bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of methodological support for improving the quality of expert assessment of business processes
Authors: Antoshchuk Vitalii , Filippov Volodymyr , Kuvaieva Varvara
Published: March 2021

The object of research is the process of forming a collective expert assessment with increased reliability in making management decisions in business structures by an expanded team of experts. One of the most problematic places in the expert assessment of management decisions is the complexity of forming a competent expert team and the rather high cost of the expertise. In recent years, there has been a tendency for expert assessment with an expanded team of experts. In this case, not only professional experts are involved in the examination, but also all persons wishing to take part in solving the problem. In this case, the reliability of the examination raises doubts. In connection with the participation in expert assessment of persons who do not have experience in expert work, a wide range of expert assessments is possible. The analysis of the current state of the methods of expert assessment in business is carried out. It has been established that the Delphi method, which was most used until recently, does not meet modern requirements. More progressive methods are based on mathematical consensus theory. Consensus is understood as the degree of correlation of individual expert assessments performed in rank scales. In the course of the study, formalized mathematical approaches to the organization of collective expertise were used. A method for processing the results of an examination with an expanded composition of experts was developed. The developed methodology is focused on identifying experts with insufficient qualifications. The methodology allows for a step-by-step assessment of the reliability of the collective expert decision by assessing the Kendall concordance coefficient. It is shown that the phased exclusion of assessments by experts with insufficient qualifications allows increasing the level of consensus, the quality and reliability of the collective expert assessment. The developed methodology has been tested in a really functioning enterprise to make a decision on the exit strategy of the enterprise from their crisis. The use of the developed methodology has made it possible to significantly increase the reliability of the examination results, assessed by the concordance coefficient. The results are useful for practical application in business structures when conducting expert examinations involving a wide range of participants.
Determination of the dynamic load of the carrying structure of the hopper wagon with the actual dimensions of structural elements
Authors: Fomin Oleksij , Lovska Alyona , Skok Pavel , Rogovskii Ivan
Published: March 2021

The object of research is the supporting structure of the pellet wagon with the actual dimensions of the supporting elements. One of the most problematic areas is the determination of the indicators of dynamics and strength of the supporting structure of the hopper wagon with the actual dimensions of the structural elements.
A study of the dynamic loading of the supporting structure of the hopper wagon was carried out. At the same time, the actual dimensions of the structural elements were determined by means of field studies. Mathematical modeling of the dynamic loading of the load-carrying structure of a hopper wagon with the actual dimensions of structural elements was carried out by means of mathematical modeling. The studies were carried out in a flat coordinate system. The presence of three degrees of freedom of the supporting structure of the hopper wagon was taken into account: vibrations of twitching, bouncing and galloping. Differential equations were solved in the MathCad software package. In doing so, they were reduced to the Cauchy normal form, and then integrated using the Runge-Kutta method. It was found that the maximum value of the acceleration acting on the supporting structure of the hopper wagon is 38.5 m/s2, which is 2.7% higher than the acceleration of the supporting structure with nominal dimensions.
Computer simulation of the dynamic loading of the supporting structure of the hopper wagon was carried out. The calculation was carried out using the finite element method in the SolidWorks Simulation (CosmosWorks) software package. It was found that the maximum accelerations are concentrated in the middle part of the supporting structure of the hopper wagon and amount to 36.2 m/s2. The F-criterion was used to verify the developed model. The calculations showed that the calculated value of the criterion is Fc = 1.09 and is less than the table value Ft = 3.29. The adequacy hypothesis is not rejected.
The natural frequencies and vibration modes of the hopper wagon supporting structure were determined. It has been established that the values of natural vibration frequencies of the hopper wagon bearing structure with the actual dimensions of the structural elements are within the permissible limits.
The research will contribute to the creation of relevant developments to extend the service life of wagons that have exhausted their standard resource, as well as to increase the efficiency of railway transport operation.
Influence estimation of the inclination angle of the top of the noise protection barrier on its efficiency
Authors: Zaets Vitaly
Published: March 2021

The object of research is the sound field from linear sound sources around a rounded noise barrier of the same height and different angles of inclination of the top part of the barrier. It is known that the effectiveness of noise protection barriers depends primarily on the geometric dimensions of the barrier and the relative position of the sound source, barrier and area of noise protection. A large number of publications have been devoted to the study of the influence of these factors and some others, such as the influence of the earth's surface, sound absorption, sound insulation of the barrier. However, these works did not study the effect of the angle of the top part of the barrier on the change in the barrier efficiency.
In this paper, the reduction of sound levels from linear sound sources around noise barriers with different inclination angle of the top part of the barrier is investigated. Rounded barriers of the same height with different radii are considered, which made it possible to simulate barriers in which the top part of the barrier has a different inclination angle. An effectiveness of such barriers for various locations of the sound source, which could also affect the establishment of a pattern of changes in the effectiveness of barriers, is also considered. In addition, the results were analyzed over a wide frequency range. The calculation of the field around such a barrier was carried out using computer simulation using the finite element method. This method allows to easily change the geometric parameters of the barrier and the position of the sound source. The barriers were considered acoustically hard.
Thus, an influence of the inclination angle of the top part of the barrier on the sound field around the barrier from various locations of sound sources in a wide frequency range is analysed. The results must be taken into account when designing noise barriers to reduce noise levels from traffic flows
Solution of the compromise optimization problem of network graphics on the criteria of uniform personnel loading and distribution of funds
Authors: Domina Olena
Published: March 2021

