bluuebunny/crossref_metadata_2025 huggingface dataset:
Formation of structure and content of the discipline “Obstetrics” to prepare students majoring in “Nursing”, area of specialization “Medical care”, educational degree of junior specialist at higher medical educational institutions
Authors: Kusa O.
Published: June 2021

The objective of the article - to acquaint teachers of medical educational institutions, including higher, at which professional medical colleges are created with a course of academic discipline “Obstetrics” to prepare students majoring in “Nursing”, area of specialization “Medical Care”, the educational degree of a junior specialist.Material and methods. This article describes the academic discipline “Obstetrics” which is an important subject for the professional development of future physicians.Results. The content of the discipline “Obstetrics” to prepare students majoring in “Nursing”, area of specialization “Medical Care”, the educational degree of a junior specialist, includes the program which describes the content of educational material, requirements for the organization of its mastering and educational and methodical complex are formulated.Conclusion. Developed program and teaching methods contribute to the formation of professional competence for future specialists. Learned in the process of studying the discipline of knowledge and skills determine the readiness of the paramedic for professional activities, allow to apply their set effectively and competently apply medical interventions in various obstetric conditions.
Dynamics of the abdominal organs malignant tumors regional morbidity, taking into account certain factors
Authors: Ivashchuk O. , Malyshevsky I. , Myshkovsky Yu.
Published: June 2021

The aim of the work is to determine the dynamics of the incidence of malignant neoplasms of the abdominal cavity in the Bukovina region and possible determinants. Material and methods. The study was performed on the basis of RMNE "Chernivtsi Regional Clinical Oncology Center" and Clinic of Oncology of Bukovinian State Medical University and covers observation materials during 2015-2019 and statistical reporting on 102,247 cases of tumors of various localizations. The indicators were calculated using Access and Excel software packages based on the Microsoft Office environment. The results. The total number of malignant neoplasms of different localizations is relatively stable throughout the study period and ranged from 19903 to 21259 cases per year (average 20449.4±508.2 registered during the year). Neoplasms of the abdominal cavity are about the third of the total number of tumors of different localization with a certain tendency to grow. The distribution of patients with neoplasms of the abdominal cavity by stages of development is relatively uniform, despite significant variations in different localizations of tumors. Conclusions. A significant part of tumors of the abdominal cavity is diagnosed in the late (III-IV) stages of the pathological process, which leads to a decrease in the effectiveness of treatment. Significant differences in the clinical and epidemiological characteristics of neoplasms of various abdominal organs have been identified, which requires further study.
Pedagogical component in training operational services employees
Authors: Kolotushkin Sergey M. , Kunts Elena V. , Shkabin Gennadiy S. , Pyankov Matvey N.
Published: June 2021

The object of pedagogical knowledge are those phenomena of reality that determine the development of an individual in purposeful social activity. Pedagogy tends to penetrate all vocations that impact individuals in the context of their education and education. The author of this article established the role of pedagogy in operational activity, drawing an important conclusion that the influence of the activities of employees of the operational services on Russian citizens is often associated with the council and education of the latter. The author explains the provisions of the current legislation that denote the pedagogical orientation of operational activities, emphasizing its importance not only in the process of training ordinary employees, but in the management of operational services. Pedagogy mobilizes and disciplines the work of an operational unit and the implementation of educational functions.
The technology of using telegram messenger as an e-learning tool
Authors: Prokopyev Michail Semenovich , Kostikova Natalia Anatolyevna , Kuzin Zotik Semyonovich , Ilina Tatyana Sergeevna , Tyagulskaya Liudmila Anatolievna
Published: June 2021

This article objective is providing methodological guidelines on Telegram messenger using by educational process participants in the context of e-learning. The problem analysis is focused on examination of opportunities for messenger tools and technologies in interacting with users. The procedures of messenger using by teachers as part of e-learning are systematized. The trend for messenger using expansion as a tool for fast communication and monitoring task execution in e-learning is described. Methodological guidelines for teachers on using Telegram messenger for improving the educational organization efficiency in e-learning have been developed. The theoretical significance of the results lies in summarizing Russian and foreign experience in messenger гising for e-learning purposes. The necessity of using messengers in educational activity arrangement is justified. The effectiveness of their use is well-grounded.
Formation of digital educational ecosystem for teacher education
Authors: Tretyakova Tatiana Vasilievna , Vlasova Elena Zotikovna , Buryanina Nadezhda Sergeevna , Egorovna Alekseeva Tuyara , Markova Larisa Leonidovna
Published: June 2021

This paper presents an example of the formation of a digital educational ecosystem, developed at the Teacher Training Institute of North-Eastern Federal University (NEFU), as an integral socially significant multi-level system, whose participants are students and employees of the educational system of the republic. In general, the digital educational ecosystem is a socio-technical ecosystem, which includes a set of interacting independent educational and social actors, representing students, educational institutions, and a variety of potential customers of educational services. The important thing for the functioning of the digital educational ecosystem is the availability of resources: material and technical, human resources represented by teachers with formed digital competencies, software (digital educational resource), and used modern technologies (blended learning, distance learning technologies, and so on). It is expected that practical activities within the project should create collective digital competencies, will accumulate new intellectual capital, and will develop new mechanisms of collaboration in the interaction of new participants from the perspective of territorial, geographical, national, and other aspects.
Оцiнка швидкостi збiжностi в центральнiй граничнiй теоремi для послiдовностi серiй
Authors: Боярищева Т. В. , Капустей М. М. , Сливка-Тилищак Г. І. , Слюсарчук П. В.
Published: June 2021

