Papers by Wilfrido Moreno
A Pathway to Real-Time Wellness Digital Twins for Precision Wellness Monitoring
2022 IEEE International Symposium on Smart Electronic Systems (iSES)
The Dire Consequences of Enforcing Academic Dishonesty Policies at the ‘Output of the Student’s Formation Process’: Lessons Learned from Control Systems
We all seem to know how to cover gaps and correct when a student’s unethical situation is already... more We all seem to know how to cover gaps and correct when a student’s unethical situation is already present, but very few know how to apply the correctives by timely finding the causes and therefore not allowing for the detrimental impact on the student’s academic experience when unethical policies are applied to their fullest consequences
Nucleation and Atmospheric Aerosols, 2001
An automatic scanning ultrasonic transmission (UST) technique was developed and applied to nondes... more An automatic scanning ultrasonic transmission (UST) technique was developed and applied to nondestructive metrology and analysis of visco-elastic properties in full-size chemical mechanical planarization (CMP) pads prior to their use in CMP processing. The system is comprised of a specially designed ultrasonic transmitter as an emitter of acoustic vibrations and an ultrasonic probe as a receiver. Both, the transducer and the probe are positioned on the moving X-Z stage, while the circular pad is attached to a rotary motor. The probe is aligned with the center of the transmitter and measures with high accuracy and repeatability the amplitude of the transmitted ultrasonic vibrations through the pad at a pre-selected depth in the pad in the contact mode or at a certain elevation above the surface using non-contact mode. The UST system is computer controlled and fully automated. Inhomogeneity of commercial pads with a diameter up to 32" were revealed and analyzed. Typical UST map exhibits almost regular stripes of high and low acoustic transmission, which are superimposed with global inhomogeneity where the UST amplitude changes circumferentially. Aside from the UST mapping, the system allows for the study of visco-elastic behavior of pad components using UST transient curves.
A Tutorial Approach to Small Unmanned Helicopter Controller Design for Non-aggressive Flights
Springer eBooks, Feb 25, 2008
Unmanned helicopters are being widely used in a multitude of applications, mostly military, as we... more Unmanned helicopters are being widely used in a multitude of applications, mostly military, as well as civilian. Their usefulness and applicability results from their ability to fly in very low altitudes, hover, cruise, take off and land almost everywhere, executing missions that require aggressive and non-aggressive flight scenarios.
Neuro-oncology, Nov 1, 2022
NEURO-ONCOLOGY • November 00 validation of classification accuracy, we conducted a comprehensive ... more NEURO-ONCOLOGY • November 00 validation of classification accuracy, we conducted a comprehensive validation strategy. Both nanopore platforms could sequence more than 5,000 pre-selected CpG within less than 20 minutes for most of our samples. When combining an optimized library preparation protocol with the time used for sequencing the minimal number of CpGs needed for classification, we saw sample-to-answer times of less than 1 hour-in many cases within 45 minutes-from receiving a fresh biopsy to a robust cancer type prediction. Comparing actual and predicted diagnoses resulted in a favorable error rate, indicating potentially highly clinical validity. Our real-time based molecular diagnostic algorithm enables, in most cases, a reliable diagnostic call within the timeframe of a typical neuro-oncological surgery. MethyLYZR as a predictive tool may allow us to adjust the surgical strategy and deliver the prognosis to our patients right after surgery, thus allowing for as-of-yet unexplored opportunities for the intraoperative application of individualized therapeutic modalities.
Control Fundamentals of Small / Miniature Helicopters - A Survey
Springer eBooks, Feb 25, 2008
Miniature helicopters are increasingly used in military and civilian applications, mainly due to ... more Miniature helicopters are increasingly used in military and civilian applications, mainly due to their ability to hover, fly in very low altitudes and within confined spaces. However, due to model nonlinearities and inherent instabilities, low-level controller design for autonomous flights is a challenge. This Chapter presents an overview of major accomplishments in the area of unmanned helicopter control by several research groups, and focuses on techniques used for low-level control. It then describes a general model suitable for small or miniature helicopter non-aggressive flights and compares three different controllers, a PID, a Linear Quadratic Regulator (LQR) and an H 8 controller in terms of their practical implementation to achieve autonomous, self-governing flights.
Biomedical Signal Processing and Control, Mar 1, 2017
Monitoring the well-being of a fetus through Fetal Phonocardiography (FPCG) has been occurring fo... more Monitoring the well-being of a fetus through Fetal Phonocardiography (FPCG) has been occurring for more than a century. Throughout history, there have been continuous advances in sensor development, data acquisition systems, and signal processing techniques. Despite these advancements, FPCG based point of care technologies are facing serious challenges in translating from basic research to clinical trials and commercialization. This is partly due to the noisy characteristic associated with FPCG, to the lesser clinical knowledge about fetal and maternal physiological profiles, to the unavailability of gold standard databases, and to the limited application of reliable signal processing techniques. In order to understand why FPCG continues to be underutilized, it is necessary to know about the existing standards of fetal monitoring, data collection trends, and the signal processing aspects. To serve this purpose, this paper will first provide an overview of the existing standards of fetal monitoring and then provide a comprehensive survey on Fetal Phonocardiography with focus on trends in data collection, signal processing techniques and synthesis models that have been developed to date. Finally, a set of guidelines will be proposed for future research and use in signal analysis, processing and modeling based on the outlined challenges.
