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Publications - 6374

Soft computing based car body deformation and EES determination for car crash analysis systems

András Rövid Pál Michelberger Peter Varlaki Annamária R. Várkonyi-Kóczy Maria Da Graça Ruano

Publication Name: Conference Record IEEE Instrumentation and Measurement Technology Conference

Publication Date: 2004-10-08

Volume: 3

Issue: Unknown

Page Range: 1674-1679

Description:

Car body deformation modeling plays a very important role in crash accident analyses, as well as in safe car body design. The determination of the energy absorbed by the deformation and the corresponding Energy Equivalent Speed can be of key importance, however their precise determination is a very difficult task. Although, using the results of crash tests, intelligent and soft methods offer a way to model the crash process itself, as well as to determine the absorbed energy, the before-crash speed of the car, etc. In this paper a modeling technique and an intelligent expert system are introduced which together are able to follow the deformation process of car bodies in car crashes and to analyze the strength of the different parts, thus significantly can contribute to the improvement of the safety of car bodies.

Open Access: Yes

DOI: DOI not available

Identification and interpretation of acausal synchronistic cognitive networks Part II. Observations via Laurens van der Post

Peter Varlaki Péter Baranyi

Publication Name: 4th IEEE International Conference on Cognitive Infocommunications Coginfocom 2013 Proceedings

Publication Date: 2013-01-01

Volume: Unknown

Issue: Unknown

Page Range: 839-850

Description:

The paper deals with the modeling and identification of the hypothetical acausal synchronistic cognitive networks concerned as 'artifacts' ('works of art') of collective 'creative' unconscious processes. This part of the paper discusses the 'joint observations' of Carl Jung and Wolfgang Pauli via interpretations of Laurens van der Post. © 2013 IEEE.

Open Access: Yes

DOI: 10.1109/CogInfoCom.2013.6719214

Evaluation of High-Temperature Performance of Hungarian Bituminous Binders Using the BTSV Method

Szabolcs Rosta László Gáspár

Publication Name: Materials

Publication Date: 2026-05-01

Volume: 19

Issue: 10

Page Range: Unknown

Description:

In Europe, bitumen classification has traditionally relied on empirical tests, namely penetration and the Ring and Ball softening point, originally developed for unmodified binders and considered insufficient for modern modified binders. As an alternative, a rheology-based method, the Bitumen Typisierungs Schnell Verfahren (BTSV) rapid bitumen categorization method, has been developed in Germany to characterize high service temperature performance, with performance requirements introduced in 2025 in the German specifications. In this study, the performance of five bitumen types commonly used in Hungarian road construction was investigated using the BTSV method. During testing, the softening temperature corresponding to a rheological threshold value of G* = 15.0 kPa (TBTSV) and the phase angle (δBTSV) were determined. TBTSV is defined as the temperature corresponding to G* = 15 kPa, representing the softening state, while δBTSV reflects the viscoelastic balance between elastic and viscous behaviour. The objective of this study is to evaluate the high-temperature performance of commonly used Hungarian bituminous binders using the BTSV method and to compare the results with traditional empirical parameters and German classification systems. A total of 137 binder samples from production control were tested and analysed, including paving-grade, SBS-modified, and chemically stabilized rubber-modified binders. Statistical evaluation included mean values and 95% confidence intervals. For rubber-modified bitumens, the recoverable, insoluble rubber content was determined using the Soxhlet extraction method. Based on the results, it can be concluded that with increasing rubber content, the TBTSV value shows an increasing trend, while the δBTSV value decreases. As discussed in the paper, a strong linear relationship was observed between the investigated parameters in the TBTSV–δBTSV diagram, with a coefficient of determination of R2 = 0.99.

Open Access: Yes

DOI: 10.3390/ma19102012

Faunistic and taxonomic additions to the oribatid mites (Acari, Oribatida) of Cuba

Sergey G. Ermilov Jenő Kontschán Vasiliy B. Kolesnikov Denis V. Sharapov Pavel B. Klimov

Publication Name: Acarologia

Publication Date: 2023-01-01

Volume: 63

Issue: 3

Page Range: 770-782

Description:

The present study is based on oribatid mite materials collected from leaf litter in two forest locations in Cuba. A list of 64 species, belonging to 47 genera and 31 families, is presented. Of these, one genus and two species are recorded for the first time from the Neotropical region; 17 species, one subgenus, six genera, and two families are recorded for the first time from Cuba. Two new species of the superfamily Oripodoidea—Lagenobates fossatus Ermilov and Kontschán n. sp. (Haplozetidae) and Muliercula curvilineata Ermilov and Kontschán n. sp. (Scheloribatidae)—are described.

