31 research outputs found

    A Case Study on the Efficacy of STEM Pedagogy in Central New York State: Examining STEM Engagement Gaps Affecting Outcomes for High School Seniors and Post-2007 Educational Leadership Interventions to Reinforce STEM Persistence with Implications of STEM Theoretic Frameworks on Artificial Intelligence / Machine Learning

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    STEM (science, technology, engineering, and mathematics) has gained significant notoriety and momentum in recent years. STEM literacy highlights the vital connection between an educated STEM workforce and U.S. national prosperity and leadership. STEM educational and job placement goals have been a national priority for over the past 20 years. However, the STEM gap is widening—contributing to increasing STEM pipeline leakage and the social injustice milieu of a noncompetitive workforce— undermining efforts to create prosperity and sustain global leadership. The pace of STEM jobs filled lags the rate of technological advancement and the surges in skilled STEM labor demand. The aggregate disparity over time has troubling implications. The purpose of the study was to examine the STEM gap touchpoints for a Central New York high school during the transition period upon entering college or the workforce. A qualitative case study used Lesh’s translation model as a research framework. A semi-structured, focus group protocol was employed to gain a fresh perspective on the STEM gap problem and identify purposeful interventions. A major finding was the slow pace of adopting institutional reforms that replaces standardscompetency-based learning with progressive application- and outcome-based pedagogy. The study has implications for school districts, secondary schools, and higher education teacher preparedness programs in STEM pedagogy and curriculum development. A knowledge-based, progressive STEM theoretic framework with pedagogical scaffolding is conceptualized rooted in artificial intelligence and machine learning. The study presents recommendations for school districts, secondary education teachers, state education and legislative leaders, higher education institutions, and future research

    A Review of Resonant Converter Control Techniques and The Performances

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    paper first discusses each control technique and then gives experimental results and/or performance to highlights their merits. The resonant converter used as a case study is not specified to just single topology instead it used few topologies such as series-parallel resonant converter (SPRC), LCC resonant converter and parallel resonant converter (PRC). On the other hand, the control techniques presented in this paper are self-sustained phase shift modulation (SSPSM) control, self-oscillating power factor control, magnetic control and the H-∞ robust control technique

    OBSERVER-BASED-CONTROLLER FOR INVERTED PENDULUM MODEL

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    This paper presents a state space control technique for inverted pendulum system. The system is a common classical control problem that has been widely used to test multiple control algorithms because of its nonlinear and unstable behavior. Full state feedback based on pole placement and optimal control is applied to the inverted pendulum system to achieve desired design specification which are 4 seconds settling time and 5% overshoot. The simulation and optimization of the full state feedback controller based on pole placement and optimal control techniques as well as the performance comparison between these techniques is described comprehensively. The comparison is made to choose the most suitable technique for the system that have the best trade-off between settling time and overshoot. Besides that, the observer design is analyzed to see the effect of pole location and noise present in the system

    A Review of Resonant Converter Control Techniques and The Performances

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    paper first discusses each control technique and then gives experimental results and/or performance to highlights their merits. The resonant converter used as a case study is not specified to just single topology instead it used few topologies such as series-parallel resonant converter (SPRC), LCC resonant converter and parallel resonant converter (PRC). On the other hand, the control techniques presented in this paper are self-sustained phase shift modulation (SSPSM) control, self-oscillating power factor control, magnetic control and the H-∞ robust control technique

    State-Feedback Controller Based on Pole Placement Technique for Inverted Pendulum System

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    This paper presents a state space control technique for inverted pendulum system using simulation and real experiment via MATLAB/SIMULINK software. The inverted pendulum is difficult system to control in the field of control engineering. It is also one of the most important classical control system problems because of its nonlinear characteristics and unstable system. It has three main problems that always appear in control application which are nonlinear system, unstable and non-minimumbehavior phase system. This project will apply state feedback controller based on pole placement technique which is capable in stabilizing the practical based inverted pendulum at vertical position. Desired design specifications which are 4 seconds settling time and 5 % overshoot is needed to apply in full state feedback controller based on pole placement technique. First of all, the mathematical model of an inverted pendulum system is derived to obtain the state space representation of the system. Then, the design phase of the State-Feedback Controller can be conducted after linearization technique is performed to the nonlinear equation with the aid of mathematical aided software such as Mathcad. After that, the design is simulated using MATLAB/Simulink software. The controller design of the inverted pendulum system is verified using simulation and experiment test. Finally the controller design is compared with PID controller for benchmarking purpose

