2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC)最新文献_第2页

PANDA: Paediatric attention-deficit/hyperactivity disorder app 熊猫:儿童注意力缺陷/多动障碍应用程序

2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC) Pub Date : 2018-04-01 DOI: 10.1109/SAIBMEC.2018.8363190

Romano Swarts, H. Mwamba, P. Fourie, D. van den Heever

{"title":"PANDA: Paediatric attention-deficit/hyperactivity disorder app","authors":"Romano Swarts, H. Mwamba, P. Fourie, D. van den Heever","doi":"10.1109/SAIBMEC.2018.8363190","DOIUrl":"https://doi.org/10.1109/SAIBMEC.2018.8363190","url":null,"abstract":"The development of a novel method that validates and enhances the current subjective diagnostic methods/tools for attention-deficit/hyperactivity disorder (ADHD) is investigated. The proposed method/tool is in the form of a tablet-based game with underlying artificial intelligence, such as machine learning. Two mini-games were developed, each dealing with one ADHD subtype: the inattentive subtype and the hyperactivity subtype. The objective of each mini-game is to differentiate between an ADHD individual (either from the inattentive or hyperactivity subtype) and a non-ADHD individual, based on game-play data. The design of the mini-games was based on analyzing the ADHD criteria defined by the Diagnostic and Statistical Manual of Mental Disorders (DSM-V) and converting those criteria into measurable parameters, where applicable. Those measurable parameters were then implemented in the mini-games and used as a means to gather objective data. Beta-testing was performed with a population of 40 subjects (20 ADHD-inattentive, 20 ADHD-hyperactivity) between the ages of 4 and 17 years old. A clinical study has begun following mini-games optimisation based on feedback obtained during beta-testing. The clinical study comprises a total of 200 subjects between the ages of 4 and 17 years of age. 156 subjects will be used to train and validate the proposed machine learning algorithms, while the remaining 44 will be used to test the classification accuracy of the algorithms. According to a statistical POWER analysis, it was seen that using a sample size of 156, an ADHD population could be differentiated from a non-ADHD population with 16% error. Given this fact, it is speculated that using neural networks and support vector machines, a smaller error can be expected.","PeriodicalId":165912,"journal":{"name":"2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122656053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Musculoskeletal modeling of crouch gait 蹲伏步态的肌肉骨骼建模

2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC) Pub Date : 2018-04-01 DOI: 10.1109/SAIBMEC.2018.8363188

T. Guess, Swithin S. Razu

{"title":"Musculoskeletal modeling of crouch gait","authors":"T. Guess, Swithin S. Razu","doi":"10.1109/SAIBMEC.2018.8363188","DOIUrl":"https://doi.org/10.1109/SAIBMEC.2018.8363188","url":null,"abstract":"Crouch gait affects older adults following stroke and is common in children with cerebral palsy. Contracture, spasticity, and increased activation of the hamstrings are often implicated in pediatric crouch gait. Instrumented prosthetics have measured tibiofemoral contact forces in older adults walking in a crouched posture, but contact forces experienced during clinical crouch gait may be much higher. The effect of abnormal muscle forces on knee arthrokinematics and loading of individual knee structures is important to understanding the consequences of crouch gait on developing knees and in older patients with prosthetic components. This project used computational methods that concurrently consider knee anatomy and prosthetic geometry, muscle activation, and body motion to simulate the effect of altered muscle activations on knee loading during crouch gait for a person with an instrumented total knee prosthetic. Measured EMG signals were decomposed into muscle synergies and alterations to synergy weightings provided a means to modify neural command signals in forward dynamics simulations of crouch gait. Open-chain seated leg extension exercises were used to adjust certain muscle properties from generic values and the resulting musculoskeletal model predicted medial and lateral tibiofemoral contact forces within 0.33 and 0.38 bodyweight of measured over one crouch gait cycle. Increasing hamstring activation during stance increased knee loading, posterior tibia translation, and loading on the posterior cruciate ligament.","PeriodicalId":165912,"journal":{"name":"2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC)","volume":"33 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125529200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Architecture of a village small cell network for mobile health 农村移动医疗小蜂窝网络架构

2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC) Pub Date : 2018-04-01 DOI: 10.1109/SAIBMEC.2018.8363172

B. Malila, Tinashe Ernest Mutsvangwa, T. Douglas

引用次数: 5

Development of a system mobile-based to assist asthma self-management 开发一个基于移动的系统，以协助哮喘自我管理

2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC) Pub Date : 2018-04-01 DOI: 10.1109/SAIBMEC.2018.8363186

T. A. Silva, M. Costa, R. Stelmach, Peter K. Bley, M. A. Gutierrez, C. Filho

引用次数: 2

A case of healthcare supply chain visibility in South Africa 南非医疗保健供应链可见性案例

2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC) Pub Date : 2018-04-01 DOI: 10.1109/SAIBMEC.2018.8363179

