bluuebunny/crossref_metadata_2025 huggingface dataset:
Juridifcation of the Concept of “Artifcial intelligence” and the Limits of the Use of Artifcial Intelligence Technology in the Judicial Process
Authors: Spitsin I. N.
Published: November 2021

The active development of artificial intelligence (AI) technology poses the question of how to integrate this phenomenon into legal reality, about the limits of using this technology in social practices regulated by law, and ultimately about developing an optimal model of legal regulation of AI. The paper focuses on the problem of developing the legal content of the concept of AI, including some methodological and ontological foundations of such work. The author brings to the scientific discussion certain constant characteristics of AI that are significant for legal regulation, which, if adopted by the legal scientific community, could be used as a scientifically sound basis for constructing specific variants of legal regulation that meet the needs of a particular sphere of social practice. The author believes that the scientifically based legal concept of AI is largely able to determine the direction and scope of applied legal research on the multidimensional problems of using AI technology in social interaction practices, including in the administration of justice, to distinguish the legal issues and problems related to this from ethical, philosophical, technological and other issues.

According to the author, the task of forming the legal concept of AI is not limited to the formulation of specific legal definitions and cannot be solved at this level. The result of the juridification of the concept of AI should be a set of unchangeable (constant) legal characteristics, while specific definitions of this term in regulations may differ depending on the needs of legal regulation practice. In the work on the formation of a legally significant concept of AI, it is proposed to abandon the descriptive essentialist approach aimed at identifying the essence of AI in favor of an ascriptive constructivist approach, which involves attributing to the content of the concept of AI those legal properties that, on the one hand, are significant for the purposes of legal regulation, and on the other hand, limit the limits of legal regulation.
Investment Partnership in the realm of Other Forms of Joint Ventures Existing in Russia in comparison with US Limited Partnership
Authors: Yakusheva E. E.
Published: November 2021

Globally the developed countries economies exist in conditions of ever-increasing competition. In recent decades, the states whose economy is based on modern technologies, the introduction of innovations and the creation of a favorable environment for their emergence has gained some advantage. Venture investment is an important component of the innovation economy, without which it is difficult to imagine the rapid development of new technologies. Under these conditions, the task of the legal systems of developed countries has become to create a legal framework for venture investment: convenient, transparent and understandable for national and international investors.

In Russia, an important stage in the creation of a legal infrastructure for investment was the adoption of the Federal Law “On Investment Partnership” in 2011, designed to provide the investment community with contractual organizational and legal forms of collective investment activity, taking into account the specifics of the implementation of venture (especially risky) business projects. The Russian investment partnership is a direct analogue of the American limited partnership (limited partnership).

The paper considers the main advantages of an investment partnership over other forms of collective investment activity, as well as analyzes some aspects of the regulation of investment partnerships in Russia and limited partnerships in the United States. The author concludes that an investment partnership is the optimal form of collective investment activity provided for by Russian legislation. There is no doubt that the general proximity of the construction of an investment partnership and a limited partnership, common in the United States (and other common law countries), makes an investment partnership the most attractive form of attracting foreign investment to the Russian market.
Zone of proximal development and scaffolding required by junior high school students in solving mathematical problems
Authors: Utomo D. P. , Santoso T.
Published: November 2021

Introduction. Mathematics comprises grading concepts. It means that one specific concept can be interrelated to another concept, which embodies a continuous process. Mathematics instruction at schools is ordinarily delivered from the easiest to the hardest concepts and requires a considerably deep understanding of each concept. By acquiring the understanding, it is quite certain that students can solve mathematical problems effectively.

Aim. The current research aimed to analyse and describe the Zone of Proximal Development (ZPD) and scaffolding required by junior high school students in mathematical problem-solving. There is also an attempt to describe the actual level of competence possessed by students, and to determine the level of scaffolding needed to develop students’ learning competencies.

Methodology and research methods. The present research employed a qualitative method within the descriptive approach. The research sample consisted of six students who attended the ninth grade at Muhammadiyah Junior High School 1 in Malang, Indonesia. The participants were grouped based on their mathematical competence levels, i.e. two high-achievers, two average-achievers, and two low-achievers. The data collection technique is done by giving tests, interviews, and observations. As for the teaching material, geometry was chosen as the main theme, covering the topic “Volumes of a Tube and a Ball”.

Results. This research revealed that ZPD of the high-achievers was effective to help them solve mathematical problems independently. Conversely, the average- and low-achievers were found to be problematic at solving mathematical problems independently. The teachers must review and restructure the scaffolding strategies, dealing intensively with students who are less competent in solving mathematical problems.

The scientific novelty of the work lies in the fact that previous studies have described efforts to improve the quality of learning through scaffolding (Siyepu S., 2013). This study describes in full the scaffolding process in the classroom: identification of students’ actual abilities and potential abilities after implementing instructional scaffolding.

