bluuebunny/crossref_metadata_2025 huggingface dataset:
Questionnaire of comparative feeling of inferiority index: translation, validation and experience of use in Ukraine
Authors: Berezyuk O. , Filts O. , Hrabchak V. , Sirko R.
Published: January 2023

Annotation. Among the various destructive phenomena that negatively affect the harmony of an individual's life, the issue of overcoming the feeling of inferiority takes on special importance. The study of this phenomenon among the population of Ukraine in the modern conditions of martial law and the COVID-19 pandemic is extremely relevant. The aim of the study is to translate, adapt and validate the questionnaire "Comparative Feeling of Inferiority Index", as well as to determine the feeling of inferiority index among student youth with its help. The following descriptive and analytical statistics methods were used in the research: arithmetic mean with standard square deviation (М±SD), percentages with error (Р±m, %), Cronbach's alpha coefficient (α-coefficient), correlation according to Spearman's rank (R). Within the framework of the research, a verified translation of the questionnaire into Ukrainian was carried out for the first time with adaptation of the terminology to the specifics of the language. Pilot testing of the translated questionnaire and repeated re-testing with the same participants was conducted, which proved excellent reliability and diagnostic discriminative ability of the method (R=0.74, p<0.001). The questionnaire was tested on a representative sample (n=612) involving students of higher education institutions of Lviv. The conducted testing proved the validity and high level of reliability of the translated questionnaire: reliable values of internal consistency estimates were obtained according to Cronbach's alpha coefficient – 0.85 for the assessment of a family member and 0.80 for the self-assessment scale. Also, according to the results of the testing, it was established that 7.03±1.03% of the interviewed students had a feeling of Inferiority, and 11.11±1.27% – a feeling of superiority.
Dynamics of photosynthetic solar active radiation in Ukraine over 1986 - 2015
Authors: Rybchenko L. S. , Savchuk S. V. , Timofeev V. E. , Shcheglov A. A.
Published: January 2023

Photosynthetically active solar radiation (PSR) – solar radiation within the wavelength range of 380 ¼710 nm – forms a basis of plants' life that determines their photosynthesis. No measurements of photosynthetically active solar radiation (PSR) take place in Ukraine due to the lack of standard devices. Direct, scattered and total PSR is calculated via transition measurements and coefficients, whereas total PSR is measured via sunshine duration – using the indirect method. The purpose of the research is to determine PSR and its dynamics during specific months and the warm period of the year (April-October). The components of the radiation regime within the network of actinometric and meteorological observations in Ukraine for 1986 - 2015, 1986 - 1995, 1996 - 2005, 2006 - 2015 were obtained using mathematical statistics and climatological methods. In the course of the research changes in the PSR during specific months and the warm period over specific decades were determined. During the months of the warm period over 1986 -2015, direct, diffused, total PSR and total PSR calculated via sunshine duration tend to increase from the west, northwest or Ukrainian Carpathians to the southern steppe zone and Crimea. During the warm period over 1986 - 1995, the amount of direct PSR varies within 472 ¼ 891 MJ/m², diffused radiation – 887 ¼ 1156 MJ/m², total radiation – 1457 … 1917 MJ/m², total PSR calculated based on sunshine duration – 1621 … 2056 MJ/m²; over 1996 - 2005 the amount of direct PSR varies within – 469 … 1030 MJ/m², diffused – 802 … 1004 MJ / m², total – 1305 … 1973 MJ/m², total PSR calculated based on  sunshine duration – 1654 … 2192 MJ/m²; over 2006 - 2015 the amount of direct PSR varies within 485 ¼ 1065 MJ/m², diffused radiation – 737 ¼ 951 MJ / m², total PSR – 1270 … 1977 MJ / m², total PSR calculated based on sunshine duration – 1649 … 2233 MJ / m². The increase in integrated direct solar radiation over 1996 - 2005 compared to 1986 - 1995, as well as over 2006 - 2015 compared to 1996 - 2005, led to an increase in direct PSR; the decrease in diffused solar radiation led to a decrease in diffused PSR; and ambiguous changes in the components of total solar radiation led to fluctuations in total PSR; increase in sunshine duration is accompanied by an increase in total PSR calculated based on sunshine duration. The research is relevant due to the factor of modern climate variability at the global and regional levels. The study of PSR changes is an urgent task of modern agrometeorology. It enables long-term effective planning of agricultural development.
Influence of different environments on oocyte maturation and development of bovine embryos in vitro
Authors: Kovpak Vitalii , Kovpak Oksana , Babii Yelyzaveta , Derkach Serhii , Masalovych Yurii
Published: January 2023

