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Diversity Glass Antennas for Tri-Band WiFi Applications Article

Peng Fei Hu, Kwok Wa Leung, Kwai Man Luk, Yong Mei Pan, Shao Yong Zheng

Engineering 2023, Volume 23, Issue 4,   Pages 157-169 doi: 10.1016/j.eng.2022.09.011

Abstract: 0.0001pt">This paper investigates two novel polarization- and pattern-diversity glass dielectric resonator antennasAll three of the new diversity antennas were fabricated and measured to verify the simulations.In our experiment, the bit error rate (BER) of the three diversity glass antennas and the reference space-diversity

Keywords： WiFi Diversity antennas Multi-frequency     Glass     Dielectric resonator antennas     Multiple-input multiple-output    

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IEEE 802.16 Mesh Network SA Management Mechanism Based on Multi-hops Mutual Authentication

Wang Xingjian,Hu Aiqun,Huang Yuhua

Strategic Study of CAE 2006, Volume 8, Issue 9,   Pages 69-73

Abstract:

Mesh network supported by IEEE802.16-2004 wireless-MAN standard is a fresh network combining treesecurity and efficiency of one-hop one-way authentication SA (security association) mechanism employed by Mesh

Keywords： IEEE 802.16     mesh     node     multi-hops mutual authentication     self-modified routing    

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Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 9-9 doi: 10.1007/s11465-021-0665-z

Abstract: Gear wear is one of the most common gear failures, which changes the mesh relationship of normal gearA new mesh relationship caused by gear wear affects meshing excitations, such as mesh stiffness and transmissionThis paper aims to establish the model of mesh relationship and reveal the vibration characteristicsthe influence of gear wear on mesh stiffness and unloaded static transmission error (USTE).Based on the mesh stiffness and USTE considering gear wear, a gear dynamic model is established, and

Keywords： gear wear     mesh relationship     mesh stiffness     transmission error     vibration characteristics    

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Recent Advances in Space-Deployable Structures in China

Xiaofei Ma, Tuanjie Li, Jingya Ma, Zhiyi Wang, Chuang Shi, Shikun Zheng, Qifeng Cui, Xiao Li, Fan Liu, Hongwei Guo, Liwu Liu, Zuowei Wang, Yang Li

Engineering 2022, Volume 17, Issue 10,   Pages 207-219 doi: 10.1016/j.eng.2022.04.013

Abstract: research status and development trend of spacedeployable structures in China, including large space meshantennas, space solar arrays, and deployable structures and mechanisms for deep-space explorationFinally, future technology developments and trends are elucidated in the fields of mesh antennas

Keywords： Deployable space structures     Mesh antennas     Solar arrays     Deep-space exploration    

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Numerical studies of dynamic behavior of liquid film on single-layer wire mesh with different wettabilities

Frontiers of Chemical Science and Engineering   Pages 1672-1680 doi: 10.1007/s11705-022-2205-8

Abstract: Droplet impacting on the stainless steel wire mesh is very common in chemical devices, like a rotatingSurface wettability of wire mesh significantly affects the liquid flow pattern and liquid dispersionThe dynamic behavior of liquid film on the surface of wire mesh can be divided into the following threeCompared to the hydrophilic wire mesh, the final wetting area of hydrophobic wire mesh is zero in mostof hydrophobic wire mesh is 41.76–237.37 μm.

Keywords： stainless steel wire mesh     computational fluid dynamics     surface wettability     liquid film     impacting    

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Fabrication of a superhydrophilic/underwater superoleophobic stainless steel mesh for oil/water separation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1,   Pages 46-55 doi: 10.1007/s11705-022-2170-2

Abstract: , a superhydrophilic/underwater superoleophobic N-isopropylacrylamide-coated stainless steel meshThe obtained mesh was able to separate oil/water mixtures only by gravity.In addition, the mesh showed high-efficiency separation ability (99.2%) and ultrahigh flux (235239 L∙Importantly, due to the complex cross-linked bilayer structure, the prepared mesh exhibited good recycling

Keywords： oil/water separation     N-isopropylacrylamide     stainless steel mesh     ultrahigh flux    

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The μ Robust Control Design for Mobile Satellite Antennas