Open Access: Yes

DOI: 10.24349/hi71-nsch

Optimal protocols for quantum quenches of finite duration in the Luttinger model

Masudul Haque Ádám Bácsi Balázs Dóra Balázs Dóra

Publication Name: Physical Review B

Publication Date: 2019-06-06

Volume: 99

Issue: 24

Page Range: Unknown

Description:

Reaching a target quantum state from an initial state within a finite temporal window is a challenging problem due to nonadiabaticity. We study the optimal protocol for switching on interactions to reach the ground state of a weakly interacting Luttinger liquid within a finite time τ, starting from the noninteracting ground state. The protocol is optimized by minimizing the excess energy at the end of the quench, or by maximizing the overlap with the interacting ground state. We find that the optimal protocol is symmetric with respect to τ/2, and can be expressed as a functional of the occupation numbers of the bosonic modes in the final state. For short quench durations, the optimal protocol exhibits fast oscillation and excites high-energy modes. In the limit of large τ, minimizing energy requires a smooth protocol while maximizing overlap requires a linear quench protocol. In this limit, the minimal energy and maximal overlap are both universal functions of the system size and the duration of the protocol.

Open Access: Yes

DOI: 10.1103/PhysRevB.99.245110

On stateform of Hungary between 1920 and 1944: Applicability of the term „monarchy without a king”

Péter Takács

Publication Name: Journal on European History of Law

Publication Date: 2019-01-01

Volume: 10

Issue: 2

Page Range: 139-148

Description:

The official stateform of Hungary between 1920 and 1944 was „monarchy”. Since she did not have a king for a long time, however, it is often interpreted, even in academic analyses, in a way that it was, in fact, a kingdom with an unspecified monarch, viz without a king that could have been determined. At the level of stateforms, this ambivalent situation of a „kingless kingdom” is expressed by the category „monarchy without a king”. Some legal scholars consider this category to be one of the particular variants of monarchy, while others argue that it might be conceived at a certain point on the scale between the two main types of stateforms, namely between monarchy and republic. This paper analyzes the origin of the term „monarchy without a king”, its meaning in public law and its interpretation within the framework of Hungarian legal history. In the latter respect, it raises the questions whether the term can be used to define and characterize the Hungarian stateform in the Horthy era, and if so, what specific meaning it conveys.

Open Access: Yes

DOI: DOI not available

Implant for augmentation of Cerebral blood flow trial-1 (IMPact-1). A single-arm feasibility study evaluating the safety and potential benefit of the Ischemic Stroke System for treatment of acute ischemic stroke

Vinod Puri Hans Christoph Diener Laszlo Csiba Ilona Adam Bernd Griewing Attila Csanyi Nasli R. Ichaporia Attila Valikovics Andreas Hetzel Natan Bornstein Stefan Schwab Dietmar Schneider Subhash Kaul Dheeraj Khurana

Publication Name: Plos One

Publication Date: 2019-07-01

Volume: 14

Issue: 7

Page Range: Unknown

Description:

Background The Ischemic Stroke System is a novel device designed to deliver stimulation to the sphenopalatine ganglion(SPG).The SPG sends parasympathetic innervations to the anterior cerebral circulation. In rat stroke models, SPG stimulation results in increased cerebral blood flow, reduced infarct volume, protects the blood brain barrier, and improved neurological outcome. We present here the results of a prospective, multinational, single-arm, feasibility study designed to assess the safety, tolerability, and potential benefit of SPG stimulation inpatients with acute ischemic stroke(AIS). Methods Patients with anterior AIS, baseline NIHSS 7–20 and ability to initiate treatment within 24h from stroke onset, were implanted and treated with the SPG stimulation. Patients were followed up for 90 days. Effect was assessed by comparing the patient outcome to a matched population from the NINDS rt-PA trial placebo patients. Results Ninety-eight patients were enrolled (mean age 57years, mean baseline NIHSS 12 and mean treatment time from stroke onset 19h). The observed mortality rate(12.2%), serious adverse events (SAE)incidence(23.5%) and nature of SAE were within the expected range for the population. The modified intention to treat cohort consisted of 84 patients who were compared to matched patients from the NINDS placebo arm. Patients treated with SPG stimulation had an average mRS lower by 0.76 than the historical controls(CMH test p = 0.001). Conclusion The implantation procedure and the SPG stimulation, initiated within 24hr from stroke onset, are feasible, safe, and tolerable. The results call for a follow-up randomized trial (funded by BrainsGate; clinicaltrials.gov number, NCT03733236).

