bluuebunny/crossref_metadata_2025_split huggingface dataset:
Re-Examining the Impact of Public Education Expenditure on South African Literacy
Authors: Muzekenyi Mike , Nyika Farai , Anyikwa Izunna , Kemda Lionel Establet 
Published: July 2023

Abstract
Much empirical literature has focused on investigating the role of government expenditure in promoting long-term economic growth in South Africa. However, few studies in comparison have considered the impact of government spending on literacy level in the country. To this end, this paper examines the impact of government spending on literacy rate in South Africa using an Autoregressive Distributed Lag (ARDL) model with annual time series data over the period from 1994 to 2021. The key findings of this study are: (a) there is evidence of a long run relationship between government spending on education and the literacy rate in South Africa; (b) while the long run effect of government education spending on literacy is not significant, there is a statistically significant positive effect in the short run. These findings have several implications for policymakers and other stakeholders. Therefore, the study recommends that increased monitoring and evaluation mechanisms are desirable in the primary and secondary education sectors for accountability and reducing wastage of taxpayer funds. The Department of Education is also encouraged to re-consider current teacher training practices and fill long standing vacancies in the school sector that negatively impact education outcomes.
Detecting abnormal behavior in megastore for intelligent surveillance through 3D deep convolutional model
Authors: Aquib Ansari Mohd. , Singh Dushyant Kumar , Singh Vibhav Prakash 
Published: July 2023

Abstract
The use of neural networks in a range of academic and scientific pursuits has introduced a great interest in modeling human behavior and activity patterns to recognize particular events. Various methods have so far been proposed for building expert vision systems to understand the scene and draw true semantic inferences from the observed dynamics. However, classifying abnormal or unusual activities in real-time video sequences is still challenging, as the details in video sequences have a time continuity constraint. A cost-effective approach is still demanding and so this work presents an advanced three-dimensional convolutional network (A3DConvNet) for detecting abnormal behavior of persons by analyzing their actions. The network proposed is 15 layers deep that uses 18 convolutional operations to effectively analyze the video contents and produces spatiotemporal features. The integrated dense layer uses these features for the efficient learning process and the softmax layer is used as the output layer for labeling the sequences. Additionally, we have created a dataset that carries video clips to represent abnormal behaviors of humans in megastores/shops, which is a consequent contribution of this paper. The dataset includes five complicated activities in the shops/megastores: normal, shoplifting, drinking, eating, and damaging. By analyzing human actions, the proposed algorithm produces an alert if anything like abnormalities is found. The extensive experiments performed on the synthesized dataset demonstrate the effectiveness of our method, with achieved accuracy of up to 90.90%.
Effective deep learning-based channel state estimation and signal detection for OFDM wireless systems
Authors: Hassan Hassan A. , Mohamed Mohamed A. , Essai Mohamed H. , Esmaiel Hamada , Mubarak Ahmed S. , Omer Osama A. 
Published: July 2023

Abstract
Deep learning (DL) algorithms can enhance wireless communication system efficiency and address numerous physical layer challenges. Channel state estimation (CSE) and signal detection (SD) are essential parts of improving the performance of an OFDM wireless system. In this context, we introduce a DL model as an effective alternative for implicit CSE and SD over Rayleigh fading channels in the OFDM wireless system. The DL model is based on the gated recurrent unit (GRU) neural network. The proposed DL GRU model is trained offline using the received OFDM signals related to the transmitted data symbols and added pilot symbols as inputs. Then, it is implemented online to accurately and directly detect the transmitted data. The experimental results using the metric parameter of symbol error rate show that, the proposed DL GRU-based CSE/SD provides superior performance compared with the traditional least square and minimum mean square error estimation methods. Also, the trained DL GRU model exceeds the existing DL channel estimators. Moreover, it provides the highest CSE/SD quality with fewer pilots, short/null cyclic prefixes, and without prior knowledge of the channel statistics. As a result, the proposed DL GRU model is a promising solution for CSE/SD in OFDM wireless communication systems.
On adding security to RLL - LDPC CCSDS codes without additional redundancy
Authors: Farkaš Peter 
Published: July 2023

Abstract
In this paper it is presented that security can be added to three RLL LDPC codes specified by the Consultative Committee for Space Data Systems codes without additional redundancy and if some round conditions are valid, this can be done without the necessity to change the encoding and decoding procedures. The concept for obtaining lightweight security could be of interest for space communication, for communication in IoT or other networks in which the nodes are resource constrained.
Pulse diffraction by a circular dielectric cylinder
Authors: Tabatadze Vasil , Drobakhin Oleg , Karaçuha Kamil 
Published: July 2023

