bluuebunny/crossref_metadata_2025 huggingface dataset:
AUV POSITIONING SYSTEM BASED ON RECOGNITION OF ARTIFICIAL MARKERS ON ACOUSTIC IMAGES
Authors: Боровик А.И.
Published: January 2021

Рассматривается навигационная задача, решение которой состоит в повышении точности определения координат автономного необитаемого подводного аппарата (АНПА) путем детектирования размещенных на дне объектов на гидролокационных изображениях. В качестве распознаваемых объектов используются специально спроектированные маркеры с заданными технологическими характеристиками. Алгоритмы размещения маркеров в рабочей акватории и движения аппарата обеспечивают гарантированное обнаружение маркеров гидролокаторами бокового или секторного обзора. Навигационный алгоритм интегрирован в систему управления АНПА и работает в режиме реального времени.

The work considers a positioning task, the solution of which is to increase the accuracy of the autonomous underwater vehicle (AUV) position determination by detecting the objects located on the seafloor on the sonar images. Specifically designed markers with predetermined technological characteristics were used as objects of recognition. Algorithms of marker placement in the operational aquatic areas and vehicle motion guarantees the detection of markers by the side-scanning and sector-scanning sonars. The positioning algorithm is integrated into the AUV control system and works in real-time mode.
Механические процессы в системе с погружной электроразрядной камерой. Эксперимент и моделирование
Authors: Naryzhniy A. G. , Taranenko M. Ye.
Published: January 2021

Нарыжный А. Г., Тараненко М. Е. Механические процессы в системе с погружной электроразрядной камерой. Эксперимент и моделирование // Обработка материалов давлением. – 2019. – № 2 (49). - С. 136-142.

Статья посвящена развитию методики исследования техпроцесса изготовления тонкостенных деталей методом электрогидравлической штамповки, а также анализу его закономерностей и особенностей. Рассмотрена технологическая система, использующая одну погружную камеру. Обсуждаются  динамические механические процессы в импульсной технологической гетерогенной системе, включающей канал электрического разряда, превращающийся в паро-газовую полость, вязкую-упругую технологическую жидкость, упруго-пластическую оболочку, жесткую технологическую оснастку. Для анализа процессов совместно использованы методы экспериментального исследования и математического моделирования на основе численного решения контактных динамических задач механики сплошных сред. Описаны особенности кинетики процессов. Сравнены результаты двух методов. На основе данных математического моделирования системного взаимодействия элементов  дано объяснение экспериментальных результатов. Сделаны выводы об адекватности математической модели и точности метода математического моделирования. Результаты могут быть полезны при разработке и оптимизации нового, а также модификации  существующего технологического оборудования  и параметров с целью повышения эффективности технологического процесса и качества изготовления деталей.
Аппроксимация контура боковой поверхности заготовок при осадке плоскими бойками
Authors: Anishchenko A. S. , Kukhar V. V. , Prysiazhnyi A. H.
Published: January 2021

Анищенко А. С., Кухарь В. В., Присяжный А. Г. Аппроксимация контура боковой поверхности заготовок при осадке плоскими бойками // Обработка материалов давлением. – 2019. – № 2 (49). - С. 35-40.

Статья предлагает аппроксимировать суперэллипсом Ляме контур боковой поверхности полуфабриката, который деформируется осадкой с помощью плоских деформирующих плит. Контур полуфабриката имеет форму бочки и определяется величинами диаметров бочки, торца и высотой полуфабриката. Суперэллипс имеет коэффициенты аппроксимации. Значения этих коэффициентов позволяют определить вид контура боковой поверхности полуфабриката. Контур является: параболой, если коэффициент немного меньше 2, окружностью, если коэффициент равен 2, и эллипсом, если коэффициент немного больше 2. Статья предлагает новую формулу для определения коэффициентов аппроксимации в суперэллипсе. Формула основана на равенстве объемов исходной заготовки и полуфабриката после деформации. Объем полуфабриката определен методом интегрирования суперэллипса Ляме, который предварительно разложили в ряд Фурье. Формула не требует проведения большого числа измерений точек контура боковой поверхности и включает в себя высоту и диаметр исходной заготовки, высоту и диаметры торца и бочки деформированного полуфабриката. Статья содержит сведения об аппроксимации суперэллипсом боковых контуров свинцовых деформированных полуфабрикатов. Первая серия полуфабрикатов получена из заготовок, которые имеют одинаковые исходные высоту и диаметр, осажены со степенью деформации, равной 0,4, с применением различных смазок и без смазок. Коэффициент трения между заготовкой и деформирующими плоскими плитами, определенный по методике Губкина, равнялся 0,29–0,41. Вторая серия полуфабрикатов была продеформирована без смазки между заготовками и плитами со степенями деформации, равными 0,1-0.5 (шаг изменения степени деформации был равен 0,1). Высота исходных заготовок в 2 раза превышала их диаметр.
Моделирование материала цилиндрической заготовки со сварным швом при обжиме-раздаче
Authors: Puzyr R. G. , Dragobetsky V. V. , Levchenko R. V. , Siraya Yu. B.
Published: January 2021

Пузырь Р. Г., Драгобецкий В. В., Левченко Р. В., Сирая Ю. Б. Моделирование материала цилиндрической заготовки со сварным швом при обжиме-раздаче // Обработка материалов давлением. – 2019. – № 2 (49). - С. 55-60.

