bluuebunny/crossref_metadata_2025 huggingface dataset:
Student teachers’ perceptions of flipped learning in music education
Authors:   The Korean Society of Music Education Technology, Kim Ji Hyun
Published: September 2021

The purpose of this study was to investigate student teachers’ perception and educational applicability of flipped learning in music education. In this study, the following questions were addressed: (1) what are the student teachers’ perceptions of flipped learning in music education? (2) How do the student teachers understand the flipped learning regarding pedagogical effects? (3) What is the educational applicability of flipped learning that the student teachers think? Using the convenience sampling, two universities and two graduate schools of education in Seoul were selected. From the t-test and one-way ANOVA analyses (n=70), the findings revealed that the student teachers had positive perspectives on using flipped learning in music education. They believed the positive influence or effects of flipped learning in music education on various dependent variables, such as students’ academic achievement, motivation, and attitudes. The student teachers would like to utilize the flipped learning in their future classrooms albeit possible problems. This study suggested that a useful area of future research might be to investigate in-service music teachers’ perspectives on flipped learning. Further studies also might be conducted with pre- and/or in-service music teachers of a different demographic, various other cultures, or applied to another research site. Moreover, this study suggested that music educators, school administrators, public agencies, and institutions need to design professional development workshops focused on flipped learning in music education.
Integrated analysis of climate, land use and water for resilience urban megacities: A case study of Thailand and Viet Nam
Authors: Monprapussorn Sathaporn , Ha Le Phoung
Published: September 2021

This research aims to explore the integration of land use, climate, and water resources for urban resilience in Bangkok, Thailand and Hanoi, Viet Nam, both of which are megacities of Southeast Asia. Climate projections using the WorldClim database for 2050 in Bangkok reveal an increase in temperature by 8.2 percent, while precipitation will tend to slightly decrease by 7.47 percent compared to 1960-1990. The model also forecasts warmer temperature by 10.97 percent and a slight decrease by 2.6 percent in precipitation in Hanoi by 2050. Scenario-based land use projection using the CLUMondo model reveals a higher urban expansion rate in Bangkok and Hanoi under “business as usual” (BAU) scenarios. Regarding the Green Growth (GG) scenario, forest cover in Hanoi is expected to increase at a higher rate than Bangkok by 2050. A projected increase in water demand by 2050 in both cities will come from agriculture and industrial expansion, an increase in the population, and higher living standards. Bangkok and Hanoi are particularly vulnerable to water shortage from less precipitation in 2050, which will cause water supply problems in the future. The combined impact of climate and land-use change by 2050 may lead to urban water supply problems. Urban planners and policymakers should consider the significant impacts of water security and prepare for city mitigation and adaptation to cope with these changes.
Approaching Social Setting when Analyzing Language Change in the Early Republic
Authors: Meirelles Virginia A. G.
Published: September 2021

Any study that concentrates on language change should assess factors such as historical context and social structure. However, approaching the phonetic and phonological changes that took place during the Early American Republic (1776–1861) is a complex task since it was a period of considerable social, political and economic reorganization Additionally, although many biographies and studies on selected issues have been written, the scholarship about the period remains unconnected and fragmented. As such, this article exposes the theoretical and methodological preparation for a research on sound change during the Early American Republic by discussing how to undertake data collection and how to approach data analysis.
The Photo-Text in the Mussolini Era
Authors: Rossetti Carla
Published: September 2021

In the 1930s, Fascism’s Mythopoeia found in propaganda photobooks a comfortable space in which to configure itself. The layout of the photobooks draws on the experiments carried out by the editors of “Campo Grafico” [1933 - 1939] and by eclectic personalities like Guido Modiano; with reference to photography, on the other hand, from the modernist style developed by the amateurs of photographic circles reworking the experience gained by the European avant-gardes since the previous decade. All these innovations led to a rethinking of the usual relationship between image and text, gaining a new and a much more dynamic interaction between visual and textual. Through the analysis of some of the most important photobooks of the Fascist Era, the following article aims to show some aspects of the verbal and visual rhetoric which the Fascist regime used to generate an articulated model of the world in which to believe, even if its appearance differed radically from what one saw with one's own eyes or experienced on one's own skin every day. In propaganda photo books, the facts are emphasized, even judged, in order to construct a specious argument that leaves no room for doubt.
Multilingual Content in Teaching the Kazakh Language Courses
Authors: Orazaliyeva Elmira , Orazbayeva Fauziya
Published: September 2021