Abstract
In this article, the periodic pulse diffraction from the circular dielectric object radiated by the horn antenna is investigated and experimental verification is provided. The pulse spectrum with Hamming weight function (Hamming window) form occupies the frequency band of 38 – 52 GHz. The problem is solved using the Method of Auxiliary Sources, and the results of the computer simulation are obtained. The fundamental advantage of the method is to eliminate the singularity problem during the solution of the integral equation obtained by boundary conditions on each scatterer. The comparison is done with the experimental data, which shows good agreement between the simulation outcomes and the experimental ones. The correctness of the determination of the electric size of the object by the analysis of the scattered pulse echo serves as the verification of the approach. The outcomes reveal that less than a 3% deviation is observed between numerical and experimental analysis.
Sensorless field-oriented control inverter of BLDC motor for copter
Authors: Rau Dávid , Vršanský Tomáš 
Published: July 2023

Abstract
This paper focuses on optimizing the propulsion system, specifically the control aspect. It presents the design of a sensorless inverter with field-oriented control for BLDC motors, primarily intended for copters. The theoretical part covers motor modeling and the design of the control structure, employing field-oriented control and a sensorless approach using back-electromotive force observer to estimate the rotor position. The physical implementation of the control system is based on an electronic inverter with two logical components. The control component utilizes a microprocessor for FOC control and incorporates memory, sensor systems, and peripherals. The power component ensures controlled energy transfer through complementary signals and feedback measurement. Communication between components and with the higher-level system, regarding control and configuration, is also addressed. Finally, the inverter underwent testing on a measurement platform and during copter flights. The measurements focused on motor speed estimation and control performance under load and no-load conditions. The assessment concludes with trust scaling and temperature measurements of the inverter.
Analysis of porous silicon structures using FTIR and Raman spectroscopy
Authors: Králik Martin , Kopani Martin 
Published: July 2023

AbstractThis work deals with the production of porous silicon samples by electrochemical etching method and their analysis using FTIR and Raman spectroscopy. Porous silicon samples were prepared under various conditions, such as etching time and current density. A p-type silicon substrate was used to prepare the porous silicon structures. FTIR spectroscopy was performed to determine the chemical bonds formed during the etching process. The structural properties of the prepared samples were investigated by Raman spectroscopy.
New design and optimization of an in-wheel permanent magnet motor with tangentially magnetized magnets and unequal stator teeth
Authors: Zaaraoui Lassaad , Mansouri Ali 
Published: July 2023

AbstractPermanent magnet synchronous machines (PMSM) are competitive motors for in-wheel traction systems of electric vehicles. A new tangentially magnetized permanent magnets machine with outer rotor and unequal stator teeth for in-wheel motor application is proposed in this paper. The analytical calculations of the proposed topology are presented by determining the magnetic flux densities and the iron losses in all parts of the machine. The machine design is optimized using three state-of-the-art multiobjective algorithms which are AbYSS, MOCell and NMOPSO algorithms. Moreover, the optimization procedure is carried out according to three objectives: the maximization of the machine efficiency and the minimization of the mass and ripple torque. The optimization results showed that all the algorithms can find a set of optimal solutions and that the NMPSO algorithm outperforms the other two techniques. The finite element method (FEM) is used to investigate the optimization results. It is observed some magnetic saturation in the rotor yoke and the magnet’s extremes. The value of the induction in these machine regions is about 1.9 T. The comparison between the FEM and optimization results proved the rationality of the proposed optimization procedure.
Can a Vlogger Help to Build Brand Awareness? The Impact of Vloggers on Customers’ Attitude towards Brand Advertisement and Purchase Intention
Authors: Santiago Joanna Krywalski , Su Xiaolin 
Published: July 2023

Abstract

Objective
This study derives from the postulates of the theory of reasoned action (Fishbein & Ajzen, 1975) and the theory of planned behaviour (Ajzen, 1991) to explore the impact of vloggers on customers interested in beauty products. Particularly, this study examines whether the attitude toward vlogger’s recommendations impacts the attitude toward the brand advertisement, and what their influence on consumers’ purchase intention is.

Methodology
This study applies a cross-sectional mono method of quantitative analysis. The data collection was assisted with the use of survey by questionnaire built on Qualtrics and distributed in China. We use partial least squares structural equation modelling to analyse the data and test the proposed hypothesis.

Findings
Vloggers have a considerable impact on customer perceptions due to their proximity to customers who often portray vloggers as ‘friends’ and value their opinions. This study shows that it is not the perceived usefulness of shared information or vloggers trustworthiness that matter when forming the followers’ attitude towards vloggers, but more attention should be given to information quality and the perceived benefits of information derived from vlogs. The strongest relationship in this study showed to be the one between the attitude towards a vlogger and the attitude towards a brand, which emphasizes the importance that content creators can have in building brand awareness.

