bluuebunny/crossref_metadata_2025_split huggingface dataset:
Existence and optimal control of Hilfer fractional evolution equations
Authors: Zhou Mian , Zhou Yong , He Jia Wei , Liang Yong 
Published: January 2025

Abstract
This article investigates the existence and optimal controls for a class of Hilfer fractional evolution equations of order in

(

0
,
1

)

\left(0,1)

with type of [

0
,
1

0,1

]. The first part focuses on analyzing the existence and uniqueness of the mild solution using the fixed point theorem and semigroup theory. In the second part, an optimal control problem that admits an optimal pair is considered. Furthermore, the necessary optimality conditions for an optimal control problem governed by semilinear fractional diffusion equations are presented.
Assessing the Outcomes of Digital Soil Science Curricula for Agricultural Undergraduates in the Global South
Authors: Rico Heidy , de la Puente Mario , de Oro Carlos , Navarro Daniela , Lambis Juan , Londoño Guillermo 
Published: January 2025

Abstract
This academic inquiry examines the efficacy of virtual reality (VR)-based pedagogy for higher learning, specifically analyzing immersive digital instruction for rural agriculture undergraduates studying soil science in Colombia. The investigation tests two hypotheses: first, simulated learning situations improve academic achievement and student investment compared to conventional in-person lectures; and second, modern modalities cultivate affirmative perspectives of the material. Employing a meticulous investigative blueprint across three Colombian university campuses situated in pastoral communities, the assessment involved 89 volunteers separated into experimental and control groups over 14 weeks analyzing soil nutrient administration. Scholastic aptitude, student absorption, and viewpoint appraisals were conducted before and after the module. Statistical calculations including independent sample examinations, variance examinations, effect magnitude, and association analyses were utilized to validate the hypotheses. The results endorse both hypotheses, evidencing augmented academic performance, student engagement, and affirmative attitudes toward soil science among participants experiencing VR-based coursework. This inspection lends valuable discernment into advanced technology’s potential to address rural student challenges, elevating educational outcomes and furthering constructive pedagogical encounters in the developing world.
Teaching Work and Inequality in Argentina: Heterogeneity and Dynamism in Educational Research
Authors: Vassiliades Alejandro 
Published: January 2025

Abstract
The issue of the multiple links between teachers’ work, schooling processes, and social inequalities has been one of the greatest concerns in the field of educational research in Argentina in recent decades. The way in which the task of teaching and the problem of inequality are related and configured has integrated the agendas of the different traditions and areas of knowledge with which the field of pedagogy has established articulations. This article aims to carry out a critical and systematic analysis of scientific production on the links between teaching work, schooling, and inequality in the period 1985–2024. That approach identifies the main conceptual and theoretical–methodological debates, reconstructing three cores of meaning: the way inequality has been signified, the forms of interpreting the multiple links between schooling and teaching in contexts of impoverishment, and the relationships between educational institutions and the environment that surrounds them.
RAFT-mediated polymerization-induced self-assembly of poly(ionic liquid) block copolymers in a green solvent
Authors: Yang Yongqi , Ren Zekai , Li Xiawei , Zhao Enhao , Luo Xin , Yan Youjun , Gao Hongyan , Feng Lijuan 
Published: January 2025

Abstract
Here, we report a novel method for regulating the morphology of block copolymer assemblies through the use of reversible addition–fragmentation chain transfer dispersion polymerization in ethanol. In this method, poly(N,N-dimethylacrylamide) is used as a macromolecular chain transfer agent, and the side chain length of the ionic liquid monomer is modified. A notable change in the morphology of the alkyl-imidazole monomer (1-alkyl-3-(4-vinylbenzyl) imidazolium tetrafluoroborate) was observed when the side chain length was modified from methyl to butyl. This phenomenon can be attributed to a structural change in the alkyl imidazole monomers, which resulted in enhanced solvent-phobic properties. The polymerization kinetics and glass transition temperatures of the block polymers were investigated. These results demonstrated that the polymerization rate increased with increasing number of side chains, whereas the glass transition temperature of the block polymers decreased. It provides a novel approach for the synthesis and utilization of poly(ionic liquid) block polymers with higher-order morphologies.
On the kernel of actions on asymptotic cones
Authors: Baik Hyungryul , Jang Wonyong 
Published: January 2025

