Ji Zhang

ORCID: 0000-0001-8299-6101
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About
Contact & Profiles
Research Areas
  • Graphene research and applications
  • Error Correcting Code Techniques
  • Advanced Wireless Communication Techniques
  • Advanced Computational Techniques and Applications
  • Monetary Policy and Economic Impact
  • Carbon Nanotubes in Composites
  • Digital Media and Visual Art
  • Semiconductor materials and devices
  • Economic Theory and Policy
  • Cooperative Communication and Network Coding
  • Advancements in Semiconductor Devices and Circuit Design
  • Power Systems and Technologies
  • Smart Grid and Power Systems
  • Metal and Thin Film Mechanics
  • Chinese history and philosophy
  • Surface Modification and Superhydrophobicity
  • Adhesion, Friction, and Surface Interactions
  • Network Security and Intrusion Detection
  • Laser-Matter Interactions and Applications
  • Diamond and Carbon-based Materials Research
  • Photonic and Optical Devices
  • Advanced Battery Materials and Technologies
  • Topic Modeling
  • Advanced Sensor and Energy Harvesting Materials
  • Laser Design and Applications

Tsinghua University
2016-2024

University of Southern Queensland
2020-2024

Xidian University
2008-2024

Beijing Institute of Technology
2005-2024

State Grid Corporation of China (China)
2024

Zhejiang Lab
2024

Advanced Technology & Materials (China)
2024

China Institute of Atomic Energy
2022

Yunnan University
2022

UNSW Sydney
2022

To determine the impact of enhanced apolipoprotein (apo) E secretion on mechanism remnant lipoprotein uptake, rat hepatoma cells (McA-RH7777) were stably transfected with normal human apoE3 or receptor binding-defective apoE-Leiden. After a 2-h incubation, apoE secreted from hepatocytes was 10-12 times greater than endogenous apoE. The apoE3-transfected bound and internalized rabbit beta-very low density lipoproteins (beta-VLDL) to much degree did apoE-Leiden-transfected nontransfected...

10.1016/s0021-9258(17)42009-6 article EN cc-by Journal of Biological Chemistry 1994-01-01

The specific heat and thermal conductivity of graphene were comprehensively measured by an improved Raman method without pre-knowledge laser absorption.

10.1039/c7nr01695f article EN Nanoscale 2017-01-01

Abstract Rat hepatoma McA-RH7777 cells transfected with a human hepatic lipase (HL) cDNA synthesized and secreted 50-80 ng of HL/mg cell protein at 4 h, approximately 50% which was bound to cell-surface heparan sulfate proteoglycans (HSPG). The newly HL possessed enzymatic activity. When rabbit beta-very low density lipoproteins (beta-VLDL) canine chylomicrons or chylomicron remnants were incubated HL-secreting cells, remnant binding uptake enhanced 3-fold compared nontransfected cells....

10.1016/s0021-9258(17)36850-3 article EN cc-by Journal of Biological Chemistry 1994-05-01

The initial step in the clearance of apolipoprotein (apo) E-enriched remnant lipoproteins from plasma appears to be sequestration within liver mediated by their binding heparan sulfate proteoglycans (HSPG). surface-bound remnants are believed internalized interaction with low density lipoprotein (LDL) receptor-related protein or LDL receptor. Cholesterol-induced rabbit beta-very (beta-VLDL) enriched human apoE3 display 4-5-fold enhanced cultured cells. present study attempts determine...

10.1016/s0021-9258(17)36849-7 article EN cc-by Journal of Biological Chemistry 1994-05-01

Due to the high global warming potential (GWP) of SF6, use new gases in electrical equipment has drawn increasing attention. Here, application environmental-friendly gas dodecafluoro-2-methylpentan-3-one (C6F12O) and CO2 mixture 10 kV medium-voltage switchgear is studied. First, basic physical chemical properties C6F12O were discussed, toxicity safety its was analysed. Then, breakdown voltage measured laboratory. The power-frequency test carried out with mixing ratio 2, 4 6% at 0.1∼0.2 MPa,...

10.1049/iet-smt.2018.5482 article EN IET Science Measurement & Technology 2019-03-22

Quasi-cyclic LDPC (QC-LDPC) codes have been accepted as the standard of 5G enhanced mobile broadband data channel. These are designed to support multiple lifting sizes and possess rate-compatible property, which can help adapt various information lengths code rates well. In this paper, we propose an <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">algebra-assisted</i> method for constructing QC-LDPC with such properties. We will first review...

10.1109/access.2018.2868963 article EN cc-by-nc-nd IEEE Access 2018-01-01

Molecular dynamics simulations of armchair graphene nanoribbons and zigzag with different sizes were performed at room temperature. Double vacancy defects introduced in each nanoribbon its center or edge. The effect defect on the mechanical behavior was studied by comparing stress–strain response fracture toughness pair pristine defective nanoribbon. Results show that vacancies is more profound than Also, double ultimate failure stress greater due to bond orientation respect loading...

