bluuebunny/crossref_metadata_2025 huggingface dataset:
Performance enhancement and emissions reduction in a diesel engine using oleander and croton biodiesel doped with graphene nanoparticles
Authors: Wambui Treza , Hawi Meshack , Njoka Francis , Kamau Joseph
Published: June 2023

Biodiesel is considered a suitable substitute for petroleum diesel because it is renewable, environment-friendly, and has a low carbon footprint. However, its high density, high viscosity and low heating value prevents it from replacing petroleum diesel completely. This study investigates the performance and emission characteristics of a compression ignition engine operating on oleander and croton biodiesel doped with graphene nanoparticles. Five fuel samples are used, including diesel (D100), diesel - 80% blended with oleander and croton biodiesel - 20% (OCB20) and OCB20 dosed with graphene nanoparticles at mass fractions of 50 ppm (mg/L), 75 ppm (mg/L) and 100 ppm (mg/L), respectively. The chemical composition of biodiesel and graphene nanoparticles is analyzed using Fourier Transform Infrared (FTIR) spectroscopy while the morphology of the nanoparticles is analyzed using Scanning Electron Microscope (SEM). Engine tests reveal a significant improvement in brake thermal efficiency, especially at 75 ppm concentration which is 2.76%  and 18.93% higher than diesel and OCB20, respectively, and a reduction in brake specific fuel consumption by 2.44% and 16.67% compared to diesel and OCB20, respectively. Carbon monoxide (CO) and unburnt hydrocarbon emissions (UHC) decreases for the 50 ppm sample, recording 8.58% and 21.65% reduction in CO and 52.2% and 50% in UHC compared to the diesel and OCB20, respectively. However, Oxides of Nitrogen (NOx) emissions increase. The results indicate that graphene nanoparticle-enhanced biodiesel can adequately substitute petroleum diesel, albeit with NOx reduction techniques.
Pizpireto Café: Sustainable Entrepreneurship in Times of Crisis
Authors: Ayala Ricardo Ortiz , Gómez Graciela Lara , Maldonado Jesús Hurtado , Nencheva Violena Hubenova
Published: June 2023

As a result of the economic setback caused by the COVID 19 crisis, many families lost their source of income and were forced to look for alternative forms of income. Thus "PIZPIRETO" Café was born, an example of entrepreneurship in times of crisis, a project that integrates sustainability, one of the life values of its creators. The present paper analyzes the way in which the company shaped and managed sustainability within their business until it became a fundamental pillar to boost the production and commercialization of their coffee, getting involved and being commited with the community of small coffee growers in the state of Veracruz.
Application of the Importance Performance Analysis Method and Customer Satisfaction Index Methods to the Quality of Distance Learning Services for Students during the Covid 19 Pandemic
Authors: Sembiring Carolina F , Anggraini Nenny , Manulang Ricky Martin
Published: June 2023

This study discusses the analysis of satisfaction levels on distanced learning or PJJ of the student at Universitas Kristen Indonesia during the Covid-19 pandemic. The problem investigated are whether the expectation of UKI students meet service and its level of satisfaction. The research was carried out in the even semester of 2020/2021. The research method used is quantitative method with a survey approach through questionnaire distribution. Furthermore, the data were analyzed by the Importance Performance Analysis method (IPA) and Customer Satisfaction Index (CSI). IPA Matrix described the most meaningful attributes of students in the PJJ process, which is mapped in 4 quadrants of all variables that have impacts on quality PJJ services, and CSI are used to determine the overall student satisfaction level with the approach which considers the importance of the attributes measured during the Covid-19 pandemic. Based on the results of the analysis using IPA, it was known that the attributes which is the main priority in quadrant A are speed of access to the PJJ learning platform, fair assessment by the lecturer, the consistency in giving lectures well, reliability in managing class, use the PJJ platform, pay attention to the student, and understand the student’s difficulties during PJJ. For quadrant B, attributes that need to be maintained are the use of interactive tools for PJJ, easy access and connection of the PJJ platform, lecturers teaching in accordance to their field, lecturers answer student’s questions, lecturers master the material being taught, lecturers updating learning materials following the current conditions, encourages and motivates students to do the best learning in the PJJ process. Attribute on quadrant C, the low priority attribute are lecturers are able to adapt from conventional learning to PJJ, lecturers respond quickly and efficiently handle student needs and complaints, how lecturers answering student’s questions and comments, lecturers use variative learning platforms, lecturers put the long-term interest in their students to stay focus in PJJ. For quadrant D, an overrated attribute is the proactivity of lecturers in providing the information about PJJ to students. For CSI the attributes, the amount of learning carried out by UKI lecturers is 72.61%. It is still in the CSI range (between 0.66 - 0.80) which means that UKI students feel satisfied with the PJJ which was carried out during the Covid-19 pandemic.
Issues and Trends in Contemporary Education
Authors: Tome Jose Manuel Salum
Published: June 2023

