Digital Commons Network^™

Fasttree-Guided Genetic Algorithm For Credit Scoring Feature Selection, Rashed Bahlool, Nabil Hewahi Prof., Youssef Harrath Dr.

Research & Publications

Feature selection is pivotal in enhancing the efficiency of credit scoring predictions, where misclassifications are critical because they can result in financial losses for lenders and exclusion of eligible borrowers. While traditional feature selection methods can improve accuracy and class separation, they often struggle to maintain consistent performance aligned with institutional preferences across datasets of varying size and imbalance. This study introduces a FastTree-Guided Genetic Algorithm (FT-GA) that combines gradient-boosted learning with evolutionary optimization to prioritize class separability and minimize falserisk exposure. In contrast to traditional approaches, FT-GA provides fine-grained search guidance by acknowledging that false positives and false negatives …

Optimal Planning Strategies For Power Grid Topology Steiner Minimum Tree To Enhance Resilience Capability, Yunpeng Zhai, Dongqi Liu, Haolan Liang, Wei Li

Journal of Electric Power Science and Technology

Energy security is related to the overall situation of economic and social development.In recent years, deliberate attacks and disasters against the power grid have occurred frequently, and the power system has become an important target of attacks in international conflicts.In order to enhance the ability of the power grid to resist deliberate attacks and disasters and ensure the safe operation of the national energy infrastructure, a Steiner minimum tree planning method is proposed for the power supply network topology to the improvement of invulnerability.Firstly, the grid structure strength index and operation vulnerability index are designed for the grid planning problem.A …

Multi-Control Parameter Optimization Method For Dc Microgrids Based On Quadratic Index, Jinyuan Liu, Tianjiao Feng, Xiaorong Zhu

Journal of Electric Power Science and Technology

In DC microgrids, there is interaction between different types of converters, which is easy to be affected by disturbance during operation, resulting in decreased power quality.Therefore, the stability of DC microgrids has become a key issue in microgrid research.In this paper, the small signal model of DC microgrid system including voltage source converter （VSC） and buck-boost DC-DC converter is derived, and the eigenvalues and participation factors of the system are calculated.The stability regions of key control parameters such as PI parameter, droop coefficient, and virtual inertia coefficient are compared with and without grid-connected converter.Then, according to the quadratic theory, the …

Geolocation Algorithms And On-Orbit Calibration For Atmospheric Waves Experiment, Eric Mckinney, Keith Blonquist, Zack Hatfield, Connor Waite, Brooke Wursten, Pedro Sevilla, Ludger Scherliess, Harri Latvakoski, Greg Cantwell

Space Dynamics Laboratory Publications

1 - Overview

• Motivation: Atmospheric gravity waves can degrade navigation, tracking, communications, and geolocation system signals. They can also affect satellite/debris orbit and reentry predictions.
• NASA's Atmospheric Waves Experiment (AWE) is currently on ISS measuring atmospheric gravity waves in the OH airglow layer at ~87 km altitude
• Impact: Improved space weather understanding, estimation, and forecasting

Linking Shoreline Change, Environmental Forcings, And Sedimentological Resilience In Nourished Beaches Of Cape May And Wildwood, New Jersey, Usa: A Multi-Decadal Synthesis, Divomi Balasuriya, Greg Pope

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

Beach nourishment is a widely used strategy to mitigate coastal erosion, yet its long-term geological impacts remain poorly understood. This study provides a multi-decadal synthesis of shoreline change and sedimentological evolution on the nourished beaches of Cape May and Wildwood, New Jersey, USA. Using shoreline positions from 1991 to 2024, we identify contrasting trajectories: Wildwood exhibits ‘persistent transition’ with severe northern erosion (EPR: −10.0 m/yr) feeding southwards accretion, while Cape May demonstrates a ‘managed equilibrium’ with widespread accretion (mean EPR: +1.15 m/yr). Wave energy correlations account for less than 15% of shoreline variability, indicating natural drivers have been superseded by …

