bluuebunny/crossref_metadata_2025_split huggingface dataset:
On the issue of stability of the dynamic system of functioning of social network communities. Experiment with the model
Authors: Охапкина Е.П. , Мещеряков Р.В. , Исхакова А.О. , Исхаков А.Ю. 
Published: May 2022

В статье рассматривается динамическая система функционирования сообществ социальной сети и приводится набор численных экспериментов позволяющих проверить устойчивость системы дифференциальных уравнений. Система исследуется на устойчивость по методу функций Ляпунова. Определена зона допустимых значений параметров динамической системы. В результате проведенных численных решений системы нелинейных уравнений с управляющим динамикой системы параметром, были получены результаты, сравнимые с теоретическими, и, несмотря на некоторые неточности, достаточно хорошо описывающие особенности динамики рассматриваемой системы.Social networks are no longer used only as a tool for global communication of various segments of society in different countries. It is turned into a socio-political asset in the struggle for the specific interests of a group of people who can acquire and/or manage this asset. In the paper we use data of a number of communities of the Russian-Ukrainian segment of the social network «Vkontakte». The study formalizes one of the functional features of a social network: a community (group). The article considers the dynamic system of functioning of social network communities and provides a set of numerical experiments to test the stability of a system of differential equations. The system is investigated for stability by the method of Lyapunov functions. The zone of permissible values of dynamic system parameters is determined. As a result of numerical solutions of a system of nonlinear equations with a parameter controlling the dynamics of the system, results comparable to theoretical ones were obtained, and, despite some inaccuracies, sufficiently well describing the features of the dynamics of the system under consideration.
Modeling of radionuclide intake in humans living in the area affected by the Semipalatinsk test site
Authors: Романенко Е.В. , Умаров М.А. , Яковлев Г.А. 
Published: May 2022

В данной работе в качестве объекта исследования выбрано село Бодене в Бескарагайском районе Восточно-Казахстанской области Казахстана, так как оно находится близко к площадке испытательного ядерного полигона и обладает большим накопленным массивом данных по радиоэкологической обстановке. Как часть исследования было проведено анкетирование, позволившее составить статистику о населении села, а также об особенностях питания и видах деятельности постоянных жителей. В работе было проведено моделирование поступления техногенных радионуклидов в организм человека, проживающего и ведущего сельскохозяйственную деятельность на территории, подверженной влиянию Семипалатинского испытательного полигона. Приведены расчеты по поступлению радионуклидов с растительной и животной пищей, а также ингаляционным путем. Данные исследования позволяют составить оценки и прогноз дозовой нагрузки. При этом важно отметить, что превышения радиационных норм не было обнаружено. Загрязненная пища является основным фактором риска для здоровья человека, поэтому следует уделить большее внимание мониторингу дозовой нагрузки в радиоэкологически неблагополучных районах. Методика проведения исследования может быть использована и для контроля обстановки других населенных пунктов, а результаты расчетов данной работы, в дальнейшем могут быть использованы для сравнения с результатами биофизических измерений.
In this study, Bodene village in Beskaragai district of East Kazakhstan Oblast of Kazakhstan was chosen as an object of study because it is close to the site of the nuclear test site and has a large accumulated array of data on the radioecological situation. As part of the study, a questionnaire survey was conducted, which made it possible to compile statistics on the population of the village, as well as on the characteristics of the diet and activities of long-term residents. The work included modeling of technogenic radionuclide intake into a human organism living and carrying out agricultural activity on the territory affected by the Semipalatinsk test site. Calculations are given for intake of radionuclides with plant and animal food, as well as by inhalation. These studies allow to make an assessment and forecast of radiation burden. At the same time it is important to note that no exceedances ofradiation norms have been detected. Contaminated food is the main risk factor for human health, therefore more attention should be paid to monitoring of radiation burden in radioecologically unfavorable areas. The methodology of the study can also be used to control the situation of other settlements, and the results of calculations of this work, in the future, can be used for comparison with the results of biophysical measurements.
Assessment of efficiency of decontamination of oil and gas industry drilling wastes by chemical treatment of sludge samples with solutions of acids and alkalis
Authors: Шумило А.В. , Есильканов Г.М. , Яковлев Г.А. 
Published: May 2022