Innovation management; as well as organizations in general, public and private, deserve a continuous analysis and follow-up of the variables of the external context that impact them. In this sense, it should be noted that educational agents are the ones who do the innovation and hence their management and direction play a key role. Education professionals, more than ever, need to know how to come to understand and comprehend the complexity of what external variables mean and their impact on educational work. Next, a model and method for its follow-up is presented. It is an invitation to know and to take possession as agents of change in the practice of creativity and innovation, without neglecting at any time, the impact of the external context of the school, as it occurs in the Dual Modality (school-company relationship). The school as a quality school organization and educational innovation represent two areas called to be properly related, carefully analyzed, strategically planned and encouraged for their joint development. The relationship between the school as a quality school organization and educational innovation has to be seen and justified both at the level of theoretical argumentation and in the functioning and institutional life of schools as educational spaces both in it and in the company when applying Dual mode. It has to be projected, in time, in the articulation of the educational policy of a country and in the school practices that occur in the classrooms. I believe that in our country this double task is yet to be accomplished. So far, we have not managed to develop a solid tradition of pedagogical thought that has adequately explored the mutual implications between school quality and innovation as an educational process.
Leadership Coaching and the Myth of the Rational Client
Authors: Forbes Raymond L.
Published: June 2023

This paper will address the issue of whether or not the clients of leadership coaches think and act in completely rational ways. It explores the question using a lens derived from the fields of Behavioral Economics and the Brain Sciences. Beginning with a look at the origins of the idea of rationality, this work proceeds to consider what’s really at issue, why it matters, and the possible trap posed by assuming strong client rationality.  The paper concludes by posing options for resolution of the rationality myth by exploring the concepts of heuristics, bias, anchoring and priming. The paper concludes with suggestions for what leadership coaches can actually do to improve their work with clients and a short summary of the main ideas.
Social Media and Its Role in The Education Process of the University Students
Authors: Al-Ali Fawzia
Published: June 2023

This study seeks getting acquainted with media students’ opinions on the social media as an educational method, its merits, and demerits as well as the most apparent elements, which can be used within an educational curriculum on social media. Moreover, results of the study clarified that the most students’ attitudes towards social medias an educational method were negative; especially in terms of saying that teaching curricula on social media needs capabilities, which are unavailable in our universities, and their insufficient qualified professors in our universities to teach curricula on social media. This study is one of the descriptive studies, which aim at collecting data on the use of media students - the sample of the study - for social networking sites, their attitudes towards their use as an educational tool, as well as studying some variables related to employment such as gender, social status, this study is based on the survey methodology as a systematic scientific effort used to obtain information or descriptions of the phenomenon- subject of study. This study responds to the modern global concerns in the field of media, which seeks to benefit from the social media in teaching the subjects of media as being considered a media and communicational method in the first place as well as being an educational method in which the main constituents and elements of the modern educational methods are available.This study seeks to know the media students' perspectives towards the social media as an educational method; their advantages, disadvantages and the most significant elements that can be employed within a curriculum on the social media. The researcher has chosen the Social Networking Sites as a model, as they include within their applications all the technical services that are provided by the Web today; such as the written text, multi-media, hypothetical communities and the methods of research and communication., which led to what is known as the educational communities on the Web, which historicize a new stage of human knowledge, known as (the Sustainable Communal Knowledge), which enables learners to employ the digital techniques that enable them to benefit one another through participating in building both the theoretical and applicable knowledge. Importance of Study: (1) Considered from the first Arabic studies, which attempt to know the possibility of employing the social media as an educational method. (2) Considered from the first Arabic studies, which attempt to deal with the social media as an educational and media method at the same time. (3) Seeking to clarify the educational and media constituents of the social media. (4) Seeking to know the perspectives of one of the important parties relevant to the employment of social media, which are the young people and the university students on the one hand and the media learners on the other hand.
The transport function of the human lymphatic system—A systematic review
Authors: Thorup Lene , Hjortdal Anders , Boedtkjer Donna B. , Thomsen Morten B. , Hjortdal Vibeke
Published: June 2023

Physiological properties and function of the lymphatic system is still somewhat of a mystery. We report the current knowledge about human lymphatic vessel contractility and capability of adaptation. A literature search in PubMed identified studies published January 2000–September 2022. Inclusion criteria were studies investigating parameters related to contraction frequency, fluid velocity, and lymphatic pressure in vivo and ex vivo in human lymphatic vessels. The search returned 2885 papers of which 28 met the inclusion criteria. In vivo vessels revealed baseline contraction frequencies between 0.2 ± 0.2 and 1.8 ± 0.1 min1, velocities between 0.008 ± 0.002 and 2.3 ± 0.3 cm/s, and pressures between 4.5 (range 0.5–9.2) and 60.3 ± 2.8 mm Hg. Gravitational forces, hyperthermia, and treatment with nifedipine caused increases in contraction frequency. Ex vivo lymphatic vessels displayed contraction frequencies between 1.2 ± 0.1 and 5.5 ± 1.2 min−1. Exposure to agents affecting cation and anion channels, adrenoceptors, HCN channels, and changes in diameter‐tension properties all resulted in changes in functional parameters as known from the blood vascular system. We find that the lymphatic system is dynamic and adaptable. Different investigative methods yields alternating results. Systematic approaches, consensus on investigative methods, and larger studies are needed to fully understand lymphatic transport and apply this in a clinical context.
Development and characterization of canine‐specific computational models to predict pulsatile arterial hemodynamics and ventricular‐arterial coupling
Authors: Hotek Julia C. , Chirinos Julio A. , Detwiler Theodore J. , Regan Hillary K. , Regan Christopher P.
Published: June 2023