Граничнi теореми теорiї ймовiрностей мають широке застосування у рiзних галу-зях науки i виробництва. Адже вони вивчають властивостi рiзних випадкових вели-чин, що формуються пiд впливом значної кiлькостi випадкових чинникiв, кожен зяких, в свою чергу, має незначний вплив на кiнцевий результат, але сумарний впливцих чинникiв є суттєвим. Задачi, якi розв’язуються в межах цiєї галузi, можна умов-но роздiлити на два типи. Першi дослiджують сам факт збiжностi суми випадковихдоданкiв, а другi вивчають швидкiсть цiєї збiжностi. Дана робота присвячена якраздругому питанню. Оцiнками швидкостi збiжностi у граничних теоремах займалосячимало дослiдникiв. Щоправда, до середини минулого столiття цi оцiнки формулюва-лися в термiнах абсолютних моментiв, що мало принаймнi два недолiки. Насамперед,iснування абсолютних моментiв є досить жорсткою умовою, що суттєво звужує коловипадкових величин, до яких можна застосувати данi оцiнки. I по-друге, оцiнки, щовиражаються через абсолютнi моменти, не враховують близькостi розподiлiв доданкiвдо граничного. Незважаючи на це, iснує велика кiлькiсть оцiнок, починаючи з нерiвно-стi Беррi – Ессеена i закiнчуючи дослiдженнями сучасних вчених, що використовуютьсаме абсолютнi моменти. Способом, що дозволив уникнути обох недолiкiв оцiнок, ста-ло використання псевдомоментiв. Псевдомомент – це числова характеристика, яка засвоєю структурою виражається через рiзницю функцiй розподiлу дослiджуваної таграничної випадкових величин. Тому у випадку рiвностi цих розподiлiв псевдомоментрiвний нулю, що дозволяє здiйснити бiльш точну оцiнку. Структура цих характери-стик може бути дуже рiзноманiтною, що дозволяє використати псевдомомент такоговигляду, який зручний саме для даної конкретної задачi. У статтi використано хара-ктеристики, аналогiчнi до тих, що введенi В. М. Золотарьовим. З їх допомогою ви-вчається швидкiсть збiжностi розподiлiв сум незалежних випадкових величин до нор-мального закону в схемi серiй. Обмеження, якi при цьому накладаються на випадковiдоданки, є не надто суворими – вимагається рiвнiсть нулю математичного сподiвання i скiнченнiсть дисперсiй кожного доданка. Натомiсть одержано оцiнки швидкостi збi-жностi, що виражаються через псевдомоменти рiзного виду. Також у роботi отриманооцiнки для характеристичних функцiй, якi теж виражаються через вказанi характе-ристики. Вони необхiднi для доведення основних результатiв, але мають i самостiйнезначення.
Nitrogênio em soja: qualidade fisiológica das sementes
Authors: Barão Medeiros Letícia , Aisenberg Geison Rodrigo , Peter Márcio , Mengue Rolim Jéssica , Zanatta Aumonde Tiago , Pedó Tiago
Published: June 2021

O objetivo deste estudo foi avaliar os componentes de rendimento e de qualidade fisiológica de sementes de soja cultivadas com aplicação de diferentes doses e épocas de aplicação de nitrogênio. O delineamento inteiramente casualizado, em esquema fatorial 4x2 (quatro doses de nitrogênio e duas épocas de aplicação), com quatro repetições. A aplicação de nitrogênio foi feita na forma de uréia (45% de N), nas doses de 0, 25, 50 e 75 kg N ha- 1 durante a semeadura e no estádio R4 da cultura. Foi avaliado o número de vagens por planta, o número de sementes por planta, a massa de mil sementes, primeira contagem de germinação, porcentagem de germinação, massa seca de parte aérea e raiz. A aplicação de nitrogênio influenciou positivamente nos parâmetros de rendimento da soja na dose de 75 kg N ha-1 durante o enchimento de grãos. Durante a semeadura, a dose de 25 kg N ha-1 resultou em maiores médias da massa seca de parte aérea, 50 kg N ha-1 incrementou a massa de mil grãos e massa seca de raiz e a aplicação de 75 kg N ha-1 na semeadura durante a primeira safra obteve resultados positivos para a primeira contagem de germinação e germinação. Para os resultados da segunda safra, a aplicação de 50 kg N ha-1 em semeadura proporcionou incremento da primeira contagem de germinação.
Fragmentation of Modern Artistic Narrative (English-Language Prose)
Authors: Lushnikova G. I. , Osadchaya T. Yu.
Published: June 2021