Munyaradzi Bvuchete, S. Grobbelaar, J. van Eeden

{"title":"A case of healthcare supply chain visibility in South Africa","authors":"Munyaradzi Bvuchete, S. Grobbelaar, J. van Eeden","doi":"10.1109/SAIBMEC.2018.8363179","DOIUrl":"https://doi.org/10.1109/SAIBMEC.2018.8363179","url":null,"abstract":"Statistically 8.5% of annual gross domestic (GDP) expenditure in South Africa is on healthcare but the country still experience poor healthcare outcomes. The South African public healthcare system still experience challenges such as escalated healthcare costs, and medicines stock outs. With 25%–30% of the costs emanating from the healthcare supply chain and 80% of the population dependent on the public healthcare system, undoubtedly, this represents a significant potential for more effective management and improvement of the healthcare supply chain with respect to the reduction of cost and medicines access. However, trying to create a balance between reducing healthcare supply chain costs and improving access results in healthcare supply chain complexity. The literature searched appears to suggest that supply chain visibility and demand driven supply chain management approaches can help address such complexities and challenges. Therefore it is the prime intention of this study to explore: (i) what is supply chain visibility (ii) the importance of supply chain visibility in healthcare (ii) how the Vodacom/Mezzanine ware Stock Visibility Solution (SVS) can be used as a tool to facilitate supply chain visibility (iii) how the Stock Visibility Solution can enable demand driven supply chain management.","PeriodicalId":165912,"journal":{"name":"2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC)","volume":"371 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122923963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Platforms in healthcare innovation ecosystems: The lens of an innovation intermediary 医疗创新生态系统中的平台:创新中介的视角

2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC) Pub Date : 2018-04-01 DOI: 10.1109/SAIBMEC.2018.8363191

C. Ngongoni, S. Grobbelaar, C. Schutte

引用次数: 10

Voice quality enhancement for vocal tract rehabilitation 声道康复的语音质量增强

2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC) Pub Date : 2018-04-01 DOI: 10.1109/SAIBMEC.2018.8363197

Bianca Sutcliffe, L. Wiggins, D. Rubin, V. Aharonson

{"title":"Voice quality enhancement for vocal tract rehabilitation","authors":"Bianca Sutcliffe, L. Wiggins, D. Rubin, V. Aharonson","doi":"10.1109/SAIBMEC.2018.8363197","DOIUrl":"https://doi.org/10.1109/SAIBMEC.2018.8363197","url":null,"abstract":"Vocal rehabilitation devices used by patients after Laryngectomy produce an unnatural sounding speech. Our study aims at increasing the quality of these synthetically generated voices by implementing human-like characteristics. A simplified source filter model, linear predictive coding coefficients and line spectral frequencies were used to model the vocal tract and manipulate the acoustic features of their resulting speech. Two different mapping functions were employed to convert between the features of synthetically generated voice and those of a human voice: A Gaussian mixture model and a linear regression model. The models were trained on a set of 50 human and 50 synthetic voice utterances. Both mapping functions yielded significant changes in the transformed synthetic voices and their spectra were similar to the human voices. The linear regression model mapping produced slightly better results compared to the Gaussian mixture model mapping. Listeners' tests confirmed this result, but indicated that voices re-synthesized from the transformed model coefficients, improved on the synthetic voice but still sounded unnatural. This may imply that the vocal tract model is lacking in information that produces the subjective perception of “artificial speech”. Future work will investigate an elaborate model which will include the speech production excitation and radiation signals and the transformation of their features. These models have the potential to improve the conversion of synthetically generated electrolarynx voice into human sounding one.","PeriodicalId":165912,"journal":{"name":"2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC)","volume":"75 2-3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133055084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a signal processing and feature extraction framework for the safe passage study 用于安全通道研究的信号处理和特征提取框架的开发

2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC) Pub Date : 2018-04-01 DOI: 10.1109/SAIBMEC.2018.8363193

E. Kieser, H. Odendaal, D. van den Heever

引用次数: 3

Electrospun bioresorbable tissue repair scaffolds: From laboratory to clinic 电纺丝生物可吸收组织修复支架:从实验室到临床

2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC) Pub Date : 2018-04-01 DOI: 10.1109/SAIBMEC.2018.8363177

M. Raxworthy, L. P. Serino, P. Iddon

引用次数: 2

Hyperspectral imaging for cancer detection and classification 用于癌症检测和分类的高光谱成像

2018 3rd Biennial South African Biomedical Engineering Conference (SAIBMEC) Pub Date : 2018-04-01 DOI: 10.1109/SAIBMEC.2018.8363180

M. Nathan, A. S. Kabatznik, A. Mahmood

引用次数: 16