bluuebunny/crossref_metadata_2025 huggingface dataset:
Optimizing AI for Assessing L2 Writing Accuracy: An Exploration of Temperatures and Prompts
Authors: Xu Yiran , Polio Charlene , Pfau Adam
Published: October 2024

This study investigates the impact of temperature and prompt settings on ChatGPT-4 in assessing second language (L2) writing accuracy. Building on Pfau et al. (2023), we used a corpus of 100 essays by L2 writers of English and examined how three temperature settings (0, 0.7, 1) and two prompt types (defined, undefined) influenced ChatGPT-4’s performance in error detection compared to human coding. Results indicated that ChatGPT-4, while generally underestimating error counts compared to human coders, showed a strong positive correlation with human coding across various settings. Notably, prompts with a detailed definition of errors yielded higher correlation coefficients (ρ = 0.826 to 0.859) than those without (ρ = 0.692 to 0.702), suggesting that more detailed prompts enhance ChatGPT-4’s performance. Descriptive statistics showed that with a less-detailed prompt, the error detection ability of ChatGPT-4 was nearly identical across temperature settings, yet with a more detailed prompt, ChatGPT-4’s performance was slightly better at higher temperatures. We discuss the importance of temperature in relation to prompt specificity for reliable L2 writing accuracy assessment and provide suggestions for optimizing AI tools such as ChatGPT-4 for assessing L2 writing accuracy.
The Impact of Current Crises on Selected Tourism Enterprises in Slovakia in the Context of Personnel Management
Authors: Šenková Anna , Kormaníková Erika , Patakyová Patrícia
Published: October 2024

The present study deals with the extremely topical issue of the im­pact of the three ongoing crises on selected business sectors. Its main objec­tive is to examine the impact of the COVID-19 pandemic, the military conflict in Ukraine and the energy crisis on selected business sectors in Slovakia in the context of personnel management. Information on the impact of these cri­ses on the selected sectors was obtained by questionnaire method in cooper­ation with the Republic Union of Employers and the Association of Hotels and Restaurants of Slovakia. Thus, in the example of 78 enterprises from the se­lected sectors, it was found that the most significant impact on these sectors was the impact of the pandemic and the energy crisis. In the conclusion of the study, we present proposals aimed at an integrated management model that considers the current state of the enterprises in the selected sectors after the im­pact of these crises has been felt.
Is Tourism in Slovakia Attractive? Analysis of Tourism Development in Slovakia​​
Authors: Bajusová Zuzana , Ladvenicová Jana
Published: October 2024

lovakia is a small country in terms of area, but from the point of view of tourism, it has a lot to offer both domestic and foreign visitors. It has a good geographical location, also from the point of view of combining the vis­it with other European neighboring states. The country is divided into 21 tour­ist regions. Like many industries, the tourism industry was most affected by the COVID-19 pandemic. The year 2019 was the most successful from the point of view of tourism in terms of all indicators related to tourism. In the contribu­tion, we focused on the development of selected indicators related to tourism in Slovakia and in individual regions for the period 2012-2022. During this pe­riod, there were an average of 3,950 accommodation facilities in Slovakia. The largest number of accommodation facilities were in the Žilina region. During this period, an average of 4,461,381 visitors visited Slovakia, with domestic and foreign visitors predominating. The average number of overnight stays of visi­tors for the analyzed period was 2.9. The average revenue for accommodation services reached the value of €345,065,476 during this period. The average ac­commodation price was at the level of €27.32, while the highest price was in the Bratislava region (average at the level of €35.05). The largest number of visitors from abroad was from the Czech Republic every year.
Conceptualizing Wine Festival Visitor Experience
Authors: Mitrović Srđan , Forjan Josipa
Published: October 2024

Festivals attract visitors outside of the tourist season and to desti­nations they would not otherwise visit because they provide memorable expe­riences based on visitor’s special interests. Wine festivals combine elements of wine and festival tourism and are a perfect opportunity to create unique expe­riences. Experience economy suggests that decisions on purchases (or travel) are made with a combination of rational (cognitive) and irrational (emotional) elements which are subjective and context-specific. The purpose of this research is to conceptualize a theoretical framework that explains the experience of wine festival visitors through its dimensions, ancen­dents and consequences. Results show that the wine festival experience is a multidimensional construct and a result of visitors’ interactions with the festival environment and is depen­dent on visitor’s motivations and involvement with wine. The proposed con­ceptual framework builds on existing knowledge, broadens the scope of ex­perience dimensions and provides a framework for empirical examination of wine festival experiences
Understanding the Dynamics and Impact of Dark Tourism
Authors: Vorina Anton , Pokorny Tinkara , Vorina Tina , Klicek Tamara
Published: October 2024