Practical significance. Referring to the results of the research, it is suggested that teachers should be so heedful about their students’ ZPD and thus more appropriate scaffolding treatments can be applied. In addition, teachers are strongly recommended doing self-training in scaffolding and keeping the instruction for their students to analyse their answers repeatedly to avoid a fallacy in operations. Besides, teachers should prepare their students to be good problem-solvers by exposing them to various exercises. For further studies, it is highly expected that more relevant research should be conducted from different viewpoints, i.e. investigating the effective scaffolding strategies.
How are the characteristics of national educational systems related to social inequality?
Authors: Agranovich M. L. , Dreneva A. A.
Published: November 2021

Introduction. A great deal of research concerns the impact of education on the socio-economic performance in different countries, with highlighting the positive impact of education.

Aim. The current research is devoted to the relationship between educational indicators and social inequality representing the socio-economic development.

Methodology and research methods. By having the use of correlation analysis, the authors examined the relationship between the indicators of national educational systems, including the participation of the population in education, the structure of graduation in educational programmes, the quality of secondary education, the organisation of the educational process, the volume and structure of education funding, on the one hand, and social inequality, on the other. Social inequality was measured using the Gini index, which represents the level of income inequality in the country. The authors also investigated the educational statistics data in the OECD countries, Russia and some other countries participating in the OECD educational research.

Results. The results revealed the relationship between many educational indicators and the Gini index, as well as showed several features of these relationships in Russia. In particular, the authors observed a relationship between the social inequality index and such groups of educational indicators as the level of education (the Spearman’s rank correlation coefficient varies from -0,68 for the level of upper-secondary vocational education to 0,51 for the level of upper-secondary general education), participation of the population in education (the correlation coefficient with the integral indicator of participation in education, the average number of years of learning, was -0,64), the quality of education (a positive relationship with the proportion of students, who have not reached the second level of reading literacy in the Programme for International Student Assessment – PISA, reflected in the correlation coefficient equal to 0,56), the organisation of the educational process (positive correlation coefficient with class size equal to 0,61) and the indicators of education financing (negative correlation coefficients for primary and secondary education – -0.48, as well as for tertiary education – -0.57). It is important to note that the indicators related to master’s degree programmes show a greater negative correlation with social inequality than those reflecting the scale of bachelor’s degree programmes and short tertiary programmes.

Scientific novelty of the research includes the detailed analysis of the determinants influencing the national educational systems in their relationship with social inequality, as well as the correlation between these parameters in Russia as compared with other countries.

Practical significance of the study involves the development of the information and analytical basis for adjusting further policy in the sphere of education with taking into account socio-economic factors.
La Reforma Tributaria y el Derecho a la Protesta ciudadana frente al Covid 19
Authors: Villa Villa Sandra
Published: November 2021

En este momento, si algo ha impactado a la sociedad colombiana, fue el proyecto de ley especial presentado por el gobierno del Presidente  Iván Duque, Proyecto, a través de su Ministro de Hacienda,  Señor: Alberto Carrasquilla, el cual se tituló :“Por medio de la cual se consolida una infraestructura de equidad fiscalmente sostenible para fortalecer la política de erradicación de la pobreza, a través de la redefinición de la regla fiscal, el fortalecimiento y focalización del gasto social y la redistribución de cargas tributarias y ambientales con criterios de solidaridad y que permitan atender los efectos generados por la pandemia y se dictan otras disposiciones”. El proyecto de ley tuvo como número de radicación el 594 de 2021 ante el senado y el 439 de 2021 ante la cámara.
Relationship between electrical myocardial instability and postinfarction remodeling in patients with ST-segment elevation myocardial infarction
Authors: Oleynikov V. E. , Barmenkova Yu. A. , Dushina E. V. , Golubeva A. V.
Published: November 2021

Aim      To study the clinical value of markers for myocardial electrical instability in combination with echocardiographic parameters for predicting the risk of cardiovascular complications (CVC) in the postinfarction period.

Material and methods  This study included 118 patients with ST segment elevation myocardial infarction (STEMI) and hemodynamically significant stenosis of one coronary artery. A percutaneous coronary intervention (PCI) with stenting of the infarct-related artery was performed for all patients. On day 7-9 and at 24 and 48 weeks after the treatment, ECG Holter monitoring was performed, which included analyses of ventricular late potentials, dispersion of QT interval duration, heart rate turbulence (HRT) and variability (HRV), and heart chronotropic load (HCL). At baseline and during postinfarction week 12, all patients underwent echocardiography with calculation of indexes of end-diastolic volume (iEDV) and end-systolic volume (iESV) to verify the signs of left ventricular (LV) myocardial remodeling. The criteria for LV pathological remodeling included increases in iEDV >20 % and/or iESV >15 % at 12 weeks after STEMI. The group without remodeling, R(-), consisted of 79 (67 %) patients and the group with signs of LV pathological remodeling, R(+), consisted of 39 (33 %) patients. Quality of life and achieved endpoints were evaluated during 144 weeks.