Показано, что раздача концов трубных заготовок сопровождается потерей устойчивости в окружном и осевом направлении, а также локализацией деформаций с последующим разрушением в виде образования продольной трещины, зарождающейся на торце заготовки. Наличие сварного шва усложняет в общем условия деформирования при обжиме-раздаче и приводит к разрушению заготовки по сварному шву. Для предотвращения трещинообразования необходимо ужесточать коэффициенты обжима-раздачи, что неизбежно приводит к увеличению количества переходов, трудоемкости процесса и себестоимости изготовления детали в целом. Вопрос деформирования сварных конструкций вызывает интерес с развитием новых материалов для автомобилестроения, таких как соединения двух или более стальных листов с различными механическими свойствами, толщиной или типом покрытия, которые имеют важное значение для снижения веса, минимизации затрат и сокращения брака. Показано, что деформирование трубной заготовки будет зависеть не только от характеристик пластичности основного металла и металла сварочного шва, что очевидно, но также от соотношения площадей трубной заготовки. Возрастание приведенных модулей пластичности сопровождается упрочнением сварного соединения по сравнению с начальным металлом заготовки, соответственно уменьшение величины секущего модуля в обеих направлениях – понижением прочностных характеристик металла шва. Дальнейший анализ деформирования сварной заготовки необходимо проводить с учетом локальной анизотропии, вызываемой сварочным швом, что даст возможность определить условия устойчивой пластической деформации и создать дополнительное воздействие на ослабленный участок.
Математичне моделювання процесу дресирування відносно тонких листів і смуг з урахуванням реальних температур реалізації процесу
Authors: Kulik T. A.
Published: January 2021

Кулік Т. О. Математичне моделювання процесу дресирування відносно тонких листів і смуг з урахуванням реальних температур реалізації процесу // Обробка матеріалів тиском. – 2019. – № 2 (49). - С. 71-75.

Метою даної статті є підвищення показників якості відносно тонкого металопрокату, що піддається теплому дресируванню, шляхом уточнення і розширення в обсязі наданої інформації результатів математичного моделювання напружено-деформованого стану і температурних режимів процесу. Уточнено методику розрахунку опору металів і сплавів при їх теплому деформуванні, що забезпечує більш повне і коректне врахування впливу температури. Отримана математична модель теплого дресирування дозволяє врахувати реальний характер розподілів залишкових напружень смуги, що піддається дресируванню, за шириною і, таким чином, прогнозувати один з основних показників якості готового металопрокату. Так, показано що підвищення температур призводить до збільшення рівнів залишкових напруг стиснення в поверхневих шарах. При цьому максимальна інтенсивність зазначених кількісних змін має місце у випадку підведення теплової енергії безпосередньо в осередок деформації через попередньо нагріті робочі валки. Можливість додаткового підвищення рівнів залишкових напружень стиску на поверхні відносно тонких стрічок, листів і смуг робить ефективним використання процесу теплого дресирування у попередньо нагрітих робочих валках не тільки з точки зору зниження енергосилових параметрів, а і з точки зору поліпшення споживчих властивостей заготовок, які використовуються в подальшому при реалізації різних технологічних схем листового штампування.
Ferroptosis and Acetaminophen Hepatotoxicity: Are We Going Down Another Rabbit Hole?
Authors: Jaeschke Hartmut , Adelusi Olamide B. , Ramachandran Anup
Published: January 2021

Acetaminophen (APAP) hepatotoxicity is the most frequent cause of acute liver failure in the US. The mechanisms of APAP-induced liver injury have been under extensive investigations for decades, and many key events of this necrotic cell death are known today. Initially, two opposing
hypotheses for cell death were proposed: reactive metabolite and protein adduct formation versus reactive oxygen and lipid peroxidation (LPO). In the end, both mechanisms were reconciled, and it is now generally accepted that the toxicity starts with formation of reactive metabolites that,
after glutathione depletion, bind to cellular proteins, especially on mitochondria. This results in a mitochondrial oxidant stress, which requires amplification through a mitogen-activated protein kinase cascade, leading ultimately to enough reactive oxygen and peroxynitrite formation to trigger
the mitochondrial membrane permeability transition and cell death. However, the earlier rejected LPO hypothesis seems to make a comeback recently under a different name: ferroptosis. Therefore, the objective of this review was to critically evaluate the available information about intracellular
signaling mechanisms of APAP-induced cell death and those of ferroptosis. Under pathophysiologically relevant conditions, there is no evidence for quantitatively enough LPO to cause cell death, and thus APAP hepatotoxicity is not caused by ferroptosis. However, the role of mitochondria-localized
minor LPO remains to be further investigated.
Preventive Treatment on Sexual Abuse Survivor with Mental Retardation
Authors: Brisma Shinta , Nurmiati Amir
Published: January 2021

