroscopy Techniques in Biomedical and Chemical Research
Boston University
2025
Shanghai East Hospital
2011-2024
Southeast University
2009-2024
Aerospace Information Research Institute
2020-2023
Chinese Academy of Sciences
2020-2023
Princeton University
1994-2023
Princeton Plasma Physics Laboratory
2015-2023
Virginia Tech
2022
China Medical University
2022
First Hospital of China Medical University
2022
Selective attention mechanisms route behaviorally relevant information through large-scale cortical networks. Although evidence suggests that populations of neurons synchronize their activity to preferentially transmit about attentional priorities, it is unclear how synchrony across a network accomplished. Based on its anatomical connectivity with the cortex, we hypothesized pulvinar, thalamic nucleus, regulates synchrony. We mapped pulvino-cortical networks within visual system, using...
We introduce an extensible multi-fluid moment model in the context of collisionless magnetic reconnection. This evolves full Maxwell equations and simultaneously moments Vlasov-Maxwell equation for each species plasma. Effects like electron inertia pressure gradient are self-consistently embedded resulting equations, without need to explicitly solving a generalized Ohm's law. Two limits discussed, namely, five-moment limit that scalar pressures ten-moment anisotropic, non-gyrotropic tensor...
Magnetohydrodynamic turbulence regulates the transfer of energy from large to small scales in many astrophysical systems, including solar atmosphere. We perform three-dimensional magnetohydrodynamic simulations with unprecedentedly magnetic Reynolds number reveal how rapid reconnection field lines changes classical paradigm turbulent cascade. By breaking elongated current sheets into chains flux ropes (or plasmoids), leads a previously undiscovered range cascade, where rate is controlled by...
The plasmoid instability in evolving current sheets has been widely studied due to its effects on the disruption of sheets, formation plasmoids, and resultant fast magnetic reconnection. In this Letter, we study role two-dimensional magnetohydrodynamic (MHD) turbulence by means high-resolution direct numerical simulations. At a sufficiently large Reynolds number (R_{m}=10^{6}), combined dynamic alignment turbulent intermittency lead copious plasmoids multitude intense sheets. sheet...
While it has been hypothesized that high plaque stress and strain may be related to rupture, its direct verification using in vivo coronary rupture data full 3-dimensional fluid-structure interaction models is lacking the current literature due difficulty obtaining imaging from patients with acute syndrome. This case-control study aims use high-resolution optical coherence tomography-verified seek evidence for stress/strain hypothesis.
Objectives: Hypoxia-inducible factor 1a (HIF-1a) is a pivotal regulator of hypoxic and ischaemic vascular responses that drives transcriptional activation hundreds genes involved in reactivity, angiogenesis arteriogenesis.Previous reports based on gene knockout technology have demonstrated HIF-1a can promote osteogenesis.However, this protein easily degraded normoxic state, which makes vitro studies HIF-1ainduced mesenchymal stem cell (MSC) osteogenesis difficult.For better understanding...
Abstract We studied the role of electron physics in 3‐D two‐fluid 10‐moment simulation Ganymede's magnetosphere. The model captures nonideal like Hall effect, inertia, and anisotropic, nongyrotropic pressure effects. A series analyses were carried out: (1) resulting magnetic field topology ion convection patterns investigated. fields shown to agree reasonably well with situ measurements by Galileo satellite. (2) collisionless reconnection carefully examined terms current sheet formation...
Abstract As a new Ionosphere Associate Analysis Center (IAAC) of the International GNSS Service (IGS), Chinese Academy Sciences (CAS) started routine computation real-time, rapid, and final Global Ionospheric Maps (GIMs) in 2015. The method for generation CAS rapid GIMs recent updates are presented paper. quality post-processed is assessed during 2015–2018 after maximum solar cycle 24. To perform an independent fair assessment, Jason-2/3 Vertical Total Electron Contents (VTEC) first used as...