The question of the role, forms and functions of fragmentation of modern artistic narra tive is considered. The results of the analy sis of the fragmentary narrative of the works of contemporary  English-speaking  authors (J.   Barnes,   D.   Mitchell,   M. Cunningham, I. Banks, J. Franzen, S. Faulks, J. Eugenides, A. Smith, J. McGregor and others) are presented. The relevance of the study is due to the fact that in the modern literature of the postmodernist direction, nonlinearity of narration, deliberate mixing of temporal, local, descriptive and other layers are becoming widespread, practically becoming the norm. The novelty of the research is seen in the fact that the fragmentation of a literary text is studied at different levels — compositional, content-thematic, plot, ideological-figurative, genre, narrative, chronotopic. It has been proved that the forms of implementation of fragmentariness are quite diverse: irregular division of the text, heterogeneity of themes and ideas, lack of linear development of the plot, combination of elements of different genres, the presence of internal polystylism, the use of different types of narration and narrator, violation of the unity of the chronotope. The analysis of specific material showed that the functions of a fragmentary narrative are determined by each specific context, the leading ones being the impact on the reader, the management of his attention, the placement of accents according to the writer's intention, the creation of the impression of authenticity and reliability.
Duplicity in Novel by M. Spark “Aiding and Abetting”
Authors: Ushakova E. V.
Published: June 2021

The article reveals the specifics of the functioning of the phenomenon of duplicity  in  the novel by the English writer M. Spark “Aiding and Abetting” (2000). The scientific novelty lies in the fact that this work is viewed from this angle for the first time. An overview of a number of existing approaches to the phenomenon of duality in modern literary criticism is presented. The author analyzes pairs of the main characters of the novel, who are doubles, revealed in similar situations related to the themes of fraud and crime. It is shown that in the novel “Aiding and Abetting” the characters play the roles of both antagonists and carnival counterparts. Particular attention is paid to the  combination  inherent in M. Spark’s work in the works of satirical orientation and postmodern play, which is reflected in the change of the narrative perspective, ambiguity and uncertainty of the finale. The meaning of the title of the work is revealed in the context of the realization of the motive of duality, the main moral problems posed in the novel are revealed. The author comes to the conclusion that through the use of doubles, Spark describes the vices of society and the moral degradation of a person.
Izba-Reading Room as a Rural Cultural Center in Buryat-Mongolian Autonomous Soviet Socialist Republic in 1920-1930s
Authors: Soboleva A. N.
Published: June 2021

The features of the emergence and functioning of reading rooms in the Buryat-Mongolian Autonomous Soviet Socialist Republic in the 1920s-1930s are considered. The author analyzes the measures taken by the Soviet government, local cells of the Communist Party and Komsomol activists aimed at strengthening izba-reading rooms on the territory of the republic. The main problems of the organization and activities of izba-reading rooms are investigated in detail, attention is paid to various methods of work to attract the population to new forms of Soviet culture. The relevance of the study is due to the fact that the study   of the role and place of the izba-reading room in the regional cultural space will make an important contribution to the creation of a largescale objective picture of the cultural revolution that took place in the USSR in the 1920s1930s. The scientific novelty lies in the fact that a number of previously unpublished sources are put into circulation, collected directly for this study. This made it possible to highlight some details that previously could not be reflected in other works. As a result   of the study, it was determined that the izbareading room, despite the difficulties that arose (weak resource base, a shortage of trained personnel, low qualifications of workers, cultural and linguistic differences, a wary attitude of the local population  towards  the  events  of the Soviet government) gradually managed to win the sympathy of the adult population and become a reference point of cultural and educational work in the village.
Quantum Physics and Perennial Philosophy: Mirrors of Knowledge
Authors: GIULIODORI Lucio
Published: June 2021

The core of what is defined as Perennial Philosophy is established by ancient traditions of metaphysical thought, which though arising from the most various historical contexts from East to West, outstandingly share some fundamental truths such as the mutual interrelation of all things. Even more astonishingly, however, is how these various truths which spread among different cultures, are currently backed up by the insights of contemporary physics.

This paper aims at underscoring how undeniably compelling, yet uncanny this bond is, primarily on the plane of knowledge, a broader knowledge substantiated by science and philosophy - the two, speak here an unknown language, yet with the same voice: the incommunicability of their truths overlapping with the incommunicability of their real experiences.

Grappling with the dazzling disclosures of these “mirrors of knowledge” is as fascinating as unavoidable. This study takes into account some of them, by uncovering how crucial they are both for the present, and the (albeit acknowledged by the past wisdom) future understanding of the reality we are entangled with.
Post-COVID-19 World Philosophy of Functioning: New Globalisation Challenges
Authors: KRASIVSKYY Orest , MAZIY Natalya , KRASIVSKY Denis , KOTYGORENKO Viktor , ZHUKOVA Halyna
Published: June 2021

The major purpose of the study is to characterise the philosophy of the functioning of the world in such conditions. Methodology of this article included: general scientific methods (formal-logical, systemic, structural-functional, concrete-historical) general logical methods of theoretical analysis (analysis, synthesis, generalisation, comparison, abstraction, analogy, modelling, etc.) specific scientific methods (technical analysis, specification, interpretation, etc.). As a result of the study, the philosophical and social essence of the crisis and pandemic was characterised. Considered how the crisis and pandemic affect the functioning of the suspension and its philosophy of worldview. Determined how strong the impact of COVID-19 and the crisis it has formed. The philosophical and social aspect of the pandemic in modern conditions of development and what new globalisation challenges it entails has been investigated.
Usos de Internet durante la experiencia del embarazo adolescente. Una reflexión sobre la mediación tecnológica
Authors:   , Mondragón Segovia Ivonne
Published: June 2021

