bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of Areas and Prospects for the Use of Agrobiomass for Energy Production in Ukraine
Authors:   Institute of Engineering Thatmophysics of NAS of Ukraine, Zheliezna T.
Published: December 2020

Purpose of the study is to assess the current and prospective energy potential of agribiomass (agricultural residues and energy crops) in Ukraine, to determine its main components and the most effective areas of their use. Methods. The assessment of the current potential of agribiomass is performed using official statistics on crop production in Ukraine. Based on these data, the total amount of crop residues formed and their share available for energy needs is determined. When assessing the potential of energy crops, it is assumed that they are grown on 2 million hectares of unused agricultural land, the total area of which is up to 4 million hectares in Ukraine. The study of the prospective potential of biomass is performed for 2050, based on key growth factors, such as increasing yield of crops, especially cereals; doubling the area under energy crops and increasing their yields, etc. Results of the assessment show that according to 2018 data, the total bioenergy potential in Ukraine is more than 23 Mtoe (the economic potential). Its largest components are agricultural residues (44%) and energy crops (32%). Expert estimates suggest that by 2050, the biomass potential could increase to more than 47.5 Mtoe/yr, in other words almost to double. Forecasting the structure and directions of use of biomass potential by 2050 shows that about 20 Mtoe of biomass/biofuels of the following types will be consumed for energy: wood biomass, primary and secondary agricultural residues, energy crops, biogas/biomethane from different types of raw materials, liquid biofuels (biodiesel, bioethanol). Conclusions. Areas of use of biomass/biofuels include the production of heat and electricity from solid biofuels, obtaining of biogas and biomethane, as well as the production of motor biofuels (biomethane, biodiesel, bioethanol). In the near future, it is considered necessary to develop a long-term strategy for the development of bioenergy in Ukraine, taking into account results of the study. In turn, the basic figures of the bioenergy development strategy can be used for the elaboration of the updated Energy Strategy of Ukraine until 2050.
The Blue Eyes vs Untrue Ideas: A Postcolonial Critique of Pecola’s Persistence to Fit in the White American Society in The Bluest Eye
Authors: Aminur Rashid A.K.M.
Published: December 2020

Set in Ohio, the north side of America, the tone in The Bluest Eye features post-colonial treatment to its central character, Pecola Breedlove. This paper discusses how she experiences a sense of being completely ruined after she is raped by her father, and her quest for the blue eyes meets merely untrue ideas. The plot, as described in the paper, provides a post-colonial background of two racial conflicts regarding the blackness, and the white beauty in America. This paper critically draws on the idea of physical whiteness as being the only American standard of beauty while Pecola’s physical ugliness draws on how black people get seriously marginalized for their blackness of their own bodies. The storyline progresses to show how Pecola‟s tragedy becomes the central theme regarding the issue of seeing, and of being seen. The paper presents a binary opposite through the portrayal of black Pecola on one side, and Mary Janes, or Shirley Temple on the other. Consequently, the conflicts meet hardly any positive solution. Pecola receives exactly the behavior that the black slaves were used to receive from the whites in the past. From the historical perspective, The United States experienced inequality between the whites, and the blacks at that time when Morrison wrote this novel. She saw that the black race got segregated from the whites in the case of superiority. Racial tension also influenced the children in the schools, where the black ones were ridiculed there. However, the acceptance of the fair skin, actually, tormented black people both psychologically, and left a scar on them like Pecola Breedlove experiences.
الجهود العلميّة للسيّد محمد عميم الإحسان في الدراسات التفسيريّة
Authors: غلام الرحمن محمد , نور شهباني بنت سيّد بدين شريفة
Published: December 2020

يعدُّ السيد محمد عميم الإحسان (المتوفى: 1395هـ/1974م) من الهداة الأعلام المبرزين في شبه القارّة الهندية في القرن التاسع عشر الميلاديّ. وله أثر عظيم ودور كبير في نشر العلوم الشرعية المختلفة في جمهوريّة بنغلاديش الشعبيّة. وهذا البحث يهدف إلى الوقوف على الحياة العلمية والعملية للسيّد محمد عميم الإحسان مع التعرّف على أبرز جهوده التي بذلها في ميادين العلوم الشرعية المختلفة عامّة، وفي الدراسات التفسيريّة خاصّة. وقد توصّل البحث إلى كون السيّد محمد عميم الإحسان عالماً كبيراً، ومفسّراً دقيقاً، وخادماً مخلصاً للقرآن الكريم والسنّة النبويّة في ضوء عقيدة أهل السنّة والجماعة.
التعددیة الحزبیة في الدولة الإسلامية
Authors: حنیف محمدولي
Published: December 2020

تناولت هذه الدراسة موضوع التعددیة الحزبیة في الدولة الإسلامیة، حيث وقفت على ماهیتها وتحدثت عن مدى مشروعيتها والرأي الشرعي في وجودها داخل الدولة الإسلامية، ومن ثم بينت أدلة من أيد وجودها وكذلك من عارضها، وبعد ذلك وقفت على الرأي الراجح والمتمثل بمشروعية وجودها وفق ضوابط لا بد من الأخذ بها واعتبارها، وقد خلصت الدراسة أنه یلحظ ترتب مصالح عامة تفوق المفاسد الواقعة من وجودها وبأن القيادة الواعية قادرة على تجنب هذه المفاسد إذا كان الهدف تغليب المصلحة العامة على المصلحة الخاصة.
Desafios da Educação Infantil
Authors: Lopes Maura Corcini , Loureiro Carine Bueira
Published: December 2020

