bluuebunny/crossref_metadata_2025_split huggingface dataset:
Biomechanical effect of en-masse versus substep extraction space closure on posterior teeth using clear aligners: a finite element study
Authors: Jiang Yiru , Mei Li , Xu Li , Wang Jue , Feng Xiaoxia , Chen Xiaoyan 
Published: December 2024

Abstract

Objective
To evaluate the biomechanical effects of en-masse versus substep extraction space closure on posterior teeth during clear aligner treatment and to provide guidelines for optimising anti-tipping designs.

Methods
Twenty-four maxillary finite element models incorporating first premolar extractions treated by clear aligners were constructed. The models were divided into two groups: en-masse closure (I0, en-masse retraction; II0, en-masse mesialisation), and substep closure (Ia, canine distalisation; Ib, incisor retraction; IIa, premolar mesialisation; IIb, molar mesialisation). Within each group, different anti-tipping designs (1°, 2°, 3°) were applied to the posterior teeth.

Results
Compared to I0, groups Ia, Ib, and Ia+b exhibited less crown mesial displacement, root distal displacement, and mesial tipping of the posterior teeth. In contrast, groups IIa, IIb, and IIa+b demonstrated more crown mesial displacement, root distal displacement, and mesial tipping. Of note, IIa increased the mesial movement of the premolars and generated a distal force on the molars, mitigating their mesial inclination. IIb had a similar effect. Consequently, Ia, Ib, and Ia+b required significantly less anti-tipping design to maintain the pretreatment mesiodistal angulation of the posterior teeth. Conversely, IIa, IIb, and IIa+b necessitated more anti-tipping design to achieve bodily movement of the posterior teeth.

Conclusion
Substep retraction may reduce the mesial tipping and anti-tipping design of the posterior teeth. Substep mesialisation, however, may increase crown displacement, posterior mesial tipping, and the anti-tipping design; nevertheless, the reaction forces from adjacent teeth can partially alleviate these effects. Further clinical validation is necessary to confirm these findings.
PLS-PM Model for Sustainable Development of Ecotourism: Case Study of Ulytau Nature Park
Authors: Seidualin Darken A. , Mussina Kamshat P. , Mukanov Aidar H. 
Published: December 2024

Abstract
This article is devoted to a comprehensive study of the factors influencing the development of ecotourism in the Ulytau Nature Park, Kazakhstan. The authors use an integrated methodology that combines quantitative (statistical analysis) and qualitative (Analytic Hierarchy Process, survey of the local population) methods of analysis. The purpose of the study is to develop a model that allows predicting the development of ecotourism and justifying strategic decisions for its sustainable development.
As a result of the survey, 8 key factors affecting the development of ecotourism were identified: perceived environmental sustainability, perceived social cost, perceived economic benefits, maximizing community participation, long-term planning, community-centered economy, sense of place, and support for tourism development. Both subjective estimates (Analytic Hierarchy Process) and objective statistical data were used to determine the weights of these factors. Comparative analysis revealed discrepancies between subjective assessments and objective indicators, especially in the perception of the region’s image.
The main result of the study is the development of a qualitative model that uses logistic regression to assess the impact of factors on the development of ecotourism. This model, which considers both subjective and objective data, allows to simulate various scenarios and predict the development of the industry. The results obtained make it possible to identify priority areas for the development of ecotourism in Ulytau and develop recommendations for the creation of a sustainable and socio-economically effective model for the development of ecotourism both for Ulytau and for other regions with similar conditions. The article contributes to the existing body of knowledge on sustainable tourism development by offering a multidimensional data-driven approach that goes beyond theoretical discussions.
Televising the Space Race in Francoist Spain: Sebastià Estradé and the “Friends of Outer Space” (1967-1969)
Authors: Gorostiza Santiago 
Published: December 2024

