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Publications - 6374

On the Challenges of Mutual Interference between Cable Television Networks and Mobile Fixed Communication Networks in the Digital Dividend Bands

Péter Vári Hussein Taha Szilvia Nagy

Publication Name: Infocommunications Journal

Publication Date: 2022-09-01

Volume: 14

Issue: 3

Page Range: 63-71

Description:

Recently, the issue of monitoring and repairing leakage from cable television networks have re-emerged, particularly after the International Telecommunication Union released a part of the ultra-high frequency spectrum to mobile broadband services. The newly allocated spectrum, known as the digital dividend bands, was traditionally used throughout Europe for digital TV broadcasting. The emerging problem is the mutual interference between the new frequency spectrum utilized by the Mobile/Fixed Communication Networks and the band used by cable TV providers to offer their services. This article is a brief overview and a starting point for extensive research in this area. We started with a simple description of the cable television system and mobile/fixed communication networks focusing on the aspects associated with ingress and egress interference issues. We also discussed the approaches for detecting and measuring mutual interference and reviewed the relevant literature. This article is concluded with some proposed measures for reducing or mitigating mutual interference.

Open Access: Yes

DOI: 10.36244/ICJ.2022.3.8

Decision of Construction Technology from a Sustainability Aspect, Life Cycle Analysis Based on Transport and Construction

O. Kegyes-Brassai Boglárka Eisingerné Balassa László Buics

Publication Name: Chemical Engineering Transactions

Publication Date: 2023-01-01

Volume: 103

Issue: Unknown

Page Range: 355-360

Description:

In the case of the different types of construction processes, an important aspect from the sustainability point of view is the organization of construction, the total construction time and cost, and their influence on CO2 emissions. In this study, in the case of construction projects, we examine the impact of the decided technology on the environmental impact. We take into consideration the aspects of transport and construction organization. Using life cycle analysis methods, we present the comparison of alternatives and sustainable solutions. Discrete event simulation is used to determine the CO2 emission rate under different maintenance approaches. In the simulation model, a 2 x 2 lane I2 type bridge is simulated with altered traffic lines according to the different scenarios of maintenance. In the case of a half-track closure, the capacity of a 2 × 2 lane road is reduced by half, while the capacity of a 2 × 1 lane road due to alternating traffic directions is reduced by more than 50 %. The extent of the reduction depends on the length of the closed section, which greatly affects the emptying time. According to the results of the simulation, the CO2 emission might be lower in the case of narrowed traffic alteration than in the case of half-track closure, but the maintenance timeframe is also an important factor.

Open Access: Yes

DOI: 10.3303/CET23103060

Evaluating AMD EPYC CPU architectures on CFD applications

Flavio Cesar Cunha Galeazzo László Környei Łukasz Szustak Paweł Bratek Marcin Lawenda

Publication Name: Future Generation Computer Systems

Publication Date: 2026-04-01

Volume: 177

Issue: Unknown

Page Range: Unknown

Description:

In this work, the authors focus on assessing the impact of the AMD EPYC processor architecture on the performance of CFD applications. Several generations of architectures were analyzed, such as Rome, Milan, Milan X, Genoa, Genoa X and Bergamo, characterized by a different number of cores (64-128), L3 cache size (256 - 1152 MB) and RAM type (8-channel DDR4 or 12-channel DDR5). The research was conducted based on the OpenFOAM application using two memory-bound models: motorBike and Urban Air Pollution. In order to compare the performance of applications on different architectures, the FVOPS (Finite VOlumes solved Per Second) metric was introduced, which allows a direct comparison of the performance on the different architectures. It was noticed that local maximum performance occurs at different values of grid element per CPU when utilizing different processor types. Additionally, the behaviour of the models was analyzed in detail using the AMD µProf and LIKWID software profiling analysis tools to reveal the applications’ interaction with the hardware. It enabled fine-tuned monitoring of the CPU’s behaviours and identified potential inefficiencies in AMD EPYC CPUs. Particular attention was paid to the effective use of L2 and L3 cache memory in the context of their capacity and the bandwidth of memory channels, which are a key factor in memory-bound applications. Processor features were analyzed from a cross-platform perspective, which allowed for the determination of metrics of particular importance in terms of their impact on the performance achieved by CFD applications.