Results By week 48 in group R(-), the stabilization of electrical processes in the myocardium was more pronounced as indicated by a decrease in HFLA by 12 % (р=0.004) and by a fourfold increase in RMS (р=0.047). Only in this group, the baroreflex sensitivity restored; pathological ТРС decreased from 20 to 5% (p=0.002) by the end of the active treatment. Stabilization of the repolarization phase duration in various parts of the myocardium was more active in patients without pathological remodeling as shown by decreases in disp QTa (р=0.009), disp QTe (р=0.03), sd QTa (р=0.006), and sd QTe (р=0.009). This was not observed in the group R(+). The recovery of vagosympathetic balance due to leveling the sympathetic component also was more effective in the group R(-), which was reflected in increased spectral and temporal HRV indexes (р<0.05). Both groups showed reduced HCL values at 24 weeks (р=0.047 and р=0.006); however, the HCL regression remained also at 48 weeks only in the group R(-) (р=0.006). Group R(-) patients reported higher quality of life (р=0.03) than group R(+) patients. Endpoints were achieved more frequently in the group R(+): 87.1 % vs. 27.8 % (odds ratio, 11.8; 95 % confidence interval, 4.6–30.8; р=0.00001).

Conclusion      Pathological myocardial remodeling in early postinfarction period is associated with electrophysiological instability of the myocardium, which results in the development of CVC and low quality of life in patients with STEMI.
Analysis of the impact on the health care budget and consumers of the use of the preparation of omega-3 acid ethyl esters90 in the treatment of patients with atherogenic dyslipidemia
Authors: Frolov M. Yu. , Salasyuk A. S. , Rogov V. A.
Published: November 2021

Aim      To evaluate economic results of using omega-3 acid ethyl esters 90 for primary prevention of cardiovascular catastrophes in patients with residual hypertriglyceridemia (HTG).

Material and methods  The economic evaluation of using the medicine omega-3 acid ethyl esters 90 in the system of drug provision of the population of the Russian Federation was performed by analyzing the effect on the budget using a pharmacoeconomic model developed with the Microsoft Office Excel 2016 software. The effect of omega-3 acid ethyl esters 90 was evaluated in 555 643 patients with residual HGT (Moscow). The study lasted for one year. Results of the meta-analysis by A.A. Bernasconi et al. (2020) were used as a source of efficacy data. The following direct and indirect medical expenses for treatment of cardiovascular complications of residual HTG were taken into account in this study: expenses for drug therapy; expenses for therapy and rehabilitation for nonfatal complications; expenses for fatal outcomes; state support for disability; foregone per capita gross domestic product resulting from losses of earnings due to temporary incapacity to labor by people of work-able age; and salary payments for temporary incapacity to work.

ResultsUsing omega-3 acid ethyl esters 90 in 555 643 patients with residual HTG will allow preventing 1 437 fatal ischemic cardiovascular complications (including 564 deaths from ischemic heart disease and 1 128 cases of myocardial infarction (MI), including 558 fatal cases of MI). Furthermore, the difference in expenses compared to the high-dose statin treatment alone will be 359 252 253 rubles or 0.32 %.

Conclusion      The results of this comprehensive pharmacoeconomical study showed that the use of omega-3 acid ethyl esters 90 in patients with residual HGT is an economically preferrable strategy compared to high-dose statin treatment alone and does not influence significantly the budgetary expenses as a part of the State Guarantee of Free Medical Care to the Citizens of the Russian Federation (increase in expenses by 0.32 % compared to the current practice). At the same time, the use of omega-3 acid ethyl esters 90 results in a 10% decrease in the number of fatal ischemic cardiovascular complications.
Expert opinion. Spironolactone: a new twist on an old story
Authors: Orlova Ya. A. , Begrambekova Yu. L. , Plisuk A. G.
Published: November 2021

The article presents recent data on possibilities of a broader use of mineralocorticoid receptor antagonists for existing indications and of expanding indications for the use of this pharmaceutical group in the context of the novel coronavirus infection COVID-19. The authors discussed prospects for expanded detection of aldosteronism using a new diagnostic approach, including an additional evaluation of blood pressure response to spironolactone.
Acute coronary syndrome in patients with cancer: features of the course and the possibility of predicting hospital and long-term (6 months) periods using GDF-15, NT-proBNP, hs-CRP biomarkers
Authors: Shalenkova M. A. , Ivanov A. V. , Klimkin P. F.
Published: November 2021

