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Found 6412 publications
MaxWhere VR-learning improves effectiveness over clasiccal tools of e-learning
Publication Name: Acta Polytechnica Hungarica
Publication Date: 2018-01-01
Volume: 15
Issue: 3
Page Range: 125-147
Description:
The paper investigates how workflows can be communicated and shared through linguistic descriptions, digital content and technological tools. We focus primarily on the content and digital tools of e-learning and VR learning. However, the results of the paper can be applied to collaborative workflows in general. The paper compares the effectiveness of three techniques, ranging from well-known to radically new: classical e-mail/ attachment based sharing, sharing through web interfaces (through a Moodle frontend), and sharing through a VR interface provided by a recently developed VR engine called MaxWhere. To this end, the paper introduces new methods and a new set of concepts for the purposes of benchmarking digital capabilities and user effectiveness within the domain of workflow sharing. The paper applies these concepts and methods to compare the use of the above listed technologies with the participation of 379 test subjects. Tests show that the users were able to complete the required workflow at least 50% faster in the MaxWhere 3D environment than in all other competing cases. The paper also proves that 3D environments are capable of providing users with a much higher level of comprehension when it comes to sharing and interpreting digital workflows.
Open Access: Yes
Enhancing the Nutritional Quality of Low-Grade Poultry Feed Ingredients Through Fermentation: A Review
Publication Name: Agriculture Switzerland
Publication Date: 2025-03-01
Volume: 15
Issue: 5
Page Range: Unknown
Description:
Feed accounts for up to 80% of poultry production costs, with high-quality grains such as soybean meal and corn traditionally serving as primary ingredients. However, increasing costs and competition for these grains have driven interest in low-grade and unconventional feed ingredients, including by-products like rapeseed meal and cottonseed meal. These alternatives are often constrained by high fiber content, anti-nutritional factors, and reduced nutrient bioavailability. Fermentation has emerged as a promising strategy to address these limitations, enhancing digestibility, palatability, and antioxidant properties while degrading harmful compounds such as tannins, trypsin inhibitors, and free gossypol. Solid- and liquid-state fermentation techniques utilize microbial inoculants, including lactobacilli and Bacillus species, to enzymatically break down complex macromolecules, thereby releasing essential nutrients. When combined with pretreatments like enzymatic hydrolysis, fermentation significantly improves the nutritional quality of feed ingredients while reducing costs without compromising poultry health or performance. This review examines the mechanisms, benefits, and challenges of fermentation techniques in poultry feed production, underscoring the importance of further research to optimize fermentation parameters, identify novel microbial strains, and ensure scalability and safety in industrial applications.
Open Access: Yes
Evaluation of fair-faced concrete surfaces using digital image processing
Publication Name: Fib Symposium
Publication Date: 2018-01-01
Volume: Unknown
Issue: Unknown
Page Range: 1003-1010
Description:
In modem architecture concrete is increasingly used as a design feature as well as for its mechanical properties. Therefore, today’s concrete architecture is characterized by various forms, textures and high surface quality. The exact determination of the surface quality requirements is crucial for being able to substantiate any deficiencies of the completed surface if necessary. According to the German, Austrian and Hungarian standards there are four concrete classes distinguished based on several aspects, such as porosity, discoloration, texture, etc. However, the standardized assessment methodologies for fair-faced concrete surfaces are mainly based on manual methods and several aspects can be evaluated only sub-jectively. The goal of the present study is to propose an objective method for the evaluation of the surface void ratio using photogrammetry and digital image processing techniques. The goal of the whole research is to develop an effective assessment method - taking all aspects into account - with which the overall evaluation and classification of the surfaces can be done automatically from one sampling. This method will lead to a quantitative, objective and therefore more reliable evaluation of the surface-quality of fair-faced concrete elements.
Open Access: Yes
DOI: DOI not available
What Drives Progress on SDG 7 and SDG 13? Unpacking the Roles of Clean Technology, Carbon Productivity, and Institutions in EAGLE Economies
Publication Name: Sustainable Development
Publication Date: 2026-01-01
Volume: Unknown
Issue: Unknown
Page Range: Unknown
Description:
The EAGLE economies face persistent structural challenges such as energy inefficiency, weak institutions, and environmental degradation, alongside heightened vulnerability to global shocks and climate change. These barriers slow progress of EAGLE economies toward the achievement of the Sustainable Development Goals (SDGs). This study investigates how energy efficiency (EEI), Production-based CO2 Productivity (CP), environment-related technologies (GDT), and institutional quality (IQI) shape SD in these economies. Using econometric techniques, including the Method of Moments Quantile Regression (MMQR), the study ensures robust estimation. For robustness checks, it applies Bootstrap Quantile Regression, DOLS, FMOLS, and CCR methods. To examine the direction of the relationship, the Dumitrescu–Hurlin panel causality test is employed. The empirical results indicate that EEI, CP, and IQI exert a significant and positive influence on SD performance, thereby supporting progress toward the SDGs. In contrast, GDT exhibits heterogeneous effects across quantiles, showing negative impacts at the lower quantiles but positive and supportive effects at higher quantiles. From a policy perspective, governments should promote cleaner energy transitions, support innovation in green technologies, and strengthen regulatory frameworks to ensure effective environmental governance. Improving institutional capacity and transparency are also essential for successful policy implementation. Additionally, expanding international cooperation, climate finance, and investments in research and education can accelerate the transition toward a low-carbon economy and support progress toward global sustainability goals.