Abstract
Any finitely generated group 𝐺 acts on its asymptotic cones in natural ways.
The purpose of this paper is to calculate the kernel of such actions.
First, we show that, when 𝐺 is acylindrically hyperbolic, the kernel of the natural action on every asymptotic cone coincides with the unique maximal finite normal subgroup

K
⁢

(
G
)

K(G)

of 𝐺.
Secondly, we use this equivalence to interpret the kernel of the actions on asymptotic cones as the kernel of the actions on many spaces at “infinity”.
For instance, if

G
↷
M

G\curvearrowright M

is a non-elementary convergence group, then we show that the kernel of actions on the limit set

L
⁢

(
G
)

L(G)

coincides with the kernel of the action on asymptotic cones.
Similar results can also be established for the non-trivial Floyd boundary and the

CAT
⁡

(
0
)

\operatorname{CAT}(0)

groups with the visual boundary, contracting boundary, and sublinearly Morse boundary.
Additionally, the results are extended to another action on asymptotic cones, called Paulin’s construction.
In the last section, we calculate the kernel on asymptotic cones for various groups, and as an application, we show that the cardinality of the kernel can determine whether the group admits a non-elementary action under some mild assumptions.
Yeah, but how? Operationalizing the functions of the discourse-pragmatic marker yeah
Authors: Gibb-Reid Ben , Diskin-Holdaway Chloé 
Published: January 2025

Abstract
Discourse-pragmatic markers (DPMs) such as yeah are known for their multifunctionality, leading to challenges in coding for function in quantitative analyses. We provide an account of the incremental creation of a functional taxonomy for the DPM yeah using a decision tree and multilevel inter-rater reliability testing. Author 1 and rater 1 initially achieved a low agreement rate of 51 %, but upon consultation and adaptation of the taxonomy, came to an agreement of 95 %. Rater 2 used the revised taxonomy and achieved an agreement rate of 81 % (for primary [P] functions) and 91 % (for P and secondary [S] functions). Rater 3 achieved an agreement rate of 56 % (P) and 67 % (P + S) with author 1 + rater 1, but a higher agreement rate with rater 2 of 74 % (P) and 83 % (P + S). We draw on top-down and bottom-up, data-driven approaches, and discuss the future of DPM operationalization.
Friction and wear behavior of alkali-treated corn husk fiber reinforced polyester composites
Authors: Balasubramaniam Stalin , Ramalingam Ramkumar , Rasu Karthick 
Published: January 2025

Abstract
This paper presents the friction and wear behavior of alkali-treated corn husk fiber reinforced polyester composites. In this research, prepared the alkali treated corn husk fiber reinforced polyester composite through hand layup technique and investigated the physical, mechanical, and wear behavior of the composites. Prepared composite exhibited good hardness, impact, and tensile strength of 65.87, 9.25 J, and 48.52 MPa, respectively. Then, studied the friction and wear behavior by changing the applied load (30, 40, 50 N), sliding distance (500, 750, 1,000 m), and sliding velocity (2, 3, 4 m/s) using L9 Taguchi technique in pin-on-disk apparatus as per ASTM G-99. From the results, it is observed that, applied load has influenced more on wear and friction followed by sliding velocity and sliding distance. Increases in applied load and sliding distance led to increase the wear and friction. A decrease in sliding velocity led to a reduction in friction and wear. Further, analyzed the wear and friction using contour plot. Wear mechanism has been studied through SEM analysis.
Sensual Environmental Robots: Entanglements of Speculative Realist Ideas with Design Theory and Practice
Authors: Santer Steven C. 
Published: January 2025