Pulsatile hemodynamics analyses provide important information about the ventricular‐arterial system which cannot be inferred by standard blood pressure measurements. Pulse wave analysis (PWA), wave separation analysis (WSA), and wave power analysis (WPA) characterize arterial hemodynamics with limited preclinical applications. Integrating these tools into preclinical testing may enhance understanding of disease or therapeutic effects on cardiovascular function. We used a canine rapid ventricular pacing (RVP) heart failure model to: (1) Characterize hemodynamics in response to RVP and (2) assess analyses from flow waveforms synthesized from pressure compared to those derived from measured flow. Female canines (n = 7) were instrumented with thoracic aortic pressure transducers, ventricular pacing leads, and an ascending aortic flow probe. Data were collected at baseline, 1 week, and 1 month after RVP onset. RVP progressively reduced stroke volume (SV), the PWA SV estimator, and WSA and WPA pulsatility and wave reflection indices. Indices derived from synthesized flow exhibited similar directional changes and high concordance with measured flow calculations. Our data demonstrate the value of analytical hemodynamic methods to gain deeper insight into cardiovascular function in preclinical models. These approaches can provide complementary value to standard endpoints in evaluating potential effects of pharmaceutical agents intended for human use.
Risk assessment of rain-induced debris flow in the lower reaches of Yajiang River based on GIS and CF coupling models
Authors: Yanting Huang , Yonggang Guo
Published: June 2023

In order to reduce the adverse impact of debris flow disasters on engineering construction facilities and social security in the lower reaches of the Yajiang River, this article selected 11 risk assessment factors such as elevation, aspect, profile curvature, Relief, and rainfall to study the occurrence rule of debris flow in this area. The data of disaster factors caused by debris flow points were derived and analyzed in ArcGIS. Then, factor correlation test and factor sensitivity level were established. The coupling model of qualitative mathematical model (analytic Hierarchy Process, AHP), quantitative mathematical model (binary logistic regression [LR]), machine learning model (random forest RF), and certainty factor (CF) were, respectively, used to predict the risk of debris flow disaster in the study area. After comparison, it was found that the CF–LR model had the highest accuracy. The results show that the areas with high debris flow risk are mainly concentrated in the first half of the lower reaches of the Yajiang River and distributed along both sides of the river bank. The annual rainfall range of 600–700 mm is the critical water source saturation value of debris flow in the study area.
An experimental and numerical study to evaluate performance parameters of GIS circuit breaker during low current interruption
Authors: Rao Mandava Mohana , Abhinav Roy Sonali , Kiran Ravi
Published: June 2023

The basic philosophy of two-stage blast interrupter is combination of self-blast and puffer-interrupter principles. Gas circuit breaker (GCB) with two-stage blast interrupter has two gas chambers. High gas pressure in one chamber generates by using arc energy and in other chamber, by mechanical compression. In such type of breakers, interruption becomes quite difficult at low currents and hence optimization of gas chambers design is essential. In view of above, a numerical program has been developed to calculate SF6 gas pressure-rise in various interrupter volumes and gas flow rates across different passages of interrupter w.r.t. time. To validate model developed in the study, an experimental set-up is established and measured transient gas pressure-rise generated during 420 kV GCB operation. The effect of speed-time characteristics, stroke length and piston diameter on performance parameters of 420 kV GCB model is analyzed. Further, to understand gas flow pattern across insulated nozzle during GCB operation, authors developed a CFX model. By using this numerical model, effect of nozzle profile, gas flow passage areas and profile of gas discharge vents on transient gas pressure and Mach number distribution across inter-electrode gap and gas flow rates through various outlets has been discussed in detail in the paper.
Variation, gender and perception: the social meaning of Japanese linguistic variables
Authors: Sherwood Stacey , Shaw Jason A. , Kawahara Shigeto , Mailhammer Robert , Antoniou Mark
Published: June 2023

The social categories that characterize a speaker frequently correlate with the use of specific linguistic variables. Research suggests that such correlations are sometimes recognized as socially-indexed meanings. This study examines Japanese individuals’ attitudes toward variables that have been shown to correlate with the social category of gender in production. In particular, we contrast patterns of gendered variation that (i) have been prescriptively associated with speaker sex and (ii) tend to correlate with gender in speech production but are outside of the set of prescriptive “women’s language”. We found that individuals have formed associations between the gender of the speaker and prescriptive variables but not other patterns of variation. Additionally, knowledge of the speech context of the variables had no significant effect on individuals’ judgments. The results indicate that not all social information available from patterns of language use is recovered by listeners. More broadly, examining the transmission of social meaning through linguistic variation requires a combination of production- and perception-based research methods.
Immune checkpoint inhibitor-related pancreatitis: What is known and what is not
Authors: Jiang Chunyan , Tang Wen , Yang Xu , Li Hongwei
Published: June 2023