Purpose: This article explores the growing trend of dark tourism by investigat­ing its underlying motivations and potential future directions. Through a com­prehensive analysis, it uncovers the increasing popularity of this niche among diverse generations, shedding light on how destinations marked by tumultu­ous histories captivate tourists seeking to engage with the past. Aim: Our research focuses on three key areas: defining the core concept of dark tourism, evaluating its potential as a transformative force in the tourism indus­try, and crafting an idealized profile of a dark tourist. Methodology: This study employs a comprehensive literature review using sources from 2020 to 2023, accessed through Google Scholar and other aca­demic databases. A total of 25 sources were consulted to ensure a thorough un­derstanding of the topic. Ethical Issues: The ethical considerations of dark tourism include the desensiti­zation and trivialization of historical tragedies, the potential exploitation and over-commercialization of sensitive sites, and the importance of maintaining the authenticity and integrity of dark destinations. Findings: The results provide a comprehensive overview of dark tourism and its potential impact on the future of the tourism industry. Recommendations are offered on how destinations can responsibly attract and cater to dark tour­ists, ensuring that their visits are both meaningful and respectful of the histor­ical contexts.
Digital Reconstruction of Organizational Culture: Montenegrinian Tourism Entities Summary
Authors: Rađenović Žarko , Vlahović Olivera , Manojlović Mileva
Published: October 2024

One of the most important steps in raising the effectiveness of an organization’s operations is the digitalization of its culture and the develop­ment of a digital environment for its company. At all organizational levels, tourism entities should undertake the process of adopting information sys­tems and match them to the type of organizational culture. Therefore, the pur­pose of this work is to determine if organizational culture and its digital recon­struction and transformation in Montenegrin tourist entities, especially hotels, have a beneficial conjunction over five years. The anticipated findings, which were obtained at more than 100 hotels using the OCAI (Organizational Cul­ture Assessment Instrument) questionnaire and a few digital variables, should demonstrate that the organization has advanced considerably since going digital and that Clan’s organizational culture is now the most prevalent.
Teaching Tourism Marketing in the Post-covid Era: Evaluating the Virtual Adoption Project
Authors: Pécsek Brigitta
Published: October 2024

This paper analyses a project called Virtual Adoption, initiated by the Department of Tourism at the Eszterházy Károly Catholic University, Hungary with the aim of offering students to work closely with local SMEs during the COVID-19 pandemic. Marketing students follow a practice-ori­ented curriculum, however, in that case, they could test their knowledge in real-life situations. The hypothesis was that gathering real-life profession­al experience during critical times could have a multitude of benefits rang­ing from course commitment to obtaining better grades. This research com­bined class observation with a short student survey. It was found that partic­ipating students were more committed to the course, gained better marks and the dropout rate decreased to zero. The results of the survey pointed out that the benefit of gaining first-hand experience came on top when asked about motivation and experience related to the project. The findings are in line with the arguments of educational scholars calling for more coopera­tion between education and industry.
Legal Aspects of Consumer Protection in the Promotion of Tourist Services
Authors: Stanković Aleksandra , Cvjetković Milena , Cvjetković Milovan
Published: October 2024

With the research presented in the study, the authors aimed to show the impact of consumer protection from a legal perspective on the promotion and satisfaction of users of tourist services. The research sam­ple included 294 users of tourism services. The correlation analysis showed statistically significant values and indicated a significant relationship be­tween the variables of consumer protection from a legal point of view and the variables of promotion and user satisfaction. The regression mod­el showed that the variables of access to services and the safety of service users had the greatest individual contribution to user satisfaction. The re­search showed that there are statistically significant correlation values of agreement with the analyzed variables when it comes to consumers' abili­ty to allocate funds for tourist services. The mentioned research has shown the variables whose improvement can increase the satisfaction of the us­ers of tourist services.
Development of a Decision Support System for University Administration: Integrating Business Process Management and Multidimensional Data Analysis
Authors: Ergun Hakan
Published: October 2024

The paper provides an overview of decision support systems to demonstrate their role in supporting decision-making in university administration. Enhancing university performance and modernizing university administration must be top priorities for university leaders and decision-makers since quality is the foundation that supports innovation. Good decision-making is the first step towards efficiency and quality in the academic setting. The article's main topic is developing IT solutions to support decision-making business processes of student admission. By utilizing models of university business processes and applying business intelligence principles, with the support of multidimensional data analysis, it can be effectively introduced and integrated. The study attempts to provide selection criteria for selecting a development environment for creating a support system focused on university management based on data from the student information system database and the author's personal experience. The contributions include creating OLAP analytical models and a data warehouse model to support university managerial decisions.
ENLACES DE VIDA-FORMAÇÃO NA DIDÁTICA NO ENSINO SUPERIOR: ECOS DE UMA EMENTA NA FORMAÇÃO INICIAL DE PEDAGOGOS
Authors: DA SILVA FIGUEIRA Sandro Tiago
Published: October 2024