T2-E: Systems Engineering Framework to Design a Laboratory Course: A Case Study
This manuscript introduces a Systems Engineering (SE) framework to design a state-of-the-art engi... more This manuscript introduces a Systems Engineering (SE) framework to design a state-of-the-art engineering laboratory course. In order to illustrate the developed framework, results from an implemented undergraduate embedded systems laboratory course are being presented as a case study. The Concept of Operations was developed for the lab design to bridge the gap between skillset required by the industry and the learning objectives defined by the academic program. This was accomplished by preparing the students with a skillset that would facilitate their smooth transition from the academic program to the industry. Following the SE framework, industry ready skills were identified based on the survey carried out from the TRUE (Taking Responsibility to Understand Engineering) Partners of the Electrical Engineering (EE) Department at the University of South Florida (USF). The course design requirements were then identified based on the needs of the stakeholders: the industry; the students; and the EE department of USF. Further, the course was implemented through CANVAS, a learning management system, by incorporating innovative instructional interventions. The case study is being verified and validated by presenting the results of the course exit survey and metrics such as grade point averages, enrollment, retention and completion rates; the trends of the results show that the students were able to grasp the presented technical material with ease. In addition, the results also indicated that maximum learning experience was accomplished due to the incorporation of instructional interventions like spacing and interleaving, pair programming, online lectures, active and social learning, into the course design. Finally, it can be seen that a SE approach is very effective not only in maximizing the student learning experience but also in meeting the ever-changing skillset requirement of the industry
Valavanis. I thank them for their direction, support and for creating the ideal research environm... more Valavanis. I thank them for their direction, support and for creating the ideal research environment. The environment they have created for their students possessed all the challenges, freedom and resources required for completion of my research. They complemented each other perfectly. During this research endeavor, I had the privilege of working with Dr. Miguel Labrador. Dr. Labrador always provided important insight and guidance. In his subtle and expert manner he showed me the beauty of academic rigor and good scientific practices. I also thank the other members of my committee. Dr. James Leffew and Dr. Fernando Falquez read my documentation and provided important feedback from the time of my research proposal until the completion of this dissertation. I must also extend by deep appreciation to my fellow Master and Doctoral students. With these people I worked on projects, performed experiments, wrote papers and engaged in discussions. If it could only be true that such enjoyable pursuits will comprise the rest of my professional life. They have all become dear friends to me.
IEEE Transactions on Semiconductor Manufacturing, Nov 1, 2005
Chemical-mechanical planarization is a critical abrasive process in the production of semiconduct... more Chemical-mechanical planarization is a critical abrasive process in the production of semiconductor devices used for polishing the surface of wafers. The characterization of an IC wafer-polishing pad, in terms of its density, is crucial for planarization efficiency. Most of the currently available procedures for pad characterization are typically destructive in nature. This paper, however, demonstrates through statistical design of experiments the effectiveness of ultrasound technology to analyze the underlying pad structure in a nondestructive regime. Moreover, the impact that physical factors such as temperature and humidity could have on the structure and the ultrasonic characterization of the pad are studied. The results from a single factor and a multifactor analysis of the different sections of the pad are discussed.
FIB and E-beam cross-linked poly(N-isopropylacrylamide) patterning for BioMEMS/NEMS
Two techniques, focused ion beam patterning, (FIB), and electron-beam lithography, (E-beam), for ... more Two techniques, focused ion beam patterning, (FIB), and electron-beam lithography, (E-beam), for micron and submicron patterning of cross-linked poly(N- isopropylacrylamide) films are presented. Both techniques generate well-defined patterns that retain their thermo-responsiveness. However, only FIB patterning combined with soft lithography offers independent control over cross-link density and feature-size resolution. In order to demonstrate the use of E-beam lithography a series of "smart" trenches were fabricated, which could be exploited for BioSamples capture and release mechanisms for BioMEMS/NEMS sample processing.
Research and Education Network for the America's Region, (RENAR): ISTEC'S Micro/Nano systems Mobile Training Program, (MTP)
The purpose of this paper is to present a research and education network that will help the acade... more The purpose of this paper is to present a research and education network that will help the academic community of the America's region to improve their device-processing skills and characterization via ISTEC's micro/nano systems mobile training program, (MTP). This hands-on program is designed to eliminate the barriers between engineering students and advanced-equipped research facilities. ISTEC's MTP will have a significant
Design and fabrication of reconfigurable metamaterial devices using MEMS
Proceedings of SPIE, Aug 15, 2011
ABSTRACT This work presents the design, fabrication and characterization of Metamaterial (MTM) st... more ABSTRACT This work presents the design, fabrication and characterization of Metamaterial (MTM) structures using MEMS technology for applications in bio-medical optics. Metamaterials can be applied in diverse fields such as Photonic Crystals, Resonant Structures and Transmission Lines. In this work the focus is on Transmission Lines. For this application, the metamaterial structure is based on a Composite Right/Left Handed Transmission Line (CRLH-TL) which consists of MEMS capacitors and inductors. The MEMS capacitor is formed with two parallel plates (two electrodes, one mobile-positive and one fixed-negative), whose capacitance can be varied using electrostatic principles; in addition it acts as a 3D element for metamaterial device tuning.