Abstract
In the context of the space race, space science became an area of collaboration between the Spanish dictatorship and the United States of America during the 1960s. The Francoist regime leveraged its collaboration in the space race as an internal tool for political legitimization. This article examines the role of science popularization in this legitimization process by focusing on the TV show Amigos del Espacio (“Friends of Outer Space”), broadcast between 1967 and 1969 and aimed at young audiences. Specifically, it analyses the available episodes of the show and the trajectory of its scriptwriter, science writer and PhD in Law Sebastià Estradé (1923-2016). The article examines three key dimensions of Amigos del Espacio: the celebration of Spanish science and technology; the portrayal of the relationship between Spain and the United States; and the program’s integration of Catholic faith with the popularization of space science.
Sent from the Heavens, Received in Budapest
Authors: Bakos Áron 
Published: December 2024

Abstract
The paper examines heavenly letters by combining folkloristic, historical, and anthropological perspectives. First, it analyses and compares variations collected by Hungarian folklorists, critically evaluating their findings. Secondly, to reframe these interpretations and explore the character and late modern uses of the letters, the paper traces the origins of this tradition, and looks at the early medieval counterparts of the letters. Based on this brief review of their original form and function, the paper offers an anthropological reading of the communicative role of the letters. My central argument is that through the mere act of copying the metonymic relationship between the letter and the divine power is metaphorically altered, and that the act of copying gradually became an expressive, rather than a technical action. As a result, the changes in their character, the various protective functions incorporated into them or associated with their possession, can be understood as part of a process in which heavenly letters shifted from being indexes to signals.
The Relationship Between Workplace Robots, Employee Exhaustion, and Turnover Intentions in the Age of Industry 5.0: Research From Four Southeastern European Countries
Authors: Nikolić Jelena Lukić , Labus Pero 
Published: December 2024

Abstract
This paper examines and analyzes the relationship between workplace robots, employee emotional exhaustion, and turnover intentions within the context of Industry 5.0. Empirical research was conducted from January to May 2024. During this period, a total of 582 respondents from four Southeastern European countries (Serbia, Croatia, Montenegro, Bosnia and Herzegovina) participated in the research. The proposed relationships between variables were tested by using the partial least squares method for structural equation modeling (PLS-SEM, SmartPLS software). The research results confirmed that the emotional exhaustion of employees had a positive relationship with turnover intentions, while workplace robots’ effects were negatively related to employee emotional exhaustion and turnover intentions. Leaders, managers, and human resource professionals may benefit from the findings presented in this paper, especially during the decision-making process on how to reduce the emotional exhaustion of employees by using workplace robots, which, in the end, will result in employee retention.
The Use of Video Marketing in the Communication Strategy of Business Universities
Authors: Pluta-Olearnik Mirosława , Hasiak Alisa 
Published: December 2024

ABSTRACT
This study explores the role of video marketing in the communication strategies of Polish business universities as they navigate the competitive higher education market. The research examines the practices of five leading Polish business schools, benchmarking them against London Business School (LBS), a prominent European institution. Using qualitative methods, including literature reviews, case studies, and comparative analysis, the study identifies key elements of effective video marketing, such as campus presentations, interviews, event recordings, and promotional content. The findings may be useful for universities aiming to improve their operating strategies. The article also includes practical recommendations for measures to improve the effectiveness of marketing communication efforts within educational institutions.
Interdependency of Safety Factors and Geometric Elements of the Waste Dumps in the Berbeşti Mining Basin
Authors: Apostu Izabela-Maria , Rada Constantin , Faur Florin 
Published: December 2024

Abstract
As a result of mining operations, large amounts of sterile rocks result, which involve the occupation of some land surfaces and which can generate risk situations such as geotechnical phenomena (especially landslides). The risks the population is exposed to in the event of landslides and their increasing incidence in mining areas, make more and more researchers interested in investigating, inventorying and characterizing the conditions and landslides risk areas. The stability conditions for any engineering construction are evaluated right from the design phase. Since the physical and mechanical characteristics of the rocks that define the working slopes and the dumps in the mining perimeters cannot be significantly improved in order to increase stability reserves, the emphasis remains on their appropriate design. The paper aims to develop a fast method to provide indications of the safety factor for different geometric configurations of slopes. Based on the stability analyses, two nomograms were built that graphically represent the dependence between the geometric elements of the slopes and the values of the safety factors, the case study being carried out for the waste dumps in the Berbești Mining Basin, known for its lignite mining activity.
Assessment of the Pollution Level and Determination of the Geo-Accumulation Index of Heavy Metals in the Soil from the Old Funicular Dump Area – Uricani
Authors: Ioniţă Madalina-Flavia , Radu Sorin-Mihai 
Published: December 2024

