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Found 6414 publications

An expert system for the cost-optimal refurbishment of buildings

Árpád Csík

Publication Name: Advanced Materials Research

Publication Date: 2014-01-01

Volume: 899

Issue: Unknown

Page Range: 599-604

Description:

In the present paper we propose a solid theoretical framework for the automatic parametrization of the cost-optimal refurbishment of arbitrary buildings. The parameters describe the structural parts of the building that can be modified or replaced during the refurbishment process. The methodology also provides the cost-optimal refurbishment cost and the corresponding smallest possible total life-cycle operation cost constrained by the available technological and economical limitations. The theory is implemented into the EnergOpt expert system providing fast and accurate answers to costoptimization problems appearing in common practical applications. The system is built on firm mathematical foundations that is supported by state-of-the-art optimization algorithms capable of finding good optimums in a short amount of CPU time. The modular structure of the IT implementation facilitates effortless localization in different countries. The application of the system may considerably contribute to the decrease of the heating energy consumption and the corresponding environmental load of the building stock. The practical potential of the technology is demonstrated by the energetic analysis of an existing family house. © (2014) Trans Tech Publications, Switzerland.

Open Access: Yes

DOI: 10.4028/www.scientific.net/AMR.899.599

Pavement Sustainability Implications of Different Lateral Wander Modes for Autonomous Trucks

Csaba Koren Richárd Nagy Mohammad Fahad

Publication Name: Chemical Engineering Transactions

Publication Date: 2023-01-01

Volume: 107

Issue: Unknown

Page Range: 631-636

Description:

Autonomous trucks can bring changes in transport infrastructure in terms of sustainability based on the type of lateral wander mode used. In this research, two lateral wander modes, a zero wander and a uniform wander mode, are analysed based on their applicability for sustainability in terms of CO2 emissions. Life cycle analysis has been performed for the analysis period of 30 y for the pavement section of 10 km, along with fatigue predictions. Results show that zero wander mode generates more emissions as a result of premature fatigue damage under channelized loading. The uniform wander mode yields 20 % fewer emissions. Moreover, the use of full-depth reclamation during the pavement's Life Cycle improves the CO2 emissions by 15 % when compared to traditional removal and reconstruction methods. Therefore, the uniform wander mode is favourable for the improvement of pavement sustainability in terms of CO2 emissions.

Open Access: Yes

DOI: 10.3303/CET23107106

Embedded System Simulation Using Renode †

Istvan Szalay Ferenc Péter Speiser Denes Fodor

Publication Name: Engineering Proceedings

Publication Date: 2024-01-01

Volume: 79

Issue: 1

Page Range: Unknown

Description:

In the automotive industry, the reduction of development costs is of key importance. The development of electrical hardware is an expensive, time-consuming process with a lot of development stages (e.g., prototyping, electrical testing, mechanical testing, lifecycle testing). There is a growing need to increase the cost-effectiveness of the development and testing phases of embedded software using virtualization. Using this method, less prototype manufacturing is necessary since the simulations allow for faster and more effective discovery of a large portion of possible faults without building a hardware prototype. Renode is an open source embedded system simulation framework that facilitates software-based testing. The main goal of this paper is to explore the usability of the framework for automotive applications.

Open Access: Yes

DOI: 10.3390/engproc2024079052

Personalized learning opportunity in 3D VR

Ildiko Horvath

Publication Name: 11th IEEE International Conference on Cognitive Infocommunications Coginfocom 2020 Proceedings

Publication Date: 2020-09-23

Volume: Unknown

Issue: Unknown

Page Range: 425-430

Description:

Result of modern digital age, the concept of Personal Learning Environments (PLEs) are becoming more relevant in today's academic world. Personalization is needed to make a product or service or an educational environment more endearing to the target audience, and this is especially true for VR Learning. The paper examines the learning effectiveness connecting to the personalized learning content with the participation of 90 students. The personalized VR education was based on an examination of students' learning type and attribute. In the experiment, the same curricula is compared when executed using audio, visual or reading type of learning content. To determine the learning style of students, the Kolb's learning test were applied. Tests show that the users were able to complete the tests with at least 20% effectiveness, if the learning materials fits their learning type.

Open Access: Yes

DOI: 10.1109/CogInfoCom50765.2020.9237895

Next-generation bacteriophage therapeutic systems: CRISPR-based engineering, near-infrared bioimaging, and precision strategies for treating multidrug-resistant and extensively drug-resistant bacterial infections

U. Saeed Z. Z. Piracha

Publication Name: Frontiers in Microbiology

Publication Date: 2026-01-01

Volume: 17

Issue: Unknown

Page Range: Unknown

Description:

