Acta Polytechnica Hungarica: Recent submissions
Now showing items 21-40 of 175
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Convergence of the Nelder-Mead method for con- vex functions
(2024)We extend several result of Lagarias, Reeds, Wright and Wright [17] for various types of convex functions. The main main convergence theorem of [17] is also generalized to convex functions. We give counterexamples to ... -
Big Data Deduplication in Data Lake
(2024)Data lakes are the next generation of technology to process and store big data. As usual, new challenges and problems arise inevitably with new technologies. One of these problems is the occurrence of duplicate data in ... -
Model-Free Nonsingular Fast Terminal Sliding Mode Control of a Permanent Magnet Synchronous Motor
(2024)This paper proposes a new algorithm for Model-Free Control (MFC) combined with an improved Nonsingular Fast Terminal Sliding Mode Control (NFTSMC) technique for current control of a Permanent Magnet Synchronous Motor ... -
One Aspect of Environmental Engineering – Modelling the Air Pollution Effects using Advection-Diffusion
(2024)This paper aims to contribute to the development of appropriate and sustainable solutions that enhance response readiness and facilitate the identification, processing, investigation and reporting of fire and explosion ... -
Time Evolution Model for Analysing Malicious Samples
(2024)In this paper, the results of the practical examination of the Time Evolution Model ([1] [2] [3]) used to categorize malicious samples are summarized. This method provides effective assistance in anti-malware testing ... -
Risk Monitoring and Assessment System for Accidents, Occupational Diseases and Work- Related Injuries for Enterprises with Chemically Hazardous Sites
(2024)There are, currently, numerous different methods and software products available for conducting industrial safety studies. The weakness of most of them is that they do not completely address all the sets of components ... -
Restoration of Images Compressed by Hybrid Compression, based on Discrete Cosine Transform and Vector Quantization, over a Binary Symmetric Channel
(2024)The H.264 digital video compression standard (encoded files are MP4 files, but they can also be AVI or MKV) had a lot of attention and was successful for a long time due to the many features and techniques used to compress ... -
Assessing the Impact of Integrating Photovoltaic Systems and Wind Turbines, on Power System Stability and Performance Parameters
(2024)This study aims to identify the behavior of parameters in different operating regimes, respectively short circuits in a part of the power system that include renewable sources, respectively wind and photovoltaic (PV) ... -
NPV-DQN: Improving Value-based Reinforcement Learning, by Variable Discount Factor, with Control Applications
(2024)Discount factor plays an important role in reinforcement learning algorithms. It decides how much future rewards are valued for the present time-step. In this paper, a system with a Q value estimation, based on two ... -
Towards an Explainable Multi-Target Regression, for Wear and Friction Prediction for Brake Pad Materials
(2024)The primary objective of this study is to create an effective multi-target regression model able to predict friction coefficient and wear rate, which are critical parameters for the tribological performance of brake ... -
Success Factors of Youth Entrepreneurship Projects based on Fuzzy Analytic Hierarchy Method on the Example of Kazakhstan
(2024)The article discusses the different factors that contribute to the success of youth entrepreneurship projects. The research conducted was a systematic review of various research articles that involved the use of keywords ... -
Analysis of State Estimation Accuracy in Distribution Networks Using Pseudo- Measurement Selection and Real Measurement Incorporation
(2024)In this paper, we investigate computationally efficient methodologies for generating pseudo-measurements with the aim of selecting the set of pseudo-measurements that can achieve maximum state estimation accuracy for a ... -
Models for Perceived Importance and Satisfaction of Outsourcing Factors: Evidence from Slovakia
(2024)Outsourcing of logistics activities brings companies a number of benefits, in the form of increasing the quality of logistics processes, reducing costs or reducing risk throughout the supply chain. Although a number of ... -
Numerical and Experimental Study of a Thermal Separation Process, for Electrical Cable Waste Components
(2024)The continuous update of electrical products and the rapid development in the power industry are leading to an increase in cable waste. Due to the high purity of copper in cables and the low energy consumption when they ... -
An Image Fusion Method of SAR and Optical Images, Based on Image Intensity Fields, by Reducing the Effect of Speckle Noise
(2024)This study proposes an improved fusion method, that takes advantage of the combined strengths of existing fusion methods. First, current methods are compared using a fusion of noisy images from the Synthetic Aperture ... -
Bidirectional Use of the Batteries in Modern Electric Vehicles
(2024)Recently, the climate and carbon neutrality are the largest challenges, both in the European Union and globally. In addition, an energy crisis caused mostly by the Russian- Ukrainian war, has made countries understand ... -
Economic Development and Business Environment in EU Countries under the Social Media Support
(2024)Various internet platforms are rapidly penetrating the existing business environment. They enable the creation of a new social media strategy for entrepreneurial entities with the aim of strengthening their presence and ... -
Does Academic and Market Cooperation Increase the Efficacy of Hungarian Research, Development and Innovation (RDI) Projects?
(2024)As supported by numerous studies and publications, the scientific literature places great emphasis on the collaboration between the market and the academic actors, when evaluating the effectiveness of RDI projects. The ... -
The Impact of Human Activity on Environmental Elements Based on the Results of a Primary Research
(2024)Our global economy and society face many challenges every day. Issues such as reducing inequalities, alleviating poverty or even tackling environmental problems are becoming increasingly pressing. The push for sustainability ... -
Characteristics of Consumer Segments based on Consumer Habits and Preferences from an Environmental and Social Responsibility Perspective
(2024)Consumer habits and preferences are increasingly being transformed by CSR (Corporate Social Responsibility). Consumers are becoming more aware of what they are buying, and this is encouraging companies to pay attention ...