Open Access: Yes
DOI: 10.1002/sd.71034
Molecular-phylogenetic analyses of Ixodes species from South Africa suggest an African origin of bird-associated exophilic ticks (subgenus Trichotoixodes)
Publication Name: Parasites and Vectors
Publication Date: 2023-12-01
Volume: 16
Issue: 1
Page Range: Unknown
Description:
Background: Among hard ticks (Acari: Ixodidae), the genus Ixodes comprises the highest number of species, which in turn are most numerous in the Afrotropical zoogeographic region. In South Africa extensive morphological studies have been performed on Ixodes species but only few reports included molecular analyses. Methods: In this study, 58 Ixodes spp. ticks, collected from ten mammalian and eight avian host species in South Africa, were molecularly and phylogenetically analyzed. In addition, a newly collected sample of the Palearctic Ixodes trianguliceps was included in the analyses. Results: Among the ticks from South Africa, 11 species were identified morphologically. The majority of ticks from mammals represented the Ixodes pilosus group with two species (n = 20), followed by ticks resembling Ixodes rubicundus (n = 18) and Ixodes alluaudi (n = 3). In addition, single specimens of Ixodes rhabdomysae, Ixodes ugandanus, Ixodes nairobiensis and Ixodes simplex were also found. Considering bird-infesting ticks, Ixodes theilerae (n = 7), Ixodes uriae (n = 4) and ticks most similar to Ixodes daveyi (provisionally named I. cf. daveyi, n = 2) were identified. Molecular analyses confirmed two species in the I. pilosus group and a new species (I. cf. rubicundus) closely related to I. rubicundus sensu stricto. Phylogenetic trees based on concatenated mitochondrial or mitochondrial and nuclear gene sequences indicated that the subgenus Afrixodes forms a monophyletic clade with bird-associated exophilic ticks (subgenus Trichotoixodes). Ixodes trianguliceps clustered separately whereas I. alluaudi with their morphologically assigned subgenus, Exopalpiger. Conclusions: Phylogenetic analyses shed new lights on the relationships of Ixodes subgenera when including multiple sequences from subgenus Afrixodes and African as well as Palearctic species of subgenera Trichotoixodes and Exopalpiger. Subgenera Afrixodes and bird-associated Trichotoixodes share common ancestry, suggesting that the latter might have also originated in Africa. Regarding the subgenus Exopalpiger, I. alluaudi is properly assigned as it clusters among different Australian Ixodes, whereas I. trianguliceps should be excluded. Graphical Abstract: [Figure not available: see fulltext.].
Open Access: Yes
Data, models, algorithms, AI and the role of PSE – the generation next
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
Identifying necessary and sufficient conditions for enhancing loyalty in hybrid electronic vehicles: A combined PLS-SEM and NCA approach
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
Introduction to the theoretical analysis of social exclusion of public transport in rural areas
Publication Name: Deturope
Publication Date: 2018-01-01
Volume: 10
Issue: 3
Page Range: 214-227
Description:
Western societies are facing the same problems worldwide regarding the provision of public transport services in rural, sparsely populated and peripheral areas. One of the main reasons is that due to the increasing number of cars (which can satisfy the mobility needs much better), the number of passengers of public transport services are steadily decreasing (ITF, 2015). However, we do not forget that supplying these areas with public transportation have in fact always been problematic: the dispersed settlement network is a given fact as well as the low population density that never generated high demand (Ambrosino, Nelson & Romanazzo, 2003). Passengers of public transport in rural areas are not classified by the majority of international literature as voluntary travellers on public transport vehicles, but who belong to those groups which stand in need of travelling by them. Regarding this issue, the major starting-point is the ability to have access to car which can be modified by other factors (financial situation, sex, age, physical condition, type of household, foreign language skills etc.). Those people who have limited or no access to car are thus constrained by the schedule of public transport vehicles and depend on its reliability or even no access to any transport mode belongs to the group of transport deprived. The purpose of this article is twofold: to introduce those groups who are suffering from the decline of public transport in rural areas and to highlight the necessity of these researches in Central and Eastern Europe.
Open Access: Yes
Measurement and analysis of delivery van vibration levels to simulate package testing for parcel delivery in Hungary
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