A 47-year-old man presented with a 1 week history of progressive fatigue and decreased appetite. He had stage IV oral squamous cell carcinoma and was treated with sintilimab, a programmed cell death protein 1 inhibitor, 22 months earlier. Laboratory work-up revealed significant elevation of bilirubin, liver enzymes, glucose, and lipase. Ultrasound examination and magnetic resonance cholangiopancreatography showed severe stenosis and occlusion of the pancreatic segment of the common bile duct, and PET/CT revealed swelling of the pancreas with diffuse increase in glucose metabolism. He was diagnosed with immune checkpoint inhibitor (ICI)-related pancreatitis and the treatment with sintilimab was permanently discontinued. He was administered systemic methylprednisolone at a dose of 2 mg/kg/day and subcutaneous insulin injection, without intravenous fluid or protease inhibitor. He improved quickly and received oral methylprednisolone for 10 months in gradually decreasing doses. He maintained well at 20 month follow-up. ICI-related pancreatitis is rare and varied. Further studies are needed to investigate the differences in the two types of ICI-related pancreatitis: acute pancreatitis and autoimmune pancreatitis-like cases.
Crystal structure of poly[bis(μ
2-2,6-bis(1-imidazoly)pyridine-κ
2
N:N′)copper(II)] diperchlorate dihydrate, C22H22Cl2CuN10O10
Authors: Kan Sujuan , Ma Yawei , Chen Chunjie , Qian Jun
Published: June 2023

C22H22Cl2CuN10O10, monoclinic, P21/c (no. 14), a = 6.8548(14) Å, b = 12.482(3) Å, c = 17.162(4) Å, β = 112.54(3)°, V = 1356.2(6) Å3, Z = 2, R

gt
(F) = 0.0575, wR

ref
(F
2) = 0.1726, T = 293 K.
Analysis of the competitive activity of highly qualified wrestlers at the European Championships 2023
Authors:   Kharkiv State Academy of Physical Culture, Volodchenko А.
Published: June 2023

Purpose: to analyse the competitive activity of highly skilled wrestlers at the European Championships 2023. Material and Methods. The following methods were used to solve the research tasks: analysis of scientific and methodological information and the Internet, generalization of best practices, analysis of protocols and videos, method of mathematical statistics. In total, 49 winning bouts (the fight for first and third places and meetings between finalists and third-place athletes) at the 2023 European Greco-Roman Wrestling Championships in Zagreb (Croatia) were analysed. Results: on the basis of the analysis of competitive activity, 10 main technical and tactical actions were allocated, which are most often used by highly skilled Greco-Roman wrestlers: rolling coups - 39 times (36,1 % of all technical and tactical actions); coups by grabbing the arm and head - 4 times (3,7 %); throws with the back belt - 15 times (13,9 %); countermeasures - 3 times (2,8 %); transfer to the floor - 5 times (4,6 %); throws with a turn - 2 times (1,9 %); throws with a deflection - 2 times (1,9 %); dumping - 9 times (8,3 %); pushing out of the mat - 22 times (20,3 %); countermeasures - 7 times (6,5 %). 23,7 % of the analysed fights ended with an early victory for one of the fighters. The largest number of early wins was observed in the 55 kg weight category - 4 (80 % of all fights). There were no early victories in the 67 kg and 87 kg weight categories. The analysis of the effectiveness of the technique showed that high-class wrestlers most often use 2-point technical and tactical actions, then 1-point and 4-point technical and tactical actions. In a large number of fights the result was decided by an assessment for passivity of one of the wrestlers. Conclusions. It is defined that wrestlers of high qualification carry out a greater number of technical and tactical actions in a partner (56,5 %), than in a rack (43,5 %). The most applied technical and tactical action in the floor was a rolling coup, and in a stand - pushing out of the carpet. The least: in the ground - counter-reception, and in the stand - throws with a turn and a deflection. It is noted that the largest number of technical and tactical actions is carried out by wrestlers of light weight categories 55 kg (23 techniques) and 60 kg (15 techniques), and the smallest - by wrestlers of middle weight categories 77 kg (5 techniques) and 87 kg (6 techniques).
Popularity of martial arts in Ukraine
Authors:   Khmelnytsky National University, Kvasnytsya О. , Petrova N. ,   Borys Grinchenko Kyiv University, Korolov B. ,   Kyiv National Economic University, Liashenko O. ,   Kyiv National Economic University, Verbytskyi S. ,   National University of Life and Environmental Sciences of Ukraine
Published: June 2023