El objetivo de la investigación, es indagar sobre cómo se configura la articulación adolescente embarazada+Internet. Aunado a la finalidad de este estudio, se propone: Primero, dar cuenta de cómo la tecnología Internet media la experiencia, e interviene en la percepción de la incertidumbre ante los cambios corporales y de rol que se acontecen. En coincidencia con Lupton (1999) (2013) (2016), se plantea que, en un contexto de inmersión de Internet en varios aspectos de la vida cotidiana, un abanico de herramientas con conexión al ciberespacio (como foros, apps o gadgets) contribuyen a monitorear, medir y pronosticar posibles escenarios de riesgo, con base en métricas o en función a la información que se obtiene. Segundo, resaltar el abordaje de experiencias somático/emotivas, durante las extremas transformaciones corporales dentro del embarazo, que lucen por estar atestadas de incertidumbre. Lundquist (2008), desde una visión fenomenológica, señala el hecho, a veces tan naturalizado, de que en el embarazo se desarrolla otro dentro uno mismo, lo que tiene fuertes implicaciones para el sentido de unicidad -corporal y subjetiva-, la identidad y los futuros vínculos/compromisos que se tendrán con el ser humano en desarrollo. El embarazo adolescente, además, es una situación, muchas veces, de vulnerabilidad, de estigmatización, y está rodeada de expectativas que interfieren o regulan la experiencia encarnada (Ihde, 2004).
Chemical and Biogeochemical Features of Desert Soils of the Central Fergana
Authors: Turdaliev Avazbek , Yuldashev Gulom , Askarov Kamoliddin , Abakumov Evgeny
Published: June 2021

The Fergana valley is a region critically important for food safety in Central Asia. The human-altered soils in Fergana are considered a key component of the transboundary region between sub-boreal and sub-tropic climatic zones. As the results of the investigation of irrigated chloride-sulfate saline soils near the surface showed the deep petrocalcic and petrosalic horizons at various depths with extremely low water and air permeability. The chemical, pedogeochemical, and biogeochemical properties of soils, the content of macroelements, trace elements, lanthanides and radionuclides, and the general geochemical characteristics of desert zone soils were investigated and determined. The background contents of the mentioned elements were recognized. The irragic, salic, gleyic, and gypsic horizons in soils were identified by WRB 2015. They can be used as reference horizons for biogeochemical studies and soil management activities. The irragic, gleyic, carbonate-gypsum horizons, evaporation, oxygenic, and other geochemical barriers were studied and revealed. The processes of accumulation, migration, and differentiation of chemical elements in solum as well as in parent materials occur with the joint effects of exogenous, endopedogenic, and artificial factors. These fluxes of elements, in turn, are affected by the nature of soils and parent materials. In this process, unexplored elements form only scattering fluxes. During the vegetation season, as well as the leaching period, considering the various horizons features will help to save significant amounts of irrigation water.
The Impact of Family and Child-Allowances on Income Inequality in Poland. Gini Decomposition by Income Sources
Authors: Wędrowska Ewa , Muszyńska Joanna
Published: June 2021

Research background: This paper analyses how different income sources affect the level of inequality in Poland, with focus on the role of family and children related allowances in decreasing income inequalities in 2015–2017. Therefore, the study has focused on the various subgroups of households with children.

Purpose: The paper is aimed at examining the extent to which family and children related allowances affect household income inequality and identifying whether they affect inequality in various groups of households in the same way.

Methodology: The study was carried out on micro-data gathered by Eurostat. To examine the extent to which different income components affect income inequality, we decompose the Gini coefficient according to the method introduced by Lerman and Yitzhaki.

Results: Our study revealed that for most households with children, the inequality-reducing effect due to family and children related allowances increased in 2017 compared to 2015. However, despite the additional child-raising benefit under the “Family 500+” programme, income taxes and social security contributions remained by far the most important factor in reducing household income inequalities in Poland.

Novelty: To our knowledge, no study has yet attempted to assess the extent to which family and child-allowances affect income inequality based on real data. The present analysis takes a step towards filling this gap. Unlike other studies based on microsimulation, in this paper we made use of the representative micro-data derived from the EU-SILC study.
Optimization of maturity age for coppice oak forests within Left-Bank Forest-Steppe in Ukraine
Authors: Tkach Victor , Buksha Igor , Slych Oleksandr , Pasternak Volodymyr
Published: June 2021

Oak (Quercus robur L.) forest stands are among the most common forest formations in the forest-steppe zone of Ukraine. Investigations of the patterns of distribution of trees by diameter and the dynamics of the commodity structure of mature oak stands of coppice origin were carried out based on the forest survey data from 28 temporary sample plots, on the sites designated for the final felling in the Left-Bank Forest Steppe of Ukraine (Sumy, Kharkiv, and Poltava Regions). We distributed trees by diameter classes and technical suitability categories. To establish the commodity structure of the stand, we selected model trees that corresponded to the average size of trees in terms of diameter classes and their qualitative characteristics. Then, we constructed a model tree stem profile using Institute of Forest Ecosystems Research (IFER)’s method of “6 points”. Based on stands’ structure and quality condition as well as on the growth tables, the commodity structure dynamics table for the changes in the commodity structure for the coppice oak stands in the Left-Bank Forest Steppe of Ukraine has been developed. The results of the analysis of wood stock dynamics showed that the maximum average increment of class A and B wood is 90–100 years. Therefore, the age of technical maturity and the associated age for the final felling in commercial oak forests of second site class and above should be assigned to 91–100 years.
Effect of game browsing on natural regeneration of European beech (Fagus sylvatica L.) forests in the Krušné hory Mts. (Czech Republic and Germany)
Authors: Fuchs Zdeněk , Vacek Zdeněk , Vacek Stanislav , Gallo Josef
Published: June 2021

