bluuebunny/crossref_metadata_2025 huggingface dataset:
Aproximación a las libertades educativas desde los principios del Derecho eclesiástico peruano
Authors: Mosquera Susana
Published: June 2023

Partiendo de la esencial naturaleza de derecho y deber que tiene la educación, y tomando en cuenta la influencia que el modelo jurí-dico-político de relaciones Iglesia-Estado tiene en la materia, este trabajo trata de ofrecer elementos que permitan resolver, en base a los principios del Derecho eclesiástico, los problemas que surgen de la convivencia de un marco regulatorio de derecho público en materia educativa que converge con la necesaria garantía de las libertades individuales.
Régimen jurídico de la educación universitaria privada en Uruguay
Authors: Sheppard Gelsi Marcelo
Published: June 2023

El presente artículo analiza el régimen jurídico de la educación universitaria privada en Uruguay, examinando la relación entre Constitución y persona humana, la libertad cultural y de enseñanza, el principio de subsidiariedad y la autonomía universitaria.
Al mismo tiempo hace un resumen de los instrumentos internacionales y leyes relativos a la enseñanza y a la educación en el país, para luego estudiar los conceptos de educación superior, terciaria y universitaria. Finalmente examina la normativa aplicable a la educación universitaria privada.
UPAYA PENINGKATAN HASIL BELAJAR MATEMATIKA MELALUI MODEL PROJECT BASED LEARNING DAN MEDIA VISUAL INTERAKTIF TEMA ENERGI DAN PERUBAHANNYA
Authors: Az Zahra Adzkia , Mursidah Rahmah  , Siti Nurlaela  , Nur Ilma Melati
Published: June 2023

Penelitian ini menggunakan pendekatan Penelitian Tindakan Kelas Kolaboratif (PTKK) yang bertujuan untuk mengevaluasi penggunaan model Project-Based Learning (PJBL) dan media visual interaktif sebagai upaya untuk meningkatkan hasil belajar matematika pada tema energi dan perubahan. Penelitian ini dilakukan dengan melibatkan siswa kelas III C di SDN Polisi 1 Kota Bogor sebagai subjek penelitian. Jenis penelitian ini dilakukan dengan menggunakan dua siklus. Setiap siklus terdiri dari perencanaan, pelaksanaan, pengamatan dan refleksi. Teknik dan alat pengumpulan data pada penelitian ini menggunakan observasi, test dan dokumentasi. Hasil penelitian ini menunjukkan bahwa dengan menggunakan Model Pembelajaran Project-Based Learning (PJBL) dan bantuan media Visual Interaktif dapat menjadi variasi pembelajaran yang menyenangkan bagi peserta didik sehingga terbukti meningkatkan hasil belajar peserta didik di Kelas III C SD Negeri Polisi 1 Kota Bogor. Sebelum menggunakan Model Pembelajaran Project Based Learning (PJBL) hasil belajar peserta didik hanya mencapai nilai rata-rata 63,52 kemudian terjadi peningkatan setelah menggunakan Model Pembelajaran Project Based Learning (PJBL) dan bantuan media Visual Interaktif menjadi 66,50 pada siklus 1 dan 92,52 pada siklus 2. Oleh karena itu penerapan model Project-Based Learning (PJBL) dapat meningkatkan hasil belajar matematika dalam tema energi dan perubahannya materi satuan waktu.

 

Kata  Kunci :Project Based Learning, Visual Interaktif,  Hasil Belajar Matematika.
Perspective mobile robotic complex for carrying out routine operations to clean ship hulls from fouling
Authors: Ермолов И.Л. , Князьков М.М. , Семенов Е.А. , Суханов А.Н.
Published: June 2023

В статье исследуется облик перспективного робототехнического комплекса, предназначенный для проведения регламентных операций по очистке корпусов судов от обрастаний. Крупные современные верфи и судоремонтные заводы все чаще внедряют в свои технологические процессы мобильные робототехнические комплексы (МРК), которые помогают автоматизировать периодические регламентные операции по обслуживанию корпусов судов. Был проведен анализ различных типов конструкций МРК, способных проводить регламентные работы по обслуживанию корпусов судов. Стоит отметить, что практически все разработанные и уже реально применяемые МРК могут функционировать либо только в воздушной, либо только в водной среде, что накладывает существенные ограничения к их применению. Те немногие МРК, которые способны работать в различных средах, в своем большинстве могут перемещаться только по ферромагнитным поверхностям, что также ограничивает их использование. Предлагается к разработке МРК корабельного базирования, который можно было бы использовать для очистки корпусов судов вне зависимости от свойств материала корпуса, как в воздушной, так и в водной среде без необходимости захода судна в порт и его размещения в сухом доке.

