Fred Discenzo - Academia.edu (original) (raw)

Papers by Fred Discenzo

IFAC Proceedings Volumes, Jul 1, 2004

This paper reports preliminary results of an ongoing research project that demonstrates distribut... more This paper reports preliminary results of an ongoing research project that demonstrates distributed architecture based on agents applied in the area of industrial automation. This architecture has been built to achieve the goals of improved survivability and readiness of US Navy shipboard systems. We show benefits of multiagent systems in the area where flexibility, survivability, and scalability are required. We present the architecture of multi-agent system, internal structure of agent, planning technique based on plan templates, fault-tolerant structure of middle-agents, and development environment for agents.

Kluwer Academic Publishers eBooks, Jan 3, 2006

Francisco ~a t u r a n a ' Raymond staron' Fred ~iscenzo' Kenwood k all' Pave1 ~i c h y Petr Slec... more Francisco ~a t u r a n a ' Raymond staron' Fred ~iscenzo' Kenwood k all' Pave1 ~i c h y Petr Slechta2 ~l a d i m i r ~a~i k~ David scheidt3 Michael pekala3 John ~r a c~~

ECS Meeting Abstracts, 2007

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IEE Colloquium Intelligent and Self-Validating Sensors, 1999

Torque signals are used today across a broad range of automation applications such as dynamometer... more Torque signals are used today across a broad range of automation applications such as dynamometer test stands and web process lines. Some of the drawbacks to using commercial torque transducers include their cost, reliability, and mechanical stiffness. It is possible to utilize an artificial neural network coupled with the photoelastic effect of many polymers to provide a small, low-cost torque sensor. The availability of low-cost torque sensing opens up many new applications that previously did not cost justify the investment in a commercial torque sensor. The sensor material has a high bandwidth which enables sampling high-frequency torque signals. High frequency torque signals are particularly useful for investigating machinery dynamics and for machinery health assessment.

IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society, Nov 1, 2016

To assess and validate the Smart Exercise Bike designed for Parkinson's Disease (PD) rehabili... more To assess and validate the Smart Exercise Bike designed for Parkinson's Disease (PD) rehabilitation, forty-seven individuals with PD were randomly assigned to either the static or dynamic cycling group, and completed three sessions of exercise. Heart rate, cadence and power data were captured and recorded for each patient during exercise. Motor function for each subject was assessed with the UPDRS Motor III test before and after the three exercise sessions to evaluate the effect of exercise on functional abilities. Individuals who completed three sessions of dynamic cycling showed an average of 13.8% improvement in the UPDRS, while individuals in the static cycling group worsened by 1.6% in UPDRS. To distinguish the static and dynamic cycling groups by biomechanical and physiological features, the complexity of the recorded signals (cadence, power, and heart rate) was examined using approximate entropy (ApEn), sample entropy (SaEn) and spectral entropy (SpEn) as measures of vari...

International Journal of Environmental Research and Public Health, 2022

Dance therapy can improve motor skills, balance, posture, and gait in people diagnosed with Parki... more Dance therapy can improve motor skills, balance, posture, and gait in people diagnosed with Parkinson’s disease (PD) and healthy older adults (OA). It is not clear how specific movement patterns during dance promote these benefits. The purpose of this cohort study was to identify differences and complexity in dance movement patterns among different dance styles for PD and OA participants in community dance programs using approximate entropy (ApEn) analysis. The hypothesis was that PD participants will show greater ApEn during dance than OA participants and that the unique dance style of tango with more pronounced foot technique and sharp direction changes will show greater ApEn than smoother dance types such as foxtrot and waltz characterized by gradual changes in direction and gliding movement with rise and fall. Individuals participated in one-hour community dance classes. Movement data were captured using porTable 3D motion capture sensors attached to the arms, torso and legs. Cl...

