bluuebunny/crossref_metadata_2025_split huggingface dataset:
Differences in External Load Variables Between Playing Positions in Elite Basketball Match-Play
Authors: Salazar Hugo , Castellano Julen , Svilar Luka 
Published: April 2021

Abstract
The purpose of this study was to describe the specific demands and structure of interrelationships of external load variables in order to generate a position-related time motion profile in elite basketball. Seventeen professional players from three different playing positions (6 guards, 4 forwards, and 7 centers) were analyzed in five friendly games. Player load per minute (PLmin) was used as an indicator of intensity to compare positions. Furthermore, high and total external variables of jumping (hJUMP and tJUMP), acceleration (hACC and tACC), deceleration (hDEC and tDEC) and change of direction (hCOD and tCOD), respectively, were used for the principal component analysis (PCA). The Kaiser criterion (eigenvalue > 1) was applied, and the Varimax rotation mode was used to extract multiple principal components. PCA showed that all positions had three or four principal components, but the configuration of each factor was different: tCOD, hCOD, hDEC and hJUMP for guards, hCOD, tCOD, tACC and hDEC for forwards, and tJUMP, hJUMP, hDEC and tACC for centers were specifically demanded in match-play. For guards and forwards, a significant correlation was found between COD variables, while for centers tCOD and PLmin had the strongest correlation. When monitoring the external load via tri-axial accelerometers in basketball match-play, each playing position showed specific physical demands. Therefore, these variables must be prioritized in load monitoring programs.
Computer supported research of Hungarian dialects in Slovakia
Authors: Presinszky Károly 
Published: April 2021

Abstract
Computer supported research of Hungarian dialects in Slovakia began in 2010 at the Institute of Hungarian Linguistics and Literary Science, Faculty of Central European Studies, Constantine the Philosopher University in Nitra. The research is carried out using dialectological software developed by two researchers (Domokos Vékás and Fruzsina Sára Vargha) from Eötvös Loránd University in Budapest, creating regional dialect databases, first for the Žitný ostrov/Csallóköz region and then for the whole Slovakia Hungarian dialect region. Before a detailed presentation of research results and possibilities in the field of digitized dialectological data, the study briefly describes the methods and Hungarian results of digital dialectology. Based on Hungarian research in Slovakia, it shows how it is possible to generate maps showing the geographical and social distribution of linguistic phenomena and acoustic phonetic analyses of data aligned with sound files. Important results of digital dialectology in Nitra are recently published audiobooks of Hungarian dialects in Slovakia, which can be used in addition to the needs of the researchers as a collection of multimedia dialect texts in school education and in the promotion of dialects.
Analysis of cognitive operation in understanding text of the fourth-grade pupils
Authors: Vančo Ildikó , Gergelyová Viktória 
Published: April 2021

Abstract
This study aims to analyse the informative-type text, questions, and answers of the fourth-grade reading comprehension test according to cognitive processes. A total of 353 respondents participated in the survey. The examined target group was the fourth-grade pupils of Hungarian-language primary schools in bilingual regions in Eastern, Central, and Western Slovakia. The results obtained show that most of the pupils had sufficient background knowledge to interpret the short and simple text, and the new information was well integrated into their existing schema structure. In terms of processes of comprehension, most pupils had no problem with recognizing and retrieving explicitly stated information in the text, neither with making straightforward inferences. However, there were problems in interpreting and integrating information and summarizing them. The results show that half of the pupils had problems with multi-level interpretation of the information obtained and about one-fifth of the pupils gave incorrect answers even to the questions that required the use of the simplest cognitive processes.
Advances in the diagnosis and treatment of achalasia of the cardia: A review
Authors: Zhang Baozhen , Wang Yidan , Liao Ye , Zhang Jingjing , Wu Yufan , Xiao Tingyue , Zhang Yue , Bao Yiwen , Qiu Hongyu , Sun Siyu , Guo Jintao 
Published: April 2021

