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Found 6327 publications
Old railways, new borders. The impact of treaty of Trianon on Western Transdanubia network (1918–1924)
Publication Name: Journal of Transport History
Publication Date: 2023-12-01
Volume: 44
Issue: 3
Page Range: 457-482
Description:
The Great War and Trianon opened a new chapter in the history, not only of the Kingdom of Hungary, but also of Western Hungary. Besides dividing up the counties of Sopron, Moson and Vas, the newly re-drawn borders also split up most of the railway lines running within them as well. From the territory sliced from the three counties, the previously non-existent province of Austria, Burgenland, was established in 1922. In many cases, the new demarcation lines followed boundaries of old districts or settlements, but it was rare to find natural boundaries among them. As a result, between the two World Wars, the use of the affected railway tracks began to change similar to several contemporary Central European cases, with the exception of GYSEV (Győr–Sopron–Ebenfurth Railway Company), which could remain in its original form. This research paper aims to examine how the shift of borders in this region affected railway transport. It is based on the local historical literature on the railway, regional history and primary resources.
Open Access: Yes
Phylogenetic analyses of Ixodes rugicollis with notes on its morphology in comparison with Ixodes cornutus
Publication Name: Parasites and Vectors
Publication Date: 2023-12-01
Volume: 16
Issue: 1
Page Range: Unknown
Description:
Background: The subgenus Pholeoixodes contains Ixodes species typically associated with birds that nest in cavities or with carnivorous mammals that are burrow-dwelling. Among ticks infesting the latter, Ixodes rugicollis is regarded as the rarest species in the western Palearctic. Despite the unique morphology of this species, its identification (especially of subadult stages) is difficult, and molecular-phylogenetic data to offer other diagnostic methods and a better understanding of its taxonomy are not available. Methods: In this study, a female and a male of I. rugicollis were collected in Romania. The female was compared morphologically to another female of this species collected in France and to the lectotype of Ixodes cornutus (from Tajikistan), which has similar morphology and host association. Following DNA extraction, two mitochondrial (cytochrome c oxidase subunit I: cox1 and the 16S rRNA gene) and two nuclear genetic markers (18S and 28S rRNA genes) of I. rugicollis were amplified and analyzed in a phylogenetic context. Results: Females of I. rugicollis and I. cornutus differed in the shape of their palps, scutum and areae porosae and the size of peritremes, but they were similar in palpal setal length, dental formula and arrangement of anal setae. Measurements of two I. rugicollis females examined were not less different from each other than from I. cornutus. Phylogenetically, I. rugicollis clustered with other members of its subgenus. The topology of all trees showed the position of bat-associated tick species of the subgenus Eschatocephalus among Pholeoixodes species. Conclusions: For the first time to our knowledge, this study provides high-resolution digital pictures of male and female I. rugicollis as well as corresponding molecular data. Morphological comparison of this species with I. cornutus could not resolve uncertainties in the validity of the latter species, which can only be accomplished after collecting new specimens of I. cornutus and consequent molecular comparisons. This study includes the first comprehensive molecular-phylogenetic analysis of western Palearctic Pholeoixodes species based on both nuclear and mitochondrial genetic markers and including I. rugicollis. The results of these confirm the phylogenetic position of subgenus Eschatocephalus within Pholeoixodes, justifying the need to merge them to comply with the taxonomic criterion of monophyly. Graphical Abstract: [Figure not available: see fulltext.]
Open Access: Yes
Investigation of the Tensile Strength of Adhesive-Bonded Steels Using Surface Treatments
Publication Name: Materials
Publication Date: 2023-12-01
Volume: 16
Issue: 24
Page Range: Unknown
Description:
This study explores the tensile strength of adhesive joints in steel, focusing on the influence of heat treatment and diverse surface modifications. Results indicate a notable relationship between annealing temperature and tensile strength, with the most favorable outcomes identified at 90 min and 165 °C. Particularly, surfaces treated through turning, sandblasting, and plasma treatment (type C) consistently outperformed other methods. A standout revelation emerged from the turned, sandblasted, and plasma-treated surface (C), showcasing an exceptional tensile strength of 69.06 MPa. Load-holding tests underscored its resilience under diverse load conditions. Surface analyses, including roughness measurements, wetting characteristics, and Scanning Electron Microscope imaging, provided valuable insights into structural transformations induced by different treatments. Chemical composition examinations unveiled significant alterations post-plasma treatment, impacting surface chemistry and contributing to an outstanding tensile strength of 67.63 MPa. In essence, this research offers a glimpse into the nuanced factors influencing adhesive joint strength in steel. The turned, sandblasted, and plasma-treated surface emerges as a promising avenue, sparking further curiosity into the underlying mechanisms propelling superior tensile strength in adhesive joints.