The object of research is a model network schedule for performing a complex of operations. One of the most problematic areas is the lack of a unified procedure that allows finding a solution to the problem of compromise optimization, for which the optimization criteria can have a different nature of the influence of input variables on them. In this study, such criteria are the criteria for the uniformity of the workload of personnel and the distribution of funds. Two alternative cases are considered: with monthly planning and with quarterly planning of allocation of funds and staff load.
The methods of mathematical planning of the experiment and the ridge analysis of the response surface are used.
The peculiarities of the proposed procedure for solving the problem of compromise optimization are its versatility and the possibility of visualization in one-dimensional form – the dependence of each of the alternative criteria on one parameter describing the constraints. The solution itself is found as the point of intersection of equally labeled ridge lines, which are curves that describe the locally optimal values of the output variables.
The proposed procedure, despite the fact that it is performed only on a model network diagram, can be used to solve the trade-off optimization problem on arbitrary network graphs. This is due to the fact that the combination of locally optimal solutions in a parametric form on one graph allows visualizing all solutions to the problem. The results obtained at the same time make it possible to select early dates for the start of operations in such a way that, as much as possible, take into account possible difficulties due to the formation of bottlenecks at certain stages of the project. The latter may be due to the fact that for the timely execution of some operation, it may be necessary to combine two criteria, despite the fact that the possible costs may turn out to be more calculated and estimated as optimal.
Evaluation of oxidity resistance of milk-containing products based on blending of vegetable oils
Authors: Belemets Tatiana , Radzievskaya Irina , Tochkova Oksana , Yushchenko Nataliia , Kuzmyk Uliana , Mykhalevych Artur
Published: March 2021

It is known that one of the main causes of spoilage of fats (in particular vegetable fats), as well as products made with their use, is an increase in acid and peroxide numbers. Physicochemical indicators have a significant impact not only on the quality and organoleptic characteristics of the product, but also on its safety. For this purpose, the dependence of the indicators of acid and peroxide numbers of the created blend of vegetable oils in the technologies of milk-containing products during storage has been investigated. The object of research is experimental samples of a three-component blend of vegetable oils and milk fat isolated from milk-containing curd paste and milk-containing sour cream sauce. The subject of research is the dynamics of the growth of acid and peroxide numbers of samples and changes in their organoleptic quality indicators.
The obtained data on the kinetics of oxidation of a blend of vegetable oils indicate that the increase in acid and peroxide numbers during the studied shelf life does not differ in intensity. The average threshold for an increase in acid and peroxide numbers is insignificant and amounts to 0.02–0.03 mgKOH/h and 0.2–0.21 mmol1/2O/kg for 5 days. In accordance with the obtained results of the kinetics of oxidation of the released fat of milk-containing curd paste, there is a slight increase in acid and peroxide numbers, namely: at the end of 7 days – up to 0.3 mgKOH/h and 1.9 mmol1/2O/kg, respectively, and in at the end of 10 days– up to 0.32 mgKOH/h and 2.3 mmol1/2O/kg. Based on the obtained results of the kinetics of oxidation of the released fat from the milk-containing sour cream sauce, there is a tendency to a gradual increase in the acid and peroxide numbers with an increase in the oxidation time. It is noted that the maximum values of acidic – 0.3 mgKOH/h and peroxide numbers – 2.2 mmol1/2O/kg at the end of the shelf life of 21 days are reached. According to the results obtained for the organoleptic evaluation of experimental samples of the blend and the released fat from milk-containing products, no significant changes were found during the studied shelf life.
Energy spectrum and density of states in 3d-transient metals and alloys
Authors:   Biysk Technological Institute (branch) of the Altay State Technical University, Kizhaev F.G. , Medvedev N.N. ,   Biysk Technological Institute (branch) of the Altay State Technical University, Starygina O.V. ,   Biysk Technological Institute (branch) of the Altay State Technical University
Published: March 2021

In this paper, the formation of the magnetic moment, the energy spectrum and the density of States of d -electrons in transition metals are considered in the framework of a two-zone s - d model based on a generalized crystalline Hamiltonian. It is shown that taking into account the multiplicity of the degeneration of s - d electrons in the Hamiltonian leads to an additional exchange-correlation interaction ( U - K ), which together with the correlation interaction determines the electronic structure of d -metals. In this case, there is a three-peak density of States, which turns into a two-peak, if we exclude the exchange-correlation interaction.
Structure formation of concrete matrix modified by non-standard particles
Authors:   Tomsk State University of Architecture and Building, Shekhovtsov V.V. , Vlasov V.A. ,   Tomsk State University of Architecture and Building, Skripnikova N.K. ,   Tomsk State University of Architecture and Building, Semenovykh M.A. ,   Tomsk State University of Architecture and Building
Published: March 2021