Cybernest: A Step Forward For Training Cybersecurity Professionals, Justin Mott

Theses and Dissertations

The growing complexity of cyber threats has exposed a critical gap between academic cybersecurity education and the operational demands of the workforce. This thesis presents a pilot study for a use-case of CyberNEST, a simulation-based training platform that integrates adversary emulation and threat-informed learning to create realistic, hands-on experiences for cybersecurity students.(17) The system was designed to replicate Security Operations Center (SOC) environments and incident response workflows, allowing participants to investigate, analyze, and respond to simulated attacks under authentic conditions. This pilot-study performed training simulations using the CyberNEST platform, developed by Brigham Young University, with students, collecting data from pre- …

Impact Of Gas Supersaturation On The Development Of Gas Bubble Trauma In Paedomorphic Eurycea Salamanders, Trent Furr

Biology Theses

There are eleven species of paedomorphic lungless salamanders endemic to Texas. Of these, eight are considered threatened by the International Union for Conservation of Nature (IUCN). One of these, the Barton Springs Salamander (Eurycea sosorum), is found only in springs and aquifers in and around Austin, Texas. A large population of this species is found in Barton Springs, located in Austin, TX–where dissolved gas saturation has been measured as high as 134%. Morbidity and mortality events in Barton Springs Salamanders have been documented coinciding with periods of dissolved gas supersaturation. This study seeks to understand what environmental conditions lead to …

Viral Warriors: Unlocking The Immune System’S Potential With Oncolytic Viruses In Cancer Immunotherapy, Reza Ghavimi, Leila Rahimian, Mohsen Mohammadi, Ojasvi Dutta, Harikrishnan Mohan, Vladimir Chouljenko, Tolulope O. Omolekan, Jean Christopher Chamcheu, Konstantin G. Kousoulas

Faculty Publications

Oncolytic viruses (OVs) represent an exciting avenue in tumor immunotherapy, harnessing the power of viruses to overcome resistance and enhance immune responses. OVs achieve this by selectively targeting and destroying tumor cells. This cell lysis releases tumor-specific antigens (TAAs), effectively creating an in situ vaccine that educates the immune system. Moreover, OVs directly trigger both innate and adaptive immunity and can be genetically engineered to secrete immune-boosting factors. Early studies have shown promising synergistic antitumor effects when OVs are combined with other cancer therapies or immunotherapies. A key advantage of OVs is their capacity to reprogram the tumor microenvironment (TME), …

Communicating Strategically In The Workplace: A Resource For Engineering And Science Majors, Karishma Chatterjee, Damla A. Ricks, Diane E Waryas Hughey

Mavs Open Press Open Educational Resources - Archive

We created this book to provide a targeted understanding of the process of communication to STEM (Science, Technology, Engineering, Mathematics) students. We have included specific and concise information in this book catering to technical and professional fields. Students will be able to develop their skills in writing, presenting, and interviewing, and improve their interpersonal relationships in the workplace.

Power Solutions For Large Loads: Mastering Electrical Supply For New Industrial Facilities, Chris Boyer, William Bourgeois, Skyler Bryant

Mavs Open Press Open Educational Resources - Archive

The next 25 years will see unprecedented growth in U.S. electricity demand, driven primarily by data centers for AI and industrial electrification. This surge presents unique challenges for power generation, especially for large loads requiring hundreds of megawatts to gigawatts from a single location. Conventional grid expansion is inadequate, prompting the need for innovative, flexible, and sustainable solutions. This book explores the opportunities, challenges, and hybrid generation strategies to support the evolving landscape of large-scale electric loads.

Preparing Students For College And Careers: Recommendations For Scaling College And Career Pathways In Southwestern Illinois, Laura Monteagudo

Reports, Analyses, and other Publications

Education Systems Center (EdSystems) at Northern Illinois University provided strategic counsel and support to Southwestern Illinois College (SWIC) for a 12-month period to develop comprehensive college and career pathways. Our support included the development of a unified, regionwide college and career pathway system aligned with Illinois’ College and Career Pathway Endorsement framework, Perkins V, and the State of Illinois Model Programs of Study Guides.

Instead of each district building pathways independently, this regional approach brings together high schools, community college faculty, and local employers to create shared structures that reflect real workforce needs and rural access challenges.