Purpose: to analyze the trends in the popularity of Olympic martial arts in Ukraine in recent years. Material and Methods. The following methods were used in the study: analysis of scientific and methodological literature and Internet sources, analysis of data from open information systems, methods of mathematical statistics. The database of the Google Trends web application (trends.google.com) was used to determine the popularity of sports in Ukraine and the world. The data was obtained for the last five years, from February 2018 to February 2023. Only certain types of martial arts were considered, whose athletes were represented at the XXXII Summer Olympic Games held in Tokyo in 2021. The list included the following sports: wrestling (freestyle, women's, Greco-Roman), boxing, judo, karate, and fencing. Results: preliminary analysis showed that boxing is many times more popular than other martial arts. The number of queries related to boxing is 6-8 times higher than the number of queries related to karate, judo or wrestling. In 2020, O. Usyk moved up to the heavyweight division, and his fight with Dereck Chisora in 2021 was one of the most anticipated events in the boxing world. Over the past 5 years, Ukraine has seen a certain popularity of martial arts such as wrestling, fencing, judo, and karate. According to Google Trends, Ukrainians' interest in wrestling has declined slightly. The most popular queries were related to athletes and their achievements, as well as women's wrestling. Important events in the world of wrestling were the Olympic Games, the World and European Championships, where Ukrainian athletes performed well. The period 03.2018-02.2020 compared to the period 07.2020-02.2022 shows a higher level of popularity of all four types of martial arts, with the largest difference in karate - by 83 %. The period 03.2020-06.2020 is the period (the period of quarantine restrictions caused by the Covid-19 pandemic) when there was a decline in the popularity of all four martial arts, and the largest decline was in wrestling - by 50 %. The period 03.2022-02.2023 compared to the entire period (03.2018-02.2023) shows that all types of martial arts are experiencing a decline in popularity, with wrestling and judo experiencing the largest decline in popularity. Conclusions. The results show that the level of popularity of martial arts in Ukraine has fluctuated over the past 5 years. The most popular martial arts in Ukraine are karate and wrestling, while fencing and judo are less popular. It can also be seen that the Covid-19 pandemic has affected the level of popularity of martial arts in Ukraine, reducing their popularity in March-June 2020, and the introduction of martial law in Ukraine has also had a significant negative impact.
Manifestation of indicators of special endurance of taekwondo players 12 14 years old
Authors:   Kharkiv State Academy of Physical Culture, Palii O.
Published: June 2023

Purpose: to investigate the dynamics of special endurance indicators under the influence of the proposed methodology. Material and methods. The research used the following research methods: theoretical analysis and generalization of scientific and methodological literature and the Internet, pedagogical testing, pedagogical experiment, methods of mathematical statistics. Results. When performing the bandal chagi kick in the first test, the difference between the arithmetic means before and after the experiment was 4,74 hits, and the coefficient of variation decreased by 7,64 % in the experimental group. In the second test, the difference in arithmetic means was 3,54 strokes, and the coefficient of variation decreased by 3,19 % in the experimental group. In the third test, the difference in arithmetic averages was 10,66 strokes, the coefficient of variation decreased by 6,48 %. In the fourth test, the difference in arithmetic averages was 9,14 strokes, and the coefficient of variation decreased by 6,49 %. In the fifth test, the difference in arithmetic averages was 12,8 strokes, and the coefficient of variation decreased by 7,48 %. When performing a dolyo chagi kick in the first test, the difference in arithmetic averages was 8,46 strokes, and the coefficient of variation decreased by 8,48 %. In the second test, the difference in arithmetic averages was 9,67 strokes in the experimental group before and after the experiment, and the coefficient of variation decreased by 4,61 %. In the third test, the arithmetic mean increased by 9,86 strokes, and the coefficient of variation decreased by 4,82 %. In the fourth test, the difference in arithmetic averages was 10,34 strokes, and the coefficient of variation decreased by 6,01 %. In the fifth test, the arithmetic mean difference was 9,74 strokes in the experimental group after the experiment, and the coefficient of variation decreased by 6,55 %. When performing a nerio chagi kick in the first test, the difference between the arithmetic averages before and after the experiment was 8,53 strokes, and the coefficient of variation decreased by 5,12 %. In the second test, the difference in arithmetic averages was 8 strokes, and the coefficient of variation decreased by 7,21 %. In the third test, the difference in arithmetic means was 7,93 strokes, and the coefficient of variation decreased by 6,33 %. In the fourth test, the difference in arithmetic averages was 7,27 strokes, the coefficient of variation decreased by 4,88 %. In the fifth test, the difference in arithmetic averages was 8,6 strokes, and the coefficient of variation decreased by 5,18 %. Conclusions. The technique proposed by us has a positive effect on the development of special endurance of taekwondo players aged 12–14. This is evidenced by the results obtained at the end of the experiment. Thus, taekwondo players of the experimental group have significantly higher indicators of the development of special endurance in all tests (p≤0,05).
Indicators of physical fitness of taekwondo athletes aged 15-17 years
Authors:   Kharkiv State Academy of Physical Culture, Pashkova V.
Published: June 2023