В настоящее время серьезную потенциальную опасность для геосистем нефтепромыслов и населения территорий населенных пунктов нефтегазодобычи, представляют отходы связанные с бурением нефтяных и газовых скважин. Наибольшая часть буровых шламов имеет минеральное происхождение, и зачастую может быть радиоактивной, имея в своем составе природные радионуклиды, концентрации которых могут доходить до уровней РАО. Данная работа несет экспериментальный характер по применению, и расчету эффективности методов химической дезактивации образцов буровых шламов растворами реагентов кислот и щелочей. Результаты полученные в основе эксперимента указывают на удовлетворительную эффективность применения таких методов по дезактивации минеральных материалов и представляют особый интерес в таких областях науки как радиационная геофизика, геохимия и радиоэкология.
Currently, a serious potential danger for geosystems of oil fields and the population of territories of settlements of oil and gas production is represented by wastes associated with drilling of oil and gas wells. The greatest part of the drilling cuttings has a mineral origin, and frequently can be radioactive, having in its structure the natural radionuclides which concentrations can reach the levels of RW. This work is experimental in its application and calculation of the effectiveness of methods of chemical decontamination of drill cuttings by acid and alkaline solutions. The results obtained on the basis of the experiment indicate satisfactory effectiveness of such methods for decontamination of mineral materials and are of particular interest in such fields of science as radiation geophysics, geochemistry and radioecology.
Computer experiment in teaching mathematical disciplines
Authors: Горюшкин А.П. 
Published: May 2022

Обсуждается методика использования компьютера при изучении вузовских курсов «Дискретная математика» и «Теория графов». В работе показывается применение пакета символьных вычислений Maple для обнаружения свойств основных матриц графа и экспериментальной проверки этих свойств.
The method of using a computer in the study of university courses «Discrete Mathematics» and «Graph Theory» is discussed. The paper shows the use of the symbolic computing package Maple to detect the properties of the main matrices of the graph and experimental verification of these properties.
Invariant manifolds and the global attractor of the generalised nonlocal Ginzburg-Landau equation in the case of homogeneous Dirichlet boundary conditions
Authors: Куликов А.Н. , Куликов Д.А. 
Published: May 2022

Рассматриваются два варианта обобщенного нелокального уравнения Гинзбурга-Ландау. Оба эти варианта изучаются вместе с однородными краевыми условиями Дирихле. Для соответствующих начально-краевых задач показано существование решений при всех положительных значениях эволюционной переменной. Для решений начально-краевых задач получены явные формулы в виде рядов Фурье. Изучены свойстварешений соответствующих начально-краевых задач. Во второй части работы рассмотрен вопрос о существовании глобальных аттракторов для решений изучаемых краевых задач. Изучен вопрос о свойствах глобальных аттракторов. В частности, дан ответ о евклидовой размерности таких аттракторов.Приведены достаточные условия, при которых глобальный аттрактор будет конечномерным. Выделен вариант нелокального уравнения Гинзбурга-Ландау, когда глобальный аттрактор будет бесконечномерным.
Two versions of the generalized nonlocal Ginzburg-Landau equation are considered. Both of these options are studied together with the homogeneous Dirichlet boundary conditions. For the corresponding initial-boundary value problems, the existence of solutions is shown for all positive values of the evolution variable. For solutions to initial-boundary value problems, explicit formulas are obtained in the form of Fourier series. The properties of solutions of the corresponding initial-boundary value problems are studied. In the second part of the work, the question of the existence of global attractors for solutions to the studied boundary value problems is considered. The question of the properties of global attractors is studied. In particular, an answer is given about the Euclidean dimension of such attractors. Sufficient conditions are given under which the global attractor will be finite-dimensional. A variant of the nonlocal Ginzburg-Landau equation is distinguished, when the global attractor is infinite-dimensional.
Hubungan Faktor Ergonomi dengan Keluhan Musculuskeletal Disorders (MsDs) pada Pekerja Pembuatan Ulos
Authors: Simorangkir Ros Perdawina , Siregar Santy Deasy , Sibagariang Eva Ellya 
Published: May 2022

