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2006北京国际耳科论坛

作者： Robert V．Shannon Head Auditory Implants and Perception Dept． House Ear Institute Los Angeles Adjunct Professor of Biomedical Engineering USC President-Elect Association for Research in Otolaryngology PhD

Electrical stimulation of the auditory system has produced remarkable levels of functional hearing in tens of thousands of deaf people. Multi-channel cochlear implants (CIs) provide electrical stimulation of the prima... 详细信息

关键词： Restoration of hearing by electrical stimulation of the human cochlea auditory brainstem and midbrain

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Identification and Prevention of Glaucoma Through Digital Processing of biomedical Imaging by the Relationship Between Volume of Nerve Fibers and Intraocular Pressure

Identification and Prevention of Glaucoma Through Digital Pr...

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AHFE Virtual Conference on Human Factors and Ergonomics in Healthcare and Medical Devices, and the International Conference on Human Factors in Aging and Special Needs, 2020

作者： Pinos-Vélez, Eduardo Chazi, Marlon Cajamarca, Christian Robles-Bykbaev, Vladimir Chacón, Carlos Luis Ipanaqué, William Serpa-Andrade, Luis GIIATA Research Group on Artificial Intelligence and Assistive Technologies and GIIB Research Group on Biomedical Engineering Universidad Politécnica Salesiana Cuenca Ecuador GIIATA Research Group on Artificial Intelligence and Assistive Technologies Universidad Politécnica Salesiana Cuenca Ecuador Ecuadorian Society of Glaucoma Clinical Santa Lucía Quito Ecuador PhD of Engineering Computer Science and Control DICOP Universidad de Piura Piura Peru

ISBN: (纸本)9783030508371

Glaucoma is the second leading cause of blindness worldwide and the first in an irreversible way, many of the studies and investigations are concentrated in methods of control and treatment, however, there are few studies carried out in the areas of prevention and early detection of glaucoma, so, in this research presents the effect of increased intraocular pressure in the optic nerve, especially in damage caused in the layer of nerve fibers and their impact with the visual field, To do this, you work with background images of human eye, obtained from the Clinic "Santa Lucia", digital image processing to characterize parameters that determine a presumptive diagnosis of glaucoma suspect, the results are presented to specialists for a medical diagnosis. © 2020, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Optical tomography

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Proposal for a Tool for the Calculation of Toric Intraocular Lens Using Multivariate Regression 1st

Proposal for a Tool for the Calculation of Toric Intraocular...

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1st International Conference on Advances in Emerging Trends and Technologies, ICAETT 2019

作者： Castillo-Cabrera, Johanna Pucha-Ortiz, Nataly Pinos-Velez, Eduardo Ipanque, William Chacón, Carlos Luis GIIATA Research Group on Artificial Intelligence and Assistive Technologies Universidad Politécnica Salesiana Cuenca Ecuador GIIATA Research Group on Artificial Intelligence and Assistive Technologies and GIIB Research Group on Biomedical Engineering at Universidad Politécnica Salesiana Cuenca Ecuador PhD of Engineering Computer Science and Control Universidad de Piura Piura Peru Board Member of the EcuadoRian Society of Glaucoma Clinical Santa Lucía Quito Ecuador

ISBN: (纸本)9783030320218

A common cause of loss of vision for humans is lens opacity, or cat aracts, which prevent patients from having a full field of vision and lower their visual acuities. Cataracts can be corrected for by replacing the opaque lens with a toric intraocular lens. The calculation for the placement of the toric lens is exceedingly important for the patient´s recovery of vision. Some houses, take date form medical equipment and perform the calculation, but more depends on the experience of the treating physician to ensure the desired effectiveness and efficiency, For this reason, in this investigation, the proposal is presented to perform the calculation, in addition, the approach to simulation of the placement of the lens inside the eye, especially in its axial length and depth in the anterior chamber, determinants for short, medium and long distance with an automatic focus and appropriate, in like manner, the results are exposed to the specialists of the clinic "Santa Lucia" in the city of Quito. © 2020, Springer Nature Switzerland AG.

关键词： Intraocular lenses

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Predicting Daily Gait Behaviors after Anterior Cruciate Ligament Surgery: A Case Study

Predicting Daily Gait Behaviors after Anterior Cruciate Liga...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society

作者： Eric Wade Paige Lin Sadra Hemmati Susan Sigward Faculty of Mechanical Aerospace and Biomedical Engineering University of Tennessee Knoxville TN USA a PhD student in Division of Biokinesiology and Physical Therapy University of Southern California Los Angeles CA USA a PhD student in Mechanical Aerospace and Biomedical Engineering University of Tennessee Knoxville TN USA Faculty of Physical Therapy Division of Biokinesiology and Physical Therapy University of Southern California Los Angeles CA USA

ISBN: (纸本)9781424492695

After surgical interventions such as anterior cruciate ligament reconstruction (ACLr), people exhibit altered gait mechanics due to joint impairments. Persistence of altered mechanics after resolution of impairments may be related to daily reinforcement of maladaptive behavior. Quantifying the contribution of such maladaptive motor strategies requires continuous monitoring of locomotor behaviors in the home setting. In this paper, we investigate an inertial sensor based approach to monitoring ambient activities. We evaluate the relative performance of our predictive algorithm on one control and one individual post-ACL reconstruction.