According to the second state program on the development and functioning of languages until 2020, Kazakhstan concentrates on consolidating the Kazakh language as the state language, where Russian, English or others are foreign languages. New educational programs of the country assume a step-by-step implementation of communicative language skills. Students receive a possibility of relaying certain knowledge in the field of natural, human and technical sciences. The mission of Abai Kazakh National Pedagogical University as the educational center of transforming the results of advanced research in the field of pedagogy, teaching methods are implemented to prepare teachers in order to support multilingual content approaches in education. It is expected that in high schools four natural subjects like chemistry, biology, computer science, and physics will be taught in English, Kazakh, and Russian, while history, language, literature and other art sciences will be the subjects of the Kazakh or Russian languages. The school programs with general educational standards are aimed at creating a base of modernly demanded and replenished knowledge. It explains the creation of the International Nazarbayev University which is unique in Kazakhstan. High admission requirements characterize selection quality, and targets in mastering foreign languages. Keywords: multi-academic content, multilingualism, cross-cultural expertises, educational methods and strategies, educational approaches
CONTROL AND MONITORING OF FUSION WELDING BY WAY OF EXAMPLE OF MANUFACTURING AIRCRAFT AIR CONDITIONING SYSTEMS ELEMENTS
Authors: Merkulov Vladislav , Lazarev Stanislav
Published: September 2021

The purpose of the study is estimation of the efficiency of the control systems use for improving the organization of various welding processes and perfectibility of the technological discipline of their implementation.

The article opens the concept of "welding production management" as a comprehensive quality and performance management system of the welding process.

The solution to the problem of reducing the time for optimizing structures was the introduction of a new computer system. It successfully collects data for calculating and analyzing the space of design solutions, for more accurate forecasting of product characteristics based on numerical modeling. The additional module performs the analysis and optimization of the welding process in an interdisciplinary optimization environment. The algorithm sets up strategies for finding the best solution based on the required characteristics and properties of the product. Hybrid and adaptive search methods are used for this purpose.

The new process eliminates the need to use several segmental systems, while all optimization is now performed in a unified environment.

The exclusion of the human factor in the selection and installation of the welding mode increases the qualitative and quantitative indicators of the entire technological process, since the preparatory and final time in welding can reach 20% of the entire operation time, and an error in one parameter can lead to a final defect of the whole workpiece.
CIRCUITRY , STRUCTURE AND PROPERTIES OF HETEROGENEOUS MATERIALS
Authors: Kryukov Dmitriy , Krivenkov Aleksey , Chugunov Sergey
Published: September 2021

Currently, heterogeneous materials based on titanium and aluminum alloys are widely used as promising armor materials. When a ballistic object is exposed to the armor material, brittle cracks that occur at the contact point spread in such a way that composite material is in state of decay both deep into and along the interlayer boundaries of the joint, while there is a violation of the composite structure and loss of the mechanical strength of the armor element. In this regard, the task of developing new reinforcement schemes for composite armor is urgent. One of the most promising technologies in the field of creating and developing new composite non-metallic armor materials is explosion bonding. The authors of the work proposed a new scheme for reinforcing a heterogeneous metal material by means of explosion bonding, which uses internal perforated reinforcing layers that serve as elements preventing the development of brittle fracture at the point of ballistic contact. To increase the efficiency of the destruction of a ballistic object in the composite structure, the authors proposed the formation of highly solid intermetallic compounds at the boundary between the metal of the base of a viscous metal matrix and the reinforcing element by subsequent heat treatment of the material. The conducted micro-X-ray spectral analysis of intermetallic compounds showed their correspondence to the chemical compound α-titanium (TiAl3). Comparison of the obtained level of physical and mechanical properties of the developed heterogeneous armored material with analogues suggests that the expected level of the composite protection class against small arms is in the range from Br4 to Br5 according to GOST R 50963-96 with an armor thickness of 40 to 60 mm, which makes it possible to reduce the weight of armored vehicles significantly and, as a result, increase its tactical and technical characteristics.
Yeraltı ve Şarkı Söyleyen Kadınlar Filmlerinde İtki İmgeler, Kökensel Dünya ve İnsandışı Hale Geliş.
Authors: ERBALABAN GÜRBÜZ Özge Nilay
Published: September 2021

Sanat, klasikten moderne felsefenin daima tartıştığı kavramlardan biridir. Felsefe ise sanatta, sanatın imkânlarıyla yeniden var olur. XX. Yüzyılın en özgün filozoflarından Gilles Deleuze’ün eserlerinde sanatçı ve filozof fikirler inşa etmeleri bakımından benzerdir. Ne var ki sanatçının yöntemiyle filozofun yöntemi birbirinden farklıdır. Sanatçı algılamları ve duygulamları harekete geçirerek, filozof kavramları kullanarak fikirler icad eder. Bir sanatçı olarak yönetmen ise algılamları ve duygulamları, sinemaya özgü araçları kullanarak imgeler biçiminde dışavurur.

