Department of Electrical & Computer Engineering, Portland State University, Portland, OR, USA - Articles

Designing Equity Option Strategies Using Memetic Algorithms (Articles)

Richard Tymerski, Garrison Greenwood

Technology and Investment Vol.9 No.4，October 26, 2018

DOI: 10.4236/ti.2018.94013 1,181 Downloads 3,129 Views Citations
Differential Evolution Optimization of the Broken Wing Butterfly Option Strategy (Articles)

David Munoz Constantine, Richard Tymerski, Garrison Greenwood

Technology and Investment Vol.11 No.3，June 30, 2020

DOI: 10.4236/ti.2020.113003 906 Downloads 4,781 Views Citations
Design and Control of an Alternative Buck PWM DC-to-DC Converter (Articles)

Justin Simmons, Richard Tymerski

Journal of Power and Energy Engineering Vol.9 No.6，June 28, 2021

DOI: 10.4236/jpee.2021.96004 616 Downloads 3,272 Views Citations
Quantum Algorithm for Mining Frequent Patterns for Association Rule Mining (Articles)

Abdirahman Alasow, Marek Perkowski

Journal of Quantum Information Science Vol.13 No.1，March 31, 2023

DOI: 10.4236/jqis.2023.131001 217 Downloads 1,393 Views Citations
One Hot Encoding Synthesis of Quantum Automata from Flowcharts (Articles)

Yuchen Huang, Marek Perkowski

Journal of Quantum Information Science Vol.13 No.3，September 20, 2023

DOI: 10.4236/jqis.2023.133009 162 Downloads 575 Views Citations
Erratum to “Quantum Algorithm for Mining Frequent Patterns for Association Rule Mining” [Journal of Quantum Information Science 13 (2023) 1-23] (Articles)

Abdirahman Alasow, Marek Perkowski

Journal of Quantum Information Science Vol.14 No.2，June 28, 2024

DOI: 10.4236/jqis.2024.142005 91 Downloads 393 Views Citations
LQR Discrete Time Control of a Buck Converter Using a Non-Minimal State Space Representation (Articles)

Richard Tymerski

Journal of Power and Energy Engineering Vol.13 No.1，January 26, 2025

DOI: 10.4236/jpee.2025.131003 41 Downloads 193 Views Citations
Optimizing Pole Placement Strategies for a Higher-Order DC-DC Buck Converter: A Comprehensive Evaluation (Articles)

Richard Tymerski

Journal of Power and Energy Engineering Vol.13 No.1，January 26, 2025

DOI: 10.4236/jpee.2025.131004 65 Downloads 297 Views Citations
Continuous Variable Quantum MNIST Classifiers
—Classical-Quantum Hybrid Quantum Neural Networks (Articles)

Sophie Choe, Marek Perkowski

Journal of Quantum Information Science Vol.12 No.2，June 23, 2022

DOI: 10.4236/jqis.2022.122005 422 Downloads 2,473 Views Citations
Exact Dynamic Modeling of PWM DC-to-DC Power Converters—Part I: Continuous Conduction Mode (Articles)

Justin Simmons, Richard Tymerski

Journal of Power and Energy Engineering Vol.9 No.5，May 22, 2021

DOI: 10.4236/jpee.2021.95002 384 Downloads 1,754 Views Citations
This article belongs to the Special Issue on Advanced Power Electronic Converters, Control and Modelling Techniques for Renewable Energy Systems
Exact Dynamic Modeling of PWM DC-to-DC Power Converters—Part II: Discontinuous Conduction Mode (Articles)

Justin Simmons, Richard Tymerski

Journal of Power and Energy Engineering Vol.9 No.5，May 22, 2021

DOI: 10.4236/jpee.2021.95003 343 Downloads 1,213 Views Citations
This article belongs to the Special Issue on Advanced Power Electronic Converters, Control and Modelling Techniques for Renewable Energy Systems
The Subtleties of Social Exclusion: Race, Social Class, and the Exclusion of Blacks in a Racially Mixed Neighborhood (Articles)

Daniel Monroe Sullivan, Jonathan Picarsic

Sociology Mind Vol.2 No.2，April 17, 2012

DOI: 10.4236/sm.2012.22020 5,884 Downloads 10,091 Views Citations
Strain Energy Release from the 2011 9.0 Mw Tōhoku Earthquake, Japan (Articles)

Kenneth M. Cruikshank, Curt D. Peterson

Open Journal of Earthquake Research Vol.2 No.4，November 20, 2013

DOI: 10.4236/ojer.2013.24008 4,210 Downloads 9,659 Views Citations
From Food Desert to Food Mirage: Race, Social Class, and Food Shopping in a Gentrifying Neighborhood (Articles)

Daniel Monroe Sullivan

Advances in Applied Sociology Vol.4 No.1，January 23, 2014

DOI: 10.4236/aasoci.2014.41006 6,502 Downloads 12,517 Views Citations
Hydrogeology of Pumice-Hosted Fens in the Winema-Fremont National Forest, Oregon, USA (Articles)

Michael L. Cummings, Jonathan M. Weatherford, Leslie A. Mowbray

Journal of Water Resource and Protection Vol.6 No.19，December 30, 2014

DOI: 10.4236/jwarp.2014.619158 3,552 Downloads 4,456 Views Citations
This article belongs to the Special Issue on Groundwater Research
Ground- and Surface-Water Interactions of a Pumice Aquifer in a Headwaters Watershed: Round Meadow, Fremont-Winema National Forest, Oregon, USA (Articles)

Jonathan M. Weatherford, Michael L. Cummings

Journal of Water Resource and Protection Vol.8 No.11，October 26, 2016

DOI: 10.4236/jwarp.2016.811081 1,592 Downloads 2,749 Views Citations
Late Stage Interseismic Strain Interval, Cascadia Subduction Zone Margin, USA and Canada (Articles)

Kenneth M. Cruikshank, Curt D. Peterson

Open Journal of Earthquake Research Vol.6 No.1，February 16, 2017

DOI: 10.4236/ojer.2017.61001 1,918 Downloads 3,671 Views Citations
Thermal Performance of MR-16 Light Emitting Diode Products (Articles)

Michael Beck, Heather Dillon, Belinda Li

Journal of Electronics Cooling and Thermal Control Vol.6 No.4，October 11, 2016

DOI: 10.4236/jectc.2016.64012 1,775 Downloads 2,813 Views Citations
Performance and Optimization of a Small Hybrid Solar-Thermal Collector (Articles)

Amy Lebar, Heather E. Dillon

Smart Grid and Renewable Energy Vol.9 No.12，December 28, 2018

DOI: 10.4236/sgre.2018.912016 1,223 Downloads 2,821 Views Citations
Modeling Currency Flow in an Economy: The Case of India’s Demonetization in 2016 (Articles)

Frederick Betz, Timothy R. Anderson, Aurobindh Kalathil Puthanpura

Theoretical Economics Letters Vol.7 No.4，June 22, 2017

DOI: 10.4236/tel.2017.74068 1,520 Downloads 3,561 Views Citations

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