The paper presents theoretical and experimental results of the concrete matrix formation during the introduction of non-standard particles in the dispersion phase in the amount of 0 ≤ k ≥ 0.5. It is found that the space frame structures that appear and develop in concrete dispersion systems are occupied by the non-standard particles at varying degrees. The introduction of non-standard particles in the concrete matrix causes the formation of strong structural bonds due to the particle interaction via the adsorption and diffusion layers. The latter appear during the formation of sub-microcrystalline structure of helium covered with newly formed dispersion systems (C-S-H). This is because the high FeO content in the initial composition of non-standard particles that affects the particle bonding in the dispersion phase. The dispersion phase particles have the high electrostatic and electromagnetic attraction and form crystallization nuclei at the phase boundaries.
About magnetoelectric effect in a two-layer system ferromagnetic-piezoelectric
Authors:   Federal State Official Military Educational Institution of Higher Education «Military Educational and Scientific Centre of the Air Force N.E. Zhukovsky and Y.A. Gagarin Air Force Academy» (Voronezh) the Ministry of Defence of the Russian Federation, Nechaev V.N. , Shuba A.V. ,   Federal State Official Military Educational Institution of Higher Education «Military Educational and Scientific Centre of the Air Force N.E. Zhukovsky and Y.A. Gagarin Air Force Academy» (Voronezh) the Ministry of Defence of the Russian Federation
Published: March 2021

The theory of the direct magnetoelectric (ME) effect in a two-layer ferromagnet-piezoelectric structure is presented, differing from [1-4] is accurate accounting the heterogeneity of electric field through the thickness of the layer. The simultaneous solution of the equations of motion for the piezoelectric and ferromagnetic media made it possible to calculate numeral analytically the dependence of the frequency of the system's own mechanical oscillations on its parameters and determine the frequency dependence of the coefficient ME effect, and the consideration of system dissipative properties made it possible to estimate the maximum value of the coefficient ME coupling. The influence of the ME layer length on the structure natural frequencies and the coefficient of ME coupling is analyzed.
Diffraction-ray optics of femtosecond laser pulses under normal dispersion conditions in air
Authors:   Zuev Institute of Atmospheric Optics SB RAS, Geints Y.E. , Zemlyanov A.A. ,   Zuev Institute of Atmospheric Optics SB RAS, Minina O.V. ,   Zuev Institute of Atmospheric Optics SB RAS
Published: March 2021

The results of a theoretical study of the propagation of femtosecond pulses of a Ti:Sa laser under normal dispersion conditions in air are presented. The use of the diffraction-beam tube method for the analysis of numerical solutions of the nonlinear Schrödinger equation in a dispersion medium with Kerr-plasma nonlinearity made it possible to determine the basic regularities of femtosecond laser pulses self-focusing and filamentation in air at various pulse lengths, initial beam radius, and peak powers. It is shown that in the case of the group velocity dispersion influence with an increase in the initial laser beam radius, the filamentation breaks down even at large supercritical powers. It is shown that with an increase in the dispersion distortions of the pulse the radius of the energetically replenishing diffraction beam tube, the angular divergence of the post-filamentation light channel, and the nonlinear focus coordinate normalized to the Rayleigh length for the central time layers of the laser pulse and the integral picture are increasing.
Permittivity spectra and structure of d-bands of germanium telluride, tin telluride and lead telluride
Authors:   LLC «Izhevsk Radio Plant», Perevoshchikov D.A. , Sobolev V.Val. ,   Kalashnikov Izhevsk State Technical University, Kalugin A.I. ,   Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences, Antonov E.A. ,   Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences
Published: March 2021

Based on the experimental absorption spectra, the permittivity spectra of GeTe, SnTe, and PbTe crystals were obtained in the region of electron transitions from core d -bands of cations. Their specific features and general behavior are revealed. The permittivity spectra of each crystal were decomposed into six elementary components and their main parameters were determined by using of combined Argand diagrams method. Based on the theory of interband and exciton transitions, the nature of the formation of these oscillators was proposed.
Methods of preparation and temporal stability of GaSe and InSe nanolayers
Authors:   Tomsk State University (Tomsk, Russian Federation), Redkin R.A. , Kobtsev D.A. ,   Tomsk State University (Tomsk, Russian Federation), Bereznaya S.A. ,   Tomsk State University (Tomsk, Russian Federation), Korotchenko Z.V. ,   Tomsk State University (Tomsk, Russian Federation), Novikov V.A. ,   Tomsk State University (Tomsk, Russian Federation), Sarkisov S.Y.U. ,   Tomsk State University (Tomsk, Russian Federation)
Published: March 2021

