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German Reddit Sentiment Analysis Using Bert And Ml Techniques, Bledi Buduri Oct 2025

German Reddit Sentiment Analysis Using Bert And Ml Techniques, Bledi Buduri

UBT International Conference

This study presents a comprehensive workflow for collecting, preprocessing, and analyzing German-language comments from Reddit for sentiment analysis. Initially, a Pythonbased scraper using the Reddit API was developed to extract topic-specific comments, which were then cleaned by removing special characters, links, and irrelevant tokens. The dataset underwent tokenization, stopword removal, and normalization using stemming and lemmatization to produce a structured corpus suitable for machine learning tasks.Sentiment classification was performed using the German BERT model (oliverguhr/german-sentimentbert), categorizing comments as positive, negative, or neutral. To further evaluate performance, vectorization techniques such as Bag-of-Words and TF-IDF were applied, followed by machine learning classifiers …

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Green Data Pipelines: Ai-Driven Energy Optimization For Sustainable Cloud Workloads, Erina Salihu, Anduena Syla Oct 2025

Green Data Pipelines: Ai-Driven Energy Optimization For Sustainable Cloud Workloads, Erina Salihu, Anduena Syla

UBT International Conference

The rapid proliferation of cloud computing workloads has intensified concerns about the high energy demand and environmental impact of large-scale data processing. As infrastructures expand, data centers now account for a growing share of global electricity consumption and carbon emissions. This study presents a green data-pipeline architecture that integrates AI-driven scheduling with advanced resource-management techniques to reduce energy use in cloud-native environments. The architecture combines modern data-engineering platforms, including Apache Airflow for workflow orchestration, Databricks (Spark) for computation, PostgreSQL as an analytical warehouse, and dbt for data transformation. It is coordinated by a reinforcement-learning agent that dynamically optimizes workload placement …

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The Role Of Artificial Intelligence In Developing Interactive And Intelligent Web Applications, Shkurte Zhegrova, Faton Kabashi, Mirlinda Selimaj, Vehebi Sofiu, Laura Gjikokaj Oct 2025

The Role Of Artificial Intelligence In Developing Interactive And Intelligent Web Applications, Shkurte Zhegrova, Faton Kabashi, Mirlinda Selimaj, Vehebi Sofiu, Laura Gjikokaj

UBT International Conference

This study explores the integration of Artificial Intelligence (AI) into web programming, a field that has been rapidly transformed by the advancement of modern technologies. AI represents not only a relatively new and revolutionary innovation but also a crucial factor shaping the future of humanity, raising both opportunities for progress and concerns about potential workforce replacement in certain domains. The research begins with an overview of the history and evolution of AI, followed by an examination of its role in optimizing processes, addressing technical challenges, and enhancing user experiences in web development. With capabilities such as processing large datasets, learning …

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Review Of Soa Transition To Microservices And Beyond, Arbnesha Berisha Qerimaj, Merita Kasa Halili, Festim Halili Oct 2025

Review Of Soa Transition To Microservices And Beyond, Arbnesha Berisha Qerimaj, Merita Kasa Halili, Festim Halili

UBT International Conference

Oriented Architectures ( SOA ) emerged as a paradigm for distributed com-putting, e-business processing and enterprise integration. The benefits of SOA are multifaceted. It provides dynamism, as new in-stances of the same service can be launched to split the load on the system. Although microservices can be seen as an evolution of SOA, they are inherently different regarding sharing and reuse. SOA is built on the idea of fostering reuse: “a share as much as possible” architecture style, whereas microservice architectures seconds the idea of a “share as little as possible” architecture style: the goal became how to build systems …

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International Conference On Computer Science And Communication Engineering, University For Business And Technology (Ubt) In Kosovo Oct 2025

International Conference On Computer Science And Communication Engineering, University For Business And Technology (Ubt) In Kosovo

UBT International Conference

UBT Annual International Conference is the 14th international interdisciplinary peer reviewed conference which publishes works of the scientists as well as practitioners in the area where UBT is active in Education, Research and Development. The UBT aims to implement an integrated strategy to establish itself as an internationally competitive, research-intensive university, committed to the transfer of knowledge and the provision of a world-class education to the most talented students from all background. The main perspective of the conference is to connect the scientists and practitioners from different disciplines in the same place and make them be aware of the recent …