According to the International Embryo Technology Society, the number of bovine embryos produced by in vitro fertilization technology is increasing every year. However, despite the large volumes of their production, the effectiveness of this method is still low and needs to be improved. Therefore, the purpose of this study was to compare the effectiveness of two commercial media – Origio Sequential Series (Origio, Denmark) and a panel of products manufactured by Minitube (Germany) in terms of oocyte maturation and development of bovine embryos in vitro. At the first stage of the study, a comparative evaluation of oocyte maturation media was performed: based on TCM 199 (Minitube) and Universal (Origio) culture media. At the second stage, the protocols for culturing bovine embryos were compared: Minitube and the two-stage Origio culture protocol with changing media. Therewith, it was found that the use of TCM 199 medium for oocyte maturation is more effective compared to Universal. Thus, at 48 hours of cultivation (the initial stage of embryo development), 64.3 ± 1.0 and 60.3 ± 1.4% of 2-8 cell embryos were obtained, and on Day 8 – 25.3 ± 1.0 and 20.0 ± 0.6% of blastocysts, respectively. The results of a comparison of bovine embryo culture protocols showed that when using both Minitube and Origio media, the percentage of division and the percentage of resulting embryos corresponded to their known values. It was found that the Minitube cultivation protocol is more effective than Origio. At 48 hours, the number of embryos obtained using the Minitube culture protocol was 1.3% higher compared to Origio, on Day 6 – by 7.8%, and on Day 8 – by 3.8%. The results obtained are a necessary component of the development of successful processes to produce bovine embryos in vitro with further implementation in the ruminant reproduction biotechnology
Morphological and biochemical changes in blood parameters in cats with infectious peritonitis
Authors: Melnyk Volodymyr , Mickiewicz Marcin , Martyniuk Oleksandr , Bodnar Alina , Bodnar Maksym
Published: January 2023

Feline infectious peritonitis is a feline disease, the causative agent of which is a mutant coronavirus, which leads to the death of young animals. Presently, this pathology is considered incurable, and therefore it requires a detailed study. The purpose of this study was to establish the features of clinical manifestation and haematological parameters in cats with infectious peritonitis. This paper presents the results of a clinical and laboratory study of 12 cats aged from 6 months to 3 years who were diagnosed with effusive and dry infectious peritonitis. Clinical, laboratory, and visual research methods were used. Laboratory analysis included a study of morphological and biochemical parameters of blood, cytological examination of effusion from the abdominal and pleural cavities, and a Rivalta test. As a result of cytological examination of effusion from these cavities, a high concentration of cells, macrophage accumulation, neutrophil phagocytosis, and red blood cells were detected in the entire field of view. It was found that the predictive value of the Rivalta test for feline infectious peritonitis is 62.5%. According to haematological examination, all sick animals were diagnosed with anaemia, lymphopenia, hypoalbuminemia, hyperglobulinemia, hyperbilirubinemia, increased activity of relative liver- specific enzymes (aspartate aminotransferase, alkaline phosphatase). Trobmocytopenia was observed in two animals, and an increase in blood markers of the functional state of the kidneys (creatinine, urea) was found in one cat. The serum albumin/globulin ratio should also be considered an important diagnostic indicator. Thus, with feline infectious peritonitis, this indicator should be < 0.4. In 11 sick cats, this ratio was characterized by values below 0.4, and in one animal this indicator was 0.46. In general, the obtained data of morphological and biochemical blood tests are not specific for feline infectious peritonitis, and therefore the authors of this paper recommend their comprehensive investigation for diagnostic purposes. An objective assessment of the available methods of laboratory diagnostics will contribute to the creation of a diagnostic protocol for feline infectious peritonitis
The role of SMEs’ resilience capabilities in response to COVID-19 era: Evidence from Kazakhstan and Mongolia
Authors: Altnaa Ulziimaa , Neszmélyi György Iván
Published: January 2023

In many low and middle-income countries, small and medium-sized enterprises (SMEs) play an important role in providing employment, increasing the level of gross domestic product and export share, and in alleviating poverty and inequality. Therefore, governments and international donor organizations take action to diversify and provide access to sustainable financial means for SMEs and support them in many ways. The sudden outbreak of COVID-19 has impacted all-sized enterprises including micro, SMEs, large enterprises, and MNEs negatively, especially in the least developed and developing countries. This is because micro-sized and SMEs were more vulnerable to the pandemic due to their limited financial resources and low resilience capability. Resilience capabilities and innovative characteristics are crucial for SMEs to survive and to respond quickly to sudden phenomena unpredictable in advance. Big enterprises with financial and other resilience capabilities typically address and solve any issue in a timely manner. Even if the theoretical framework of the enterprises’ resilience is well-grounded and studied extensively, most literature in the field mainly focuses on large entities, and only few have explored SMEs. Thus, this study can significantly contribute to practical and theoretical knowledge, especially for SMEs in landlocked countries such as Mongolia and Kazakhstan. This research helped to develop recommendations that are helpful for SMEs to survive during potential threats such as COVID-19, natural disasters, extreme weather conditions (EWCs), and economic recessions.
Sistem Pemantau Kualitas Air Kolam Ikan Koi Berbasis IoT
Authors: Ariyanto Dian , Kusriyanto Medilla
Published: January 2023

