Digital Commons Network^™

Dynamic Multi-Layered Hardware Obfuscation With Behavioral Drift Locking For Sat-Resistant Designs, Ahmed Yehia Salah Mohamed Emish

Theses and Dissertations

The globalization of the semiconductor supply chain has introduced critical vulnerabilities, including intellectual property (IP) piracy, reverse engineering, and hardware tampering. While traditional logic locking offers a baseline of defense, the emergence of powerful Boolean satisfiability (SAT) solvers has rendered many static obfuscation techniques ineffective. This work proposes a Dynamic Multi- Layered Hardware Obfuscation Framework that utilizes Behavioral Drift Locking (BDL) to provide a robust defense-in-depth against advanced adversarial models. The methodology integrates four synergistic layers: • Dynamic Key Management using a time-dependent rotation mechanism that updates keys every clock cycle to prevent static analysis. • Control Obfuscation through opcode …

Characterizing Indoor Surface Voc Contamination After The 2025 Los Angeles Fires, Brett W. Stinson, Emily Lei, Elliott T. Gall

Mechanical and Materials Engineering Faculty Publications and Presentations

We quantify volatile organic compound (VOC) emissions from indoor surface swabs and portable air cleaner (PAC) filters collected in a home 30 days after the 2025 Los Angeles wildland-urban interface (WUI) fires. We calculate emissions for 17 fire-relevant compounds. Surface emissions exceeded those of clean controls, and emissions from a windowsill in a room without a PAC were ∼15× and ∼2× higher for benzene and toluene, respectively, than rates reported in the literature for comparable materials unaffected by smoke/soot. Particle filters installed in PACs at the start of the fire emitted aromatics at rates comparable to those reported in a …

The Evolution Of Mro Outsourcing: Global Trends, Regulatory Challenges, And Strategic Considerations In Aviation Maintenance, David C. Ison

Journal of Aviation Technology and Engineering

The maintenance, repair, and overhaul (MRO) industry plays a critical role in ensuring the safety, efficiency, and sustainability of the global aviation sector. As airlines seek to reduce costs, optimize operations, and access specialized expertise, MRO outsourcing has become an increasingly prevalent strategy. This essay examines the key drivers of MRO outsourcing, including cost reduction, access to advanced technologies, and the focus on core competencies. The essay also explores emerging trends such as the rise of new MRO hubs in Asia and the Middle East, the integration of predictive maintenance and artificial intelligence, and the growing emphasis on environmental sustainability. …

Emulating Camera Parameters For A Digital Twin Lunar Terrain Simulation, Samuil Nikolov

Student Research Symposium (SRS)

Digital twin simulations play an integral role in the design, validation and implementation of a plethora of systems in any industry - including aerospace. EagleCam 2 presents a great technical challenge, where we need to evaluate how our systems will do data acquisition best - image capturing in particular. In order to assist with the design and validation of our systems, a digital twin that emulates the Lunar environment as we expect it to be during the lifecycle of the mission is a crucial component. Such digital twin system allows us to simulate all the parameters that are considered variable …

Intravascular Ultrasound Is More Accurate Than Angiography In Arteriovenous Vascular Access Lesions, James W. Decker, Dima Banihani, Curtis Honshideler, Saran Lotfollahzadeh, David Jasen Wu Wong, Alik Farber, Jeffrey J. Siracuse, Najia Idrees, Laura Dember, Mohammad Bader, Suvranu Ganguli, Vijaya Kolachalama, Tarek Shazly

Faculty Publications

Background:

Conventional angiography remains the standard diagnostic modality for arteriovenous (AV) access dysfunction in hemodialysis patients, but its geometric accuracy is limited. Intravascular ultrasound (IVUS) offers superior lesion detection, yet its absolute measurement accuracy remains uncertain. Using three-dimensional (3D) printed vascular conduits as reference standards, we assessed the accuracy of IVUS versus angiography, hypothesizing that complex conduit geometry, quantified by Gaussian curvature, would exacerbate angiographic error.

Methods

Clinically relevant AV access geometries were modeled with computer-aided design (CAD) and fabricated using 3D printing. Lumen diameters were measured by contrast angiography and IVUS and compared with CAD dimensions. Conduit geometry was …

In Situ Detection Of Dead Cells From Live Cells Via A Dc Plus Low Frequency Ac Resistive Pulse Sensor, Jiang Zhe, Ge Zhang, Joseph Ketchum, Ashely Wong

University Research

Differentiation and detection of live and dead cells are critical for assessing cell viability in biomedical research, evaluating drug efficacy, and monitoring cytotoxicity in therapeutic applications. We present a microfluidic sensor that consists of two successive resistive pulse sensing channels. An excitation signal composed of a low-frequency AC (75 kHz) component and a DC bias was used to measure four key parameters. Through the AC measurement, differences in cell impedance causes variations in phase angle and voltage peak. From the DC measurement, cell size can be inferred from the resistive pulse magnitude, and the cell’s zeta potential is represented by …

Finding Research Datasets And Evaluating Data Quality, Ibis Anette Moreno-Lozano Phd.