Open Access: Yes

DOI: 10.1016/j.future.2025.108237

A comparative study of the relationship between circular economy, economic growth, and oil price across South Asian countries

Laszlo Vasa Simona Andreea Apostu Ploypailin Kijkasiwat Anwar Hussain

Publication Name: Frontiers in Environmental Science

Publication Date: 2022-10-10

Volume: 10

Issue: Unknown

Page Range: Unknown

Description:

This study investigates the relationship between economic growth, oil price, and circular economy through biomass energy consumption in South Asian countries, examining the possibility of biomass consumption by enhancing economic growth and decreasing oil price. Energy is the backbone of economic growth, while biomass energy resources being the best renewable energy resource alternative considering the production cost. There are no studies in the literature with regard to the influence of biomass consumption on economic growth and oil price; our study has been designed to fill this gap. For this, we used data for the period 2010–2020 and ARDL and Granger causality. The findings show that all elasticities are statistically significant in the short term for Pakistan, India, Bangladesh, and Sri Lanka. In the long term, coefficients of oil price for Pakistan and Sri Lanka are positively associated with significant elasticities, whereas biomass energy consumption is negatively associated with oil price in India and Bangladesh. Biomass energy consumption significantly impacts the economic growth of Pakistan and Bangladesh in the long term, whereas in the case of India and Bangladesh, an association between biomass energy consumption and GDP is shown. As a policy implication, governments can create and adjust policies in order to reduce costs in the energy system and protect the environment from pollution with the adoption of a biomass energy system because fossil oil and coal energy systems are unfavorable to economic growth, especially across South Asian countries.

Open Access: Yes

DOI: 10.3389/fenvs.2022.1036889

Data, models, algorithms, AI and the role of PSE – the generation next

E. N. Pistikopoulos Rafiqul Gani

Publication Name: Computers and Chemical Engineering

Publication Date: 2026-04-01

Volume: 207

Issue: Unknown

Page Range: Unknown

Description:

Process Systems Engineering (PSE) is the scientific discipline of integrating scales and components describing the behavior of various systems via mathematical modeling, data analytics, synthesis, design, optimization, monitoring, control, and many more. The emergence of Artificial Intelligence (AI) has provided an opportunity to re-assess the role of data, models and algorithms in the context of the evolving role of PSE. This article provides a critical guide in understanding and unlocking the potential opportunities and synergies that AI can offer empowering the next generation of PSE developments towards truly Augmented Intelligence driven methods and tools.

Open Access: Yes

DOI: 10.1016/j.compchemeng.2026.109564

Reliability‑based probabilistic numerical plastically limited analysis of reinforced concrete haunched beams

Majid Movahedi Rad Sarah Khaleel Ibrahim

Publication Name: Scientific Reports

Publication Date: 2023-12-01

Volume: 13

Issue: 1

Page Range: Unknown

Description:

This research proposes a novel method that considers the optimal reliability-based design of reinforced concrete haunched beams subjected to probabilistic concrete properties and complementary strain energy values. The theory is applied twice, once to evaluate a deterministic solution, where the plastic behaviour is constrained by the complementary strain energy of residual stresses induced within steel bars. Secondly, the same method is considered for a probabilistic solution where the concrete characteristics—compressive strength and modulus of elasticity—and complementary strain energy value vary randomly. The reliability index acts as a bound for the solution. It is important to mention that the model utilised in this publication is derived from recent research after being calibrated using Abaqus. This work represents an extension of that recent research that exclusively considered deterministic work. This research led deterministically to new estimates for the complementary strain energy, which will be interpreted as reflecting the behaviour of plastic thresholds and quantifying the associated loads. Afterwards, uncertainty is studied when probability interferes, showing various load values and damage in concrete and steel when the complementary strain energy and concrete properties are probabilistically evaluated, giving a less reliable solution as the load reduces. These effects are reflected in the varying plastic behaviour of the investigated haunched beams.