Tree damage by game browsing is one of the biggest threats to forest ecosystems at the time of climate change and large-scale forest disturbances. The aim of the paper was to determine the effect of browsing by ungulates on the diversity, abundance and species composition of natural regeneration in forest stands dominated by European beech (Fagus sylvatica L.). The research was conducted on 10 permanent research plots in the Krušné hory Mts. in the Czech Republic and Germany. The density of natural regeneration was in the range of 23,300–114,100 recruits ha−1. A higher proportion of silver birch (Betula pendula Roth.) and rowan (Sorbus aucuparia L.) was found in the regeneration compared to the mature stands. A total of 78% of recruits was damaged by browsing. The most frequently damaged tree species were sycamore (Acer pseudoplatanus L.; 98%) and black alder (Alnus glutinosa [L.] Gaertn.; 97%), while Norway spruce (Picea abies [L.] Karst; 31%) and sessile oak (Quercus petraea [Matt.] Liebl.; 50%) were the least affected. Seventy-nine percent of European beech recruits were damaged. The game significantly reduced the height of regeneration by up to 40%, especially by terminal browsing. Browsing also negatively affected the quality and abundance of regeneration. For successful dynamics of species-rich natural forest ecosystems, it is necessary to minimize tree damage by game browsing. These main measures include the reduction of ungulate population levels and the optimization of their age structure and sex ratio, an increase in the number of overwintering enclosures and food fields for game and a change in the political approach to game management with sufficient consideration of forestry interests.
Quarter of a century of forest fertilization and liming research at the Department of Silviculture in Prague, Czech Republic
Authors: Gallo Josef , Vacek Zdeněk , Vacek Stanislav
Published: June 2021

Fertilization and liming began to be used in forestry at the beginning of the 20th century in order to increase growth, for improvement of health status or higher resistance to biotic and abiotic factors. The review summarizes results of 48 studies of forest fertilization, nutrition and liming published in scientific journals by authors of Department of Silviculture in Prague over the past more than 20 years. They deal mainly with monitoring of the effect of fertilization and liming applied during planting or shortly after planting of 18 tree species. Moreover, the results of fertilization in older stands are presented. Separate chapters deal with enhancing substrates (soil conditioners and phytohormones). All forest vegetation ranges are covered, from lowland forests to the subalpine belt of grass vegetation in 11 Natural Forest Areas. Forest fertilizing and liming proved beneficial according to most of the studies. The use of fertilizers can be detected in soils after decades. On the other hand, only in a minority of cases was fertilization reflected in the chemistry of the assimilation apparatus and other parts of the trees for a longer period. The main positive effect of fertilization and liming was increase of tree growth and foliation and decrease of mortality and yellowing symptoms. Inconsistent results were documented in some cases, especially for brassinosteroids and alginite compared to good results in slow release fertilizer done by spot-application. The type of product, concentration, time and method of application play an important role in the appropriate use of fertilization and liming.
Varroacide Effectiveness of Polyvar Yellow® (Flumethrin 275 mg) Preparation
Authors: Bąk Beata , Wilde Jerzy , Siuda Maciej , Wilk Jakub
Published: June 2021

The aim of the experiment was to check the effectiveness of the varroacide veterinary product called PolyVar Yellow® (flumethrin 275 mg) in field conditions in the area of north-eastern Poland. The experiment was carried out on twenty bee colonies, of which in ten (group PY) were tested with the veterinary product and the remaining ten constituted a control group without anti-varroosis treatment (group C). Treatment began in mid-August and lasted until the end of October when bee flights ceased. A control treatment was then conducted with a 3.2% oxalic acid solution. The effectiveness of Varroacide of PolyVar Yellow® was estimated on the basis of the parasite falls on the Varroa sticky inserts and based on the infestation rate of bees with the parasite before and after the treatment. High varroacide effectiveness of the preparation was obtained at 97%. The tested veterinary product was shown to protect effectively bee colonies against reinvasion of Varroa destructor mites.
Methodology for Investment Evaluation in Electricity Generation Modules according to the Requirements of the European Union
Authors: Vempere L. , Jasevics A. , Zemite L. , Vempers G.
Published: June 2021