Li Guo,Hu Jianfei,Ji Xianzheng

Strategic Study of CAE 2007, Volume 9, Issue 5,   Pages 22-26

Abstract: investigates the use of the μ robust controller for improving control performance of mobile satellite antennasA robust control system of mobile satellite antennas is presented,  and the μ robust controlleris designed according to the mobile satellite antennas systems model. It is clarified that the control performance of mobile satellite antennas is improved and the control

Keywords： mobile satellite antennas     theμdesign     robust control    

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Reliability mesh convergence analysis by introducing expanded control variates

Alireza GHAVIDEL, Mohsen RASHKI, Hamed GHOHANI ARAB, Mehdi AZHDARY MOGHADDAM

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4,   Pages 1012-1023 doi: 10.1007/s11709-020-0631-6

Abstract: ACVAT uses the results of a finite element method (FEM) model with coarse mesh density as the controlvariates of the model with fine mesh and efficiently solves FEM-based reliability problems.ACVAT however does not provide any results about the reliability-based mesh convergence of the problemMesh-refinement analysis allows checking whether the numerical solution is sufficiently accurate, evenThe results confirm that the proposed approach not only handles the mesh refinement progress with the

Keywords： finite element     reliability mesh convergence analysis     expanded control variates    

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A novel composite coating mesh film for oil-water separation

Futao QIN, Zhijia YU, Xinhui FANG, Xinghua LIU, Xiangyu SUN

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 112-118 doi: 10.1007/s11705-009-0149-x

Abstract: Polytetrafluoroethylene-polyphenylene sulfide composite coating mesh film was successfully prepared bya simple layered transitional spray-plasticizing method on a stainless steel mesh.The contact angle of this mesh film is 156.3° for water, and close to 0° for diesel oil and kerosene.The contact angle hysteresis of water on the mesh film is 4.3°.

Keywords： super-hydrophobic     super-oleophilic     composite coating     mesh film     separation of oil and water    

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buoyant-thermocapillary flow along with rising liquid film on the surface of a horizontal metallic mesh

Manuel J. GOMES, Ning MEI

Frontiers in Energy 2020, Volume 14, Issue 1,   Pages 114-126 doi: 10.1007/s11708-017-0483-5

Abstract: considered in the analysis of the influences of the initial level of immersion of a horizontal metallic meshcombined flow occurs along with the rising liquid film flow on the surface of a horizontal metallic meshThree different levels of immersion of the metallic mesh tube in the liquid have been tested.heating metallic tube with a diameter of 25 mm and a length of 110 mm, sealed outside with a metallic mesh

Keywords： rising liquid film     combined flow     thermo-capillary flow     buoyant flow     metallic mesh tube     horizontal tube    

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Wide-Angle Scanning Antennas for Millimeter-Wave 5G Applications Article

Raj Mittra, Abdelkhalek Nasri, Ravi Kumar Arya

Engineering 2022, Volume 11, Issue 4,   Pages 60-73 doi: 10.1016/j.eng.2021.10.017

Abstract: using a reconfigurable metasurface type of panels.Graphical abstractA number of designs for scanning antennas

Keywords： Luneburg lens     Scanning arrays     Millimeter-wave antennas     Switchable phase shifters     Reconfigurable metasurfaces    

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Advanced Antennas Push Forward Wireless Connectivity

Kwai Man Luk, Baoyan Duan

Engineering 2022, Volume 11, Issue 4,   Pages 1-2 doi: 10.1016/j.eng.2022.03.003

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Micro － blind mesh thermal control study and simulation of nano-satellite

Yang Juan,Li Yunze,Wang Jun

Strategic Study of CAE 2008, Volume 10, Issue 7,   Pages 169-172

Abstract: Micro-blind mesh can resolve this problem properly.The intelligent control strategy of micro-blind mesh' s drive is the key technology.