Bu makale Türkiye Sinemasının iki auteur yönetmenine ait Yeraltı (Zeki Demirkubuz, 2012) ve Şarkı Söyleyen Kadınlar (Reha Erdem, 2013) filmlerini, Deleuze’ün imge kategorileriyle karşılaştırmayı, bu yöntemle iki yönetmenin filmlerinde sinemaya özgü araçları kullanarak Deleuze’ün vurguladığı biçimiyle algılamlar ve duygulamlar yoluyla fikirler kurduğunu göstermeyi amaçlamaktadır. Bu nedenle araştırma yapılırken öncelikle Deleuze’ün felsefesinde sanatla ilgili fikirleri incelenmiştir. Deleuze, sinema felsefesinde kullandığı bazı kavramları tarihsel olarak öncelikle sanat felsefesiyle ilgili çalışmalarında tartışmaya açmıştır. Deleuze’ün sanat felsefesinin gelişimi, Deleuze’ün çalışmaları kapsamında kronolojik bir biçimde ele alınmıştır. Deleuze için sanat, felsefe ve bilim gibi düşünme etkinliklerinden biridir. Kronolojik literatür incelemesi Deleuze’ün felsefesinin, onun sanat felsefesiyle ilgili düşüncelerinden ayrılamayacağını, sinemayla ilgili fikirlerinin de bu bağlamın özgün bir parçası olduğunu göstermektedir. Ardından Deleuze’ün Sinema I: Hareket İmge’de tartıştığı imge sınıflandırmasına “itki imgeler” bağlamında değinilmiştir. Deleuze için filmlerin sinematik bir düşünme etkinliği gerçekleştirebilmesi imgeler icad etmesine bağlıdır. İtki imgelerin birleştirici kavramları “kökensel dünya” ve “oluş”tur. Bu nedenle adı geçen filmlerdeki mizansen, oyunculuk ve dil gösterenleri Deleuze’ün itki imgeler ve onların birleştirici kavramları aracılığıyla çözümlenmiştir. Bunun sonucunda yönetmenlerin, Deleuze’ün itki imgelerini filozofun tartışmaya açtığı kavramlarla birlikte sinematik olarak inşa ettiği ortaya konulmuştur. Film yönetmenlerinin, kategorik insan tanımını mizansen, oyunculuk ve dil gösterenlerini kullanarak tartışmaya açtığı sonucuna varılmıştır.
Scientific reports 6-2021.docx
Authors: Trịnh Trúc , Tran Yen
Published: September 2021

The COVID-19 pandemic has resulted in a significant loss of human life throughout the world, and it poses an unprecedented threat to public health, food systems, and the workplace. COVID-19 has a significant impact on our lives right now; in addition to physical health, it has an influence on human mental health, particularly among medical personnel.
Redianto Sinaga
Authors: PEMBANGUNAN GOVERNANCE: JURNAL POLITIK LOKAL DAN
Published: September 2021

The purpose of this study is to find out how media relations strategies are applied in media relationships, barriers faced in running the media relations strategy and the relationship model created between the PR with the media. This research uses the paradigm of kontruktivisme with qualitative descriptive approach. Data collection techniques were conducted through in-depth interviews, participatory observation, and document collection / library study. The result of this research shows the effort of Public Relations Division of North Tapanuli Regency Government to do the strategy to manage the relationship, develop the strategy and develop the network as an effort to improve the positive image. However, Media Relations strategy implemented by Public Relations of North Tapanuli regency is still less effective because some of the problems faced.
Reform to Abolish: A Pragmatic Analysis of Prison Labor & Strip Searches in Quebec Correctional Law
Authors: Marcoux Rouleau Alexis
Published: September 2021

In the past year, abolitionist themes have been at the forefront of mobilizations such as #BlackLivesMatter, #MeToo, and #FreeThemAll. This paper relies on socio-legal feminist methodology and proposes a pragmatic abolitionist analysis of correctional law, the Loi sur le système correctionnel du Québec (LSCQ). I emphasize two issues reflective of ongoing structural harms within women’s jails – prison labor and strip searches – and argue that both practices instill everyday bodily harms due to their framing in the LSCQ. Although prison labor is presented as favoring social reinsertion, per the LSCQ incarcerated women receive inadequate wages relative to the cost of living in prison thus limiting their access to menstrual products and potentially leading to dangerous alternatives. As for strip searches, they are presented as means to ensure the safety of the institution yet are experienced as unsafe and as state-inflicted sexual assault. Per the LSCQ, strip searches can be conducted in a range of circumstances leaving much to correctional officers’ discretion, thus allowing for discriminatory rule enforcement and exposing incarcerated women of color to further violence. I conclude by presenting short-term abolitionist reforms which could reduce these everyday bodily harms. I also call for increased solidarity with incarcerated people within social mobilizing and organizing.
Temporal difference thresholds and repetitive stimulation: Can click trains improve temporal sensitivity?
Authors: Williams Emily A. , Ogden Ruth , Stewart Andrew James , Jones Luke Anthony
Published: September 2021