Considerando a Didática um campo epistemológico (Libâneo, 2020), que reconhece a atuação profissional docente num contexto multidimensional (Candau, 2020), nos debruçamos em um estudo para compreender a organização e sistematização da disciplina de didática no curso de Pedagogia em uma universidade federal do noroeste fluminense. Partimos da abordagem qualitativa, tendo a metodologia de análise documental para responder nossa questão inicial: Qual a concepção didática presente na ementa da disciplina de didática no curso de Pedagogia? Os resultados apontam que ao integrar temáticas e leituras de diferentes temporalidades, as ementas contribuem para reconfiguração da didática, dimensionando implicações políticas e sociais. Conclui-se que o alinhavar dialógico com as subjetividades dos licenciandos e o cotidiano escolar, fomenta a experiência de olhar a memória, a formação e a realidade em direção à construção de devires docentes com os ecos do cotidiano marcado e implicado nas andanças de vida-formação.
Becoming an Israeli Reform Jewish Movement
Authors: Ben-Lulu Elazar
Published: October 2024

The Israeli Movement for Reform and Progressive Judaism has grown considerably in recent years. Fifty congregations and initiatives now operate throughout the country, offering prayer services, holiday and life-cycle ceremonies, study houses, conversion courses, pre-army programs, and more. Despite its increased presence in Israeli life, the movement is still known among the general public mainly for its struggle to achieve equal status and gain official recognition. In fact, the very term ‘Reform Jew’ still carries a derogatory connotation in many sectors of society. This article describes the major turning points encountered by the Israeli Reform Movement in its quest for recognition, the arenas in which it operates and parties with which it negotiates, and the ways in which it differs from its counterpart in North America. While the article focuses on a single movement in the Israeli marketplace of religious identities, it seeks to shed light on religion–state relations and changes in the Jewish world more generally.
Strategies to Legitimize and Enhance the Popularity of the Reform Marriage Ceremony among Israeli Jews
Authors: Golan-Nadir Niva
Published: October 2024

What strategies are used to legitimize and enhance the popularity of the Reform marriage ceremony among Israeli Jews? Using a mixed-method grounded-theory technique, this study stresses that the strategies used to legitimize and enhance the popularity of the Reform marriage ceremony among Israeli Jews take place in two parallel realms: the organizational and the individual. At the organizational level, the Israel Reform Movement invests resources into institutionalizing the Reform marriage ceremony in Israel, using the judicial and the political strata to accomplish this goal. At the same time, at the individual level, Reform rabbis operate as street-level policy entrepreneurs by enhancing the visibility of the Reform marriage ceremony among Israeli Jews by advertising themselves and conducting as many ceremonies as possible.
The Tale of Darkness in Amos Oz's Literary Work
Authors: Nethanel Lilah
Published: October 2024

In this article, I present an analysis of Amos Oz's writings, from his early collection of stories, Where the Jackals Howl (1965) to his autofictional novel A Tale of Love and Darkness (2002). Throughout the tumultuous first five decades of Israel's Independence, Oz's oeuvre consistently expressed an implicit tale of darkness. Darkness is the key figure of the national abyss in Oz's literature. As a political category, Oz's interpretation of darkness bears the traces of postcolonial literature, where darkness is a root metaphor; as a poetic principle, darkness holds the unsaid within the literary text. Marking the unsaid, darkness turns to be a recall for depth hermeneutics, as it acknowledges “the hidden” as a core category of meaning in national literatures.
Book Reviews
Authors: Collins-Kreiner Noga , Peled Yoav , Naor Moshe , Mazza Roberto , Jacoby Tami Amanda , Broyde Michael J. , Feldman Rachel , Zelkovitz Ido
Published: October 2024

Shay Rabineau. Walking the Land: A History of Israeli Hiking Trails (Bloomington: Indiana University Press, 2023), 304 pp., $35 (paperback).

Shlomo Ben-Ami. Prophets Without Honor: The 2000 Camp David Summit and the End of the Two-State Solution (Oxford: Oxford University Press, 2022), 400 pp., $31.99 (hardback).

Anat Stern. Combatants on Trial: Military Jurisdiction in Israel during the 1948 War [In Hebrew.] (Jerusalem: Yad Ben-Zvi, 2021), 340 pp., NIS 80 (paperback).

Vincent Lemire. In the Shadow of the Wall: The Life and Death of Jerusalem's Maghrebi Quarter, 1187–1967 (Stanford, CA: Stanford University Press, 2023), 400 pp., $32 (paperback).

Rob Geist Pinfold. Understanding Territorial Withdrawal: Israeli Occupations and Exits. (Oxford: Oxford University Press, 2023), 344 pp., $83 (hardback).

Rogachevsky, Neil, and Dov Zigler. Israel's Declaration of Independence: The History and Political Theory of the Nation's Founding Moment (Cambridge: Cambridge University Press, 2022), 300 pp., $39.99 (paperback)

Taragin-Zeller, Lea. The State of Desire: Religion and Reproductive Politics in the Promised Land (New York: New York University Press, 2023), 200 pp, $28 (paperback).

