A5101720175- Liquid Crystal Research Advancements
- Geotechnical Engineering and Soil Mechanics
- Plant Reproductive Biology
- Bauxite Residue and Utilization
- Geotechnical Engineering and Underground Structures
- Orbital Angular Momentum in Optics
- Metal Forming Simulation Techniques
- Geotechnical Engineering and Analysis
- Photonic Crystals and Applications
- 3D Printing in Biomedical Research
- Smart Grid Energy Management
- Mechanical stress and fatigue analysis
- Modular Robots and Swarm Intelligence
- Advanced Optical Imaging Technologies
- Additive Manufacturing and 3D Printing Technologies
- Industrial Technology and Control Systems
- High-Velocity Impact and Material Behavior
- Thermal Analysis in Power Transmission
- Geomechanics and Mining Engineering
- Geotechnical Engineering and Soil Stabilization
- High voltage insulation and dielectric phenomena
- Concrete and Cement Materials Research
- Recycling and utilization of industrial and municipal waste in materials production
- Metallurgy and Material Forming
- Modeling, Simulation, and Optimization
Thermal Power Research Institute
2023-2024
Taiyuan University of Technology
2022-2024
Beijing Center for Disease Prevention and Control
2022-2024
Beihang University
2017-2023
Institute of Disaster Prevention
2023
Nanjing University
2020-2022
Wuhan University of Technology
2021
Southeast University
2017-2018
National University of Defense Technology
2009-2016
Beijing Jiaotong University
2015
Optical spatial differentiation is a typical operation of optical analog computing and can single out the edge to accelerate subsequent image processing, but in some cases, overall information about object needs be presented synchronously. Here, we propose multifunctional device based on structured chiral photonic crystals for simultaneous realization real-time dual-mode imaging. This differentiator realized by self-organized large-birefringence cholesteric liquid crystals, which are...
Cascaded holography coupled with the secret-sharing scheme has recently gained considerable attention due to its enhanced information processing and encryption capabilities. Here, we propose a new holographic iterative algorithm present implementation of cascaded liquid crystal (LC) for optical encryption. Each LC layer acts as secret key can generate distinct image. By cascading two elements, image is formed. Additionally, showcase dynamic achieved by electrically switching LCs combined...
Abstract Background The aim of this study was to investigate the changes epidemic characteristics influenza activity pre– and post–coronavirus disease 2019 (COVID-19) in Beijing, China. Methods Epidemiologic data were collected from surveillance system Beijing. We compared intensity, onset duration, transmissibility during 2022–2023 season with pre-COVID-19 seasons 2014 2020. Results overall incidence rate significantly higher than that period, record-high level intensity duration period...
Abstract The operational instability of hydraulic turbine units poses a prevalent and significant challenge. Pressure pulsations occupy prominent position among the primary factors contributing to vibrations. Consequently, exploring correlation between internal flow field pressure within turbines constitutes pivotal research focus in contemporary vibration studies such units. In this study, three-dimensional geometric model Wudongde Francis was developed. Using ICEM CFD for meshing,...
As a major CO2 emission source, the low-carbon development of power sector requires sector's own efforts and cooperation with other industries, especially in context rapid renewable generation technologies. The industrial demand response resources (IDRR) will be helpful to improve wind penetration bring benefits if they are utilized provide ancillary services (AS) for system. In this paper, (DR) characteristics users firstly analyzed according their production process electricity consumption...
The explosive growth of information urgently requires extending the capacity optical communication and processing. Orbital-angular-momentum-based mode division multiplexing (MDM) is recognized as most promising technique to improve bandwidth a single fiber. To make it compatible with dominant wavelength (WDM), broadband equal high-efficient phase encoding highly pursued. Here, we propose twisted-liquid-crystal rear-mirror-based design for ultrabroadband reflective planar optics. backtracking...
The capacity of an optical communication system can be greatly increased by using separate orbital angular momentum (OAM) modes as independent channels for signal transmission and encryption. At present, a transmissive OAM mode generator compatible with wavelength division multiplexing is being highly pursued. Here, we introduce specific double-layer reverse-twist configuration into liquid crystal polymer (LCP) to overcome dependency. With this design, broadband-applicable array generators...
As modern underground mining progresses deeper, the elevated stress condition often translates to a greater seismic and rockburst hazard.The sudden violent failure of rock associated with rockbursts poses significant threat safety profitability operation.There is wide range practices strategies for managing risks which are currently accepted implemented in industry.The damage risk, however, managed, amongst other techniques, implementation dynamically resistant support systems.The current...
Bessel vortex beams (BVBs) are endowed with non-diffracting properties and carry specific orbital angular momentum, which adds a new degree of freedom in the manipulation light. A patterned liquid crystal polymer (LCP)-based optical anisotropic film is proposed demonstrated for generation BVBs. The axis distribution induced by functionalized film, can simultaneously modulate amplitude phase wavefront. Different BVB modes be obtained this manner. topological charges BVBs experimentally...
In this paper, the engineering characteristics of soft soil in Guan-Yun section Lian-Yan railway were evaluated based on CPTU test. The layer and classification performed by using multi-functional On basis results test, in-situ state parameters including over consolidation ratio undrained shear strength provided. Simultaneously, permeability studied. showed that silt mucky was slightly overconsolidated clay overconsolidated. Moreover, coefficient small rate settlement slow. revealed site...
Important network attack and defense problems can be modeled as interdiction. In this paper we propose a new threshold shortest-path interdiction model (MIRGT) based on maximization shortest path problem, which minimizes the resources consumption while limiting rival's capacity to meet goal threshold. We then select representative feedback dependency relation of multi-layer network, novel MIRGT-B bi-layer using logic constraint replace nonlinear constraint. Based Benders decomposition dual...