For a country to be able to survive successfully, one of the criteria is a stable electric power supply that meets certain technical parameters. In the European Union, several countries are working synchronously to ensure the safety of electricity systems. In order to achieve such synchronous operation, the European Union has adopted Regulation No. 2016/631, which sets out the requirements for grid-connected generators. The present article develops a model to assess the compliance of generators with the requirements of the Regulation, as well as conducts economic analysis to assess which generators need investment and whether their use will provide economic benefits. In this way, the state can create a priority list, where generators are divided according to their socio-economic benefits. In 2025, the Baltic States plan to become integrated into the Energy Systems Association of Continental Europe and work synchronously with the other European Union countries, disconnected from the current BRELL energy systems. Therefore, the model developed in the article is applied to the case of Latvia to determine the necessary investments, as a result of which alternatives are considered for improving the current situation.
Simplified Model for Evaluation of Hydropower Plant Conversion into Pumped Storage Hydropower Plant
Authors: Kiene S. , Linkevics O.
Published: June 2021

Increasing capacity of intermittent generation brings new challenges to balance demand and supply in power systems. With retirement of conventional fossil generation, the role of energy storage is increasing. One of the most competitive storage technologies is pumped storage hydropower plant (PSHP). Usually, such PSHPs are constructed as green field solutions, but in some cases conversion of a hydropower plant into a pump storage hydropower plant by building a pump station is possible. To evaluate the feasibility of such modernisation it is necessary to estimate the benefits of PSHP operation. The simplified model was developed for simulation of charging and discharging cycles of PSHP in Latvian power system and trading electricity in Nord Pool power exchange. The nature of this task is stochastic as the price volatility has a trend to increase with expansion of wind and solar power plant capacity. Results of PSHP operation simulation were then used in the economic model to evaluate the feasibility of the proposed conversion.
Heat Load Numerical Prediction for District Heating System Operational Control
Authors: Rusovs D. , Jakovleva L. , Zentins V. , Baltputnis K.
Published: June 2021

To develop an advanced control of thermal energy supply for domestic heating, a number of new challenges need to be solved, such as the emerging need to plan operation in accordance with an energy market-based environment. However, to move towards this goal, it is necessary to develop forecasting tools for short- and long-term planning, taking into account data about the operation of existing heating systems. The paper considers the real operational parameters of five different heating networks in Latvia over a period of five years. The application of regression analysis for heating load dependency on ambient temperature results in the formulation of normalized slope for the regression curves of the studied systems. The value of this parameter, the normalized slope, allows describing the performance of particular heating systems. Moreover, a heat load forecasting approach is presented by an application of multiple regression methods. This short-term (day-ahead) forecasting tool is tested on data from a relatively small district heating system with an average load of 20 MW at ambient temperature of 0 °C. The deviations of the actual heat load demand from the one forecasted with various training data set sizes and polynomial orders are evaluated for two testing periods in January of 2018. Forecast accuracy is assessed by two parameters – mean absolute percentage error and normalized mean bias error.
CHPP Operation Mode Optimization under Electricity and Gas Market Conditions using a Genetic Algorithm
Authors: Kozadajevs J. , Dolgicers A. , Boreiko D.
Published: June 2021

The article presents an operation planning optimisation approach using a genetic algorithm for CHPPs in an urban heat supply zone. Changes in market environment will result in a significant change in energy system planning and operation. For efficient production planning in the liberalized power markets, it is paramount to determine the optimal strategies over a time horizon. Solution of an optimization task of such complexity requires a well-crafted set of tailored modelling, simulation, optimization, and forecasting tools. A well-designed solution is unthinkable without a great number of production units, such as gas turbines, steam turbines, heat-only boilers, and thermal storages, reflected by the optimization model.
A Review: The Energy Poverty Issue in the European Union and Latvia
Authors: Zalostiba D. , Kiselovs D.
Published: June 2021

Energy poverty is a growing concern in the European Union. Following energy market liberalization, the problem of energy affordability has entered the political discussion, making it necessary to estimate its dimensions, develop and implement a policy and means for its mitigation. To evaluate the situation in Latvia, the paper reviews the way energy poverty is currently defined and measured, investigating the advantages and shortcomings of various definitions and approaches. It then provides a brief analysis of energy poverty in three char-acterising dimensions: low income, high costs of energy services and unsatisfactory housing conditions (primarily related to energy efficiency aspects), using available statistical data. The characterising indicators of energy poverty are compared with the EU average values. Finally, this paper highlights individual policy measures for diminishing energy poverty.
A Structured Approach for Synchronising the Applications of Failure Mode and Effects Analysis
Authors: Alruqi Mansoor , Baumers Martin , Branson David , Farndon Robert
Published: June 2021

Failure Mode and Effects Analysis (FMEA) is a systematic approach for evaluating the potential failure modes in a system, and is mainly employed in three distinct tasks labelled: (1) Functional FMEA – evaluating those failures associated with product functional definition, (2) Design FMEA – analysing those failures associated with design definition and (3) Process FMEA – assessing potential failures in manufacturing and assembly processes. The literature review has shown limited works on the field of synchronising these different tasks into a working model. To address this gap, this research developed a framework for integrating these tasks of FMEAs, and then qualitatively validating the proposed framework. This research adopted a semi-structured questionnaire to collect experts’ feedback and validate the proposed framework. The t-test was then employed to evaluate the collected feedback. The findings highlight that the proposed framework is applicable and could facilitate the synchronisation of the different tasks of FMEA. This research presents a methodological approach for executing and synchronising FMEAs. Therefore, the proposed framework is practically relevant as an aid for the practitioners in catching the cascading failures and reducing the relevant impact.
The Impact of Lean Manufacturing on Enviromental Performance in Moroccan Automotive Industry
Authors: Bouazza Yassine , Lajjam Azza , Dkhissi Btissam
Published: June 2021