The existence of limitations for children with mental retardation causes aninability to protect themselves so that they often become victims of sexualharassment. Preventive efforts are something that needs to be improved forprevention, considering the worse risks to children. The importance of an effortto prevent sexual abuse of children with mental retardation in connection withthe lack of knowledge about sexual abuse and the inability of children to facethe dangers that threaten themselves. From the results of research conductedin the United States in 1994, nearly 90% of children with mental retardationdisorders had experienced sexual abuse, as many as 49% had experiencedsexual abuse more than ten times. The high incidence of sexual abuseexperienced by children with mental retardation is due to various factors,namely the condition of children's limitations, lack of supervision andprotection of children by parents and the environment. Efforts that can be madeare increasing knowledge about sexual abuse and self-protection skills throughthe Behavioral Skills Training Group Program, where children are trained torecognize threatening objects and situations (sexual abuse). Increasingknowledge about sexual abuse and providing training (self-protection skills) isa significant primary preventive measure to reduce the risk of sexual abuse inchildren with mental retardation.
Patterns of Using Analgesics for Menstrual Pain in Female Students Sriwijaya University Faculty of Medicine
Authors: Parisa Nita , M. Khairul Kahfi Pasaribu  , Bintang Arroyantri Prananjaya  , Ardesy Melizah Kurniati  , Ziske Maritska
Published: January 2021

Dysmenorrhea is a condition than women often feel on their productiveage and disru their daily activity. A study that was condone in Palembangfinds that 93,8% SMA fema student had dysmenorrhea. A study in Indiafinds 42% in 654 respondent decided to he their dysmenorrhea withoutvisiting physician and 35% is using wrong medication Analgetics as painreliever sold freely in markets. Dysmenorrhea effects life quality aneducations for the easiness in obtaining the medicine in markets, makingthe re searc about analgetics usage patterns in Faculty of Medicine,Srwijaya University 2016-201 students. The design of this study wascross-sectional descriptive observational on 2 Desember 2019 until 6Januari 2020. The population of this study is FK Unsri (201 2019)students with 628 respondent. The respondent characteristics is found byusin questionnaire. Dysmenorrhea prevalence on FK UNSRI student is88%. Dysmenorrhe prevalence that distrupt activity is 64,7%. FK UNSRIstudent (2016-2019) that use mefenamic acid is 48,3%, paracetamol is33,8% and ibuprofen is 6,2% for the dysmenorrhea.. FK UNSRI student(2016-2019) that consumed analgetics once per day 80,6%. FK UNSRIstudent (2016-2019) that picked tablet is 97,9%. FK UNSRI stude (2016-2019) that chose to used it for a day is 76,5%. The analgetics that ismostly chose for FK UNSRI (2016-2019) students is mefenamic acid, tabletthat was consumed once pe day for a day.
The Correlation between Alcohol Consumption with Anxiety Level on Multiple Drugs User in Sleman
Authors: Kusumadewi Andrian Fajar , Carissa Aulia Firliany  , Silas Henry Ismanto  , Afkar Aulia
Published: January 2021

A B S T R A C TBackground: Since 2013, data showed alcohol consumption in Indonesiaincrease from 3% to 3.3%, and 0.8% of it consume alcohol over the limit(Riskesdas 2018). Consuming alcohol over the limit not only impacted someonephysically but mentally. One of the mental impacts of alcohol consumption isover anxiety. If the anxiety not get treated properly, it can bring patient toconsume more alcohol and moreover to alcohol addiction. Purpose: To examinealcohol consumption level and its correlation to anxiety level.Material danMethod: This study is analytical research with quantitative cross-sectionalsurvey design. Sampling technique were done by consecutive sampling withAUDIT questionnaire survey to measure alcohol consumption level and T-MASquestionnaire survey to measure anxiety level of respondent. Research sampleconsist of 30 multiple drugs user respondents. Result: We got 0.569 p value scorewith Pearson Chi Square analysis which can be interpreted that there is nocorrelation between alcohol consumption with anxiety level. Patient with alcoholabuse mostly come from low to average academic group, in total 29 people, and notmarried group, in total 18 people.Conclusion: There is no correlation betweenalcohol consumption with anxiety level. Academic grade and married status aredeterminant factors of respondent’s anxiety level.
Separation of Diethyl Phthalate From Water by Pervaporation
Authors: Bourassi Ahdi , Martin Emma Humbert , Bourre Melanie , Fila Vlastimil , Gaalova Jana
Published: January 2021

Seventeen different kind of membranes - based on Matrimid, Ultem polymers and DAM/DABA - were prepared and applied for pervaporation of diethyl phthalate from water. They were compared to the commercial materials like PDMS, PP and PS. The components of active layer played a crucial role on membrane process. Newly prepared membranes showed an exceptional sorption capacity (up to 100 %) comparing to the commercial membranes (around 20 %), all by reaching equivalent pervaporation results of all tested membranes (close to 40 %). The fastest permeation was achieved by raising the temperature to 50 °C with PDMS membrane, reaching total elimination of DEP. Diethyl phthalate was preferentially passing through the membranes due to dissimilar affinity of the separation materials.
Socialist Workers’ Party of Finland, 1920–1923
Authors: Saarela Tauno
Published: January 2021