Aim    To evaluate clinical features of the course of acute coronary syndrome (ACS) in patients with oncological diseases (OD) and to determine the role of biomarkers GDF-15, NT-proBNP, and hs-CRP in short-term and long-term prognoses.Material and methods    In 88 patients (34 patients with ACS and OD and 54 patients with ACS without OD), complaints and historical, objective, and laboratory and instrumental data were evaluated and blood concentrations of GDF-15, NT-proBNP, and hs-CRP biomarkers were measured on the first day of hospitalization. Incidence of cardiovascular complications (CVC) and outcomes of hospital and long-term (6 months) periods were analyzed. Statistical analysis of results was performed with the Statistica 12.0, MedCalc 19.1.7 software. The level of statistical significance was р<0.05.Results    In the ACS+OD group as compared to the ACS without OD group, the onset of disease was mostly atypical, with shortness of breath and/or general weakness; the ACS+OD patients more frequently had III-IV Killip class acute heart failure (29 and 7 %, р=0.01); mean hemoglobin concentration (125.6±27.9 and 141±16.6 g/l, р=0.003), prothrombin index (76.4±15.2 and 84.9±17.6 %, р=0.003), and left ventricular ejection fraction (47.7±6.1 and 50.7±7.2 %, р=0.02) were lower; and median concentrations of GDF-15 (1.95 [1.3; 2.8] and 1.45 [1.2; 2.0] ng/ml, р=0.03), NT-proBNP (947.3 [517.8; 1598.2], and 491.1 [85.1; 1069.1] pg/ml, р=0.006), and hs-CRP (14.1 [8.15; 36.75] and 7.8 [4.4; 16.2] mg/l, р=0.01) were higher. The presence of OD was associated with development of CVC, including urgent endpoints in the long-term and also increased the probability of fatal outcome within 6 months after discharge from the hospital. To predict the risk of CVC in patients with ACS and OD, two models with high prognostic values (AUC>0.9) were proposed. In the long-term, the value of NT-proBNP (cut-off point >524.5 pg/ml) was a statistically significant predictor for development of endpoints with a high predictive value (AUC>0.8).Conclusion    The features of the clinical course of ACS in patients with OD indicate the importance of isolating such patients into a separate group. Additional use of the developed models, along with a standard risk assessment by the GRACE scale, will allow individualized management of patients with ACS and OD during the hospital and long-term (6 months) periods.
Various applications of platelet rich fibrin in dentistry: A literature review
Authors: Wahengbam Prashanti , Ravi Nenavata , Bharathesh S , Budhiraja Dimple , Nandal Neha , Fatima Dania
Published: November 2021

Platelet rich fibrin is a part of platelet concentrate, that is derived from human blood and made through the process of centrifugation. It is an autogeneous bio material, which basically constitutes various growth factors, and cytokines that are entrapped in its matrix of fibrin. Platelet rich fibrin provides ideal environment for healing of the wound and the regeneration of the tissue. Platelet rich fibrin helps in regulating the inflammation process and increases the healing process.
Gingival depigmentation with scalpel and diode laser
Authors: Khatri Ayush , Archi  , Priyanka  , Khatri Manish , Bansal Mansi , Rehan Md.
Published: November 2021

Melanin, a nonhemoglobin-derived brown pigment, is the most common of the endogenous pigments and is produced by melanocytes present in the basal layer of the epithelium. Gingival hyperpigmentation is caused by excessive deposition of melanin located in the basal and suprabasal cell layers of the epithelium. Pigmentation of gingiva not just has an impact on esthetics but also creates psychological negativity. Though a wide range of techniques are available to manage this condition. Depigmentation procedures such as scalpel surgery, gingivectomy with free gingival autografting, electrosurgery, cryosurgery, chemical agents such as 90% phenol and 95% alcohol, abrasion with diamond bur, Nd: YAG laser, semiconductor diode laser, and CO laser have been employed for removal of melanin hyper pigmentation. The following case report describes two different surgical depigmentation techniques scalpel technique and lasers. Better results of depigmentation were achieved with diode laser than conventional scalpel with respect to esthetics and less postoperative discomfort.
Treatment of localized gingival recession with chorion membrane- A case report
Authors: Nair Sandhya T , Janam Prashantha , Manikandan GR
Published: November 2021

Aim of root coverage procedure is to restore the tissue margin to the Cemento-enamel junction. Many surgical techniques have been developed throughout the years and Guided tissue regeneration (GTR) based rootcoverage using different allograft membranes has been utilized to treat gingival recession with excellent results.This case report describes a case of gingival recession managed by chorion membrane with coronally advanced flap.
Management of endo perio lesion with class iii furcation defect –A case report
Authors: Inasu Shiny , Thomas Biju
Published: November 2021

The primary aim of periodontal and endodontic therapy is to restore the lost periodontium and maintain the natural dentition. An ideal endodontic treatment involves removal of any infected pulp completely, preventing or minimizing any chances of reinfection, with proper irrigation and drying of canals, care to be taken not to break any file during cleaning and shaping of canals, proper obturation and not over or under filling of canals, proper sealing, proper restoration and an ideal crown placement. An ideal periodontal treatment involves scaling and root planing, proper reflection of flap to visualize the furcation areas, removal of diseased soft tissue surrounding the lesion and furcation areas and giving adequate oral hygiene instructions. Based on grade of furcation defects, suitable treatment modalities should be chosen. This case report aims at managing an endo-perio lesion involving class III furcation defect using tunneling technique.
Periodismo digital y emprendimiento en pandemia
Authors: Antunish Cárdenas Arutam
Published: November 2021

Este artículo estudia el nacimiento de medios digitales y sus características durante la pandemia en Ecuador. Utiliza una metodología de perspectiva histórica mediante el uso de bases de datos primarias. Comparó los catastros del Registro Público de Medios del año 2019 y 2020. Concluye que entre marzo y diciembre del año 2020 nacieron 27 medios digitales en el país; la mayoría de ellos, ubicados en la Sierra, cubren temas generalistas y son de origen privado.
Calidad en contenidos deportivos
Authors: Núñez Sánchez Felipe
Published: November 2021