GaSe and InSe nanolayers were obtained by mechanical exfoliation and physical vapor deposition methods on silicon substrates. Employing atomic force microscopy the surface morphology and thickness of obtained InSe and GaSe nanolayers were studied, as well as their temporal stability. The observed spectral positions of the Raman peaks were in agreement with the position of the peaks known for bulk and nanolayered InSe and GaSe samples
About the influence of porous coating fluid saturation on the mechanical behavior of the coating-substrate system under contact loading
Authors:   Institute of Strength Physics and Materials Science of SB RAS, Smolin A.Yu. , Eremina G.M. ,   Institute of Strength Physics and Materials Science of SB RAS
Published: March 2021

The problem of the influence of the porous coating saturation with a fluid on the mechanical properties of both the coating and the coating-substrate system as a whole is considered. An important practical application of the problem under consideration is wear-resistant coating of endoprostheses of human large joints. Based on the method of movable cellular automata, a three-dimensional model of the mechanical behavior of a porous fluid-saturated coating on a titanium substrate is constructed. The effect of fluid saturation of the surface layer of a ceramic coating on the mechanical characteristics of the coating-substrate system was numerically studied. The simulation results show that the presence of fluid in a thin surface layer of the coating can have a significant effect on the mechanical response of the entire coating-substrate system at sufficiently high rates of local contact loading. Thus, calculations without taking into account the interstitial fluid lead to an overestimation of the strength and hardness of the materials with coatings in wetting conditions. Scratch simulations show that a fluid-saturated surface layer possesses higher resistant to wear.
Тенденции в избирательности браков по уровню образования: роль изменений в образовательной структуре населения
Authors: Зинченко Дарья Игоревна , Лукьянова Анна Львовна
Published: March 2021

В работе, основанной на данных РМЭЗ ВШЭ за 1995–2015 гг., анализируется влияние роста уровня образованности российского населения на состояние в браке и изменение состава семей с точки зрения уровня образования супругов. Результаты показывают снижение доли состоящих в браке для обоих полов, всех образовательных и практически всех возрастных групп, при этом увеличение доли одиноких не является прямым следствием трендов в сфере образования. Выявлено, что изменения в образовательном составе населения сдерживали сокращение доли состоящих в браке благодаря росту удельного веса высокообразованных групп, в которых выше процент состоящих в браке. В структуре браков наблюдалось увеличение доли союзов, в которых мужья имеют более низкий уровень образования (гипогамия). Распространение таких браков происходило за счет сокращения доли пар, в которых партнеры имеют одинаковое образование, хотя последний тип союзов по-прежнему остается самым распространенным видом брака. Корректировка на тренды в образовательной структуре населения позволяет сделать вывод, что для большинства возрастных групп изменения в образовательной структуре являлись главным драйвером усиления гипогамии.
Accuracy of Digital Impression Taking Using Intraoral Scanner Versus the Conventional Technique
Authors: Zarbakhsh Arash , Jalalian Ezatollah , Samiei Nazanin , Mahgoli Mohammad Hossein , Kaseb Ghane Hadi
Published: March 2021

Objectives: Intraoral scanners have shown promising results when used as an adjunct or alternative to conventional impression techniques. This study compared the accuracy of digital impression taking using an intraoral scanner versus the conventional technique.
Materials and Methods: In this in-vitro experimental study, a typodont molar tooth was prepared as the standard model and scanned by TRIOS intraoral scanner. Ten digital impressions were fabricated as such and intraoral scans were sent to the manufacturers. In the conventional method, using addition silicone impression material, a stone die was fabricated. Using a computer-aided design/computer-aided manufacturing scanner, the die was scanned, and the data were transferred to the software. After the fabrication of frameworks, the replica technique was used. The replicas’ thickness (indicative of the gap between the framework and the model and the accuracy of impression taking) was 12 points. The data were analyzed using student's t-test.
Results: The mean thickness of replicas (gap between the internal surface of frameworks and the standard model) at the three points in the buccal, lingual, mesial, and distal sections in the digital impression technique was lower than that in the conventional technique (P<0.0001). In other words, the accuracy of impressions taken by the digital method was significantly higher than those taken by the conventional method.
Conclusion: Intraoral digital scanner had significantly higher accuracy than the conventional method in all points. Thus, the digital method can be reliably used as an adjunct or alternative to the conventional method to increase the accuracy of impression taking.
Covid-19 and Dealing with it: Lessons Learned in a Pre-Hospital Emergency System of Yazd
Authors: Afzali Fatemeh , Dehghan Ahmad , Pahlavanpoor Saeedreza , Baghbeheshti Maryam
Published: March 2021

The article's abstract is not available.
Teamwork Approach in Lifestyle Modification in a Health Clinic: A Perspective Study
Authors: Ferdosi Masoud , Kolahdouzan Majid , Nikkar Isfahani Behnaz , Kolahdouzan Arman , Kolahdouzan Mohammad Shayan
Published: March 2021