Purpose: to define the indicators of physical fitness of taekwondo players of 15-17 years old. Material and Methods. 120 taekwondo players took part in the research: in the 1st group – sportsmen of 15 years old, in the 2nd group – 16 years old in the 3rd group – 17 years old, 40 in each age group. The qualification of sportsmen is 1-2 adult category. The following methods were used in the research: analysis and generalization of scientific-methodical and special literature, information on the Internet, pedagogical testing, methods of mathematical statistics. The statistical analysis of the obtained data and correlation analysis between indicators of physical fitness was carried out with the help of the licensed program MS Excel (2010). Indicators of descriptive statistics were determined: arithmetic mean, standard deviation, error of arithmetic mean. Results: the analysis of physical fitness of taekwondo players that by average indicators during 15-17 years the results differ on average from: 0,12 to 57,96 %. The greatest difference in indicators of physical fitness of taekwondo players of 15-17 years old – 57,96 % was observed in the test of flexion of extension of hands in a lying rest, and the least 0,12 % in a run on 400 m. High correlations between: pulling up on a high crossbar and flexion of extension of hands in a lying support r=0,597 were found in 15-year-old of taekwondo players, and high inverse correlations were found between indicators: running on 100 m and jumping on a rope for 1 min r=-0,570, in 16-year-old of taekwondo players - between indicators: torso tilt forward from a sitting position and a rope jump for 1 min r=0,749; change of stances for 1 min and a rope jump for 1 min r=0,792; change of stances for 1 min and a torso tilt forward from a sitting position r=0,739, 17-year-old of taekwondo players – between: index, 200 m run and 100 m run r=0,579. Conclusions. The research has established that average statistical indicators of physical fitness of sportsmen with age, by the majority of indicators, become more homogeneous, in 17-year-old of taekwondo players V=8,53-51,19 %, in 16-year-olds – V=10,38-46,58 %, and in 15-year-olds – V=10,31-60,02 %. With age, there is a decrease in high inverse correlations and an increase in the number of medium correlations. This is due to the fact that with age, the improvement of physical fitness indicators occurs due to the improvement of special physical fitness.
Comparative analysis of the level of special physical fitness of judokas of different qualifications
Authors:   Dnepropetrovsk professional college of sports, Pyroh Y.
Published: June 2023

Purpose: to conduct a comparative analysis of the level of special physical fitness of judokas of different qualifications. Material and methods. The following methods were used to solve the tasks of the research: the analysis of scientific and methodical information, sources of the Internet and generalization of the best practical experience, pedagogical testing, timing, methods of mathematical statistics. The pedagogical study involved 24 judokas. The participants were divided into two groups: group 1 – 12 qualified sportsmen (qualification: 1st category, KMSU; age: 19,11±1,97 years); group 2 – 12 highly qualified sportsmen (qualification: MSU, MSUMC; age: 26,07±3,17 years). Results: the scientific analysis of methodical information, sources of the Internet and the best practical experience allowed to define that for testing of special physical fitness of judokas it is necessary to conduct tests on high-speed-power and coordination abilities, power and special endurance. The results of testing the special physical qualities of judokas made it possible to establish that the performance of highly skilled athletes is higher than that of skilled ones in all tests: «running for 100 meters» by 7 %; «flexion-extension of arms in a lying position in 20 seconds» by 12 %; «pulling up on a crossbar in 20 seconds» by 14 %; «long jump from a place» by 10 %; «pulling up on a crossbar» by 15 %; «flexion-extension of arms in a lying position» by 13 %; «squats with a partner of equal weight» by 21 %; «hanging on bent arms» by 19 %; «running on a wrestling «bridge» around the head 5 times to the right and left» by 5 %; «10 flips in both directions through a partner standing in the floor» by 4 %; «throws of a partner with a turn at speed for 1 min» by 16 %; «uchi-komi at speed (without separation of the partner's legs from the tatami) for 1 min» by 12 %. It is established that indicators of coefficient of variation V on all control tests at highly skilled sportsmen are higher, than at less skilled, it is explained by that at highly skilled judokas the training process is more individual and in a number of indicators of special physical fitness indicators of coefficient of variation V reach very high differences. Conclusions. The pedagogical testing of special physical fitness of qualified and highly skilled judokas was carried out. The results of testing showed that indicators of special physical fitness in highly skilled judokas are significantly better (p<0,05) than in skilled judokas in tests characterizing high-speed and power qualities, special and power endurance, the value of t ranges from 2,09 to 2,65. Statistically unreliable (p>0,05) were indicators in control tests characterizing coordination abilities.
Features of physical training in various types of martial arts (systematic review)
Authors:   Kharkiv State Academy of Physical Culture, Tropin Y. , Romanenko V. ,   Kharkiv State Academy of Physical Culture, Myroshnychenko Y. ,   Kharkiv State Academy of Physical Culture, Dzherelii V. ,   National Law University named after Yaroslav the Wise, Volodchenko A. ,   Kharkiv State Academy of Physical Culture
Published: June 2023

