Digital Commons Network^™

Robust Load Frequency Control For Multiarea Electrical Power Systems Via Analytical Proportional-Integral-Derivative Plus Second Order Derivative Controller Design, Yavuz Güler, Mustafa Nalbantoğlu, Ibrahim Kaya

Turkish Journal of Electrical Engineering and Computer Sciences

This research presents a proportional-integral-derivative plus second order derivative (PIDD2) controller design based on the Direct Synthesis Method (DSM) for load frequency control (LFC) of interconnected power systems. The parameters of the proposed PIDD2 controller are determined using the DSM, which offers an analytical approach for tuning. The design approaches have been developed specifically for single, two, and three-area power systems, encompassing nonreheated and reheated thermal turbines. In the proposed design method, the best values of PIDD2 controller parameters were found by using a multicriteria objective function that includes the integral of absolute error (IAE) and settling time. In response …

A Binary Multiobjective Hippopotamus Optimization Algorithm For Feature Selection In Phishing Website Detection, Fatima Belmessaoud, Sofiane Maza, Djaafar Zouache

Turkish Journal of Electrical Engineering and Computer Sciences

Phishing website detection remains a major challenge in cybersecurity as attackers continuously develop new techniques to deceive users. Identifying the most informative features from large datasets is essential to improve classification accuracy while reducing computational complexity. Feature selection is therefore widely addressed using metaheuristic optimization techniques due to their flexibility and global search capability. In this study, we propose a Binary Multiobjective Hippopotamus Optimization Algorithm (B-MOHOA) for feature selection in phishing website detection. The proposed method simultaneously optimizes two conflicting objectives: maximizing classification accuracy and minimizing the number of selected features. Unlike many existing studies that mainly focus on transfer …

Range–Angle-Dependent Oam Beamforming With A Concentric Helical Circular Fda, Uğur Yeşi̇lyurt

Turkish Journal of Electrical Engineering and Computer Sciences

Secure and spatially selective wireless transmission requires orbital angular momentum (OAM) beams that are confined to a specific range and angle, rather than propagating indefinitely along the beam axis. In this paper, a concentric helical circular frequency diverse array (CHCFDA) is proposed to generate range–angle-dependent OAM beams without requiring external phase shifters. The helical element positioning inherently provides the necessary interelement phase distribution through physical step height, while logarithmically increasing frequency offsets are applied across concentric rings—and optionally across individual elements—to eliminate range periodicity and achieve a single, well-focused OAM beam exclusively at the target location. Both linear and logarithmic …

Measurement-Aware Zero-Phase Iterative Learning Control For Robust Regulation Of Nonideal Boost Converters In Electric Vehicle Fast Charging, Aytaç Altan, Mohammed S. Alzaidi, Cağfer Yanarateş

Turkish Journal of Electrical Engineering and Computer Sciences

Integrating battery energy storage with DC-DC boost converters for electric vehicle fast charging exposes the regulator to ageing-induced parameter drift, periodic load pulses, and, critically, the nonidealities in the output-voltage sensing chain. This paper proposes a measurement-aware, zero-phase iterative learning control scheme for robust output-voltage regulation of a nonideal boost converter whose parameters are matched to those of a commercial Texas Instruments TPS6102x battery regulator. The controller combines an inner proportional-integral stabilizing loop with an outer zero-phase learning law that updates a feedforward correction based on the sensor-captured output trajectory; a forward-backward robustness filter suppresses the amplification of measurement noise …

Research And Innovation Update, September 17, 2026, Office Of The Vice President For Research And Innovation

Office of Research, Economic Engagement and Outreach

No abstract provided.

"The Courtview Diary", William Lindsey Mcdonald

Research Articles

The article offers an excerpt and overview of the diary of Sally Independence Foster, a young girl from Florence, Alabama who recorded her experiences during the Civil War. Foster lived in Courtview, now known as Rogers Hall on the campus of the University of Alabama. Additional photographs of Courtview (Rogers Hall) are available in the University Architecture and William Lindsey McDoanld Image Collections by searching the side bar located on the left.

Additional information about Sally Independence Foster, can be found in this LibGuide, the digital archival collection, or the finding aid to the physical collection.

