Engineering Commons^™

Exploring Patterns And Growth In Motor Vehicle Registrations Through Data Visualization, Ensar Krasniqi, Shkurte Luma Osmani, Florim Idrizi, Ermira Memeti

UBT International Conference

This research examines the patterns and trends of motor vehicle registrations in North Macedonia's municipalities between 2012 and 2023. The analysis, which breaks down vehicle types by year, includes motorcycles, passenger cars, buses, and freight vehicles. Every year, the data is arranged into blocks of nine columns, each of which includes comprehensive information for each town. Finding significant insights, such as growth patterns, changes in the popularity of particular vehicle types, and geographical variations, is the aim of this investigation. The project provides a thorough understanding of the evolution of automobile registrations in the nation over time by processing and …

Prime Numbers Through The Ages: Implementing The Sieve Of Eratosthenes In Java, Vesë Vrellaku, Hizer Leka, Alma Novoberdaliu

UBT International Conference

The Sieve of Eratosthenes is one of the oldest yet most efficient algorithms for finding prime numbers up to a given limit. This paper presents an analytical and practical implementation of the sieve, focusing on its mathematical foundations and optimized algorithmic behavior using the Java programming language. The aim is to demonstrate how ancient mathematical logic continues to be applicable in modern computational practices. The study outlines the basic sieve method, explores three critical optimizations that reduce time complexity, and evaluates the algorithm's performance in different scenarios. Moreover, this work contrasts the classical approach with similar prime-finding algorithms and emphasizes …

Digital Technologies For Modernizing Coal-Based Power Systems In Kosovo, Avni Alidemaj, Arbnor Lekaj

UBT International Conference

Proper management of electrical energy and its efficient use have gained increasing importance in recent decades due to the growing demand for energy and the need for environmental sustainability. In this context, the development of modern technologies for building automation and energy management has become an essential part of the technological transformations within the energy and construction sectors. This approach not only aims to reduce energy consumption but also contributes to creating a greener and more sustainable environment, while simultaneously enhancing safety, comfort, and control for users. This paper addresses the design and implementation of an intelligent system for energy …

The Role Of Coal In The Implementation Of The Green Transition Agenda In Kosovo, Nexhmi Krasniqi, Armend Ymeri

UBT International Conference

The recent global energy crisis—fueled by geopolitical tensions, increased energy demand, and persistent dependence on fossil fuels—has highlighted the fragility of current energy systems and the urgent need for a sustainable transformation. High and inefficient energy consumption, closely linked to industrial growth and urban development, continues to undermine ecological balance and accelerate climate change. While technological progress has improved access to renewable sources and advanced energy systems, it has not yet reached the scale or pace required to fully counteract the environmental consequences of unsustainable practices. In response, the European Union has placed the Green Transition and full Decarbonization at …

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 …

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, …

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 …

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 …

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 …

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 …

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 …

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, …

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, …

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 …

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 …

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, …

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 …

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 …

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 …

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 …

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 …

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 …

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 …

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 …

Regional Amphibious Aircraft Preliminary Design, Giovanna Ucles

Discovery Day - Daytona Beach

This project presents the preliminary design of a regional amphibious aircraft, aimed at servicing a variety of missions in areas with limited infrastructure. Currently, aircraft options for operations in challenging environments are limited, with most designs relying on float-like structures. This new design reintroduces the flying boat concept, offering reduced drag and improved operational efficiency. Two configurations are proposed: a 19-passenger version with a range of at least 350 nautical miles, and a 10-passenger version with a range of at least 980 nautical miles, both achieving a minimum cruise speed of 150 knots. Hand calculations were employed to assess key …

14th International Conference On Business, Technology And Innovation 2025, University For Business And Technology - Ubt

UBT International Conference

Welcome to IC – UBT 2025

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 …

Project Eggroll, Oriana Zhu

Discovery Day - Daytona Beach

Trainer aircraft present a unique fuel efficiency issue – the aircraft will almost never fly at its most efficient configuration simply due to the nature of pilot training. Taking this into account, Project Eggroll will be tackling this issue at the beginning of fuel consumption, rather than optimizing aerodynamics, and will be incorporating a hybrid propulsion system in a next-generation trainer aircraft to reduce fuel consumption, noise, and cost for consumer. After filtering through multiple potential configurations for the aircraft and powertrain, the ER-01 trainer aircraft’s final design has been refined to a high wing aircraft with an all-movable horizontal …

Internal Structural Design For Low-Cost Unmanned Fighter/Interceptor Aircraft, Andrew Zubyk

Discovery Day - Daytona Beach

Akriveia Aerospace is focused on the design of a high strength and efficient structure to accommodate the small size of Akriveia Aerospace’s Accipiter aircraft while ensuring the structure’s ability to sustain the required loadings. Emphasis is placed on wing spar, fuselage bulkhead, bulkhead-to-spar bracket, skin, and spar web sizing; as well as the fasteners used to join the structural components. The Accipiter was inspired based on historical and modern fighter/interceptor aircraft, such as the F-16 Fighting Falcon and F-35 Joint Strike Fighter. Preliminary sizing was conducted using conventional evaluation techniques; future aims involve validation using Finite Element Analysis. Due to …

Hybrid-Electric Regional Passenger Aircraft: Emphasizing Environmentally Impactful Technology, Annabelle Stube

Discovery Day - Daytona Beach

The aviation industry has significant negative impacts on the environment through greenhouse gas emissions and noise pollution. As small passenger aircraft tend to have more emissions per passenger mile than larger aircraft, this project aims to design a new hybrid-electric propulsion aircraft to be an innovative environmentally conscious option for short-range, limited-passenger flights. The design process focuses on constraint analyses, high stability, emission and noise reduction, uniqueness and marketability, and utilizing upcoming propulsion systems. Several new propulsion system options were assessed to prioritize viability and power and minimize environmental impacts. The hybrid-electric propulsion system and 12-passenger capacity were decided to …

Wing Structure Design The Ramp-200, Nicholas Hillburn

Discovery Day - Daytona Beach

This project focuses on the design of the wing structure to increase fatigue resistance and lessen the shear force across the skin of the wings, while maintaining the structure’s stability and soundness. The designed wing structure will be optimized to account for the proposed weight and endurance of the aircraft. The overall wing shape and size was defined using preliminary design methods and optimized for efficiency at Mach 0.9. The main structures were sized using calculations that were programmed into MATLAB and supported by hand calculations. Finite element analysis was used to verify sizing, and the structures were assessed using …