Trains of auditory clicks increase subsequent judgements of stimulus duration by approximately 10%. Scalar timing theory suggests this is due to a 10% increase in pacemaker rate, a main component of the internal clock. The effect has been demonstrated in many timing tasks, including verbal estimation, temporal generalisation, and temporal bisection. However, the effect of click trains has yet to be examined on temporal sensitivity, commonly measured by temporal difference thresholds. We sought to investigate this both experimentally; where we found no significant increase in temporal sensitivity, and computationally; by modelling the temporal difference threshold task according to scalar timing theory. Our experimental null result presented three possibilities which we investigated by simulating a 10% increase in pacemaker rate in a newly-created scalar timing theory model of thresholds. We found that a 10% increase in pacemaker rate led to a significant improvement in temporal sensitivity in only 8.66% of 10,000 simulations. When a 74% increase in pacemaker rate was modelled to simulate the filled-duration illusion, temporal sensitivity was significantly improved in 55.36% of simulations. Therefore, scalar timing theory does predict improved temporal sensitivity for a faster pacemaker, but the effect of click trains (a supposed 10% increase) appears to be too small to be reliably found in the temporal difference threshold task.
Social Media and Well-being: A Methodological Perspective
Authors: Parry Douglas A. , Fisher Jacob T. , Mieczkowski Hannah , Sewall Craig Jeffrey Robb , Davidson Brittany I
Published: September 2021

Due to the methodological challenges inherent in studying social media use (SMU), as well as the methodological choices that have shaped research into the effects of SMU on well- being, clear conclusions regarding relationships between SMU and well-being remain elusive. We provide a review of five methodological developments poised to provide increased understanding in this domain: (1) increased use of longitudinal and experimental designs; (2) the adoption of behavioural (rather than self-report) measures of SMU; (3) focusing on more nuanced aspects of SMU; (4) embracing effect heterogeneity; and (5) the use of formal modelling and machine learning. We focus on how these advances stand to bring us closer to understanding relations between SMU and well-being, as well as the challenges associated with these developments.
Social correction of fake news across party lines
Authors: Mosleh Mohsen , Martel Cameron , Eckles Dean , Rand David Gertler
Published: September 2021

Social corrections, wherein social media users correct one another, are an important mechanism for debunking online misinformation. But users who post misinformation only rarely engage with social corrections, instead typically choosing to ignore them. Here, we investigate how the social relationship between the corrector and corrected user affect the willingness to engage with corrective, debunking messages. We explore two key dimensions: (i) partisan agreement with, and (ii) social relationship between, the user and the corrector. We conducted a randomized field experiment with N=1,586 Twitter users and a conceptual replication survey experiment with N=812 Amazon Mechanical Turk workers in which posts containing false news were corrected. We varied whether the corrector identified as Democrat or Republican; and whether the corrector followed the user and liked three of their tweets the day before issuing the correction (creating a minimal social relationship). Surprisingly, we found that shared partisanship did not increase a user’s probability of engaging with the correction. Conversely, forming a minimal social connection significantly increased engagement rate. A second survey experiment (N = 1,621) found that minimal social relationships foster a general norm of responding, such that people feel more obligated to respond – and think others expect them to respond more – to people who follow them, even outside the context of misinformation correction. These results emphasize social media’s ability to foster engagement with corrections via minimal social relationships, and have implications for effective, engaging fact-check delivery online.
Social distance: a comparison between the screen and virtual environments
Authors: Pereira Marcos Emanoel , Techio Elza Maria , Álvaro José Luís , Maloa Benvindo , Feitosa Carina , Reina Juliana
Published: September 2021

Social distance is one of the indicators of intergroup relations. It expresses the degree of intimacy, proximity or distance in relation to the members of specific social groups, making the concept an indirect form of referring to prejudice. The present study described in this article aims to evaluate the protocol for the use of an indirect measure of social distance, implemented by computers and specialized devices. We sought to assess the potential of the technique of virtual reality as a criterion for estimating social distance by comparing the results obtained in the virtual environment with the correlated measures obtained in a computer screen. This is an experimental study, developed to evaluate the pleasantness of four photographs and the registry of two classes of indirect measures. Social distance was chosen to evaluate the photographs and the response time was used to choose the estimate, in two modalities of data collection, one in a screen environment and the other in the virtual environment, in Brazil and Mozambique. A total of 150 university students participated in the study, 87 from Brazil and 61 from Mozambique. In the study, we show that the estimate for social distance is more associated with the response time than the attractiveness of the image, regardless of the country. When we introduce in the predictive models the variables sex and skin color of the individuals portrayed in the photographs, we note that the models obtained in the virtual environment present better indicators than those obtained in the screen, except for the predictive model for the evaluation of the distance of the Black woman portrait. The response time proved to be much more central in the model than the attractiveness of the image. In the screen environment, the increase in the image size was connected to the greater amount of time spent in decision-making while in the virtual environment the distancing from the image was connected to a greater amount of time spent making a decision. The country of origin had little influence over the final models. In conclusion, we may highlight that the effects of social distance, the response time and the attractiveness of the image were greater in the virtual environment, which inspires us to highlight the importance of using more sophisticated data collection procedures through the use of information technology.
Extracurriculare Open Science: Eine Ergänzung der Handlungsempfehlungen
Authors: Grüning David Joachim
Published: September 2021

Es existieren zahlreiche Bemühungen, Open Science unter Forschenden zu etablieren und aktuelle Forschungspraktiken metawissenschaftlich zu untersuchen. Diese Bemühungen sollten allerdings auch mehr auf Studierende ausgeweitet werden. Während curriculare Veranstaltungen ein wichtiger Kanal für die Vermittlung von wissenschaftlicher Praxis sind, erweitere ich mit diesem Diskussionsbeitrag das Positionspapier von Brachem et al. (2021) um vier wertvolle extracurriculare Möglichkeiten der Open Science-Vermittlung.
Konsep dasar sejarah: Pengantar untuk pembelajaran IPS
Authors: Miftakhuddin Miftakhuddin
Published: September 2021