Chronic diseases have become an acute challenge in health. Providing a framework for the transformation of services could be very helpful. In this study, the teamwork services based on lifestyle modification used in a series of Health Clinics in Isfahan (Iran); have been reported as a desirable method in the treatment of metabolic Syndromes. "Iranian Health Clinics" have been providing services in the fields of lifestyle modification, promoting healthy lifestyles, diagnosing and treating metabolic syndromes such as diabetes, hypertension, hyperlipidemia, as well as weight regulation and stabilization. This clinic series offers its services as a team of psychologists, nutritionists, physical trainers, and physicians. Treatment of metabolic syndromes by the team-based method as well as continuing contact with patients in the courses of treatment, stabilization, and training of health ambassadors can be instrumental in consolidating the results using this framework in the control of metabolic syndromes.
Comparison of Factors Associated with the Neonatal Mortality Rate in Fars Province before and after Implementing the Health Section Evolution: A Retrospective Cross-Sectional Study
Authors: Alimohammadzadeh Khalil , Falahati Farshad , Karami Hassan , Parsa Hamidreza , Shirvani Shiri Maryam , Erami Atila , Eskandari Kootahi Zahra , Erfani Maliheh
Published: March 2021

Background: The neonatal period or the first 28 days after birth is a critical and vulnerable time for a child period, and the mortality rate is high due to the severe problems which might happen during this period. The goal of this study was to compare the risk factors associated with the neonatal mortality rate (NMR) before and after the implementation of the health sector evolution plan (HSEP) in Fars Province, Iran.
Methods: This study was a retrospective cross-sectional study. This research was conducted using the census method, and 275951 newborns’ files were studied. Variables are expressed as percentage and frequency. The chi-square test and Fisher tests was used to measure the significance level of variables. A multivariate logistic regression model was also used to estimate the odds ratio of neonatal mortality and risk factors associated with neonatal mortality. All statistical tests were performed bilaterally with P-value < 0.05 considered as significant. All tests were conducted using the software SPSS19.
Results: After HSEP, risk factors of pregnancy and delivery complications were significantly reduced, and abnormalities were significantly increased (P-value < 0.001). Using multivariate logistic regression analysis, the risk of death is nine times more in gestational age below 37 weeks compared to gestational age over 37 weeks. The chances of neonatal mortality among neonates weighing less than 1000 grams are much more, and it is about 140 times more than normal weight (over 2500 grams). There was not a significant relationship between the chance of neonatal mortality and the implementation of HSEP (P-value > 0.05).
Conclusion: Neonates with abnormal weight and premature neonates had the highest chance of death. Therefore, the prevention of preterm labor and low-birth-weight infants are essential factors in reducing neonatal mortality. This study suggests that improved health service quality is determinative to decrease neonatal mortality rate.
The People’s Right To Choose their Healthcare Services: View Point of Health Managers
Authors: Parnian Elaheh , Aboutorabi Ali , Sheikhy-Chaman Mohammadreza , Sakhidel Hovasin Arya , Soltani Zanyar
Published: March 2021

Background: People, as the main recipients of healthcare services, consider themselves entitled to the right to choose in the health system. This study aimed to investigate people’s right to choose and freedom about healthcare services from healthcare managers’ perspective.
Methods: This qualitative study was conducted in 2020. Data were collected through semi-structured interviews with 15 healthcare managers. Then, the snowball sampling method continued until data saturation level was achieved. All interviews were recorded, analyzed, and the main themes were extracted. MAXQDA10 was used for data analysis using content analysis method.
Results: The people’s rights to choose their healthcare services were categorized into five main themes: people’s awareness of their right to choose, freedom of choice regarding receiving or not receiving services, government guidelines and policies, choice of hygienic services and medical services in a special way, and barriers to free access to services.
Conclusion: Recently, more attention is paid to social values in health systems than in the past, and people have more freedom and choices. On the other hand, to strengthen social justice foundations, there is a need for comprehensive policies and planning in various aspects.
Constitutional Principles of Legal Regulation of Court Fees in Ukraine
Authors: Buryi Vladyslav
Published: March 2021

This article presents a comparative analysis of the provisions of the Constitution of Ukraine and the Law of Ukraine “On Court Fees”.The author emphasizes that the Constitution of Ukraine establishes an axiological basis for the legal regulation of the court fees and, at the same time, defines the relevant categories of cases, access to judicial protection in which should not be the subject to significant restrictions or should not be limited at all, namely in the cases of: challenging the decisions, actions or omissions of public authorities, local governments and officials; protection of the right to own property; protection of honour and dignity and business reputation; free access to the information about the state of the environment, the quality of food and household items, and others. The court fee in the constitutional justice is also singled out, which is substantiated by the special procedural and essential nature of the constitutional complaint. The author disputes the possibility of implementation of the court fee for filing a constitutional complaint, the doubtfulness of which is explained by the normative form of the constitutional complaint that does not provide a direct review of the court decision. Emphasis is placed on the provisions of the Constitution, which support the need to reform the existing concept of regulation of court fees, in particular the change in access to appeals and cassation appeals from progressive to the regressive court fee rate. It is emphasized that the Law of Ukraine “On Court Fees” does not fully comply with the Constitution of Ukraine. It is concluded that the Constitution of Ukraine provides the individualization of the amount of court fees that should depend on the stage of the proceedings, the category of the case, and the relevant range of entities that should be exempt from the court fees.
The Legal Approach to the Provocation of Bribe as a Variety of Provocation of Crime in Case-law of the European Court of Human Rights
Authors: Buromenskiy Mykhaylo , Gutnyk Vitalii
Published: March 2021