Segal, Jerome M. The Olive Branch from Palestine: The Palestinian Declaration of Independence and the Path Out of the Current Impasse (Berkeley: University of California Press, 2022), 316 pp., $29.95 (hardcover)
Impact of radicalism and terrorism through social media among youth in the Film The Lone Wolf Next Door
Authors: Al Ansory Muchammad Zaenal , Adi Anggar Erdhina
Published: October 2024

This research delves into the detrimental impacts of social media utilization among young individuals as a conduit for radicalism and terrorism propagation. Focusing on "The Lone Wolf Next Door," the study illustrates the journey of Alif Himawan, a high school student entrapped in jihad ideology disseminated through social platforms. Alif's trajectory escalates as he acquires bomb-making skills, culminating in church suicide bombings. The research aims to portray societal realities through cinematic portrayal, drawing from the 2016 Medan tragedy involving Ivan Armadi Hasugian as inspiration. By analyzing the filmmaking process of "The Lone Wolf Next Door," the study endeavors to shed light on pertinent issues. Employing a realism approach, the film is not only scrutinized as a cinematic entity but also serves as a discourse platform regarding realism's intersection with radicalism and terrorism. Methodologically, descriptive qualitative analysis facilitates reality reconstruction, utilizing primary and secondary data from literature reviews, observations, and interviews. The findings highlight the pivotal role of film in broadening deradicalization efforts targeting the youth demographic. In conclusion, "The Lone Wolf Next Door" not only serves as a cinematic narrative but also contributes to the discourse on countering radicalism, emphasizing the significance of media in societal intervention strategies.
Strategies and techniques for crafting a scientific manuscript for artistic publication: a guide for academic artists in Indonesia
Authors: Sularso Sularso , Cahyono Agus , Yu Qinyu , Suranto Joko , Mistortoify Zulkarnain , Budhi Lardianto
Published: October 2024

Scientific publications in the field of art creation have sparked considerable debate within the academic community in Indonesia. Issues such as the validity of artworks, assessment criteria, publication formats, and the alignment of academic standards with artistic practice have generated discussions regarding the format of publication writing. This article aims to offer alternative guidance on techniques for writing scientific publication articles in the field of art creation, particularly tailored for academic artists in Indonesia. The guidance encompasses a literature review, the selection of an appropriate methodology, the provision of relevant examples and illustrations, the application of a reflective analytical approach, the clear presentation of data and results from art creation research, as well as the development of an appropriate writing structure and language. Through this study, academic artists in Indonesia stand to benefit significantly. First, they can enhance the quality of their publications by adhering to the provided writing technique guidelines. These guidelines will aid in fortifying the substance of their articles, organizing data in a structured manner, and conveying thoughts and ideas more clearly and effectively. Second, by employing this guide, academic artists can improve their ability to disseminate their thoughts, ideas, and artistic knowledge more widely. This will enable them to contribute to the global arts community through high-quality scientific publications. By enhancing the quality of publications and fostering more effective dissemination of ideas, this research will contribute to the development and recognition of Indonesian academic artists on the global stage. Through the enhancement of publication quality and the improved dissemination of artworks, Indonesian academic artists will be better positioned to make significant contributions.
On undecidability of subset theories of some unars
Authors: Karlov B. N.
Published: October 2024

This paper is dedicated to studying of the algorithmic properties of unars with an injective function. We prove that the theory of every such unar admits quantifier elimination if the language is extended by a countable amount of predicate symbols. Necessary and sufficient conditions are established for the quantifier elimination to be effective, and a criterion of decidability of theories of such unars is formulated. Using this criterion we build a unar such that its theory is decidable, but the theory of the unar of its subsets is undecidable.
On kernels of invariant Schrödinger operators with point interactions. Grinevich–Novikov problem
Authors: Malamud M. M. , Marchenko V. V.
Published: October 2024

According to Berezin and Faddeev, a Schrödinger operator with point interactions−△+∑j=1mαjδ(x−xj),X={xj}1m⊂ℝ3,{αj}1m⊂ℝ, is any self-adjoint extension of the restriction−△xof the Laplace operator−△to the subset{f∈H2(R3):f(xj)=0,1≤j≤m}of the Sobolev spaceH2(ℝ3). The present paper studies the extensions (realizations) invariant under the symmetry group of the vertex setX={xj}1m of a regular m-gon. Such realizations HB are parametrized by special circulant matrices B∈ℂm×m. We describe all such realizations with non-trivial kernels. А Grinevich–Novikov conjecture on simplicity of a zero eigenvalue of the realization HB with a scalar matrixB=αI and an evenis proved. It is shown that for an odd m non-trivial kernels of all the realizationswith scalarare two-dimensional. Besides, for arbitrary realizations B≠αIthe estimatedimkerB≤m−1is proved, and all the invariant realizations of the maximal dimensiondimkerB=m−1are described. One of them is the Krein realization, which is the minimal positive extension of the operator−△x.
Maximum induced trees in sparse random graphs
Authors: Buitrago Oropeza J. C.
Published: October 2024

We prove that a.a.s. for anyε0andn−e−23e−2+ε≤p=o(1)the maximum size of an induced subtree of the binomial random graphGn,pis concentrated in 2 consecutive points.
Research on the Optimal Power Allocation Method of Industrial Park Users Based on Carbon Emissions
Authors: Chang Yanping , Dang Pengjun , Liu Xuesong , Shi Yunhui , Chang Jingren , Gui Junfeng
Published: October 2024