Value added
This article provides a clear picture on exploring the impact of vloggers on customer perceptions. The results of the research can be used to guide companies on how to use vloggers in their marketing campaigns.

Recommendations
Considering the growth of social media and the various forms of content available, the companies should know how to apply those new media in their marketing strategies. As the importance of traditional media seems to decline, mostly among younger generations, those new medias are growing, and their application brings new opportunities and challenges.
Exploring Diversity Management to Avoid Social Washing and Pinkwashing: Using Bibliometric Analysis to Shape Future Research Directions
Authors: Lanzalonga Federico , Chmet Federico , Petrolo Basilio , Brescia Valerio 
Published: July 2023

Abstract

Objectives
The Sustainable Development Goals (SDGs) have been a significant focus of environmental, social and governance sustainability research. Diversity management is one of the challenges faced by corporate governance in achieving SDG 4, 5, 8, and 10. However, rapid demographic changes in the global workforce create significant challenges for human resource development professionals when focusing on diversity management. This paper aims to define the different perspectives of diversity management to avoid sustainability distortions such as social washing and pinkwashing, which promote the perception that policies or products of a given company are socially responsible.

Methodology
The analysis of the existing literature can provide the information necessary to answer the research questions using rigorous scientific research methods. In the present study bibliometric analysis was used to enable a thorough and reliable analysis of knowledge on the topic and the identification of future progress. Bibliometric analysis was used to investigate the final pool of 126 peer-reviewed articles.

Findings
Contributions include advancing the understanding of diversity management, highlighting the dominance of communication bias, and strengthening the connection between social sustainability and the individual by identifying social exchange theory as a tool for explaining the ongoing changes in corporate governance.

Value added
The paper aims to answer research questions related to the journals relevant to the study of diversity management, the geographical structure of the research flow on diversity management, and the possible implications for future research on this topic.

Recommendations
In light of the clusters identified, it is recommended that forthcoming researchers explore the fitting theories that can be used to elucidate the phenomenon of diversity management. In addition, interdisciplinary research can facilitate a deeper understanding of issues concerning identity and gender, thereby enhancing the knowledge of diversity among managers. The paper recommends that future studies emphasize the differences in diversity management between national and multinational companies expanding the knowledge by conducting multiple case studies.
Danish Early Childhood Education and Care
Authors: Koch Anette Boye , rgensen Hanne Hede J 
Published: July 2023

Abstract
This special issue presents a selection of current research on Danish early childhood education and care (ECEC) aimed at an international audience. The Nordic tradition of child-centred, local and holistic pedagogy is dominant within the Danish educational culture, but the Danish pedagogical approach is the focus of an ongoing dialogue involving political preoccupations with ECEC quality and what is best for the children’s development and learning. Since 2004, Danish ECEC settings have been obliged to work on children’s learning based on a pedagogical curriculum organised around six previously established themes prepared at each local ECEC centre according to specific guidelines. In 2018, a more detailed description of the content of the curriculum and a common pedagogical foundation was introduced in a strengthened curriculum – partly because the previous curriculum led institutions too far away from the existing pedagogical culture. The strengthened curriculum points to key elements such as play, child-centredness, communities of children and a broad concept of learning – to constitute the understanding and approach to work on children’s well-being, learning, development and formation in ECEC. New research from Danish professionals is presented, revolving around key areas in the strengthened curriculum in order to invite further dialogue with international colleagues about children’s play, fun and well-being, quality cultures, children’s communities, transitions, aesthetics and vulnerability.
“But we´re talking about Jonas?!” Danish ECEC Between Quality Cultures
Authors: Togsverd Line 
Published: July 2023

Abstract
The aim of the article is to support critical consideration about what quality is and might be in ECEC. It argues that two different quality cultures – understandings of what quality is, how it may be understood and supported – intersect and create tensions in relation to the ECEC area in Denmark. One is analyzed as influenced by a transnational quality discourse, a specific regime of truth regarding quality as a phenomenon “out there” that must be defined and assessed to improve. This technical-instrumental quality culture needs to be balanced by a quality culture founded in pedagogy as a distinct perspective foundational for ECEC. Drawing on a continental tradition of pedagogy as a human science discipline the article offers a language and understanding of pedagogical qualities. Such qualities refer to the attributes of pedagogy and go beyond what is easily disregarded as subjective in the prevailing quality culture. To identify such pedagogic qualities the article revisits empirical data from a narrative research project that explored pedagogic knowledge at play in ECEC professionals’ practice. The article argues that a critical quality culture founded in thoughtful consideration and ethical balancing of pedagogical qualities is crucial for the sake of the children and our democratic society.
Self-organized communities of children
Authors: Bernstorff Benedicte 
Published: July 2023