<em>Musculoskeletal disorders (MSDs) are complaints that occur in parts of the muscleskeletal felt by someone ranging from a very mild complaint to very heavy complaints. One factory that has a risk of causing MSDs is Ulos factory. From the results of initial survey observations on 26 and 27 August 2019 at Siatas Barita Subdistrict, North Tapanuli Regency there were 75 workers, which at the time In the initial survey I interviewed 25 workers using a questionnaire and observations and results that can be obtained there are 20 workers experiencing complaints MSDs, especially in the neck, waist, buttocks, and calves. The purpose of this study is to find out Relationship of Ergonomic Factors with Musculoskeletal Disorder (MSDS) Complaints in Workers Making Ulos in Siatas Barita Subdistrict, North Tapanuli Regency in 2019. Type This research is an analytic survey with cross sectional design. Research population is a number of weaving workers in Siatas Barita District, North Tapanuli Regency 75 people. The research sample is workers in Enda Portibi Village, Siatas Barita District North Tapanuli Regency numbered 75 people, obtained using total sampling. The results of this study were analyzed using the chi square test with significance 95% (0.05). The results showed that there was a relationship between work duration, work period, work posture, with complaints of Musculoskeletal Disorders in workers making ulos with each chi-square test results obtained p value 0.029, 0.005, 0.004, The conclusion of this research is that there is a relationship between the length of work, length of service, posture Working with complaints of Musculoskeletal Disorders of weaving workers in the District of Siatas Barita North Tapanuli Regency in 2020. </em>
Trend Penyakit Demam Berdarah Dengue (DBD) di Sulawesi Tenggara Berbasis Ukuran Epidemiologi
Authors: Irma Irma , Masluhiya AF Swaidatul 
Published: May 2022

<p align="justify">Until now, Dengue Hemorrhagic Fever (DHF) is still a public health problem whose number of sufferers continues to increase from year to year and its spread is increasingly widespread. DHF cases are also still endemic and continue to spread in several districts / cities in Southeast Sulawesi Province. This research is a descriptive qualitative research with a population and the sample used is all data on DHF cases from the Southeast Sulawesi Provincial Health Office from 2015 to 2019 as many as 7142 cases. The data that has been collected is then analyzed with the help of the SPSS program to describe the trend of DHF cases based on epidemiological measurements. The results of this study indicate that trend of DHF cases in Southeast Sulawesi based on prevalence rates, Isidence Rate (IR) and Case Fatality Rate (CFR) in the last 5 years from 2015 to 2019 has fluctuated. The trend of DHF cases in Southeast Sulawesi peaked in 2016 year with a prevalence of 0.122% and an IR of 122.3 per 100,000 population while the CFR rate peaked in 2017 year at 1.01%.</p><p align="justify"> <strong>Keywords</strong>: CFR, DHF, epidemiological, IR, prevalence, trend</p>
Faktor yang memengaruhi Perilaku Masyarakat Pencegahan Penyakit ISPA di Puskesmas Madat Kabupaten Aceh Timur
Authors: Faisal Faisal , Nuraini Nuraini , Anto Anto 
Published: May 2022

<p><em>Acute Respiratory Infections (ARI) is one of the most infectious diseases and causes of death in children in developing countries. Based on the researchers' initial survey, it was found that the number of ARIs in Madat Community Health Center was 1971 people</em><em>. The </em><em>purpose of this study is to determine the factors associated with the implementation of the behavior of prevention of ISPA in infants in Madat District Health Center, East Aceh. T</em><em>he research design used in this study was Cross Sectional. The population in this study were 362 people and samples taken by accidental sampling were as many as 52 people. Data collection methods are primary data and secondary data. Data analysis used is binary logistic regression test.</em><em> </em><em>T</em><em>he results showed that knowledge had a sig-p value of 0.010 &lt;0.05, sig-p ventilation 0.002 &lt;0.05 and health services had a sig-p value of 0.010 &lt;0.05. Based on the overall influencing factors, the most dominant factor affecting ARI is ventilation with a B value (4,489).</em><strong><em> T</em></strong><em>he conclusion in this study is that there is the influence of knowledge, ventilation and health services with the application of community behavior in the prevention of ARI, while the variables of occupancy density and family history of women do not have an influence on community behavior in the prevention of ARI.</em><em></em></p><em>Keywords: behavior factors, disease prevention, acute respiratory, ISPA</em>
Potensi Bakteri Endofit Andaliman (Zanthoxylum Acanthopodium DC.) Menghambat Bakteri Penyebab Infeksi pada Manusia
Authors: Rizqoh Debie , Kumala Wulan Okta , Sipriyadi Sipriyadi , Sinuhaji Besly , Oktoviani Oktoviani 
Published: May 2022