Sejarah merupakan bagian dari ilmu sosial yang sebetulnya bisa dipahami dengan mudah jika mengikuti bagaimana cara berpikir sejarawan dan bagaimana cara kerja metodologi sejarah. Tidak seperti profesi dokter yang harus diisi oleh orang dari disiplin ilmu kedokteran. Siapapun bisa menjadi sejarawan, karena sejarah merupakan ilmu yang terbuka. Setiap orang punya kesempatan yang sama untuk menjadi sejarawan selaman dia bisa menjalankan metodologi sejarah dengan konsisten dan baik. Demikian juga dengan pemahaman sejarah. Sejarah harus dipahami dari berbagai sudut pandang sebagaimana berbagai ruang lingkup yang dimiliki oleh sejarah. Bagi orang-orang keguruan atau kependidikan, pemahaman tentang kedudukan sejarah dalam ilmu sosial dan kedudukan sejarah dalam IPS, akan sangat membantu dalam menyampaikan materi sejarah di ruang-ruang kelas. Terlebih lagi jika mereka dapat mengamalkan kaidah penyampaian sejarah sesuai dengan jenjang pendidikan siswa di satuan pendidikan.
When, and how, does property matter?
Authors: Dorfman Avihay
Published: September 2021

This article seeks to reclaim for property law and theory the centrality of two hitherto neglected questions: when does property matter and, to the extent that it does, precisely how. I argue that, in some cases, the property owner’s entitlement to exclude others has virtually nothing to do with the right to property; property, then, is epiphenomenal. At other times, an entitlement to exclude cannot exist independently of having a right to property. But even then – and this is where the second question concerning how property matters kicks in – there are important differences between excluding others for housekeeping purposes (say, ‘not now’) and denying access categorically (say, ‘not for you’). I therefore argue that the conventional identification of property with exclusion, or with exclusion and inclusion, obscures the difference that the right to property could, and should, make. Addressing the questions of when, and how, does property matter change the way we understand in theory and determine in practice what rights to exclude, and duties to include, do we have.
Letter: The unbearable lightness of the evaluation of research projects: do we need to regularize the professional activity of research evaluation?
Authors: Orduña-Malea Enrique
Published: September 2021

This letter aims to highlight severe inconsistencies in the scientific evaluation of regionally publicly funded research projects, uncovering structural failures related to the public management of science that go beyond technical aspects of bibliometrics. This problem is exemplified through an illustrative case study (the public grants program to emerging research groups funded by the regional government of the Valencian region, Spain, NUTS-2), describing three complementary aspects of this call (the evaluation system, the evaluation process, and the communication of the evaluation). The problems illustrated by this case study lead to a general problem related to the nonstrategic use of science. Finally, the national and international regularization of the professional activity of research evaluation in general, and bibliometrics in particular, is proposed as a route to avoid mismanagement of science (and scientific evaluation).

Resumen
Esta carta tiene como objetivo resaltar graves inconsistencias en la evaluación científica de proyectos de investigación financiados con fondos públicos regionales, destapando fallos estructurales relacionados con la gestión pública de la ciencia que van más allá de los aspectos técnicos bibliométricos. Este problema se ejemplifica a través de un estudio de caso ilustrativo (el programa de ayudas públicas a grupos de investigación emergentes financiado por el gobierno regional de la Comunidad Valenciana, España, NUTS-2), describiendo tres aspectos complementarios de esta convocatoria (el sistema de evaluación, el proceso de evaluación, y la comunicación de la evaluación). Los problemas ilustrados por este estudio de caso conducen a un problema general relacionado con el uso no estratégico de la ciencia. Se propone finalmente la regularización nacional e internacional de la actividad profesional de la evaluación de la investigación en general, y de la bibliometría en particular, como vía para evitar la mala gestión de la ciencia (y de la evaluación científica).
Palabras clave
Evaluación de la investigación; Bibliometría; Proyectos de investigación; Financiación pública de la ciencia; Ciencia de la ciencia; Meta-investigación; Convocatorias de investigación regionales; Gestión de la ciencia.
«Азбука» Льва Толстого : учебное пособие для иностранцев, изуча- ющих русский язык / А.В. Брыгина. – М. : «КДУ», «Университетская книга». – 2021. – 162 с.
Authors: Брыгина А.В.
Published: September 2021