Este artículo registra los resultados de un análisis a la calidad periodística de los contenidos informativos de medios deportivos digitales en Ecuador. Con base en el modelo del Valor Agregado Periodístico y conceptos sobre el periodismo de investigación, se realizó una matriz que contiene datos sobre los artículos publicados durante cuatro semanas en las páginas web de tres medios de comunicación nacionales. A partir de gráficos estadísticos y comparando con los conceptos de autores sobre periodismo deportivo y de investigación, se concluyó que los contenidos deportivos de estos medios, en su mayoría, presentan poca investigación propia, tienen escasa contrastación y se enfocan en la primicia.
¿Cómo comunicar el cambio climático sin crear escepticismo?
Authors: Muñoz-Pico Hilda Paola
Published: November 2021

Este artículo detalla los factores que deben considerarse en la comunicación del cambio climático para generar compromiso ciudadano. Entre otros aspectos, aborda la importancia de cambiar rutinas periodísticas como la del contraste, por la que se incluye a escépticos y negacionistas en las notas informativas. Los buenos contenidos destacan por su capacidad para simplificar, sin ser reduccionistas; además, se centran en la ciencia y su método y no caen en el cientificismo.
Docencia y comunicación en pandemia desde la carrera de comunicación de la Universidad Estatal de Bolívar
Authors: ALBAN GALLO MANUEL EDUARDO
Published: November 2021

Esta investigación tuvo como objetivo analizar la actividad docente y su influencia en el nivel de comunicación en tiempos de pandemia en los estudiantes de la carrera de comunicación de la Universidad Estatal de Bolívar, desde tres ejes interdependientes: 1) Perfil psicográfico; 2) Relación clases virtuales docente-estudiante; 3) Factores psicosociales. Evidenció que los estudiantes que viven con más de tres personas han disminuido su nivel de concentración; la mayoría utiliza computadora y celular como medios de conectividad con internet fijo, complementando su educación a través de redes sociales. Se propone el uso de estrategias de educomunicación y un seguimiento psicológico a cada actor educativo. Como conclusión, la educación en tiempos de crisis sanitaria implica que no solo se deben crear condiciones tecnológicas apropiadas, sino el seguimiento psicológico por los entes pertinentes, para buscar la garantía de generar una cultura de resiliencia.
Poética de la realidad
Authors: Serrano Alexis
Published: November 2021

Este ensayo muestra los vínculos cercanos entre la crónica periodística y la literatura. Aunque también expone la gran distancia entre la realidad y la ficción y por qué los periodistas no pueden inventar sus historias pero sí convertir los hechos en poesía, en prosa narrativa. El análisis se basa en vivencias, talleres y lecturas de dos grandes cronistas argentinos y referentes latinoamericanos: Leila Guerriero y Martín Caparrós. En sus libros Zona de obras (Guerriero) y Lacrónica (Caparrós) exponen a la crónica como el momento del otro y sus características desde el reporteo profundo, la observación detallada y la escritura de mucha edición. Es una reivindicación de este género periodístico de largo aliento y la defensa del escrito por sobre la imagen y el consumo comprimido a través de las redes sociales.
Cómo nació Los juegos del poder. Espionaje y control de la información
Authors: Levoyer Saudia
Published: November 2021

En el periodismo, los trabajos de largo aliento requieren de cooperación, como han sido los últimos casos de importancia internacional. También es indispensable tener buenos archivos y contactos a los cuales, en algunos casos, garantizarles el anonimato; es fundamental para que se sientan tranquilos al hablar. En el libro Los juegos del poder: Espionaje y control de la información se hace un análisis del cambio al sistema de inteligencia, desde una perspectiva geopolítica, a fin de entender el porqué Ecuador es visto con interés por potencias internacionales. Se hace un repaso a algunos giros clave y cómo se politizó el sistema, por intereses de un gobierno y de una ideología regional.
Hybrid Diagnosis Method Applied to Switched Mechatronic Systems
Authors: Abboudi Ayman , Belmajdoub Fouad
Published: November 2021

This article proposes a new diagnosis approach extended to switched mechatronic systems. The best tools of modeling and supervision, notably bond graph and observer, are used to move towards a high reliable fault detection and isolation approach. Researchers have always divided the hybrid observer into two blocks: a location observer that identifies the current mode and a continuous observer that detects faults. Applying the same logic to a system with a higher number of parameters from different energy domains increases the number of calculations and leads to a combinatorial explosion. The innovative interest of the present paper is the optimization of the observer's number using only one block to detect and, at the same time, locate faults. As a second objective, this paper presents an extension of the method to include complex industrial devices, which are in most cases switched mechatronic systems.
PID Tuning Method Using Chaotic Safe Experimentation Dynamics Algorithm for Elastic Joint Manipulator
Authors: Hanif Mohd Ikhmil Fadzrizan Mohd , Ahmad Mohd Ashraf , Jui Julakha Jahan
Published: November 2021