关键词： post-ACL reconstruction ACLr contribution of such maladaptive maladaptive behavior physical impairment Locomotion Gait Continuous monitoring anterior cruciate ligament reconstruction Case studies Anterior Cruciate Ligament mechanic Mechanics Surgery inertia sensor Resolving power

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Proposal for a Support Tool for the Study of Corneal Biomechanics and Its Influence in the Human Eye 1st

Proposal for a Support Tool for the Study of Corneal Biomech...

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1st International Conference on Advances in Emerging Trends and Technologies, ICAETT 2019

作者： Cordero, María Isabel Coronel, Roberto Pinos-Vélez, Eduardo Ipanque, William Chacón, Carlos Luis GIIATA Research Group on Artificial Intelligence and Assistive Technologies Universidad Politécnica Salesiana Cuenca Ecuador GIIATA Research Group on Artificial Intelligence and Assistive Technologies and GIIB Research Group on Biomedical Engineering at Universidad Politécnica Salesiana Cuenca Ecuador PhD of Engineering Computer Science and Control Universidad de Piura Piura Peru Board Member of the Ecuadorian Society of Glaucoma Clinical Santa Lucía Quito Ecuador

ISBN: (纸本)9783030320218

In search of more effective methods in the diagnosis vision and reduce the risk of post-operative ectasia, this article considers the importance of the biomechanical properties of the cornea and its close relationship with the development of corneal and possible conditions diseases in the human eye. For that reason, part of the literature is the review and analysis of the methods raised to remove accurate information from medical equipment, especially in the equipment Oculus Corvis and ORA from the Clinic "Santa Lucia" in the city of Quito. The corneal indices derived from these instruments can measure biomechanical parameters, but that is not accurate because of features such as geometry or thickness of the central corneal. The Young’s modulus corresponds to the elasticity of the corneal tissue. In addition, it is an important biomechanical feature that states different solutions for their extraction in vitro or in vivo through the use of numerical methods and/or modeling of complex systems of equations to simulate the real corneal tissue. There is also the obtaining of the elasticity of the cornea through processes of images of the human eye, which shows the action of the cornea at the time of using the tonometer. As a result, it demonstrate, in some cases, that the Young’s modulus relates only to the intraocular pressure, but also in other cases, it changes due to the increase of other factors such as age of people, corneal resistance, the central cornea thickness, etc. © 2020, Springer Nature Switzerland AG.

关键词： Elasticity

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Optimized Photonic Integrated Circuit Components for Optical Coherence Tomography at 1060 nm

Optimized Photonic Integrated Circuit Components for Optical...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Senyue Hao Aaron J Adkins Yitian Zhang Chao Zhou Department of Electrical & Systems Engineering Washington University in Saint Louis USA Imaging Science PhD Program Washington University in Saint Louis USA Department of Biomedical Engineering Washington University in Saint Louis USA

To implement optical coherence tomography on photonic chips, we developed optimized and experimentally validated silicon nitride-based components for photonic integrated circuits in order to achieve high sensitivity a... 详细信息

ISBN: (纸本)9798350369311

关键词： Sensitivity Optical coherence tomography Photonic integrated circuits Silicon Electro-optical waveguides Photonics

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Symmetry Identification Using Partial Surface Matching and Tilt Correction in 3D Brain Images

Symmetry Identification Using Partial Surface Matching and T...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Xin Liu Celina Imielinska Andrew Laine E. Sander Connolly Anthony L. D'Ambrosio PhD Student in Department of Biomedical Informatics Columbia University New York NY USA Department of Biomedical Informatics Columbia University New York NY USA Department of Biomedical Engineering Columbia University New York NY USA Neurosurgery Department Columbia University New York NY USA

We propose a novel method to automatically compute the symmetry plane and correct the 3D orientation of patient brain images. Many images of the brain are clinically unreadable because of the misalignment of the patient's head in the scanner. We proposed an algorithm that represents the brain volume as a re-parameterized surface point cloud where each location has been parameterized by its elevation (latitude), azimuth (longitude) and radius. The removal of the interior contents of the brain makes this approach perform robustly in the presence of the brain pathologies, e.g. tumor, stroke and bleed. Thus, we decompose the symmetry plane computation problem into a surface matching routine. The search for the best matching surface is implemented in a multi-resolution paradigm so as to decrease computational time considerably. Spatial affine transform then is performed to rotate the 3D brain images and align them within the coordinate system of the scanner. The corrected brain volume is re-sliced such that each planar image represents the brain at the same axial level

关键词： Brain Head Pathology Cities and towns USA Councils Computer displays Sun Iterative algorithms Image representation Iterative methods