Entrevista com Maria Teresa Suárez Vaca
Diferenças culturais, governamentalidade neoliberal e algorítmica
Authors: Lopes Maura Corcini , Loureiro Carine Bueira
Published: December 2020

Entrevista com Marco Antonio Jiménez
PROFIL MAHASISWA JURUSAN KOMPUTER PADA KETERAMPILAN BERPIKIR KRITIS DAN KREATIF
Authors: Suryani Karmila , Sukardi Sukardi , Khairudin Khairudin , Sasmita Dewi , Rahmadani Ade Fitri
Published: December 2020

Abstrak

Penelitian bertujuan untuk mendeskripsikan profil keterampilan berpikir kritis dan kreatif mahasiswa jurusan komputer di Kota Padang. Metode penelitian yang digunakan adalah penelitian deskriptif. Data dikumpulkan melalui kuisioner yang dibuat menggunakan google form kemudian disebarkan kepada responden penelitian yang berjumlah 115 mahaiswa. Teknik analisis data yang digunakan yaitu analisis deskriptif dengan menggunakan persentase per indikator. Hasil penelitian menunjukkan bahwa keterampilan berpikir kritis mahasiswa tergolong rendah pada indikator memberikan penjelasan lebih lanjut dan menarik kesimpulan, serta keterampilan berpikir kreatif untuk berpikir secara lancar dan orisinil mahasiswa masih rendah.

 

Abstract

The research aimed to describe the critical and creative thinking skills profiles of students majoring in computer in the city of Padang. The research method used descriptive research. Data were collected through a questionnaire made using google form and then distributed to 115 respondents. The data analysis technique used descriptive analysis using percentages per indicator. The results showed that the students' critical thinking skills were low on the indicators of providing further explanation and drawing conclusions, and the students' creative thinking skills to think fluently and originally were still low.
New data on Roxania Leach, 1847 (Gastropoda: Heterobranchia) from the Sea of Marmara based on materials of the Russian expedition in 1894
Authors: Chaban E.M.
Published: December 2020

Heterobranch specimens of the genus Roxania collected during the Russian expedition (1894) aboard the Turkish steamship Selânik to the Sea of Marmara are found in the collection of the Zoological Institute of the Russian Academy of Sciences (Saint Petersburg). One of the aims of the expedition was investigation of the fauna of the Sea of Marmara including its deepest zone to compare with the Black Sea. In 1896 A.A. Ostroumoff published a report on the expedition. Heterobranch mollusks of the genus Roxania are represented in our material by two lots from the first voyage of the expedition to the archipelago of the Prince Islands. The specimens were identified by K.O. Milaschewitsch as Roxania utriculus (Brocchi, 1814) and “Cryptaxis imperforatus n. sp.”, but a description of the last taxon has not been published. In this study, the specimens labeled by Milachewitch as Cryptaxis imperforatus n. sp. were identified as belonging to Roxania monterosatoi Dautzenberg et H. Fischer, 1896. The species is recorded for the Sea of Marmara for the first time; the description and illustrations of the species are presented. Most species of gastropod mollusks collected during the expedition including all samples of Roxania were represented by empty shells. Taxonomical value of the columella morphology in Roxania species is discussed. Based on this character the species of the genus can be divided into two groups: R. utriculus species group (mouth channeled) and R. monterosatoi species group (mouth without a channel). Morphological and molecular phylogenetic investigations are needed to clarify the status of these two groups.
EXPORT-IMPORT POTENTIAL OF THE MOTOR BOAT MARKET OF UKRAINE
Authors: Svitlana GALKO , Valentyna OSIIEVSKA
Published: December 2020

Background. The economic crisis caused by the COVID-19 pandemic has revea­led most popular products in the global market among consumers, in particular those for spending leisure time alone. Among them, surprisingly, motor boats were found. In Ukraine, increasing the production of certain types of watercraft may be a chance to save the entire shipbuilding industry. The aim of the article is to analyse the state and the structure of the world and domes­tic markets of motor boats in order to establish possible directions for the development of the export potential of Ukraine. Materials and methods. The methods of logical analysis and generalization of scientific literature, statistical data on the export and import of goods were used; the tools of market analysis of the International Trade Centre (ITC) were applied. Results. The state of the motor boats world market is analysed according to im­port data. The main consumers of these motor boats and trends of theirs changes in 2005–2019 were studied. The data on the motor boats import to Ukraine is provided. The count­ries-exporters of motor boats are considered and their future potential is determined. The data on the motor boats export from Ukraine is given. The level of tariff protection by diffe­rent countries of the world in relation to motor boats from Ukraine is assessed. Conclusion. When planning a strategy for the development of motor boats ex­port, Ukrainian enterprises should take into account that most of the importing countries of motor boats do not impose tariff protection in relation to Ukraine, and where it is pre­sent at a sufficiently high level, there is no significant consumption of motor boats. For the development of a trade partnership in the direction of exporting motor boats, Ukraine should choose the Cayman Islands, the Netherlands, Malta, the United States of America, the British Virgin Islands, France, Gibraltar, Spain, Canada and the Seychelles –the largest consumers of motor boats. Ukraine needs to pay special attention to the Netherlands, Italy and Germany – countries that will hold the leading exporters position of motor boats for a long time. Cooperation with manufacturers of these countries in the global supply chain of motor boats to the world market could be very useful not only for motor boat manufacturers, but also for manufacturers of individual parts and accessoriesfor motor boats.
INCREASING THE TECHNOLOGICAL POTEN­TIAL OF GLUTEN-FREE FLOUR RAW MATERIALS
Authors: Tetiana YUDINA , Roman ROMANENKO , Olha BEZRUCHENKO
Published: December 2020