Abstract
Idiopathic achalasia is an esophageal motor disorder characterized by the loss of the lower esophageal sphincter ganglion, resulting in impaired lower esophageal relaxation and absence of esophageal peristalsis. Patients commonly present with progressive dysphagia accompanied by reflux, heartburn, retrosternal pain, and severe weight loss. Diagnosis is primarily based on the patient’s chief complaints, barium esophagography, and the most recent high-resolution manometry. Endoscopic assessment and endoscopic ultrasonography also have significant value with regard to the exclusion of esophageal anatomical lesions, neoplastic diseases, and pseudoachalasia. However, as most patients with achalasia demonstrate a gradual onset, early diagnosis is difficult. Currently, treatment of idiopathic achalasia, including pneumatic dilation, stent placement, and surgical myotomy, is aimed at reducing lower esophageal sphincter pressure and relieving the symptoms of dysphagia. Peroral endoscopic myotomy has gradually become the mainstream treatment because it causes less trauma and has a rapid recovery rate. This article reviews the main methods of diagnosis and treatment of achalasia, with an emphasis on the potential of peroral endoscopic myotomy and the advancements of immunotherapy for achalasia.
The human imprint on the unique geological landscape of the Western Caucasus
Authors: Mikhailenko Anna V. , Ruban Dmitry A. , Zorina Svetlana O. , Nikashin Konstantin I. , Yashalova Natalia N. 
Published: April 2021

Abstract
Human intervention in the geological environment is commonly thought to pose a threat to geoheritage. However, new information from the Western Caucasus where unique geological features are concentrated in Mountainous Adygeya, implies that man-made features in fact add value to geoheritage. Such features include a lengthy artificial niche in the Guama Gorge, accumulations of large artificial clasts along the road leading to the Lagonaki Highland and the Khadzhokh Quarry with the artificial Red Lake. These contribute to the regional uniqueness of geosites and can be classified as geomorphological, sedimentary, economical and hydro(geo)logical geoheritage types. Interestingly, these artificial features have natural analogues in the study area. Such integrity of local geological landscapes urgently require special interpretations for guided excursions and explanatory panels for correct comprehension of the origin of these unique features on the part of unprepared tourists. Generally, the human imprint on geological landscapes of Mountainous Adygeya is significant and occasionally positive, which makes the entire geodiversity hotspot of special, international interest and an object for further investigations.
Does Economic Growth and Inflation Impact Consumer Confidence during a Pandemic? An Empirical Analysis in EU Countries
Authors: Bătrâncea Larissa 
Published: April 2021

Abstract
The study investigates the capacity of European Union member states to face the effects of the economic crisis caused by the COVID-19 pandemic. Namely, by means of a panel data analysis, the study reports on the impact of economic growth (proxied by gross domestic product) and inflation rates (proxied by harmonized indices of consumer prices) on the overall confidence indicator corresponding to 27 EU countries for the period fourth quarter 2019–third quarter 2020. Results showed that inflation had a negative influence on the confidence indicator during the pandemic crisis, while economic growth had no impact. The negative effect triggered by inflation uncovered the impact of monetary policies and fiscal policies on the staggering level of public debt. The study emphasizes that inflation plays a significant role in the market economy, reason for which governments should monitor this factor when trying to stimulate the economy and set appropriate policies for eliminating negative consequences of potential future recession periods.
Culture, Privacy, and Trust in E-commerce
Authors: Broeder Peter 
Published: April 2021

Abstract
The aim of the study is to investigate trust and privacy in a web store. Two hundred and thirty-seven persons (from the Netherlands and from Romania) participated in an experimental survey. They were presented with two variations of a wardrobe offer in a fictional web store. In one web store condition, the privacy notice was absent. In the other web store condition, the privacy notice was present. The findings show that including a privacy policy notice did not directly influence consumers’ purchase intention. Meanwhile, there was an indirect effect of the privacy policy notice, via trust, on purchase intention. In addition, there was supporting evidence that privacy concerns remain dormant until triggered by the privacy notice. Differences between men and women, as well as between different uncertainty avoidant cultures, were not found. In contrast, regarding age, young consumers (in particular, the Romanian ones) were less affected by the privacy notice than older consumers (for trust and purchase intentions). This study provides an original contribution to global e-commerce. Cultural groups are categorised through self-identification. In combination with differences in uncertainty avoidance, this categorisation provides better insight into the consumer dynamics in societies. The findings emphasise the need for fine-tuning web store atmospherics. An optimal and effective shopping environment can be trusted and guarantees privacy. This outcome implies that a privacy policy notice in a web store is perceived as a privacy guarantee, not as a privacy warning.
The Market Functioning of Polish Higher Education Institutions in the Context of the Implementation of the Concept of Social Responsibility
Authors: Pabian Angelika M. 
Published: April 2021

