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Found 6412 publications
Discrete fourier transform and cepstrum analysis of vibration events on semi-trailer truck
Publication Name: Fme Transactions
Publication Date: 2019-01-01
Volume: 47
Issue: 1
Page Range: 177-182
Description:
The aim of this paper is to present a novel techniqe to analyse the vibration signals during transportation in order to give new information to engineers to better understand these physical events. One of the primary sources of damages during transportation is the permanent vibration transmitted from the platform of semi-trailer to the cargo. The nature of this vibration depends on the road conditions and the features of the vehicle. In this study, a 2-axle-truck with a 3-axle-semi-trailer equipped with air spring suspension was observed to analyse the vibration circumstances. The affecting factors during the transportation were the type of the road (motorway, primary road, secondary road, tertiary road), and different vehicle speed levels. The vibration events were measured and registered on the platform of the trailer, then these values were evaluated in MATLAB environment. The presence of the harmonic vibrational components, the stationarity of the mode shapes, the characteristic frequency narrow-bands of the RMS and PSD values were primarily studied. The applied methods that were used are: discrete Fourier transformation, autocorrelation-, cross-correlation functions and cepstrum analysis.
Open Access: Yes
DOI: 10.5937/fmet1901177P
Systemic Relationships Between Regional Sustainability and Waste Management
Publication Name: Studies in Fuzziness and Soft Computing
Publication Date: 2024-01-01
Volume: 427
Issue: Unknown
Page Range: 15-23
Description:
An assessment of local needs and conditions is essential to support an efficient waste management system, which can be used to select the components and waste management options that best meet these circumstances and their resource requirements. Each of these activities requires careful planning, but the model of sustainable municipal waste management offers a comprehensive interdisciplinary framework. The aim of the research is to develop and present a methodology as an environmental engineering problem that can be applied in practice to evaluate the sustainability of regional municipal waste management systems. As a result of the research, an integrated and interdisciplinary approach will be developed that can be effectively applied at regional level and give an accurate picture of the actual evolution of the role and impact of the waste management planning process and its implementation.
Open Access: Yes
The impact of global socio-economic changes on the regional role of universities
Publication Name: Economic Annals Xxi
Publication Date: 2021-07-10
Volume: 190
Issue: 5-6
Page Range: 33-47
Description:
Economic and regional development and rapid, often unpredictable changes across the globe in technical fields have an effect on everything, including universities, training, research and services as well. Universities must find their place in this continuously changing environment, they need to continuously reinterpret themselves and their own roles, whilst ensuring that education and knowledge transfer take priority. The pace of change is increasingly accelerating with technological novelties and innovations by high-tech industries surpassing themselves at an astounding rate. Therefore, knowledge, as the facilitator and creator of these results, plays an increasingly important role for those who wish to rank among the winners of the competition both locally and globally. Today, the primary creators of knowledge are still educational institutions, and universities are the fundamental platforms of research. However, it is not enough to be «only» a university, they must educate and research and become part of the developed world alongside participants who would like to provide scientific answers to practical problems. In our paper we address the question of breaking points along which the role of universities can be transformed in order to remain open to the needs of both their narrower and wider environment while maintaining theirfundamental mission, thus becoming successful players on the global stage. The development of high-tech industries has resulted in a science-driven period when economic development is unimaginable without the scientific results and the interconnection of individual disciplines. This development will presumably lead to the deterioration of certain individual knowledge and the deepening of others. Higher education must also adapt to this with the development of an education system that strengthens digital skills and serves regional expectations. Nowadays entrepreneurial universities have emerged, which are able to operate with an entrepreneurial approach, thereby responding independently to challenges from outside. The ability to co-operate must be a key aspect of university existence, and the deepening of educational, research and business partnerships is a prerequisite for success. In order to spread management approach and create an entrepreneurial ecosystem, successful R&D work and innovation, it is also necessary to involve external, tender resources and grants, besides own resources. However, these resources need to be used well, but the lack of a pre-planned, conscious strategy results in less efficient use. Regional cooperation, common thinking, training and innovation, science workshops and science parks all contribute to the development of institutions and related regions.
