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Found 6374 publications
Sensitivity and validity of the fuzzy signature based evaluation of residential building conditions
Publication Name: Civil Comp Proceedings
Publication Date: 2014-01-01
Volume: 105
Issue: Unknown
Page Range: Unknown
Description:
The characteristics and the status of the existing stock of residential buildings are extremely important for the national economy of all countries including Hungary. Formerly some methods and approaches to formally tackle and evaluate individual buildings based on available records and expert reports were formulated. These methods are suitable for the evaluation and ranking of residential buildings and make it easier to complete the status assessment and decision support for further utilization. A mathematical analysis has been conducted to identify the sensitivity of the calculated final results in the case of the applied fuzzy signatures related to the changes of the membership values at the leaves (the end nodes of a graph). This paper briefly presents the methods, then it investigates the validity of these results taking into consideration the possible subjective discrepancy and certainty in the evaluations.
Open Access: Yes
DOI: DOI not available
The mediating effect of farmer’s knowledge on the relationship between agricultural services, skills acquisition and food security
Publication Name: Environment Development and Sustainability
Publication Date: 2025-01-01
Volume: Unknown
Issue: Unknown
Page Range: Unknown
Description:
Enhancing productivity, income, and food security requires agricultural services and skill development, especially in vulnerable areas like the Gaza Strip where farmers constantly confront obstacles. With an emphasis on the mediating function of farmers' knowledge, this study investigates the connections among household food security, skill development, and agricultural services. 379 farmers in the Gaza Strip were surveyed using a quantitative methodology. In order to examine the direct and indirect effects of agricultural services and skills on food security outcomes, data were gathered using structured questionnaires and analyzed using SPSS software. The findings show that farmers' knowledge and levels of food security are greatly and favorably impacted by agricultural services. It was discovered that having access to financial support, technical help, and agricultural inputs improved farmers' ability to provide food for their families. Additionally, learning agricultural skills helped farmers become more knowledgeable, which enhanced the results of food security. These results demonstrate how knowledge acts as a mediator in converting training and services into noticeable increases in livelihoods. The study comes to the conclusion that two important ways to improve food security in the Gaza Strip are to invest in skill development and to boost agricultural services. To optimize the impact on household resilience and food security, policymakers and development practitioners are urged to create interventions that include technical assistance, input provision, and capacity-building initiatives.
Open Access: Yes
Real-time monitoring of ammonia emissions from cereal crops using LoRaWAN-based sensing technology
Publication Name: Scientific Reports
Publication Date: 2026-12-01
Volume: 16
Issue: 1
Page Range: Unknown
Description:
This study presents a LoRaWAN-based IoT system developed for real-time monitoring of ammonia (NH₃) emissions in cereal crop fields. Sustainable agriculture increasingly demands on-farm greenhouse gas (GHG) tracking linked to environmental variables. IoT offers efficient real-time monitoring of soil NH₃ emissions and associated factors. Our research introduces a unique Field Monitoring Laboratory: a LoRaWAN-connected IoT system integrating soil, crop, and microclimate sensors to observe NH₃⁺, air temperature, rainfall, humidity, soil temperature, and moisture content. The system comprises a field lab, data server, and custom dashboard with analytics capabilities. NH₃ fluxes were measured in autumn-sown cereals across three growing seasons (2020–2023). Tukey’s Kramer test revealed significant (p < 0.05, p < 0.001) differences in NH₃ emissions and environmental variables between years. Highest NH₃ emissions (1.94 ppm in 2020, 1.71 ppm in 2021) coincided with elevated air (25–31 °C) and soil (21–23 °C) temperatures, and higher mean and peak rainfall (0.40–0.48 mm average; max 9–31.6 mm). Principal Component Analysis showed 65.8% variance explained by PC1 and PC2, with high loadings from temperature and soil moisture. Spearman’s correlation indicated moderate positive associations (r = 0.38–0.4, p < 0.05) of NH₃ with soil moisture at 20 cm and 40 cm of soil depth, and a weak negative correlation (r = -0.16 and − 0.17) with soil temperature at 20 cm and 40 cm. The study underscores the potential of IoT technology using calibrated gas sensors and LoRaWAN for real-time NH₃ and environmental monitoring, enabling informed decision-making in smart agriculture.