Abstract
The evolution in the sector set new tasks for Higher Education Institutions (HEIs)*, where — in addition to educational activity — their cooperation with other entities is assumed, which will make it possible to take up contemporary challenges. One of these is University Social Responsibility (USR)*, the popularity of which is growing; however, this area is not sufficiently recognized in the relevant literature. This fact was an important premise for undertaking research to assess the current state of the higher education sector in the context of the implementation of the concept of social responsibility. The purpose of the paper is to show students’ opinions on the implementation of USR by HEIs and their knowledge of SR. The author’s intention is to present the results of her own research. The material obtained in the course of the survey showed that the symptoms of the adaptation of the concept of Social Responsibility (SR)* to HEI management were identified, but the degree of their involvement in this area is insufficient, as is the level of students’ knowledge in the field of SR. The exploratory research referred to in this article is an introduction to a broader scope of research.
Limit cycles of discontinuous piecewise linear differential systems formed by centers or Hamiltonian without equilibria separated by irreducible cubics
Authors: Damene Loubna , Benterki Rebiha 
Published: April 2021

Abstract
The main goal of this paper is to provide the maximum number of crossing limit cycles of two different families of discontinuous piecewise linear differential systems. More precisely we prove that the systems formed by two regions, where, in one region we define a linear center and in the second region we define a Hamiltonian system without equilibria can exhibit three crossing limit cycles having two or four intersection points with the cubic of separation. After we prove that the systems formed by three regions, where, in two noadjacent regions we define a Hamiltonian system without equilibria, and in the third region we define a center, can exhibit six crossing limit cycles having four and two simultaneously intersection points with the cubic of separation.
Some fixed point theorems of rational type contraction in b-metric spaces
Authors: Seddik Merdaci , Taieb Hamaizia 
Published: April 2021

Abstract
In this paper, we prove some common fixed point theorems satisfying contractive type mapping in the setting of b-metric spaces. The presented theorem is an extension the results of M. Sarwar and M. U. Rahman [23] as well as a generalization of many well-known results in the literature through the context of b-metric spaces. Also, we present a few examples to illustrate the validity of the results obtained in the paper. Finally, results are applied to find the solution for an integral equation.
Structural-phase transformations in 0.34C–1CRr–1Ni–1Mo–Fe steel during plasma electrolytic hardening
Authors: Rakhadilov B.K. , Kozhanova R.S. , Popova N.A. , Nugumanova A.B. , Kassymov A.B. 
Published: April 2021

Abstract
Structural-phase transformations in 0.34C–1Cr–1Ni–1Mo–Fe steel during plasma electrolytic hardening were investigated. Electrolytic-plasma hardening of steel samples was carried out by surface quenching with rapid concentrated heating of the surface by plasma action and subsequent rapid cooling by heat removal from the depth of the sample by electrolyte jet. Plasma electrolytic hardening was carried out in the cathode mode in an electrolyte made from an aqueous solution containing 20 % sodium carbonate and 10 % carbamide. To study the structural-phase states of the modified layer, we used the method of transmission diffraction electron microscopy on thin foils. The study of steel samples was carried out before and after the plasma electrolytic hardening. Initially, the steel was a mixture of pearlite and ferrite grains. Surface hardening of 0.34C–1Cr– 1Ni–1Mo–Fe ferrite-pearlite steel led to a change in the structural-phase state and the formation of a packet-lamellar martensite structure. It was found that PEH leads to distortion of the crystal lattice and the formation of long-range internal stresses, as well as to the release of small particles of cementite and carbide of M23C6 type, uniformly distributed throughout the volume of the material. Surface hardening led to the increase in all quantitative parameters of the fine structure (ρ, ρ±, χ, σL, σd).
Thermo-magnetic stability of magnetic Fe3O4 nanoparticles for hyperthermia
Authors: Pan Y.M. , Zhang W. , Hu Z.F. , Feng Z.Y. , Zhang X.P. 
Published: April 2021