The Socialist Workers’ Party of Finland (SSTP) was a unique case in the division of the labour movements during and after the First World War. In many European countries, a left-wing social democratic or socialist group or party was established during the war, while in Finland the division took place only after the Civil War in 1918. The fact that a socialist party was only established after the division into social democrats and communists had taken place was also particular to Finland. The close cooperation of the SSTP with the illegal communist party residing in Soviet Russia and the party’s rejection of the Social Democrats were due to their differing interpretations of the Civil War and not their positions on the First World War. In Finland, the acceptance of many of the principals of the Communist International did not cause internal splits within the SSTP as it did in Germany, France, Italy, Sweden and Norway. However, in addition to the rigorous criticism of the victors of the Civil War, it contributed to the difficulties the SSTP faced in its work and to the party’s ultimate dissolution. Paradoxically, the party was dissolved at a time when its involvement in the issues of Finnish society became more significant.
Duunarijoukko vailla turvaa
Authors: Peltoniemi Pentti
Published: January 2021

Suomalaiset vapaat toimittajat järjestivät Euroopan ensimmäisen freelancerlakon vuonna 1975. Lakko koski Yleisradio-yhtiötä ja kesti kahdeksan viikkoa. Se oli käännekohta freelancertoimittajille. Heidän ammattiyhdistyksestään tuli jäsenmäärässä mitattuna yhtä suuri kuin vakinaisten toimittajien yhdistyksestä.
A Cautionary Tale
Authors: Kärrylä Ilkka
Published: January 2021

This article examines how the Swedish idea of collective wage-earner funds was received and discussed in Finland in the 1970s and 1980s, especially by the Social Democrats and the trade union movement. The initial proposal entailed profit-sharing with workers and would have made the trade unions co-owners of private enterprise. The Finnish Social Democrats were influenced by the proposal but devised a more moderate idea for company-specific ‘cooperation funds’. The Swedish debate was interpreted in Finland as a cautionary tale of too radical demands causing severe political and labour market conflicts. In negotiations with Finnish employers and bourgeois parties, the idea was further modified into voluntary ‘personnel funds,’ which in effect meant a possibility for personal bonus payments and stock-saving for employees in profitable firms. The outcome was closer to traditional bourgeois and employer ideas of people’s capitalism than to social democratic ideas of ‘economic democracy,’ which had justified the wage-earner fund proposal.
From Guest-Workers to Settlers
Authors: Seppälä Mikko-Olavi
Published: January 2021

Focusing on theatre, the article reveals how issues regarding Sweden-Finnish migrants’ agency and representation became politicised, problematised and reworked in the beginning of the 1970s. In the popular emotional representation of the early 1970s’ Finnish theatre, the migrant worker was seen as a tragic human casualty of inhuman capitalism. The representation was emotionally relevant both to the radical left with its strong anti-capitalist sentiments and to the rural population in northern and eastern Finland that had been affected by structural change and migration. The tragic migrant characters and the pessimistic view of migration, predominant in Finnish drama, was problematised by the Finnish immigrants to Sweden who did not want to be victimised as exploited guest-workers oppressed by capitalism. As the Sweden-Finnish institutions strengthened in the beginning of the 1970s, active cultural politics sought to increase the immigrants’ agency and their participation in society, politics and culture. It was crucial to replace the negative representation of a passive and resigned guest-worker with a positive image of an active and sociable settler. Mirroring a larger shift in the more nuanced understanding of migration processes and in the Swedish minority politics, the new and positive self-representation was to evolve from community-based cultural activity. The local Sweden-Finnish societies were encouraged to launch spontaneous cultural creation, including collective performances based on their everyday migrant experiences.
Analisa Efisiensi Termal Turbin, Kondensor dan Menara Pendingin pada Pembangkit Listrik Tenaga Panas Bumi
Authors:   PEM Akamigas, Sihombing Clinton
Published: January 2021

Geothermal power plants have similarities with other generated power plants such as coal, gas or nuclear power that is converting heat energy into electricity. When the geothermal fluid is extracted from the production well, it will pass through many different processes or equipment on the way to the power plant. During this process the geothermal fluid loses unused energy to generate power. The overall efficiency of the power plant can be affected by several parameters, one of them is design of power plant. This study attempts to analysis the thermal efficiency of the generating components: turbine, condenser and cooling tower at one of geothermal power plant in Indonesia. So, we can know how the performance of the component, whether the component is running well or not. From the calculation results obtained that the turbine, condenser and cooling tower currently still operate well with the value of thermal efficiency of 80%-100%.
Drillstring Design untuk Directional Drilling pada Sumur X Lapangan Y
Authors:   PEM Akamigas, Suryakusuma Khalid Akbar
Published: January 2021

Pada metode-metode awal, saat media informasi dan teknologi yang belum begitu maju, semua sumur di bor secara vertikal kebawah. Pengeboran berarah lahir dan berkembang dari kebutuhan pengeboran lubang sumur ke berbagai arah, tidak hanya kebawah. Peralatan pengeboran khusus dan bermacam metode digunakan untuk mengubah arah pemboran dari vertikal ke arah tertentu atau bahkan kearah horizontal dengan tujuan untuk mencapai target yang tidak dapat dicapai dengan metode pemboran biasa. Program pemboran yang efisien harus didesain secara hati-hati. Desain dapat dikatakan sukses jika memiliki well path yang mudah untuk dibor, kesiapan untuk casing, dan menimalisir hole problem. Well path yang didesain pada sumur ini memiliki BUR sebesar 2.71°/100 ft dengan final inclination sebesar 15.42°. Sumur ini memiliki kedalaman target di 1875 ft dan total kedalaman di 2200 ft. Setelah well path selesai dibuat maka langkah selanjutnya adalah memilih bottom hole assembly yang tepat dan mendesain drillpipe agar sesuai dengan kondisi operasi pemboran sumur ini. Desain ini harus sesuai dengan parameter-parameter dalam pengeboran berarah seperti adanya kemungkinan collapse, adanya kemungkinan pipa putus, serta adanya drag dan torsi.
Bekerja di Ketinggian pada Pekerjaan Konstruksi – Peraturan dan Tindakan Pencegahan
Authors:   PPSDM MIGAS, Trianto Wahyu Mei
Published: January 2021