This paper proposed the chaotic safe experimentation dynamics algorithm (CSEDA) to regulate angular tracking and vibration of the self-tuning PID controller for elastic joint manipulators. CSEDA was a modified version of the safe experimentation dynamics algorithm (SEDA) that used a chaos function in the updated equation. The chaos function increased the exploration capability, thus improving the convergence accuracy. In this study, two self-tuning PID controllers were used to regulate the rotating angle tracking and vibration for elastic joint manipulators in this control challenge. The suggested self-tuning PID controller's performance was evaluated in angular motion trajectory tracking, vibration suppression, and the pre-determined control fitness function. A self-tuned PID controller based on CSEDA could achieve superior control accuracy than a traditional SEDA and its variants.
Analysis and Defect Improvement Using FTA, FMEA, and MLR Through DMAIC Phase: Case Study in Mixing Process Tire Manufacturing Industry
Authors: Febriana Tubagus Hendri , Hasbullah Hasbullah
Published: November 2021

In line with the increasingly fierce industry competition, all companies strive to make continuous improvements to increase added value and reduce waste which will impact the company's ability to maintain its existence in the future. One of the problems found in the tire manufacturing industry is the quality problem of the occurrence of defects in the mixing process which is dominated by the viscosity out standard on the compound steel breaker. In this study, analysis and improvement of the defect problem were carried out using Fault Tree Analysis (FTA), Failure Mode and Effect Analysis (FMEA), and Multiple Linear Regression (MLR) to test the correlation between the root causes found to the main problem. Based on the results of the analysis found thirteen root causes where the factor of variation in material viscosity and the suitability of determining the design process has the largest Risk Priority Number (RPN) value and has a strong correlation to defects that occur based on hypothesis testing. Furthermore, improvements are made using the DMAIC method on all factors that affect the occurrence of defects. As the result, the improvement can be effective in reducing the defect to 34.5% and achieve the expected target.
RNA Identification Technique and RST Control of a Hybrid Indirect Matrix Converter with a Flying Capacitor Three Level Inverter in Power Active Filtering Application
Authors: Eddine Ameur Taki , Ameur Aissa , Atallah Benalia
Published: November 2021

The present paper deals with RST controller using implementation of neural architectures to control power electronics systems dedicated to power quality improvement in a distribution grid. We present a technique for designing a robust RST controller, The computation of the controller is used to enhance the control a Hybrid Indirect Matrix Converter with a flying capacitor three level inverter (HIMC) coupled to the power grid (PG) by an RL filter, the synthesizing of this RST controller is formulated through open and close loop. Artificial neuronal network (ANN) identification technique is used to define/extract this disturbance. Simulation results by MATLAB, Simscap/sim power system code shows the effectiveness of the proposed method.
New Optimized Control of Cascaded Multilevel Converters for Grid Tied Photovoltaic Power Generation
Authors: Benamrane Karima , Abdelkrim Thameur , Benlahbib Benlahbib , Bouarroudj Noureddine , Borni Abdelhalim , Lakhdari Abdelkader , Bahri Ahmed
Published: November 2021

This paper proposes a new optimized control of photovoltaic two stages conversion cascade composed by Three Levels Boost (TLB) and Three Levels Neutral Point Clamped (TLNPC) inverter. In order to extract the maximum power from photovoltaic generator and get a balanced DC bus voltage, the duty cycles of the two TLB switches are determinate from a Fuzzy Logic Controller (FLC) for the first switch and by adding to the first duty cycle an additional duty cycle obtained by integration of the error between the two capacitors voltages of DC bus. Balancing the bus voltages by the TLB using a single regulator avoid us to use a complex balancing algorithm by the redundant vectors of TLNPC inverter. For the control of the inverter, we used a Proportional Integral (PI) regulator optimized by PSO. This command allows us to have on one side a constant DC bus voltage and a current injection in phase with the grid voltage. To have an efficient follow-up of the TLNPC inverter reference voltages, the Space Vector Pulse Width Modulation (SVPWM) is applied. The simulation is carried out in MATLAB/SIMULINK platform. The results obtained from the application of the FLC command associated with PI PSO are better compared to the simulation without optimization in terms of sum of the absolute values of the errors at the inputs of the three PI regulators.
Performance Investigation of Small Wind Turbine Installed over a Pick up Vehicle to Charge an Electric Vehicle Battery
Authors: Anagie Gashaw A. , Hassen Abdulkadir A. , Sintie Yihun T.
Published: November 2021

Wind energy is a vital energy free from pollution and freely available energy in our world. The purpose of this research is performance investigation of small horizontal axis wind turbine installed at the top of a pickup vehicle and the power generated from this wind turbine is used to charge the batteries of the vehicle. Permanent magnet generator is selected for the experiment as well as the selected type of the blade is NACA 4412 and its angle of attack is 6°. The angle of attack is determined by using Qblade software at the maximum lift to drag ratio of NACA 4412 airfoil. The blades of wind turbine are fabricated from wood because wood have excellent fatigue properties. The comparison between analytical analysis and experimental test is done based on the reaction wind speed, in order to achieve good matching between analytical analysis and experimental test. Finally, the power output from the wind turbine is used for charging the vehicle battery and the charging process is controlled by regulator. The maximum powers determined from the experimental and theoretical analysis are 334 W and 437 W at reaction wind speed of 28.6m⁄s respectively at the maximum vehicle speed of 25m⁄s.
Rola kompleksu MutS oraz białka MSH2 w kontroli crossing-over u roślin
Authors: Dluzewska Julia , Ziółkowski Piotr
Published: November 2021

