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Anon-stationary channelmodel for 5Gmassive MIMOsystems Article

Jian-qiao CHEN, Zhi ZHANG, Tian TANG, Yu-zhen HUANG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 12, Pages 2101-2110 doi: 10.1631/FITEE.1700028

Abstract: channel model for massive multiple-input multiple-out (MIMO) communication systems that incorporate the sphericalwave-front assumption and non-stationary properties of clusters on both the array and time axes.Because of the large dimension of the antenna array in massive MIMO systems, the spherical wave-frontThe impacts of cluster evolution and the spherical wave-front assumption on the statistical properties

Keywords： Massive MIMO Spherical wave-front assumption Non-stationary property Birth-death process Visibility

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A review on front end conversion in ocean wave energy converters

Nagulan SANTHOSH,Venkatesan BASKARAN,Arunachalam AMARKARTHIK

Frontiers in Energy 2015, Volume 9, Issue 3, Pages 297-310 doi: 10.1007/s11708-015-0370-x

Abstract: Effective utilization and sustainability of any wave energy harvester depend upon its adaptability inIn this paper, the front end energy conversions are reviewed in detail which is positioned in the firststage of the wave energy converter among other stages such as power take off (PTO) and electrical energyIf the recent development of these front end energy conversion is well known then developing wave energyThe aim of this review is to provide information on front end energy conversion of a point absorber and

Keywords： wave energy converter point absorbers power take off (PTO) front end energy conversion

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Dynamical research on spherical micro actuator with piezoelectric ceramic stacks drivers

ZHANG Ruihua, CHEN Haichu

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4, Pages 433-438 doi: 10.1007/s11465-007-0074-y

Abstract: This paper develops a 30 mm × 30 mm × 50 mm spherical micro actuator driven by piezoelectric ceramicFirst, the space coordinate relationship of the spherical micro actuator and a dynamic model are setwith a micro-gripper based on the sample spherical micro actuator, and the experimental research onFinally, the characteristics of the spherical micro actuator influenced by the mass of the metal sphereThe experimental results validate the back rotation vibration model of the spherical micro actuator.

Keywords： spherical micro-gripper friction coefficient dynamic frequency

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Development of a redundant anthropomorphic hydraulically actuated manipulator with a roll–pitch–yaw spherical

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4, Pages 698-710 doi: 10.1007/s11465-021-0646-2

Abstract: seven-degree-of-freedom (7-DOF) redundant anthropomorphic hydraulically actuated manipulator with a novel roll–pitch–yaw sphericalA hybrid series–parallel mechanism is presented to achieve the spherical wrist design, which consistsDesigned as a 1R PRRR-1S PU mechanism (“R”, “P”, “S”, and “U” denote revolute, prismatic, spherical,The 7-DOF manipulator is then designed, and its third joint axis goes through the spherical center to

Keywords： hydraulic manipulator inverse kinematic redundant design spherical wrist

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On the location of the secondary instantaneous poles in two-degree-of-freedom spherical mechanisms

Soheil ZARKANDI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1, Pages 34-40 doi: 10.1007/s11465-014-0290-1

Abstract: mechanisms, the instantaneous poles (or instant poles, in brief) can be used for kinematic analysis in sphericalshowing analytically that the locus of an unknown secondary instant pole in two-degree-of-freedom (2-DOF) spherical

Keywords： spherical mechanisms instantaneous poles great circle angular velocity

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Synthesis and electrocatalytic property of cubic and spherical nanoparticles of cobalt platinum alloys

Xiaowei TENG, Hong YANG,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1, Pages 45-51 doi: 10.1007/s11705-009-0308-0

Abstract: Both cubic and spherical CoPt nanoparticles were made using cobalt carbonyl and platinum 2,4-pentanedionate

Keywords： spherical 2 4-pentanedionate adamantanecarboxylic acetylacetonate electrocatalytic

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A survey of instantaneous poles for a class of two-degree-of-freedom spherical mechanisms

Soheil ZARKANDI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 4, Pages 344-353 doi: 10.1007/s11465-014-0320-z

Abstract: paper is a detailed exploration of instantaneous poles for a class of two-degree-of-freedom (two-DOF) spherical

Keywords： spherical mechanisms instantaneous poles Aronhold-Kennedy theorem great circles pencil of meridian

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Singularity loci of an orthogonal spherical two-degree-of-freedom parallel mechanism

Jialun YANG, Feng GAO,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4, Pages 379-385 doi: 10.1007/s11465-009-0075-0

Abstract: In this paper, the direct and inverse kinematics of an orthogonal spherical two-degree-of-freedom parallelSelf-motions, which are different from the general spherical 5 parallel mechanisms, are also discussed

Keywords： 2-DOF orthogonal spherical parallel mechanism singularity loci self-motions

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Shape optimization of aluminium alloy spherical reticulated shells considering nonlinearities

Wei LIU; Lishu XU; Shaojun ZHU; Lijuan LI; Feng LIU; Zhe XIONG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12, Pages 1565-1580 doi: 10.1007/s11709-022-0867-4

Abstract: This study proposes a shape optimization method for K6 aluminum alloy spherical reticulated shells withpractical design tables containing the parameters of the optimized shape are obtained for aluminum alloy spherical

Keywords： shape optimization aluminum alloy spherical reticulated shell non-linear buckling material nonlinearity

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Atomic force microscopy study on the microtopography of natural organic matter and newly formed hydrous MnO2

GUO Jin, MA Jun, SHI Xuehua

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2, Pages 251-256 doi: 10.1007/s11783-007-0043-z