IEEE International Conference on Fuzzy Systems, Mar 28, 1993

The problem chosen for this work is the recognition of faces. The inability to recognize familiar... more The problem chosen for this work is the recognition of faces. The inability to recognize familiar faces is a common symptom in many Alzheimer's patients. The author describes an initial effort to develop a computer-based model of recall using artificial neural nets and fuzzy logic. The computer-based neural net model is then altered in a way suggested by the neuropathological findings in brain autopsies of senile dementia of the Alzheimer type (SDAT) patients. The ability of the computer model to correctly recognize images during a progressive alteration of the neural net is reported. The hope is that this model can serve as a tool to study the effects of SDAT on patients and possibly lend support to the early diagnosis of the disease.<<ETX>>

Medicine & Science in Sports & Exercise, 2015

IFIP International Federation for Information Processing

The research project MaBE aims at the development of agent-based middleware supporting cooperatio... more The research project MaBE aims at the development of agent-based middleware supporting cooperation in open business environments, based on real-world case studies concerning virtual enterprises. These case studies provide us with a library of scenarios of inter-and intra-organisational cooperation, which impose certain requirements to the construction of effective agent-based middleware platforms supporting such cooperation. However, existing FZPA compliant, agent construction frameworks are insufjcient to implement such agent-based middleware, as they cannot meet certain requirements imposed by the case studies. For example, the requirements involving dynamic handling of multiple and evolving ontologies, security and trust issues as well coordination in open environments cannot be directly addressed by current agent development tools and further research is required before building the appropriate middleware functionality supporting them. Since these issues are perceived as key enablers for open business collaboration, this paper provides an overview of the research undertaken to address them.

IFAC Proceedings Volumes, 2004

A prototype shipboard pumping system has been developed integrated with an Augmented Reality syst... more A prototype shipboard pumping system has been developed integrated with an Augmented Reality system. This system demonstrates how a service engineer can visually inspect a running system and "see" how the system is operating. In addition to stored, historical information, real-time data and analysis corresponding to the component the engineer is looking at can be viewed with the device. For example, the associated dynamic component data such as temperature, pump speed, flow rate, suction pre~~ure, discharge pressure, cavitation state, and lubricating oil contamination data are VISible. Cues are provided to the service engineer indicating potential problems and directing subsequent investigation.

Synthetic Membranes: Science, Engineering and Applications, 1986

The potential of membrane processes will be by far overestimated if only the transport properties... more The potential of membrane processes will be by far overestimated if only the transport properties of the membrane are taken into consideration. Concentration polarization and pressure losses in the module, i.e., the membrane arrangement, will result in sometimes much lower figures for capacity and product quality. Therefore, the first part of this chapter will discuss the major aspects which have to be considered in module design-based on the equations governing the local mass transport at and in the membrane. The next step will be a discussion of how modules have to be arranged in a process in order to achieve the desired result. The last part of this chapter will deal with the application of membrane processes, the economics of membrane processes compared with conventional separation techniques and with hybrid processes, i.e., the combination of a membrane process and a conventional separation process such as distillation.

Industry Applications Society 46th Annual Petroleum and Chemical Technical Conference (Cat.No. 99CH37000)

Smart motors are now being installed in critical applications. A brief description of smart motor... more Smart motors are now being installed in critical applications. A brief description of smart motors is provided along with how they may predict motor failure as well as driven equipment failure. This information may be transmitted from remote locations and provide a basis for effective condition-based maintenance strategies. Key technology developments in algorithms, sensors, and architectures are highlighted that will further propel the deployment of smart motors leading to improvements in operating costs, product quality, and asset management.

The Journal of the Acoustical Society of America, 2002

Machine vibration is essentially the forward and backward development of machines or machine segm... more Machine vibration is essentially the forward and backward development of machines or machine segments. Any segment that moves forward and backward or wavers is vibrating. Machine vibration can capture in different structures. All the more regularly, vibration is bothersome, squandering vitality and making the undesirable sound. Vibration investigation is an instrument to recognize, avert and anticipate disappointments in pivoting apparatus, for example, spiral boring machine, machine, and processing machine and so on. Actualizing vibration examination on these machines will enhance the unwavering quality of the machines and lead to all the more likely machine proficiency and diminished downtime disposing of mechanical or electrical part disappointments. Regular machines incorporate engines, siphons, fans, outfit boxes, blowers, turbines, transports, rollers, motors and mechanical devices having rotational components. The turning components of these machines produce vibrations at explicit frequencies that recognize the pivoting components capacities. In the present work, it is proposed to break down the vibration on spiral boring machine utilizing a piezoelectric sensor. Piezoelectric sensors are case mounted utilizing a perpetual jolt, convenient magnet or cement to hold them set up. They will gauge the vibration of the machine and deliver yield as a voltage or current corresponding to the vibration.