Open Access: Yes
DOI: 10.3390/ma16247663
The role of the environment in entrepreneurial propensity of youngsters’ business ideas
Publication Name: Journal of Innovation and Entrepreneurship
Publication Date: 2023-12-01
Volume: 12
Issue: 1
Page Range: Unknown
Description:
Entrepreneurship shows regional differences through countries’ history, economic environments, society and habits of individuals. Youngsters can think globally and have the highest skills to access information and know-how. This paper collects data from students’ project work from different countries and extract that information, which can give interesting input to describe regional effects on entrepreneurial propensity through a quantified semantic analysis. Youngsters from 12 countries received the same instructions to present their national economies and then create a business there. The fundamental question of the paper is that are there any definable attributes from the economic environment, which effect youngsters’ entrepreneurial propensity? How can we describe these effects? We linked values and made a numerical evaluation of youngsters’ business concepts, which gives not only a range but also the grade of the presence of local or regional elements. The results show that the more exact special elements of a national economy mentioned, the more barriers participants are aware of. The research concept and the results may give useful inputs in knowledge transfer and education of entrepreneurship.
Open Access: Yes
Deep Learning-Based Approach for Autonomous Vehicle Localization: Application and Experimental Analysis
Publication Name: Machines
Publication Date: 2023-12-01
Volume: 11
Issue: 12
Page Range: Unknown
Description:
In a vehicle, wheel speed sensors and inertial measurement units (IMUs) are present onboard, and their raw data can be used for localization estimation. Both wheel sensors and IMUs encounter challenges such as bias and measurement noise, which accumulate as errors over time. Even a slight inaccuracy or minor error can render the localization system unreliable and unusable in a matter of seconds. Traditional algorithms, such as the extended Kalman filter (EKF), have been applied for a long time in non-linear systems. These systems have white noise in both the system and in the estimation model. These approaches require deep knowledge of the non-linear noise characteristics of the sensors. On the other hand, as a subset of artificial intelligence (AI), neural network-based (NN) algorithms do not necessarily have these strict requirements. The current paper proposes an AI-based long short-term memory (LSTM) localization approach and evaluates its performance against the ground truth.
Open Access: Yes
Systems engineering in automotive product development: A guide to initiate organisational transformation
Publication Name: Journal of Open Innovation Technology Market and Complexity
Publication Date: 2023-12-01
Volume: 9
Issue: 4
Page Range: Unknown
Description:
Systems Engineering (SE) is an engineering method that has rarely been applied in Automotive Product Development, despite its noticeable positive effects in other engineering fields. With increasing interests, firms and scholars have started to discover its impact in the segment, however internal hurdles appear when it comes to implementation practices at organisations across the industry. This paper presents a comprehensive guideline, results and good practices on the SE implementation, developed in Formula SAE (FSAE), which is a relevant model environment of automotive industry. The impact of applying SE show project results improvement in cost, time and quality aspects, although, the maturity of SE should be assessed at the system of systems level. Outcomes gained from FSAE have been validated by in-depth interviews with SE experts, engineers and managers affiliated at technical development departments of 4 different automotive OEMs. These practitioners provide evaluated practices as employee involvement, applying learning by doing, and playing with architectures relevant and feasible in industrial setting, however emphasized expected impeding factors as sluggishness and general resistance to organisational changes.