Background. Gluten-free types of flour (corn, rice) with the absence of gluten proteins, show special abilities for moisture absorption, which differ from those that are characteristic for wheat flour. Researches in this direction are fragmentary. Consequently, the aim of the article is to study the influence of granulometric characteristics on the moisture-absorbing capacity (MAC) and to determine methods for increasing the technological potential of gluten-free flour raw materials. Materials and methods. The corn flour and rice flour were used. Micropho­to­graphs were taken with the CL PC camera 4.5 digital microscope. The determination of gra­nulometric composition of flour was carried out by the average mass diameter method using Cooling Tech 4.5 software. The moisture absorption capacity of flour was deter­mi­ned by a Brabender farinograph, Germany. Result. The particle size of rice flour is determined by the "dark-field" method and corn flour by the "light-field" method. The obtained results show that rice flour is characterized by a relative uniformity in particle size and a high degree of dispersion, and as a result, has a good moisture-absorbing capacity (78.4 %). In corn flour, particles with average diameters from 100 to 250 microns (68.3 %) have the highest specific weight, the content of relatively large particles (more than 300 microns) is 11.2 %, and in the total area of particles 26.9 ± 4.2 %, which negatively affects the moisture-absorbing capa­city of flour and the consumer properties of ready-made cupcakes. To ensure the uniformity of particle sizes of the dispersed phase (a mixture of corn and rice flour) in the developed technology of gluten-free cupcakes, it is proposed to use a method of re-grin­ding, the feasibility of which is confirmed by the results of a study of the dispersed distribution of corn flour particles after re-grinding. Conclusion. It is proved that one of the factors that significantly affect the mois­ture-absorbing capacity of gluten-free flour, the speed of dough formation, consistency, and consumer properties of ready-made gluten-free cupcakes is the granulometric com­position of flour. The method of re-grinding corn flour is proposed in the development of gluten-free cupcake technology to ensure the uniformity of particle sizes of a mixture of corn and rice flour.
DIGITALIZATION OF BUSINESS UNDER GLOBAL CHALLENGES
Authors: Oksana KONDRATIUK , Iryna STOIANENKO
Published: December 2020

The articlefocuses attention on prospects for the development of Ukraine’s economy taking into account the potential of social processes and business digitalization. We accentuated the global tendencies of economic relations digitalization, which create progressive forms and methods of business processes for small and medium enterprises. The article determined priorities of development for small and medium businesses of Ukraine under the conditions of the pandemic, world economic crisis, and digital transformation of eco­nomic relations.
FOREIGN TRADE OF UKRAINE IN THE CONDITIONS OF THE COVID-19 PANDEMIC
Authors: Olha DIACHENKO , Olena HONCHARENKO
Published: December 2020

Background. The COVID-19 pandemic led to problems in all sectors of the global economy. The world's leading companies are focused on how to adapt their activities to quarantine measures, save jobs and minimize losses due to the recession. There is no doubt that the pandemic will have far-reaching negative consequences for the world economy, including Ukraine. The economic consequences predicting of an outbreak of the COVID-19 virus is a difficult task due to uncertainty and lack of reliable information. The aim of the article is to study the development trends of Ukraine's foreign trade in goods in the context of the COVID-19 pandemic and to analyze the measures taken by countries around the world to stimulate it under these conditions. Materials and methods. The information base of the article is presented by analytical reports of international and national organizations, statistical data, forecasts of experts. The research was conducted using general scientific methods: system analysis, synthesis, theoretical generalization and comparison. Results. Trends in the development of Ukraine's foreign trade in goods in the context of the COVID-19 pandemic were studied. Groups of countries that have introduced restrictive measures in trade policy were identified. The complex of measures taken by the countries of the world to stimulate the economy in the conditions of a coronavirus pandemic was analyzed. Systemic and crisis obstacles in the development of Ukraine's foreign trade were highlighted. Measures to mitigate the effects of the pandemic were identified in trade and economic cooperation of Ukraine in the international arena. Conclusion. The economic damage from the pandemic has not yet been estimated due to the further spread of the virus. Research of measures taken by countries around the world to stimulate the economy in the context of the COVID-19 pandemic have shown that developed countries are trying to restore its economies, primarily through the mobilization of financial resources, the introduction of large-scale programs to support producers and tax breaks. It was found that only some developing countries introduce temporary foreign trade restrictions to avoid shortages in the domestic market. Most other countries use economic incentives to the leveling effects of the pandemic. Ukraine has implemented economic measures against the pandemic and temporary trade restrictions. COVID-19 has a neutral effect on exports of goods, but together with other global trends has led to a reduction of critical imports.The existence of systemic and crisis gaps in Ukraine's trade policy requires immediate action in the field of trade and economic cooperation with the countries of the world.
Reconnaître et analyser les violences obstétricales, une démarche pertinente d’évaluation et d’amélioration des pratiques
Authors: Evrard A.
Published: December 2020

Les récits des femmes concernant des situations de violences obstétricales ont souvent bouleversé les professionnels, avant que ce thème ne fasse l’objet de communications et d’études. Toutefois, ces témoignages ne sont que très rarement utilisés comme support de réflexion au sein des services d’obstétrique. Nous proposons d’en analyser le contenu afin de comprendre en quoi ils fournissent une matière susceptible d’enrichir l’analyse des pratiques professionnelles. Nous proposons qu’ils puissent faire l’objet d’un travail élaboré, selon une méthodologie inspirée des outils déjà connus (CREX ou RMM), et défendons le développement de « RMM de vécu ».
Violence obstétricale
Authors: Yamgnane A.
Published: December 2020