Due to an increase in energy price and pollution plus environmental regulations, companies start to adopt green policies. In fact, companies are encouraged by governments to develop strategies to achieve more sustainable operations. Based on this literature review the contribution of Lean Manufacturing on environmental performances will be discussed, a survey of 50 different automotive companies based in Morocco, shows how they are carrying out manufacturing and environmental practices. The result of this study shows a positive impact of advanced Lean Manufacturing’s tools on the environmental performance and contribute to the present literature on environmentally friendly Manufacturing. The findings and proposals of this paper can be a beginning step for Moroccan companies to completely use their capability of environmental practices and improve their manufacturing productivity performance while identifying trends in organizational development.
Implementation of Lean Instruments in Ceramics Industries
Authors: Ulewicz Robert , Kleszcz Daniel , Ulewicz Małgorzata
Published: June 2021

The article presents the results of the research on the level of implementation of Lean instruments in the ceramics industry. The research was carried out in ceramic factories in Poland and Germany. Based on the results obtained, the most commonly used Lean instruments in the ceramics industry were defined. The dependence of the use of Lean instruments on the size of the enterprise was also determined. It was established that the Lean activities undertaken in the ceramics industry are focused solely on the implementation of individual methods and tools, without a pre-defined goal. This approach in the ceramics industry is ineffective, but unfortunately it is most often used in the implementation of the Lean philosophy, especially in small ceramics enterprises.
A New Demodulation Method for Mechanical Fault Feature Extraction based on LOD and IEE
Authors: Zhang Kang , Niu Xiaorui , Ma Yunjiao , Chen Xiangmin , Liao Lida , Wu Jiateng
Published: June 2021

The rolling bearing and gear fault features are generally shown as modulation characteristics of their vibration signals. The empirical envelope (EE) method is an accordingly common demodulation method. However, the EE method has the defects of over- and undershoot, which may lead to demodulation error. According to this, an envelope optimization algorithm -- empirical optimal envelope (EOE) is introduced into the EE method, and an improved empirical envelope (IEE) method is obtained to calculate the instantaneous amplitude and instantaneous frequency of mono-component modulation signal. Furthermore, aiming at the actual measured mechanical vibration signal has multi-component modulation feature, the IEE method is combined with an adaptive signal decomposition method -- local oscillatory characteristic decomposition (LOD) proposed by the author, thereby a new multi-component signal demodulation method based on LOD and IEE is proposed. The proposed method is compared with Hilbert transform (HT) and Teager energy operator (TEO) demodulation methods by the simulation signal and actual measured mechanical vibration signal. The results show that the demodulation effects including edge effects, negative frequency, over- and undershoot of the proposed method are significantly improved and can extract the rolling bearing and gear fault feature information clearly.
3D Printed Pressure Sensor Based on Surface Acoustic Wave Resonator
Authors: Hu Baofa , Li Zhiwei , Wan Yuanjie , Zhou Peng , Zhang Chunquan , San Haisheng
Published: June 2021

This paper reports a 3-dimentional (3D) pressure sensor based on surface acoustic wave (SAW) resonators. The SAW resonators were designed and fabricated on 128°Y-X LiNbO3 substrate using the MEMS technology. The pressure sensing structure was 3D-printed using polyactic acid plastic, and two SAW resonators were integrated in the 3D-printed chamber structure for both temperature and pressure sensing. The SAW-based gas pressure sensors demonstrate a sensitivity of 589 ppm/MPa at the pressure range of 100-600 kPa and temperature of 40 °C.
Natural Decomposer (MOL) developed from various banana waste and different storage times
Authors: YUNITA DEWI , IRFAN IRFAN , MARLINA MARLINA
Published: June 2021

MOL is a local microorganism or natural decomposer that is used as a starter culture in production of organic fertilizers which is known as bokashi. The advantage of using MOL is that it can be made from cheap materials or by utilizing agricultural waste so that it can increase the added value of waste as well as reduce the environmental pollution. The use of MOL as a biodecomposer in production of bokashi can accelerate the fermentation process. This study aimed to produce MOL where the characteristic is similar with commercial Effective Microorganism (EM4). This study used a factorial randomized block design (RBD) with 2 factors. First factor was the types of banana (J) consisted of three levels, namely awak banana (Musa paradisiacal var. Awak; J1), barangan banana (Musa acuminate Colla; J2), and kepok banana (Musa acuminata balbisiana Colla; J3). Second factor was the storage times consisted of three levels, namely 0 weeks after fermentation (L1), 2 weeks after fermentation (L2), and 4 weeks after fermentation (L3). The analysis carried out after fermentation included total cell counts (TCC), pH value, temperature, and organoleptic test in the form of hedonic test for color and description test for aroma. The best sample was determined based on the highest TCC, the lowest pH value and aroma using a ranking test. The best treatment was obtained from J1L2 treatment (awak banana and 2 weeks after fermentation) with 1.8 × 109 CFU/ml of TCC, 3.17 of pH and medium tapai aroma.
Diversity and population structure of Dipterocarpaceae species in Weh Island Nature Tourism Park, Indonesia
Authors: FAHMI RIDHA UL , RASNOVI SAIDA , HARNELLY ESSY
Published: June 2021