Abstract
In response to this issue’s theme of Can robots be sensual? two propositions are discussed from a design researcher’s perspective. Four devices across two speculative projects Habitat Robots and Soil Protector Robots are presented. Speculative Realist ideas provide reasoning for design approaches to metaphorise sensed environmental data into multi-sensorial performances that the devices embody. Facilitated through the projects are philosophy of design concerns, such as asymmetrical relations, the nature of data, and language about the devices prefiguring sensorial expectations. The performative behaviours of these multi-sensorial robots evoke a sense of things by removing the truthiness of data and thereby emancipating language from privilege and expertise, subverting expectations of technology, and notions of urban Nature. Through Harman’s Quadruple Object, we speculate on asymmetricality within object relations, including between the devices and the practices of design itself. Thereby, allowing ontological design implications to be reviewed – where acts of designing in turn design us; design processes are not only entwined prefiguratively, but are companion output artefacts of these technological ecology interfaces. The devices bring together and physicalise questions of contextual boundaries and politics between humans, technology, and Nature.
Anti-Müllerian hormone levels in relation to ovarian structures, season and age in Lipizzaner broodmares
Authors: Angyal Eszter , Vincze Boglárka , Somoskői Bence , Sós-Koroknai Viktória , Balogh Péter , Dankó Gabriella Novotniné , Cseh Sándor , Kútvölgyi Gabriella 
Published: January 2025

AbstractThe anti-Müllerian hormone (AMH) is a granulosa cell-derived hormone that has been associated with female fertility and reflects the population of growing follicles. This study aimed to evaluate the average concentration of AMH in Lipizzaner mares, as well as to determine the relationship between AMH concentration and follicle number and size. We also investigated the relationship between the age of mares and their AMH levels. The possible effect of seasonality of AMH levels was also assessed. Twenty-three mares between 6 and 24 years of age were included in the experiment. Mares were divided into two groups: Group 1 included mares aged 6 – 15 years (n = 11), while Group 2 included individuals older than 15 years of age (n = 12). Venous blood was collected and ovarian activity was monitored parallelly by transrectal ultrasonography. Serum AMH concentrations varied widely between the two different groups. AMH concentrations were significantly lower in old mares than in younger animals. A positive relationship was detected between AMH concentration and the number of medium-sized follicles (P = 0.022), large follicles (P = 0.016) and the total follicle count (P = 0.026). No seasonal effect was detected.
Experiential dimension of psilocybin-assisted therapy training: Necessity or hindrance to wider accessibility?
Authors: Plourde Louis , Chang Sue-Ling , Farzin Houman , Stephan Jean-François , Fallu Jean-Sébastien , Dorval Michel 
Published: January 2025

AbstractThe discussion surrounding the necessity of acquiring personal experience of non-ordinary states of consciousness in the course of psilocybin-assisted therapy training is crucial, as it can affect treatment safety, effectiveness and accessibility. As such, the ethical and practical issues associated with such a training standard require timely consideration in jurisdictions where this intervention is endorsed and integrated into healthcare. We believe the most balanced and ethical approach is to make psilocybin legally available for professional training without making it a requirement.
Analysis of the environmental impact of phosphate mining on the example of Djebel Onk deposit (Tebessa), Algeria
Authors: Yahiaoui Younes , Nettour Djamel , Chaib Rachid , Gherbi Cherif 
Published: January 2025