The rapid rise of multidrug-resistant and extensively drug-resistant bacterial infections has renewed interest in bacteriophages as adaptable, targeted antimicrobials. Recent advances in phage engineering, including CRISPR-based approaches, now make it possible to refine host range, strengthen lytic performance, and deliver genetic payloads that target clinically important resistance determinants such as blaNDM, mecA, and mcr-1. In parallel, jumbo phages with large genomes often encode additional functions that support replication and biofilm disruption, offering practical advantages in densely structured infections where antibiotics perform poorly. A second limitation in phage translation has been measurement: in most settings, dosing and treatment duration remain guided by indirect endpoints rather than real-time information on distribution and activity. Near-infrared bioimaging addresses this gap by enabling noninvasive tracking of infection burden and phage kinetics in vivo through bacteriophytochrome-derived reporters, including iRFPs, miRFPs, and PAiRFPs. In this review, we bring these developments together and discuss how CRISPR-enabled phage engineering, jumbo-phage biology, and near-infrared readouts can be integrated into a precision framework that is measurable, adaptable, and clinically interpretable. We examine evidence across major drug-resistant pathogens, including Pseudomonas aeruginosa, Acinetobacter baumannii, Klebsiella pneumoniae, methicillin-resistant Staphylococcus aureus, vancomycin-resistant enterococci, Burkholderia cepacia, and Mycobacterium abscessus. We also summarize practical constraints that remain central to clinical translation, manufacturing quality, host immune neutralization, and regulatory variability, and outline a realistic development pathway in which engineered phages and companion diagnostics progress from animal models to carefully defined clinical indications. Together, these advances support a shift from empirical phage use toward a more standardized, data-driven approach to treating drug-resistant infections.

Open Access: Yes

DOI: 10.3389/fmicb.2026.1748742

Dynamics of Railway Wheelsets with a Nonsmooth Contact Force Model

Mate Antali

Publication Name: Springer Proceedings in Mathematics and Statistics

Publication Date: 2024-01-01

Volume: 454

Issue: Unknown

Page Range: 41-53

Description:

The dynamics of a railway wheelset is investigated, focusing on the effect of the contact force models. For large values of creep velocities, the Coulomb model can be used as an asymptotic approximation of wheel-rail contact forces. Then, we get a nonsmooth dynamical system with codimension-2 discontinuities. At the discontinuity of the phase space, the so-called limit directions can be found, which correspond to the possible transitions between slipping and rolling. By this analysis, the nonsmooth model can complement the usual linear creep force model from the opposite direction, and we can explore more details about the qualitative behaviour of the wheelset.

Open Access: Yes

DOI: 10.1007/978-3-031-56496-3_4

Methodology development on aquatic environmental assessment

László Dióssy József Németh Viktor Sebestyén Péter Huszka Tatjana Juzsakova Cuong Le Phuoc Ákos Rédey Endre Domokos

Publication Name: Environmental Science and Pollution Research

Publication Date: 2017-04-01

Volume: 24

Issue: 12

Page Range: 11126-11140

Description:

The Water Framework Directive aims at reaching the good ecological status of the surface and ground water bodies (László et al. Microchem J 85(1):65–71, 2007). The paper deals with quality evaluation of waters with special focus on the water chemistry parameters as defined in the Water Framework Directive and pertaining legal regulations. The purpose of this paper is to devise a quantitative type of water quality assessment method which could provide rapid, accurate, and reliable information on the quality of the surface waters by using water chemistry parameters. Quality classes have been defined for every water chemistry parameter in light of the legal limit values of the water parameters. In addition to this, weight indices were calculated on the basis of the outcome of the paired comparison of water chemistry parameters and normalized matrix. This was followed by the parametric level analysis of the water chemistry parameters, and finally, the aquatic environment index (AEI) was calculated, which provided general information on the quality of water regarding the water chemistry parameters. The method was illustrated on Lake Balaton, Hungary in which case water samples taken from Balatonfüred City lake area were analyzed and evaluated with the method devised.

Open Access: Yes

DOI: 10.1007/s11356-016-7941-1

Jung- Kerényi - Pauli and the cognitive individuation Part III: A case study for the cognitive individuation

Peter Varlaki Peter Baranyi

Publication Name: 5th IEEE International Conference on Cognitive Infocommunications Coginfocom 2014 Proceedings

Publication Date: 2014-01-23

Volume: Unknown

Issue: Unknown

Page Range: 647-655

Description:

In the third and final part of the paper we intend to show a 'case study' in the C.G. Jung's cognitive individuation process where Jung himself is the 'undetached observer'. His individuation experience can be a part of the cognitive individuation, in the sense that on the basis of the possible integration of the contents deriving hypothetically from the collective unconscious, along with the acausal synchronistic phenomena associated with the coherent meaning patterns can be identified.

Open Access: Yes

DOI: 10.1109/CogInfoCom.2014.7020420

Determination of Johnson–Cook parameters and evaluation of Charpy impact test performance for 1.2709 steel produced via L-PBF

István Hatos Balázs Lőrincz

Publication Name: Fme Transactions

Publication Date: 2026-01-01

Volume: 54

Issue: 2

Page Range: 226-233

Description:

Laser powder bed fusion (L-PBF) enables the creation of advanced metal parts that are difficult to manufacture conventionally. In this study, the model parameters of the Johnson–Cook (JC) constitutive relation and the damage parameters of the JC failure model for 1.2709 steel produced via L-PBF were determined. Constitutive parameters were identified from quasi-static uniaxial tensile tests conducted on smooth specimens. In contrast, stress triaxiality-dependent damage parameters were determined using tensile tests on notched round bar specimens in combination with FEM simulations. The load–displacement curves showed good agreement with the experimentally obtained data. The strain–rate–dependent failure model parameter was determined by correlating Charpy impact test results with numerical simulations. Reasonable agreement between the simulation and experimental results was achieved. The results demonstrate that the proposed experimental–numerical framework provides a reliable basis for modelling both the quasi-static and impact fracture behaviour of L-PBF-fabricated 1.2709 steel.

Open Access: Yes

DOI: 10.5937/fme2602226L