<em>Endophytic bacteria are a beneficial bacteria that live in plant tissue. Several studies have shown that certain endophytic bacteria can produce secondary metabolites that have health effects. The andaliman (Zanthoxylum acanthopodium DC) have several properties, one of which is as antibacterial against pathogenic bacteria. The most common bacterial infections in humans are caused by commensal bacteria in the body such as Escherichia coli and Staphylococcus aureus. This study used a qualitative data collection method with the type of experimental laboratory research to isolate the endophytic bacteria andaliman which had been tested against the pathogenic bacteria Escherichia coli and Staphylococcus aureus. The initial stage were isolation of endophytic bacteria and observation of colony characteristics, after obtaining isolates with different colony characteristics, a Gram stain test and a antagonist test for pathogenic bacteria were carried out. In this study, 252 colonies grew and there were 85 isolates with different colony characteristics. From all the isolates, there were two isolates that could inhibit the growth of Escherichia coli and seventeen isolates that could inhibit the growth of Staphylococcus aureus.</em>
Implementasi Kebijakan Kawasan Tanpa Rokok (KTR) di SMA Negeri 17 Medan
Authors: Khairatunnisa Khairatunnisa , Telaumbanua Iska Putra 
Published: May 2022

<p><strong><em>Introduction:</em></strong><em> Medan City Government has Regional Regulation No. 3 of 2014 concerning No-Smoking Area, the aim is to create a clean and healthy space and environment. In fact there are still those who violate the regulations of the Local Government where one of the teaching and learning process in SMA 17 Medan, there are still smoking. <strong>Objective:</strong>Research is descriptive qualitative. Research informants consisted of school principals, teachers, students and security guards. <strong>Results</strong>: The implementation of the No Smoking Area policy in SMA 17 Medan has not run optimally due to 4 factors, namely: Communication factors, lack of socializing the application of No-Smoking Area; the resource factor, the lack of facilities and infrastructure for the application of No-Smoking Area and the absence of specific guidelines as information for implementing the policy; Disposition factors, lack of commitment from policy implementers; and bireaucratic factors, there is no formation of policy making groups, no evaluation of the application of No-Smoking Area is carried out.<strong>Suggestion</strong>: The Medan City Education Office increased No-Smoking Area socialization, increased supervision, imposed sanctions on schools that did not implement No-Smoking Area. To the school, to increase No-Smoking Area socialization, apply strict sanctions and form a No-Smoking Area policy-making working group.</em></p><p><strong><em> </em></strong></p><p><strong><em>Keywords: Implementation, No-Smoking Area.</em></strong><strong><em></em></strong></p>
Biosorption of Lead (II) by Natural Bentonite: Adsorbent Characterization and Performance Assessment
Authors: Karić Amna , Odobašić Amra , Avdić Gordan , Papraćanin Edisa , Panić Sanja 
Published: May 2022

In this research, the results of bentonite characterization (pH value of bentonite suspension, point of zero charge, cation exchange capacity, SEM, XRF, DTG) are presented. The results of lead (II) removal efficiency at initial lead (II) concentrations of 200, 300 and 400 mg/L, and biosorbent dosage of 1 gram in 50 ml of lead(II) solution, are also presented, as well as the values of the Freundlich and Langmuir constants from the Freundlich and Langmuir adsorption isotherms. The obtained results showed that removal efficiency is high for all three examined initial lead (II) concentrations, and it is above 99%. The lead (II) removal efficiency slightly decreases with an increase in initial lead concentration. Experimental data obtained from adsorption experiment with contact time of 2.5 minutes, stirring rate 100 rpm, temperature 250C and pH value 5 are better fitted with the linearized Langmuir equation isotherm, giving an R2 value closest to unity (0.9994), than to linearized Freundlich equation (0.9886).
Study of Interaction of Loamy Soil with Salts of Heavy Metals in Assessment of Groundwater Contamination
Authors: Raju V. John  
Published: May 2022