The Dipterocarpaceae family is one of the identified plant groups with high conservation value that exist in Weh Island Nature Tourism Park. However, the data availability on the species diversity and population structure of Dipterocarpaceae in Weh island in particular and Aceh in general is still very limited. Thus, it is necessary to conduct studies on species diversity and population structure of Dipterocarpaceae from Weh Island. This study aims to obtain data on species abundance and diversity, species composition of each stratum, population structure, and stand structure of Dipterocarpaceae in Weh Island Nature Tourism Park. This research utilized transect method with randomly selected plots according to topographic conditions. We found two Dipterocarpaceae species: Shorea sumatrana (Slooten) Desch and Dipterocarpus hasseltii Blume. Shorea sumatrana (Slooten) Desch has the greatest abundance of all types and strata. The diversity of Dipterocarpaceae species in Weh Island Nature Tourism Park is categorized as low because the diversity index value is in the range of H'1. This means that the presence of seedling and sapling strata from each species has a major effect on the survival of the Dipterocarpaceae family in the future. The stand structure of the Dipterocarpaceae family in normal conditions is indicated by an inverted “J” shaped diagram.
The effect of organic fertilizers on the leaf morphology and stomatal density of Pogostemon cablin Benth
Authors: ZAHARA MEUTIA , SUWARNIATI SUWARNIATI , AINI QURRATU , MUSLIM MUSLIM
Published: June 2021

Pogostemon cablin Benth is one of the most important crops grown in Indonesia, especially in Aceh province. It is well known as Patchouli belongs to Lamiaceae family and shows a great demand for perfume, luxury products, food and beverage industry. This study conducted to determine the effect of organic fertilizers application on the leaf morphology and stomatal density on the Pogostemon cablin Benth. The seedlings were transplanted for three months on the soil mixed either with manure or compost. The results obtained that was no significant different in affecting the leaf morphology of Pogostemon cablin Benth. The treatment with manure application showed the highest leaf length (15.23 cm) and the highest leaf width (10.5 cm), the leaf color is green. While the stomatal density obtained the significant difference among the treatments, the highest stomatal density in both side of the leaf surface showed in the application of manure, 663.5 mm-2 for adaxial part and 486.38 mm-2 for abaxial part. Stomatal type is anisocytic and on the leaf surface was found glandular and non-glandular trichomes.
PEMIDAAN DALAM PRESPEKTIF SISTEM HUKUM PIDANA DI INDONESIA
Authors: Arief Moh. Zainol
Published: June 2021

Pemidanaan merupakan penjatuhan pidana/sentencing sebagai upaya yang sah yang dilandasi oleh hukum untuk mengenakan nestapa penderitaan pada seseorang yang melalui proses peradilan pidana terbukti secara sah dn meyakinkan bersalah melakukan suatu tindak pidana. Pidana dan pemidanaan dalam ilmu pengetahuan hukum pidana tidak begitu banyak yang memberikan sorotan, dan bahkan terkesan sebagai “anak tiri”. Ilmu pengetahuan hukum pidana yang dikembangkan dewasa ini masih banyak membicarakan masalah-masalah dogmatik hukum pidana dari pada sanksi pidana. Pembahasan tentang sanksi pidana yang bersifat memperkokoh norma hukum pidana belum banyak dilakukan, sehingga pembahasan seluruh isi hukum pidana dirasakan masih belum serasi.Tujuan dalam penelitian ini, yaitu : untuk mengkaji dan menganalisa Prinsip Pemidaan Dalam Sistem Hukum Di Indonesia. Metode pendekatan masalah yang digunakan oleh peneliti dengan cara menggunakan  yuridis normatif dimana  mengkaji peraturan perundang-undangan mengenai orientasi prinsip pemidanaan sistem sistem hukum di Indonesia.
PUTUSAN VERSTEK DALAM PERKARA PERCERAIAN DI PENGADILAN AGAMA SUMENEP
Authors: Sutrisni Sutrisni
Published: June 2021

Proses penerapan pembuktian dalam acara verstek perkara perceraian di Pengadilan Agama Sumenep meliputi tiga tahap, yakni tahap pemanggilan pihak-pihak, pemeriksaan perkara dan pengambilan keputusan. Prosesi tersebut telah sesuai dengan hukum acara perdata. Hanya saja penyelesaian perkara perceraian yang diputus secara verstek di Pengadilan Agama Sumenep harus melalui pembuktian, hal ini menyimpang dari ketentuan umum dalam HIR, bahwa dalam acara verstek tidak penlu dilakukan pembuktian. Dasar hukum yang dipakai oleh hakim Pengadilan Agama Sumenep sesuai dengan pendapat Mahkamah Agung RI mengenai perlunya pembuktian dalam acara verstek perkara perceraian. Sedangkan pertimbangan hukum yang dipakai adalah : setiap gugatan harus didukung oleh bukti, dalam rangka usaha perdamaian secara maksimal, dan untuk lebih berhati-hati karena perceraian merupakan perkara yang rumit dan lebih kompleks, serta untuk melindungi kepentingan pihak-pihak. Pertim Nomor 9 tahun 1975.