The article gives a legal assessment of “provocation of bribe” as a kind of “provocation of crime”. The authors examine the relevant case-law of the European Court of Human Rights (ECHR) and find that the Court does not consider “provocation of bribe” as a provocation of a unique type of crime, but summarizes the situation of “provocation of crime”, including corruption crimes (including, giving a bribe, offering a bribe, receiving a bribe).The article pays special attention to the fact that the ECHR considers complaints of provocation of bribery in the context of the rights provided for in of the Convention for the Protection of Human Rights and Fundamental Freedoms. The Court’s position is that the existence of a proven provocation of a crime deprives a person of a fair trial from the very beginning of the proceedings. The article analyzes the signs of incitement to crime, which are an integral part of provocation of crime.The article emphasizes that the ECHR, when considering relevant cases, refers exclusively to the procedural aspect of bribery provocation, assessing the extent to which the bribery provocation affected the quality of the evidence obtained as a result. In case of considering relevant cases in the national court, the ECHR places the positive obligation to prove the absence of incitement (as a key sign of provocation of a crime) primarily on the prosecution.Based on the analysis of the case-law of the European Court of Human Rights, the authors draw attention to the fact that covert investigative and operational actions must be carried out in a passive way so as not to create any pressure on a person to commit a crime.The case-law of the ECHR also provides an opportunity to determine the limits of national courts’ examination of situations in which a defendant claims to be a victim of a “provocation of crime”. The national court must find out the following: 1) motives of decision-making on a covert action; 2) the degree of participation of the law enforcement agency in the commission of the crime; 3) the nature of any incitement or pressure experienced by the applicant; 4) reliable information about the defendant’s participation in such criminal activity.
Classifying Actions in Sentencing Based on the Classifying Criterion “Repeated”: Correlation between Criminal Procedural and Criminal Law Aspects
Authors: Basysta Iryna
Published: March 2021

Presently, different judicial divisions of the Criminal Cassation Court of the Supreme Court offer varying legal conclusions concerning the possibility to classify the actions of a person when sentencing based on the criterion of classification “repeated” varies. This conclusion follows from the analysis of the judicial Decree as of December 11, 2019 (Proceeding No. 51-4204 км 19, Сase No. 274/2956/17) of the Third judicial division of the Criminal Cassation Court, the Decree of the First judicial division of the Cassation Criminal Court as of July 10, 2018 (Proceeding No. 51-2475 км 18, Case No. 545/3663/16-к), and of the Decree as of February 27, 2019 (Proceeding No. 51-5205 км 18, Case No. 695/136/17) of the Second judicial division of the Criminal Cassation Court.Due to such a state of affairs, the already amalgamated division of the Criminal Cassation Court of the Supreme Court was making its own decision in Case No. 591/4366/18 (Proceeding No. 51-1122 кмо 20) on September 14, 2020. Yet, my opinion is that not all arguments and statements of facts provided in this decree can be agreed on without questions.In the process of the research, it was proved that the situation of the judge’s practicing their discretion powers concerning merging criminal proceedings into one proceeding (according to the requirements of Article 334 of the Criminal Procedural Code of Ukraine) is the only exceptional situation that provides for, in absence of the court’s guilty verdict in “the first criminal proceeding,” which for the legal classification of the repeated offence must take a legal effect, using the criterion of classifying the actions of the accused as “repeated” in the “next criminal proceeding.” Otherwise, we should be discussing violation of the constitutional foundation of presumption of innocence in the criminal proceeding and a securing proof of guilt.
Simulating Stochastic Diffusion Processes and Processes with “Market” Time
Authors: Boluh Kateryna , Shchestyuk Natalija
Published: March 2021