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Mechanistic insights of evaporation-induced actuation in supramolecular crystals (Sept, 10.1038/s41563-020-0799-0, 2020)

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NATURE MATERIALS 2021年第3期20卷 434-434页

作者： Piotrowska, Roxana Hesketh, Travis Wang, Haozhen Martin, Alan R. G. Bowering, Deborah Zhang, Chunqiu Hu, Chunhua T. McPhee, Scott A. Wang, Tong Park, Yaewon Singla, Pulkit McGlone, Thomas Florence, Alastair Tuttle, Tell Ulijn, Rein V. Chen, Xi Advanced Science Research Center (ASRC) at the Graduate Center of the City University of New York New York NY USA PhD Program in Chemistry The Graduate Center of the City University of New York New York NY USA Department of Pure and Applied Chemistry University of Strathclyde Glasgow UK PhD Program in Physics The Graduate Center of the City University of New York New York NY USA EPSRC Continuous Manufacturing and Crystallisation Future Research Hub c/o Strathclyde Institute of Pharmacy and Biomedical Sciences Technology Innovation Centre University of Strathclyde Glasgow UK Department of Chemistry New York University New York NY USA Department of Chemistry and Biochemistry Hunter College City University of New York New York NY USA Department of Chemical Engineering The City College of New York New York NY USA

A Correction to this paper has been published: https://***/10.1038/s41563-021-00950-3.

关键词： Condensed-matter physics Materials science Soft materials

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EEG-based Motor Imagery Classification Accuracy Improves With Gradually Increased Channel Number

EEG-based Motor Imagery Classification Accuracy Improves Wit...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society

作者： Haijun Shan Han Yuan Shanan Zhu Bin He with the Department of Biomedical Engineering University of Minnesota USA as a visiting student where the work was conducted. He is a PhD student with the College of Electrical Engineering Zhejiang University Hangzhou Zhejiang China with the Department of Biomedical Engineering University of Minnesota where she collected the online BCI data and is with the Laureate Institute for Brain Research Tulsa OK USA. with College of Electrical Engineering Zhejiang University Hangzhou China with the Department of Biomedical Engineering University of Minnesota Minneapolis MN USA

ISBN: (纸本)9781424441198

The question of how many channels should be sed for classification remains a key issue in the study of I. INTRODUCTION Cursor m ng one-dimensional and t u Brain-Computer Interface. Several studies have shown that a reduced number of channels can achieve the optimal classification accuracy in the offline analysis of motor imagery paradigm, which does not have real-time feedback as in the online control. However, for the cursor movement control paradigm, it remains unclear as to how many channels should be selected in order to achieve the optimal classification. In the present study, we gradually increased the number of channels, and adopted the time-frequency-spatial synthesized method for left and right motor imagery classification. We compared the effect of increasing channel number in two datasets, an imagery-based cursor movement control dataset and a motor imagery tasks dataset. Our results indicated that for the former dataset, the more channels we used, the higher the accuracy rate was achieved, which is in contrast to the finding in the latter dataset that optimal performance was obtained at a subset number of channels. When gradually increasing the number of channels from 2 to all in the analysis of cursor movement control dataset, the average training and testing accuracies from three subjects improved from 68.7% to 90.4% and 63.7% to 87.7%, respectively.

关键词： EEG-based Imagery Classification

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Construction of Triboelectric Series and Chirality Detection of Amino Acids Using Triboelectric Nanogenerator

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Advanced Science 2024年第4期11卷 e2307266页

作者： Pal, Arnab Ganguly, Anindita Wei, Po-Han Barman, Snigdha Roy Chang, Chia-Chih Lin, Zong-Hong International Intercollegiate PhD Program National Tsing Hua University Hsinchu30013 Taiwan Institute of Biomedical Engineering National Tsing Hua University Hsinchu30013 Taiwan Department of Biomedical Engineering National Taiwan University Taipei10617 Taiwan Department of Applied Chemistry National Yang Ming Chiao Tung University 1001 University Road Hsinchu30010 Taiwan

Triboelectrification necessitates a frictional interaction between two materials, and their contact electrification is characteristically based on the polarity variance in the triboelectric series. Utilizing this fundamental advantage of the triboelectric phenomenon, different materials can be identified according to their contact electrification capability. Herein, an in-depth analysis of the amino acids present in the stratum corneum of human skin is performed and these are quantified regarding triboelectric polarization. The principal focus of this study lies in analyzing and identifying the amino acids present in copious amounts in the stratum corneum to explain their positive behavior during the contact electrification process. Thus, an augmented triboelectric series of amino acids with quantified triboelectric charging polarity by scrutinizing the transfer charge, work function, and atomic percentage is presented. Furthermore, the chirality of aspartic acid as it is most susceptible to racemization with clear consequences on the human skin is detected. The study is expected to accelerate research exploiting triboelectrification and provide valuable information on the surface properties and biological activities of these important biomolecules. © 2023 The Authors. Advanced Science published by Wiley-VCH GmbH.

关键词： Amino acids

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