Open Access: Yes

DOI: 10.1038/s41598-023-29930-0

Measurement and analysis of delivery van vibration levels to simulate package testing for parcel delivery in Hungary

Péter Böröcz S. Paul Singh

Publication Name: Packaging Technology and Science

Publication Date: 2018-05-01

Volume: 31

Issue: 5

Page Range: 342-352

Description:

In the past several decades, there continues to be an increase in both domestic and international online and catalogue shipments that requires an increase in shipments and handling of parcels by single parcel delivery companies. This study measured the vibration levels that occur in parcel delivery shipments from pickup to delivery, especially the sections involving delivery vans and small vehicles over ground road transportation in Hungary. Goods that were shipped in the regions studied almost always travel at least once by van on varying road conditions such as motorways, main, side or city roads to deliver parcels to the final destination. The aim of this paper was to provide an understanding of vibration levels that occur during van transportation that can be used to pre-shipment test new packages to prevent damage. The measured acceleration-time data were analyzed in terms of power spectral densities (PSDs) and presented with statistical data to provide an understanding of the variability of intensity. The separated and averaged vibration levels that were measured in this study were compared with the American Society of Testing and Materials and the International Safe Transit Association vibration profiles for pickup and delivery vehicle in the form of PSD spectrums. Based on the analyzed data of this study, PSD spectra were provided for various route conditions as well as composite spectra, which can be used to simulate the measured vibration conditions representing van shipments.

Open Access: Yes

DOI: 10.1002/pts.2327

Identifying necessary and sufficient conditions for enhancing loyalty in hybrid electronic vehicles: A combined PLS-SEM and NCA approach

Muhammad Shakil Ahmad Yong Ki Lee Jae Jang Yang Sung Yong Choi

Publication Name: Travel Behaviour and Society

Publication Date: 2026-04-01

Volume: 43

Issue: Unknown

Page Range: Unknown

Description:

The purpose of this study is to examine value elements related to hybrid electric vehicles and their impact on consumers’ brand-related (brand identification) and corporate-related (corporate image) responses, which are expected to influence buying intention. Data was collected from 294 owners of hybrid electric vehicles in South Korea and analyzed using PLS-SEM and NCA (necessary condition analysis). The study finds that all four elements of value have a significant impact on either brand identification or corporate image. The study shows that brand identification and corporate image predict buying intention. Brand identification is found to play a mediating role in the relationship between aesthetic value and corporate image and between eco-friendliness and corporate image. The study finds that corporate image mediates the relationship between brand identification and buying intention. The study contributes to the understanding of the psychological process that explains buying intention of the hybrid electric vehicle (HEV) users.

Open Access: Yes

DOI: 10.1016/j.tbs.2025.101192

From individual memory to organizational memory (intelligence of organizations)

Andrea Bencsik I. Marosi V. Lore

Publication Name: World Academy of Science Engineering and Technology

Publication Date: 2009-08-01

Volume: 56

Issue: Unknown

Page Range: 1-6

Description:

Intensive changes of environment and strong market competition have raised management of information and knowledge to the strategic level of companies. In a knowledge based economy only those organizations are capable of living which have up-to-date, special knowledge and they are able to exploit and develop it. Companies have to know what knowledge they have by taking a survey of organizational knowledge and they have to fix actual and additional knowledge in organizational memory. The question is how to identify, acquire, fix and use knowledge effectively. The paper will show that over and above the tools of information technology supporting acquisition, storage and use of information and organizational learning as well as knowledge coming into being as a result of it, fixing and storage of knowledge in the memory of a company play an important role in the intelligence of organizations and competitiveness of a company.

Open Access: Yes

DOI: DOI not available