The object of the study is natural phosphates, which play a major role in various industrial sectors, ranging from agriculture to pharmaceuticals, via the metallurgy and chemistry. In Algeria, their importance in the international market is significant, thanks to the deposits of Djebel Onk, located in the south-eastern part of the region of Tebessa. However, the mining and processing of these phosphates lead to waste significant, both in liquid form than in solid, raising significant environmental concerns. In this perspective, a thorough analysis is necessary for a rational and hard reliable, ensuring the preservation of the environment. This research was undertaken to quantify and analyze the distribution of various heavy metals in the phosphate waste generated by Djebel Onk plant (Kef Essennoun deposit). These wastes are crucial to achieve the objectives of sustainable development in relation to public health and the environment. The work focuses on the study of samples of the different releases of the treatment processes. These latter were subjected to a characterization of different analysis techniques, qualitative and quantitative, namely: XRD, IR, XRF, SEM and AAS. The results obtained distinguish differences are notable between the levels recorded by the raw phosphate and those samples wastes of treatment processes. Thus, the waste produced consists of 59.2 % dolomite, 20.5 % calcite, and 19.8 % fluorapatite. The presence of kaolinite was also noted in these residues, though in a small proportion (0.5 %). It has also been noted that these concentration of the elements in trace metal increases relatively with the decrease of the diameter of the grain size, in particular in the mud. This shows that the efficiency of the modes of treatment will allow for some cases, reduce the concentration of elements in the phosphate studied. This opens up promising research opportunities for scientists and engineers to develop more efficient and advanced treatment methods.
Assessment of the global artificial intelligence market in healthcare
Authors: Malyshev Victor , Lipskyi Yurii , Kovalenko Viktoriia , Gab Angelina , Shakhnin Dmytro , Orel Olha 
Published: January 2025

Recently, there has been a significant increase in the use of artificial intelligence in healthcare, an increased trust of healthcare providers in artificial intelligence, and the interest of investors in the development of healthcare solutions based on artificial intelligence. The vast majority of providers of medical services and technologies, as well as of biomedical companies, are using artificial intelligence which confirms the great demand in the field of health care. The increased adoption of artificial intelligence techniques in medical applications has led to the focus of key market participants on new products and technical connections to expand commercial production.
The object of research is the world market of artificial intelligence in healthcare. Factors influencing the market positively and negatively have been identified. The general characteristics are given, as well as key points of the state and development of the market. The market is segmented by geographic regions, applications, therapeutic area support, market components, technologies, and usage. According to the segmentation of the world artificial intelligence market in health care by geographical regions, the largest market share belonged to the segment of the North American region (45 %); by application – to clinical trials segment (22.7 %); by the support of therapeutic areas – to radiology segment (75 %); by artificial intelligence components – to software segment (41 %); by technologies – to machine learning segment (33.1 %); by use – to medical imaging and diagnostics segment (27.1 %).
The main strategic trends and directions of further development of the market of artificial intelligence in health care are provided. The dynamics of the market in terms of growth factors, market opportunities, limitations, and challenges are considered. Important factors inhibiting the development of the artificial intelligence market in the field of health care are the lack of qualified specialists and ineffective cooperation between the public and private sectors.
Data on competitive tech giants and artificial intelligence healthcare powerhouses are provided.
Implementation of block artificial cooling units for gas preparation
Authors: Rubel Victoriia , Maslenko Maksym 
Published: January 2025

The object of research is the process of implementation and use of block artificial cooling units in the technology of natural gas preparation.
The research has confirmed the high efficiency of using artificial cooling units. Due to deep gas cooling, it is possible to achieve a significant increase in condensate production and improve gas quality. In addition, modern units are characterized by high energy efficiency and compactness.
A comprehensive analysis of existing gas preparation technologies and a comparative assessment using block artificial cooling units revealed a number of significant advantages of the proposed system, namely:
– block units provide deeper removal of heavy hydrocarbons, water and other impurities, which improves the quality of the final product;
– due to lower gas temperature, more intensive condensation of heavy hydrocarbons is achieved, which leads to additional extraction of valuable components;
– modern block units are equipped with energy-efficient equipment, which reduces energy costs;
– the units have a modular design, which facilitates their transportation, unit and maintenance;
– the use of block units allows to reduce emissions of harmful substances into the atmosphere;
– the ability to adapt to different operating conditions and product quality requirements.
The study found that existing natural gas preparation technologies have a number of disadvantages, such as:
– low efficiency of gas purification;
– high energy consumption;
– complexity of maintenance;
– large dimensions of the equipment.
Despite some drawbacks, the introduction of block artificial cooling units is a promising direction for the development of the gas industry. The results of the study indicate the high efficiency of this technology and its economic feasibility in the long term.
Development of an algorithm for assessing the fair value of non-current assets for higher education institutions
Authors: Bezhenar Alyona 
Published: January 2025