В учебном пособии «Азбука» Льва Толстого представлены десять рассказов и басен всемирно известного русского писателя-классика Льва Николаевича Толстого. Тексты адаптированы и снабжены серией лексико-грамматических упражнений и коммуникативных заданий, способствующих совершенствованию языковой компетенции и направленных на развитие речевых навыков. Сборник рассказов является частью учебно-методического обеспечения программы курса для студентов бакалавриата «Русская поэзия и проза. Лексико-грамматический аспект» направления «Лингвистика» профиля «Русский как иностранный» на факультете иностранных языков и регионоведения МГУ им. М.В. Ломоносова. Книга адресована иностранным учащимся начального этапа обучения.
The Adjustment of EOS of Gas-condensate Mixture under the Condition of Input Data Shortage
Authors: Burachok О. V. , Pershyn D. V. , Matkivskyi S. V. , Ye. S. Bikman Ye. S. Bikman, , Kondrat О. R.
Published: September 2021

The article characterizes the key difficulties which emerge during the simulation of phase behaviors described using the model of “black oil” or fully functional compositional model with the help of the equation-of-state (EOS) in order to create valid continuously operating geological-technological 3D models of gas-condensate reservoirs. The input data for 3D filtration reservoir modeling, the development of which started in the 1960s, are the results of initial gas-condensate and thermodynamic studies. Hydrocarbon component composition of reservoir gas in the existing gas-condensate studies is given only to fraction C5+. Taking into account the peculiarities of initial thermodynamic research with the use of the differential condensation experiment and the absence of such type of experiment in the list of standard experiments in commercially-available PVT-simulators, there appeared a need to develop rational approaches and techniques for correct integration of existing geological-production data in PVT modeling. This article describes the methods for adjusting Peng-Robinson equation-of-state under the condition of input data shortage. Depending on initial data availability and quality, the authors have suggested two different methods. The first PVT-modeling method, which makes it possible to adjust the equation-of-state, is based on the data of component composition of gases and fractional composition of the stable condensate. In case the data of fractional composition of the stable condensate are not available, the authors suggest the second method that is the splitting of fraction C5+ following Whitson volumetric methodology. The suggested methods and two different approaches to EOS adjustment allow effective PVT-modeling using available geological and production data. Study results are presented as the graphical dependencies of comparison of potential hydrocarbons C5+content change in reservoir gas before and after configuring the equation-of-state, as well as the synthetic “liquid saturation” loss curve of the CVD experiment.
Forced oscillations of the main gas pipeline open section during the cleaning piston passage
Authors: Grudz V. Ya. , Tutko T. F. , Dubei O. Ya.
Published: September 2021

The problem of forced oscillations of an open section of a gas pipeline during the cleaning piston passage belongs to the type of problems of forced oscillations of one-dimensional elastic objects under the influence of a moving inertial load on them. Currently, there are two ways to solve such problems. The first way is related to the integration of the partial differential equation and the solution of such problems is a superposition of eigen-oscillations and accompanying oscillations. The second way does not involve the integration of the partial dif-ferential equation. Methods of generalized coordinates, generalized displacements and various numerical methods belong to the second type of solving. None of the mentioned methods is simple. Therefore, the authors suggest the method, in which the first mathematical model provides the determination of forced oscillations of the gas pipeline section during the passage of the cleaning piston without taking into account its inertial load on the gas pipeline. In future, on the basis of the first model it is planned to develop the second mathematical model which will provide an approximate determination of the deflections of the pipeline axis, taking into account the inertial load of the piston on the pipeline. The purpose of this article is to obtain a solution to the problem of forced oscillations of the pipeline section during the passage of the cleaning piston without taking into account the inertial forces on the pipeline. The problem is solved by partial differential equation, Fourier method is applied. The right side of the non-homogeneous differential equation is decomposed into an infinite series, which is the sum of the produc-tions of the eigenfunctions of the pipeline section free oscillations and the unknown function of time. After finding out this function, the authors determine the unknown time function in the Fourier method and hence the solution of the problem in the form of an infinite series, the summands of which lessen rapidly. The authors calculate the deflections of the pipeline axis along the entire section of the gas pipeline for different points of time, as well as deflections of individual sections changing in time and moments of deflection.
The influence of contamination of the bottom-hole formation zone and the of perforation channels parameters on the productivity of gas wells
Authors: Kondrat R. M. , Shchepanskyi M. I. , Khaidarova L. I.
Published: September 2021

The reasons and nature of contamination of the bottomhole zone of wells are characterized. The structure of the skin effect is revealed. The characteristics of the types of well completion and the main parameters that are necessary to determine the skin effect are given. For the conditions of a hypothetical well, using the PipeSim program from Schlumberger, the influence of the permeability and thickness of the contaminated bottomhole formation zone on the value of the skin effect is investigated. The graphical dependences of the skin effect of the contaminated zone on its thickness and permeability are shown. The results of graphical dependencies are processed using statistical analysis. According to the research results, the value of the skin effect increases with the decrease in the permeability of the contaminated zone relative to the permeability of the productive formation and with the increase in the radius of the contaminated zone. The improvement in the filtration properties of the bottomhole formation zone occurs with the increase in the permeability of the contaminated zone compared to the formation permeability. The optimal values ​​of the permeability and thickness of the contaminated zone are obtained, above which the skin effect practically does not change. The study of the influence of the quantity and size (length and diameter) of perforation channels per one meter of the open layer thickness is carried out. The research results are shown on the graphical dependences of gas flow rate and bottomhole pressure on the number of perforations per one meter of the open formation thickness, their length and diameter. The use of perforation channels that pass through the conta-minated zone has been substantiated to improve the hydrodynamic connection of the formation with the well and increase the gas production rate. According to the results of studies carried out using the McLeod model, the optimal diameter of the perforation channels is 0,029 m, the length of the channels is 0,296 m, and the number of channels per meter of the open formation thickness is 16.
Simulation of kerogen evolution by thermodynamic methods (on the example of Southern oil and gas region)
Authors: Khokha Yu. V. , Yakovenko M. B. , Lyubchak O. V.
Published: September 2021