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Thermo-Mechanical Behaviour Of A Long-Span Precast Industrial Building, Marco Bizzozero, Francesco Daniele, Bruno Dal Lago Oct 2025

Thermo-Mechanical Behaviour Of A Long-Span Precast Industrial Building, Marco Bizzozero, Francesco Daniele, Bruno Dal Lago

UBT International Conference

Fire safety in precast concrete industrial buildings is a key concern in structural engineering due to their complex thermo-mechanical behaviour under high temperatures. This study examines how different modelling strategies and fire scenarios affect their global structural response, supporting performance-based design and safety evaluation. A representative precast building, composed of reinforced and prestressed concrete elements, is analysed through finite element simulations using SAFIR software. The ISO 834 nominal fire curve is compared with natural fire scenarios with load equivalent to 60 and 120 minutes of nominal fire duration. Both 2D and 3D models are developed, accounting for second-order effects, prestressing, …

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Dimensional Stability And Hydric Behavior Of Lime-Slag Stabilized Compressed Earth Blocks, Ines Bouteldja, Khaled Grine, Said Kenai Oct 2025

Dimensional Stability And Hydric Behavior Of Lime-Slag Stabilized Compressed Earth Blocks, Ines Bouteldja, Khaled Grine, Said Kenai

UBT International Conference

This study investigates the dimensional behavior of compressed earth blocks stabilized with 4% lime and varying amounts of ground granulated blast furnace slag (GGBS). Four formulations containing 0, 4, 8, and 12% slag were tested to evaluate linear shrinkage, swelling, and capillary absorption. The results show that increasing slag content leads to a consistent reduction in both shrinkage and swelling, indicating improved dimensional stability. For the mixture containing 12% slag, shrinkage and swelling decreased by about 27% compared to the reference, while capillary absorption dropped by nearly 70%. These improvements are attributed to matrix densification and reduced capillarity resulting from …

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Precast Concrete Panels In Fire, Francesco Daniele, Bruno Dal Lago Oct 2025

Precast Concrete Panels In Fire, Francesco Daniele, Bruno Dal Lago

UBT International Conference

Precast concrete panels are widely used as compartmentation or cladding systems in buildings with fire safety requirements. Although the live loads acting on such panels under service conditions are generally negligible, in fire conditions failures often arise from the malfunction or collapse of their connection systems. When exposed to fire, panels undergo significant thermal deformation, including elongation and deflection, which may compromise structural integrity and lead to connection failure. This study investigates the deformative behaviour of monolithic solid precast panels under fire exposure through non-linear heat transfer and thermomechanical analyses. Based on the results, a practical nomogram is proposed to …

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Role Of Transport Management In Workforce Wellbeing In A Time Of Green And Digital Transition, Neli Lalkovska Oct 2025

Role Of Transport Management In Workforce Wellbeing In A Time Of Green And Digital Transition, Neli Lalkovska

UBT International Conference

In the time of green and digital transition and AI invasion, human resource management needs to be transformed. New technologies optimize processes but also pose challenges as risks associated with remote work, social isolation, lack of communication, increased stress, and the need for continuous learning. This paper explores the level of awareness of rail, auto, logistics, and aviation transport management in Bulgaria to provide conditions for digital wellbeing - the physical and mental health of HR. For the study, 72 managers answered a questionnaire. A link is made between human and planetary health, climate change, and the level of green …

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The Impact Of Water On Concrete Quality, Ibush Luzha, Bujar Aliu, Teodor Zguro Oct 2025

The Impact Of Water On Concrete Quality, Ibush Luzha, Bujar Aliu, Teodor Zguro

UBT International Conference

Water is vital to concrete, and it has a dual role. This paper will examine the impact of the quantity (water/cement ratio - W/C) and water quality on concrete. W/C directly affects workability, mechanical strength, porosity, and durability. A low W/C gives stronger concrete but with difficult workability; a high W/C improves workability but weakens mechanical properties and durability. Water quality is also critical; impurities such as chlorides, sulfates, and organic substances can negatively affect cement bonding and strength, cause corrosion of reinforcement, and degradation. Water is also essential for curing, which maximizes strength and durability. Therefore, strict control of …