10.1177/1056789518764282 article EN International Journal of Damage Mechanics 2018-03-27

Using molecular dynamics simulations, graphene nanoribbons with armchair chirality were subjected to displacement-controlled uniaxial tension until complete fracture at 300 K in order understand their damage mechanics. Graphene and without a vacancy defect simulated compare the effect of on behavior. Simulations performed for lengths ranging from 2.5 15 nm. The stress–strain curve each case is reported, influence material properties discussed. For sample, mechanics types observed Results...

10.1177/1056789516645645 article EN International Journal of Damage Mechanics 2016-04-28

Large language models (LLMs) have advanced the development of various AI conversational agents, including role-playing agents that mimic diverse characters and human behaviors. While prior research has predominantly focused on enhancing capability, role-specific knowledge, stylistic attributes these there been a noticeable gap in assessing their social intelligence. In this paper, we introduce RoleInteract, first benchmark designed to systematically evaluate sociality at both individual...

10.48550/arxiv.2403.13679 preprint EN arXiv (Cornell University) 2024-03-20

Abstract Distributed optical fiber sensing (DOFS) systems are valuable tools for monitoring various physical parameters (e.g., temperature, pressure, strain). DOFS systems, however, remain a challenge achieving high spatial resolution in narrow spaces due to the bulky external demodulation techniques. Herein, by taking advantage of inhomogeneity‐induced higher‐order modes, tapered fiber‐based distributed sensor is developed monitor contact position and force deep learning simultaneously. The...

10.1002/adom.202303118 article EN Advanced Optical Materials 2024-04-09

Abstract The 0‐3 type CaBi 4 Ti O 15 :30 wt%BiFeO 3 composite shows much better high‐temperature piezoelectric properties than the single‐phase or BiFeO ceramics. with connectivity exhibits a high density of 7.01 g/cm , saturated polarization 21.5 μC/cm 2 and an enhanced d 33 25 pC/N. After poled was annealed at 600°C, its is 21 pC/N room temperature. Resistance decreases slowly from 10 9 ohm 20°C to ~10 5 500°C. Furthermore, strong radial thickness dielectric resonances 20°C‐500°C.

10.1111/jace.14879 article EN Journal of the American Ceramic Society 2017-04-21

Topic models and neural networks can discover meaningful low-dimensional latent representations of text corpora; as such, they have become a key technology document representation. However, such presume all documents are non-discriminatory, resulting in representation dependent upon other an inability to provide discriminative To address this problem, we propose semi-supervised manifold-inspired autoencoder extract documents, taking the local perspective that nearby should be correlative. We...

10.1371/journal.pone.0146672 article EN cc-by PLoS ONE 2016-01-19

This paper develops a New Keynesian model featuring financial inter-mediation, short and long term bonds, credit shocks, scope for unconventional monetary policy. The log-linearized reduces to four key equations — Phillips curve, an IS equation, policy rules the nominal interest rate central bank's bond portfolio (QE). equation collapses standard three under simple parameter restriction. Credit shocks QE appear in both curves. Optimal entails adjusting offset natural but using market...

10.2139/ssrn.3625622 article EN SSRN Electronic Journal 2020-01-01

At present, the level of urbanization in China has exceeded 50% and number car ownership reached 140 million. The consequent problem traffic congestion become increasingly prominent. It is important that how to get basic vehicle information real time accurately so department can timely manage vehicles specific road sections intersections. some related methods algorithms have high real-time performance, but accuracy not or contrary. Accordingly, this paper proposes a method automatic...

10.1117/12.2309844 article EN 2018-05-21

Zigzag graphene nanoribbons with and without single vacancy defect are strained under uniaxial tension using molecular dynamics simulations. In order to understand the influence of on damage mechanics, categorized into six groups based their width, ranging from 2.5 nm 15 nm. each group, length GRNGNR also varied The comparison stress–strain relationship fracture behavior pristine defective nanoribbon demonstrate that has little elastic modulus ultimate strength nanoribbons. However, size...

10.1177/1056789516671795 article EN International Journal of Damage Mechanics 2016-09-28

10.1016/j.commatsci.2018.06.026 article EN publisher-specific-oa Computational Materials Science 2018-06-23

Target-dependent sentiment analysis (TDSA) aims to classify the of a text towards given target. The major challenge this task lies in modeling semantic relatedness between target and its context sentence. This paper proposes novel Target-Guided Structured Attention Network (TG-SAN), which captures target-related contexts for TDSA fine-to-coarse manner. Given sentence, proposed TG-SAN first identifies multiple segments from sentence using target-guided structured attention mechanism. It then...

10.1162/tacl_a_00308 article EN cc-by Transactions of the Association for Computational Linguistics 2020-04-17

Reducing lunar dust adhesion to various material surfaces is important for protecting equipment from damage during exploration missions. In this study, we investigate the dust-mitigation ability and force of aluminum (Al) substrates prepared using different etching methods. Among them, composite methods (combining chemical electrochemical steps) can result in multiscale structures with micro- nanoroughness, reducing contact area between substrate thus decreasing adhesion. After etching, Al...

10.1021/acsami.2c07237 article EN ACS Applied Materials & Interfaces 2022-07-12
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