Day Family Research Lab Workshop Series

No abstract provided.

Solar Backscatter Ultraviolet (Buv) Retrievals Of Mid-Stratospheric Aerosols From The 2022 Hunga Eruption, Robert J.D. Spurr, Matt Christi, Nickolay A. Krotkov, Won Ei Choi, Simon Carn, Can Li, Et Al.

Michigan Tech Publications

On 15 January 2022, a highly explosive eruption of the submarine Hunga volcano (Kingdom of Tonga) generated the largest stratospheric hydration event ever observed and the largest aerosol perturbation since the 1991 Pinatubo eruption. Here, we develop a novel method for satellite retrieval of stratospheric aerosol optical depth (AOD) and layer peak height (zp) using solar backscattered ultraviolet (BUV) radiation; this is made possible by the exceptional mid-stratospheric altitude of the Hunga aerosols. We analyze BUV observations of the Hunga stratospheric aerosol cloud on 17 January 2022 (47 h after the eruption), using BUV band 1 measurements from the TROPOspheric …

Dynamic Soliton Solutions And Stability Analysis Of The (2+1)-Dimensional Wazwaz Kaur Boussinesq Equation Using An Efficient Method, Nivan Mohamed Elsonbaty, Hamdy Mohamed Ahmed, Niveen Mohamed Badra, Wafaa B. Rabie

Basic Science Engineering

This paper presents the first application of the Modified Extended Direct Algebraic (MEDA) method to the (2+1)-dimensional Wazwaz-Kaur-Boussinesq equation, a model governing wave dynamics in shallow waters. The approach successfully uncovers previously unreported classes of exact solutions, including combo dark–singular solitons and Jacobi elliptic function solutions. The spectrum of obtained solutions–which also encompasses bright, dark, and singular solitons, as well as hyperbolic, periodic, exponential, and rational functions–reveals rich and complex soliton dynamics. A comprehensive stability analysis confirms the robustness of these solutions under perturbation. These results significantly advance the understanding of wave propagation in nonlinear systems, providing valuable insights for …

An Autonomous Robotic System For Object Retrieval And Delivery: Enhancing Independence For Users Living With Disability And Older Adults, Jincheng Li, Chenghao Lin, Amna Mazen, Youssef A. Bazzi

Michigan Tech Publications

As the global population ages, there is a growing need for assistive technologies to help older adults maintain their independence. This work presents a cost-effective autonomous socially assistive robot designed for object retrieval and delivery, enhancing accessibility in home environments. The system is built on the Robot Operating System (ROS) framework and integrates three key components: the Pioneer P3-DX mobile robot for autonomous navigation, the ReactorX-200 robotic arm for pick-and-place operations, and the Kinect v2 RGB-D camera for object detection and localization. Users interact with the robot through natural language processing by issuing voice commands to retrieve various objects. Microsoft …

A Comprehensive Review Of Food Waste Management In Attaining Sdg 12.3 Goals: Insights From Asian Countries, Ping Hu, Lotifa Tamanna Toma, Ashraful Alam, Md. Tanvir Ahmmed, Md. Jahidul Islam, Kazi Farhana, Marjia Sultana, Miraj Ahmed Bhuiyan

Civil and Environmental Engineering Faculty Publications and Presentations

Food waste is one of the most important world-wide challenges whose environmental, economic and social impacts have far-reaching effects that include contributing to greenhouse gas emissions, resources depletion as well as the rising levels of food insecurity. These problems are further intensified in Asia due to high rate of urbanization, population growth, changing dietary habits, and lack of waste management facilities. These conditions complicate the fact that countries are increasingly struggling to achieve the United Nations Sustainable Development Goal (SDG) 12.3, which is to ensure that by 2030, half of the world has dropped per-capita food waste, and food losses …

Artificial Intelligence And Additive Manufacturing As A Coupled Design System: Rethinking Inference, Manufacturability, And Design Education, Charul Chadha, Garth Crosby, Sabit Ekin, Mohamed Gharib, Eman Hammad, Congrui Jin, Ali Ahmad Malik, Noemi Mendoza Diaz, Calahan Mollan, Monsuru Ramoni