Abstract
As a result of the mining activities carried out in the Jiu Valley, tailings dumps resulted. Currently, some of these tailing dumps are greened, some are inactive, and some of them are still active within operational exploitation perimeters. In order to capture the negative effects of these deposits, in this work an assessment of the degree of contamination will be carried out and the level of geo-accumulation of heavy metals will be determined in the soil in the area of the Old Funicular dump, an inactive one for about 12 years. The dump was formed following the deposition of tailings resulting from coal mining in the Uricani mine. The main purpose is to identify the types and concentrations of heavy metals present in the soil and determine the level of accumulation of these metals in a certain area. The study involved the collection of soil samples from 17 sampling points, followed by detailed chemical analyses to determine the concentrations of heavy metals present in the soil at the tailings dump. The results indicated variable levels of heavy metal contamination, with concentrations exceeding the normal value of these heavy metals in soil in certain areas. The geo-accumulation index (Igeo) was calculated to assess the degree of accumulation of each heavy metal in soil. The Igeo values obtained varied from slightly polluted to moderately polluted, suggesting a significant influence of mining activities on the soil in this area. The conclusions of the study emphasize the need to implement phytoremediation measures and continuous monitoring to prevent ecological and human health risks.
Evaluation of the Suitability of Non-Productive Land for Biomass Cultivation and its Energy Recovery
Authors: Dunca Emilia-Cornelia , Lazăr Maria , Danciu Ciprian-Gheorghe , Madear Camelia , Varga Lucia-Ana 
Published: December 2024

Abstract
The work is part of the efforts to restore unproductive land in a green and circular economy. The results of the research carried out on non-productive land in the Jiu Valley are presented regarding the suitability of the soil and the cultivated biomass for its energy utilization and obtaining the digestate as fertilizer. The traceability of heavy metals from soil to biomass and the suitability of using biomass for its energy recovery are evaluated.
Selection of Post-Quarrying Land Uses in Western Macedonia, Greece, Using a Hybrid Multi-Criteria Method
Authors: Pagouni Chrisoula , Pavloudakis Francis , Kapageridis Ioannis , Karlopoulos Evangelos 
Published: December 2024

Abstract
The region of Western Macedonia is rich in mineral resources. Over the past decades, it has been primarily focused on lignite mining, while also maintaining smaller-scale extraction activities for olivine, attapulgite, talc, calcium carbonate, dolomite, gypsum, marble, slate, and aggregates, which hold significant economic value. This study recorded active public, private, and municipal quarries as well as inactive public and municipal quarries requiring rehabilitation. Furthermore, a methodology was developed and applied for screening three of the inactive municipal quarries and selecting the more suitable land use for each one. For this purpose, the authors assessed opportunities and risks at the regional level and identified strengths and weaknesses specific to each quarrying site carrying out a SWOT analysis. Criteria for selecting between alternative land uses were then determined. An expert panel including geologists, mineral resource specialists, environmental engineers, regional and municipal officials, legal experts, chamber of commerce representatives, and quarry company board members was convened to evaluate these criteria, with weights assigned using the Analytic Hierarchy Process (AHP). Attributes with spatial variation were mapped using GIS, and the final ranking of land uses for each quarry site was determined using a simple algorithm. The scope of this study was to contribute to the development of communities located close to quarries by supporting the selection of the optimum post-quarrying land uses.
Approaching Human Error in Industrial Settings: Memento for Romanian Occupational Health and Safety Professionals
Authors: Moraru Roland Iosif , Băbuţ Gabriel Bujor , Popescu-Stelea Mihai 
Published: December 2024