Zjawisko crossing-over (CO) polega na wzajemnej wymianie fragmentów chromatyd pomiędzy chromosomami homologicznymi i zachodzi podczas pierwszego podziału mejotycznego. Na ostateczną lokalizację i częstość crossing-over na chromosomie wpływa wiele czynników, m.in. aktywność modyfikatorów działających in trans, stopień metylacji chromatyny czy obecność polimorfizmów pomiędzy rekombinującymi chromosomami. System MMR, a przede wszystkim białko MSH2, służą do rozpoznawania i naprawy nieprawidłowo sparowanych zasad DNA, a w mejozie zapobiegają rekombinacji pomiędzy niedopasowanymi regionami chromosomowymi. Okazuje się, iż u roślin białko MSH2 może pełnić także rolę pro-rekombinacyjną, rozpoznając polimorfizmy i nakierowując zdarzenia crossing-over w regiony silniej polimorficzne. W niniejszej pracy pokazujemy, jak obecność polimorfizmów może wpływać na chromosomową dystrybucję CO, a w konsekwencji – na ewolucję genomów roślinnych. Jest to szczególnie istotne w przypadku roślin samopylnych, u których naturalnie występuje duży stopień homozygotyczności. Gdyby rekombinacja zachodziła wyłącznie w regionach homozygotycznych, nie dochodziłoby do powstawania nowych genotypów w kolejnych pokoleniach, a ewolucja organizmów byłaby spowolniona.
Agronomic performance of maize hybrids for forage production in the 2019/2020 harvest
Authors: Garcia Dionatas Alex , Pereira José Luiz de Andrade Rezende , Garcia Tássio Rezende , Souza Vítor Marinello , Pereira Júnior Luciano Luiz
Published: November 2021

Maize has great economic prominence in national and international agribusiness, being used for various purposes such as grain use and in the form of bulky (silage). This study aimed to evaluate the agronomic characteristics of twelve maize hybrids for silage production in Inconfidentes-MG. Twelve hybrids were used: 20A78PW, 2B512PW, 2B533PW, 2B688PW, 30F53LEPTERA, AG8740-PRO3, DKB345-PRO3, DKB363-PRO3, LG3055-PRO3, LG6036-PRO3, MAXIMUS-VIP3, and MG652PW. The treatments were implanted in a randomized block design (CBD) containing three repetitions. The experimental plots consisted of four lines of five meters in length and 0.8 m spacing between rows, with the two central lines as useful areas. The parameters evaluated were green matter productivity, dry matter productivity, plant height, ear height, average stalk thickness, cutting window, flowering, and cycle. The hybrids 20A78PW; 2B533PW; DKB345-PRO3, and DKB363-PRO3 presented the highest cut-off window values in relation to the others. LG3055-PRO3 hybrid presented the smallest cut-off window. The hybrids 30F53LEPTERA, AG8740, DKB345-PRO3, LG6036-PRO3, and MG652PW presented the highest plant height values. No statistical difference was observed between the hybrids for the variables: green matter productivity, ear height, and stalk thickness. Hybrids AG8740, DKB345-PRO3, LG6036-PRO3, and MG652PW obtained the highest dry matter productivity values. Hybrids 20A78PW, 2B533PW, DKB345-PRO3, and DKB363-PRO3 presented the lowest male and female flowering time. Hybrid DKB345-PRO3 stood out, showing great potential to be recommended and cultivated by silage producers.
Socio-environmental analysis of the rural zone of Espírito Santo do Dourado/MG: a perspective for future integration policies
Authors: Andrade Marielle Rezende de , Ávila Fábio Geraldo , Junior Roosevelt Heldt Junior Heldt , Santos Mireile Reis dos
Published: November 2021

Issues referring to environmental conservation and diagnosis of rural zones are still scarce topics inside public policies and this aspect still requires greater attention. That being, the goal of this research was to present a diagnosis of the rural area of a small city in the South of the Minas Gerais State, with typical agricultural characteristics and large availability of water in order to verify possible socio-environmental inconsistencies. The data was gathered from secondary information of the federal, state, and town public databases, besides face-to-face questionnaires, rapid assessment protocols and high-definition satellite mapping of land use for the last few years. It was possible to assess that conservation actions and Permanent Preservation Areas (APPs) are reduced and that interviewed people present limited knowledge about public policies of family farming stimulation. As per rural basic sanitation, practical action by local governments must be prioritized. The conclusion of this diagnosis is to suggest that further investments should be prioritized to assist social and environmental segments.
Роль этнокультурных ценностей в жизни современных студентов
Authors: Егошина Н.Г.
Published: November 2021

