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Found 6407 publications

Corrigendum to “Global trade of medicinal and aromatic plants. A review” [J. Agricult. Food Res. 21 (2025) 101910] (Journal of Agriculture and Food Research (2025) 21, (S2666154325002819), (10.1016/j.jafr.2025.101910))

Mohammad Taghi Ebadi Sahar Zamani Mehran Fathi Ákos Máthé

Publication Name: Journal of Agriculture and Food Research

Publication Date: 2025-08-01

Volume: 22

Issue: Unknown

Page Range: Unknown

Description:

The authors regret We recently reviewed the published version of our article “Global trade of medicinal and aromatic plants: A review” and noticed an error in the units reported in Figs. 1, 3 and 4. Specifically, in the columns related to export and import values, the unit was incorrectly labelled as “million” instead of “thousand". The authors would like to apologise for any inconvenience caused.

Open Access: Yes

DOI: 10.1016/j.jafr.2025.102040

Cavitation measurement in a centrifugal pump

I. Lakatos Nikolett Fecser

Publication Name: Acta Polytechnica Hungarica

Publication Date: 2021-01-01

Volume: 18

Issue: 4

Page Range: 63-77

Description:

One of the causes of centrifugal pump instability lies in the phenomenon of cavitation. Cavitation in the centrifugal pump can produce undesirable effects such as deterioration in hydraulic performance. In order to prevent the emergence of cavitation, it is required to know the onset point of the cavitation, in the pump. Our study presents the process and result of the cavitation measurement performed on a centrifugal pump in a closed loop test system. In this study, we applied CFD analysis, which serves as a means of measuring flow in the impeller of the centrifugal pump. The results gained from CFD analysis correspond, approximately, to the measured results.

Open Access: Yes

DOI: 10.12700/APH.18.4.2021.4.4

Influence of Twitter activity on the stock price of soccer clubs

József Stéger Attila Sóti Alessandro Ancarani Gábor Vattay

Publication Name: Social Network Analysis and Mining

Publication Date: 2020-12-01

Volume: 10

Issue: 1

Page Range: Unknown

Description:

The interrelation between the fluctuations of stock prices of football clubs and the social media activity of their fans is of major economic interest. The results in this research provide measurable support for the suggestion that financial market activities and the number of tweets are linked in the case of big football clubs. The novelty of the research is to show which daily ratio of tweet counts and their mood can predict the stock market. Based on these findings, sport managers could use social media strategically to build better relationships with consumers and stakeholders.

Open Access: Yes

DOI: 10.1007/s13278-020-00691-2

Consumer Perception of the Zero-Waste Concept: a Hungarian Case Study

Judit Petra Koltai Tamás Vinkóczi Éva Heimné Rácz

Publication Name: Chemical Engineering Transactions

Publication Date: 2023-01-01

Volume: 107

Issue: Unknown

Page Range: 355-360

Description:

Sustainability is a concept that many people are familiar with, but it also seems elusive and difficult to generalize. Part of this concept is the Zero Waste mindset, which exists in equally diverse forms in people's minds. The research uses the 7R approach of the Zero Waste framework, adapted to consumers, to analyze which consumer groups can be distinguished from each other in terms of Zero Waste thinking. The methodology is based on a questionnaire analysis with the use of an HSD test. The results show that rethinking is the most widespread within the 7R concept, as the effects of most moderating variables (generation, gender, information gathering, product purchase, knowledge of the 7R concept, perceived income) can be measured in its case. In addition, 3 groups (Perfectionists, Adopters, and Rejecters) were created based on the consumers’ mindset of Zero Waste and named according to the means of the variables associated with the 7Rs. The present research is a Hungarian case study, which illustrates the existence of Zero Waste awareness and activities and should be extended to other nations as well.

Open Access: Yes

DOI: 10.3303/CET23107060

Contribution to knowledge of Uropodina mites (Acari: Mesostigmata) of Virginia, USA

Sergey G. Ermilov Jenő Kontschán

Publication Name: Acarologia

Publication Date: 2025-01-01

Volume: 65

Issue: 4

Page Range: 998-1010

Description:

During the investigation of the Uropodina mites of Virginia state (USA) two previously known species (Trachytes balazyi Wiśniewski & Hirschmann, 1994 and Jedediella hoffmani Kontschán, 2017) are discovered in some new localities. Besides the known Uropodina mites, two new species are discovered and described from this state. Trachytes jokaii n. sp. differs from the congener in the shape of the wide and ribbed anterior margin, the shape of the female genital shield and the sculpture of the ventral shield of females. A new key to the North American Trachytes species is also presented. The second species Klebensbergia virginiana n. gen., n. sp. is a unique Uropodina mite in the temperate climate. Only the tropical Penicillaturopoda Hirschmann, 1979 is similar to the new genus.