"The Builder Of Wilson Dam", William Lindsey Mcdonald

Research Articles

The article presents a brief overview of the people responsible for the construction of Tennessee Valley Authority Dam Number Two, later known as the Wilson Dam. The dam was designed by C. M. Hackett, while a team of engineers directed by General Lansing H. Beach oversaw the project's construction. McDonald places particular emphasis on district engineer Col. Hugh L. Cooper, "a self-educated engineer in hydroelectric energy" whom he recognizes as the "builder" of the Wilson Dam.

"Deibert Park: A Place Of Beauty And Legacy", William Lindsey Mcdonald

Research Articles

The article discusses the history of Deibert Park and the benefactors Dr. Kirk and Lillian Deibert. The Deibert Park historical marker can be found in the national historical marker database.

McDonald recounts the history of the historic African American Posey Community that the Florence, Alabama park is located in.

"Brandon School", William Lindsey Mcdonald

Research Articles

The Brandon School was established in the East Florence industrial area of Florence, Alabama in 1893 as Florence's Sixth Ward School. Due to lack of funds, the school was closed before being reopened by Charles Brandon, a proponent of educational efforts among the children of factory workers of the Cherry Cotton Mill.

Photographs of the Brandon School's faculty and second and third grade classes are available in the William Lindsey McDonald Image Collection.

"Building The Bridge", William Lindsey Mcdonald

Research Articles

After the Civil War, the reconstruction of the Florence, Alabama railroad bridge proved vital to local commerce. William Lindsey McDonald briefly describes the ferries used prior to the construction of the bridge as well as the infrastructural significance.

"The Blockade Runner", William Lindsey Mcdonald

Research Articles

During the Civil War, Mary Nail Blair of Florence, Alabama organized a secret operation to bring essential supplies into Florence and the surrounding area from behind enemy lines.

"Celts In The Valley", William Lindsey Mcdonald

Research Articles

The Tennessee Valley of North Alabama retains linguistic and cultural influences from the languages of its inhabitants. Scot Irish inhabitants of Celtic origin produced a dialect that McDonald claims as a "Celtic character" through tracing common regional expressions back to their roots in the original Gaelic.

"Chief Tuscumbia", William Lindsey Mcdonald

Research Articles

Chief Tashka Ambi, or Tashkambia, meaning "the warrior who kills," was a Chickasaw chief in North Alabama. The article offers a brief overview of Chief Tashkambia's life.

The name for the present-day city of Tuscumbia, Alabama is derived from the anglicized version of his name. The city's first name Cold Water was incorporated on December 20, 1820, then six months later it was changed to Big Spring, before retaining its present name on December 31, 1822.

"The Civil War Years At Florence And Lauderdale County", William Lindsey Mcdonald

Research Articles

The article is organized by headings and presents a brief overview of the effects of the Civil War in Florence and Lauderdale County, Alabama.

Headings

• Gunboats at the Florence Port
• Florence Bridge over the Tennessee Burned
• Local Presbyterian Minister Sent to Union Prison
• The First Battle of Florence
• General William T. Sherman Occupies Florence
• Battle of Center Star
• Capture of the White Horse Company
• The Two Skirmishes at Four Mile Branch
• Second Battle of Florence
• Federal Cavalry Encampment Near Florence
• A Civil War Medical Center

"Early Times Around Muscle Shoals City", William Lindsey Mcdonald

Research Articles

A paper presented to the Muscle Shoals City Kiwanis Club on March 14, 1963, about the establishment of the city of Muscle Shoals. The article includes mention of the indigenous tribes that dwelt in the area as well as the Marion Land Company and associated figures which advertised lots in 1819.

"The Early Beginnings Of Weeden Heights", William Lindsey Mcdonald

Research Articles

Weeden Heights, a subdivision development east of Florence, Alabama on Old Huntsville Road, was named for John D. Weeden Jr. The origins of the development are briefly discussed in the article.

"The Early Development Of Florence", William Lindsey Mcdonald

Research Articles

The city of Florence, Alabama was officially founded on March 12th, 1818, with the signing of the Articles of Agreement in Huntsville, Alabama. The article briefly discusses the founding of the city, including the impact of Generals Andrew Jackson and John Coffee, as well as the development of integral roads, such as Circular and Military Road.

