Analecta Technica Szegedinensia

Wireless Sensor Network Based Localization for Enhanced Device Tracking in Healthcare Environments

Laszlo Gogolak — 2025-05-15

The growing demand for accurate, real-time indoor positioning in healthcare environments has led to the exploration of alternative localization technologies beyond traditional GPS. Hospitals face the challenge of tracking mobile diagnostic equipment and coordinating personnel under tight operational constraints. This paper presents a practical implementation of an indoor positioning system (IPS) within an outpatient medical facility in Hungary, designed to track the movement of a shared mobile ultrasound device. Three technologies were investigated: Wi-Fi (using RSSI fingerprinting), Bluetooth Low Energy (BLE) beacons, and Ultra-Wideband (UWB) with ToF-based trilateration. All solutions were implemented using ESP32 microcontrollers, supported by custom Arduino code and MATLAB for data analysis. Results show significant differences in accuracy and reliability, with UWB proving superior for precision-demanding medical use cases.

Determination of the Efficiency of Hydrocarbon Flow in the Onshore Tshiende-07 Well of the Coastal Basin of The Democratic Republic of the Congo

Lingwangasa Masaka — 2025-05-15

The general objective of this work is to determine the efficiency of the flow of hydrocarbons in the Tshiende 07 Well. To do this, we have set ourselves the following specific objectives: To carry out a study of the performance of Tshiende 07 wells; Calculate the productivity index of the Tshiende 07 well; Calculate the maximum flow rate in the Tshiende 07 well; Draw the Inflow Performance Relationship (IPR) curve; Determine the hydraulic parameters of the flow of hydrocarbons in a well; Draw the Tubing Performance Relationship (TPR) curve; Apply nodal analysis in the TS-07 well. As we have developed the different mathematical approaches for the optimization of the flow of hydrocarbons in a producing well, we exploited the Poettman-Carpenter mathematical approach, and since iterative calculations of this approach are tedious, we used the Poettmann-carpenter BH-xls software to know the evolution of the pressure in the tubing as a function of depth and Botthom Oil Nodal BH-xls to draw the Tubing Performance Relationship (TPR) curve and to determine the operating points between the curve IPR and TPR during nodal analysis.

The Future of Augmented Reality Application Development Trends and Opportunities

János Simon — 2025-05-19

The future of augmented reality (AR) application development is being shaped by emerging trends and expanding opportunities across various industries. In this study, key advancements in AR technology, including artificial intelligence integration, cloud computing, and 5G connectivity, are examined. The increasing adoption of AR in sectors such as healthcare, education, retail, and manufacturing are highlighted, emphasizing its role in enhancing user experiences and operational efficiency. The challenges related to hardware limitations, data security, and user privacy are also discussed. A review of current development frameworks and platforms is conducted, showcasing the evolution of AR tools and their impact on accessibility for developers. The shift toward web-based and cross-platform AR solutions is explored, demonstrating the growing demand for seamless and scalable applications. Additionally, opportunities for innovation in AR content creation, user interaction, and enterprise applications are identified. Through an analysis of these trends, it is concluded that AR development will continue to evolve, driven by advancements in computing power, sensor technology, and user demand. It is suggested that collaboration between researchers, developers, and businesses will play a crucial role in overcoming existing barriers and unlocking the full potential of AR applications in the future.

Securing IoT-Based Heating Control Systems in Critical Infrastructure: Challenges and Solutions

Boldizsár Bednárik — 2025-05-19

The integration of smart technology into heating systems has led to increased efficiency and remote management capabilities. However, these advancements also introduce security vulnerabilities, especially in critical infrastructure. This paper explores the development of an IoT-based heating control system utilizing MQTT, ESP8266 microcontrollers, and Node-RED for centralized management. The study examines system design, identifies potential security threats, and proposes strategies to mitigate risks. Additionally, real-world case studies illustrate how cybersecurity weaknesses have impacted similar IoT applications in critical infrastructure, reinforcing the importance of implementing robust security measures.

Optimization of Operational Parameters to Enhance Ultrafiltration Efficiency Using Dairy Wastewater Model

Aws Altayawi — 2025-05-19

Ultrafiltration is a key technology for treating dairy wastewater; however, its efficiency is often hindered by critical challenges such as membrane fouling and concentration polarization. To mitigate these issues, one effective approach involves optimizing operational parameters to enhance system performance and longevity. In this study the influence of key operational parameters on the performance of a lab-scale low-pressure ultrafiltration membrane system for treating dairy wastewater model were investigated. The optimization focused on three critical factors: transmembrane pressure (TMP), stirring speed, and membrane molecular weight cut-off (MWCO). Key performance metrics, including permeate flux, membrane retention efficiency, and total, reversible, and irreversible membrane resistances, were analyzed. The results showed that the optimal conditions were identified using a 20 kDa polyethersulfone membrane, with a TMP of 0.3 MPa and a stirring speed of 400 rpm. Statistical analysis was conducted to further refine and validate the optimization of these parameters.

Waste Management Problems in Laos

József Gál — 2025-05-19

This logistics case review delves into Laos’ various waste management problems highlighting different aspects of garbage collection and handling from an operational standpoint. This study involves an integrated approach taking into consideration both peer reviewed journal articles and results of primary research, as well as practical suggestions that are highly relevant to the country’s social-economic context as well as environmental conditions. The findings of this research improve comprehension of the main threats facing Laos and suggest environmentally friendly approaches for mitigation of adverse consequences of inadequate waste management.

The 2024 Ranking List of Hungarian Scientists in the Field of Scientometrics

Gyula Dr. Mester — 2025-05-19

The article presents the 2024 ranking of Hungarian researchers in the field of Scientometrics. The ranking is presented primarily according to the h-index of researchers. Researchers with matching h-index are ranked by the number of citations. The ranking list includes 12 researchers. The h-index can be determined from Web of Science, Scopus, Google Scholar, the Hungarian Scientific Works Repository and the programs Tud-O-Méter, Publish or Perish. The ranking is edited using the Google Scholar web database.

Communication Solutions in the Gas and Oily Industry

Ildi Bölkény — 2025-05-19

The laboratory tests necessary for oil and gas production were carried out under realistic conditions. Due to ever deeper drilling, this can mean a pressure of up to 1000-2000 bar, and a temperature of 200-300 °C. The creation of these conditions is carried out with target machines, which are usually partially automated measuring devices. In addition to creating extreme environmental properties, other substances are often present during the measurement, such as mercury or hydrogen, justifying that the equipment can be controlled remotely with an IT system. In addition to the remote control and supervision of the measurement, the connected IT system also monitors it. The article deals with the communication solutions of the IT system of target machines used in the gas and oil industry.