Revista Tecnología en Marcha
With fast-paced digital transformation, precision medicine has been an essential part to elevate ... more With fast-paced digital transformation, precision medicine has been an essential part to elevate the conscience of healthcare with respect to the biopsychosocial model with the help of Remote Patient Monitoring Systems. Digital twins have been successful in many industries, in healthcare, it can optimize the wellness of the human body to improve physical and mental wellness including the non-diagnosed diseased populations and rural populations. In this paper, we discuss the challenges in terms of computing to implement a complex system called Wellness Digital Twin-based Remote Patient Monitoring System following Model-Based Systems Engineering (MBSE), we present the definition, needs of the digital twin in the context of wellness and healthcare, a feasibility study followed by a concept of operations. Subsequently, we present the requirements and architecture including In-memory computing, (Emerging NonVolatile Memories, memristive devices) that will enhance sensing, analytics, an...
Calculation of Irradiance from Illuminance for Artificial Light Photovoltaics Applications
IEEE Instrumentation & Measurement Magazine
IEEE Access
Numerous sources provide methods to extract photovoltaic (PV) parameters from PV module datasheet... more Numerous sources provide methods to extract photovoltaic (PV) parameters from PV module datasheet values. The inputs are the number of series cells N s , open circuit voltage V oc , maximum power voltage V mp , maximum power current I mp , and short circuit current I sc. The 5 Parameter Model solutions outputs are diode ideality factor η, series resistance R s , parallel resistance R p , photon light current I L , and diode reverse saturation current I o. The parameter solution requires solving three simultaneous transcendental equations for η, R s , and R p and additional calculations for I L and I o. One of the primary tenants of Systems Engineering, verification, was applied to parameter solution results to check for physical and model fitness. This manuscript provides novel methods to verify parameter results and applies them to available solutions.
Efficient Signaling for Passive Memristive Crossbars to Prepare them for Spiking Neuromorphic Computing
2022 IEEE Latin American Electron Devices Conference (LAEDC)
False Glitch Cells as a Countermeasure Against Power Analysis Attacks in Cryptographic Circuits
2019 SoutheastCon, 2019
Cryptographic systems can potentially suffer from various attacks which are a consequence of vuln... more Cryptographic systems can potentially suffer from various attacks which are a consequence of vulnearability of side channel information to analysis attacks. The nature of digital circuits is prone to electromagnetic and power analysis (EMA and PA) attacks. Interconnects in cryptographic circuits emanate information through electromagnetic signals which can be exploited using EMA. Complementary Metal Oxide Semiconductor (CMOS) circuits are vulnearable to leak of computational information through leakage and dynamic power consumption. Dynamic power consumption of cryptographic engines is a rich source to sink in the data under process. The hardware implementation of cryptographic algorithms undermine the security of encrypted system against non brute-force-attacks. The attackers collect and analyse the leakage information of cryptographic circuits to detect the secrete key. The parameters sensitivity of the device and circuits make the cryptographic engines vulnearable to fault injection and inherent inconsistency of the circuits. Dynamic and static power comprise two major components of power consumption of digital circuits. Both power components vary with data under process. This exhibits power consumption has data dependency in digital circuits. To make noisy power profile, various countermeasures have been proposed against Differential Power Analysis (DPA) attacks. In this research, false glitch cells is proposed to work as a countermeasure to generate random transitions and power spikes to scramble power profile. The mathematical foundation of security implications of false glitch cells against Correlation Power Analysis (CPA) attacks is investigated. Moreoever, the security efficiency of utilizing false glitch cells is verified with different metrics.
Mathematical model for glitch power consumption to study its implication on power analysis attacks
2018 IEEE 9th Latin American Symposium on Circuits & Systems (LASCAS), 2018
Side channel information is a major threat against cryptographic circuits. Since cryptographic al... more Side channel information is a major threat against cryptographic circuits. Since cryptographic algorithms are implemented on microprocessors or custom hardware, the attackers easily can exploit the side channel information from the chip to detect the secret key. The power consumption in digital circuits consists of two major components: switching power consumption and leakage power consumption. Both power components in digital circuits have data dependency, while, the switching power consumption has more data dependency than leakage power. Most of the switching power consumption belongs to dynamic power consumption. Unfortunately, the lack of mathematic model to formulate the glitch power consumption has led to uncertain strategy about the impact of glitch power consumption on cryptographic circuits. This paper proposes a glitch power model in combination with discrete time power consumption to make concrete mathematic framework. This framework can be exploited to investigate the impact of glitch power consumption on security of cryptographic circuits.
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Papers by Wilfrido Moreno