Aiming at the problems of single power optimization in actual industrial parks without considering environmental factors, a method for optimal power allocation to industrial park users based on carbon emissions is proposed. Firstly, a multi-objective power optimization model is established, which includes the economic benefit objective of comprehensive power generation cost and the environmental benefit objectives of peak-to-valley difference and carbon emission. Secondly, the improved particle swarm algorithm is used for multi-objective optimization solving, combining the traditional particle swarm algorithm with the immunity principle, replacing subjective weights with objective assignments, and avoiding the local optimum problem. Finally, the load data of some users in the industrial park are brought in and the data indicators before and after optimization of the park are compared and analysed.
Iron Concentrate Flow Inductive Sensing and Detection Technology
Authors: Li Xuhui , Li Qing , Liu Bingjie , Zhang Xianyang , Wang Jun
Published: October 2024

In order to effectively monitor the flow rate of pipeline transportation and the effective iron content of iron concentrate pulp, the methods of inductance detection and coherence analysis are used to detect the flow rate and iron content. According to the ferromagnetic substances contained in the iron concentrate pulp will change the permeability characteristics in the coil, the coil is connected to the bridge to get an electrical signal, and the time required for the pulp to flow from one coil to another coil is calculated by coherence analysis. In addition, according to this property, the relationship between the signal and the iron content can be deduced by detecting the change of the signal. The experimental results show that the method can accurately detect the flow rate of iron concentrate pulp, and can directly reflect the relationship between iron content and detection signal.
Uncertainty Assessment of Energy Meter Calibration Devices Based on MID Certification of Energy Meters and Its Application in Evaluating Test Results
Authors: Yang Mei , Chen Qian , Qin Zongya , Wang Weizhao , Liu Xiao , Zhang Shuyu , Zhao Gege
Published: October 2024

This paper compares the latest requirements of EU 50470 series standards on the metrological performance of active energy meters and the differences in specification labelling, gives a typical example of uncertainty assessment of energy meter calibration device applicable to MID certification, and focuses on its application in the assessment of test results of energy meters, which provides support for the reliability of the calibration results of the energy meter calibration device and the assessment of conclusions of the test results of the energy meters for the MID certification.
Digital Manufacturing of Precast Members for Long-Span Wall Panel in Power Distribution Unit of Substation
Authors: Gao Xian , Lin Shaoyuan , Wang Yuping , Chen Xilong , Pei Hao
Published: October 2024

The precast members for the large-span wall panels in the power distribution unit of substation are of large size. When the load distribution between the wall panel and the precast members is nonuniform and concentrated in some local areas, the stress in the local area will exceed the designed load. The stress concentration will result in the insufficient bearing capacity of the local precast member, and furthermore influence the whole performance of the wall panel and the practical application. In this paper, the key technology of digital manufacturing of large span wall panel precast parts in power distribution device building is proposed. The size data, shape data, material property data and connection mode data required by the wall are collected, then the wall model is established through the definition of the structure parameters using different commands in the BIM software. The correlation degree between the wall panel parameters and the precast member parameters is calculated, and the optimal mapping relationship of the structural parameters considering the strength of local member under concentrated load is obtained. Through virtual assembly of precast parts, combined with intelligent means such as collision detection, the digital production mode of precast member of the wall panel is constructed. The simulation test results show that the precast member model of the wall panel built by the proposed method fits well with the actual wall panel, with fit degree larger than 0.92, and the proposed method has better application effect.
Trajectory Optimization of Multi-Pass Aeroassisted Orbital Transfer by Sequential Convex Programming
Authors: Feng Xiangdong , Han Hongwei , Chen Jilin
Published: October 2024

Aeroassisted transfer technology is that spacecraft utilizes aerodynamic forces generated during atmospheric flight to alter orbit dimensions or achieve changes in orbital inclination, which offers advantages in fuel cost. In this paper, a multi-pass aeroassisted orbit transfer scheme is proposed, with only deorbit and insertion maneuver impulse. On this basis, the optimal control problem of multi-pass is constructed with the bank angle as the control variable. The detailed derivation of the optimization problem with interior constraint and the endpoint constraint is given. After that, the non-linear problem is transformed into a convex problem, and a sequential convex optimization method is used to solve the optimal control problem numerically. Simulation show that the multi-pass aeroassist transfer has lower peak values of heating rate, dynamic pressure, and load factor. Compared to initial trajectories with constant bank angle, the scheme can save over 30% in fuel consumption.
Estimated Mathematical Model for Controlling Distance of AGVs with Differential Drive Systems
Authors: Kosiyanurak Akkharachai , Pothi Nattachai , Prasoetkarn Natthawut , Srisertpol Jiraphon
Published: October 2024