Bekerja di ketinggian pada pekerjaan konstruksi diasosiasikan dengan bahaya dan kecelakaan. Tingginya angka kecelakaan akibat bekerja pada ketinggian menyebabkan diperlukannya prosedur kerja di ketinggian. Bekerja pada ketinggian harus direncanakan dengan tepat, dilakukan dengan cara yang aman dan diawasi. Bekerja pada ketinggian hanya dilakukan jika situasi dan kondisi kerja tidak membahayakan keselamatan dan kesehatan tenaga kerja dan orang lain. Oleh sebab itu,bekerja pada ketinggian wajib memenuhi persyaratan K3 yang meliputi : perencanaan, prosedur kerja, teknik bekerja aman, APD, perangkat pelindung jatuh, dan angkur, serta tenaga kerja yang kompeten.
Incentives and Work Ability on Job Satisfaction through Performance
Authors: Kasrul Kasrul , Ngandoh Ali Murdhani
Published: January 2021

This type of research used in this study is associative research. The research site is located at PT. Surveyor of Indonesia in Pangkep Region. The sample in this study used the census method in which the entire population was sampled in the study as many as 57 employees. In conducting statistical testing, it uses path analysis. The results showed that the incentives had a positive and significant effect on job satisfaction at PT. Surveyor of Indonesia in Pangkep Region. Work ability has a positive and significant effect on job satisfaction at PT. Surveyor of Indonesia in Pangkep Region.

Incentives have a positive and significant effect on performance at PT. Surveyor of Indonesia in Pangkep Region. Work ability has a positive and significant effect on performance at PT. Surveyor of Indonesia in Pangkep Region. Job satisfaction has a positive and significant effect on performance at PT. Surveyor of Indonesia in Pangkep Region. Incentives have a positive and significant effect on performance through job satisfaction at PT. Surveyor of Indonesia in Pangkep Region. Work ability has a positive and significant effect on performance through job satisfaction at PT. Surveyor of Indonesia in Pangkep Region
Factors Of Development Of Museology In The International Arena
Authors:   The National Institute Of Arts And Design Named After Kamaliddin Behzad Associate Professor Of The Department Of Museology, Doctor Of Philosophy Of Historical Sciences (PhD) Tashkent, Uzbekistan, Mukhamedova Munisa `
Published: January 2021

This article examines the factors of development in the field of Museum studies in the international arena. In addition, the research of Museum scientists has been studied on an evolutionary basis. The inclusion of Museum studies as an independent science in the field of education and training of specialists was also studied.
Research methodology in economics
Authors: REIKIN Vitalii
Published: January 2021

Introduction. Some methodological provisions need to be modified according to the realities of existing practice and be verified according to the possibilities of their application in economic phenomena and processes study. Theoretical analysis of methodological principles, their comparison and generalization were used during investigation.
The purpose of the paper is to study basic methodological prerequisites and principles in economic research.
Results. Analyzing and summarizing the achievements of Nobel laureates, the methodological problems of limited rationality, information asymmetry and opportunistic behavior of economic agents are considered. Modern mainstream in economic research corresponds to binary paradigm of neoclassicism and neoinstitutionalism, which are based on two common elements of the “core”: methodological individualism and “economic man” conception (homo economicus). The focus of the enterprises on maximizing profitability, and households – on benefits, is an axiom of neoclassicism, which implies significant requirements for information quantity and quality. At the same time, rational choice is accompanied by situations of uncertainty and varying degrees of risk regarding such activities consequences. The advantages of the institutional direction as the closest to the real conditions of economic entities market activity are substantiated. A specific feature of neoinstitutional approach is modification of neoclassical paradigm due to preserving basic preconditions of its “core” and partial transformation of “protective shell” into more perfect, realistic principles. In economics, the most significant is methodological combination of “semi-strong” limited rationality with a “strong” form of opportunistic behavior.
Conclusions. Thanks to introducing modified preconditions and methodological principles into neo-institutionalism, it became possible to improve the analysis of economics and to apply interdisciplinary research in combination with the approaches of other branches of science.
Situational management of human resources as a basis for ensuring the economic security of the enterprise
Authors: HANUSHCHAK Tetiana , MAISTRENKO Yuliia
Published: January 2021