    URI Undergraduate and Graduate Course Catalog 2021-2022

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    This is a downloadable PDF version of the University of Rhode Island course catalog.https://digitalcommons.uri.edu/course-catalogs/1073/thumbnail.jp

    A Comparative Analysis of the Mechanisms of Social Inclusion for Hard of Hearing People in Germany and in the Russian Federation

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    Inklusion von Menschen mit Behinderungen ist zu einem der vordringlichen Ziele der Sozialpolitik der EuropĂ€ischen Union und in der Russischen Föderation geworden, u. a. aufgrund der zunehmenden Zahl von LĂ€ndern, die die UN-BRK1 ratifizierten, sowie Herausforderungen wegen, die eine "alternde" Gesellschaft verursacht. Jedoch werden Menschen mit Hörbehinderung und deren spezielle BedĂŒrfnisse im Vergleich zu anderen, eher sichtbaren Behinderungen, oft ĂŒbersehen. Das zentrale Anliegen der vorliegenden Untersuchung ist es, die Mechanismen und Ergebnisse der sozialen Inklusion schwerhöriger Menschen in Russland und Deutschland nĂ€her zu betrachten und zu vergleichen, sowie mit empirisch belegten Befunden zur Forschung ĂŒber schwerhörige Personen beizutragen. Der Forschungstand hierzu ist in den Disability Studies noch sehr lĂŒckenhaft. Eine Analyse der Sozial- und Behindertenpolitik in beiden LĂ€ndern sowie ein Vergleich der rechtlichen und institutionellen Maßnahmen als auch der Chancen bildet den Rahmen fĂŒr eine empirische Analyse (Fragebogen, Interviews mit schwerhörigen Personen, NGOs und Experten). Die EinschĂ€tzung der politischen Maßnahmen und der Infrastrukturen folgt den konzeptionellen und normativen BewertungsmaßstĂ€ben der Disability Studies. Die vergleichende Analyse konzentriert sich auf den Zugang schwerhöriger Menschen zu Bildung und Arbeitsmarkt, zu Wiedereingliederung, Information und Kommunikation – Bereiche welche fĂŒr Inklusion und Teilhabe entscheidend sind. Die empirischen Erhebungen enthalten explorative, nicht-reprĂ€sentative Fragebögen-Untersuchungen unter a) 190 jungen Befragten, 18-35 Jahre alt (davon 136 aus Deutschland; 150 aus Russland) b) 110 Ă€lteren Befragten, 65 bzw. 60 Jahre alt — abhĂ€ngig vom betreffenden Land — und Ă€lter (43 aus Deutschland; 67 aus Russland) und Experten-Interviews mit SchlĂŒsselpersonen zum Thema (Forscher, politische EntscheidungstrĂ€ger, medizinische und pĂ€dagogische Experten, schwerhörige NGO-Aktivisten); darĂŒber hinaus Leitfaden-Interviews mit schwerhörigen Personen (11 in Deutschland, 16 in Russland). Übereinstimmungen und Abweichungen in den nationalen politischen Richtlinien werden diskutiert, Beispiele von positiven Praktiken in medizinischer, ausbildungsbezogener und beruflicher Rehabilitation und potentielle politische Maßnahmen werden vorgeschlagen.Inclusion of people with disabilities has become one of the priorities of the social policy in the European Union and in the Russian Federation, in part, in connection with the increasing ratification of the UN CRPD worldwide and problems induced by the “ageing” society. However, people with hearing loss and their specific needs are often overlooked in comparison with more visible disabilities. The main purpose of this study is to look into and compare the mechanisms and results of social inclusion of hard of hearing people (HoH) in Russia and Germany and to contribute with empirically grounded findings to the research on hard of hearing people of which there is a lack in the disability research field. An analysis of the social and disability related policies in both countries and a comparison of the legal and institutional arrangements and opportunities provides the framework for the empirical analysis (questionnaire, interviews with HoH persons, NGOs and with experts). The appraisal of the policies and infrastructures is following the conceptual and normative benchmarks of the Disability studies. The comparative analysis is focused on access of HoH people to education and employment, to rehabilitation, information and communication – the fields critical to inclusion and participation. The empirical research comprises an explorative non-representative questionnaire survey with a) 190 young respondents aged 18-35 years (136 from Germany, 150 from Russia) b) 110 elderly respondents (65 or 60 years old and older; 43 from Germany, 67 from Russia), and expert interviews with the key persons in the field (researchers, political decision-makers, medical and educational professionals, hard of hearing NGO activists); furthermore, guided interviews with HoH people (N=11 in Germany, N=16 in Russia) were conducted. Commonalities and discrepancies in the national policy directions are discussed, examples of positive practices in medical, educational and professional rehabilitation and potential policy measures are suggested