Open Access: Yes
Investigation and machine learning-based prediction of parametric effects of single point incremental forming on pillow effect and wall profile of AlMn1Mg1 aluminum alloy sheets
Publication Name: Journal of Intelligent Manufacturing
Publication Date: 2023-01-01
Volume: 34
Issue: 1
Page Range: 331-367
Description:
Today the topic of incremental sheet forming (ISF) is one of the most active areas of sheet metal forming research. ISF can be an essential alternative to conventional sheet forming for prototypes or non-mass products. Single point incremental forming (SPIF) is one of the most innovative and widely used fields in ISF with the potential to form sheet products. The formed components by SPIF lack geometric accuracy, which is one of the obstacles that prevents SPIF from being adopted as a sheet forming process in the industry. Pillow effect and wall displacement are influential contributors to manufacturing defects. Thus, optimal process parameters should be selected to produce a SPIF component with sufficient quality and without defects. In this context, this study presents an insight into the effects of the different materials and shapes of forming tools, tool head diameters, tool corner radiuses, and tool surface roughness (Ra and Rz). The studied factors include the pillow effect and wall diameter of SPIF components of AlMn1Mg1 aluminum alloy blank sheets. In order to produce a well-established study of process parameters, in the scope of this paper different modeling tools were used to predict the outcomes of the process. For that purpose, actual data collected from 108 experimentally formed parts under different process conditions of SPIF were used. Neuron by Neuron (NBN), Gradient Boosting Regression (GBR), CatBoost, and two different structures of Multilayer Perceptron were used and analyzed for studying the effect of parameters on the factors under scrutiny. Different validation metrics were adopted to determine the quality of each model and to predict the impact of the pillow effect and wall diameter. For the calculation of the pillow effect and wall diameter, two equations were developed based on the research parameters. As opposed to the experimental approach, analytical equations help researchers to estimate results values relatively speedily and in a feasible way. Different partitioning weight methods have been used to determine the relative importance (RI) and individual feature importance of SPIF parameters for the expected pillow effect and wall diameter. A close relationship has been identified to exist between the actual and predicted results. For the first time in the field of incremental forming study, through the construction of Catboost models, SHapley Additive exPlanations (SHAP) was used to ascertain the impact of individual parameters on pillow effect and wall diameter predictions. CatBoost was able to predict the wall diameter with R2 values between the range of 0.9714 and 0.8947 in the case of the training and testing dataset, and between the range of 0.6062 and 0.6406 when predicting pillow effect. It was discovered that, depending on different validation metrics, the Levenberg–Marquardt training algorithm performed the most effectively in predicting the wall diameter and pillow effect with R2 values in the range of 0.9645 and 0.9082 for wall diameter and in the range of 0.7506 and 0.7129 in the case of the pillow effect. NBN has no results worthy of mentioning, and GBR yields good prediction only of the wall diameter.
Open Access: Yes
Effect of some myostatin (MSTN) variants on live weight and beef traits measured by ultrasound in Charolais candidate breeding bulls
Publication Name: Journal of Applied Animal Research
Publication Date: 2025-01-01
Volume: 53
Issue: 1
Page Range: Unknown
Description:
This study investigated the relationship between some ultrasound measurements, live weight data, and five (F94L, nt267, nt324, nt414 and Q204X) myostatin (MSTN) variants associated with beef production in Charolais cattle. A total of 390 Charolais candidate breeding bulls were weighed at birth (BIW) as well as 205 (CWW) and 400 days (FDW) of age, and ultrasonically measured for ribeye area (REA), fat thickness at rump (FRU), fat thickness at ribeye (FRI) and marbling of the ribeye (MAR) at 400 days of age. The frequency of allele C and A were high in the studied population. The F94L had a significant effect on the FRU and FRI, whereas REA significant differed between homozygous and heterozygous animals on SNP at nt267. MAR of non-mutant animals were significantly (by 04.−05 points) lower than those heterozygous for the F94L. FRI tended to be higher (0.51–0.57 cm) for mutations together nt267 and nt414, or for F94L, nt414 and nt324, but lower (0.47–0.49 cm) for nt267 and nt414 mutations. The results indicating F94L could be use in QTL selection for improving beef quality. The polygenetic effect of different MSTN mutations, as well as the effect of MSTN deficiency, would be worth investigating in the future.
Open Access: Yes
Business Culture and Behavioral Characteristics
Publication Name: Acta Polytechnica Hungarica
Publication Date: 2022-01-01
Volume: 19
Issue: 7
Page Range: 69-86
Description:
The main goal of our research, and thus, of our present study, was to explore some problems and issues of business behavior and etiquette in Slovakia and Hungary. The international comparative research program launched by Fam and Richards was our starting point, in which we examined these two countries. We found that due to the cultural differences in the dimensions of the Hofstede model, differences can be detected in business ethics and etiquette in the business life of Hungary and Slovakia, which can be supported by statistical methods. At the same time, our results also showed that almost a half-century since Hofstede research has not passed without a trace in the Central European Region. The transition from socialism to a market economy involved border openings. At the same time, it facilitated the convergence of the business culture of Slovakia and Hungary, changing the relative position of these two countries on the Hofstede scale. We drew attention to the fact that it would be worth repeating Hofstede's research to record socio-economic changes, in the case of intensely transforming societies and countries.
