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A virtual reality system for arm and hand rehabilitation

Zhiqiang LUO, Chee Kian LIM, I-Ming CHEN, Song Huat YEO

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1,   Pages 23-32 doi: 10.1007/s11465-011-0202-6

Abstract: two motion track components, the Arm Suit and the Smart Glove which are composed of a range of the opticallinear encoders (OLE) and the inertial measurement units (IMU), and two interactive practice applications

Keywords： motion tracking     rehabilitation     optical linear encoder (OLE)     virtual reality    

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Optical performance analysis of an innovative linear focus secondary trough solar concentrating system

Xiliang ZHANG, Zhiying CUI, Jianhan ZHANG, Fengwu BAI, Zhifeng WANG

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 590-596 doi: 10.1007/s11708-018-0602-y

Abstract: To overcome those inherent disadvantages, in this paper, an innovative concept of linear focus secondaryBesides, the optical performance of the semi and the whole secondary solar trough concentrator was evaluated

Keywords： secondary parabolic trough solar concentrator     ray tracing method     linear focus     concentration ratio     optical    

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Displacement measuring grating interferometer: a review Special Feature on Precision Measurement and Inst

Peng-cheng HU, Di CHANG, Jiu-bin TAN, Rui-tao YANG, Hong-xing YANG, Hai-jin FU

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 5,   Pages 631-654 doi: 10.1631/FITEE.1800708

Abstract:

A grating interferometer, called the “optical encoder,” is a commonly used tool for precise displacementClassified based on the measuring principle and optical configuration, a grating interferometer experiencesMeanwhile, numerous structures of grating interferometers with a high optical fold factor, a large measurement

Keywords： Grating interferometer     Optical encoder     Displacement measurement     Precision measurement    

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Design of the Optical System with Large Relative Aperture and Large Linear Field of View

Pan Junye

Strategic Study of CAE 2000, Volume 2, Issue 8,   Pages 89-90

Abstract:

In this paper following discussion the author concluded that the optical system for IR detecting inA system with diameter φ600 mm, f=1000 mm, and linear field of view ± 5° was designed.

Keywords： IR detecting     relative aperture     large field of view     off-axis system     aspheric surface    

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Exploiting Additive Manufacturing Infill in Topology Optimization for Improved Buckling Load Artical

Anders Clausen, Niels Aage, Ole Sigmund

Engineering 2016, Volume 2, Issue 2,   Pages 250-257 doi: 10.1016/J.ENG.2016.02.006

Abstract:

Additive manufacturing (AM) permits the fabrication of functionally optimized components with high geometrical complexity. The opportunity of using porous infill as an integrated part of the manufacturing process is an example of a unique AM feature. Automated design methods are still incapable of fully exploiting this design freedom. In this work, we show how the so-called coating approach to topology optimization provides a means for designing infill-based components that possess a strongly improved buckling load and, as a result, improved structural stability. The suggested approach thereby addresses an important inadequacy of the standard minimum compliance topology optimization approach, in which buckling is rarely accounted for; rather, a satisfactory buckling load is usually assured through a post-processing step that may lead to sub-optimal components. The present work compares the standard and coating approaches to topology optimization for the MBB beam benchmark case. The optimized structures are additively manufactured using a filamentary technique. This experimental study validates the numerical model used in the coating approach. Depending on the properties of the infill material, the buckling load may be more than four times higher than that of solid structures optimized under the same conditions.

Keywords： Additive manufacturing     Infill     Topology optimization     Buckling    

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Modulation of Gut Microbiota in Pathological States

Yulan Wang, Baohong Wang, Junfang Wu, Xiangyang Jiang, Huiru Tang, Ole H. Nielsen

Engineering 2017, Volume 3, Issue 1,   Pages 83-89 doi: 10.1016/J.ENG.2017.01.013

Abstract:

The human microbiota is an aggregate of microorganisms residing in the human body, mostly in the gastrointestinal tract (GIT). Our gut microbiota evolves with us and plays a pivotal role in human health and disease. In recent years, the microbiota has gained increasing attention due to its impact on host metabolism, physiology, and immune system development, but also because the perturbation of the microbiota may result in a number of diseases. The gut microbiota may be linked to malignancies such as gastric cancer and colorectal cancer. It may also be linked to disorders such as nonalcoholic fatty liver disease (NAFLD); obesity and diabetes, which are characterized as “lifestyle diseases” of the industrialized world; coronary heart disease; and neurological disorders. Although the revolution in molecular technologies has provided us with the necessary tools to study the gut microbiota more accurately, we need to elucidate the relationships between the gut microbiota and several human pathologies more precisely, as understanding the impact that the microbiota plays in various diseases is fundamental for the development of novel therapeutic strategies. Therefore, the aim of this review is to provide the reader with an updated overview of the importance of the gut microbiota for human health and the potential to manipulate gut microbial composition for purposes such as the treatment of antibiotic-resistant Clostridium difficile (C. difficile) infections. The concept of altering the gut community by microbial intervention in an effort to improve health is currently in its infancy. However, the therapeutic implications appear to be very great. Thus, the removal of harmful organisms and the enrichment of beneficial microbes may protect our health, and such efforts will pave the way for the development of more rational treatment options in the future.