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Comparatıve Performance Analysıs Of Data Storage Systems (Json, Sqlıte, Postgresql) In A Log Analysıs Applıcatıon, Edison Alushaj, Alma Novoberdaliu Oct 2025

Comparatıve Performance Analysıs Of Data Storage Systems (Json, Sqlıte, Postgresql) In A Log Analysıs Applıcatıon, Edison Alushaj, Alma Novoberdaliu

UBT International Conference

In this thesis, a comparative performance analysis of different data storage systems, namely: JSON, SQLite, and PostgreSQL, has been conducted within the framework of a log analysis application. For each technology—JSON, SQLite, and PostgreSQL—the analysis will follow an identical structure. Initially, the history and the philosophy behind their creation will be examined. Subsequently, the architecture and key technical characteristics that influence performance will be detailed. The main objective of this study is to evaluate the efficiency, response time, resource utilization, and the degree of scalability of each system in various processes of log data management and analysis. The use of …

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Development Of Advanced Algorithms For Autonomous Vehicle Navigation, Liridon Hoti, Besnik Qehaja, Jeton Sllamniku Oct 2025

Development Of Advanced Algorithms For Autonomous Vehicle Navigation, Liridon Hoti, Besnik Qehaja, Jeton Sllamniku

UBT International Conference

This paper addresses the development of advanced algorithms for autonomous vehicle navigation, focusing on the creation of an intelligent platform capable of safely planning and managing vehicle movement without human intervention. The main objective is to design a functional and reliable system by applying modern artificial intelligence techniques, optimization methods, and sensor data processing (sensor fusion). The study begins with a review of the existing literature on autonomous navigation, identifying key approaches such as Machine Learning, Simultaneous Localization and Mapping (SLAM), and Path Planning. It then presents the development methods for the autonomous navigation system using machine learning through simulation, …

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High-Performance Sha-256-Based Request Signing: A Comparative Study Of Standard And Custom Implementations, Gentrit Halimi, Rigon Pira, Argjend Azizi Oct 2025

High-Performance Sha-256-Based Request Signing: A Comparative Study Of Standard And Custom Implementations, Gentrit Halimi, Rigon Pira, Argjend Azizi

UBT International Conference

Ensuring data integrity in modern software integrations with third-party providers is critical for secure communication and reliable transaction processing. This study focuses on implementing SHA-256 hashing for verifying the authenticity and integrity of HTTP requests. Two approaches are analyzed: the built-in .NET SHA-256 implementation and a fully custom SHA-256 algorithm implemented from first principles. Both methods are evaluated for correctness, security, and performance. Experimental results demonstrate that the custom implementation achieves comparable security guarantees while offering improved execution speed and minimal memory usage. The findings highlight the relevance of SHA-256 in protecting data against tampering and its suitability for high-performance, …

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Continuous Integration And Continuous Deployment (Ci/Cd) In Modern Software Engineering: A Comparative Study Of Jenkins And Github Actions, Zana Sadiku, Lavdim Beqiri Oct 2025

Continuous Integration And Continuous Deployment (Ci/Cd) In Modern Software Engineering: A Comparative Study Of Jenkins And Github Actions, Zana Sadiku, Lavdim Beqiri

UBT International Conference

The rapid evolution of software delivery models has shifted the focus from manual releases toward fully automated pipelines. Continuous Integration and Continuous Deployment (CI/CD) have become central pillars of modern software engineering, enabling faster iterations, early defect detection, and consistent delivery across environments. Among the most widely adopted tools for implementing CI/CD are Jenkins, an open-source automation server known for its extensibility, and GitHub Actions, a cloud-native CI/CD platform tightly integrated with GitHub repositories. This paper provides a comparative analysis of Jenkins and GitHub Actions in the context of DevOps practices, focusing on setup complexity, scalability, customization, integration flexibility, and …

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Computational Analysis Of Gdp, Inflation, And Unemployment Trends In The Western Balkans, Adea Krasniqi, Vehbi Neziri Oct 2025

Computational Analysis Of Gdp, Inflation, And Unemployment Trends In The Western Balkans, Adea Krasniqi, Vehbi Neziri