This paper investigates the estimation of a straightforward mathematical model tailored for overseeing and regulating the motion of an AGV (Automated Guided Vehicle) equipped with differential drive systems. The mathematical model delineates the correlation between the input voltage signal of the DC motor and the resultant distance output, empirically tested within an open-loop system. This methodology facilitates the development of precise mathematical models aimed at mitigating errors in powertrains and mechanical motion components, including gears, chains, and ground-contacting tires, along with system friction. Moreover, a P controller system is devised to oversee the AGV motion. The stability and control efficacy are assessed through practical experimentation on the AGV’s ability to attain predefined distances. Tests were conducted under two distinct conditions: case 1) AGV operation without any payload and case 2) AGV operation while bearing a 14 kg payload. The system’s response to the input distance was meticulously observed. The average distance error is calculated at 1.74% of the designated control distance (2m, 3m, and 4m) across all cases. In the absence of a load (case 1), the average distance error remains consistent at 1.74% of the control distance, showcasing a motor speed response of 23.76 RPM (with a rise time of 2.1 s). Conversely, when subjected to a 14 kg payload (case 2), the average distance error marginally increases to 1.76% of the control distance, with a corresponding motor speed response of 23.71 RPM (and a rise time of 2.2 s). These results show the effectiveness of the control system, facilitated by the estimation of a simplistic mathematical model tailored specifically for AGV operations.
Exploring Techniques for Estimating Distance in Leader-Follower AGV Systems
Authors: Muenngam Chetsadakorn , Khaewnak Nopparut , Srisertpol Jiraphon , Prasoetkarn Natthawut
Published: October 2024

The application of Automated Guided Vehicles (AGVs) for workpiece transportation in production processes is commonplace, particularly in the context of Industry 4.0. However, the high cost associated with AGVs presents a significant challenge. This paper proposes an approach to AGV tracking using a combination of camera-based QR code detection and ultrasonic sensors. The objective is to regulate the distance between leading and following AGVs, thereby addressing the operational costs associated with expensive equipment. Experimental investigations were conducted to assess the performance of QR symbols and color bars under varying lighting conditions, ranging from 200 lux to 650 lux. Accurate distance measurements were achieved within a range of 150 cm. In lower lighting conditions (100 lux to 250 lux), the RGB color bar detection failed at distances below 40 cm, whereas QR Code detection remained robust. Angle measurements demonstrated accurate readings up to 30 degrees from the camera’s center, within distances of 50 to 125 cm, with an anticipated deviation of no more than 0.5 degrees. Subsequently, QR code symbols were chosen as the experimental control symbol, complemented by ultrasonic sensors for inter-vehicle distance maintenance. During practical testing, if the measured distance falls below 60 cm. while moving in a straight line, the motor ceases operation. Conversely, if the distance exceeds 80 cm, the motor activates, allowing the follower AGV to uphold the specified distance behind the leader AGV.
A Kinetic Model of Impact for Bipolar Crown Buffer Foot
Authors: Li Ruilong , Chen Zhiyuan , Wu Jiadong , Wang Xuelin , Zhu Shuai
Published: October 2024

An accurate foot end impact kinetic model is an important prerequisite for designing a bipolar crown foot end buffer mechanism. Based on spring damping model and foot-ground interaction mechanical model, a foot impact kinetic model is established considering the bipolar buffer of the ground-contact sensing spring and the approximate complete plastic deformation of the ground. The accuracy of the model and the feasibility of buffering are verified by assigning various parameters in the model using the existing experimental data. The influence of stiffness and damping on buffering effect is studied by controlling variables, which provides theoretical basis for optimizing foot buffering element of bipolar crown buffering.
Prediction of Fluted Roll Metering Device Performance Using 3D DEM with Ellipsoidal Particle Model
Authors: Li Zhengquan , Zhang Boqun
Published: October 2024

In this paper, the three-dimensional (3D) boundary model of fluted roll metering device is established. The three-dimensional ellipsoid seed model was established by using the method of four spheres combined with ellipsoid seed model. The performance and seeds behaviors are researched by using the self-developed 3D Discrete Element Method (DEM) software at microscopic and macroscopic levels. The performance of the fluted roll metering device and seed behavior were predicted, analyzing the flow, velocity, and trajectories of seeds at various rotational speeds. Comparative studies between simulation and experimental results reveal that at the exit of the seed metering device, the speed of the seeds is predominantly influenced by the rotational speed of the roller, while their motion trajectory is least affected by the roller. The mechanism of controlling the performance of groove roll metering device is further understood. The results show that the reliability and feasibility of measuring device for groove roll are analyzed by using 3D digital model.
Design of Burr Detection System for Inside the Shaft Holes Using Computer Vision
Authors: Kawvijit Nattapat , Wanthong Irin , Srisertpol Jiraphon , Khaengkarn Sorada
Published: October 2024