Ikan Koi (Cyprinus carpio ) merupakan salah satu ikan yang digemari masyarakat banyak dikarenakan warna yang mempesona dan harganya relative tinggi. Salah satu yang mempengaruhi perkembangan ikan koi adalah kualitas  air. Kualitas air kolam terdiri dari tingkat keasaman air (pH), suhu air dan kandungan mineral yang terlarut atau TDS (Total Disolved Solid). Kualitas air sangat penting sehingga perlu adanya sistem yang mempermudah dalam proses pemantauan kualitas air kolam memalui smartphone berbasis IoT. Perancangan sistem pemantau kualitas air kolam ikan koi berbasis IoT melalui lima tahapan yaitu studi literatur, perancangan alat, pembuatan alat, kalibrasi dan realisasi alat.  Sistem pemantau kualitas air kolam koi menggunakan 3 sensor yaitu sensor pH meter, sensor suhu DS18B20 dan sensor TDS. Pembacaan ketiga sensor akan diolah oleh ESP 32 sebagai mikrontroler dan dikirim ke aplikasi Blynk melalui koneksi wi-fi. Hasil dari pengujian sistem ini diperoleh bahwa aplikasi Blynk mampu menampilkan pembacaan ketiga parameter kualitas air yang terdiri dari pH, suhu dan TDS sehingga memudahkan proses pemantauan kualitas kolam ikan koi. Pembacaan pH air terendah  7.3 dan tertinggi  7.4.  Suhu kolam tercatat terendah 26 ° C pada jam 04.00 sampai 06.00 dan tertinggi pada suhu 27.3 ° C pada jam 12.00-15.00. Pembacaan TDS kolam terendah 33.5 ppm dan tertinggi 34.6 ppm. Kata Kunci:  ikan Koi, IoT, pH kolam, Suhu kolam, TDS kolam
PARAMETERS AFFECTING THE TEMPERATURE OF THE DIAMOND CUTTING DISC WHEN CUTTING BUILDING MATERIALS
Authors:   Odesa state academy of civil engineering and architecture, Bespalova А. , Knysh O. ,   Odesa state academy of civil engineering and architecture, Dashkovska O. ,   Odesa State Academy of Civil Engineering and Architecture, Faizulyna O. ,   Odesa State Academy of Civil Engineering and Architecture, Chumachenko T. ,   Odessa Polytechnic National University
Published: January 2023

The cutting of natural and artificial building materials is most often carried out with metal-based diamond cutting discs at cutting speeds of the order of 50-80 m/sec. The cutting process is accompanied by considerable heat release and heating of the diamond disk. At a temperature of about 600ºC, the tensile strength of a disc is reduced by a factor of 2 and graphitization of diamond grains occurs. Thus, when cutting stone and building materials with a diamond circle, the disk heating temperature should not exceed 600°C. In the work, mathematical modeling of the heating of a diamond cutting disk on a metal base was performed while cutting ceramic materials to determine the time of continuous operation to a critical temperature of 600°C. The simulation results presented in the graphs showed the dependence of the heating temperature of the disk on the diameter of the latter, the speed of rotation, the minute feed, the grain size and the thickness of the disk. Almost all elements of the cutting modes affect the disk temperature, although to a different extent. The vertical feed has the greatest influence. With an increase in the diameter of the cutting disk and a decrease in the rotational speed, the total cutting force, power and heating of the disk in 1 min. and increase with one revolution. The operating time to the critical temperature is significantly reduced. With an increase in the thickness of the cutting disk, the total force and cutting power increase. The simulation results showed that the grain size of the cutting disk significantly affects the important parameters of work. Therefore, if there are no special requirements for surface roughness, it is more profitable to work with a coarser-grained disk. According to the simulation results, it can be said that in order to ensure the maximum thermal resistance of the disk, it is necessary to choose disks with a grain size of at least 25 and work at a vertical feed rate of no more than 0.05 m/min. It is shown that by selecting appropriate process characteristics the time of continuous operation can be of the order of 10 ‒ 12 min without the use of forced cooling.
ІNFLUENCE OF DYNAMIC ASYMMETRY ON THE ROTATION STABILITY IN A RESISTING MEDIUM OF A ASYMMETRIC RIGID BODY UNDER THE ACTION OF A CONSTANT MOMENT IN INERTIAL REFERENCE FRAME
Authors:   Institute of Applied Mathematics and Mechanics of the National Academy of Sciences of Ukraine, Kononov Yu , Cheib A. K. ,   Vasyl’ Stus Donetsk National University
Published: January 2023

Under the assumption that the center of mass of an asymmetric rigid body is located on the third principal axis of inertia of a rigid body, the previously obtained conditions for the asymptotic stability of uniform rotation in a medium with resistance of a dynamically asymmetric rigid body are investigated. A rigid body rotates around a fixed point, is under the action of gravity, dissipative moment and constant moment in an inertial frame of reference. The stability conditions are presented as a system of three inequalities. The first and second inequalities have the first degree relative to the dynamic unbalance, and the third inequality has the third degree. The first and third inequalities are of the second degree with respect to the overturning or restoring moment, and the second inequality is of the first degree. The first and third inequalities are of the fourth degree with respect to the constant moment, and the second inequality is of the second degree. The third inequality is the most difficult to study. Analytical studies of the influence of dynamic unbalance, restoring and overturning moments on the conditions of asymptotic stability are carried out. Conditions for the asymptotic stability of uniform rotation in a medium with resistance to an asymmetric rigid body are obtained for sufficiently small values of dynamic unbalance. Sufficient stability conditions are written out up to the second order of smallness with respect to the constant moment and the first order of smallness with respect to the restoring and overturning moments. Instability conditions are obtained for sufficiently large dynamic unbalance. The effect of dynamic unbalance on the stability conditions for the rotation of a rigid body around the center of mass is studied. It is shown that in the absence of dissipative asymmetry, it is sufficient for asymptotic stability that the axial moment of inertia of a rigid body be greater than the double equatorial moment and that the well-known necessary stability condition for a symmetric rigid body be satisfied.
COMPARATIVE CHARACTERISTICS OF THE APPLICATION OF POLYPROPYLENE AND BASALT FIBER IN ROAD CONCRETE
Authors:   Kharkov national automobile und highway university, Tolmachov S. , Belichenko O. ,   Kharkov national automobile und highway university, Doroschenko M. ,   Kharkov national automobile und highway university, Pokusa Yu. ,   Kharkov national automobile und highway university
Published: January 2023

