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Found 6334 publications

From Small Houses to Small Houses: Cabins

Andor Wesselényi-Garay

Publication Name: Metszet

Publication Date: 2024-01-01

Volume: 15

Issue: 2

Page Range: 12-19

Description:

The design of new single occupancy cabins starts with the idea of "a box or house, possibly a box-like house" where the process of generating geometric balance initiates the external form, within this limiting geometry organization of functions needs to be approached in such a manner that the need to design individual items of furniture follows on naturally. Questions of local identity are informed by the choice of materials and general orientation, bearing in mind that architects do not generate a regional character, as this is an act of community over time.

Open Access: Yes

DOI: 10.33268/Met.2024.2.1

Testing the selection heuristic of the Accelerated Branch and Bound method

Balázs Bánhelyi Emília Heinc

Publication Name: Annales Mathematicae Et Informaticae

Publication Date: 2024-01-01

Volume: 60

Issue: Unknown

Page Range: 64-74

Description:

This article examined the issue of selection heuristics for the ABB algorithm, a branch-and-bound method for determining the optimal solution structure in P-graphs. Previous studies have not investigated the possible effects of different heuristics on the running time of the ABB algorithm. In this study, we represent the results of applying three basic heuristics in randomly generated P-graphs. In particular, for P-graphs with matrix patterns, the LIFO heuristic is recommended because it performed the best, while the FIFO heuristic had the slowest running time.

Open Access: Yes

DOI: 10.33039/ami.2024.02.006

Numerical Study of the Effect of the Shape and Area of Shallow Foundations on the Bearing Capacity of Sandy Soils

Rashad Alsirawan Ammar N. Alnmr

Publication Name: Acta Polytechnica Hungarica

Publication Date: 2024-01-01

Volume: 21

Issue: 1

Page Range: 103-120

Description:

The settlement and bearing capacity of shallow foundation models with different shapes and areas on cohesionless subsoil under the applied vertical load are presented in this study. Different shapes of foundations with rectangular, square, strip, plus horizontal cross-sectional shapes are numerically studied after the validation on the laboratory model has been conducted and the constitutive soil model that simulates the behaviour of sandy soil has been chosen. The result of the validation showed that the HS model is the most suitable for the simulation of stress-deformation behaviour of sand. The effect of the shape and area are clearly visible and greatly affects the bearing capacity of the soil. The study generally compared Vesic's, Hansen's and German’s bearing capacity equations and showed that Vesic's and Hansen's bearing capacity equations are best suited to the bearing capacity computed from numerical analysis by Plaxis3D. Finally, as a development of Hansen's bearing capacity equation, a new equation of plus shape foundation bearing capacity has been determined.

Open Access: Yes

DOI: 10.12700/APH.21.1.2024.1.7

NEW OCCURRENCES OF TWO RARE UROPODINA (ACARI: MESOSTIGMATA) SPECIES FROM IRANIAN FRUIT PLANTATIONS

Sergey G. Ermilov Hadi Ostovan Jenő Kontschán Mehdi Gheibi Shahram Hesami Somayeh Memarzadeh

Publication Name: Acarina

Publication Date: 2024-01-01

Volume: 32

Issue: 2

Page Range: 175-178

Description:

Two rare Uropodina species are reported from Iran: Macrodinychus iranicus Babaeian and Khalili-Moghadam, 2021 from soil in an apricot plantation; Oplitis iranicus Kazemi and Kontschán, 2007 from soils in orange plantations.

Open Access: Yes

DOI: 10.21684/0132-8077-2024-32-2-175-178

Dynamic Analysis of Geosynthetic-reinforced Pile-supported Embankment for a High-Speed Rail

Edina Koch Rashad Alsirawan

Publication Name: Acta Polytechnica Hungarica

Publication Date: 2024-01-01

Volume: 21

Issue: 1

Page Range: 31-50

Description:

Geosynthetic-Reinforced-Pile-Supported (GRPS) embankments are a trustworthy option ideal to support the railways over soft soils. They are widely used for the time-bound infrastructure projects. The majority of earlier research concentrated on the analysis of the GRPS embankments under static loads while the studies on the behavior of these constructions under dynamic loads are scarce. The fundamental purpose of this study has been to better comprehend the dynamic behavior of GRPS embankments in terms of stresses and settlements distribution via 3D modeling employing the finite element method (FEM). The advanced constitutive model of Hardening soil with small-strain stiffness was utilized to simulate the behavior of the soils under dynamic loads and the train load was modeled according to the recommendations of LM71 Eurocode. The results indicate to the contribution of the piles and geosynthetic reinforcement in the decrease of the settlements. The behavior of settlements and stresses under static and dynamic loads is similar. The load efficiency of the piles decreases during the passage of the train remarkably. The train speed affects obviously on the behavior of the GRPS embankment.

