10 results for "Zlatko Zafirovski"
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Journal Article
EVALUATION OF RAILWAY TRACK DEGRADATION RATE BASED ON TQI TRENDS: A CASE STUDY OF THE KOLASIN–PODGORICA SECTION
Understanding the rate of track degradation is essential for effective railway infrastructure management, particularly in mountainous and geotechnically unstable regions. This paper presents a comprehensive analysis of the track geometry degradation on the Kolašin–Podgorica railway section in…
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Journal Article
APPROACH FOR DEFINING THE LIMIT VALUE OF THE STOPPING SIGHT DISTANCE ON THE ROADS IN THE REPUBLIC OF NORTH MACEDONIA
The most of the existing road network in the Republic of North Macedonia consists of sections that in the past were designed to provide the most durable and permanent engineering solutions of the carriageway, with minimal commitment to the road geometry. The visibility on the road is a key…
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Journal Article
Predicting unsafe road sections using machine learning
This paper presents an ML methodology to predict hazardous road segments, using the weighted accident index (Wi). The analysis covers 161 road segments in North Macedonia (~1,300 km)—with 23+1 variables categorized into Road, Traffic, Environmental, and Accident data. Feature influence is evaluated…
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Journal Article
CONTEMPORARY METHODS FOR SOIL AND WATER PROTECTION FROM THE IMPACT OF RAILWAY TRAFFIC
One of the basic assignments of modern society is preserving the quality of freshwater resources, especially drinking water. Line facilities potentially pose a higher risk to the environment due to the large length of the extension and the diversity of the environment they may affect. Storm water…
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Journal Article
Data-Driven Water Demand Prediction: Evaluating Artificial Intelligence Models
Water resource management is crucial in contemporary society due to climate change and water scarcity. These challenges are further exacerbated by rapid urbanization, which leads to an increase in water demand in cities caused by factors such as population growth, industrialization, densification…
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Journal Article
Neural Network-Based Model for Predicting Preliminary Construction Cost as Part of Cost Predicting System
A model for early construction cost prediction is useful for all construction project participants. This paper presents a combination of process-based and data-driven model for construction cost prediction in early project phases. Bromilow’s “time-cost” model is used as process-based model and…
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Journal Article Full text
Data-Driven Prediction of Track Quality Index (TQI): A Comparative Study of Statistical and Ensemble Learning Models—A Case Study of the Kolashin–Podgorica Railway
Maintaining the geometric quality of railway tracks is essential for safe and efficient operations. This study examines the prediction of the Track Quality Index (TQI) using Multiple Linear Regression (MLR) and Random Forest (RF) models, based on inspection data from the mountainous…
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Journal Article
SUBBASE STABILIZATION WITH FLY ASH
Due to increased activities in civil engineering, and especially in the transport infrastructure, and thus an increase in the use of additional construction materials, innovative solutions are needed in finding alternative materials for the preservation of natural resources. One of the solutions…
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Journal Article Full text
Parametric Study of Additional Temperature Stresses in Continuously Welded Rails on Steel Truss Railway Bridges
Additional temperature stresses in continuously welded rails (CWRs) are caused by track/bridge interaction (TBI) due to thermal actions. Exceeding permissible stresses in CWRs on the bridge can lead to track buckling or rail cracking, compromising the safety of railway traffic. The main aim of the…
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Journal Article
Numerical Modeling of Tunnel Excavation and Support Using the Deconfinement Method for Static and Seismic Conditions
In this paper, an analysis of the phase construction of a tunnel with support in static and seismic conditions is made. The PLAXIS 2D software package was used for the problem's numerical modelling. A parametric analysis of the excavation using the deconfinement method (1-ß) was made on an actual…