Introduction. The development of human resource management of the enterprise becomes especially relevant during the pandemic. The acute problem facing HRs across the country requires a comprehensive solution in the process of ensuring the economic security of the enterprise. The main driving force at the enterprise is personnel. Therefore, to effectively ensure the economic security of the enterprise it is necessary to apply situational management of human resources. Adaptation to change should be considered as an opportunity for rapid application of all long-term experience.
The purpose of the paper is to study the situational management of human resource in the process of ensuring the economic security of the enterprise.
Results. The paper presents the approaches of domestic and foreign scientists to situational management. The authors have developed a model for managing the human resources of the enterprise. An example of personnel management of leading foreign enterprises is given. The author’s vision of solving the problem of human resources management of the enterprise is presented.
Conclusions. The generalization of scientific achievements in situational management of domestic and foreign researchers is given. For a better understanding of management in solving the problems of situational management, the authors present knowledge management tools. It is important to promote self-education, self-organization, learn to manage managers first, foremost, be flexible to exogenous, endogenous factors influencing the development of the enterprise. The authors propose a model of human resources management as a basis for ensuring the economic security of the enterprise. This model will provide a clearer idea for managers and HRs about personnel management in terms of situational adaptability. It differs from existing models in its focus on anthropocentrism. Every good successful leader must become a perfect HR.
Conceptualization of the financial security management mechanism of trade enterprises
Authors: MUKHINA Marharyta
Published: January 2021

The paper considers the features of conceptualization of the financial security management mechanism of trade enterprises in the conditions of turbulent changes. It is proved that the architectonics of the financial security management mechanism of trade enterprises in accordance with comparative analysis can be considered in two spaces as a set: the main elements and links of the organizational structure. A mechanism for managing the financial security of trade enterprises (MMFSTE) has been built. The components of four MMFSTE blocks are analyzed. At the “conceptual block” level, the goal is defined, and in accordance with it – the goals and objectives, principles and desired results of the implementation of the mechanism. At the “organizational block” level, objects and subjects of the mechanism are defined. The methodological block defines the appropriate forms, methods, mechanisms, tools, technologies, and procedures for implementing the MMFSTE. Regarding the “functional block”, it should be noted that it includes three sub-levels of functioning of the mechanism: the first is the definition of restrictions; the second is the definition of implementation and provision subsystems; the third is ways to improve the mechanism and determine the effectiveness of its implementation. The latest economic tools for forming MMFSTE are considered: GAP-analysis, STEP-analysis, SWOT-analysis, KPI, Ishikawa diagram. The Ishikawa diagram is constructed to determine possible time losses when assessing the level of financial security of trade enterprises, which consists of thirteen factors-distimulants. Based on the construction of the Ishikawa diagram, the introduction of two correction factors is proposed: the documentation quality coefficient and the document flow automation coefficient and analytical calculations. This will reduce the asymmetry of information in the diagnosis of financial security of retail enterprises. Possible directions of ensuring financial security of trade enterprises that can increase competitiveness and become a tool for survival in the market environment are considered.
Development of Business Model Digital Fraction Property Investment
Authors: Desyanta I Gede Putu Rahman , Darma Gede Sri
Published: January 2021

Investing a property or real estate could be a challenge for Millennials generation. The increase in property prices is not in line with the increased of minimum wage that makes Millennials only afford to rent the property. To having an investment in property need more time in legal procedure, sometime need more than months. Fraction Property investment is a concept of investing property together. Separate the property in other format of digital assets distributed it to all more than one party. To implement this concept need to has a suitable business model and technology. Rising of industrial revolution 4.0, introduce the world with Blockchain Technology. The research is aiming to give better picture of new business model of investing on a property based on blockchain technology. With right business models, millennials generation will have another methods of investment on a property, that secure, easy and digital.
THE BLACK AND WHITE OF GOFOOD CO THE BLACK AND WHITE OF GOFOOD CO-BRANDING
Authors: Palguna I Gusti Ngurah Bagus Dwira
Published: January 2021

Abstract

This research aims to find out how the implementation of Gofood co-branding with its culinary partners, as well as to find out the pros and cons felt by partners since carrying out their co-branding with Gofood. This research is a qualitative research. The focus is on informants’ personal, not specific companies or agencies, understanding. The data collection technique used is in-depth interviews with source triangulation as a data validity technique. The results obtained show that Gofood's co-branding with restaurant partners falls into the same type of co-branding but with different levels of co-branding and value creation. The pros felt by the partners lies in increasing sales, brand awareness and coverage of the sales areas while the thing that is a contra is pricing.

 

Keywords--- co-branding, third-party online food delivery, business owner experience, Gofood
PROBLEMS OF REMOVING ACER NEGUNDO L. AS ALIENT INVASIVE SPECIES IN MOSCOW
Authors:   Tsitsin Main Botanical garden of the Russian Academy of Sciences, Nikolaeva A.A.
Published: January 2021

On the territories of Moscow, Acer negundo L. (ash-leaved maple) occupies large areas and is one of the first places in terms of quantity among other species. It is recognized as an alient invasive breed for Central Russia. Invasive species pose a threat to natural flora, therefore, their distribution and number must be controlled. There are decrees for the removal of this breed in Moscow, but the number of plants in the city does not decrease, and new specimens continue to be planted. The article discusses the features of the legislation regarding the removal of A.negundo as an invasive species on the territories of the green fund of Moscow, as well as the biological features of this species that complicate the removal of specimens and the management of its coppice and seed renewal. According to the regulations established in Moscow, in the territories occupied by green plants, since the ash-leaved one should be gradually removed from the territory, since old specimens are gradually cut down (if they are affected by diseases and pests, dead or emergency), do not plant new trees of this species recommended. In practice, the number of trees does not decrease, and the rapid growth of self-sowing leads to the fact that in a short time the self-sown plant goes into the category of “tree”, which cannot be removed. In natural areas, for A.negundo, felling, uprooting, annual removal of growing shoots and of juvenile specimens are envisaged. Due to biological characteristics (multi-trunk, extensive root system, high ability to grow overgrowth after cutting the trunk, high germination of seeds and their spread over long distances), these measures for the removal of the species are insufficient. In particular, uprooting leads to a violation of the integrity of the biocenosis, and often it is impossible to carry out it. Without the development of a complex of forestry and chemical control measures, the withdrawal of the invasive species A.negundo from the plantations is impossible.
RABAT'S GARDENS AS AN EXAMPLE OF THE INTENSIVE INFLUENCE OF EUROPE ON THE CULTURAL LANDSCAPES OF NORTH AFRICA
Authors:   Tsitsin Main Botanical garden of the Russian Academy of Sciences, Kotova A.V.
Published: January 2021