Journal of Sound and Vibration, 2007

Bearings are common and vital elements in rotating machinery. By tracking the condition of a bear... more Bearings are common and vital elements in rotating machinery. By tracking the condition of a bearing, unscheduled machinery outages and costly damage caused by a bearing failure can be avoided. In this paper, we developed a new scheme based on wavelet packet decomposition and hidden Markov modeling (HMM) for tracking the severity of bearing faults. In this scheme, vibration signals were decomposed into wavelet packets and the node energies of the decomposition tree were used as features. Based on the features extracted from normal bearing vibration signals, an HMM was trained to model the normal bearing operating condition. The probabilities of this HMM were then used to track the condition of the bearing. Experimental data collected from a bearing accelerated life test showed that unlike many of the other commonly used trend parameters whose distinguishing features diminished to normal bearing-like levels as the damage grew, the probabilities of the normal bearing HMM kept decreasing as the bearing damage progressed toward bearing failure. As the bearing approached the end of its life (10% of remaining life), the HMM probabilities dropped dramatically signaling severe damage and imminent bearing failure.

Medicine & Science in Sports & Exercise, 2020

Dance comprises a broad range of techniques and styles, which have been utilized in classes speci... more Dance comprises a broad range of techniques and styles, which have been utilized in classes specifically designed for individuals with Parkinson‘s disease (PD) and healthy older adults (OA). Previous studies have shown that a series of dance sessions can improve balance, posture, and gait for people diagnosed with PD and healthy older adults. However, these studies have not analyzed the features of body limb movement during dance. Sample Entropy (SamEn) analysis can be used to examine the complexity of movements in order to provide direction in the development of optimal dance interventions for these populations. PURPOSE: To identify dance movement patterns resulting in the greatest improvement in tests of gait, balance and upper extremity function using partnered and non-partnered dance to music in PD and OA. We hypothesize that entropy-driven variation in movement will enhance improvements in motor performance and that PD participants will show greater sample entropy during dance than OA participants. METHODS: Participants with and without PD participating in structured group dance classes were recruited for this study. Motion capture was used to examine movement patterns and sample entropy analysis was used to calculate the complexity of movements during dance. RESULTS: Participants with PD had a greater spread of SamEn in left hip abduction during tango movements than right hip abduction (p < 0.0001). A greater SamEn in right hip rotation during tango movements than left hip rotation (p < 0.0001) was seen during tango but no significant difference during foxtrot. Furthermore, PD group had no significant difference in left/right knee flexion SamEn during tango but left knee flexion SamEn was higher during foxtrot than right knee flexion SamEn (p = 0.006). OA participants saw a much smaller, but still significant, spread in SamEn in left hip abduction during Tango than right hip abduction (p = 0.002), with no significant difference in hip rotation SamEn. CONCLUSION: We interpret our entropy results as showing a decrease in PD left hip abduction control compared to the right hip during tango. Our PD participants reported that the left side was more affected. These types of data could be used to optimize dance interventions in regards to dance type, music beat/rhythm in order to improve limb control.

Medicine & Science in Sports & Exercise

There is a rapid increase in the deployment of wireless devices for industrial and commercial app... more There is a rapid increase in the deployment of wireless devices for industrial and commercial applications. Wireless devices are being used for applications such as security, surveillance, process monitoring, and machinery condition monitoring. Although the wiring costs for communications and power cables are eliminated with wireless devices, these costs are replaced with the ongoing cost of battery maintenance.

Packaged piezoelectric bi-morph actuators offer an alternative power source for health monitoring... more Packaged piezoelectric bi-morph actuators offer an alternative power source for health monitoring using localized vibrational power harvesting. Packaging piezoelectric wafers simplify the integration of piezoelectric ceramic wafers into products and improve the ...