Manufacturing & Industrial Engineering Faculty Publications

Artificial intelligence (AI) is becoming deeply integrated into additive manufacturing (AM) workflows, reshaping how designers approach geometry, materials, and process constraints. AI holds significant potential by accelerating design exploration, revealing complex patterns in AM behavior, and supporting earlier assessment of manufacturability. At the same time, it introduces new risks related to model transparency, data quality, physical validity, and the potential for overreliance by students and practitioners. This perspective examines these issues through four guiding questions that address the role of AI in AM-enabled design, the gaps that limit or enable AI contribution, the implications for engineering education, and the responsibilities …

Retraction Notice: Solving Time-Fractional Nonlinear Variable-Order Delay Pdes Using Feedforward Neural Networks, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Alruhaili, Hala S.; Hussain, Adel S.; Ajlouni, Abdullah M. S.; Türk, Funda; Az-Zo'bi, Emad A.; and Tashtoush, Mohammad A. (2025) ``Solving Time-Fractional Nonlinear Variable-Order Delay PDEs Using Feedforward Neural Networks,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 3, Article 12. DOI: https://doi.org/10.52866/2788-7421.1284.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss3/12.

Retraction Notice: Software Engineering-Oriented Text Generation And Analysis Using Gpt-2, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Hussien, Nadia Mahmood; Farhan, Aumama Mohammed; Mohialden, Yasmin Makki; Jabbar, Qabas Abdal Zahraa; Abdulmaged, Shahbaa Mohammed; and Arif, Asmaa Hatem (2025) ``Software Engineering-Oriented Text Generation and Analysis Using GPT-2,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 3, Article 32. DOI: https://doi.org/10.52866/2788-7421.1312
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss3/32

Retraction Notice: Robust Security System: A Novel Facial Recognition Optimization Using Coronavirus-Inspired Algorithm And Machine Learning, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Kadhim, Saif Mohanad; Siaw Paw, Johnny Koh; Tak, Yaw Chong; and Al-Latief, Shahad Thamear Abd (2025) ``Robust Security System: A Novel Facial Recognition Optimization Using Coronavirus-Inspired Algorithm and Machine Learning,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 2, Article 19. DOI: https://doi.org/10.52866/2788-7421.1260.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss2/19.

Retraction Notice: Navigating The Complexities And Artificial Intelligence Of Internet Of Things Security Claims, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Mohamed, Tamara Saad and Khalifah, Saad Mohammed (2025) "Navigating the Complexities and Artificial Intelligence of Internet of Things Security Claims," Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 2, Article 28. DOI: https://doi.org/10.52866/2788-7421.1270
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss2/28

Retraction Notice: Metaguard: A Federated Learning Approach To Hybrid Xgboost And Meta-Learning Models For Proactive Cyber Threat Hunting, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Al-Khalisy, Shatha H. Jafer and Al-Kateb, Ghada Emad (2025) ``MetaGuard: A Federated Learning Approach to Hybrid XGBoost and Meta-Learning Models for Proactive Cyber Threat Hunting,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 3, Article 27. DOI: https://doi.org/10.52866/2788-7421.1300.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss3/27.

Retraction Notice: Mathematical Properties And Simulations Of The Neutrosophic Gompertz-Inverse Burr-X Distribution With Application To Under-Five Mortality, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Jumaa, Mustafa Hassan; Qaddoori, Asmaa S.; Khalaf, Sara A.; Noori, Nooruldeen A.; and Khaleel, Mundher A. (2025) ``Mathematical Properties and Simulations of the Neutrosophic Gompertz-Inverse Burr-X Distribution with Application to Under-Five Mortality,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 3, Article 23. DOI: https://doi.org/10.52866/2788-7421.1297. Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss3/23.

Retraction Notice: Iot Flow Parameters Classification Based On Machine Learning Techniques, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: El-Kenawy, El-Sayed M.; Eid, Marwa M.; Shukur, Ban Salman; Alhussan, Amel Ali; and Khafaga, Doaa Sami (2025) ``IoT Flow Parameters Classification Based on Machine Learning Techniques,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 3, Article 28. DOI: https://doi.org/10.52866/2788-7421.1301.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss3/28.

Retraction Notice: Intrusion Detection System For Iot Based On Modified Random Forest Algorithm, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Akif, Omar Z.; Ali, Sura Mazin; Sabih, Ann F.; Sadiq, Ahmed T.; and Subramaniam, S. K. (2025) ``Intrusion Detection System for IoT Based on Modified Random Forest Algorithm,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 2, Article 17. DOI: https://doi.org/10.52866/2788-7421.1258.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss2/17.

Retraction Notice: Image Denoising Using Smooth Total Variation Function For 5g Enhanced Mobile Broadband Transmission System, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Ibrahem, Shehab Ahmed; Abdulwahab, Walled Khalid; and Shuwandy, Moceheb Lazam (2025) ``Image denoising using smooth total variation function for 5G enhanced mobile broadband transmission system,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 1, Article 14. DOI: https://doi.org/10.52866/2788-7421.1244.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss1/14.