The widespread use of fiber-reinforced concrete in construction is due to a number of their advantages. However, despite many years of research in this direction, scientists from different countries describe data obtained experimentally, the results of which differ. In some cases, the results obtained differ not only numerically, but also fundamentally. Basically, these are fibers of artificial origin, which are used for the manufacture of fiber-reinforced concrete. The most commonly used metal, polymer, basalt, glass fibers. To a lesser extent, carbon and polyamide fibers are used. It should be noted that the effectiveness of polyamide fiber is very doubtful, primarily because of the tendency of this type of fiber to swell. At present, the cost of carbon fiber is quite high, which is the main obstacle to its widespread use in concrete. Metal and glass fibers are subject to corrosion, and this adversely affects the properties of concrete. Since road and airfield concretes are used in aggressive conditions, these shortcomings do not allow the use of metal, glass, carbon and polyamide fibers in them. However, it follows from the analysis of the literature that the greatest controversy concerns the use of basalt and polypropylene fibers. The greatest controversy concerns the use of basalt and polypropylene fibers. There is no consensus which of these types of fiber is more effective for use in concrete. What amount of fiber should be introduced into the concrete mixture to achieve the maximum result is also unknown. This has led to the fact that basalt and polypropylene fibers are used very rarely in road and airfield concrete. The article presents an analysis of the results of the use of polypropylene and basalt fibers in concrete, obtained by researchers in different countries. The experimental data obtained by the authors are shown. The main attention is paid to the comparative efficiency of the use of these types of fibers. Strength, frost resistance and abrasion of road concrete are taken as criteria for evaluating the effectiveness. Quantitative intervals for the use of each type of fiber are established.
ENFLASYON VE ENFLASYON BELİRSİZLİĞİ ARASINDAKİ ZAMANLA DEĞİŞEN İLİŞKİNİN ANALİZİ: TÜRKİYE ÖRNEĞİ
Authors: ERER Deniz
Published: January 2023

Enflasyon belirsizliği, reel ekonomi için enflasyonun en önemli maliyetlerinden birini temsil etmektedir. Enflasyon belirsizliğinin yükselmesi, fiyatlama davranışlarını bozulmasına neden olarak, yatırımların ertelenmesine ve refah kaybına yol açmaktadır. Enflasyon ve enflasyon belirsizliği, bir ekonomideki finansal istikrara ilişkin temel göstergelerdir. Bundan dolayı, enflasyon ve enflasyon belirsizliği arasındaki ilişki merkez bankalarının para politikaları uygulamalarında dikkate aldıkları önemli bir faktördür. Bu doğrultuda, bu çalışmada Türkiye’de Ocak 1997 - Şubat 2022 döneminde enflasyon ve enflasyon belirsizliği arasındaki nedensellik ilişkisi zamanla değişen yaklaşım çerçevesinde analiz edilmiştir. Çalışmada enflasyon belirsizliğini ölçmek amacıyla Genelleştirilmiş Otoregresif Koşullu Değişen Varyans (GARCH) modelinden yararlanılmıştır. Enflasyon ve enflasyon belirsizliği arasındaki ilişkinin incelenmesinde ise zamanla değişen Granger nedensellik analizinden yararlanılmıştır. Çalışmanın sonucunde elde edilen bulgular, 2008 yılında enflasyon ve enflasyon belirsizliği arasında çift yönlü bir Granger nedensellik ilişkisinin varlığını göstermektedir. 2020 yılında ise enflasyon belirsizliğinin enflasyonu arttırdığı tespit edilmiştir. Elde edilen bu sonuçlar, Türkiye’de ilgili dönemde Friedman-Ball ve Cukierman-Meltzer hipotezlerinin geçerli olduğunu göstermektedir.
Innovation, Networks and Emerging Jobs
Authors: Arguello Leandro Rachel , Constantino Michel Angelo , Dorsa Antonio Carlos , Bezerra de Souza Diego , Souza de Araújo Flavio Henrique , Teixeira Pereira Thiago , Martins Viegas de Oliveira Cristiane
Published: January 2023