Le débat au sujet des violences obstétricales a surgi dans l’espace public et a suscité l’hostilité du corps médical. Pourtant, certains d’entre eux se sont attelés à écouter les revendications des femmes, les ont relus à la lumière des très nombreux travaux et expérimentations connus sur ce thème du « traumatisme obstétrical ». La formation des professionnels et l’état d’esprit de travail en périnatalité doivent évoluer. L’information indispensable à toute forme d’anticipation pour les femmes et les familles doit être systématisée. Les consultations de suivi de grossesse doivent devenir des espaces d’alliance thérapeutique, où les soins font sens pour les femmes. C’est la condition sine qua non pour que le sentiment de sécurité gagne les parents et les professionnels. Cette sécurité se prépare dès la conception, car indispensable à une adaptation de tous et de chacun, indispensable à la mise en œuvre des processus d’attachement chez le petit humain.
Pregnancy-Associated Osteoporosis Presented with Femoral Neck Fracture: A Case Report and Literature Review
Authors: Faraji Azam , Shomali Zahra , Yoosefi Sedigeh
Published: December 2020

Background: Pregnancy-associated osteoporosis (PAO) is a rare condition characterized by reduced bone mineral density during the third trimester or lactation. Multiple risk factors, such as genetic, sedentariness, and 25-hydroxy vitamin D deficiency, are associated with PAO. In the majority of cases, PAO is presented with a compression fracture in vertebras, but in our case, it presented with a fracture of the femoral neck. Case Report: A 29-year-old, gravida one woman, developed right hip joint pain during the gestational age 34 weeks who referred to our clinic. Despite conservative management, the pain intensified. The patient delivered a healthy neonate in the 38th week of gestation and afterward underwent magnetic resonance imaging of the pelvic, revealing a bruised bone in the femoral neck. Since she had developed a femoral neck fracture during the postpartum period, she underwent open reduction and fixation of the femoral neck. Dual-energy X-ray absorptiometry (DEXA) revealed osteoporosis of the vertebras and femoral neck. She received calcium supplements and alendronate, and the pain was relieved. On 2-year and 4-year follow-up, she was found to be osteopenic with significant improvement in DEXA indices. Conclusion: PAO is a rare condition among young women. This condition should be kept in mind when hip joint or back pain is encountered during pregnancy. [GMJ.2020;9:e1750]
Rivaroxaban Experience at Tertiary Care Centre in Saudi Arabia:A Retrospective Observational Study
Authors: Riazuddin Muhammad , Ahmed Mpharm Mohamed , Butt Muhammad Imran , Abufarhaneh Muhammad , Khan Shahid Masud , Emadi Omar , Alkasab Muhammad , Alsudairy Haifa Fahad , Alshammari Khalid , Sheikh Aamir , Alrashed Abdulaziz
Published: December 2020

Background: Atrial fibrillation (AF) and Venous Thromboembolism (VTE) are significant causes of morbidity and mortality. Direct oral anticoagulants (DOACs) are as effective as vitamin K antagonists (VKAs) with a propensity to cause less major bleeding. This study aimed to assess the safety and effectiveness of rivaroxaban in routine clinical practice in a large tertiary referral center in Saudi Arabia. Methods and Materials: In this study, patients who received rivaroxaban at a tertiary referral hospital were included in this study. All adverse events were recorded, including major bleeding, non-major bleeding events, symptomatic thromboembolic events (deep vein thrombosis, pulmonary embolism) and all-cause death. Results: A total of 509 patients were prescribed rivaroxaban during the study period. The most common indication for rivaroxaban was non-valvular AF (65.3%) and VTE (34.7%). The mean age was 60.4 ± 16.4 years, and 50.8% were female. The median CHA2DS2-Vasc score was 2.1 in patients on rivaroxaban for non-valvular AF. Bleeding occurred in 72 (14.1%) patients, of which 20 (3.9%) had major bleeds. Thrombosis events occurred in 13 (2.5%) patients in the overall cohort. Fourteen (2.7%) patients died during the study, including a case of fatal bleeding secondary to rivaroxaban. Conclusion: This study describes the use of rivaroxaban in a broad patient population in clinical practice in the Middle East. The overall bleeding and thrombosis rates in this study were comparable to those seen in major clinical trials.  [GMJ.2020;9:e1882] DOI:10.31661/gmj.v9i0.1882
The Mahakala cult in Tibet: some aspects of its history
Authors: Batomunkueva S. R.
Published: December 2020

The article offers a research on Mahakala cult in Tibet. Mahakala is a deity common to Hinduism and Buddhism. It appears also as protector deity known as dharmapala – the Protector of Buddhist Doctrine. The author addresses some issues regarding the genesis of this cult, namely materials and historical facts about how it did appear in the Tibetan Buddhist pantheon, and how it did subsequently receive its further development and became popular inTibet. The author uses the already published scholarly works to illustrate some of the main forms of the deity manifestation and their functional aspects. She also draws attention to the ways of Mahakala teaching lineages and transmissions as well as religious practices, which did exist in the early stages of the cult formation. The article emphasizes the importance of the deity cult inTibet, as well as the prevalence of the Mahakala Six-Armed manifestation. This ancient and multifaceted cult was tightly connected with that of the deities in ancientIndia became firmly rooted in the Buddhist pantheon. Subsequently it gained significant popularity not only in the “Land ofSnows” but also in all other areas where the Tibetan Buddhism was spread.
Military Orientologist Schools in the Context of the Foreign and Military Policy of the Russian State in the Late 19th ‒ early 20th Centuries. [Review on:] Baskhanov M. K. A History of the Study of Eastern Languages in the Russian Imperial Army. Saint-Petersburg: Nestor-istoria, 2018. 632 p.
Authors: Bukharin M. D.
Published: December 2020