Open Access: Yes
Systematic Review of Cashierless Stores (Just Walk Out Stores) Revolutionizing The Retail
Publication Name: Management and Marketing
Publication Date: 2023-12-01
Volume: 18
Issue: s1
Page Range: 427-448
Description:
The paper aims to examine the evolving retail sector in recent years, specifically how digitalisation and technological innovations have transformed it. All actors have had to adapt to remain competitive. Notably, a new innovation in the retail sector, namely the checkout-free or cashierless store, emerged in 2018. Systematic literature is relied upon to achieve the study's objectives. The significance of this study lies in the use of multiple IT tools such as AI, cameras, sensors, and self-organising shelves to replace human intervention in the retail sector. Globally, several startup companies have developed this new unmanned solution, and Amazon Go stands out as one of the most well-known among them. The primary objective of this pioneering concept is to enhance efficiency by saving time and reducing queues. The aim is to enable customers to enter and exit the store with minimal human contact as quickly as possible. This paper presents the recent trend of the cashierless concept, its evolution, and proliferation. A systematic literature review and data analysis from the Crunchbase Database were conducted. The findings demonstrate that this recent concept is altering both consumers' purchasing behaviours and companies' business models. This paper provides novel perspectives and insights into the wider literature on cashierless concepts and smart retail in the context of digital business.
Open Access: Yes
Comparison of Coupled Electrochemical and Thermal Modelling Strategies of 18650 Li-Ion Batteries in Finite Element Analysis—A Review
Publication Name: Materials
Publication Date: 2023-12-01
Volume: 16
Issue: 24
Page Range: Unknown
Description:
The specificities of temperature-dependent electrochemical modelling strategies of 18650 Li-ion batteries were investigated in pseudo-2D, 2D and 3D domains using finite element analysis. Emphasis was placed on exploring the challenges associated with the geometric representation of the batteries in each domain, as well as analysing the performance of coupled thermal-electrochemical models. The results of the simulations were compared with real reference measurements, where temperature data were collected using temperature sensors and a thermal camera. It was highlighted that the spiral geometry provides the most realistic results in terms of the temperature distribution, as its layered structure allows for a detailed realisation of the radial heat transfer within the cell. On the other hand, the 3D-lumped thermal model is able to recover the temperature distribution in the axial direction of the cell and to reveal the influence of the cell cap and the cell wall on the thermal behaviour of the cell. The effect of cooling is an important factor that can be introduced in the models as a boundary condition by heat convection or heat flux. It has been shown that both regulated and unregulated (i.e., natural) cooling conditions can be achieved using an appropriate choice of the rate and type of cooling applied.
Open Access: Yes
DOI: 10.3390/ma16247613
ALTERNATIVE USES FOR CRUSHED STONE PRODUCTS GENERATED TO MEET THE RAW MATERIAL NEEDS OF ASPHALT PRODUCTION IN HUNGARY
Publication Name: Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu
Publication Date: 2023-11-30
Volume: Unknown
Issue: 5
Page Range: 66-71
Description:
In Hungary, quarries that produce stone products for wearing courses of asphalt pavements also produce a significant amount of 0/4, 0/8 and 4/8 mm fractions. Because of Hungary’s pavement design and asphalt production practices, these fractions do not have a suitable market and can thus be sold on alternative markets. Purpose. To demonstrate the feasibility of using crushed fractions of 0/4 and 0/8 mm in the protection and base layers of asphalt pavements instead of sandy gravel with 0/22 mm fraction. Methodology. The CBR method was applied to evaluate the comparability of characteristics such as particle size distribution and loadbearing capacity. The combination of the Proctor and CBR tests allowed someone to compare the expected technological characteristics of the dominant and alternative aggregate types, such as their sensitivity to water and loadbearing capacity. Findings. The results demonstrated that the performance characteristics of conventionally used sandy gravel with a size of 0/22 mm can be achieved and exceeded by crushed material with much smaller maximum grain sizes – i.e., 0/4 and 0/8 mm. Originality. The paper presents an original study that contradicts the industry’s actual decline of crushed stone (0/4 and 0/8 mm fractions) for asphalt pavement protection layers. The potential effectiveness and functionality of the proposed coating are demonstrated through convincing tests, and thus new data and insights are introduced into the Hungarian construction industry’s practice. Practical value. The test results greatly helped in achieving the high demands of the private industrial project by proposing an alternative variant of crushed stone of 0/8 mm fraction rather than the originally planned dominant sand and gravel material. The asphalt paving experience on this site clearly demonstrated the viability of the alternative aggregate option for Hungarian roads.
Open Access: Yes