The article examines the formation of a neo-Mauritanian landscape and architectural style of Morocco, new for North Africa, during the reign of the French protectorate in the first half of the 20th century. A historical retrospective of the works of French architects, descriptions of the gardens and parks of the city of Rabat, built and reconstructed during the rule of the French protectorate, are given. Brief information is given about the redevelopment of the city, according to the ideas of the modern structure of colonial cities that existed at that time, described in the works of French architects. The process of landscape-architectural organization of the garden space is analyzed. The main planning and design features of the Moroccan gardens of the first half of the twentieth century, as well as the significance of the main elements that embody symbolic, religious and practical ideas, are revealed. It has been established that when designing the gardens, French architects tried to combine several styles, including landscape and architectural techniques traditional for Islamic gardens, inscribing them into the classical French regular layout characteristic of the European Art Nouveau period.
Analytical Solution of Magnetically Dominated Astrophysical Jets and Winds: Jet Launching, Acceleration, and Collimation
Authors: Chen Liang , Zhang Bing
Published: January 2021

We present an analytical solution of a highly magnetized jet/wind flow. The left side of the general force-free jet/wind equation (the “pulsar” equation) is separated into a rotating and a nonrotating term. The two equations with either term can be solved analytically, and the two solutions match each other very well. Therefore, we obtain a general approximate solution of a magnetically dominated jet/wind, which covers from the nonrelativistic to relativistic regimes, with the drift velocity well matching the cold plasma velocity. The acceleration of a jet includes three stages. (1) The jet flow is located within the Alfvén critical surface (i.e., the light cylinder), has a nonrelativistic speed, and is dominated by toroidal motion. (2) The jet is beyond the Alfvén critical surface where the flow is dominated by poloidal motion and becomes relativistic. The total velocity in these two stages follows the same law vΓ = ΩR. (3) The evolution law is replaced by

, where θ is the half-opening angle of the jet and 0 ≤ ν ≤ 2 is a free parameter determined by the magnetic field configuration. This is because the earlier efficient acceleration finally breaks the causality connection between different parts in the jet, preventing a global solution. The jet has to carry local charges and currents to support an electromagnetic balance. This approximate solution is consistent with known theoretical results and numerical simulations, and it is more convenient to directly compare with observations. This theory may be used to constrain the spin of black holes in astrophysical jets.
An Energy Inventory of Tidal Disruption Events
Authors: Mockler Brenna , Ramirez-Ruiz Enrico
Published: January 2021

Tidal disruption events (TDEs) offer a unique opportunity to study a single supermassive black hole (SMBH) under feeding conditions that change over timescales of days to months. However, the primary mechanism for generating luminosity during the flares remains debated. Despite the increasing number of observed TDEs, it is unclear whether most of the energy in the initial flare comes from accretion near the gravitational radius or from circularizing debris at larger distances from the SMBH. The energy dissipation efficiency increases with decreasing radius; therefore, by measuring the total energy emitted and estimating the efficiency, we can derive clues about the nature of the emission mechanism. Here we calculate the integrated energy, emission timescales, and average efficiencies for the TDEs using the Modular Open Source Fitter for Transients (MOSFiT). Our calculations of the total energy generally yield higher values than previous estimates. This is predominantly because, if the luminosity follows the mass fallback rate, TDEs release a significant fraction of their energy long after their light curve peaks. We use MOSFiT to calculate the conversion efficiency from mass to radiated energy and find that for many of the events, it is similar to efficiencies inferred for active galactic nuclei. There are, however, large systematic uncertainties in the measured efficiency due to model degeneracies between the efficiency and the mass of the disrupted star. These must be reduced before we can definitively resolve the emission mechanism of individual TDEs.
ALMA and IRIS Observations of the Solar Chromosphere. I. An On-disk Type II Spicule
Authors: Chintzoglou Georgios , De Pontieu Bart , Martínez-Sykora Juan , Hansteen Viggo , de la Rodríguez Jaime Cruz , Szydlarski Mikolaj , Jafarzadeh Shahin , Wedemeyer Sven , Bastian Timothy S. , Dalda Alberto Sainz
Published: January 2021