The article considers the methods for estimating the level of organic matter transformation, scattered in sedimentary strata, in the process of catagenetic transformations. The authors show the efficiency of kerogen property research by coal petrographic methods and palynological analysis, the purpose of which is to establish the paleotemperature that was actualized in the process of evolution. The advantages and disadvantages of establishing the organic matter generation potential by pyrolytic methods, primarily by pyrolysis by Rock-Eval, are evaluated. In the context of the organic matter evolution indirect study methods, brief information on gas geochemistry is given and the main indicators used in the analysis of the chemical composition of gases in hydrocarbon deposits are listed. It is shown that the equilibrium thermodynamics apparatus can provide information about the conditions and level of organic compounds transformation in the lithosphere. The general information on geological history of the Southern oil and gas region of Ukraine is given and the main events that influenced the modes of transformation of organic matter are shown. The most important of these were the plate collision processes and the accompanying spreading that took place during the approaching of the Arabian continent and Eurasia, which led to the formation of a faults network: submeridional and sublatitudinal. According to the chemical composition of the region's depo-sits, graphs within the coordinates C2/C3 to C2/i-C4 and ln(C2/C3) to ln(C1/C2) are plotted. According to the graphs, the authors establish the trends of organic matter evolution: development in the direction of maturation and kerogen formation without secondary oil destruction. Information on the method of calculating the kerogen/gas system composition according to the Jaynes formalism is given. According to thermodynamic simulation combined with the chemical composition of deposits, maps of equilibrium temperatures and depths for several temperature flows are constructed. The effect of the individual deposits geological structure on the evolution of its contents is shown. The map of generation depletion of the region kerogen is made. According to the results of the map analysis, it is found that the kerogen of the Kerch-Taman interpericline depression is maximally depleted, while the kerogen of the southern side of the Karkinitsky-North-Crimean depression retains the high potential for the formation of light hydrocarbons.
Generalization of the basic research on the increase of recovery factors in water-drive gas-condensate reservoirs
Authors: Matkivskyi S. V. , Kondrat O. R.
Published: September 2021

The problem of monitoring and preventing deposit inundation is becoming increasingly important in Ukraine. The solution to this problem is one of the ways to ensure the energy independence of the state. The operation of producing wells is complicated by the accumulation of liquid at the bottom. Subsequently, it leads to premature shutdown of the wells. Inundation determines the need to isolate the influx of formation water. Considering the significant residual reserves of gas trapped in water, it is important to improve existing technologies and to develop new ones for the development of depleted fields under the conditions of dynamic water drive in order to ensure maximum hydrocarbon recovery rates. This paper summarizes domestic and foreign field development technologies under water pressure conditions and analyzes the main disadvantages and advantages of the existing methods of stimulating hydrocarbon inflows in waterlogged gas and gas condensate wells. The main factors that determine the causes and nature of flooding of productive formations and ways to prevent them are analyzed. Based on the results of the analysis of laboratory and experimental studies, the behavior of gas trapped by brine water has been established.But the issue of determining the localization of residual reserves has not been studied sufficiently. Considering the above mentioned ideas, the author asserts the necessity to and to use geological and technological models constantly. It ensures better extraction of the residual gas from depleted fields under the condition of intensive advance of reservoir water into productive formations. In the case of adapting the three-dimensional model to the actual data of the production history and the simulation of  the exact breakthrough of produced water in production wells, there comes the possible to determine the most promising zones and sections of the field, the reservoirs of which are characterized by the best filtration-capacitive properties and significant gas reserves. The use of a constantly operating geological and technological model of the field will make it possible to develop ways of extracting the residual gas reserves trapped in produced water, to improve existing production technologies and to ensure maximum recovery factors.
Prototipe Penentu Sudut Elevasi Lengan Meriam Secara Nirkabel Menggunakan Motor Langkah Berbasis Mikrokontroler
Authors: Rosdiana Endang , Salam Rahmat Awaludin , Iskandar Reza Fauzi , Darmawan Dudi , Marjan Ahmad , Siregar Octo Emerald , Melina Melina , Restianim Vivien , Novianti Dewi , Kusumaningtyas Valentina Adimurti
Published: September 2021

