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1993 IEEE Annual Northeast Bioengineering Conference最新文献

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Estimation of long-term vital status of patients after myocardial infarction using a neural network based on the Alopex algorithm 基于Alopex算法的神经网络对心肌梗死患者长期生命状态的估计
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404401
W. Kostis, C. Yi, E. Micheli-Tzanakou
{"title":"Estimation of long-term vital status of patients after myocardial infarction using a neural network based on the Alopex algorithm","authors":"W. Kostis, C. Yi, E. Micheli-Tzanakou","doi":"10.1109/NEBC.1993.404401","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404401","url":null,"abstract":"A large database (Myocardial Infarction Data Acquisition System, or MIDAS) including all 49,250 myocardial infarctions that occurred in the state of New Jersey in 1986 and 1987 with follow-up as long as five years was used in the development and testing of the neural networks. Since the information included in the database was not sufficient to allow the exact prediction of vital status in all patients with 100% accuracy, a neural network able to categorize patients according to the probability of dying within a given period of time rather than predicting categorically whether a given patient will be dead or alive at a given time in the future was developed. An algorithm to accommodate cases where identical input vectors were associated with different outputs (vital status) and a method of linear output adjustment to describe the degree of confidence of each prediction were also developed. The neural network was able to learn and was successful in predicting vital status at six months.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126799835","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
2-D spatial frequency dependence of VEPs: A neural network analysis vep的二维空间频率依赖性:一个神经网络分析
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404396
R. Iezzi, E. Micheli-Tzanakou
{"title":"2-D spatial frequency dependence of VEPs: A neural network analysis","authors":"R. Iezzi, E. Micheli-Tzanakou","doi":"10.1109/NEBC.1993.404396","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404396","url":null,"abstract":"An approach to black-box identification-function problems is introduced. Visual evoked potentials (VEPs) were recorded from normal subjects using stimulus patterns that evolved from a totally random distribution of intensities to an ordered distribution representing a bar. The contribution of all spatial frequencies to the amplitudes of the evoked potentials was studied by performing a 2-D FFT on the stimulus images. The FFT spectra were used as inputs to a neural network as a black box approach in order to study the VEP spatial frequency tuning curves of the subjects.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125151557","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
Automatically registering stereo pairs of tomographic imagery 自动注册立体对层析成像
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404369
S. Wiener, S. Dunn
{"title":"Automatically registering stereo pairs of tomographic imagery","authors":"S. Wiener, S. Dunn","doi":"10.1109/NEBC.1993.404369","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404369","url":null,"abstract":"A method for finding correspondences between points on a stero pair of 2-D electron micrographs of networks is developed. The objective for finding these matches is to combine stereo images of the same specimen to generate a 3-D representation. To perform the analysis, the gray level images of the micrographs are first binarized and thinned, and the network intersection points are detected. An algorithm which uses a geometric hashing scheme is then applied to detect corresponding points in the images. This algorithm is invariant to rotation, translation, and scale. The system has been tested on images of skeletal muscle tissue tubule networks.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130563363","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: 1
Measurement of mechanical properties of soft limb tissue as a diagnostic tool 测量肢体软组织的力学性能作为诊断工具
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404418
A. Wisaksana, L. Ostrander, B. Cagir, B.Y. Lee
{"title":"Measurement of mechanical properties of soft limb tissue as a diagnostic tool","authors":"A. Wisaksana, L. Ostrander, B. Cagir, B.Y. Lee","doi":"10.1109/NEBC.1993.404418","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404418","url":null,"abstract":"A comparison of the mechanical properties of limb soft tissues during edema and during the internal limb pressure elevation of the compartment syndrome with measurements from subjects having healthy limbs is discussed. Measurements were taken noninvasively on the anterior surface of the lower limb over the muscle mass. Tissue displacement was recorded against indentation pressure. From the resulting curves, parameters of tissue softness and departure from linear elastic behavior were calculated. Statistically significant differences in the mechanical properties of soft limb tissue in the presence of edema and in the presence of compartment syndrome compared to normal limb tissues are observed.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133712189","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
Bispectrum analysis of EEG of a dog to determine the depth under halothane anesthesia 氟烷麻醉下犬脑电图双谱分析确定深度
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404440
J. Muthuswamy, R. Roy