We present observations of the solar chromosphere obtained simultaneously with the Atacama Large Millimeter/submillimeter Array (ALMA) and the Interface Region Imaging Spectrograph. The observatories targeted a chromospheric plage region of which the spatial distribution (split between strongly and weakly magnetized regions) allowed the study of linear-like structures in isolation, free of contamination from background emission. Using these observations in conjunction with a radiative magnetohydrodynamic 2.5D model covering the upper convection zone all the way to the corona that considers nonequilibrium ionization effects, we report the detection of an on-disk chromospheric spicule with ALMA and confirm its multithermal nature.
Can the Helium-detonation Model Explain the Observed Diversity of Type Ia Supernovae?
Authors: Li Wenxiong , Wang Xiaofeng , Bulla Mattia , Pan Yen-Chen , Wang Lifan , Mo Jun , Zhang Jujia , Wu Chengyuan , Zhang Jicheng , Zhang Tianmeng , Xiang Danfeng , Lin Han , Sai Hanna , Zhang Xinghan , Chen Zhihao , Yan Shengyu
Published: January 2021

We study a sample of 16 Type Ia supernovae (SNe Ia) having both spectroscopic and photometric observations within 2–3 days after the first light. The early B − V colors of such a sample tend to show a continuous distribution. For objects with normal ejecta velocity (NV), the C ii
λ6580 feature is always visible in the early spectra, while it is absent or very weak in the high-velocity (HV) counterpart. Moreover, the velocities of the detached high-velocity features (HVFs) of the Ca II near-IR triplet (CaIR3) above the photosphere are found to be much higher in HV objects than in NV objects, with typical values exceeding 30,000 km s−1 at 2–3 days. We further analyze the relation between the velocity shift of late-time [Fe II] lines (v
[Fe II]) and host galaxy mass. We find that all HV objects have redshifted v
[Fe II], while NV objects have both blue- and redshifted v
[Fe II]. It is interesting to point out that the objects with redshifted v
[Fe II] are all located in massive galaxies, implying that HV and a portion of NV objects may have similar progenitor metallicities and explosion mechanisms. We propose that, with a geometric/projected effect, the He-detonation model may account for the similarity in birthplace environment and the differences seen in some SNe Ia, including B − V colors, C II features, CaIR3 HVFs at early times, and v
[Fe II] in the nebular phase. Nevertheless, some features predicted by He-detonation simulation, such as the rapidly decreasing light curve, deviate from the observations, and some NV objects with blueshifted nebular v
[Fe II] may involve other explosion mechanisms.
Void Galaxies Follow a Distinct Evolutionary Path in the Environmental COntext Catalog
Authors: Florez Jonathan , Berlind Andreas A. , Kannappan Sheila J. , Stark David V. , Eckert Kathleen D. , Calderon Victor F. , Moffett Amanda J. , Campbell Duncan , Sinha Manodeep
Published: January 2021

We measure the environmental dependence, where environment is defined by the distance to the third nearest neighbor, of multiple galaxy properties inside the Environmental COntext (ECO) catalog. We focus primarily on void galaxies, which we define as the 10% of galaxies having the lowest local density. We compare the properties of void and non-void galaxies: baryonic mass, color, fractional stellar mass growth rate (FSMGR), morphology, and gas-to-stellar-mass ratio (estimated from a combination of H i data and photometric gas fractions calibrated with the REsolved Spectroscopy Of a Local VolumE survey). Our void galaxies typically have lower baryonic masses than galaxies in denser environments, and they display the properties expected of a lower mass population: they have more late types, are bluer, have a higher FSMGR, and are more gas-rich. We control for baryonic mass and investigate the extent to which void galaxies are different at fixed mass. Void galaxies are bluer, more gas-rich, and more star-forming at fixed mass than non-void galaxies, which is a possible signature of galaxy assembly bias. Furthermore, we show that these trends persist even at fixed mass and morphology, and we find that voids host a distinct population of early types that are bluer and more star-forming than the typical red and quenched early types. In addition to these empirical observational results, we also present theoretical results from mock catalogs with built-in galaxy assembly bias. We show that a simple matching of galaxy properties to (sub)halo properties, such as mass and age, can recover the observed environmental trends in ECO galaxies.
The Dispersion Measure and Scattering of Fast Radio Bursts: Contributions from the Intergalactic Medium, Foreground Halos, and Hosts
Authors: Zhu Weishan , Feng Long-Long
Published: January 2021

We investigate the dispersion measure (DM) and scattering of fast radio bursts (FRBs) by the intergalactic medium (IGM), foreground halos, and host halos using cosmological hydrodynamical simulation. We find that the median DM caused by foreground halos is around 30% of that caused by the IGM, but it has a much larger variance. The DM induced by hosts deviates from a log-normal distribution but exhibits an extended distribution in the range of

with a median value

. Then we produce mock FRB sources, assuming a uniform distribution in the range

, to consider the propagation effect of IGM, foreground, and host halos on FRB signals simultaneously. The DM distribution of mock sources agrees well with the observation. The fitted DM–redshift relation of the mock sources can provide a rough estimation of the redshifts of observed events with errors

. The distribution of mock sources in the DM scattering time (τ) space can also match the observation, assuming a Kolmogorov turbulence model where the inner and outer scales are 1000 km to 1 au and 0.2–10 pc, respectively. Finally, we estimate the relative importance of these media for DM and τ in our models. The IGM and host halos are the primary and secondary sources for the extragalactic DM (

). Meanwhile, the contribution from foreground halos increases as

increases. The host and foreground halos may be the most important media for scattering. Statistically, the latter may dominate the scattering of events with

.