Abstract: hydrous manganese dioxide possess a perforated sheet (with a thickness of 0 1.75 nm) as well as some sphericalloosely dispersed pancake shape (with adsorption height of 5 8.5 nm) to a densely dispersed and uniform spherical

Keywords： spherical microtopography potassium permanganate uniform spherical morphology

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Synthesis of spherical parallel manipulator for dexterous medical task

Abdelbadia CHAKER, Abdelfattah MLIKA, Med Amine LARIBI, Lotfi ROMDHANE, Sa?d ZEGHLOUL

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2, Pages 150-162 doi: 10.1007/s11465-012-0325-4

Abstract:

This paper deals with the design and the analysis of a spherical parallel manipulator (SPM) for a

Keywords： spherical parallel manipulator (SPM) anastomosis haptic motion capture optimization workspace dexterity

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Elastic analysis of heterogeneous thick-walled spherical pressure vessels with parabolic varying properties

Keyhan KARAMI, Majid ABEDI, Mohammad ZAMANI NEJAD, Mohammad Hassan LOTFIAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4, Pages 433-438 doi: 10.1007/s11465-012-0336-1

Abstract: the basis of plane elasticity theory (PET), the displacement and stress components in a thick-walled spherical

Keywords： thick-walled spherical vessels heterogeneous materials FGM FEM parabolic varying properties

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Buffer capacity of granular matter to impact of spherical projectile based on discrete element method

Ying YAN, Pengfei LI, Shunying JI

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1, Pages 50-54 doi: 10.1007/s11709-013-0186-x

Abstract: capacity of granular matter, the discrete element method (DEM) is adopted to simulate the impact of a spherical

Keywords： granular matter impact peak buffer capacity discrete element method critical thickness

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Flow behavior of non-spherical particle flowing in hopper

He TAO,Wenqi ZHONG,Baosheng JIN

Frontiers in Energy 2014, Volume 8, Issue 3, Pages 315-321 doi: 10.1007/s11708-014-0331-9

Abstract: The results show that the mass flow rate of ellipsoidal particles is smaller than that of spherical particlesThe velocity of spherical particle is larger than that of ellipsoidal.

Keywords： discrete element method ellipsoidal particle flow behavior hopper

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Orderly decorated nanostructural photoelectrodes with uniform spherical TiO

A. M. Bakhshayesh,S. S. Azadfar

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 4, Pages 532-540 doi: 10.1007/s11705-015-1549-8

Abstract: This study presents a novel nanostructural electrode made of 20-nm-diameter nanoparticles, which orderly decorated with 2-µm TiO particles, deposited by a new gel process. The decorated electrode (DE) is better than the non-decorated electrode (NE) in both light scattering and light harvesting, as confirmed by diffuse reflectance spectroscopy. X-ray diffraction reveals that both electrodes have a mixture of anatase and rutile phases. The dye-sensitized solar cell based on the decorated electrode shows the highest power conversion efficiency of 7.80% as a result of less recombination demonstrated by electrochemical impedance spectroscopy. From internal power conversion efficiency measurement, the external quantum efficiency of DE cell at 530 nm is 89%, which is higher than that of NE cell (77%).

Keywords： dye-sensitized solar cell uniform particles TiO₂ gel process light harvesting

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Title Author Date Type Operation

Anon-stationary channelmodel for 5Gmassive MIMOsystems

Jian-qiao CHEN, Zhi ZHANG, Tian TANG, Yu-zhen HUANG

Journal Article

A review on front end conversion in ocean wave energy converters

Nagulan SANTHOSH,Venkatesan BASKARAN,Arunachalam AMARKARTHIK

Journal Article

Dynamical research on spherical micro actuator with piezoelectric ceramic stacks drivers

ZHANG Ruihua, CHEN Haichu

Journal Article

Development of a redundant anthropomorphic hydraulically actuated manipulator with a roll–pitch–yaw spherical

Journal Article

On the location of the secondary instantaneous poles in two-degree-of-freedom spherical mechanisms

Soheil ZARKANDI

Journal Article

Synthesis and electrocatalytic property of cubic and spherical nanoparticles of cobalt platinum alloys

Xiaowei TENG, Hong YANG,

Journal Article

A survey of instantaneous poles for a class of two-degree-of-freedom spherical mechanisms

Soheil ZARKANDI

Journal Article

Singularity loci of an orthogonal spherical two-degree-of-freedom parallel mechanism

Jialun YANG, Feng GAO,

Journal Article

Shape optimization of aluminium alloy spherical reticulated shells considering nonlinearities

Wei LIU; Lishu XU; Shaojun ZHU; Lijuan LI; Feng LIU; Zhe XIONG

Journal Article

Atomic force microscopy study on the microtopography of natural organic matter and newly formed hydrous MnO2

GUO Jin, MA Jun, SHI Xuehua

Journal Article

Synthesis of spherical parallel manipulator for dexterous medical task

Abdelbadia CHAKER, Abdelfattah MLIKA, Med Amine LARIBI, Lotfi ROMDHANE, Sa?d ZEGHLOUL

Journal Article

Elastic analysis of heterogeneous thick-walled spherical pressure vessels with parabolic varying properties

Keyhan KARAMI, Majid ABEDI, Mohammad ZAMANI NEJAD, Mohammad Hassan LOTFIAN

Journal Article

Buffer capacity of granular matter to impact of spherical projectile based on discrete element method

Ying YAN, Pengfei LI, Shunying JI

Journal Article

Flow behavior of non-spherical particle flowing in hopper

He TAO,Wenqi ZHONG,Baosheng JIN

Journal Article

Orderly decorated nanostructural photoelectrodes with uniform spherical TiO

A. M. Bakhshayesh,S. S. Azadfar

Journal Article

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