This research presents a bibliometric study of scientific productions involving the themes of innovation, networks and emerging jobs in the English language, available in the Web of Science’s database, dating from 1945 to 2020. Seeking to clarify some findings, in the statistical study of Web of Science’s publications, this research demonstrates the orientation of the reasoning of the investigated authors, regarding innovation policies. Of the 49 publications found in a previous screening, we obtained the number of 44 publications in English, which were submitted to statistical, Reinert and Similitude analyses, using the IRAMUTEQ software. During the research, it was possible to notice that this group of words presented a relation in the context of the texts available in the base; that is: the tool presented, statistically, four groups of words with greater relevance, connecting the three themes. In the analysis, IRAMUTEQ presented a division in four clusters (using Reinert’s method) that list the groups of words by their relation of higher incidence and correlation during the study (development, literature, information and form). According to this mapping, it is possible to conclude that the correlation of themes refers to a group of researchers who, in their discourses, connect technological and economic development to relations in an innovation network, and that 50% of the published texts dealt with issues involving the four largest groups of words: development, network, innovation and business.
Sorption of the Main Dose-forming Radionuclides of Nuclear Power Plants Drain Water on Natural Bentonite in the Process of their Co-ozonation
Authors:   SI “The Institute of Environmental Geochemistry of the National Academy of Sciences of Ukraine”, Shabalin B. H. , Yaroshenko K. K. ,   SI “The Institute of Environmental Geochemistry of the National Academy of Sciences of Ukraine”, Lavrynenko O. M. ,   I. M. Frantsevich Institute for Problems of Materials Science of the National Academy of Sciences of Ukraine, Marinich O. V. ,   SI “Radioenviromental Centre of the National Academy of Sciences of Ukraine”, Mitsiuk N. B. ,   SI “The Institute of Environmental Geochemistry of the National Academy of Sciences of Ukraine”
Published: January 2023

The article presents the general pattern of the combined process of oxidative decomposition of organic components of simulated nuclear power plant (NPP) drain water and sorption interaction of the imitators of main dose-forming radionuclides (Cs – radiolabel for 137Cs; stable isotopes of Co, Sr, Mn salts) on natural bentonites from the Cherkasy deposit in presence of sorption-reagent compounds — iron (II) and manganese (II) salts. Hydroxides, oxyhydroxides and oxides of Fe and Mn formed during ozonation are predominantly localized on the surface of bentonite. The chemical composition of the main elements of bentonite after drain water ozonation with the addition of iron and manganese salts remains almost the same as that of natural bentonite. The phase composition of bentonite is presented by the main rock-forming mineral montmorillonite and secondary mineral quartz. The iron-containing phases of the ozonised bentonite are Fe(II)- Fe(III) layered double hydroxides (Green Rust), goethite α-FeOOH and magnetite Fe3O4, and the manganese-containing phases are hausemannite Mn3O4, manganese oxide (II) and manganese oxyhydroxide MnO(OH)2. The iron- and manganese-containing phases deposited on the bentonite surface during ozonation are predominantly weakly crystallized or amorphized structures. At the concentration of salts of iron (50 mg/dm3) and manganese (100 mg/dm3) in the drain water, the specific surface area of bentonites with the formed layer of iron and manganese hydroxides, (oxy)hydroxides and oxides increases compared to natural bentonite (34.2 m2/g) and equals to 55 and 51 m2/g, respectively. The degree of radionuclide removal during ozonationof the simulated solution with the initial concentration of cations (Fe2+ — 5 mg/dm3; Mn2+ —10 mg/dm3; Ca2+ — 5 mg/dm3) in the presence of natural bentonite is 137Cs — 78% ± 2%, Sr2+ —97.55% ± 1%, Co2+ — 96.5% ± 1%, Mn2+ — 99.7% ± 0.5%. To preserve the efficiency of 137Cs and Co2+ radionuclide removal, the initial concentration of cations in the solution can be increased to the following values: Fe2+ — 50 mg/dm3, Mn2+ — 100 mg/dm3, Ca2+ — 50 mg/dm3, and to: Fe2+ —500 mg/dm3, Mn2+ — 1,000 mg/dm3, Ca2+ — 500 mg/dm3 for Sr2+ and Mn2+ removal.
Analysis and Modeling of Meteorological Conditions for the Transport of Radionuclides During Periods of Forest Fires and Dust Windstorms in the Chornobyl Exclusion Zone
Authors:   Institute for Safety Problems of Nuclear Power Plants, NAS of Ukraine, Lev Т. D. , Таlerko M. M.
Published: January 2023

The simulation of meteorological conditions of the atmospheric transport of radioactive aerosols during the periods of wildland fires (2015, 2018, 2020 and 2022) and dust storm (April 16–17, 2020) in the Chornobyl Exclusion Zone was carried out using the archive of reanalysis data of the European Center for Medium-Term Weather Forecasts (ECMWF). Modeling of meteorological conditions and preparation of aerosynoptic information for the LEDI model of atmospheric transport and deposition of pollutants during periods of intense emission of radionuclides into the atmosphere was carried out using two sources of information: the results of the numerical weather forecast model WRF-ARW (USA) using the databases of the Reanalysis Project, and forecast data obtained according to the GFS global model and the ECMWF operational model, which are stored in the database of the CDS climate data repository (ERA5 Copernicus). The used WRF-ARW numerical model is adapted for the territory of Ukraine by selecting parameterization models of the main physical processes in the atmosphere in accordance with synoptic situations and the season of the year. A description of typical and extreme synoptic situations during the analyzed periods of wildland fires is given using the archive of synoptic maps of surface pressure and topography AT500 for the European territory and modern technologies of geoinformation systems. With the help of the conducted synoptic analysis of wildland fire periods, the most typical synoptic situations associated with the passage of cold fronts and the direction of north and northwest winds, which contribute mostly to the secondary radioactive contamination of environmental objects in the zone of influence of emission sources in the Chornobyl Exclusion Zone, were identified. Because of global climate changes and unpredictable human activity in the form of arsons, military actions, etc., the number of fires in forest areas, industrial and residential facilities is increasing. Open sources of numerical weather forecast data make it possible to create modern meteorological support for modeling of atmospheric transport and deposition of pollutants and assessment of secondary environmental pollution using the LEDI-WRF software complex.
INVESTIGATING EFL VOCATIONAL HIGH SCHOOL STUDENTS’ SPEAKING PERCEPTION THROUGH INSTAGRAM VLOG
Authors: Krisdianata Yoannes Yuka , Ena Ouda Teda
Published: January 2023