Open Access: Yes
DOI: 10.21003/EA.V190-04
Identifying behavioural addictions in endurance and ultra-endurance runners: a population at risk?
Publication Name: International Journal of Sport and Exercise Psychology
Publication Date: 2026-01-01
Volume: Unknown
Issue: Unknown
Page Range: Unknown
Description:
Behavioural addictions may negatively impact athletic performance and overall health. Little data exist on endurance runners. We conducted a cross-sectional survey study in endurance (≥21.1 km to 42.2 km) and ultra-endurance runners (≥42.2 km), screening for alcohol misuse, substance use (SU), gambling, and exercise addictions (EA) while assessing potential associated risk factors. Statistical analysis included descriptive statistics, the Kruskal–Wallis H-test with post-hoc Dunn´s test, a Multivariable Logistic Regression model, and a CatBoost Classifier, with model interpretability techniques such as Shapley Additive Explanations (SHAP) and Partial Dependence Plots (PDPs). Of 601 runners, 222 were females (37%); their mean age was 42.8±10.1 years; 28.6% screened positive for alcohol, 26.1% for SU, 18.1% for EA, and 8.0% for problematic gambling. SU was more prevalent among female runners (p = 0.02) and half-marathoners (p = 0.007), whereas gambling was more common among men (p = 0.02). Women reported higher EA than men (p < 0.001). Risk factors for alcohol misuse included younger age (25–33 years, p = 0.007), fewer workouts (p = 0.025), and higher income (p < 0.001). SU risk was associated with competition frequency (p = 0.011), injury-related absences (p = 0.002), and EA (p = 0.044). SU included caffeine, cannabis, nicotine, cocaine, ecstasy, and solvents. Gambling risk was associated with younger age (p < 0.001) and EA (p = 0.049). More workouts (p = 0.025) were related to higher EA. Based on these results, we recommend raising awareness, implementing broader screening programmes, and providing educational and support for athletes and staff.
Open Access: Yes
Supply chain integration and supply chain performance: evidence from the textile industry
Publication Name: Industria Textila
Publication Date: 2024-01-01
Volume: 75
Issue: 4
Page Range: 396-404
Description:
This study aims to determine the impact of supply chain integration on supply chain performance and the Internet of Things (IoT) mediating role in Sindh Pakistan's textile industry. Primary data was gathered with the help of questionnaires from previous studies. The employees were requested to complete the questionnaire online, and the concerned HR department was officially contacted. To achieve the research objectives of this study, SmartPLS version 3 is applied. The findings of this study confirmed the direct effect of internal integration, supplier integration, and the Internet of Things on supply chain performance. In addition to this, the present study also confirmed the partial mediation effect of IoT between internal integration, supplier integration, and supply chain performance in the textile industry of Sindh, Pakistan, a developing country. This research uses RBV theory to examine the textile industry's supply chain and effectiveness. Internal integration, partner integration, IoT, and supply chain performance are discussed in the research. This clarifies how these technologies operate together to give organizations a competitive advantage. The study shows how the Internet of Things (IoT) is a go-between for integration and supply chain success. Textile business managers should consider investing money into IoT devices and using their benefits. Companies can get real-time information about their supply chain by using IoT devices and monitors.
Open Access: Yes
Morphological examination of young adults related to obesity
Publication Name: International Journal of Morphology
Publication Date: 2018-03-01
Volume: 36
Issue: 1
Page Range: 121-129
Description:
This study presents a cross-board comparison of the morphological characteristic of students of the Hungarian Language teacher training faculty in Subotica, Serbia based on their nutritional status estimate of their nourishment state. The sample was composed by 146 young adults from all four study years of the faculty, ranging from age 19 to 23. The following anthropometric measurements were carried out: body weight, height, skin fold thickness (skin folds measured at the scapula, triceps, biceps, ilium, hip, thigh and abdomen) and circumferences (waist, hip). The authors calculated and analyzed the data, including: the BMI (body mass index) with the formula, skin fold thickness and with 4-Site Skin fold Equation and waist hip ratio. Descriptive statistic was used to describe the morphological characteristics. Independent T-test and ANOVA analysis was performed to compare the students according to sex and age. The main results of the present study are: (1) no significant difference is found between the age groups in the case of either height or body weight, not for the young men or the young women in the study; (2) the differences between height and weight in the case of the male and female as characteristic for this age group can be observed; (3) the female students are more often found to be overweight or obese than the male students; (4) the majority of participant students can be classified into the normal nutritional status’ category, which holds true for both the young men and women of the study; (5) the fat percentages calculated based on skin fold values show that in terms of weight, the majority of the female students fall under the ‘acceptable’ category, while the majority of the young men are classed as ‘thin’; (6) in the case of abdominal overweight 20.0 % of men and 19.48 % of women belong to the category ‘obese’. This information about the students of the teacher training program is vital, as these young men and women will play an important role as future teachers and thereby, as role models helping to prevent childhood obesity and guiding children throughout their education towards a healthy life style.