Keywords： Gut microbes     Diseases     Microbial modulation    

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Long Undersea Tunnels: Recognizing and Overcoming the Logistics of Operation and Construction Article

Gareth Mainwaring, Tor Ole Olsen

Engineering 2018, Volume 4, Issue 2,   Pages 249-253 doi: 10.1016/j.eng.2018.03.004

Abstract:

Long undersea tunnels, and particularly those that are built for transportation purposes, are not commonplace infrastructure. Although their planning and construction take a considerable amount of time, they form important fixed links once in operation. The fact that these tunnels are located under the sea generally involves unique challenges including complex issues with construction and operations, which relate to the lack of intermediate access points along the final route of the tunnel. Similar issues are associated with long under-land tunnels, such as those under mountain ranges such as the Alps. This paper identifies the key issues related to the design and construction of such tunnels, and suggests a potential solution using proven technology from another engineering discipline.

Keywords： Channel Tunnel     Fixed link     Fire and life safety     Shafts     Gravity structures    

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Hybrid embedding and joint training of stacked encoder for opinion question machine reading comprehension

Xiang-zhou Huang, Si-liang Tang, Yin Zhang, Bao-gang Wei,huangxiangzhou@zju.edu.cn,siliang@zju.edu.cn,yinzh@zju.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 9,   Pages 1267-1412 doi: 10.1631/FITEE.1900571

Abstract: Opinion question (MRC) requires a machine to answer questions by analyzing corresponding passages. Compared with traditional MRC tasks where the answer to every question is a segment of text in corresponding passages, opinion question MRC is more challenging because the answer to an opinion question may not appear in corresponding passages but needs to be deduced from multiple sentences. In this study, a novel framework based on is proposed to address such problems, in which a new hybrid embedding training method combining text features is used. Furthermore, extra attention and output layers which generate auxiliary losses are introduced to jointly train the stacked recurrent . To deal with imbalance of the dataset, irrelevancy of question and passage is used for . Experimental results show that the proposed method achieves state-of-the-art performance. We are the biweekly champion in the opinion question MRC task in Artificial Intelligence Challenger 2018 (AIC2018).
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Development of surface reconstruction algorithms for optical interferometric measurement

Dongxu WU, Fengzhou FANG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 1-31 doi: 10.1007/s11465-020-0602-6

Abstract: Optical interferometry is a powerful tool for measuring and characterizing areal surface topography inA variety of instruments based on optical interferometry have been developed to meet the measurementThis paper provides an in-depth perspective of surface topography reconstruction for optical interferometricPrinciples, configurations, and applications of typical optical interferometers with different capabilitiesThis paper also presents the new challenges that optical interferometry techniques are facing in surface

Keywords： surface topography     measurement     optical interferometry     coherence envelope     phase-shifting algorithm    

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Design and analysis of linear oscillating motor for linear pump application-magnetic field, dynamics

Zongxia JIAO,Tianyi WANG,Liang YAN

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 351-362 doi: 10.1007/s11465-016-0407-9

Abstract:

A linear oscillating motor is an electromagnetic actuator that can achieve short-stroke reciprocatingIt has been widely used in linear pump applications as the source of power and motion.However, because of the demand of high power density in a linear actuation system, the performance oflinear oscillating motors has been the focus of studies and deserves further research for high powerlinear pump applications.

Keywords： linear oscillating motor     linear pump     magnetic field     motor optimization    

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Precision glass molding: Toward an optimal fabrication of optical lenses

Liangchi ZHANG,Weidong LIU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 3-17 doi: 10.1007/s11465-017-0408-3

Abstract: and time consuming to use machining processes, such as grinding, polishing and lapping, to produce opticalPrecision glass molding (PGM) has thus been developed to realize an efficient manufacture of such opticalFor example, a PGM process must be carried out within the super-cooled region of optical glass abovemanufacturing chain consideration from mold material selection, property and deformation characterization of optical

Keywords： precision glass molding     optical lens     constitutive modeling     optimization     manufacturing chain     Industry    

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Comparison between linear and non-linear forms of pseudo-first-order and pseudo-second-order adsorption

Junxiong LIN , Lan WANG ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 320-324 doi: 10.1007/s11783-009-0030-7