The territorial expansion of the Russian Empire in the 18th–19th cent. resulted in urgent need to study both the peoples of the newly acquired Eastern territories, which becameRussiaas well as and their neighbours. A special role in this process was played by the military servicemen who stationed on the borders. Since the second half of the 18th century in the Russian military schools was developed a system of teaching Oriental languages. In his recent monograph “The History of the Study of Oriental Languages in the Russian Imperial Army” (St. Petersburg: Nestor-Istoria; 2018) the author M. K. Baskhanov provides a detailed description of the history and teaching process in 24 Russian military schools where the cadettes were taught Oriental languages. M. K. Baskhanov outlines strengths and weaknesses of the teaching curricula, as well as the results gained by the Russian servicemen subject to this training. The author pays special attention to prospected plans in Orientalist training, which have never been implemented. The summary of M. K. Baskhanov’s research is that in spite of significant intellectual potential of the military specialists in Eastern countries their knowledge and experience were not used in full ‒ either in Imperial Russia or during the Soviet time. The monograph by M. K. Baskhanov is a remarkable piece of modern historical studies, which will be a reference book for many years to come for those who studyRussia’s foreign policy in 18th–20th cent.
Factors of formation and specific aspects of syncretic processes in Meroe religion
Authors: Kormysheva E. E.
Published: December 2020

The author explores specific manifestations of the phenomenon of syncretism in theMeroereligion, as well as the factors, which did significantly contribute to it. She traces these factors on a wide time scale starting from the early archaeological cultures of theNileValleyto the Hellenistic time. The main subject of research is the cult of the gods, as well as the myths and rituals, which did accompany worship. The article deals with concepts of ‘unity and multitude’, which were instrumental for creation of local concepts of Egyptian deities. According to the author, this was the beginning of syncretism. Both the subsequent adaptation and acculturation can be seen in rethinking and creating images that retained many primordial Egyptian features. The Meroe ‘friend or foe’ concept could be traced on specific forms of adaptation of ‘enemy’ images to the Meroitic culture and the subsequent perception of them as “own” or “local”. One can identify this process as “inversion”, which run in two directions: the “alien”, i.e. Egyptian gods in fullness of time became “own” gods inMeroe, the gods ofKush, in their turn became part of the Egyptian pantheon. The results of the process, which culminated in creation of a syncretic culture can be seen in emergence of new hitherto unknown deities, which were distinguished by combination of various Greek, Egyptian and Meroitic features. The Hellenistic features ofMeroedeities came to this culture viaEgypt. The formation of the syncreticMeroereligion up to the beginning of the Christian era was marked by the mutual influence and coexistence of “borrowed” deities as well as those, which came into being in course of the process of “borrowing”. The phenomenon of syncretism was spread through many aspects of religious life covering not just individual images of deities or various ritual practices, but also the whole theological system ofEgypt. In the history of the world religions this was the first recorded spread of religious teaching beyond its historical borders and the subsequent adaptation to an “alien”, Sudanese culture.
UPAYA MENINGKATKAN HASIL BELAJAR PESERTA DIDIK MELALUI MODEL PROBLEM BASED LEARNING DI MASA PANDEMI
Authors: Mayawati Mayawati , Mulbasari Anggria Septiani , Nurjannah Nurjannah
Published: December 2020

Kehadiran Covid-19 sangat mempengaruhi segala segi kehidupan hingga merambah ke dalam dunia pendidikan. Pola pembelajaran tatap muka dialihkan dengan memanfaatkan kecanggihan teknologi dengan belajar secara online. Ketidaksiapan sekolah dalam menghadapi perubahan yang mendadak, rendahnya penguasaan teknologi, keterbatasan sarana dan prasarana hingga jaringan internet, serta besaran biaya yang harus diperhitungkan merupakanÂ  beberapa faktor yang menghambat terlaksananya efektivitas pembelajaran secara daring. Tujuan penelitian ini untuk mengetahui peningkatan hasil belajar peserta didik dan kemampuan guru dalam mengelola pembelajaran secara daringÂ  pada pembelajaran matematika menggunakan model Problem Based Learning. Penelitian dilaksanakan pada bulan Oktober 2020. Penelitian dilakukan dengan menerapkan metode Penelitian Tindakan KelasÂ  yang meliputi perencanaan (planning), tindakan (acting), pengamatan (observing), dan refleksi (reflecting). Penelitian ini terdiri atas 2 siklus. Data dikumpulkan melalui observasi, tes, dan angket. Hasil penelitian ini adalah penerapan model Problem Based Learning (PBL) dapat meningkatkan hasil belajar peserta didik kelas XI MIPA 2 SMAN 1 Bunguran Timur pada materi matriks meski dilaksanakan secara virtual memanfaatkan whatsapp dan zoom. Peserta didik tampak antusias dalam menerima segala pola pembelajaran yang dilakukan. Meski di awal sempat sulit dikoordinasikan, namun seiring waktu semakin mampu untuk beradaptasi. Penyusunan perangkat dan ketepatan dalam mengalokasikan waktu, menjadi kunci dalam keberhasilan sebuah pembelajaran, apapun model pembelajaran yang digunakan.
Character of formation of secondary protective structures during operation of parts in friction
Authors:   Kharkiv Petro Vasylenko National Technical University of Agriculture, Romanchenko V.
Published: December 2020