The growth of technology in industry 4.0 was really fast and unimagined. The development also happened in the education field. The use of technology was helping teachers and students to develop their competencies. This study was conducted to investigate vocational high school students’ views of speaking through the use of Instagram vlogs in English courses. Thirty-two students’ perceptions toward the use of Instagram vlogs in learning English speaking skills were studied. The result was presented in the form of descriptive analysis using the mean and percentages. Moreover, there were three open-ended questions to give further information on students’ perspectives on learning English speaking skills through Instagram vlogs. The result indicated that Instagram vlog helped students to learn English better, improve their vocabulary, and widen their knowledge.
DEVELOPING CTL-BASED AUTHENTIC READING MATERIALS FOR STUDENTS OF MINING ENGINEERING STUDY PROGRAM AT POLITEKNIK NEGERI KETAPANG
Authors: Mastura Syarifah , Y Y Gatot Sutapa , Ikhsanudin Ikhsanudin
Published: January 2023

This study aimed to design an authentic reading material for students of Politeknik Negeri Ketapang Program Studi Teknik Pertambangan. The goal was to design teaching material thus the students understand the text being read if the content is close to the students’ environment. The content of the product was based on the instructional objective mentioned on the syllabus. Each unit of the learning material design discusses different topics by implementing the components of Contextual Teaching and Learning (CTL). The components of Contextual Teaching and Learning were divided into three main activities, warm-up (pre-activity), whilst activity, and post activity). The participants of the research were the second semester students of Mining Engineering study program, consist of 43 students. The result of this study was described qualitatively. The results indicated that the materials were already effective and practical, it covered the students target language and the field of study, understandable and interesting. Lecturers and students can use this material easily, it can increase the students’ interest (practicalities). The material design provided new learning content, set with students’ interest, and provided the students with the clear target in learning (effectiveness).
TEACHERS’ PERCEPTION OF PEERAGOGY IN ONLINE LEARNING DURING THE COVID-19 PANDEMIC
Authors: Prasetya Eska Perdana , Nuraeni Nuraeni , Shabir M
Published: January 2023

This covid 19 pandemic has made all life arrangements drastically change, not to mention the world of education, to avoid the increasingly widespread spread of the corona virus, it was changed from face-to-face learning in class to face-to-face or online learning using the zoom or goggle meet application. This research is a digital ethnography research, method or strategy in research to uncover a particular case. The research is oriented to the perception of teachers in learning using peeragogy strategies in online learning during the covid 19 pandemic. Perception is the experience of objects, events, or relationships obtained by inferring information and interpreting messages. Some results found that peeragogy can be applied in online learning because it makes students active, can be very good for honing children's activities in online learning, used to make students bring out latent abilities, and in groups can create a sense of responsibility. However, in online learning, various shortcomings can also be found, such as network problems, students who do not have gadgets and quotas.
DEVELOPING A PICTURE BOOK OF LOCAL FOLKTALES TO FACILITATE READING LITERACY FOR THE 8TH GRADE STUDENTS OF SMP ANAK NEGERI SANGGAU
Authors: Fraseda Evander , Susilawati Endang , Ikhsanudin Ikhsanudin , Bunau Eusabinus , Surmiyati Surmiyati
Published: January 2023

This study aimed to develop local folktales content for junior high school students based on local folktales from the Sanggau regency. To achieve the aim, this research was done by focusing on knowing what kind of a picture book was developed, how a picture book was done, and how appropriate the product was. The book was to facilitate class VIII students in reading literacy programs. This research used Design and Development by Branch. There were 20 students in the eighth grade and an English teacher of SMP Anak Negeri Sanggau as the objects. Design and development based on ADDIE consist of analysis, design, and development. The data collection of this research was done through interviews, questionnaires, and documentation. The findings of this study revealed the needs analysis at the student level, product needs, product topics, and product design. Thus, it was found that the product was appropriate for the students through the validations.
Sonographic visibility of the UltraCorTM TwirlTM tissue marker
Authors: Lee Shu Yi Sonia , Win Thida , Lee Yien Sien , Teo Sze Yiun
Published: January 2023