Permasalahan yang biasa timbul pada pengendalian lengan meriam adalah kurangnya akurasi sudut yang terbentuk dan faktor keamanan dari operator meriam itu sendiri. Dengan mendisain suatu sistem kendali berbasis komputer yang dapat menghitung dengan teliti dan cepat, serta memanfaatkan teknologi nirkabel permasalahan itu dapat diatasi. Prototipe yang dibuat ini cukup sederhana, terdiri dari komputer dengan Bluetooth terpasang, modul bluetooth, mikrokontroler, motor langkah dan rangkaian elektrik penggerak motor langkah. Motor langkah digunakan untuk menggerakkan sistem mekanis baik secara vertikal maupun horizontal. Dari data pengukuran diperoleh karakteristik alat ini yaitu akurasi sudut vertikal lebih baik saat sudut elevasi melebihi 14.5⁰, sedangkan akurasi sudut horizontal lebih kecil saat sudutelevasi melebihi 180⁰, untuk tingkat kepresisian alat, sudut vertikal memiliki nilai ketidakpastian 0 sehingga untuk pengulangan dengan kondisi yang sama diperoleh nilai yang sama, sedangkan untuk sudut horizontal nilai ketidakpastian akan semakin besar saat sudut elevasi lebih dari 180⁰. Prototipe ini bekerja cukup baik dengan jarak maksimum antara komputer dan motor langkahnya 7 meter tanpa ada media penghalang, dengan tidak mempengaruhi sudut elevasi yang terbentuk
Penerapan Metode Alfha Trimmed Mean Filter Dalam Pengolahan Citra Berbasis Android
Authors: Pebriadi Muhammad Syahid , Haryati Sri , Yusman Yanti
Published: September 2021

Citra adalah suatu representasi (gambaran), kemiripan, atau imitasi dari suatu objek. Tujuan dari penelitian ini menggunakan metode Alfha Trimmed Mean Filter berfungsi untuk membuat aplikasi android yang dapat memperbaiki mutu sebuah citra digital dari noise khususnya salt and pepper sehingga dapat meningkatkan mutu citra digital. Aplikasi android yang dibangun menggunakan software eclipse versi juno untuk variasi handphone versi jelly beans API 11 sampai lolipop API 19. jenis citra yang dapat dimanipulasi oleh sistem yang akan dibangun  adalah citra biner, citra grayscale, citra warna 8 bit, citra warna 16 bit, dan citra warna 24 bit (full color). dan setiap hasil citra yang telah dimanipulasi akan disimpan dengan citra format Bitmap (*.bmp) ataupun JPEG (*.jpeg) dengan jenis citra 24 bit. Citra dengan format Bitmap (*.bmp) tersebut sengaja dipilih karena merupakan jenis format citra yang mampu menunjukan kehalusan gradasi bayangan dan warna dari sebuah citra.
Algoritma Brute Force Pada Aplikasi Kritik dan Saran Mahasiswa Berbasis Digital
Authors: Hidayah Riyan Wahyu Nur , Fauziah Fauziah , Rubhasy Albaar
Published: September 2021

The Criticism and Suggestion application is an android-based application intended to provide input and criticism to related agencies, in planning to build this application an algorithm method is needed to match strings. This research was made to make it easier for students to express their opinions. The method used is the brute force algorithm method, this method is used to search for terms in the application made, the brute force algorithm is an algorithm that has a straight nature. The brute force algorithm is a very complicated algorithm, the reason is that with this method to solve problems using a straight forward technique, it takes several inputs and valid considerations, so that you often get problem solving decisions that directly refer to the brute force algorithm or lead to the desired results. . The results of the unit area analysis are to make it easier for users or users to generate criticism and input for their fields and therefore the results of the brute force algorithm program will display the results of thoughts, criticisms and inputs for that field.
APPLICATION OF SHUNGITE FOR CLEANING POULTRY WASTEWATER
Authors:   FSBSI ", Matrosova L.E. ,   Federal Center for Toxicological, Radiation and biological safety ", Tremasova A.M. ,   FSBSI "Federal Center for Toxicological, Radiation and biological safety ", Tarasova E.Yu. ,   FSBSI "Federal Center for Toxicological, Radiation and biological safety ", Erokhondina M.A. ,   FSBSI "Federal Center for Toxicological, Radiation and biological safety ", Potekhina R.M. ,   FSBSI "Federal Center for Toxicological, Radiation and biological safety ", Makaeva V.I. ,   FSBSI "Federal Center for Toxicological, Radiation and biological safety "
Published: September 2021

The article presents the results of organoleptic and physicochemical analysis of waste water from poultry enterprises after passing through a shungite filter. The efficiency of using a filter based on shungite for purification and disinfection of wastewater is shown. The elimination of an unpleasant odor, a several-fold decrease in indices for turbidity, color, oxidizability, and biochemical oxygen consumption were recorded. The amount of lead decrease by 42.2 was noted; manganese – 34.2; copper – 74,1; zinc – 83,6 % (P<0.001); sulfates – 19,5 % (P<0,05); chlorides – 90,6 %; phosphates - by 44,8 % (P<0.001). The amount of ammonia in waste water with a significant excess of this indicator in the starting material after filtration decreased by 2,5 times (P<0.001).