Keywords： nano-satellite     micro-blind mesh     fuzzy PI controller     simulation    

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Research on the method of cavitations resistance in a piezoelectric pump with 3-dimensional mesh structure

ZHANG Jian-hui, Bai Heng-jun, XIA Qi-xiao, NING Hong-gang, ONUKI Akiyoshi

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4,   Pages 429-433 doi: 10.1007/s11465-006-0052-9

Abstract: As a solution to this disadvantage, the CR3DMS (cavitations resistance with 3-dimensional mesh structure

Keywords： different     3-dimensional     occurrence     effective     Resistant-Layers    

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Dynamic modeling of hydrostatic guideway considering compressibility and inertia effect

Yikang DU,Kuanmin MAO,Yaming ZHU,Fengyun WANG,Xiaobo MAO,Bin LI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 78-88 doi: 10.1007/s11465-015-0331-4

Abstract:

Hydrostatic guideways are used as an alternative to contact bearings due to high stiffness and high damping in heavy machine tools. To improve the dynamic characteristic of bearing structure, the dynamic modeling of the hydrostatic guidway should be accurately known. This paper presents a “mass-spring-Maxwell” model considering the effects of inertia, squeeze, compressibility and static bearing. To determine the dynamic model coefficients, numerical simulation of different cases between displacement and dynamic force of oil film are performed with fluent code. Simulation results show that hydrostatic guidway can be taken as a linear system when it is subjected to a small oscillation amplitude. Based on a dynamic model and numerical simulation, every dynamic model’s parameters are calculated by the Levenberg-Marquardt algorithm. Identification results show that “mass-spring-damper” model is the most appropriate dynamic model of the hydrostatic guidway. This paper provides a reference and preparation for the analysis of the dynamic model of the similar hydrostatic bearings.

Keywords： hydrostatic guidway     dynamic model     dynamic mesh technique     Levenberg-Marquardt     mass-spring-damper model    

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Title Author Date Type Operation

Diversity Glass Antennas for Tri-Band WiFi Applications

Peng Fei Hu, Kwok Wa Leung, Kwai Man Luk, Yong Mei Pan, Shao Yong Zheng

Journal Article

IEEE 802.16 Mesh Network SA Management Mechanism Based on Multi-hops Mutual Authentication

Wang Xingjian,Hu Aiqun,Huang Yuhua

Journal Article

Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear

Journal Article

Recent Advances in Space-Deployable Structures in China

Xiaofei Ma, Tuanjie Li, Jingya Ma, Zhiyi Wang, Chuang Shi, Shikun Zheng, Qifeng Cui, Xiao Li, Fan Liu, Hongwei Guo, Liwu Liu, Zuowei Wang, Yang Li

Journal Article

Numerical studies of dynamic behavior of liquid film on single-layer wire mesh with different wettabilities

Journal Article

Fabrication of a superhydrophilic/underwater superoleophobic stainless steel mesh for oil/water separation

Journal Article

The μ Robust Control Design for Mobile Satellite Antennas

Li Guo,Hu Jianfei,Ji Xianzheng

Journal Article

Reliability mesh convergence analysis by introducing expanded control variates

Alireza GHAVIDEL, Mohsen RASHKI, Hamed GHOHANI ARAB, Mehdi AZHDARY MOGHADDAM

Journal Article

A novel composite coating mesh film for oil-water separation

Futao QIN, Zhijia YU, Xinhui FANG, Xinghua LIU, Xiangyu SUN

Journal Article

buoyant-thermocapillary flow along with rising liquid film on the surface of a horizontal metallic mesh

Manuel J. GOMES, Ning MEI

Journal Article

Wide-Angle Scanning Antennas for Millimeter-Wave 5G Applications

Raj Mittra, Abdelkhalek Nasri, Ravi Kumar Arya

Journal Article

Advanced Antennas Push Forward Wireless Connectivity

Kwai Man Luk, Baoyan Duan

Journal Article

Micro － blind mesh thermal control study and simulation of nano-satellite

Yang Juan,Li Yunze,Wang Jun

Journal Article

Research on the method of cavitations resistance in a piezoelectric pump with 3-dimensional mesh structure

ZHANG Jian-hui, Bai Heng-jun, XIA Qi-xiao, NING Hong-gang, ONUKI Akiyoshi

Journal Article

Dynamic modeling of hydrostatic guideway considering compressibility and inertia effect

Yikang DU,Kuanmin MAO,Yaming ZHU,Fengyun WANG,Xiaobo MAO,Bin LI

Journal Article