The paper focuses on modelling, simulation techniques and numerical methods concerned stochastic processes in subject such as financial mathematics and financial engineering. The main result of this work is simulation of a stochastic process with new market active time using Monte Carlo techniques.The processes with market time is a new vision of how stock price behavior can be modeled so that the nature of the process is more real. The iterative scheme for computer modelling of this process was proposed.It includes the modeling of diffusion processes with a given marginal inverse gamma distribution. Graphs of simulation of the Ornstein-Uhlenbeck random walk for different parameters, a simulation of the diffusion process with a gamma-inverse distribution and simulation of the process with market active time are presented.To simulate stochastic processes, an iterative scheme was used:

xk+1 = xk + a(xk, tk) ∆t + b(xk, tk) √ (∆t) εk,,

where εk each time a new generation with a normal random number distribution.Next, the tools of programming languages for generating random numbers (evenly distributed, normally distributed) are investigated. Simulation (simulation) of stochastic diffusion processes is carried out; calculation errors and acceleration of convergence are calculated, Euler and Milstein schemes. At the next stage, diffusion processes with a given distribution function, namely with an inverse gamma distribution, were modelled. The final stage was the modelling of stock prices with a new "market" time, the growth of which is a diffusion process with inverse gamma distribution. In the proposed iterative scheme of stock prices, we use the modelling of market time gains as diffusion processes with a given marginal gamma-inverse distribution.The errors of calculations are evaluated using the Milstein scheme. The programmed model can be used to predict future values of time series and for option pricing.
Conceptual Change Textbook Based on Local Wisdom of Palembang on Heat and Temperature
Authors: Saparini Saparini , Syuhendri Syuhendri , Murniati Murniati
Published: March 2021

The misconception is one of the learning difficulties that occur in students when learning physics, especially the concepts of heat and temperature. One solution to overcome this is by using a textbook based on conceptual change. The purpose of the research is to develop a valid and practical conceptual change textbook based on the local wisdom of Palembang. This study uses the Rowntree research method and is combined with Tessmer's evaluation at the evaluation stage. Data was collected through a walkthrough and questionnaire. The data were analyzed by looking for the mean score obtained and then converted according to the category of expert validation results and the product practicality level. The results showed that the product developed was categorized as very valid in every aspect of content, language, and design. Meanwhile, the results of the one-to-one and small group evaluation stages each showed that it is practical. This shows that the product developed is suitable to be used and by applying appropriate learning methods expected to reduce students' misconceptions of temperature and heat.
RELASI FUZZY PADA GRUP FAKTOR FUZZY
Authors: Madani Ahmad , Abdurrahman Saman , Hijriati Na'imah
Published: March 2021

Fuzzy subsets on the non-empty set is a mapping of this set to the interval . The concept of fuzzy subgroups introduced from advanced concept of fuzzy set in group theory. In concept of fuzzy set there is the concept of relations is fuzzy relations. In this study examined that fuzzy relations related to the equivalence and congruence on a fuzzy group and fuzzy factor group. The results of this study was to show that a fuzzy relation    if  and    if  is a fuzzy congruence relations on fuzzy group and a fuzzy relation  defined of is a fuzzy congruence relations on fuzzy factor group.
PEMBENTUKAN PERSAMAAN VAN DER POL DAN SOLUSI MENGGUNAKAN METODE MULTIPLE SCALE
Authors: Na'imah Farohatin , Yulida Yuni , Karim Muhammad Ahsar
Published: March 2021

Mathematical modeling is one of applied mathematics that explains everyday life in mathematical equations, one example is Van der Pol equation. The Van der Pol equation is an ordinary differential equation derived from the Resistor, Inductor, and Capacitor (RLC) circuit problem. The Van der Pol equation is a nonlinear ordinary differential equations that has a perturbation term. Perturbation is a problem in the system, denoted by ε which has a small value 0<E<1. The presence of perturbation tribe result in difficulty in solving the equation using anlytical methode. One method that can solve the Van der Pol equation is a multiple  scale method. The purpose of this study is to explain the constructions process of  Van der Pol equation, analyze dynamic equations around equilibrium, and determine the solution of Van der Pol equation uses a multiple scale method. From this study it was found that the Van der Pol equation system has one equilibrium. Through stability analysis, the Van der Pol equation system will be stable if E= 0 and  -~<E<=-2. The solution of the Van der Pol equation with the multiple scale method is Keywords: Van der Pol equation, equilibrium, stability, multiple scale.
Development of 3D E-FIST as A Teaching Material for E-Learning on Temperature and Heat Materials
Authors: Patmawati Tuti , Kholiq Abd.
Published: March 2021

This study aims to describe the validity of E-FIST (Ebook Fisika STEM), namely the STEM physics ebook as e-learning teaching materials on temperature and heat material. The stages of development in this study were limited to the validity of the media, not up to practically and effectiveness trials in learning by students, this was due to the PSBB which was carried out in the prevention of the spread of Covid-19. The ebook was developed by integrating science, technology, engineering, and mathematics. This research was developed with the DDD-E model. The stages of the DDD-E model consist of the planning stage (decide), the design stage (design), the development stage (develop), and the assessment stage (evaluate). At the initial stage, namely planning, determining the learning objectives, material, knowledge analysis, and prerequisite skills was carried out so that a draft E-FIST was produced for further evaluation. The next stage is the development stage. After an assessment was carried out at the development stage, three expert lecturers were validated for E-FIST. The aspects that are validated are viewed from the aspects of learning, material, language, and media. The analytical method used is descriptive quantitative analysis. Based on the research results it can be concluded that E-FIST obtains a percentage of validity in terms of aspects of learning, material, language, media suitability with the principles of good learning media, media work processes, and media display respectively were categorized as very good, so that the E-FIST developed was declared very valid and suitable for use in learning. This research implies that it can provide further knowledge for educators regarding the use of ebook technology as the development of teaching materials. Also, further researchers, it can be carried out to test the effectiveness and practically to produce teaching materials that are suitable for use in supporting learning.
Percepatan Penutupan Luka Sayat pada Tikus Putih Akibat Pemberian Perasan Rimpang Temulawak (Curcuma xanthorrhiza Roxb.)
Authors: Barung Elisabeth Natalia , Wungow Rifny , Kalonio Donald Emilio
Published: March 2021