Abstract
Monodispersed Fe3O4 magnetic particles adsorbed by amylase (such as citric acid (CA), carboxymethyl chitosan (CMCH) and β-cyclodextrin (CD)) were prepared by means of co-precipitation method. The absorption character of the samples was investigated by FT-IR, TG and VSM. It was found that the carboxyl (COOH groups) of amylase reacted with the hydroxyl (OH groups) on the surface of Fe3O4 particles, resulting in the formation of iron carboxylate that was adsorbed onto Fe3O4. The induction heating properties of the magnetic Fe3O4 nanoparticles in an alternating current magnetic field were also investigated and the thermo-magnetic stability in induction heating was discussed.
Indirect Measurement of Shielding Effectiveness of an Enclosure for a Security Camera
Authors: Skočík Petr , Pospíšilík Martin , Křesálek Vojtěch , Adámek Milan 
Published: April 2021

Abstract
This paper presents the results of our experiment, which consisted in measurement of the shielding effectiveness of a camera enclosure that was designed and constructed in order to increase the susceptibility of a camera against external electromagnetic fields. All activities, from defining of requirements to final design and measurements, were performed in the Laboratory of Electromagnetic Compatibility at the Faculty of Applied Informatics of Tomas Bata University in Zlín. The hereby described approach allowed to utilize standardized laboratory equipment that is normally used for device susceptibility test to radiated electric field. The measurement was made inside a semi-anechoic room additionally damped by absorbers placed on its floor. When configuring the experiment, relevant EMC standards EN 55016 and EN 61000-4-3 were considered. Although the uncertainty tolerances, allowed by the relevant standards, were quite high for measurements in such rooms, the results obtained by the experiment matched the theoretical expectations quite satisfactorily.
Bodily Archiving in 69 Positions
Authors: Löfblad Josefine 
Published: April 2021

Abstract
Recently, an interest in archives and archiving has been noticeable amongst artists as well as scholars. This paper analyses Mette Ingvartsen’s 69 Positions (2014), a dance work in which the audience participates in a guided tour through Ingvartsen’s own “archive”. The aim is to look at how archival traces and archival practices “perform” in the work, with a specific focus on bodily archiving. As a theoretical framework, I draw mainly on André Lepecki’s (2016) conceptualization of “the body as archive”, whereby reenacting becomes a mode of inventive archiving that actualizes not-yet utilized potential in a work. In this analysis, I propose that Ingvartsen’s body and the bodies of the audience create a collective body-archive, which collectively actualizes (previously virtual) intimacy. In addition, I argue that blurring the distinctions between body and archive and between reenactment and archiving are ways of insisting that dance does not disappear but remains, counter to “archival logic” (Schneider 2011, 99), by being stored in bodies and transmitted between bodies and by repeatedly reappearing–always more or less altered–in or as performance.
Methane – Fuel Gas. Opportunities and Threats
Authors: Łukaszczyk Zygmunt 
Published: April 2021

Abstract
Since the beginning of the 1990s, there has been an intensive restructuring of hard coal sector in Poland. In this process, successive mines are being decommissioned, most of which are characterized by considerable methane content. The vast majority of hard coal mines in Poland, including all the mines belonging to Jastrzębska Spółka Węglowa S.A. are highly methane mines. This means that the air flowing out of the mine shafts contains a certain concentration of methane, the size of which depends on the amount of air and the amount of methane-filled air, which is emitted into the mine excavations. In 2019 alone, nearly 807 million m3 of methane was released from the rock mass affected by mining, out of which only 195.6 million m3 were used economically. This publication presents and characterizes projects involving the extraction and economic use of methane from both active and decommissioned mines. The paper also points out the legal and administrative conditions in which projects related to methane extraction and utilization can be implemented. The paper presents measurable benefits from demethylation not only in terms of improving the safety of coal extraction, but mainly economic and ecological aspects. Above all, attention was paid to the fact that the vast majority of methane was irreversibly emitted to the atmosphere to the detriment of the natural environment.
The perception of pain associated with thyroid fine needle aspiration before and after the procedure
Authors: Tibor Mezei , Tímea Vargyasi , Melinda Kolcsár 
Published: April 2021