    Real-Time Optimal Control Technique of A Rotary Inverted Pendulum System

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    This paper presents a real time control technique to stabilize inverted pendulum in the vertical upright position. Stabilize the inverted pendulum is a classical control problem that could be related to some problems in industrial applications. Two common problems that always been encountered by inverted pendulum system is unstable behavior and nonlinear. This lead to numerous studies on the control algorithm to balance the inverted pendulum system in the vertical upright position. Generally, inverted pendulum is mounted on DC motor and is equipped with sensor to measure angular displacement. Inverted pendulum has the same analogy with human that try to balance a broomstick using fingertip. Balancing the Inverted Pendulum requires a good control system. Therefore an optimal control technique is proposed to achieve desired design requirement which are less than 5% overshoot and less than 5 seconds settling time. The controller is optimized to achieve the best performance result. Finally the performance of the controller is compared with PID controller as a benchmark

    State-Feedback Controller Based on Pole Placement Technique for Inverted Pendulum System

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    This paper presents a state space control technique for inverted pendulum system using simulation and real experiment via MATLAB/SIMULINK software. The inverted pendulum is difficult system to control in the field of control engineering. It is also one of the most important classical control system problems because of its nonlinear characteristics and unstable system. It has three main problems that always appear in control application which are nonlinear system, unstable and non-minimumbehavior phase system. This project will apply state feedback controller based on pole placement technique which is capable in stabilizing the practical based inverted pendulum at vertical position. Desired design specifications which are 4 seconds settling time and 5 % overshoot is needed to apply in full state feedback controller based on pole placement technique. First of all, the mathematical model of an inverted pendulum system is derived to obtain the state space representation of the system. Then, the design phase of the State-Feedback Controller can be conducted after linearization technique is performed to the nonlinear equation with the aid of mathematical aided software such as Mathcad. After that, the design is simulated using MATLAB/Simulink software. The controller design of the inverted pendulum system is verified using simulation and experiment test. Finally the controller design is compared with PID controller for benchmarking purpose

    A SIMULATION STUDY OF STATE-FEEDBACK CONTROL METHOD FOR ELECTRO HYDRAULIC SERVO MODEL

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    Electro hydraulic servo system is used by many industries due to its ability to impart large forces. It also has advantage in term of fast response and robustness. The electro hydraulic system suffered from errors of the transient response which are steady state error, settling time and the ripples. It is crucial to design a controller for the system to ensure the reliability of the system. Aiming at the characteristic of the system, steady state feedback control method is designed to compensate the error. The analysis of the system is done based on the transient response specifically on the actuator part. MATLAB Simulink is used as the simulation software to evaluate the force performance of state feedback controller method. The steady state error, settling time and ripple are observed and recorded for each controller. Three methods is applied, which are full feedback, state feedback with feed forward and integral control are compared with proportional, integral and derivatives (PID) controller. The result of each controller shows the differences performance. Based on the simulation results, the feedforward technique is found to be the best control technique for the electro hydraulic servo system due to the requirement performance such as percent overshoot, settling time, rise time and zero steady state error. This good result will directly benefit industries that use electro hydraulic system as their actuator for production machines
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