Open Access: Yes
Gamification in for-profit organisations: A mapping study
Publication Name: Business Theory and Practice
Publication Date: 2020-06-25
Volume: 21
Issue: 2
Page Range: 598-612
Description:
This study reviews prevailing trends in “for-profit” business-related gamification. It examines the current literature, focusing on gamification elements, industries and variables that is of interest to researchers in different business environments. A systematic mapping approach was applied to this study. Articles were selected from different databases in a two-step screening process, subject to sets of inclusion and exclusion criteria. A total of 25 articles were further for: (1) represented industries, (2) orientation of the gamified system, (3) types of implementation, (4) gamification elements analysed, (5) impact on companies, and (6) company variables analysed. Results confirmed that the number of empirical studies on gamification in for-profit organisations is growing. Researchers have placed greater emphasis on analysing customer-related gamification environments than on employee-oriented gamification. This finding is consistent with the prevailing trend of increasing demand from practitioners to gamify customer-related processes. This is likely due to the potential for higher positive impact on the performance of companies. Most frequently deployed gamification elements are badges, rewards, and leader boards. The literature suggests that over all, gamification has a positive effect on various company variables, such as motivation, engagement of employees, brand loyalty, and customer experience. This paper highlights the particular areas of business-related gamification that have already been examined and possible future directions.
Open Access: Yes
Fractal properties of gold, palladium and gold-palladium thin films on InP
Publication Name: Vacuum
Publication Date: 2009-08-25
Volume: 84
Issue: 1
Page Range: 247-250
Description:
Thermal interaction of indium phosphide (InP) bulk compound semiconductor with thin gold metal films was investigated in the course of the present work. The interaction of the InP/Au system resulted in a pattern showing fractal dimensions. The temperature dependence of the fractal parameters was investigated in a broad temperature range from 200 to 600 °C. No significant temperature dependence of the fractal dimension was observed. The same calculations will be presented for Au/InP and AuPd/InP systems. Our calculations show that the Pd-based contacts have a different behaviour than AuGe metallization where a strong temperature dependence of the fractal number was observed earlier. Another topology measure, the structural entropy is also calculated for the samples. The structural entropy is usually applied for determining the type of the localization of charge distributions, but it can also be used for generalized charges, such as the lightness of the pixels of an electron microscopy picture. © 2009 Elsevier Ltd. All rights reserved.
Open Access: Yes
Psychometric Properties of the Italian Tendency to Avoid Physical Activity and Sport Scale Relationship to Weight Stigma and Body Esteem
Publication Name: Stigma and Health
Publication Date: 2024-01-01
Volume: Unknown
Issue: Unknown
Page Range: Unknown
Description:
Physical inactivity is a growing problem that contributes to a range of negative health consequences, such as psychological and physical issues and weight gain. Recent evidence suggests that the tendency to avoid physical activity is associated with weight stigma and low (body-related) self-esteem. New cross-culturally validated psychometric scales for assessing nonparticipation in physical activity could help researchers and practitioners better understand the psychosocial factors contributing to avoidance of physical activity and for the more efficient promotion of an active lifestyle. The objective of the present study was to evaluate the psychometric properties of the Italian Tendency to Avoid Physical Activity and Sport Scale (TAPAS) by conducting a confirmatory factor analysis and calculating the scale’s internal consistency and convergent/ discriminant validity. An Italian sample (N = 235; 57.4% females, Mage = 35.17 years; SD = ±10.83) participated in an online survey. The measures included the TAPAS, Rosenberg Self-Esteem Scale, Depression Anxiety Stress Scale–21, Weight Self-Stigma Questionnaire, Body Esteem Scale, and Exercise Addiction Inventory–Revised. The results of the confirmatory factor analysis supported a first-order one-factor scale, and the TAPAS showed good internal consistency. Additionally, the TAPAS was positively associated with body mass index, weight stigma, anxiety, stress, and depression; it was negatively associated with self-esteem and body self-esteem. The results suggest that the TAPAS is a psychometrically reliable and valid measure for assessing the tendency to avoid physical activity and sport among Italian-speaking individuals. The study also expands the knowledge of psychosocial factors involved in avoiding sports and participation in physical activity.
Open Access: Yes
DOI: 10.1037/sah0000579