The structure and nature of the formation of secondary protective structures during the operation of parts in an oxidizing environment are considered. It has been established that the stability of film coatings in operation depends on the material of the main part and the development of diffusion processes with the formation of various phases and their interactions. Based on comprehensive studies using the optical-mathematical method for the description of phases and their combinations, the development of diffusion processes during friction, the possibility of predicting the formation of more stable secondary protective films in the operation of parts to increase their operational stability is shown.
Reduction of oxides formation at surfact depositsitson of wear-resistant alloys
Authors:   State higher educational institution 'Priazovsky state technical university', Chigarev V , Logvinov Yu ,   Mariupol institute Interregional Academy of Personnel Management city of Mariupol
Published: December 2020

The article deals with the issues of reducing the content of harmful substances when surfacing alloyed wear-resistant alloys. Studies have been carried out to determine the possibility of reducing the formation of oxides during surfacing of high-alloy wear-resistant alloys of the sormite type using a closed filter-ventilation system, which ensures minimal losses of alloying elements during the formation of the deposited layer. The loss of alloying elements during surfacing is influenced by a number of metallurgical and technological factors, including the share of the base metal in the deposited, surfacing modes, oxidation processes during melting of the electrode material and in the melt of the weld pool when interacting with the surrounding gas environment. To reduce the oxygen content in the gas-air mixture formed during the surfacing process, special absorbent substances are used in a closed filtering and ventilation system, which reduce the course of oxidative processes with the formation of oxides of alloying elements. At the same time, the gas-air mixture is taken from the zone of arc burning and the weld pool, filtered through a system of special filters, in which solid and gaseous components of the welding aerosol are removed, after which the purified gas mixture is used as gas protection during surfacing. We used powder tapes containing a mechanical mixture of powder components and a complex-alloyed alloy in the core. A complex-alloyed alloy, an alloy previously melted in an induction furnace, containing the necessary alloying elements. Particles of the required sizes were obtained by hydrogranulation, which were then introduced into the core of a flux-cored tape. The indicated flux-cored strips provided the same chemical composition of one alloying system in the deposited layer. After surfacing, the chemical composition of the deposited metal was determined for the content of carbon, manganese, silicon, nickel. The use of a closed filtering and ventilation system makes it possible to reduce the formation of oxides of alloying elements, which requires the determination of specific parameters for each surfacing process. Creation and use of closed fil'tro vent system (CFVS), serve of the filtered air in area of surfacing and providing safe labour in the workplace of welder. It corresponds the international standard of ISO and norms of European Union. Therefore, to execute a requirement to impermissibility of hit of harmful questions in an atmosphere concordantly Kiotskomuo and to Parisian protocols.
Investigation of slippage and wear in rolling bearings of machines
Authors:   Khmelnitskyi National University, Dykha A. , Dytyniuk V. ,   Khmelnitskyi National University, Dykha M. ,   Khmelnitskyi National University
Published: December 2020

The purpose of this work was to study the processes of slipping and wear in the sliding bearings of machines. It is determined that slippage in bearings is the main cause of bearing parts failure according to the criterion of wear. Analytical relations for determining the amount of slip and sliding path in the bearing are presented. For experimental research of sliding in rolling bearings the test installation is designed. Experimental tests on the effect on load slip, sliding speed and lubrication conditions in the bearing were performed. The model of wear of rings of the sliding bearing on the basis of a solution of a wear contact problem is offered. The formulas for calculating wear and parameters of the wear model are obtained. The obtained results are recommended to evaluate the influence of design and technological factors on the durability of rolling bearings by the criterion of wear.
Theoretical and methodological features of creating reservoir models of hydrocarbon fields
Authors: Matkivskyi S. V.
Published: December 2020

To increase the efficiency of appraisal and development of hydrocarbon fields, the most effective technology is the integration of geological and field information into modern software systems for reservoir simulation, starting from the input of seismic data to field development planning based on a reservoir models. Building a three-dimensional geocellular models is an integral part of hydrocarbon reservoir management. After all, the reservoir model built to solve the main tasks of reservoir management such as: achieve the highest recovery and maximum economic effect. The modern level of software and the advances in computer processing power and graphics allows you to operate with big data, provides an opportunity for its systematization, statistical processing and detecting the basic laws between them. The availability of reliable data plays important role in the creation of a database for reservoir models. The input data for reservoir modelling of the fields, which were discovered in the 1960s, are the results of complex studies, characterized by insufficient accuracy and low quality. Lack of reliable and high-quality data brings significant uncertainty in all stages of modelling from volumetric estimation to the history match and forecasting. The necessity of using available geological and field information has led to the development of new methodological principles and approaches to reservoir modelling in conditions of limited initial information. According to the results of numerous studies, a significant number of methods have been developed, which are successfully used in the design of simulation models of hydrocarbon reservoirs of JSC “Ukrgazvydobuvannya”. Thanks to the use of new approaches to the building of 3D-models, high accuracy and reliability of the simulation results under such conditions is achieved.
La libre circulación de resoluciones en la UE en el caso de la sustracción internacional de menores
Authors: González Marimón María
Published: December 2020