Purpose: based on the analysis of scientific and methodological information and internet resources, as well as generalization of advanced practical experience, to establish the peculiarities of physical training in various types of martial arts. Materials and methods. Тo conduct the research, the following methods were used: analysis of scientific and methodological information and internet resources, as well as generalization of advanced practical experience. A computer search for literature in scientific databases such as Scopus, PubMed, Web of Science, and Google Scholar was carried out. Results: through the analysis of scientific and methodological information and internet sources, as well as generalization of advanced practical experience, the peculiarities of general and specific physical training in various types of martial arts were established. It was determined that the general physical preparation of martial artists depends on the type of martial art and includes physical endurance, speed, strength, and coordination of movements. These characteristics may vary depending on the selected type of martial art, and different aspects of physical training may have a more or less significant role. In general, aerobic and anaerobic endurance, speed-strength abilities, speed, flexibility, coordination, and technique of movements are important aspects of specific physical training for most types of martial arts. Different types of martial arts may have their own peculiarities depending on their specifics, so it is important to study these aspects for each specific type of martial art. Conclusions. Іt has been established that scientists in their research on the peculiarities of physical training of martial artists paid attention to such aspects as modeling, based on which practical recommendations were given regarding the use of means and methods of physical training in the training process; conducted comparative analysis to identify the peculiarities of the level of development of physical qualities; established the relationship between physical qualities and other types of preparedness; proposed sets of exercises to improve both general and specific physical training.
Literary Walks with Dostoevsky (Book Review: Tikhomirov B. N. Dostoevsky. Literary Walks Along Nevsky Prospekt. From the Winter Palace to Znamenskaya Square. Мoscow, Lingvistika Publ., Boslen Publ., 2022. 480 p.)
Authors: Fedorova Elena
Published: June 2023

In B. N. Tikhomirov’s book “Dostoevsky. Literary walks along Nevsky Prospekt. From the Winter Palace to Znamenskaya Square” shows St. Petersburg in the time of F. M. Dostoevsky. In particular, it contains a description of the architectural landscape of Nevsky Prospekt, discusses Dostoevsky’s relationship with contemporary writers, critics and editors of magazines, offers historical, cultural and everyday commentary on fragments from “A Writer’s Diary,” the novels “Crime and Punishment,” “The Idiot,” “A Raw Youth,” stories “The Double,” “Notes from the Underground,” “The Crocodile,” describes the prototypes of the heroes of these works, and shows their routes. The essays and artistic miniatures included in the book recreate living images of the great writer and his contemporaries, raise acute moral and socio-political problems. The book becomes a journey for the reader in different senses — geographical, historical, artistic, and mental.
The Pre-Siberian Period in the Biography of F. M. Dostoevsky in New Documentary Research (Review of the Collective Monograph: New Archival and Printed Sources of the Scientific Biography of F. M. Dostoevsky. St. Petersburg, The Russian Christian Academy for the Humanities Publ., 2021. 260 p.)
Authors: Shalina Marina
Published: June 2023

The peer-reviewed collective monograph is a series of articles, each of which, filling a certain lacuna of the least studied first half of F. M. Dostoevsky's life, is an example of a real investigation of confusing, unclear or completely distorted facts about the writer and his genealogy based on a strict systematization of the already known and newly discovered documentary sources. The main body of articles and the appendix were prepared by the project manager B. N. Tikhomirov, three sections — with the participation of E. D. Maskevich, and one — in co-authorship with N. A. Tikhomirova. The study includes various aspects that in one way or another influenced the formation of the personality and worldview of the classic, and his artistic system. The reader will learn numerous new details not only about Fyodor Mikhailovich Dostoevsky, but also about his milieu (father, brothers, especially Mikhail, with whom he was closest; fellow students, teachers and colleagues in the Main Engineering School and the Drawing Room of the Engineering Department), as well as about the collisions of this period, the vicissitudes of the time of Dostoevsky's entry into the literary circle, months of imprisonment in the Peter and Paul Fortress, and the details of sending convicted Petrashevites to Siberia. Through the prism of the writer's scientific biography, little-known facts of Russia’s history and culture are revealed to the general public, i. e., the peculiarities of the education system (using the example of the educational process at the Main Engineering School) and the provision of material assistance from the imperial treasury to the families of political prisoners, including Mikhail Dostoevsky. The literary block of the study included a scrupulous analysis of the reading circle of the young Dostoevsky, which in a certain sense determined the features of his artistic poetics: the book “One Hundred and Four Sacred Stories of the Old and New Testaments” by I. Gibner, as well as Gothic novels by A. Radcliffe, and numerous “pseudo-Radcliffians.” Many archival documents reflected in the monograph are published and introduced into scientific circulation for the first time. The logical conclusion of the data added by the authors to the scientific biography of Dostoevsky of the preSiberian period was the first complete publication of the memoirs written by Baron A. E. Rizenkampf, a friend of the writer's youth, with a commentary by B. N. Tikhomirov, which supplements and corrects certain points in the previous editions of the memoirs. The importance of the reviewed monograph cannot be overestimated. It seems necessary to continue the monumental work of the authors to fill in the gaps in the scientific biography of F. M. Dostoevsky.
Досягнення, актуальні виклики та перспективи математичних досліджень в установах Відділення математики НАН України
Authors: Тимоха Олександр Миколайович
Published: June 2023