UBT International Conference

Using computational econometric techniques, this study examines three important macroeconomic indicators over a multi-year period: GDP growth, inflation, and unemployment. The study uses a Python-based analytical pipeline for data processing, visualization, and interpretation by integrating cross-sectional and time-series data from trustworthy sources. The methodology evaluates indicator behavior under different economic conditions by using statis- tical learning and segmentation across multiple temporal phases. Based on the research outcomes, traditional macroeconomic frameworks, such as Okun's Law and the Phillips Curve, exhibit limited predictive accuracy across heterogeneous economic environments, particularly when incorporating the effects of global disruptions. The research presents a modular analytical …

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The Use Of Artificial Intelligence In Medicine: Benefits And Risks, Aurela Gashi, Faton Kabashi, Vehebi Sofiu, Mirlinda Selimaj, Laura Gjikokaj Oct 2025

The Use Of Artificial Intelligence In Medicine: Benefits And Risks, Aurela Gashi, Faton Kabashi, Vehebi Sofiu, Mirlinda Selimaj, Laura Gjikokaj

UBT International Conference

Artificial Intelligence (AI) is increasingly transforming the field of medicine by enabling rapid and precise diagnosis, personalized therapies, and advanced data management. From interpreting complex medical images to predicting chronic disease risks and tailoring treatments for individual patients, AI demonstrates unprecedented potential to enhance healthcare outcomes. However, alongside these opportunities emerge critical challenges and risks. Biased training datasets may lead to inaccurate diagnoses, while concerns over data privacy and ethical responsibility raise fundamental questions about the limits of automation in healthcare. This paper emphasizes that the integration of AI should not aim to replace physicians but rather to support them, …

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Comparative Analysis Of Monolithic And Microservices Architectures In Web Development, Denis Bajçinca, Faton Kabashi, Laura Gjikokaj, Mirlinda Selimaj, Lamir Shkurti Oct 2025

Comparative Analysis Of Monolithic And Microservices Architectures In Web Development, Denis Bajçinca, Faton Kabashi, Laura Gjikokaj, Mirlinda Selimaj, Lamir Shkurti

UBT International Conference

This study examines the comparison between monolithic and microservices architectures in web application development, focusing on their impact on performance, scalability, maintainability, and complexity management. Through a review of the literature and practical analysis of real-world case studies, Netflix (representing monolithic architecture) and Etsy (representing microservices architecture) were evaluated using key performance and technical efficiency metrics, employing tools such as Google Lighthouse and HAR file analysis. Tests were conducted on both desktop and mobile platforms to assess architectural influence under varying conditions. Findings indicate that monolithic architecture provides stable performance and centralized control, particularly on desktop platforms, while microservices offer …

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Friends Recommendation In Dynamic Social Networks Using Breadth-First Search Algorithm, Rigon Pira, Jeta Domi, Besnik Qehaja, Edmond Hajrizi Oct 2025

Friends Recommendation In Dynamic Social Networks Using Breadth-First Search Algorithm, Rigon Pira, Jeta Domi, Besnik Qehaja, Edmond Hajrizi

UBT International Conference

Social networks are constantly evolving, and recommending new con- nections is essential for improving user engagement. This paper proposes a friend recommendation system using the Breadth-First Search (BFS) algorithm on dy- namic graphs, offering a simple, scalable, and efficient solution. The network is modeled as an undirected graph, where users are vertices and friendships are edges. BFS explores the graph level by level, identifying potential friends through mutual connections while excluding existing friends. An adjacency list representation ensures memory efficiency and supports real-time updates. Can- didate friends are ranked by the number of shared mutual connections, with higher counts indicating …

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Audio Signal Compression Using Wavelet Transform: A Matlab Implementation, Rigon Pira, Argjend Azizi, Gentrit Halimi, Zhilbert Tafa Oct 2025

Audio Signal Compression Using Wavelet Transform: A Matlab Implementation, Rigon Pira, Argjend Azizi, Gentrit Halimi, Zhilbert Tafa

