检索结果-内蒙古大学图书馆

2024 International Conference on Control, Automation and Diagnosis, ICCAD 2024

作者： Gonzalez-Cely, A.X. Dantas, André Felipe Oliveira De Azevedo Santo, Caroline Cunha Do Espirito Bastos-Filho, Teodiano F. Delisle-Rodriguez, Denis Federal University of Espirito Santo Robotics and Assistive Technology Laboratory Vitoria Brazil Santos Dumont Institute Postgraduate Program In Neuroengineering Macaiba Brazil

ISBN: (纸本)9798350361025

Providing alternatives for lower limb moment control in post-stroke or post-Spinal Cord Injury (SCI) patients who have suffered a severe neural impairment many years ago can further improve the effect of rehabilitation. This work proposes a multitask system for dorsiflexion of the right, left, and both feet through Electroencephalography and Functional Electrical Stimulation (FES). A Butterworth bandpass filter between 8 and 30 Hz is implemented, and subsequently, three strategies are developed by first considering the power spectral density features in mu, low-beta, and high-beta bands responsible for motor task execution. Moreover, the second strategy uses Common Spatial Patterns filters, and the third strategy uses Riemannian Geometry (RG) to extract features. Four distinct classifiers were explored: k-nearest neighbors, support vector machine, Linear Discriminant Analysis (LDA), and decision tree. Based on Accuracy (ACC), True Positive Rate (TPR), and False Positive Rate (FPR) were evaluated the classifiers and the strategies implemented by achieving an ACC of 0.79, a TPR of 0.89 and a FPR of 0.05 employing RG + LDA. The implemented methodology allows the feasibility of a Human-Machine Interface (HMI) which implements a lower-limb MI task recognition system to be used in rehabilitation. Future work will implement the recognition system in real-time to users move the desired limb by activating a FES that generates contraction. © 2024 IEEE.

关键词： Electroencephalography

来源：评论

学校读者我要写书评

暂无评论

Innovative Smart Care Space Solutions: Integrating technology and Universal Design for People with Significant Severe Disabilities 1

引用

20th International Conference on Smart Living and Public Health, ICOST 2023

作者： Lee, Kuem Ju Song, Won-Kyung Department of Rehabilitative and Assistive Technology National Rehabilitation Center Seoul01022 Korea Republic of Translational Research Program for Care Robots National Rehabilitation Center Seoul01022 Korea Republic of

ISBN: (数字)9783031439506

ISBN: (纸本)9783031439490

This study aimed to develop and implement smart care spaces (SCS) to improve the quality of life and convenience for individuals with significant severe disabilities. By analyzing Korean and international case studies, the study integrated technology, universal design principles, and stakeholder feedback, along with care robots for daily living assistance. Various areas within the SCS address the unique needs of people with severe disabilities. The first SCS was constructed in the Nuri Hall of the National Rehabilitation Center in Korea as a pilot project. Future plans include continuous improvement and utilization of the space based on user experiences, feedback, and results of usability evaluation to reduce the caregiving burden and promote inclusive environments. © 2023, The Author(s).

关键词： Machine design

来源：评论

学校读者我要写书评

暂无评论

A virtual positioning system for external beam radiotherapy

引用

Virtual Reality 2023年第3期27卷 2569-2582页

作者： Sung, Wen-Hsu Jiang, Ching-Fen Su, Tai-Sin Sun, Shuh-Ping Department of Physical Therapy and Assistive Technology National Yang Ming Chiao Tung University Taipei Taiwan Graduate Program of Smart Healthcare and Bioinformatics I-Shou University Kaohsiung Taiwan Department of Biomedical Engineering I-Shou University Kaohsiung Taiwan Department of Digital Media Design I-Shou University Kaohsiung Taiwan

In radiation therapy, positioning patients to ensure the accuracy of the setup of a procedure is a routine and labour-intensive process that substantially determines the efficacy of treatment. In this study, we propose a virtual positioning system that can simulate the positioning process with a visible beam path under the broad view of a life-like patient-positioning platform to obviate problems with excessively narrow view. This system integrates image processing, computer graphics, and virtual reality to encompass a 3D treatment target reconstructed from medical images of different modalities in a virtual scene. An innovative evaluation method is further proposed to verify the efficacy of the system using a full-scale 3D solid anthropometric model, and a treatment target showed an accuracy of 99% in calibration and a mean compatibility of 95% with an actual measurement. The proposed virtual positioning system provides a training and education platform for radiation therapy. The methodology through which the system was developed is also disclosed as a promising approach to improve the efficiency and safety of the position verification process for existing systems. © 2023, The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature.