Open Access: Yes

DOI: 10.24349/tb3j-gb36

Liability of gatekeepers in the DMA regulation

Dominika Borsa Péter Bálint Király

Publication Name: Rechtskultur

Publication Date: 2024-01-01

Volume: Unknown

Issue: Unknown

Page Range: 49-63

Description:

In recent years, the explosive growth of the digital economy and the dominance of technology giants have brought serious challenges. Core platform services operated by global tech companies such as Google, Apple, Facebook and Amazon have many features that open up opportunities for abuse. In response to these processes, the European Union adopted the Digital Markets Regulation (DMA), which aims to promote fair competition and manage market dominance in the digital sphere. At the heart of its provisions are obligations for gatekeepers, i.e. organizations with significant influence on digital markets. Accordingly, the study presents the DMA‘s responsibility issues for gatekeepers.

Open Access: Yes

DOI: DOI not available

In defense of moral liberalism

John Ryder

Publication Name: Pragmatism Today

Publication Date: 2020-12-01

Volume: 11

Issue: 2

Page Range: 13-24

Description:

Though it is much maligned, liberalism remains a vital component of any viable political and social condition. This claim can be defended, though, only once the confusions concerning the meanings of liberalism are resolved. This can be done by considering the primary contemporary challenges to liberalism, of which there are five: populist nationalism, authoritarianism, elitism, traditionalism, and moral absolutism. Each of these, though in differing ways and some more than others, are sources of illiberalism. To appreciate the meaning and import of what is here called moral liberalism, it is valuable to clarify the nature of the challenges to it and the reasons we have to prefer moral liberalism over any of its illiberal alternatives. In the end, moral liberalism may serve as a viable grounding for contemporary societies and states only in so far as it rests, not on commonly held ideas or consensus, but on the recognition of the many interests that members of groups and societies hold in common.

Open Access: Yes

DOI: DOI not available

Hypergraph Formalism for Fuzzy Signature-Based Robot Environment Representation

Csaba Hajdu Ahmet Mehmet Karadeniz Danuta Rutkowska Laszlo T. Koczy

Publication Name: Journal of Artificial Intelligence and Soft Computing Research

Publication Date: 2026-01-01

Volume: 16

Issue: 1

Page Range: 91-100

Description:

This paper introduces a pioneering approach to robot environment representation by integrating a novel hypergraph-based method for modeling fuzzy signatures with a quadtree-like structure for obstacle detection. By structuring fuzzy signatures through hypergraphs, we establish a robust framework that not only streamlines information representation but also simplifies the aggregation-based decision-making process. This synergy is applied to the domain of mobile robotics, where accurate and efficient environment representation is essential. Utilizing a quadtree-like structure for data organization, our technique systematically evaluates feature points against a set of fuzzy operations, determining the significance of obstacles and reconstructing the environmental model through the traversal of the quadtree-like structure. Furthermore, the hypergraph-based formalism sets the stage for a future transition to a tensor-based representation of fuzzy signatures, as envisioned in future work.

Open Access: Yes

DOI: 10.2478/jaiscr-2026-0005

Complex-Geometry 3D Computational Fluid Dynamics with Automatic Load Balancing

József Bakosi László Környei Marc Charest Jacob Waltz Aditya Pandare Akos Kovacs Mátyás Constans Paula Rutherford Ákos Kovács Zoltán Horváth

Publication Name: Fluids

Publication Date: 2023-05-01

Volume: 8

Issue: 5

Page Range: Unknown

Description:

We present an open-source code, Xyst, intended for the simulation of complex-geometry 3D compressible flows. The software implementation facilitates the effective use of the largest distributed-memory machines, combining data-, and task-parallelism on top of the Charm++ runtime system. Charm++’s execution model is asynchronous by default, allowing arbitrary overlap of computation and communication. Built-in automatic load balancing enables redistribution of arbitrarily heterogeneous computational load based on real-time CPU load measurement at negligible cost. The runtime system also features automatic checkpointing, fault tolerance, resilience against hardware failure, and supports power- and energy-aware computation. We verify and validate the numerical method and demonstrate the benefits of automatic load balancing for irregular workloads.

Open Access: Yes

DOI: 10.3390/fluids8050147