UBT International Conference

In modern signal processing, the need to efficiently analyze and store non- stationary signals has become increasingly important, particularly for audio applications where both time and frequency localization are essential. Traditional Fourier-based methods provide global frequency information but fail to indicate when these frequencies occur, making them suboptimal for real-world, time-var- ying signals. This paper investigates the use of wavelet transforms, specifically the Daubechies wavelet for audio signal compression. A practical implementa- tion is developed in MATLAB, where the discrete wavelet transform (DWT) is applied to decompose audio signals into approximation and detail coefficients. Thresholding techniques are employed to remove …

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Digital Technologies For Modernizing Coal-Based Power Systems In Kosovo, Agron Bislimi, Arbesa Nikaj Oct 2025

Digital Technologies For Modernizing Coal-Based Power Systems In Kosovo, Agron Bislimi, Arbesa Nikaj

UBT International Conference

Kosovo continues to rely heavily on lignite for its electricity generation, making coal a dominant and unavoidable part of its energy landscape for the foreseeable future. Rather than pursuing an abrupt replacement, this paper advocates for the modernization of existing coal infrastructure through digital technologies that enhance efficiency, reduce emissions, and improve operational transparency. Smart monitoring, predictive maintenance, and real-time control systems are emphasized as cost-effective solutions to improve the performance of current power plants. At the same time, these digital upgrades lay the foundation for the gradual integration of renewable energy sources, particularly solar and wind, into the power …

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Retracted: Analysis Of Energy Sector Co2 Emanations Using Wavelet-Based Numerical Technique, Yeshwanth R., Kumbinarasaiah S. Oct 2025

Retracted: Analysis Of Energy Sector Co2 Emanations Using Wavelet-Based Numerical Technique, Yeshwanth R., Kumbinarasaiah S.

Iraqi Journal for Computer Science and Mathematics

This study aims to present the modified Chebyshev wavelet collocation method (CWCM) to investigate and obtain the numerical approximation of $CO_2$ emissions from the energy sector utilizing the fractional mathematical model. The need for energy rises as the population grows. Burning fossil fuels produces a significant portion of the world's energy, which raises the atmospheric concentration of $CO_2$ and causes global warming. The combination of mathematical modeling studies and numerical simulations allows us to understand the $CO_2$ emissions from the energy sector. Our objective is to build an operational matrix of integration (OMI) based on Chebyshev wavelets and use it …

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Numerical Simulations Of The Overburden Stability In Underfilling Zones During Continuous Mining And Continuous Backfilling Of Coal Mines, Liu Lang, Luo Yixiao, Zhu Mengbo, He Jun, Qu Huisheng, Duan Huaijun, Wei Baoning, Liu Zhizhen Oct 2025

Numerical Simulations Of The Overburden Stability In Underfilling Zones During Continuous Mining And Continuous Backfilling Of Coal Mines, Liu Lang, Luo Yixiao, Zhu Mengbo, He Jun, Qu Huisheng, Duan Huaijun, Wei Baoning, Liu Zhizhen

Coal Geology & Exploration

Objective and Method Coals serve as a predominant energy source in China. However, coal mining has resulted in increasingly pronounced ecological issues such as ground subsidence and solid waste accumulation. Although the continuous mining and continuous backfilling (CMCB) technology allows for efficient resource recovery and ecological protection through backfilling with coal-based solid waste, the issue of insufficient roof-contact backfilling (termed underfilling) poses a serious threat to the overburden stability during mining. Given the unclear mechanisms behind the influence of coupled multiple factors of underfilling zones in current research, this study constructed three-dimensional numerical models using the 3DEC discrete element software …

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Response Characteristics Of Vegetation Ecology And Land Use Changes Tocoal Mining In Semi-Arid Regions, Du Zhen, Zhang Maosheng, Yun Shaoqi, Sun Pingping, Feng Li Oct 2025

Response Characteristics Of Vegetation Ecology And Land Use Changes Tocoal Mining In Semi-Arid Regions, Du Zhen, Zhang Maosheng, Yun Shaoqi, Sun Pingping, Feng Li

Coal Geology & Exploration

Objective In semi-arid regions, intensive coal mining is prone to induce vegetation degradation and reshape the land use pattern. To identify the ecological impacts of coal mining and provide support for differential restoration, this study presents a quantitative comparison of changes in vegetation, soil moisture content, and land use types between mining-affected and non-mining areas.Methods Yulin City, Shaanxi Province was investigated in this study. Two parallel baseline frameworks were constructed: mining-affected and non-mining areas, which were compared under the sandy-fluvial terrace and loess hilly-gully landforms. The annual maximum normalized difference vegetation index (NDVI) derived from Landsat imagery was used …