The Border Gateway Protocol (BGP) is the primary routing protocol for Internet backbone, yet it lacks adequate security mechanisms. While simple BGP hijack attacks only involve an adversary hijacking traffic destined to a victim, more complex and challenging interception require that intercept victim's forward on victim. If attack launched incorrectly, adversary's will disrupt its route victim making impossible packets. To overcome these challenges, we introduce SICO (Surgical Interception...
As modeling of collisionless magnetic reconnection in most space plasmas with realistic parameters is beyond the capability today's simulations, due to separation between global and kinetic length scales, it important establish scaling relations model problems so as extrapolate scales. Recently, large scale particle-in-cell (PIC) simulations island coalescence have shown that time averaged rate decreases system size, while fluid systems at such scales Hall regime not been studied. Here we...
Abstract Mercury has a terrestrial‐like magnetosphere which is usually taken as scaled‐down‐version of Earth's with similar current system. We examine Mercury's magnetospheric system based on survey magnetic field measured by the Surface, Space Environment, Geochemistry, and Ranging spacecraft well computer simulations. show that there no significant Earth‐like ring flowing westward around Mercury, instead, we find, for first time, an eastward (EC) encircling planet near night‐side equator...
Nonlinear plasma physics problems are usually simulated through comprehensive modeling of phase space. The extreme computational cost such simulations has motivated the development multi-moment fluid models. However, a major challenge been finding suitable closure for these Recent developments in physics-informed machine learning have led to renewed interest constructing accurate terms. In this study, we take an approach that integrates kinetic from first-principles Vlasov into model...
For the first time, we explore tightly coupled interior-magnetosphere system of Mercury by employing a three-dimensional ten-moment multifluid model. This novel fluid model incorporates non-ideal effects including Hall effect, inertia, and tensorial pressures that are critical for collisionless magnetic reconnection; therefore, it is particularly well suited investigating $collisionless$ reconnection in Mercury's magnetotail at planet's magnetopause. The able to reproduce observed field...
The integration of kinetic effects in fluid models is important for global simulations Earth's magnetosphere. use the two-fluid ten-moment model, which includes pressure tensor both species, has had some success simulating Ganymede and Mercury with a simple closure model. We discuss heat flux accounts limitations earlier work while remaining computationally tractable. Comparisons magnetic reconnection lower-hybrid drift instabilities show good agreement results improvements on previous models.
Kinetic approaches are generally accurate in dealing with microscale plasma physics problems but computationally expensive for large-scale or multiscale systems. One of the long-standing is integration kinetic into fluid models, which often achieved through sophisticated analytical closure terms. In this paper, we successfully construct a multimoment model an implicit included neural network using machine learning. The trained small fraction sparsely sampled data from simulations Landau...
Atherosclerotic plaque progression and rupture play an important role in cardiovascular disease development the final drastic events such as heart attack stroke. Medical imaging image-based computational modeling methods advanced considerably recent years to quantify morphology biomechanical conditions gain a better understanding of evolution process. This article first briefly reviewed clinical techniques for coronary thin-cap fibroatheroma (TCFA) plaques used modeling. was followed by...
A large number of heliophysicists from across career levels, institution types, and job titles came together to support a poster at Heliophysics 2050 the position papers for 2024 decadal survey titled “Cultivating Culture Inclusivity in Heliophysics,” “The Importance Policies: It’s not just pipeline problem,” “Mentorship within Heliophysics.” While writing these papers, people who privately shared disturbing stories experiences bullying harassment was shocking. The expressed how burned out...
Background Lean body mass has been identified as a key determinant of left ventricular and wall thickness. However, the importance lean or other body-size measures normative determinants carotid intima-media thickness (cIMT), widely used early indicator atherosclerosis, not well established. Methods Results Carotid artery ultrasound measurements cIMT plaque burden (derived from number maximum size) size, including height, index, weight, fat proportion, ([1-body proportion]×weight), were...