Rimpang Temulawak atau Curcuma xanthorriza Roxb. adalah tanaman yang dikenal luas oleh masyarakat sebagai obat tradisional. Rimpang temulawak mengandung kurkumin dan xanthorrizzol, yang diketahui mampu mempercepat penutupan luka di kulit dan juga memiliki efek antibakteri dan antiinflamasi. Penelitian ini bertujuan untuk untuk mengetahui efektifitas perasan rimpang temulawak terhadap percepatan penutupan luka sayat pada tikus putih. Penelitian ini adalah penelitian eksperimen, dengan subyek 10 ekor tikus putih yang dibagi dalam 2 kelompok perlakuan yaitu kelompok yang diberi perasan temulawak dan kelompok kontrol negatif yang tidak diberi perlakuan. Data dikumpulkan dengan mengukur panjang luka tikus menggunakan alat ukur penggaris dan dihitung persentasi penutupan luka. Data dianalisis menggunakan analisis regresi linear dan nilai slope (b) dinyatakan sebagai kecepatan penutupan luka. Hasil penelitian ini, menunjukan bahwa rimpang temulawak mampu mempercepat penutupan luka sayat sebesar 15,262%/hari dibandingkan kelompok yang tidak diberi perlakuan sebesar 13,54%/hari. Kata Kunci: Perasan Rimpang Temulawak, Luka Sayat, Percepatan Penutupan Luka, Sediaan Sederhana, Obat Tradisional Indonesia Curcuma xanthorrhiza Roxb. is a plant that is widely known by the community as traditional medicine. The rhizome of C. xanthorrhiza contains curcumin and xanthorrhizol, which are known to be able to accelerate wound healing on the skin and also has antibacterial and anti-inflammatory effects. This study was aimed to determine the effectiveness of C. xanthorriza rhizome on the acceleration of incision wound healing on white rats. This study was an experimental study, with 10 white rat subjects divided into two treatment groups, namely the treatment group which was given by C. xanthorriza rhizome and the negative control group that was not treated. Data were collected by measuring rat wound length using a ruler and calculating the percentage of wound healing. By using linear regression analysis and the value of the slope (b) is expressed as the acceleration of wound healing. The results of the study showed that C. xanthorrhiza rhizome was able to accelerate incision wound healing by 15.262% / day compared to the untreated group of 13.54% / day.
Morphological Approach to the Study of the Dynamics of Changes in the Fibrous Structures of the Dermis in Dermotension
Authors: Kopteva Lyubov , Mishina Ekaterina , Zatolokina Maria , Mnichovich Maxim , Chernomortseva Elena
Published: March 2021

Background: The method of dermotension is successfully used in surgical practice to close extensive defects or as a result of treating fractures using the Ilizarov apparatus. However, to obtain the desired result, surgeons often neglect the condition of the skin flap itself. In this regard, the purpose of our study was to study the dynamics of changes in fibrous structures in the dermis of the skin during dermotension. Methods and Results: The material for the 14-day study was a skin flap of Wistar rats obtained after distraction with the Ilizarov apparatus. Analyzing the morphological picture of the state of the dermis after the study, we found a decrease in the thickness of both the epidermis and the dermis by 2.3 and 3.3 times, respectively. A decrease in the density of collagen structures of both types I and III was also noted. Conclusion: The results obtained indicate the restructuring, first of all, of the fibrous component of the dermis, which consists in reparative-restorative processes, which must be taken into account when choosing the rate and duration of dermotension.
Laparoscopic Repair of Perforated Gastric Ulcer by Forming a “Covered Perforation”
Authors: Khripun Alexei , Sazhin Ilya , Tsulaya Archil , Shurygin Sergey , Safonov Leonid , Vaganov Alexey , Asratyan Sarkis , Alimov Aleksandr
Published: March 2021

Performing video endoscopic operations on patients with emergency surgical pathology in order to increase the efficiency and reduce the duration of surgical intervention, as well as to prevent postoperative complications, stimulates the continuous development and implementation of new minimally invasive technologies in emergency surgery. The aim of the study was to develop a new method for laparoscopic suturing of a perforated gastric ulcer (PGU) with the formation of a “covered perforation.” The proposed method uses a fold-duplicator from the anterior wall of the stomach to close the perforation of the stomach wall, thus expanding the possibilities of using minimally invasive technologies for PGU.