A major environmental problem is the risk of metal pollution of surface and groundwater due to leaching from polluted land-based solid wastes. The goal of this research is to figure out what happens when heavy metals interact with sandy and silty loam soils, and how that affects groundwater quality. As the sorption decreased in the order Mn> Fe> Ni > Cr> Zn> Cu> Pb> Cd. The leaching order should be reverse of it. As a result, Cd is less well held by soils than the other hazardous cations, and hence poses a greater risk of polluting groundwater due to its severe toxicity. The metals Zn, Cu, Pb, and Cd were shown to be significantly more mobile than the other four. The retention of metals became weaker as the concentration of metals increased. This points to the probability of groundwater contamination as a result of land infill. As a result, at all polluted sites in Agra, they should be properly monitored. Metals are more sorbed on silty loam than on sandy loans because the former has higher organic matter, clay, monmorillonite contents, CEC and surface area. Because the majority of the soil in Agra is sandy loam, it is recommended that all wastes containing heavy metals be treated before being disposed of in loamy formations.
Review of the Factors of Trust or Distrust in News Media
Authors: Shahryar Bahrooz  
Published: May 2022

The trust of audiences in media comes from their trust in media news. Communication studies experts believe that the symbol of trust in the media should be seen in terms of increasing trust in news and media news programs. Since trust can influence general thoughts, it should be considered separately in each media organization based on the type of organization. The more citizens believe in the authenticity of a particular type of media, the more likely they are to be influenced by their thoughts. Numerous studies in the field of social psychology show that authentic sources have more persuasive power than the sources that are less trusted by their audiences.
Since the media have a mediating role in the transmission of news and information, they are a kind of link between the government and the people and have a great impact on the convergence and divergence of the people and the government. The success of any program depends entirely on gaining the trust of the people, so the effects of the media should exist in a way that can increase the coefficient of trust and confidence among the people, and if the current situation is such that this coefficient works in the opposite direction, it should think of solutions and reform. Thus, the discussion of news engineering is analyzed based on recognizing the components of building trust, but it is necessary before recognizing the audience because it is the perception of the audience and the level of their trust that creates the media reputation and determines their position.
INTER-ANNUAL DYNAMICS (2001-2020) OF CASHEW CROP IN THE MUNICIPALITY OF JACARAÚ, PARAÍBA
Authors: Souza Júnior Silvio Lisboa de , Pereira Daniel Duarte , Cartaxo Paulo Henrique de Almeida , Araújo José Rayan Eraldo Souza , Santos João Paulo de Oliveira 
Published: May 2022

Cashew farming is an activity of great economic importance for many areas of the Northeast of Brazil. In the state of Paraíba, the seventh-largest producer of cashew nuts in Brazil, a municipality of prominence in cashew culture is Jacaraú, known regionally for its production of cashew nuts. In this sense, this study aimed to analyse the productive dynamics of cashew production in Jacaraú in the period from 2001 to 2020, seeking to analyse the performance and the factors that interact in this production chain. The data were obtained from the database of the Municipal Agricultural Survey of the IBGE, from which five variables were extracted: harvested area – the percentage of the total, harvested area, quantity produced, productivity, and value of production. The cashew culture is an agricultural activity of great relevance for Jacaraú, with strong participation in the total percentage of the areas harvested with permanent crops in this municipality; however, a strong reduction in the area harvested with this crop was registered, as well as in the quantity produced. The results together show improvements in the production variables in the last two years of the period under analysis, derived mainly from improved productivity and that are a consequence of government efforts to strengthen this production chain. However, these actions need to be continuous and focus on the introduction of more productive and early materials, as well as management strategies suitable for this crop.