BACKGROUND: Tissue markers are inserted into the breast after percutaneous biopsy to mark the site of the lesion to facilitate potential re-localisation. Tissue markers are increasingly developed with improved sonographic visibility due to benefits conferred by ultrasound-guided localisation. OBJECTIVES: We aim to study the sonographic visibility of the recently-introduced UltracorTM TwirlTM tissue marker and feasibility of its pre-operative localisation under ultrasound guidance. METHODS: All patients who underwent insertion of the UltracorTM TwirlTM tissue marker in our institution from July 2017 to December 2018 were reviewed. Retrospective data including sonographic visibility, evidence of migration and rate of successful surgical excision were collected. RESULTS: All tissue markers were visible on subsequent ultrasound with 198 (85.0%) well-visualised with high degree of confidence while 35 (15.0%) were moderately well-visualised with moderate level of confidence. None of the tissue markers were poorly visualised and none demonstrated migration. No statistical difference in sonographic visibility is seen based on interval duration between deployment and subsequent ultrasound assessment or depth of tissue marker. CONCLUSION: UltracorTM TwirlTM demonstrates consistent sonographic visibility, identifiable with a high or moderate level of confidence with no associated migration. Its use in pre-operative localisation with ultrasound guidance is therefore both reliable and feasible.
Role of gene signature regulation in tumor immune microenvironment on the mechanism of uveal melanoma metastasis
Authors: Shi Kai , Tang Jiatian , Yuan Lingyan , Zhou Shengwen , Ran Wei , Wang Zhiming
Published: January 2023

BACKGROUND: Uveal melanoma (UM) is a rare but deadly cancer. The main cause of death from UM is liver metastasis. Though the metastasis mechanism remains unclear, it is closely related to the immune microenvironment and gene expression. OBJECTIVE: This study aimed to identify the prognostic genes in primary and metastatic UM and their relationship with the immune microenvironment. METHODS: Primary and metastatic UM data from the GEO database included GSE22138 and GSE44295 datasets. Kaplan-Meier analysis, Cox regression models, and ROC analysis were applied to screen genes in GSE22138. TIMER2.0 was employed to analyze the immune microenvironment from gene expression. Prognostic immune gene correlation was tested by Spearman. The results were validated in the independent dataset of cohort GSE44295. RESULTS: Metastasis and primary differential gene analysis showed 107 significantly different genes associated with prognosis, and 11 of them were immune-related. ROC analysis demonstrated that our signature was predictive for UM prognosis (AUC > 0.8). Neutrophil and myeloid dendritic cells were closely associated with metastasis with scores that significantly divided patients into high-risk and low-risk groups (log-rank p< 0.05). Of these 11 genes, FABP5 and SHC4 were significantly associated with neutrophils in metastatic tumors, while ROBO1 expression was significantly correlated with myeloid dendritic cells in the primary tumors. CONCLUSIONS: The present study constructed an 11-gene signature and established a model for risk stratification and prediction of overall survival in metastatic UM. Since FABP5 and SHC4 are related to neutrophil infiltration in metastatic UM, FABP5 and neutrophil regulation might be crucial in metastatic UM.
Resource optimization using predictive virtual machine consolidation approach in cloud environment
Authors: Garg Vaneet , Jindal Balkrishan
Published: January 2023

The Proliferation of on-demand usage-based IT services, as well as the diverse range of cloud users, have led to the establishment of energy-hungry hefty cloud data centers. Therefore, cloud service providers are striving to reduce energy consumption for cost-saving and environmental sustainability issues of data centers. In this direction, Virtual Machine (VM) consolidated is a widely used approach to optimize hardware resources at cost of performance degradation due to unnecessary migrations. Hence, the motivation of the proposed approach is to minimize energy consumption while maintaining the performance of cloud data centers. This leads to a reduction in the overall cost and an increase in the reliability of cloud service providers. To achieve this goal Predictive Virtual Machine Consolidation (PVMC) algorithm is proposed using the exponential smoothing moving average (ESMA) method. In the proposed algorithm, the ratio of deviation to utilization is calculated for VM selection and placement. migrating the high CPU using VMs or we can restrict steady resource-consuming VMs from migration. The outcomes of the proposed algorithm are validated on computer-based simulation under a dynamic workload and a variable number of VMs (1–290). The experimental results show an improvement in the mean threshing index (40%, 45%) and instruction energy ratio (15%, 17%) over the existing policies. Hence, the proposed algorithm could be used in real-world data centers for reducing energy consumption while maintaining low service level agreement violations.
Research on college students’ psychological crisis intervention based on web crawler technology
Authors: Liang Fu , Wang Longzong , Lai Lianfeng
Published: January 2023

Information technology brings popularity of the Internet, which broadens college students’ knowledge. Unexpectedly, the large amounts of information has a tremendous effect on the psychological ideology of college students who are lack of social experiences. This paper discusses how to better apply web crawler technology to analyze the potential risks of college students’ psychological crisis in the Internet environment. It is quite necessary for us to give full play to the initiative of ideological and political education in colleges and universities so as to prevent some negative and non-positive information and ideas from infiltrating and eroding students. Moreover, we should also provide a better guidance on students’ positive energy behavior, by creating an atmosphere, formulating measures, strengthening intervention as well as other mental health education methods.
Transformer winding deformation accompanied by magnetic flux leakage field distribution variation and its diagnostic analysis of deformation degree
Authors: Liu Hongliang , Gao Shuguo , Sun Lu , Tian Yuan
Published: January 2023