Abstract
In recent decades, in addition to numerous work accidents in which tens of thousands of deaths, disabilities and millions of days of temporary inability to work have been recorded, we have unfortunately witnessed some major disasters and accidents due to human errors. Indeed, one of the main identified contributors to the occurrence of these undesirable events stems from latent/active human errors. In this article, we try to develop a selective synthesis of some approaches to human error, different characteristic types, models and methodologies that have been developed to support the minimization of these errors. Relevant aspects of human error are systematized, including applicable systems for effective risk management in order to provide Romanian OSH specialists with tools for deepening/understanding a decisive and - at the same time - insufficiently studied aspect at the national level.
The Importance of Residential Real Estate Characteristics in the Assessment of Selected Groups of Real Estate Market Participants
Authors: Sajnóg Natalia , Jaskólska Monika 
Published: December 2024

Abstract
The price and market value of real estate is influenced by a number of attributes of an economic, legal, physical-technical and environmental nature. Some market characteristics, such as location, neighborhood or area, have a universal dimension, while others result from the specifics of the analyzed real estate segment.
The purpose of the survey was to assess the importance of residential real estate characteristics by real estate market participants. Two groups were surveyed. The first was made up of potential buyers and the second was made up of professionals associated with the real estate market (including appraisers, real estate agents). The results obtained were subjected to comparative and selected cross-analysis and discussion.
Anglicisms in Romanian and Serbian Hospitality and Tourism Discourse
Authors: Novakov Predrag , Lazović Mihaela 
Published: December 2024

Abstract
Being at the core of intercultural communication, hospitality and tourism industries have become the meeting point of different languages and cultures. Consequently, English terms, or anglicisms, are commonly integrated into Serbian and Romanian languages, particularly within tourism and hospitality contexts.
This paper analyses the impact of anglicisms on the Romanian and Serbian tourism and hospitality lexicons, offering insights into their assimilation within the respective discourses. Additionally, it deliberates upon the validity of using anglicisms in these contexts. The primary objective is to identify, analyse, and translate anglicisms found in the tourism and hospitality terminology of these two languages.
This study adopts a corpus-based approach, extracting data from various websites and promotional materials of Serbian and Romanian hotels, tourism organizations, and agencies. The findings emphasise the widespread usage of anglicisms in the discourse of tourism and hospitality, significantly influencing the Serbian and Romanian translation equivalents.
Exploring the Sound Absorption Characteristics of Biodegradable Agricultural Wastes, Coconut Fiber, Groundnut Shell, and Sugarcane Fiber
Authors: Gboe Nuushuun Archie , Ružickij Robert , Grubliauskas Raimondas 
Published: December 2024

Abstract
Noise pollution is a major global health issue, especially in large cities. Its effects go beyond mere annoyance, impacting health, emotions, and behavior. As noise levels rise, researchers are looking for better solutions to address this global issue, with natural fibers emerging as a promising option for sound absorption. Traditional synthetic materials used for sound absorption have negative environmental and health impacts, leading to growing interest in biodegradable natural fibers like coconut fiber, groundnut shell, and sugarcane fiber as safer alternatives. These materials absorb sound well and are environmentally friendly and safe for human health. This study explores the use of biodegradable agricultural waste fibers (coconut fiber, groundnut shell, and sugarcane fiber) for sound absorption. Samples with densities of 75 kg/m3, 100 kg/m3, and 125 kg/m3 were mixed with an equal percentage of non-toxic PVA binder. The sound absorption coefficient was measured according to the ISO 10534-2 standard. The results showed that the 75 kg/m3 sugarcane fiber sample had the highest average sound absorption coefficient of 0.94 at 800 Hz (mid-frequency range: 500–2000 Hz). The 125 kg/m3 coconut fiber sample came next, with the highest average sound absorption coefficient of 0.91 at 1000 Hz (mid-frequency range: 500–2000 Hz). The groundnut shell material showed the lowest sound absorption coefficient, the sample with a density of 125 kg/m3 had the highest average sound absorption coefficient of 0.81 at 3150 Hz (high-frequency range). These findings suggest that these natural materials could be effective for noise reduction in places like classrooms, libraries, and cafes. The approach aligns with global sustainability efforts while addressing the issue of noise pollution in large cities.
Assessment of the Filtration Stability of the Flood Control Levee on the Little Danube
Authors: Bednárová Emília , Škvarka Juraj , Grambličková Danka 
Published: December 2024