Abstract
The idea of fine needle aspiration cytology (FNAC), which is considered the gold standard in the evaluation of thyroid nodules, occasionally elicits fear on the part of patients that often results in delays to the procedure. Our aim was to analyze the difference between the intensity of pain imagined or expected, before and the real pain experienced during the procedure, and also some of the factors influencing it.
Materials and methods. Questionnaires were used, answered by 103 patients. Sampling was performed without local anesthesia using 25G diameter needles. The first page of the questionnaire was completed before and the second page after the intervention. A numerical pain scale was used to indicate the expected (pre-procedure) and perceived (post-procedure) intensity of pain.
Results. The mean age of the patients was 54 years, and 76% had not yet undergone such procedure. In all patients, the intensity of pain experienced during the intervention itself was less than what patients expected (p <0.0001). First-time goers expected greater pain compared to those who had already underwent such a procedure (p = 0.0163). For those who had already underwent such a procedure, there was no difference between the intensity of expected pain and the intensity of experienced pain (p = 0.6307). The pain perception decreased with age, both before (r2 = 0.01925) and during the procedure (r2 = 0.03045). Patients who graduated only primary school were more afraid of the pain (58%) as opposed to graduates of secondary and higher education (23–24%), members of the latter group were rather preoccupied with the outcome of the cytological report.
Discussions, conclusions. We studied the intensity of expected and experienced pain associated with thyroid aspiration cytology, and some of the factors that may influence this. The level of expected pain appears to be influenced by patient awareness, as those who underwent for the first time a thyroid aspiration, expected significantly more pain than they actually experienced. In conclusion, the general characteristics of patients who experienced greater pain after the procedure were those with low levels of awareness or complete absence thereof, younger age and lower levels of education. We believe that proper patient education significantly reduces the procrastination of the procedure of thyroid FNAC and alleviates patients ’anxiety, thereby aiding them to receive prompt and appropriate care.
Investigation of the phytochemical and antimicrobial activity of Primula veris L. extracts
Authors: Erzsébet Varga , Dorottya Lieb , Anna Maráz 
Published: April 2021

Abstract
Methanol, ethanol (50%) and aqueous extracts were prepared from the roots, leaves and flowers of Primula veris collected and dried under natural conditions in meadows near Marosludas in April 2018. The polyphenol contents of the plant parts, as well as the antioxidant capacity were measured by ABTS spectrophotometric methods. For the microbiology section, aqueous and ethanolic extracts (100 mg/ml) were prepared from the roots, leaves and flowers of Primula veris followed by testing of their antimicrobial activity against human pathogenic yeasts (Candida albicans, Candida parapsilosis, Candida glabrata) and bacteria (Gram negatives:, Escherichia coli, Acinetobacter sp., Pseudomonas aeruginosa, Enterobacter cloacae; Gram-positive: Enterococcus faecalis, Listeria monocytogenes, Staphylococcus aureus) by agar well diffusion method.
Ethanol proved to be the most effective solvent for all three drugs to determine the polyphenol content. The flower drug contains the highest amounts of polyphenols. With the ABTS method of antioxidant measurement, ethanolic extracts are more effective than aqueous extracts.
Agar well diffusion studies showed that all extracts caused complete inhibition within the inhibition zone in the yeasts tested. The inhibitory effect of aqueous extracts was stronger than that of ethanolic extracts in the case of all three plant parts. The greatest inhibition was caused by extracts of the roots with ethanol. The three yeasts tested showed similarly high sensitivity to roots extracts, while the inhibitory effect was weaker for leaf extracts. Candida parapsilosis was resistant to leaf and flower extracts. Pseudomonas aeruginosa, Enterococcus faecalis and Staphylococcus aureus, like fungi, showed good sensitivity to extracts, while other bacteria showed little or no inhibitory effect.