В статье рассматриваются этнокультурные ценности как явления традиционно-бытовой культуры, служащие для сплочения этноса и представленные либо в виде предметных ценностей, либо как ценности национального сознания. В статье приводятся этапы исследования по выявлению уровня этнической самоидентичности студентов и степени их приобщенности к этнокультурному наследию своего народа. Автором приведены данные диагностики студентов, которые выявляют отношение молодежи к основным компонентам этнокультуры, а также степень реализации этнокультурных традиций в повседневной жизни.
Mathematical methods and their application in the sectors of the national economy (case study of agribusiness)
Authors: Kandalova M.A
Published: November 2021

Agribusiness is one of the most important areas in the economic structure of the Russian Federation, and its research is significant because of the country’s dependence on food supplies. At the same time, manufacturing is characterized by a rather complex technological cycle and has many economic entities involved in the sale of products. Under these conditions, the construction of an optimal management system of an agricultural enterprise cannot be carried out without formed practical analysis models that help to identify the patterns of their operation. At the same time, it is the agrarian sector that seems to be the standard for the application of mathematical methods, making it possible to account for the laws and trends that have formed during forecasting the development of this and other sectors. The mathematical analysis of statistical data in the agricultural sector is based on various models and methods, among which the preference is given to economic and mathematical or simulation modeling. Using traditional mathematical models during static observation, trends and forecasts of the development of the sector have been built, the study of which is the objective of this paper.
Влияние скорости перехода на энергоэффективность морского судна
Authors: Москаленко В.М.
Published: November 2021

Проблема изменения климата накладывает существенные ограничения на развитие морского судоходства. Прежде всего, это касается обязательного планирования и расчета операционного коэффициента энергоэффективности в рейсе, с целью уменьшения выбросов CO2. С введением запрета на высокосернистое судовое топливо, с января 2020г. ситуация еще больше усугубилась, что требует от судовладельцев отказа от части прибыли в пользу удовлетворения ограничениям по энергоэффективности судна. В данной работе исследуется влияние транспортной работы судна, с точки зрения изменения скорости на переходе, на операционный коэффициент энергетической эффективности морского судна.
Деятельность белых правительств в налоговой сфере на севере и северо-западе России в годы Гражданской войны
Authors: Медведев В.Г.
Published: November 2021

В статье исследуется малоизученная в отечественной историко-правовой науке проблема деятельности антисоветских правительств Севера и Северо-Запада России в налоговой сфере в годы гражданской войны. Выявлено, что налоговое законодательство и административная практика государственных органов основывалось на дореволюционном законодательстве и в русле налоговой политики Российского правительства адмирала А.В. Колчака. Определено, что поступления в бюджет от прямых налогов составляли ничтожные суммы. Косвенные налоги ввиду чрезвычайно слабого развития промышленности и торговли и отсутствия необходимых товаров и услуг практически не собирались. Установлено, что северо-западном государственном образовании по причине кратковременности его существования и незначительной территории, а также неразвитости предпринимательства налоги заменялись реквизициями, проводившимися воинскими начальниками для обеспечения своих войск. Выявлено, что на севере и северо-западе «белой» России наполнение бюджета осуществлялось в основном за счет неконтролируемой эмиссии денежных знаков, что раскручивало инфляцию и становилось одним из способов всеобщего принудительного налогообложения.
THE LABORATORY STUDY OF RESIN-BONDED FIXED PARTIAL DENTURES IN THE POSTERIOR REGION (IN PREMOLAR-SIZED SPANS). PART 1
Authors: Petrikas Oleg , Tsigankov Kobstantin , Petrikas Inga
Published: November 2021

Background. Developed at the end of the 20th century, resin-bonded fixed partial dentures are now a real alternative to traditional bridges and intraosseous implants. The mean survival rate of conventional fixed partial dentures clearly exceeds the mean survival rate of adhesive fixed partial dentures. Debonding of fixed/fixed resin-bonded fixed partial dentures is associated with the difference in the natural mobility of the abutment teeth. Therefore, the fixed/movable resin-bonded fixed partial dentures are preferable.

Objectives — to study the stress distribution in fixed/movable resin-bonded fixed partial dentures RBFPD using finite element analysis.

Methods. The finite element method was used to preliminary estimate the stress distribution pattern in fixed/movable resin-bonded fixed partial dentures (metal or fiberglass-composite). The calculation was carried out using special programs (Ansys 12.2 Inc. Ansys — USA and AWP 3 D Studio — Russia).

Results. The medial area of stresses is located only in the contact zone of the occlusal rest in the quantitative range of 32-60 N/mm2. The distal area of stresses corresponds to the distal connector, being approximately in the same range — 40-65 N/mm2. In the case of a metal retainer, the stresses also apply to it — 4-37 N/mm2. In the case of a fiber-composite retainer, stresses are practically not applied to it — 1-14 N/mm2.

Conclusions. Analysis of the stress distribution pattern for the fixed/movable resin-bonded fixed partial dentures, obtained by the finite element method, confirmed: 1) the expediency of shortening the minor retainer 2) the choice of a rigid metal (possibly ceramic) major retainer instead of a weakly rigid fiber-composite major retainer.