关键词： Radiotherapy

来源：评论

学校读者我要写书评

暂无评论

Multitask Lower Limb Classification System for Dorsiflexion Rehabilitation by Using Electroencephalography and Functional Electrical Stimulation

Multitask Lower Limb Classification System for Dorsiflexion ...

引用

International Conference on Control, Automation and Diagnosis (ICCAD)

作者： Gonzalez-Cely A. X. André Felipe Oliveira De Azevedo Dantas Caroline Cunha Do Espirito Santo Teodiano F. Bastos-Filho Denis Delisle-Rodriguez Robotics and Assistive Technology Laboratory Federal University of Espirito Santo Vitoria Brazil Postgraduate Program in Neuroengineering Santos Dumont Institute Macaiba Brazil

ISBN: (数字)9798350361025

ISBN: (纸本)9798350361032

关键词： Support vector machines Neuroplasticity Filters Muscles Feature extraction Iron Real-time systems

来源：评论

学校读者我要写书评

暂无评论

Classification algorithm for wheelchair operation in real conditions using POF-based pressure sensors

Classification algorithm for wheelchair operation in real co...

引用

Latin American Electron Devices Conference (LAEDC)

作者： A. X. Gonzalez-Cely C.F. Blanco-Díaz Camilo A.R. Díaz T. Bastos-Filho Robotics and Assistive Technology Laboratory Postgraduate Program in Electrical Engineering Federal University of Espírito Santo Vitoria Brazil Telecommunications Laboratory Postgraduate Program in Electrical Engineering Federal University of Espírito Santo Vitoria Brazil

ISBN: (数字)9798350361292

ISBN: (纸本)9798350361308

A real-time implementation of a classification system is proposed here to operate an electric-powered wheelchair. The proposed framework innovatively integrates Polymeric Optical Fiber (POF)-based pressure sensors, positioned within a neck pillow, to effectively capture critical user-specific pressure data emanating from the user’s neck region. The system considered the mechanical variations presented in the dataset construction owing to the movement generated by the wheelchair. To mitigate this inherent noise, an indispensable preprocessing stage is introduced, and a feature extraction stage is performed considering the variance, Root Mean Square (RMS), Crest Factor Margin (CMF), and Margin Factor (MF) in the time domain. This augmentation enhances the discriminative capacity of the feature representation and, consequently, enhances the classification performance. A fine k-Nearest Neighbors (kNN) was able to distinguish four neck movements: forward, right, left, and back, with performance metrics of: 80.39% (Accuracy), 87.09% (AUC), and 19.40% (False Positive Rate). This work contributes to the development of new strategies for the implementation of more robust power wheelchair controllers by integrating machine learning and optical fiber sensors, in order to assist people with disabilities.

关键词： Pressure sensors Optical fiber sensors Accuracy Wheelchairs Neck Classification algorithms Polymers

来源：评论

学校读者我要写书评

暂无评论

Real-Time Wheelchair Controller Based on POF-Based Pressure Sensors

Real-Time Wheelchair Controller Based on POF-Based Pressure ...

引用

Latin American Electron Devices Conference (LAEDC)

作者： A.X. González-Cely C.F. Blanco-Díaz Díaz Camilo A.R. T Bastos-Filho Telecommunications Laboratory Graduate Program in Electrical Engineering Federal University of Espírito Santo Av. Fernando Ferrari 514-Goiabeiras Vitoria Brazil Robotics and Assistive Technology Laboratory Graduate Program in Electrical Engineering Federal University of Espírito Santo Av. Fernando Ferrari 514-Goiabeiras Vitoria Brazil

The design of electrical wheelchair controllers remains a challenge for the scientific community. In recent years, Polymer Optical Fiber (POF)-based sensors have been used for biomedical applications, however, the application of these types of sensors for the control of assistive devices has been little explored. For this reason, this work proposes the design and validation of a fuzzy logic controller that uses information from an array of POF-based sensors located in a pillow, which is used for wheelchair control in four directions (right, left, forward and stop) by using neck movements. The results allow concluding that the system is fast, accurate, and reliable. This work presents a contribution related to the design of assistive devices based on optical fiber sensors and focuses on people with upper- and lower-limb mobility restrictions. Future studies will address the evaluation of the system for people with disabilities.

