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Transradial prosthesis is an artificial wearable limb that provides the functionality and/or appearance of human wrist and hand. Over the recent years, both hardware and control systems for active transradial prosthesis show significant advancement. In that context, this paper reviews the modern transradial prostheses developed for performing activities of daily living. Focus is to provide an insight...
In this paper we focused on the model identification of the motion process of the tennis players with disabilities during the tennis match. An equivalent inverted pendulum model is introduced for the kinetic of the motion. The coordinates of the mass center of the body are determined by measurements with a system of video cameras and additional software. Recorded data are post-processed by means of...
The aim of this study was to explore the effects of gamification on engineering lab activities by providing empirical evidence of the effect of gamification on students working in an engineering lab. Although gamification has been applied in several contexts including business, marketing, corporate management, and online communities and social networks, little research has been conducted on the application...
With the rapid increase in the number of deaths worldwide due to blood related diseases such as malaria, sickle cell anemia and other types of anemias, the importance of more insightful studies on healthy red blood cell (RBC) membrane cannot be overemphasized since the development and progression of these infectious diseases are closely related to the state of the membrane. Furthermore, due to the...
Quantification of the insertion site of anterior cruciate ligament (ACL) in the knee can help understand the role of the ligament and develop its surgical methods to restore its function. The site of ACL insertion could be significantly affected by physician's experience and imaging plane in radiograph. In this study, we proposed a computational method that can detect features on a three-dimensional...
A bioengineering course is offered to senior students in the Mechanical Engineering major as an elective at Penn State Behrend in the first semester of their senior year. On average around 20 students enroll in this project-based course and 72% of their grade depends on three comprehensive group projects, one of which is to design a bone plate for a fractured femur. 6% of the grade comes from an individual...
In the previous studies, contradictory results were reported on walking symmetry. The walking symmetry is important in the study of the evolution of bipedalism and gait therapy. This study investigated the effects of laterality and walking speed on gait symmetry during three conditions of walking on a treadmill, namely pushing while walking, walking with arm-swing, and walking while holding on a handlebar...
An anti-ejection control strategy was proposed for the characteristics of underactuated prosthetic hand grasping process. The reference position can be calculated and the stiffness of objects can be estimated by the feedback signals of force and position. When the driving joint approaches the reference position and the actual grasp force does not reach the desired value, which means that the ejection...
This investigation involved the testing of the suitability of a new plantar axis for the longitudinal study of older adult gait. The targeting involved fastening of small flat robber plugs on the foot sole to provide digital marking in plantar pressure recording. Trial involved 15 adults who performed a two-step gait on a custom-built walking access-ramp. The pressure image recordings were processed...
Identifying wrist and finger flexions from surface Electromyogram (sEMG) signals finds several applications for developing prosthesis-based device control. However, sEMG signals can be corrupted by muscular activity from multiple sources at the site of acquisition, and hence the identification of intents from these signals presents a challenge. Moreover, there can be multiple intents which need to...
According to medical experts, haptic realism is difficult to achieve, and even more difficult to have inter-expert agreement on the haptic feedback of one simulation. However haptic feedback is important in medical training, and allows educators to share the forces felt during a procedure if they know and trust what a particular virtual simulator will provide to the trainee. A new approach is proposed...
Successful execution of biomechanical sit-to-stand (STS) task combines a forward thrust phase with an upward extension phase and stable movement termination. We have previously developed a fuzzy dynamic model to analyze the STS task by joining two local linear models, defined at the equilibrium positions, via Gaussian membership functions. The local linear models were obtained from a four-segment...
The mining industry has previously been regarded as a high risk job with safety being the primary concern. Over the years, procedures have been enforced in order to reduce these risks however muscular injuries are still occurring at a significant rate. An assistive technology known as Lift Augmentation Device(LAD) has been in use to reduce the impact on a workers body. This paper provides a musculoskeletal...
Recent research has demonstrated the negative impact of pupil dilation on iris recognition performance. Apart from light intensity changes, several factors such as alcohol, drugs, age, disease and psychology, are known to affect the size of the pupil. This work (1) analyzes the impact of drugs on pupil dilation, (2) proposes the use of a biomechanical nonlinear iris normalization scheme along with...
This paper describes the design and construction of a prosthetic knee external four-bar mechanism for pelvic limb amputations to transfemoral level. Making process from design and calculations of the software taking biomechanical parameters of a healthy knee; verifying and comparing the curves obtained with existing jobs.
In the rehabilitation training and assessment of upper limbs, the conventional kinematic model treats the arm as a serial manipulator and maps the rotations in the joint space to movements in the Cartesian space. While this model brings simplicity and convenience, and thus has been overwhelming used, its accuracy is limited, especially for the distal parts of the upper limb that execute dexterous...
The cartilage surface geometry of natural human hip joint is commonly regarded as sphere. It has been widely applied in computational simulation and hip joint prosthesis design. Some new geometry models have been developed and the sphere assumption has been questioned recently. The objective of this study was to analyze joint geometry effects on cartilage contact stress distribution and investigate...
In this paper, antagonistic robot joint which uses the Twisted String Actuator is developed. One axis robot joint is antagonistically driven by two Twisted String Actuators. This paper introduces the robot joint design and the performance of one axis robot. The position control is performed for antagonistic robot joint. The non-linearity of wire twist model causes the internal locking problem. The...
Glaucoma is the second leading cause for blindness. Irreversible and progressive optic nerve damage results when the intraocular pressure (IOP) exceeds 21 mmHg [1]. The elevated IOP is attributed to blocked fluid drainage from the eye. Methods to measure the IOP are widely available, but methods to measure the viscous response to blocked drainage has yet been developed. An indentation method to characterize...
While devices which allow scientists to perturb normal walking are becoming increasingly common, postural adaptations to these perturbations have not been fully quantified. One way to quantify postural responses to perturbations are through the assessment of variability of step length and width. In the present study we determined variability of both step length and width while subjects walked under...
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