Open Access: Yes

DOI: 10.1371/journal.pone.0217472

Manufacturing and Assembly Variability in Electric Drivetrains: Impacts on NVH Performance—A Review

Krisztián Horváth

Publication Name: World Electric Vehicle Journal

Publication Date: 2026-05-01

Volume: 17

Issue: 5

Page Range: Unknown

Description:

Considerable progress has been made in predicting nominal NVH behavior in electric drivetrains, but the acoustic scatter observed across manufactured units remains insufficiently understood. In practice, nominally identical drive units may still exhibit noticeably different tonal behavior because small deviations in gears, shafts, bearings, fits, centering features, or assembly phase modify the excitation, transfer, and radiation mechanisms of the system. This review examines how manufacturing and assembly variability influences NVH performance in electric drive units and e-axles, with particular focus on the rotor–shaft–gear–bearing–housing system. Unlike broader EV NVH reviews, the present work focuses specifically on variability-induced acoustic scatter and its propagation along the drivetrain NVH generation and transmission path. To support transparency and consistency, the literature search and selection process followed a structured, PRISMA-inspired approach across Scopus, Web of Science, Google Scholar, and SAE Mobilus for the 2015–2026 period. From 387 identified records, 50 studies were retained after duplicate removal, screening, and full-text assessment. The selected literature was synthesized into eight thematic categories: imbalance; run-out and eccentricity; bearing clearance and preload; spline and pilot centering; thermal effects; phase indexing; transmission error and sidebands; and end-of-line NVH diagnostics. The reviewed literature shows that manufacturing- and assembly-induced deviations can significantly alter transmission error, sideband structure, shaft-order content, and final tonal response, even when individual components remain within nominal tolerance limits. Beyond synthesizing the evidence base, the review organizes existing modeling and diagnostic practices into a structured framework for variability-aware NVH assessment, based on explicit deviation parameterization, hierarchical model fidelity, intermediate excitation metrics, thermal-state awareness, and closer integration with production and measurement data. Overall, the findings support a shift from nominal NVH assessment toward robustness-oriented, production-representative interpretation and future prediction of acoustic scatter in electric drivetrains.

Open Access: Yes

DOI: 10.3390/wevj17050261

The utilization of struvite produced from human urine in agriculture as a natural fertilizer: A review

Anna Mikola Surendra K. Pradhan A. Zseni J. Nagy

Publication Name: Periodica Polytechnica Chemical Engineering

Publication Date: 2019-05-15

Volume: 63

Issue: 3

Page Range: 478-484

Description:

Most of the nutrients in municipal wastewater originate from urine. Nevertheless, chemical fertilizers are commonly used in the agriculture instead of urine. There are some problems related to the direct utilization of urine, such as micropollutants present in urine, odour and storage of large volume of urine. In wastewater, phosphorus may contribute significantly to the pollution of the aquatic systems. Therefore, wastewater treatment techniques are mainly focusing on removing phosphorus. Phosphorus is collected in the sludge either by a chemical or by a biological process. With the growing concern of micropollutants present, which are in the sludge, the use of sludge in agriculture has been gradually decreasing. It means that the phosphorus content in sludge is not recycled efficiently whereas the use of limited mineral phosphorus resources is growing. To overcome these issues, urine could be collected separately and struvite could be produced. This may recover about 90% of phosphate in urine. In this paper, the use of human urine and struvite as a fertilizer in the agriculture and the production of struvite is discussed. Results showed that the struvite could be an effective natural fertilizer.

Open Access: Yes

DOI: 10.3311/PPch.12689