The automotive sector aims to reduce the production of scraps or burrs, which requires the adoption of a deburring procedure and the utilization of inspection techniques. The existing inspection procedures involve the use of visual examination techniques. Nevertheless, as a result of the substantial quantity of components that necessitate examination and the small dimensions of the hole. Inspectors get weariness after prolonged periods of work. It commits errors with such ease. This study aims to investigate and develop a system for the inspection of burrs in shaft holes resulting from drilling operations. A system was designed to support the workpiece for examination holes of two different diameters-5 millimeters and 3 millimeters. The process of inspection sequentially examines each hole individually after the workpiece is positioned within the fixture. The image will be captured by the system via web camera, subsequently imported into the image analysis procedure via the blob analysis method, and finally converted to binary format. In the case of a defective hole, including the burr, a clean hole image will display a larger pixel on the bright or white side compared to the white side pixels. The confusion matrix was utilized for the purpose of evaluating accuracy. The 320 x 240 resolution with F-Score of 0.933 was selected for the system due to its efficient processing speed (18.6 seconds), lack of false positives, and capacity to optimize storage space.
Multi-Objective Milling Parameter Optimization Base on a Novel Differential Evolution PSO Towards Minimum Energy Consumption
Authors: Wei Pengxuan , Wang Liping , Li Weitao
Published: October 2024

Machine tools play a vital role in the manufacturing industry and their wide application leads to high energy consumption. Considering energy saving and emission reduction, it becomes particularly important to reduce the energy consumption of machine tools while improving processing efficiency. Selecting appropriate milling parameters while optimizing the processing power and efficiency of the machine tools is a challenge. In this paper, an adaptive multi-objective differential evolutionary PSO based on analytic hierarchy process (AMDEPSO) is proposed to optimize the two objectives. Firstly, an accurate multi-objective optimization model integrating the processing power and time of machine tools is established. In order to solve this optimization model, this study sets adaptive weights based on PSO and incorporates the differential evolution (DE) method to update particles in the local search. Subsequently, the Pareto solution set is filtered to obtain the optimal solution through analytic hierarchy process (AHP). Finally, the algorithm is verified by processing experiments, and compared with the two existing methods, the proposed method effectively reduces the processing power and improves the processing efficiency. Combining the relationship between the two optimization objectives, it can be obtained that the algorithm reduces the machining energy consumption by 45.58% and 47.15% respectively.
Analysis of Temperature Field Characteristics for Automobile Alternator with Twisted Blades
Authors: Fang Xiaogang , Huang Yan , Jiang Xiaowen , Dong Dawei
Published: October 2024

The characteristics of temperature distribution of an automobile alternator with torsional blades are analyzed in this paper. Firstly, the experimental test rig and the numerical model are established. The consistency between experiment data and simulation results is verified. Then, the effects of the torsion angles on temperature characteristics are explored and their mechanisms are revealed through fluid flow and heat dissipation analysis. The results show that the twisting of the rear fan blades can improve the heat dissipation performance, and when the torsion angle is positive the heat dissipation performance of the alternator is greatly improved with an increasing mass flow rates.
AFS-YOLO: Steel Surface Defect Detection Algorithm Based on Enhanced Multi-Layer Fusion Network
Authors: Li Hanlin , Liu Ming , Sun Weiliang
Published: October 2024

In response to the challenges of limited dataset size and low image resolution in steel surface defect datasets, leading to suboptimal recognition accuracy and overall performance of deep learning algorithms, this paper proposes a deep learning-based model for steel surface defect detection. Leveraging the AFPAN (Asymptotic Feature Pyramid Network) as the fusion network, the model utilizes the YOLOv8 backbone network for feature extraction. Additionally, it introduces the SPD-Conv (Space-to-Depth) block and the EffectiveSE (Effective Squeeze-and-Excitation) attention mechanism, specifically designed for low-resolution images. While maintaining a low parameter count, the model significantly enhances performance. Compared to algorithms such as SSD (Single Shot MultiBox Detector) and DETR (DEtection TRansformer), our algorithm achieves a more balanced Precision and Recall, without exhibiting a noticeable imbalance between the two metrics. Additionally, it surpasses algorithms like RT-DETR (Real Time-DEtection TRansformer) in terms of accuracy and comprehensiveness. In contrast to the YOLO (You only look once) series, the improved network exhibits optimal performance in smaller models, achieving a 4.8% precision improvement and a 3.2% increase in mAP (mean average precision). Experimental results on the NEU-DET (NEU surface defect database) dataset affirm that, compared to the YOLOv8s model, our proposed model excels in accurately and comprehensively identifying defect positions and edges in defect detection.
An Anchor-Free Detection Model with Shape Prior Label Assignment for Steel Defects
Authors: Gao Shuo , Cui Xiwen , Si Guojin , Zheng Meimei , Xia Tangbin , Xi Lifeng
Published: October 2024

High-precision defect recognition and positioning on the steel surface provide essential information for post-processing. However, due to the complex characteristics of the steel plate surface, the aspect ratio for surface defect varies greatly with irregular shape. Therefore, a new detection model is proposed with shape prior label assignment (ADMS) based on deep learning theory for multiple types of steel plate surface defects. A shape prior is developed to model the geometry shape of multi-class defects. Combined with the prior, a soft-weighted anchor-free label assignment method is designed to ensure consistency for classification and localization tasks for defects with different geometry distributions. This ADMS has been proven to achieve higher precision in solving challenging problems caused by the variety of aspect ratios, multi-class defect types, and irregular shapes.
Genetic Algorithm Based on Predation Search Strategy
Authors: Ji Wanfeng , Xie Jinpeng
Published: October 2024