{"title":"Bispectrum analysis of EEG of a dog to determine the depth under halothane anesthesia","authors":"J. Muthuswamy, R. Roy","doi":"10.1109/NEBC.1993.404440","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404440","url":null,"abstract":"The solution of the problem of finding the depth of anesthesia or the level of unconsciousness by monitoring the electroencephalogram (EEG) is considered. The bispectrum analysis of the EEG of a dog is studied to determine any trends with increasing depth of anesthesia. Of the four channels of EEG analyzed, channel 1 (L/sub r/-L/sub 0/) seems to show a strong coupling between frequencies in the range of 6-10 Hz around 78% of the time when the dog is asleep (depth = 1.0) and a weak or no coupling between frequencies in the same range around 67% of the time when the dog is awake (depth = 0.0).<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132753076","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: 3
Mathematical modeling of an advanced aircrew breathing system 一种先进机组呼吸系统的数学建模
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404410
J. C. Byrne, B. Hartmann, C.J. McIlwain-Axten, P. Donaher
{"title":"Mathematical modeling of an advanced aircrew breathing system","authors":"J. C. Byrne, B. Hartmann, C.J. McIlwain-Axten, P. Donaher","doi":"10.1109/NEBC.1993.404410","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404410","url":null,"abstract":"The Advanced Aircrew Oxygen Delivery System (AAODS) program, a computerized mathematical model for dynamically simulating the performance of oxygen delivery systems, is discussed. The program generates estimates of respiratory parameters, the pressure, density, and velocity associated with grid points on a hose, the pressure in a face mask, and the pressure and density maintained by a breathing regulator. The mathematical modeling of the respiratory, face-mask, hose and regulator modules are described and the implementation of the models is summarized.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125688110","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: 1
Structure and organization of UMDNJ-NJIT Joint Master of Science program in biomedical informatics UMDNJ-NJIT生物医学信息学联合硕士项目的结构和组织
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404353
S. S. Haque
{"title":"Structure and organization of UMDNJ-NJIT Joint Master of Science program in biomedical informatics","authors":"S. S. Haque","doi":"10.1109/NEBC.1993.404353","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404353","url":null,"abstract":"The University of Medicine and Dentistry of New Jersey and the New Jersey Institute of Technology have combined their resources to offer a joint master of science degree program in biomedical informatics. An overview of biomedical informatics is given, and needs assessment data are discussed. The program goals and curriculum are discussed.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123590180","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
Hoof wall function in horses and donkeys: Experimental alteration of surface strain 马和驴蹄壁功能:表面应变的实验改变
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404413
Youngju H. Chang, J. Sherrill, J. Bertram
{"title":"Hoof wall function in horses and donkeys: Experimental alteration of surface strain","authors":"Youngju H. Chang, J. Sherrill, J. Bertram","doi":"10.1109/NEBC.1993.404413","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404413","url":null,"abstract":"Surface strains recorded from multiple rosette gauges at different sites on the left forehooves of horses and donkeys during walks at 1.8 m/s are discussed. The strain pattern of the wall was manipulated by adding 12 mm cleat wedges to the heels of the horseshoes. Principal strains were repeatable for each gauge site and cleat situation on an individual. Substantial inter-individual variation existed. Peak principal strains were always in compression. Under normal circumstances (no cleats attached) peak strains were on the order of 1000-3000 /spl mu//spl epsi/, depending on gauge site. Biaxial compression dominated in the wall, but the degree of horizontal compression was reduced by altering the mediolateral balance of the foot. The strain pattern of the hoof wall correlates well with the complex fiber orientation of the wall material and appears to result from well coordinated distortion of different regions of the structure.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"07 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125218361","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: 6
Hydraulically dampened knee flexion orthosis 液压阻尼膝关节屈曲矫形器
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404393
M. Messner, A. Davari
{"title":"Hydraulically dampened knee flexion orthosis","authors":"M. Messner, A. Davari","doi":"10.1109/NEBC.1993.404393","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404393","url":null,"abstract":"The hydraulically dampened knee flexion orthosis (HDKFO) is described. The HDKFO borrows advances in prosthetics applied in amputee rehabilitation and applies them to orthotic therapy. The problem of unstable gait is discussed, and the standard commercial knee brace within the HDKFO is described.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128107520","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: 1
On generalized adaptive neural filters with application to enhancing EKG signals 广义自适应神经滤波器在心电信号增强中的应用
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404400
Zeeman Z. Zhang, Nirwan Ansari
{"title":"On generalized adaptive neural filters with application to enhancing EKG signals","authors":"Zeeman Z. Zhang, Nirwan Ansari","doi":"10.1109/NEBC.1993.404400","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404400","url":null,"abstract":"A class of nonlinear adaptive filters called generalized adaptive neural filters (GANFs) developed to generalize stack filters to a larger class of nonlinear filters and to outperform stack filters is discussed. They are based on the theory of stack filters and neural networks. It is shown that GANFs have better noise suppression performance than stack filters. The implementation of GANFs is discussed, and the theoretical analysis in regards to the performance of GANFs on EKG signal processing is also presented.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133540016","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: 1
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