Досягнення, актуальні виклики та перспективи математичних досліджень в установах Відділення математики НАН України
Критична та стратегічна мінеральна сировина для економічної безпеки та повоєнного розвитку України
Authors: Шехунова Стелла Борисівна
Published: June 2023

Критична та стратегічна мінеральна сировина для економічної безпеки та повоєнного розвитку України
Наука та інновації: шанс для дерегуляції та нарощування ефективності галузі
Authors: Курбатов Денис Ігорович
Published: June 2023

Наука та інновації: шанс для дерегуляції та нарощування ефективності галузі
Щодо забезпечення синхронної роботи ОЕС України з ENTSO-E
Authors: Ущаповський Костянтин Валерійович
Published: June 2023

Щодо забезпечення синхронної роботи ОЕС України з ENTSO-E
Енергетика України: сучасний стан, перспективи відновлення та розвитку
Authors: Жаркін Андрій Федорович
Published: June 2023

Енергетика України: сучасний стан, перспективи відновлення та розвитку
Про діяльність Центру інноваційних медичних технологій НАН України
Authors: Тодуров Іван Михайлович
Published: June 2023

Про діяльність Центру інноваційних медичних технологій НАН України
Захист та відновлення ґрунтів у повоєнний період
Authors: Заіменко Наталія Василівна
Published: June 2023

Захист та відновлення ґрунтів у повоєнний період
Роботи установ Відділення фізико-технічних проблем матеріалознавства НАН України для потреб оборони та безпеки держави
Authors: Баглюк Геннадій Анатолійович
Published: June 2023

Роботи установ Відділення фізико-технічних проблем матеріалознавства НАН України для потреб оборони та безпеки держави
Політико-правові детермінанти повоєнного розвитку економіки України
Authors: Устименко Володимир Анатолійович
Published: June 2023

Політико-правові детермінанти повоєнного розвитку економіки України
Оптимізація рішень при плануванні місій безпілотних літальних апаратів
Authors: Гуляницький Леонід Федорович
Published: June 2023

Оптимізація рішень при плануванні місій безпілотних літальних апаратів
Діяльність Українського міжнародного комітету з питань науки і культури при НАН України у 1990—2022 рр.
Authors: Яцків Ярослав Степанович
Published: June 2023

Діяльність Українського міжнародного комітету з питань науки і культури при НАН України у 1990—2022 рр.
Дороговказ академіка В.І. Вернадського
Authors: Горбулін Володимир Павлович
Published: June 2023

Дороговказ академіка В.І. Вернадського
The Communication Language Style of The Government of Kuwait During The Covid-19 Pandemic | Gaya Bahasa Komunikasi Pemerintah Kuwait di Masa Pandemi Covid-19
Authors: Ghufron Zaki , Anwar Endang Saeful , Alawiyyah Azizah , Mufrodi Mufrodi
Published: June 2023

The purpose of this study is to describe that the Government of Kuwait, through its official social media, uses a lot of euphemistic and dysphemic language styles in conveying information in the era of the Covid-19 pandemic. This study uses a qualitative approach with content analysis to understand the symbolic messages contained in documents, paintings, dances, songs, literary works, and others as unstructured data. The data collection technique used is the observation and note-taking technique. Listening in the context of this study means reading, which is then recorded to document the data obtained. The data analysis technique used is the equivalent referential technique to find out grammatical units such as euphemisms and dysphemisms, while to analyze the background of the use of euphemisms and dysphemisms, pragmatic equivalent analysis is used. Based on the results of an analysis of data obtained from the official social media of the Ministry of Health of Kuwait, many euphemistic and dysphemistic forms were found in conveying information regarding the latest matters and developments regarding Covid-19 in the country of Kuwait. It is used for specific purposes. The purpose of using euphemistic forms is to avoid mentioning negative reality, which aims to minimize the harmful effects of utterances that seem scary, worrying, make noise, offend, hurt, disrespect, or violate social norms. Euphemistic forms also aim to evoke an optimistic attitude toward residents in dealing with the coronavirus pandemic. The use of the dysphemistic form used by the Kuwaiti Ministry of Health in presenting information about matters related to Covid-19 in that country is aimed at scaring, showing annoyance, and giving warnings so that they are even more vigilant in dealing with the Covid 19 pandemic.
Implementation of Principles and Steps for Selecting Teaching Materials for Mahārah Al-Istimā’s Subject
Authors: Yusuf Muhammad , Nawas Kamaluddin Abu
Published: June 2023

This article aims to analyze the implementation of the principles and steps in selecting teaching materials for the mahārah al istimā'. Using qualitative research, data were collected through observations, interviews, and documentation guided by instruments in the form of guidelines for each technique. The collected data is then systematized and analyzed based on the chosen theory guidance. The research findings show that the selection of teaching materials for learning the mahārah al istimā' subject is still experiencing several obstacles. However, the selection of teaching materials follows the learning objectives, and the needs of students, describing the background and atmosphere experienced by students, easy and economical to use. The steps for selecting teaching materials consist of identifying the aspects contained in the standard of competence and basic competence, identifying the types of learning materials, and choosing the types. The steps and principles of selecting teaching materials cannot be fully applied due to various factors.