Open Access: Yes
The Influence of International Collaboration on the Scientific Impact in V4 Countries
Publication Name: Publications
Publication Date: 2022-12-01
Volume: 10
Issue: 4
Page Range: Unknown
Description:
Several strategies are used by researchers and research facilities to increase their scientific production and consequent research quality. Bibliometric records show that coauthorship and the number of participating organizations in research publications are steadily increasing; however, the effect of collaboration varies across disciplines, and the corresponding author’s country appears to influence research impact. This finding inspired our research question for this study: How does international cooperation affect scientific impact, and does the affiliation of corresponding authors influence citation impact indicators at the level of individual publications? To this end, we provide a comparative evaluation of research articles published in Q1 journals among Visegrad Group countries (Czech Republic, Hungary, Poland and Slovakia) in Medical and Health sciences between 2017 and 2021. The study investigates the relationship between collaboration type (national vs. international) and scientific impact (impact factor of the journal and category normalized citation impact or research papers), as well as the impact of the country of the corresponding author’s affiliation on quantitative quality of individual papers. We show that Q1 research papers in international collaboration have a higher scientific impact than papers published in national partnerships. Moreover, the corresponding authors’ country of affiliation significantly affects scientific impact.
Open Access: Yes
Sight distance analyses for autonomous vehicles in Civil 3D
Publication Name: Pollack Periodica
Publication Date: 2021-12-31
Volume: 16
Issue: 3
Page Range: 33-38
Description:
Nowadays, self-driving cars have a wide reputation among people that is constantly increasing, many manufacturers are developing their own autonomous vehicles. These vehicles are equipped with various sensors that are placed at several points in the car. These sensors provide information to control the vehicle (partially or completely, depending on the automation level). Sight distances on roads are defined according to various traffic situations (stopping, overtaking, crossing, etc.). Safety reasons require these sight distances, which are calculated from human factors (e.g., reaction time), vehicle characteristics (e.g., eye position, brakes), road surface properties, and other factors. Autodesk Civil 3D is a widely used tool in the field of road design, the software however was developed based on the characteristics of the human drivers and conventional vehicles.
Open Access: Yes
Harnessing community participation tourism development in Himalayan region of Uttarakhand State, India
Publication Name: Journal of Infrastructure Policy and Development
Publication Date: 2024-01-01
Volume: 8
Issue: 12
Page Range: Unknown
Description:
The article aims to evaluate the participation of below-poverty-line local community in tourism-related business activity in Himalayan state of Uttarakhand. Further, this article addressed for those who work in the tourism sector. The study employs a mix of methods, including survey data from 500 respondents with a random sampling approach, using Analysis of variance (ANOVA) statistical tools for analysis, other methods were interviews and observations at six tourism sites in Garhwal and four sites in Kumaun. Our findings showed that there has declined in community participation in tourism development, due to the lack of economic benefits obtained in the tourism sector, many believe that the tourism sector does not provide much income growth for them and does not make a significant contribution to the development of their region. Moreover, lack of understanding is considered the basis for community’s inability to play an active role, and lack of stakeholders’ involvement in encouraging them to improve their economy and culture through the tourism sector. Ultimately, this research also underlines the existence of some efforts by tourism travel to encourage public trust, which can help reduce poverty and increase community trust in tourism development in their region.
Open Access: Yes