Open Access: Yes

DOI: 10.12700/APH.21.1.2024.1.3

Comparative Seismic Evaluation Across Leading Software: Distinguishing Conventional and Adaptive Pushover Analysis Techniques

O. Kegyes-Brassai Kevin Karanja Kuria

Publication Name: World Conference on Earthquake Engineering Proceedings

Publication Date: 2024-01-01

Volume: 2024

Issue: Unknown

Page Range: Unknown

Description:

The research intends to validate pushover methods through the lens of the incremental dynamic analysis technique. This study will contrast conventional with enhanced pushover strategies, specifically as they are applied to a 2D steel frame, a 3D RC frame, and a reinforced concrete moment-resisting frame structure. For an exhaustive evaluation, state-of-the-art analysis software tools like SAP2000, OpenSees, Etabs, Seismostruct, and AxisVM are to be employed . The aim of the study is to offer insights into how these methodologies fare in predicting the behavior of these structural configurations under varied seismic conditions. Although traditional pushover approaches, such as the Capacity Spectrum Method, Displacement Coefficient Method, and Target Displacement (N2) Method, are appreciated for their simplicity, they also come with inherent limitations. Notably, they tend to overlook the influences of higher modes both horizontally and vertically. To bridge these gaps, the research will explore Adaptive Pushover Analysis (APA), an advanced pushover technique. Given the importance of understanding the seismic behavior of structures, our investigation will focus on how these advanced pushover techniques can be aptly applied to the structural types. We propose an innovative design approach that integrates these advanced pushover analyses with the principles of performance-based seismic design (PBSD). Furthermore, we suggest the inclusion of structural control systems within the realm of pushover analysis. Such systems, engineered to combat external disruptions like seismic events, can significantly mitigate the seismic demands on structures. By modulating the structural response to these external forces, they ensure enhanced safety. Merging these systems with pushover analysis promises a more comprehensive seismic design strategy, making structures more resilient against seismic threats. Once the research concludes, a range of case studies will be deployed to gauge the efficacy of the proposed methodology against traditional pushover tactics. The research's insights will be consolidated and presented in a detailed final report.

Open Access: Yes

DOI: DOI not available

A demographic study of natural heritage visitation intentions in tourism in Győr-Moson-Sopron County, in Hungary

Csaba Kőmíves

Publication Name: Journal of Infrastructure Policy and Development

Publication Date: 2024-01-01

Volume: 8

Issue: 12

Page Range: Unknown

Description:

At the beginning of the 21st century, sustainability is today’s most important issue, but it is achieved only in those areas where there is environmental awareness. Natural heritage is a part of heritage tourism in terms of the grouping of attraction types. The conceptualization of heritage and cultural heritage itself is not uniform in the national and domestic literature, with some considering heritage tourism to be synonymous with cultural tourism and others interpreting it as a connotation. This study aims to present the natural heritage of Győr-Moson-Sopron County (Hungary). Quantitative research was used to analyze the topic (N = 666), the sample is not representative and the selection of respondents was random. Data were collected between 1 September 2023 and 31 October 2023 using electronic questionnaires shared on Google Drive. Data were processed using SPSS 25.0 and MS Office Excel in addition to the descriptive statistical data (modus, median, standard deviation), correlation, and cross-tabulation analyses. In the framework of quantitative research, respondents’ travel willingness to visit tourist attractions, their specific expenditures, and their intention to participate in various events were conducted. The following questions are addressed in the study, whether all three national parks (Fertő-Hanság, Pannontáj-Sokoróand Szigetköz) are equally popular among tourists, whether the educational level of tourists influences the visitation of Lake Fertő, whether the respondents’ place of residence and the Danube floodplain influence the visitation of the lake and whether the age of the respondents influences the visitation of the 700-year-old oak in Hédervár. The significant finding of the study is that the mean of non-young people’s visitation is higher than that of young people in all three national parks.

Open Access: Yes

DOI: 10.24294/jipd.v8i12.9084

Machine Learning and Artificial Intelligence Method for FinTech Credit Scoring and Risk Management: A Systematic Literature Review

Laszlo Vasa Jewel Kumar Roy

Publication Name: International Journal of Business Analytics

Publication Date: 2024-01-01

Volume: 11

Issue: 1

Page Range: Unknown

Description:

The ever-changing landscape of financial technology has undergone significant changes owing to advancements in machine learning, artificial intelligence, blockchains, and digitalization. These changes have had a profound impact on the provision of financial services, specifically, credit scoring and lending. This study examines the intersection of financial technology, artificial intelligence, machine learning, blockchain, and digitalization in the context of credit services with a focus on credit scoring and lending. This study addressed three main research questions: The research followed a comprehensive methodology, considering factors such as population, intervention, comparison, outcomes, and setting to ensure that collected data aligns with research objectives. The research questions were structured using the PICOS framework, and the PRISMA model was used for the systematic review and study selection. The publications analysed covered a wide range of datasets and methodologies.

Open Access: Yes

DOI: 10.4018/IJBAN.347504

Study of the Negative Work Area in the p-V Diagram of an HCCI Engine †

Cs Tóth-Nagy

Publication Name: Engineering Proceedings

Publication Date: 2024-01-01

Volume: 79

Issue: 1

Page Range: Unknown

Description:

Homogeneously charged compression ignition is a promising combustion process that is proven to increase combustion efficiency and decrease exhaust emissions when compared to Otto or Diesel engine efficiencies and emissions. The HCCI process can be considered an advancement on the path to sustainability. However, improper control of the start of combustion causes the efficiency of the engine to drop significantly. The reason for this efficiency drop is that an early start of combustion causes the piston on the upward stroke to experience increased cylinder pressure after the combustion process is complete. The piston must further compress the cylinder content until it reaches the top dead center. During this process, the piston still experiences an increased gas force on the way towards TDC, having to invest extra disadvantageous work into the compression stroke, causing a negative work area in the pressure–volume diagram of the engine. The present study introduces the negative work area in the p-V diagram of an HCCI engine. It describes the phenomenon and explores the reasons behind it. It also investigates some of the factors affecting the negative work area in the p-V diagram.

Open Access: Yes

DOI: 10.3390/engproc2024079022