Abstract
From a child-centered perspective, this article explores the practices of children’s self-organized play-communities in institutional everyday life in Danish early childhood education and care (ECEC) settings, based on a phenomenological non-participant-observational study with a duration of 16 months involving two kindergartens (Bernstorff, 2021). Drawing on Bourdieu’s reflexive sociology and praxeology, children’s self-organized play-communities are analyzed as a social space, being a field for relations, fights, negotiations with specific admission requirements emerging as accepted values shared by the specific field. The analysis demonstrates that self-organized play-communities are a social space with its own practices of being together expressed through the social language in play linked to and guided by an institutional choreography. Besides, the analysis demonstrates three kinds of different communities of children in self-organized play, viz. the categories: Relational play-communities, Community-oriented play-communities, and Conflictual play--communities, which categories may, however, also overlap into blended categories. The article argues that children’s self-organized play-communities risk being under pressure in the institutional choreography, which in turn affects children’s opportunities for having uninterrupted periods of time and space to self-organized play in their institutional everyday life.
Questioning continuity: On children’s transition from day-care to kindergarten class in Denmark
Authors: Odgaard Ane Bjerre 
Published: July 2023

Abstract
Transition to school is recurrently pointed out as key to children’s immediate well-being at school start, as well as to their long-term educational endeavors. Aspirations towards continuity during transition is a common denominator across research, policy, and practice, in Denmark as well as internationally. This theoretical-conceptual paper problematizes continuity as a fluent or empty signifier within the transition field. This implies that, within transition theory and practice, the question of how continuity may be institutionally organized, as well as professionally facilitated, is a complex issue. By highlighting how Danish transition practices instantiate an ambivalence between a Nordic, child-centered kindergarten legacy from Fröbel, and an Angloamerican approach to academic accomplishments, the question of continuity is theoretically problematized. This leads to a socio-culturally informed discussion of change as a constitutive factor in transition, and of continuity as a matter of children’s trajectories of experience, learning, and development across divergent institutional settings. The findings imply a fundamental questioning of ambitions towards smoothing out transitions as a means for ensuring continuity. This has the implication that, within the fundamentally ambivalent Danish early childhood educational landscape, change and transformation may be valorized, rather than merely problematized. In addition, continuity may be approached as a matter of children’s trajectories of sense-making across diverse institutional settings. This reconceptualization may also inspire international transition practices.
Aesthetic encounters and agency in ECEC: Materiality, intra-action, and sensitive entanglements
Authors: Blomgren Henriette 
Published: July 2023

Abstract
The aim of the article is to analyse aesthetic encounters in Danish early childhood and care (ECEC) centres and create knowledge of and a language for aesthetics as sensitive encounters and vibrant matters between humans and the world. The article thus challenges traditional assumptions about and understandings of aesthetics as simply impression, expression, and rather formal hands-on work (also referred to as ‘aesthetic learning processes’). The article links to fieldwork taking place in two Danish ECEC centres – a kindergarten (3–5-year-olds) and an age-integrated centre for kindergarten groups and nursery groups (0–2-year-olds). The fieldwork is framed as focused ethnography, and the methods used are written and visual field notes (video recording, photos) and interviews with artists who visited the ECEC centres and worked with the pedagogues. In the analysis process, the author revisits the empirical data and dwells on micro-moments that, in the article, are sampled into vignettes. With and through theoretical perspectives related to aesthetics as sensitive, vibrant, intra-active, and entangled encounters with materiality, new insights appear and lead to findings that highlight aesthetics as subtle and informal processes engaging materiality as a symmetric co-player alongside the artists and pedagogues and in support of children’s aesthetic agency.
Youth Religiosity: A Bibliometric Coverage and Quantitative Assesemnt of Internal and External Dimensions
Authors: Petcu Monica , Roman Monica 
Published: July 2023

Abstract
Due to its complex character, the evaluation of the way an individual is religious involves multidimensional approaches, which includes both aspects of creeds and effective manifestation. The exhaustive bibliometric analysis reveals eight main research themes of interest, at the interaction of religiosity and youth. In the context of assessing religiosity, the paper further provides an analysis of the religious phenomenon among Romanian adolescents and young adults. It employs an exploratory factor analysis for identifying the specific religiosity dimensions, and principal components analysis for reducing dimensionality and for a more in-depth analysis. Both adolescents and young adults exhibit a relatively strong level of internal religiosity, which pertains to personal beliefs and faith. Additionally, both groups demonstrate a moderate level of external religiosity, which refers to religious practices and behaviours.