Abstract
Some of the accompanying phenomena of climate change that have been documented include extreme hydrological events. These significantly influence the hydrological regime of river basins, leading to more frequent occurrences of hydrological extremes such as floods and periods of drought (Melo et al., 2012, Svoboda et al., 2000). Long-term drought periods highlight the urgency of constructing water structures to create large-capacity artificial reservoirs to ensure water supplies during periods of scarcity. Intense short-term rainfall events underscore the increased need for flood control measures. Flood control levees are a significant component of flood control measures (Kotaška and Říha, 2023). Many of them, such as the Danube flood control levees, whose construction dates back to the reign of Maria Theresa (Pekárová et al., 2013; Halmová and Pekárová, P 2020), have been in operation for centuries. Considering their age, the long-term impact of hydrodynamic loading, as well as changing conditions, including hydrological, morphological, geological factors, etc., these water structures require attention. They include the right-bank flood control levee of the Little Danube River. This paper focuses on an analysis of the risk factors for the filtration stability of the levees’s subsoil under extreme hydrodynamic loading and the methodological approach applied in optimizing planned measures.
Incorporating Waste Plastic Bottles as an Additive in Asphalt Mixtures through a Dry Method
Authors: Bilema Munder , Mohamed Ahmed , Atiq Ibrahim , Maftah Salah , Alsaiti Ashraf Masoud 
Published: December 2024

Abstract
The rise in plastic waste is attributed to the varied types and sizes of containers used for liquids like mineral water, oils, detergents, etc. This increase in solid waste, which is driven by population growth, developmental activities, and changes in lifestyle, has led to a significant global issue. Plastic waste, known for its durability and lack of aesthetic appeal, poses a challenge in its disposal. This study aims to explore the Marshall engineering properties of asphalt mixtures infused with recycled plastic from water bottles (polyethylene terephthalate or PET) at concentrations of 0.25%, 0.5%, 0.75%, and 1% relative to the weight of the aggregates. The findings indicate that the inclusion of plastic improves the asphalt's stability to a certain point, beyond which its effectiveness diminishes due to the excessive plastic content. The study establishes that incorporating 0.5% plastic into the asphalt mixture meets all the criteria of the Marshall test, including stability, flow, air voids, VMA, and VFA. Therefore, it is concluded that 0.5% is the optimal percentage for the addition of plastic to enhance the Marshall properties of an asphalt mixture.
An “Integration Index” for Determining the Degree of Subsystem Integration in Passenger and Transport Aircraft Designs
Authors: Loginov Vasyl , Anipko Oleg 
Published: December 2024

ABSTRACT
This study addresses the scientific and technical challenge of evaluating the integrative properties of the complex technical system comprising an aircraft’s airframe and power plant during the phase of work on the preliminary design or modernization of passenger and transport aircraft. A novel “integration index” is proposed, which quantifies the degree of subsystem integration or compatibility by considering thrust, aerodynamic, and geometric characteristics, alongside design and layout solutions. The integration index may streamline early-stage parametric studies, by reducing design variants. The integration index’s dependencies on the characteristics of the aircraft engine and airframe are examined. The proposed approach can be used to conduct parametric studies at the stages of preliminary variant design of aircraft subsystems. This, in turn, will reduce the cost and time of designing new, significant upgrades of existing aircraft and their components. The methodology offers a practical tool for evaluating hybrid-electric and conventional aircraft systems, thus guiding the development of innovative and competitive aviation technologies.