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Water Immersion-Induced Damage Mechanisms And Enhancement Via Nano-Modification For Artificial Dam Specimens With Vertical Interfaces, Li Yijia, Hao Xianjie, Chen Yuguang, Pang Tian, Yang Huaixiang, Li Hang, Ji Jinyi, Li Xinyu Oct 2025

Water Immersion-Induced Damage Mechanisms And Enhancement Via Nano-Modification For Artificial Dam Specimens With Vertical Interfaces, Li Yijia, Hao Xianjie, Chen Yuguang, Pang Tian, Yang Huaixiang, Li Hang, Ji Jinyi, Li Xinyu

Coal Geology & Exploration

Objective To accelerate ecological protection and high-quality development in the Yellow River basin, the concept of “conductivity, storage, and utilization” has been proposed to achieve the mine water storage and protection by transforming goafs into underground reservoirs and utilizing waterproof concrete dams. However, under the action of long-term water immersion and mining activity, the interfaces of composite concrete dam structures might undergo strength degradation, leading to hidden hazards. Methods By incorporating 0.5% and 1.0% nano-SiO2, -Al2O3, and -TiO2, this study prepared specimens with one vertical interface each that comprised double semi-cylinders through …

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Building And Geological Interpretation Of A 3d Resistivity Model For The Reclamation Area Of The Jiaozhou Bay, Yu Peng, Zhao Mingyue, Yang Haiyan, Li Wenyu, Tian Jian, Yan Houzhen, Zhang Chao Oct 2025

Building And Geological Interpretation Of A 3d Resistivity Model For The Reclamation Area Of The Jiaozhou Bay, Yu Peng, Zhao Mingyue, Yang Haiyan, Li Wenyu, Tian Jian, Yan Houzhen, Zhang Chao

Coal Geology & Exploration

Background With the advancement in smart city construction in China, the development and utilization of urban underground space have become a focal point. Geophysical methods, as a crucial technical means for underground geological structure exploration, face new challenges when applied to complex exploration environments in urban areas. Objectives and Methods To address issues in underground space exploration in the coastal area of Qingdao, this study investigated the reclamation area along the eastern coast of the Jiaozhou Bay. Using a detection technique that combined the transient electromagnetic method (TEM) using a conical source and high-density resistivity method, this study constructed a …

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Risk Prediction Of Surface-Water Bursting In The Gully-Crossing Mining Section Of Shallow Coal Seams Within Thin Bedrock Zones, Niu Chao, Luo Yutao, Liu Ning, Xiao Lele, Sun Qiang, Zhang Weiwei, Xue Xicheng, Zeng Dabao, Bai Yang Oct 2025

Risk Prediction Of Surface-Water Bursting In The Gully-Crossing Mining Section Of Shallow Coal Seams Within Thin Bedrock Zones, Niu Chao, Luo Yutao, Liu Ning, Xiao Lele, Sun Qiang, Zhang Weiwei, Xue Xicheng, Zeng Dabao, Bai Yang

Coal Geology & Exploration

Background The gully-crossing mining of shallow coal seams within thin bedrock zones is prone to connecting hydraulically conductive fracture zones in the overburden with surface water bodies, significantly increasing the risk of water disasters, such as water inrushes and surface-water bursting in mines. Some mining faces in the Shandong Coal Mine, Shaanxi Province are located beneath the Shajie Gully basin, where storm runoff is highly likely to flow into the underground mine through mining-induced fractures, posing a serious threat to mine safety. Therefore, there is an urgent need to research risk identification and assessment of surface-water bursting. Methods This study …

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Influence Patterns Of Nanomaterials On The Properties Of Ultrafine Sulfoaluminate Cement, Li Xiaolin, Wang Pengfei, Gao Yinghui, Zhang Mingxuan, Dong Enyuan, Qu Yue, Zhao Yue Oct 2025