In this report, …

Conquer And Prevail Issue 203 December 18 2025, Wofford College. Office Of Marketing And Communications

Conquer and Prevail Newsletter

No abstract provided.

Creating Your Own Learning Path: Lessons From The Physics Classroom, Natalia Romero

Teaching Repository of AI-Infused Learning

Driving Your Own Learning Path is a strategy that guides students to create personalized AI-supported learning. Students initiate and refine their own prompts, progressing from basic questions to deeper conceptual and relational inquiries while using AI as a thinking partner rather than an answer provider. This approach strengthens self-regulation and metacognitive awareness by allowing students to reflect on their learning process and adapt their study strategies in real time.

Turtlebot4 For Inventory Delivery Tasks: Practical Implementation In An Academic Setting, Aisha Alchaar

Master’s Theses and Projects

No abstract provided.

The Hrt Conjecture: Known Results And Recent Advances, Sophia Maniscalco

Master’s Theses and Projects

No abstract provided.

Taking Back The Trades: Southwestern Illinois Work-Based Learning Inventory Report, Alexia Santiago

Reports, Analyses, and other Publications

In 2025, Education Systems Center at Northern Illinois University (EdSystems) partnered with Southwestern Illinois College (SWIC), regional school districts, and industry partners to build a strong and comprehensive system of work-based learning opportunities for K-12 students that is aligned with Illinois statutes and frameworks. In this report, EdSystems identifies the existing regional events and activities that promote high-quality work-based learning for college and career pathways in the health sciences and manufacturing sectors.

Clemson Commencement Program, December 2025, Clemson University

Clemson Commencement Programs

No abstract provided.

Impact Of Complex Operating Conditions Caused By Superposition Of Photovoltaic Access And System Short-Circuit On Distribution Network Lightning Arrester Operation, Jin Bai, Xiu Zhou, Xin Yang, Tian Tian, Rui Yin

Journal of Electric Power Science and Technology

In recent years, a large number of photovoltaic power sources have been connected to the distribution network, and the line voltage fluctuations caused thereby have become a research hotspot.However, at present, there is insufficient understanding of the complex operating conditions formed by the superposition of overvoltage generated by short-circuit faults in the distribution network and system voltage fluctuations caused by photovoltaic access, as well as a lack of knowledge about the fault mechanisms of distribution network lightning arresters and other equipment under such operating conditions.To solve the above problems, a simulation calculation model for substation overvoltage with photovoltaic access is …

Optimal Scheduling Strategy Of Frequency Regulation For Electric Vehicle Battery Swapping Stations Based On User Swapping Adaptive Model, Chenhao Miao, Meixia Zhang, Xiu Yang, Wenlong Li

Journal of Electric Power Science and Technology

As fast energy supply stations, electric vehicle （EV） battery swapping stations （BSS） meet EV energy demand and support power system frequency regulation services.To address the issues of EV scheduling and participation in grid FM, a two-phase EV BSS frequency regulation optimal scheduling strategy considering the user swapping adaptive model is proposed, aiming to improve the BSS economy.Firstly, a price mechanism model is designed for battery swapping at the BSS.A swapping adaptive model is built based on the battery's state of charge （SOC）, the battery ’s state of health （SOH）, and the user ’s satisfaction.Then, the BSS cluster is modeled to …

Sub-Synchronous Oscillation Suppression Strategy For Weak Ac Grid-Connected Systems Of Direct Drive Wind Turbines Based On Dual Phase-Locked Loop Compensation Current, Zewen Li, Dexuan Jiao, Guolin Ding, Guorui Wu, Yazi Luo, Hu Xiao, Yuanchuan Wang

Journal of Electric Power Science and Technology

The dynamic interaction between the control system of direct drive wind turbines and weak AC lines can easily cause sub-synchronous oscillations.Therefore, a sub-synchronous oscillation suppression strategy based on dual phase-locked loop （PLL） compensation current is proposed.By derivation of the transfer function model of the system, the influence of the interaction between the wind turbine control system and the AC line on the stability of the grid-connected system is analyzed, and the mechanism of sub-synchronous oscillation of the system is revealed.On the basis of traditional additional sub-synchronous damping control （SSDC）, the phase disturbance of the PLL is considered, and a compensation …