El presente artículo aborda la regulación actual y futura del sector del reconocimiento y ejecución de resoluciones extranjeras en materia de sustracción internacional de menores en el ámbito de la Unión Europea. Materia específica que motivó la previsión de un régimen de eficacia extraterritorial de resoluciones judiciales distinguido – y privilegiado – al del régimen genérico de las resoluciones en materia de responsabilidad parental. Recientemente, el instrumento aplicable en la materia, el Reglamento 2201/2003 (Reglamento Bruselas II bis) ha sufrido un importante proceso de reforma que ha culminado con la aprobación de un nuevo Reglamento, el Reglamento 2019/1111. En este trabajo abordaremos el complejo entramado de fuentes en la materia, con la interacción tanto de fuentes de la UE como de Convenios internacionales, principalmente del Convenio de La Haya de 1980, analizando tanto el régimen actual como las modificaciones apuntadas. Con todo ello, se irán apuntando algunas de las tendencias actuales y futuras del tercer sector del Derecho Internacional privado en el proceso de construcción del espacio de libertad, seguridad y justicia de la UE.
Internalisasi Pendidikan Karakter Islami Anak Ditengah Pandemi Covid-19
Authors: Afrilia Hilda , Indriya Indriya
Published: December 2020

This research aims to find out how families play in the planting of Islamic character education in childrenduring the COVID-19 outbreak. The research method uses descriptive qualitative methods. While the datapurposive sampling techniques with questionnaire-assisted instruments from Google. The analysis of the dataused is qualitatively descriptive. The results show that with the government's policy of closing schools anddoing distance learning due to the COVID-19 pandemic, Islamic character education planting in childrenduring the COVID-19 pandemic is in desperate need of family roles. The role of the family is very importantbecause the family is the nearest neighborhood of the child and also the informal educational institution ofthe child early on, especially the parent who is the first madrassa for the child. to apply Islamic charactereducation is also needed efforts are made so that the character of Islami is attached to the child untiladulthood later that will be discussed in this research.
Perhitungan Beban Refrigerasi Terhadap Hasil Tangkapan Pada Km. Harapan Sri Jaya Juwana, Pati, Jawa Tengah
Authors: Mardiyono Mardiyono , Fadillah Hilman
Published: December 2020

Beban refrigerasi pada ruang pembekuan dan ruang palkah  di KM. Harapan Sri Jaya terdiri dari beban produk dan beban non produk. Pada ruang pembekuan, beban kalor yang harus ditanggung berasal dari beban produk, beban infiltrasi dan beban transmisi. Pada ruang palkah beban kalor yang harus ditanggung berasal dari beban infiltrasi, beban transmisi dan beban internal. Beban keseluruhan yang harus ditanggung oleh ruang pembekuan dan ruang palkah adalah penjumlahan dari beban di ruang pembekuan dan ruang palkah. Besarnya beban tersebut adalah 56 kW. Faktor keamanan dalam perhitungan beban kalor adalah sebesar 15% sehingga besarnya beban kalor yang ada di ruang pembekuan dan ruang palkah adalah sebesar  56 kW + ( 15 % x 8,92 kW ) = 56 kW + 8,92 kW = 68.4 kW. Diketahui total beban kalor refrigerasi adalah sebesar 68,4 kW dan daya kompresor yang penulis ketahui pada spesifikasi yaitu 29,84 kW jika 3 kompresor dinyalakan secara bersamaan maka akan menghasilkan daya (29,84 kW x 3 = 89,52 kW).  Dengan demikian dapat diketahui masing – masing kompresor menerima beban kalor sebesar 22,84 kW dimana (68,4 kW : 3 kompresor = 22,84 kW). Maka persentase dari perbandingan beban kalor refrigerasi terhadap daya motor penggerak kompresor adalah 76 %.
Pengaruh Susunan Kawat dan Plat Baja pada Aluminium Matrix Composites Terhadap Uji Mekanik dan Uji Balistik
Authors: Prayoga Gilang Aji , Saefuloh Iman , Pramono Agus
Published: December 2020

Al 6061 memiliki sifat mekanik yang unggul antara lain bobot ringan, mampu las baik, ketahanan korosi baik serta harga yang murah, tetapi memiliki kelemahan dalam hal kekuatannya. Salah satu metode efektif untuk meningkatkan kekuatan adalah menambahkan beberapa material seperti SiC, hal ini dikenal sebagai Aluminium Matrix Composites. AMC (Aluminium Matrix Composites) adalah jenis material komposit logam dengan aluminium sebagai matriks dan serbuk SiC sebagai penguat. Proses pembuatan AMC tidak mudah karena matrik dapat membentuk gumpalan. Maka dari itu metode stir casting sangat efektif karena dapat menghasilkan AMC yang merata dan memecah gumpalan tersebut. Untuk menambah ketangguhan material pada penelitian ini diberi penguat kawat baja SS201 dan plat SS316 yang kemudian penggabungannya menggunakan metode cor. Pola susunan plat baja SS316 dan kawat baja SS201 pada AMC berpengaruh terhadap ketangguhan dan ketahanan balistik. Penambahan kawat dan plat baja dengan pola susunan yang membentuk piramida sesuai dengan kekuatan materialnya pada AMC terbukti menghasilkan tahan balistik yang baik dengan bobot yang ringan.
Analisa Pengaruh Variasi Media Pendingin Pada Proses HeatTreatment Metode Hardening-Tempering Material Baja S45C Terhadap Sifat Mekanik dan Struktur Mikro
Authors: Permana Aldi Wahyu , Anjani Ratna Dewi , Gusniar Iwan Nugraha
Published: December 2020