Abstract: The best-fit equations of linear and non-linear forms of the two widely used kinetic models, namely pseudo-first-orderThe results show that the non-linear forms of pseudo-first-order and pseudo-second-order models weremore suitable than the linear forms for fitting the experimental data.The experimental kinetics may have been distorted by linearization of the linear kinetic equations, andthus, the non-linear forms of kinetic equations should be primarily used to obtain the adsorption parameters

Keywords： adsorption     pseudo-first order     pseudo-second order     kinetic model     linear method     non-linear method    

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The Latest Development of Optical Fiber, Optical Fiber Band and Optical Cable Technology Abroad

Liu Liangyan

Strategic Study of CAE 2001, Volume 3, Issue 9,   Pages 86-94

Abstract:

In this paper, new development about the study of dispersion-compensable low transmission loss opticalfiber, nonzero dispersion displacement optical fiber, and carbon-coated or silicon nitride-coated opticalThen the manufacture technology of band optical fiber including its structure, coatings, properties andMulti-core optical fiber band cable manufacture technology such as twisted loose-tube, center loose-tube, frame, dry core band optical cable was also discussed.

Keywords： optical communication     low transmission loss optical fiber     optical fiber band     band optical fiber cable    

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Optical Problems in Imaging Optical Engineering

Pan Junhua

Strategic Study of CAE 2000, Volume 2, Issue 3,   Pages 32-35

Abstract: According to the trend of technical progress, it is unavoidable to use reflective optical systems, andFor optical system design, the main problem is how to construct an effective reflecting system whichmay be optimized by the optical CAD.

Keywords： imaging optics     aspheric mirror     optical design     optical fabrication and testing    

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Effects of critical geometric parameters on the optical performance of a conical cavity receiver

Hu XIAO, Yanping ZHANG, Cong YOU, Chongzhe ZOU, Quentin FALCOZ

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 673-683 doi: 10.1007/s11708-019-0630-2

Abstract: The optical performance of a receiver has a great influence on the efficiency and stability of a solarMost of the literature focuses on the optical performance of receivers with different geometric shapesThese factors affect the optical efficiency, the maximum heat flux density, and the light distributionThe increase in the number of loops contributed to an increase in the optical efficiency and a uniformThe conical cavity receiver had an optimal optical performance when the focal point of the collector

Keywords： parabolic collector     conical cavity receiver     critical geometric parameters     optical performance    

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Title Author Date Type Operation

A virtual reality system for arm and hand rehabilitation

Zhiqiang LUO, Chee Kian LIM, I-Ming CHEN, Song Huat YEO

Journal Article

Optical performance analysis of an innovative linear focus secondary trough solar concentrating system

Xiliang ZHANG, Zhiying CUI, Jianhan ZHANG, Fengwu BAI, Zhifeng WANG

Journal Article

Displacement measuring grating interferometer: a review

Peng-cheng HU, Di CHANG, Jiu-bin TAN, Rui-tao YANG, Hong-xing YANG, Hai-jin FU

Journal Article

Design of the Optical System with Large Relative Aperture and Large Linear Field of View

Pan Junye

Journal Article

Exploiting Additive Manufacturing Infill in Topology Optimization for Improved Buckling Load

Anders Clausen, Niels Aage, Ole Sigmund

Journal Article

Modulation of Gut Microbiota in Pathological States

Yulan Wang, Baohong Wang, Junfang Wu, Xiangyang Jiang, Huiru Tang, Ole H. Nielsen

Journal Article

Long Undersea Tunnels: Recognizing and Overcoming the Logistics of Operation and Construction

Gareth Mainwaring, Tor Ole Olsen

Journal Article

Hybrid embedding and joint training of stacked encoder for opinion question machine reading comprehension

Xiang-zhou Huang, Si-liang Tang, Yin Zhang, Bao-gang Wei,huangxiangzhou@zju.edu.cn,siliang@zju.edu.cn,yinzh@zju.edu.cn

Journal Article

Development of surface reconstruction algorithms for optical interferometric measurement

Dongxu WU, Fengzhou FANG

Journal Article

Design and analysis of linear oscillating motor for linear pump application-magnetic field, dynamics

Zongxia JIAO,Tianyi WANG,Liang YAN

Journal Article

Precision glass molding: Toward an optimal fabrication of optical lenses

Liangchi ZHANG,Weidong LIU

Journal Article

Comparison between linear and non-linear forms of pseudo-first-order and pseudo-second-order adsorption

Junxiong LIN , Lan WANG ,

Journal Article

The Latest Development of Optical Fiber, Optical Fiber Band and Optical Cable Technology Abroad

Liu Liangyan

Journal Article

Optical Problems in Imaging Optical Engineering

Pan Junhua

Journal Article

Effects of critical geometric parameters on the optical performance of a conical cavity receiver

Hu XIAO, Yanping ZHANG, Cong YOU, Chongzhe ZOU, Quentin FALCOZ

Journal Article