During the transformer winding deformation process, the leakage magnetic field around the winding will change accordingly. Therefore, it is an effective method to monitor and track the change of the leakage magnetic field and then analyze and judge the state of the transformer. This paper firstly uses Comsol Multiphysics software to establish a 110 kV transformer electromagnetic simulation calculation model. Based on the simulation results of magnetic leakage distribution, an installation plan for the internal magnetic leakage sensor of a 110 kV true transformer is determined. The measurement results of the true single short-circuit test under different working conditions verify the accuracy of the simulation model. Subsequently, a number of B-phase high-centered three-phase short circuit (H-M B) true type tests were carried out, and the relationship between the magnetic leakage distribution characteristics and the impedance change rate after each impact was analyzed. The results show that before the transformer is seriously deformed due to multiple short circuit shocks, the sensitivity of the impedance change rate to the winding deformation is low, and the first five shocks only increase from 0.11% to 0.39%. However, the difference ratio between the simulation value and the test value of magnetic flux leakage (MFL) has obvious changes in each small deformation. BX3 increases from 1.77% to 5.62%, and BX4 increases from 2.08% to 6.55%. The difference ratio of four shocks before winding deformation is more than 6%. Therefore, by monitoring the flux leakage magnetic induction intensity, when the difference ratio is greater than 6%, strengthen the vigilance, which can provide a certain basis for winding monitoring before serious deformation.
Research on simulation and detection of space electric field distribution of deteriorated insulators in three-phase over-head transmission lines
Authors: Jia Jun , Wang Maofei , Dai Yongdong , Zhang Haoling , Gao Song , Wang Shenyu
Published: January 2023

Operation accidents caused by deteriorated insulators occur from time to time, which poses a direct threat to the safe and stable operation of transmission lines. Much research has been done at home and abroad on the degradation mechanism of deteriorated insulators, the electric field distribution characteristics of insulator strings and the influence of deteriorated insulators on the space electric field, but there is little research on the influence of three-phase electrification on the space electric field of insulator strings. Therefore, this paper studies the simulation and detection of electric field distribution of deteriorated insulators in three-phase transmission lines. First, the difference between three-phase electrification and single-phase electrification on the space electric field of insulator strings is simulated and analyzed, and the influence of deteriorated insulators on the space electric field distribution of insulator strings under three-phase electrification is studied. Second, based on simulation results, a detection method for deteriorated insulators in three-phase overhead trans-mission lines is proposed, and a non-contact space electric field measurement device based on Unmanned Aerial Vehicle (UAV) is developed. Finally, a Unmanned Aerial Vehicle inspection system is used to test the transmission lines in combination with an electric power department, and the simulation results and the effectiveness of the proposed detection method are verified. Results show the electric field distribution of insulator strings is obviously different between three-phase electrification and single-phase electrification, and when the detection distance is 300 mm, the proposed detection method and device can effectively identify deteriorated insulators in three-phase transmission lines.
Similarity attack: An adversarial attack game for image classification based on deep learning
Authors: Tian Xuejun , Tian Xinyuan , Pan Bingqin
Published: January 2023

In order to allow users to incorrectly identify images by manipulating them using deep neural networks, this paper analyses the shortcomings of deep learning for image classification. It also develops a game that uses this technique. In the game, players can select one of their preferred product categories, causing the model to classify other product categories incorrectly as the one they selected. The goal of this game is to demonstrate to players the limitations of AI. We evaluate these programs based on their overall effectiveness, user satisfaction, and achievement of their objectives. The results show that this program is a successful method for arousing curiosity and stimulating thought. They can learn to appreciate the limitations of AI and the need to prioritize AI security in their daily activities.
Prediction of engineering investment spillover effect based on neural network
Authors: Fan Wenguang
Published: January 2023

Engineering investment is the basic investment of the whole national economic development. When the project investor obtains its expected return, it may have other beneficial benefits for social organizations or people outside the subject, but the investor cannot obtain such benefits. Spillover usually occurs from three aspects: economy, technology and knowledge. The spillover effect of project investment usually brings obvious spillover effect, which has positive benefits to society, but may also produce unfavorable factors. Therefore, it is necessary to predict the project investment spillover. When it is predicted that the investment spillover will have more favorable benefits, the preparation of relevant investment funds can be started, and when it is predicted that there will be unfavorable spillover benefits, the investment in related engineering projects will be terminated. Project investment spillover effects usually have specific rules. On the basis of summarizing and analyzing historical project investment spillover effects, the specific situation of its spillover effects can be obtained, and then the rules can be learned in combination with specific algorithms to complete the project investment spillover effects. predict. The purpose of this paper is to provide investors and institutions with a valuable investment forecasting reference method, combined with the relevant theories of the investment value of engineering market-oriented enterprises, using quantitative analysis methods and quantitative analysis methods, so as to provide an investment based on data and algorithms. The spillover value forecast method supports and promotes the development and construction of national key projects. Based on the completion of the entire prediction model, this paper uses the particle swarm optimization method of the deep neural network model process studied in this paper, and based on the relevant data of 284 historical engineering investment overflow cases, the algorithm is trained and output, and then the investment overflow of each project is obtained. The relative score of the predictions, and analyzing this overflow prediction. Through the obtained comprehensive prediction score and according to the result analysis. Corresponding conclusions and future development directions are put forward to provide theoretical guidance for investors and institutions to invest in investment direction and estimate investment spillover effects.