In Our life, we always life with any tools and technology for improve our life. We can find many tools and other technolgy are made from metal. Of course, we need metals which have a characteristic for improve that inquiry, for example in terms of hardness in metal. Metal hardness can be increased in several ways. One of them is the hardening process. This process is a process of heat treatment of metal by heating and then cooling it to a certain temperature. In the traditional market, a lot of shredded coconut water is not used and can be used as a cooling medium in the hardening process. Therefore, the author will use the results of this wate shredded coconut water as a cooling medium for the hardening process.  Researchers  examined  the  effect  of  variations in heat  treatment  process  cooling media  on mechanical properties and microstructure with three variations of coolant. temperature 865 ⁰C for hardening process and 465 C for tempering process. research activities include hardness and micro structure testing. The results showed that the hardening process salt water cooling medium had the highest hardness value of 275.6Hv while the lowest hardness was  obtained in the coconut water cooling medium  which had carried out the tempering process with a hardness of 219.3Hv. This is influenced by SOQ (Severity Of Quenching) or what is called the ability of the cooling media, for salt water the value is 5.0 for SOQ and for coconut water below 2.055. Meanwhile, for the microstructure, it can be seen that the hardening process brine cooling medium has a finer structure than the other cooling specimens. Meanwhile, in the tempering process, martensite turned into finer ferrite cementite with a hardness of 269.3Hv
Pengaruh Perlakuan Panas dan Deformasi Panas Pada Perilaku Partikel Penguat-MMC
Authors: Haryono Muhammad Budi
Published: December 2020

Dalam beberapa tahun terakhir, penelitian tentang morfologi dan distribusi dari partikel penguat pada MMC sangat diminati karena terjadi suatu perdebatan dimana komposit dengan distribusi partikel jaringan memiliki kekuatan yang lebih baik dari distribusi merata. Perlakuan panas memiliki peran penting terhadap morfologi dan mendistibusikan ulang penguat partikel dipermukaan matriks yang bertujuan memperbaiki kekuatan mekanik dari komposit. Perlakuan panas pada komposit dapat menyebabkan penguat partikel tumbuh menjadi lebih besar dengan bentuk yang berbeda dan merubah distribusi partikel pada permukaan matriks yang berakibat menurunnya kekuatan mekanik. Oleh karena itu deformasi panas digunakan untuk mencegah terjadinya pertumbuhan partikel. deformasi panas juga memiliki peran untuk merubah struktur jaringan dari pola distribusi penguat partikel.
About the class of approximation by generalized characters
Authors: Vinh Dang Van
Published: December 2020

Given a certain class  K1 of algebraic structures. We study a problem of finding a class  K2 of algebraic structures such that the class K1  is approximable into K2 with respect to various predicates by generalized characters from  K1 to K2. The problem of minimization of approximation is also considered. Some theorems related to the problem of constructing an approximation class are obtained. The problem in question is much more complicated and actual than the approximation problem we have been studying before (see [2]-[6]). The results of the description of the approximation class play an important role in studying the solvability problem of the predicate P in the class of semigroups K. In particular, if the approximation class consists of finite semigroups, then this problem is solved positively. Even more difficult is the problem of determining the necessary conditions that class  is an approximation class for a given class K.
Skin Cancer Detection Using GLCM and ABCD Parameter
Authors: Supraja V. , Gayathri G. , Thanuja K. , Harshitha K. , Sasikala M. N.
Published: December 2020

Lately, skin malignancy is viewed as one of the most Perilous types of diseases found in People. Skin malignant growth is found in different sorts, for example, Melanoma, Basal and Squamous cell Carcinoma among which Melanoma is the most capricious. The discovery of Melanoma malignant growth in the beginning period can be useful to fix it. PC vision can assume a significant job in Clinical Picture Analysis and it has been demonstrated by many existing frameworks. Right now, we present a PC helped strategy for the location of Melanoma Skin Malignant growth utilizing Picture Preparing instruments. The contribution to the framework is the skin sore picture and afterwards by applying novel picture preparing systems, it investigations it to close about the nearness of skin malignancy. The Lesion Picture investigation devices checks for the different Melanoma parameters Like Asymmetry, Boundary, Color, Diameter (ABCD) and so on by surface, size and shape investigation for picture division and highlight stages. The extricated highlight parameters are utilized to characterize the picture as Ordinary skin and Melanoma malignant growth lesion.
Interpretation of AF-DF protocols for FitureMulti Layer-IDMA
Authors: Umar Syed , Yadesa Tariku Birhanu , Jimalo Kamal Mohammed , Vijaya Kumar M. Paul N
Published: December 2020

In this article, we investigate the bit error rate (BER) performance in a cooperative relay communication system for multilateral IDMA (ML-IDMA) using the maximum ratio combination (MRC) technique. ). ). We investigate the effect of the number of lines on performance and find the average error rate in bits of the AF relay scheme (Amplify and Forward) using the signal-to-noise ratio (SNR) of the relay connection in closed form. The proposed system for evaluating ML-IDMA performance is provided with a different number of layers and a different number of relays in an ML-IDMA cooperative environment. The simulation results show that the BER performance of a 4-relay IDMA double layer system (K = 2) is approximately 4 dB. In addition, the bandwidth saving is 50%. Ultimately, BER performance deteriorates as the number of layers increases and the proposed system increases bandwidth by approximately 1/K.