关键词：

来源：评论

学校读者我要写书评

暂无评论

assistive technology self-management intervention for older Hispanics: a feasibility study

引用

Disability and Rehabilitation: assistive technology 2020年第8期15卷 862-870页

作者： Orellano-Colón, Elsa M. Harrison-Cruz, Stephanie López-Lugo, Edith Ramos-Peraza, Stephanie Meléndez-Ortiz, Alexandra Ortiz-Torres, Johan Rodríguez-Marrero, Janice Occupational Therapy Program School of Health Professions Medical Sciences Campus University of Puerto Rico San Juan Puerto Rico Puerto Rico Assistive Technology Program Research and Technology Vice-Presidency San Juan Puerto Rico

Purpose: Even though assistive technology (AT) can overcome disabilities, Hispanics are among the least likely to use AT. We aimed to assess the feasibility of an assistive technology AT and disability self-management intervention concerning recruitment, retention, adherence, acceptability, preliminary evaluation of participants’ responses to intervention and preliminary efficacy. Methods: We used mixed-method intervention design with a pre- and post-test quantitative model with an experimental intervention and qualitative data obtained after the intervention. Ten older Hispanics were enrolled in an eight weeks group intervention. Instruments to measure feasibility and pre/post participants’ report outcomes of quality of life (Psychosocial Impact of assistive Device Scale [PIADS] Short Form), global health (PROMIS General Health Short Form), self-efficacy (Self-efficacy Scale) and performance difficulties (Individualized Prioritized Problem Assessment [IPPA]) were used. Results: Recruitment, retention and adherence rates were high, the intervention was acceptable, and the participants reported outcomes, such as: new knowledge and skills, enhanced activity performance and participation, increased safety and willingness to use AT, decreased performance difficulties and enhanced quality of life. Conclusion: The intervention was feasible and acceptable and is promising in decreasing performance difficulties in daily activities as well as in having a positive impact in older Hispanics’ quality of *** FOR REHABILITATION Older Hispanics living in Puerto Rico experience a high prevalence of disabilities in independent living. In a relative small sample this study shows that an assistive technology (AT) and disability self-management intervention for older Hispanics living in Puerto Rico is feasible to be delivered in a group format and in the community context. Older Hispanics living in Puerto Rico can potentially decrease performance difficulties in daily liv

关键词： activities of daily living frail elderly Hispanics independent living Self-help devices therapeutic use

来源：评论

学校读者我要写书评

暂无评论

Roborueda: Python-Based GUI to Control a Wheelchair and Monitor User Posture

SSRN

引用

SSRN 2023年

作者： Gonzalez-Cely, Aura Ximena Blanco-Diaz, Cristian Felipe Diaz, Camilo A.R. Bastos-Filho, Teodiano Freire Robotics and Assistive Technology Laboratory Graduate Program in Electrical Engineering Federal University of Espirito Santo Av. Fernando Ferrari 514 Espirito Santo Vitoria29075-910 Brazil Telecommunications Laboratory Graduate Program in Electrical Engineering Federal University of Espirito Santo Av. Fernando Ferrari 514 Espirito Santo Vitoria29075-910 Brazil

The increasing development of Optical Fiber Sensors (OFS) and inertial sensors applied into the health area. The use of neck and/or head motion for people with physical impairments in their limbs allows achieving independence and improve their mobility. This paper addresses a gap based on the development of Human-Machine Interfaces by introducing Roborueda, a robust Graphical User Interface (GUI) designed to facilitate interaction of electric wheelchair users, with a primary focus on enhancing mobility and preventing future illnesses. The main objective of the system is to monitor the body posture and control the wheelchair using neck and head motion, through the GUI. The interface incorporates machine learning and fuzzy logic techniques and a robust communication system using the Python programming language. The GUI was developed using PyQt, and data exchange between Python libraries was facilitated through dataframes and multithreading. Furthermore, the classification model was loaded, while Wi-Fi communication employ sockets and User Datagram Protocol. The user-friendly GUI offers a range of functionalities, including the ability to adjust controllers, and gather system information, among others. The implementation of this interface marks a significant step towards integrating OFS, which is a contribution to the advancement of assistive technologies. To ensure the effectiveness and practicality of Roborueda, future work will focus on validating the system through extensive testing with wheelchair users, thereby obtaining valuable feedback and making further improvements. © 2023, The Authors. All rights reserved.