Influence Patterns Of Nanomaterials On The Properties Of Ultrafine Sulfoaluminate Cement, Li Xiaolin, Wang Pengfei, Gao Yinghui, Zhang Mingxuan, Dong Enyuan, Qu Yue, Zhao Yue

Coal Geology & Exploration

Objective and Methods This study aims to reduce the economic cost of sulfoaluminate cement-based grouting materials while also achieving excellent grouting reinforcement effects. To this end, it investigated the variation patterns of the compressive strength, setting time, and fluidity of the ultrafine fly ash (UFA)-ultrafine sulfoaluminate cement (USC) system by incorporating different dosages of silica fume (SF) and nano-silica (NS). Furthermore, the mechanisms behind the hydration reactions of the system were explored. Using multiple distinct testing techniques such as X-ray diffraction (XRD) mineralogy, Fourier transform infrared spectroscopy (FTIR), thermogravimetric-differential thermal analysis (TG-DTA), and scanning electron microscopy (SEM), this study analyzed …

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Online Cyber-Physical Neural Network Model For Real-Time Hybrid Simulation, Faisal Nissar Malik, Liang Cao, James Ricles, Austin Downey Oct 2025

Online Cyber-Physical Neural Network Model For Real-Time Hybrid Simulation, Faisal Nissar Malik, Liang Cao, James Ricles, Austin Downey

Faculty Publications

Real-time hybrid simulation (RTHS) is an experimental testing methodology that divides a structural system into an analyticaland an experimental substructure. The analytical substructure is modeled numerically, and the experimental substructure ismodeled physically in the laboratory. The two substructures are kinematically linked together at their interface degrees of freedom,and the coupled equations of motion are solved in real-time to obtain the response of the complete system. A key challenge inapplying RTHS to large or complex structures is the limited availability of physical devices, which makes it difficult to representall required experimental components simultaneously. The present study addresses this challenge by introducing …

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Structural Characteristics Of The Overburden And Water Yield Property Of Weathered Bedrock Aquifer In A Representative Medium-Deep Coal Seam, Wang Lu, Hua Zhaolai, Huang Hao, Li Zenglin, Ren Shuaifeng, Wang Sitong Oct 2025

Structural Characteristics Of The Overburden And Water Yield Property Of Weathered Bedrock Aquifer In A Representative Medium-Deep Coal Seam, Wang Lu, Hua Zhaolai, Huang Hao, Li Zenglin, Ren Shuaifeng, Wang Sitong

Coal Geology & Exploration

Background The weathered bedrock aquifer represents a major water-filled aquifer encountered during coal mining in the Jurassic coalfield in northern Shaanxi Province. Therefore, evaluating the water yield property of the weathered bedrock aquifer is the key to the prevention and control of water hazards in coal seam roofs. Methods This study investigated panel 12 of the Caojiatan Coal Mine, Shaanxi Province. Analysis of the stratigraphic and lithological structure types of the overburden of coal seam 2–2 identified the weathered bedrock as the primary overlying water-bearing aquifer of the coal seam. Using net-to-gross (NTG) ratio, sandstone thickness, weathering influence index, …

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An Experimental Study On The Breakthrough Pressure Of Different Co2 Phases Against Cap Rocks For Carbon Storage In Saline Aquifers, Dan Wendong, Li Yi, Wang Fugang, Hu Zhikai, Diao Yujie, Ma Xin, Liu Ting Oct 2025

An Experimental Study On The Breakthrough Pressure Of Different Co2 Phases Against Cap Rocks For Carbon Storage In Saline Aquifers, Dan Wendong, Li Yi, Wang Fugang, Hu Zhikai, Diao Yujie, Ma Xin, Liu Ting

Coal Geology & Exploration

Objective CO2 breakthrough pressure, a core parameter for characterizing the sealing performance of saline aquifers as cap rocks, holds important scientific significance and application value for ensuring the safety of CO2 geological storage engineering and assessing its storage potential. However, there is a lack of systematic studies on the variation patterns and mechanisms of breakthrough pressure under different occurrence phases of CO2 (supercritical, liquid, and gaseous) currently. Accordingly, universal and reliable conclusions are yet to be reached. Methods This study conducted experiments on a natural low-permeability unsaturated sandstone core. Using the step-by-step method, 13 groups of breakthrough …

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