Short-Term Prediction Model For Pv Coupled With Wrf-Solar And Irradiance Correction, Bin Li, Yi Ding, Zhe Bao, Yu Song, Wei Li

Journal of Electric Power Science and Technology

As the depletion of traditional fossil energy becomes more serious, the use of solar energy for photovoltaic power generation has been an important direction for global countries to adjust their energy structure.There is an urgent need to improve the prediction accuracy of photovoltaic power generation capacity.A short-term prediction model for photovoltaics （PV） coupled with a weather research and forecasting model for solar energy （WRF-Solar ） and irradiance correction is proposed to enhance the accuracy and reliability of short-term prediction of photovoltaic power.Firstly, WRF-Solar is used for numerical prediction of dynamic downscaling weather to obtain future meteorological factors, including irradiance.Then, a …

Improved Fcm Load Clustering Method Based On C-Svd Dimensionality Reduction, Jinwei Wan, Jie Xing, Yinghao Shan, Beiyu Jin, Meiqian Hou

Journal of Electric Power Science and Technology

Daily load data clustering is an important method for analyzing and extracting users ’ electricity consumption characteristics.The indicator weights of the dimensionality-reduced sampling data for clustering will affect the clustering results.Therefore, a daily load data clustering method based on the integration of the CRITIC weighting singular value decomposition （SVD） dimensionality reduction method （C-SVD） with an improved weighted fuzzy C-means （FCM） algorithm is proposed.Meanwhile, to solve the problem that traditional FCM is susceptible to the initial clustering centers, an adaptive initial clustering center determination method called density-distance center selection （DDCS） is proposed.Firstly, SVD is adopted to perform dimensionality reduction on the …

Secure Communication Scheme For Power Lines Based On Ofdm-Im, Fang Chen, Sihao Zhu, Weijie Yang, Guixian Cheng, Zhou Dai

Journal of Electric Power Science and Technology

To address the illegal eavesdropping problem caused by the openness of power line communication （PLC） channels, a physical-layer secure transmission scheme, namely artificial noise added orthogonal frequency division multiplexing with index modulation （AN-added OFDM-IM ）, is proposed from the perspective of physical-layer security for wiretap PLC channels.In this scheme, the index bits are still transmitted through the states of carriers, and the modulated bits are still transmitted via active carriers, while the idle inactive carriers are used to transmit artificial noise （AN） generated based on the channel state information （CSI） between legitimate links.The secure transmission rate of the proposed scheme …

Single-Phase Grounding Fault Line Selection Method For Active Distribution Network With Energy Storage Power Stations, Xiaoran Wang, Chunju Fan, Yan Hu, Haoyu Zhu, Hulin Liu, Hai Ye, Zhongping Liu, Yong Hou

Journal of Electric Power Science and Technology

With the continuous integration of large-scale new energy, the scale of power grids and distribution networks is constantly expanding.Due to the large number of power electronic devices in the grid, the traditional fault line selection scheme for small current grounding systems can hardly ensure the line selection accuracy.To solve this problem, the fault characteristics of active distribution networks with energy storage power stations when single-phase grounding faults occur are analyzed, namely the different fault characteristics during the charging and discharging of energy storage power stations and the distribution characteristics of single-phase grounding fault current in resonant grounding systems.Then, a fault …

Optimal Configuration Of Regional Integrated Energy Systems Considering Energy Demands Across Se Miconductor Industry Chain, Bo Liu, Tao Huang, Hui Yan, Rui Liang, Yixiang Chen, Xuequan Xiao, Fanlin Meng, Shen Cao

Journal of Electric Power Science and Technology

As the construction of new power systems advances, industrial energy demands grow diverse, with significant differences across upstream, midstream, and downstream industrial chain segments.Against this backdrop, there’s an urgent need to build integrated energy systems （IES） that satisfy the energy needs of whole-industry-chain clusters.This imposes higher demands on the optimal allocation and efficient operation of IES.To this end, the semiconductor industry is taken as an example, and a strategy is proposed for optimal allocation of regional integrated energy tailored to the semiconductor whole-industry-chain energy demands.First, according to the energy consumption characteristics of each production segment, the semiconductor industry chain clusters …