关键词： Fuzzy logic

来源：评论

学校读者我要写书评

暂无评论

Immediate Effect of Ankle Exoskeleton on Spatiotemporal Parameters and Center of Pressure Trajectory After Stroke

Immediate Effect of Ankle Exoskeleton on Spatiotemporal Para...

引用

IEEE International Conference on Rehabilitation Robotics (ICORR)

作者： Mouhamed Zorkot Andrezza Luiza Silva Viana Fabricio Lima Brasil Aline Layze Pereira Da Silva Gabriel Fernandes Borges Caroline Cunha Do Espírito Santo Edgard Morya Silvestro Micera Solaiman Shokur Mohamed Bouri Translational Neural Engineering (TNE) lab and Rehabilitation and Assistive Robotics (REHAssist) lab Swiss Federal Institute of Technology (EPFL) Lausanne Switzerland Neuroengineering Program Edmond and Lily Safra International Institute of Neuroscience Santos Dumont Institute Macaíba Brazil Biorobotics Institute Scuola Superior Sant’ anna Pisa Italy

Gait impairments is a common condition in post-stroke subjects. We recently presented a wearable ankle exoskeleton called G-Exos, which showed that the device assisted in the ankle's dorsiflexion and inversion/reversion movements. The aim of the current pilot study was to explore spatiotemporal gait parameters and center of pressure trajectories associated with the use of the G-Exos in stroke participants. Three post-stroke subjects (52-63 years, 2 female/1 male) walked 160-meter using the G-Exos on the affected limb, on a protocol divided into 4 blocks of 40-meters: (I) without the exoskeleton, (II) with systems hybrid system, (III) active only and (IV) passive only. The results showed that the use of the exoskeleton improved swing and stance phases on both limbs, reduced stride width on the paretic limb, increased stance COP distances, and made single support COP distances more similar between the paretic and non-paretic limb. This suggests that all G-Exos systems contributed to improving body weight bearing on the paretic limb and symmetry in the gait cycle.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A physical picture of liquid–liquid phase separation of proteins

引用

Journal of Molecular Liquids 2025年 424卷

作者： Kinoshita, Masahiro Hayashi, Tomohiko Nakamura, Yuka Yoshimori, Akira Katahira, Masato Nagata, Takashi Department of Chemistry of Science Chiba University 1-33 Yayoi-cho Inage Chiba263-8522 Japan Institute of Advanced Energy Kyoto University Kyoto Uji611-0011 Japan Interdisciplinary Program of Biomedical Engineering Assistive Technology and Art and Sports Sciences Faculty of Engineering Niigata University 8050 Ikarashi 2-no-cho Nishi-ku Niigata950-2181 Japan Department of Physics Niigata University Niigata950-2181 Japan

Liquid-liquid phase separation (LLPS) of proteins, by which they assemble and partition into a protein-dense phase and a protein-dilute phase, has caught much attention due to its essential roles in a variety of biological processes. Nevertheless, its mechanism remains to be unveiled. Here we develop a physical picture covering almost all the aspects of LLPSs of diverse systems. In our view, when only the proteins are looked at, one of the two phases is liquid-like and the other is gas-like. We relate LLPS to gas–liquid phase separation (GLPS) of simple fluids wherein the pivotal quantity is kBT (kB is the Boltzmann constant and T is the absolute temperature) divided by the absolute value of the minimum of interaction potential between fluid particles. GLPS occurs only if the pivotal quantity is sufficiently small. For LLPS, the interaction potential must be replaced by the potential of mean force (PMF) between protein molecules in aqueous solution. We do not explicitly consider aqueous solution, and its influence on properties of protein molecules is incorporated in PMF. PMF can reach its deep minimum when the two protein molecules associate. A physical interpretation is given for GLPS from a statistical-mechanics point of view, and it is extended to LLPS. In the extension, we discuss not only the similarities between the two phase separations but also the physical factors to be taken into account only in LLPS due to the fact that proteins are large molecules possessing polyatomic structures and they are immersed in aqueous solution. LLPS can be categorized as a biological self-assembly process. By reconsidering the results obtained in our earlier studies on biological self-assembly processes, we specify the entropic and energetic factors driving or opposing coacervation (association) of protein molecules followed by LLPS. We clarify the differences between LLPSs of folded proteins (i.e., proteins in the native states) and intrinsically disordered proteins. There c

关键词： Alkali halides

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：