Retraction Notice: Hotspot Issue Handling And Reliable Data Forwarding Technique For Ocean Underwater Sensor Networks, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Mahdi, Omar Adil; Al-Mayouf, Yusor Rafid Bahar; Al-Obaidi, Sameer Sami Hassan; AL-Attar, Bourair; Balogun, Hamed; and Khan, Suleman (2025). ``Hotspot Issue Handling and Reliable Data Forwarding Technique for Ocean Underwater Sensor Networks,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 3, Article 37. DOI: https://doi.org/10.52866/2788-7421.1307.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss3/37.

Retraction Notice: High-Performance System For Predicting Icu Patient Durations Using Artificial Neural Networks With Transfer Learning, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Awsaj, Mahmood. K.; Mashhadany, Yousif Al; and ChaariFourati, Lamia (2025) ``High-Performance System for Predicting ICU Patient Durations Using Artificial Neural Networks with Transfer Learning,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 3, Article 19. DOI: https://doi.org/10.52866/2788-7421.1285.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss3/19.

Retraction Notice: Fuzzy Backstepping Approach To Stabilizing Fuzzy Parabolic Partial Differential Equations, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: John, Zainab; Fadhel, Fadhel S.; Karim, Samsul Ariffin Abdul; and Ying, Teh Yuan (2025) "Fuzzy Backstepping Approach to Stabilizing Fuzzy Parabolic Partial Differential Equations," Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 4, Article 13. DOI: https://doi.org/10.52866/2788-7421.1338
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss4/13

Retraction Notice: Evaluating The Performance Of The Dbscan Algorithm's Using Number Of External Scores Measures, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Abbas, Rajaa Hasan; Hashim, Huda Qusay; and Nasser, Huda Karem (2025) ``Evaluating the Performance of the DBSCAN Algorithm's using Number of External Scores Measures,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 3, Article 41. DOI: https://doi.org/10.52866/2788-7421.1310.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss3/41.

Retraction Notice: Efficient Multi-User Computation Offloading And Reducing Latency In Mobile-Edge Computing For Iot Applications, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Abdul-Samad, Sarmad T.; Al-Hwaidi, Osamah; and Muslem, Ali Abd Al-Rasool (2025) ``Efficient Multi-User Computation Offloading and Reducing Latency in Mobile-Edge Computing for IoT Applications,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 3, Article 29. DOI: https://doi.org/10.52866/2788-7421.1298.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss3/29.

Retraction Notice: Dynamics And Stability Analysis Of 8-Dimensional Hyperchaotic Systems: Study Of Lyapunov Exponents, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Hamad, Abdulsattar Abdullah; Ali, Nida Muhsin; and Khalil, Muayyad Mahmood (2025) ``Dynamics and Stability Analysis of 8-Dimensional Hyperchaotic Systems: Study of Lyapunov Exponents,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 3, Article 18. DOI: https://doi.org/10.52866/2788-7421.1295.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss3/18.

Retraction Notice: Deep Learning-Based Beamforming Optimization For Reconfigurable Intelligent Surface-Assisted Wireless Communication Systems, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Jassim, Mohammed Firas; Mohammed, Alhamzah Taher; and Abdullah, Osamah (2025) ``Deep Learning-Based Beamforming Optimization for Reconfigurable Intelligent Surface-Assisted Wireless Communication Systems,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 1, Article 7. DOI: https://doi.org/10.52866/2788-7421.1233.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss1/7.

Retraction Notice: Data Envelopment Analysis Using Stochastic Frontier Analysis And Bootstrap Confidence Intervals, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Alqahtani, Fahad F. (2025) ``Data Envelopment Analysis using Stochastic Frontier Analysis and Bootstrap Confidence Intervals,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 2, Article 11. DOI: https://doi.org/10.52866/2788-7421.1254.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss2/11.

Retraction Notice: Comparative Study Based On Continuous Analysis Of Autism Spectrum Disorder Using Advanced Deep Learning With Model Interpretability Insights, Iraqi Journal For Computer Science And Mathematics

Iraqi Journal for Computer Science and Mathematics

NOTICE OF RETRACTION FOR: Sar, Ayan; Mahdi, Hussain Falih; Aich, Sumit; Singh, Pranav; and Choudhury, Tanupriya (2025) ``Comparative Study based on Continuous Analysis of Autism Spectrum Disorder Using Advanced Deep Learning with Model Interpretability Insights,'' Iraqi Journal for Computer Science and Mathematics: Vol. 6: Iss. 3, Article 16. DOI: https://doi.org/10.52866/2788-7421.1291.
Available at: https://ijcsm.researchcommons.org/ijcsm/vol6/iss3/16.