Sub-Synchronous Oscillation Detection In Wind Power Systems Based On Pmsst, Zhijian Liu, Cheng Tang, Ruixin Li, Hang Dong, Jikai Chen

Journal of Electric Power Science and Technology

In recent years, the rapid development of wind power has increasingly complicated the operation of power systems, with a higher risk of sub-synchronous oscillations （SSO）.The accurate and quick detection of SSO is highly important for effective countermeasures.However, the existing methods often exhibit poor noise adaptability and modal overlapping.To address these limitations, this paper proposes the parameterized multi-synchrosqueezing transform （PMSST）, which combines weighted least squares, multi-synchrosqueezing transform, and polynomial chirp transform.PMSST first applies the multi-synchrosqueezing transform to achieve a high-energy-concentration time-frequency representation.The instantaneous frequency ridges of component signals are then extracted by ridge extraction algorithms, and Weighted Least Squares is employed …

Model Predictive Control Method For Degaussing Power Supply Current In Induced Magnetic Field Of Ship, Xiaohui Yang, Wentao Huang, Huanhong Yang, Moduo Yu

Journal of Electric Power Science and Technology

A ship generates a compensating magnetic field by supplying power to multiple sets of degaussing coils, and when a single degaussing coil fails, the remaining degaussing coil current needs to be adjusted quickly.To address the difficulty of degaussing power supply to maintain the magnetic field quickly and accurately when the coils fail, this paper proposes a model predictive control method for Buck converter-type degaussing power supply current, which realizes the stable and fast control of degaussing current.By analyzing the working principles of the front and rear two-stage converters, this study develops a two-stage multi-output Buck converter state-space averaging model, based …

Research On Distribution Network Reconstruction Based On K-Nn Hybrid Genetic Algorithm, Fu Li, Zhi Zhang, Jiawei Ding, Kun Wang

Journal of Electric Power Science and Technology

In the case of widespread access to distributed generation, in order to meet the radial topology constraints of the network, the distribution network topology constraints and other constraints are considered, and a distribution network reconfiguration method based on a k-NN hybrid genetic algorithm is proposed.First, the minimum network loss, load balance, and the minimum number of circuit breaker actions are used as the objective function.The mathematical model of distribution network reconfiguration is constructed under the constraints of the power flow equation, load balance, voltage ceiling, and power ceiling.The k-NN algorithm is used to ensure that the chromosomes always meet the …

Optimization Methods Of Shared Energy Storage In Rural Multiple Transformer Districts Based On Credibility Incentive, Yanwei Zhang, Xiangbing Jiang, Zhen Li, Bo Tang

Journal of Electric Power Science and Technology

In response to the heavy overload and reverse power of transformers caused by the high proportion of distributed power sources and new loads connected to rural power distribution systems, an optimization method of shared energy storage in rural multiple transformer districts is proposed based on credibility incentive.First, a power grid-transformer district load aggregator （transformer district load aggregator, TDLA）-user system operating framework is established.An effective demand response strategy is formulated based on credibility incentives and response volume metrics are introduced, allowing TDLA to interact with users who have a large number of flexible resources, guide users to change their own electricity …

Study On Grounding Test Of Induced Voltage And Its Protection Distance In Power Transmission And Distribution Corridors, Jiong Chen, Ziyi Qin, Aiqing Ma, Maoxin Ren, Fan Yi

Journal of Electric Power Science and Technology

The extra-high voltage and ultra-high voltage transmission lines pose significant induced voltage hazards to the adjacent distribution lines beneath them, creating difficulties for distribution maintenance work.Installing grounding wires on the lines is one of the most effective protective measures against induced voltage, but there is a lack of experimental simulations and quantitative guidance that can support practical engineering.Based on the principle of induced voltage, experiments are designed to verify the effectiveness and distance limitation of induced voltage grounding protection during distribution maintenance.The influence of voltage level, number of circuits, and grounding interval distance on induced voltage is explored, and a …