The object of research is the algorithm for assessing the fair value of non-current assets for higher education institutions.
The research problem, which is solved in the course of the work, is the lack of a clear algorithm for assessing the fair value of non-current assets of higher education institutions. There is also no methodological support for assessing the fair value of non-current assets taking into account the industry specifics of higher education institutions.
The work has developed an algorithm for assessing the fair value of non-current assets of higher education institutions, which includes two directions: assessing the fair value of non-current assets independently for higher education institutions; assessment with the help of an assessment entity. The algorithm for assessing the fair value of non-current assets independently by higher education institutions is identified as the main direction, which involves the implementation of the following actions:
– creation of an assessment commission;
– approval of the head’s order for the assessment;
– the presence of an active market;
– the possibility of identifying the object;
– the presence of methodological support for calculating fair value.
The methods of assessing the fair value of non-current assets were investigated, among which: market, cost and income. The market method of assessing the fair value of non-current assets, which is the easiest to apply, was determined as the recommended one for higher education institutions. Its advantages and disadvantages were summarized, among the advantages the market factor of supply and demand for similar objects was highlighted. The structure of the Methodological Provisions for assessing the fair value of non-current assets (NA) was developed according to the following points:
– general provisions;
– criteria for allocating groups of NA subject to assessment;
– criteria for identifying NA;
– the presence of active market conditions;
– methods of assessing fair value;
– requirements for drawing up an Act on the valuation of non-current assets.
Research of methanol content in technological flows of facilities that process gas preparation by low-temperature separation method
Authors: Dmytrenko Viktoriia , Podoliak Taras 
Published: January 2025

The object of research is methanol as an inhibitor, which is used in the process of collecting and preparing products from gas, gas condensate, and oil fields to protect against hydrate formations. It is important to ensure the rational consumption of this inhibitor, taking into account its solubility in gas, water, and liquid hydrocarbons. This work is aimed at analyzing the use of the methanol hydrate formation inhibitor in the process of low-temperature gas preparation and determining ways to use it more effectively.
The work presents the results of modeling the distribution of the hydrate formation inhibitor along the technological flows of low-temperature gas separation units according to the following schemes:
– low-temperature separation with gas cooling due to the Joule-Thompson effect;
– compression of gas from wells using PCS (pressure compressor station) + low-temperature separation with gas cooling due to the Joule-Thompson effect;
– compression of gas from wells using PCS + low-temperature separation with gas cooling due to the operation of a turboexpander unit;
– compression of gas from wells using PCS + low-temperature separation with gas cooling due to the operation of an artificial refrigeration unit (propane refrigeration unit).
The use of a computer simulator allowed to track in detail the distribution of methanol during the gas preparation process. The iteration method determined the minimum values of methanol consumption at which the hydrate-free operation mode of the equipment is maintained. Based on the modeling results, an analysis of methanol content in technological flows was performed. And the patterns of inhibitor separation in the separation equipment were also determined, namely, the dependence of methanol distribution on gas pressure in separators, and the methanol content in the output lines of gas preparation units.
It was established that the results of the study can be applied in the development of technologies for the collection, regeneration and reuse of methanol in technological processes of low-temperature gas preparation. The practical value of the results lies in the possibility of improving typical methods of protecting equipment from hydrate formations by developing an automated inhibitor supply system that, by monitoring the parameters of the technological process, changes the inhibitor dosage and ensures its economical use.