Genetic algorithm has been widely used in route planning problems due to its strong global search ability by simulating material changes in nature, as well as biological activities and evolution processes. Predation search strategy is a spatial search strategy used to solve combinatorial optimization problems. By simulating the predatory behavior of animal populations, it can effectively balance global exploration ability and local development ability. This article proposes a genetic algorithm based on predation strategy, which optimizes the search efficiency of the genetic algorithm by dynamically adjusting the crossover probability and mutation probability. Through example verification, this algorithm has better comprehensive search ability compared to basic genetic algorithms and adaptive genetic algorithms, and has been successfully applied in route planning.
Descentralización y pobreza: Un análisis para la región Caribe colombiana
Authors: Barrios-Bueno Paula , Álvarez-Voz Oriana , Arza-Castilla Necti
Published: October 2024

El presente estudio explora la relación existente a nivel espacial entre la descentralización fiscal y la pobreza en 1.101 municipios de Colombia, mediante el uso de datos que reflejan la privación de bienes materiales y no materiales (Índice de Pobreza Multidimensional, IPM) y la dependencia de los recursos de transferencias en dos años, 2005 y 2018. Se propone el uso del índice de Moran bivariado para llevar a cabo la investigación. Los resultados muestran una marcada agrupación espacial positiva y destacan la vecindad entre municipios con altos niveles de pobreza y una fuerte dependencia de las transferencias. Esta agrupación ha experimentado un aumento en magnitud en los años más recientes, particularmente en las zonas periféricas del país, con especial énfasis en la región Caribe. Las recomendaciones se dirigen al fortalecimiento de las herramientas que propician el recaudo de los principales tributos municipales (predial e industria y comercio) y a la mayor flexibilidad en el uso de los recursos recibidos por transferencias considerando las heterogeneidades fiscales y de bienestar de los territorios.
Громадянська ідентичність на перетині суспільних змін. Препринт за результатами Всеукраїнського опитування учнівської молоді та освітян з проблеми формування громадянської ідентичності
Authors:   Institute of Problems of the NAES of Ukraine  Kyiv, Okushko Tetiana , Kharchenko Nataliia ,   Institute of Problems of the NAES of Ukraine  Kyiv, Malynoshevskyi Ruslan ,   Institute of Problems of the NAES of Ukraine  Kyiv, Kyreieva Anzhela ,   Institute of Problems of the NAES of Ukraine  Kyiv
Published: October 2024

The Preprint presents the results of the All-Ukrainian survey on the issue of forming the civic identity of schoolchildren amid extraordinary social changes. Emphasis is placed on a range of problems that need to be addressed to improve the process of educating schoolchildren's civic identity. A total of 6,482 schoolchildren and 4,806 adults, including educators, scientists, and representatives of the parent community from 23 regions of Ukraine, participated in the online survey. The survey was conducted using Google Forms from February 2 to February 29, 2024. Based on the survey results, the responses to questions regarding the formation of the civic identity of schoolchildren-particularly during the defense of Ukraine's state independence in the brutal war with Russia - were analyzed. The survey results will provide a systematic perspective on the issue of forming the civic identity of student youth, help define content guidelines, and foster the development of partnerships between social institutions in civic education and upbringing. These findings can be applied in developing educational programs for schools, improving educators’ qualifications in the system of postgraduate pedagogical education, and the work of education authorities, academic institutions, and public organizations involved with children and youth. The Preprint was prepared within the Laboratory of Moral, Civic, and Intercultural Education research framework for use in further scientific work and pedagogical practice.
Professional training of a foreign language and world literature teacher at the second (master’s) level of higher education: content and structure of the educational program
Authors: Zienia Liubov , Boretska Hanna , Swyrydjuk Vira
Published: October 2024

The article presents an educational program for the specialty 014 Secondary Education (subject specialization in Language (German / French / Spanish) and World Literature) for the professional training of Foreign Language and World Literature teachers at the second (master’s) level of higher education. The proposed educational program is developed in accordance with current state documents in the field of higher education and aims to enhance the quality of professional training for pre-service Foreign Language and World Literature teachers. The program outlines the integral, general, and professional competencies that these pre-service teachers are expected to develop. It also details the anticipated learning outcomes and the educational components designed to ensure their achievement. The program’s content is organized in a clear structure, with its components forming a logically interconnected system that supports the attainment of the stated goals and learning outcomes. Professional training within the program includes school teaching practices, which help pre-service Foreign Language and World Literature teachers develop constructive, organizational, communicative, and research skills, along with the ability for continuous personal and professional growth and lifelong learning. The logical sequence of the program’s components and their interdisciplinary connections are illustrated in a structural-logical scheme.