Alex Urfer

Idaho State University, Physical and Occupational Therapy, Faculty Member

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A Motor Point Identification Technique Based on Dempster Shafer Theory

Volume 3: Industrial Applications; Modeling for Oil and Gas, Control and Validation, Estimation, and Control of Automotive Systems; Multi-Agent and Networked Systems; Control System Design; Physical Human-Robot Interaction; Rehabilitation Robotics; Sensing and Actuation for Control; Biomedical Sy..., 2014

The objective of this work is to identify the motor point location from the obtained sEMG signals... more The objective of this work is to identify the motor point location from the obtained sEMG signals using Dempster Shafer theory (DST). The proposed technique is applied on data obtained from a male test subject. In particular, the sEMG signals and its corresponding skeletal muscle force signals from the Flexor Digitorum Superficialis are acquired at a sampling rate of 2000 Hz using a Delsys Bangnoli- 16 EMG system. The acquired sEMG signals are rectified and filtered using a Discrete Wavelet Transforms (DWT) with a Daubechies 44 mother wavelet. For the system identification, an Output Error (OE) model structure is assumed to obtain the dynamic relation between the sEMG signal and the corresponding finger force signals. Subsequently, model based probabilities and fuzzy inference based probabilities are obtained for discrete sensor locations of a sEMG sensor array. Considering these evidences, a DST based motor point location identification method is proposed. The results based on one ...

[Anterior cruciate ligamentplasty. Comparative results of various surgical technics]

PubMed, 1987

The Physiological Effects of Standing Posture and Upper Extremity Fixation in Patients with Copd

Cardiopulmonary physical therapy journal, 1995

Physical therapy involvement in this program occurred in several phases. Description : The initia... more Physical therapy involvement in this program occurred in several phases. Description : The initial phase involved education of the physical therapy staff involved, development of evaluation tools, and definition of appropriate areas of PT intervention. Once physical therapy services were established, PT's became involved in the development of the interdisciplinary program. Two major components are a "Pulmonary Rehabilitation Patient Education Series" and a "Better Breathing Upper Extremity/Lower Extremity Exercise Group." We are currently developing tools and mechanisms for measuring outcomes. Observation : Physical therapy plays a critical role in the rehabilitation of this patient population. Although they all have the common denominator of underlying pulmonary disease, these patients present with a variety of other physical therapy problems. Some of these problems are related to the underlying disease process and some are not, but most respond favorably to PT intervention. Conclusion : It is important that physical therapists become involved in all stages of program development and evaluation, so that we can establish roles and standards of care.

Alex Urfer

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