"The Early History Of Lauderdale County", William Lindsey Mcdonald

Research Articles

Lauderdale County was created as one of eight county governments on February 6, 1818, making it approximately one year older than the state of Alabama. The article discusses the early founding of the county, including setter encounters with indigenous people and conflicts.

"Florence Wagon Works", William Lindsey Mcdonald

Research Articles

In 1889, the Atlanta Wagon Works relocated their plant to Florence, Alabama in order to be able to access the timber of the Appalachian foothills. The article offers an overview of the Florence Wagon Works and the impact of the industry.

"Florence Wesleyan University: 1855-1872", William Lindsey Mcdonald

Research Articles

A paper presented by William Lindsey McDonald, Conference Historian, at the North Alabama Conference for the United Methodist Church about Florence Wesleyan University, one of the earliest predecessors of the University of North Alabama. Prior to discussing Florence Wesleyan University, the paper also discusses the history of the earliest iteration of the university LaGrange College.

"Florence's First Mayor", William Lindsey Mcdonald

Research Articles

The article briefly discusses the significance of Alexander Hamilton Wood, the first mayor of Florence, Alabama.

"The Canal Building Genius", William Lindsey Mcdonald

Research Articles

George Washington Goethals, the engineer who constructed the Panama Canal, was also employed to construct the Muscle Shoals Canal in North Alabama. During the construction of the canal, Goethals lived on Wood Avenue near the University of North Alabama. Multiple historical markers commemorating Goethals' time in North Alabama exist, including the one designating his home, the Florence Walk of Honor, and his mention on the Muscle Shoals Canal Marker.

"The Course Of The Tennessee River", William Lindsey Mcdonald

Research Articles

The article describes the usual course of the Tennessee River and various geological theories for the direction of its course. In addition, it explores the specific geomorphology of the Muscle Shoals and its impact on North Alabama.

"Eliza Coffee Whose Name Is Memorialized By A Hospital", William Lindsey Mcdonald

Research Articles

The article serves as a brief biographical sketch of Eliza Coffee, whom the Eliza Coffee Memorial Hospital in Florence, Alabama memorializes.

"Dr. E. B. Norton", William Lindsey Mcdonald

Research Articles

The article offers a brief biography of Dr. E.B. Norton president of Florence State Teachers College, a precursor to the University of North Alabama.

"Florence: An Early Cotton Mill Town", William Lindsey Mcdonald

Research Articles

In the antebellum period and early years of the Civil War, Florence, Alabama was a leading center for the textile industry with five cotton mills, including the prominent Cypress Mills. The article gives an overview of the impact of mills in and around the area.

A lithograph fragment of Cypress Mill is available in the William Lindsey McDonald Image Collection. Other images of mills can be found by searching "mills" in the left sidebar.

Fall 2026 Environmental Sciences Seminar Series, Jingyan Huang, Jingyan Huang

NRESS Seminars

This seminar presents a game-based social simulation of emergency response to water contamination, in which large language model (LLM) agents represent stakeholders with diverse roles, information, incentives, and constraints.

Through unfolding crisis scenario, the simulation explores how communication, coordination, and decision making shape collective outcomes under uncertainty. In this seminar, I will discuss the game’s design, the use of LLMs to model social interaction, and opportunities and limitations for research, training, and practical policy experimentation.

Archives As Activism: Using Cuny Archives To Examine And Analyze Social Change, Marci Littlefield

Open Educational Resources

Archives as Activism uses CUNY archival materials to help students examine the relationship between activism, social issues and social change. Students will analyze primary sources such as flyers, newsletters, photographs, student newspapers, and institutional documents and connect them to contemporary social issues. CUNY’s history of activism around, race, gender, educational access, women’s organizing and institutional power provides students with an opportunity to investigate questions about power, collective action, intersectionality and social change.

Peri-Implant Soft Tissue Optimization Through Comprehensive Implant Therapy With Er:Yag Laser-Assisted Labial Frenectomy In The Esthetic Zone: A 5-Year Case Report, Taichen Lin

Articles in Press

No abstract provided.

Artificial Intelligence In Dentistry: A Comprehensive Review Of Applications, Evidence Maturity, And Translational Challenges, Cheng-Chia Yu

Articles in Press

No abstract provided.