The article suggests the appearance of a promising robotic complex for routine operations to clean the hulls of ships from fouling. Large modern shipyards and small shipyards are increasingly integrating mobile robotic systems (MRS) into their technological processes, which help automate periodic scheduled maintenance operations for ship hulls. The analysis of various types of MRS capable of carrying out routine maintenance of ship hulls. It is worth noting that almost all developed and already actually used MRS can function either only in the air or only underwater environment, which imposes significant restrictions on their use. The few MRS that are able to work in various environments, for the most part, can only move on ferromagnetic surfaces, which also limits their use. Proposed for development a ship-based MRS, which could be used to clean the hulls of ships, regardless of the properties of the hull material, both in the air and underwater environment without the need for the ship to enter the port and place it in dry dock.
On the issue of conducting thermal engineering tests of ship's main electronically controlled high-speed engines
Authors: Герасиди В.В. , Лисаченко А.В.
Published: June 2023

В работе выполнен анализ методики проведения теплотехнических испытаний современных электронно-управляемых высокооборотных двигателей, применяемых в качестве главных и вспомогательных двигателей, отвечающих за движение судна и входящих в состав основной и аварийной электростанции, грунтонасосных и подруливающих устройств. Теплотехнические испытания входят в состав приемо-сдаточных испытаний, и являются неотъемлемой частью проверки инспектором Регистра, а также входят в ежегодное, очередное и внеочередное освидетельствование судовых главных двигателей. Выполнен анализ условий проведения теплотехнических испытаний применительно к современным системам контроля и управления судовых современных высокооборотных двигателей. На примере главного двигателя фирмы "Caterpillar" С32 ACERT представлен весь объем испытаний, включая инструментарий, обработку и нормирование теплофизических параметров, полученных во время эксперимента. Проводимые исследования показали, что во время испытаний были выявлены нехарактерные повышения температуры отработавших газов и давление наддува при минимальной нагрузке на двигатель, которые могли привести к отказу элементов систем двигателя. Проводимые исследования судовых энергетических установок, на основе применения безразборных методов диагностики морских судов в эксплуатации, лежат в основе системы управления автономных судов.

The paper analyzes the methods of thermal engineering tests of modern electronically controlled high-speed engines used as main and auxiliary engines responsible for the movement of the vessel and included in the main and emergency power plants, ground pumps and thrusters. Thermal engineering tests are part of the acceptance tests, and are an integral part of the inspection by the Register inspector, and are also included in the annual, regular and extraordinary inspection of ship's main engines. The analysis of the conditions of thermal engineering tests in relation to modern control and control systems of modern high-speed marine engines is carried out. Using the example of the Caterpillar C32 ACERT main engine, the entire scope of tests is presented, including instrumentation, processing and normalization of thermophysical parameters obtained during the experiment. The conducted studies have shown that during the tests, uncharacteristic increases in exhaust gas temperature and boost pressure were detected with minimal load on the engine, which could lead to failure of engine system elements. The ongoing research of marine power plants, based on the use of non-selective methods of diagnostics of marine vessels in operation, are the basis of the control system of autonomous vessels.
Efficiency of combined gas turbine plants at partial loads under different types of loading
Authors: Дологлонян А.В. , Матвеенко В.Т. , Клименко А.Г.
Published: June 2023

Комбинированные установки на базе газотурбинных двигателей (ГТД) и установок органического цикла Ренкина (ОЦР) наземного, морского и подводного базирования часто работают на переменных нагрузках в зависимости от условий эксплуатации. Поэтому необходимо оценить их энергоэффективность для различных схем ГТД, ОЦР и рабочих тел на частичных нагрузках при различных способах нагружения. Предметом рассмотрения в статье является исследование влияния схем микрогазотурбинных двигателей (МГТД), ОЦР и рода рабочего тела на эффективность комбинированных микрогазотурбинных установок. Показано, что наиболее эффективной комбинированной микрогазотурбинной установки для всех режимов нагружения и во всем диапазоне мощностей является комбинация МГТД на базе простого цикла с турбокомпрессорным утилизатором и регенерацией, а также регенеративной установки ОЦР. Установлено, что наиболее предпочтительным рабочим телом ОЦР для большинства схем ГТД является R-123.

Combined units based on gas turbine engines (GTE) and Rankine organic cycle units (ROCU) of land, sea and submarine basing often operate at variable loads depending on the operating conditions. Therefore, it is necessary to evaluate their energy efficiency for different schemes of GTEs, ORC and working bodies at partial loads at different methods of loading. The subject of the article is a study of the influence of schemes of microgas turbine engines (MGTE), OTRs and the type of working body on the efficiency of combined microgasturbine plants. It is shown that the most efficient combined microgasturbine unit for all loading modes and in all power range is a combination of a simple cycle MGTE with a turbocharger utilizer and regeneration, as well as a regenerative ORC unit. It is established that the most preferable working body of the ORC for the majority of GTE schemes is R-123.
Probabilistic detection characteristics and system sensitivity of the detector of a moving noise source
Authors: Егоров С.Б. , Горбачев Р.И. , Менькова А.Л.
Published: June 2023

В данной работе рассматривается автоматический обнаружитель шумового сигнала движущегося источника шумоизлучения, работающий непрерывно во времени и переходящий в режим обнаружения, когда источник входит в телесный угол главного максимума характеристики направленности приемной антенны. Обнаружитель содержит индикаторное устройство, состоящее из двух последовательно включенных селекторов сигнала: первого – по уровню, второго – по длительности. Получена вероятностная характеристика обнаружения сигнала в виде зависимости вероятности обнаружения от отношения сигнал/помеха на выходе приёмного тракта. Выполнен анализ влияния движения источника сигнала на параметры вероятностной характеристики и обосновано упрощение её выражения при обнаружении слабого сигнала. Введено понятие "аппаратная" чувствительность обнаружителя как пороговое отношение сигнал/помеха по мощности на выходе приёмного тракта. Введён количественный критерий режима обнаружения слабого сигнала и предложена упрощённая методика оценки аппаратной чувствительности в этом случае. Показана прямая зависимость аппаратной чувствительности от эквивалентной относительной длительности проходной характеристики источника по выходу приёмного тракта.

This article considers an automatic detector of a noise signal from a moving source, which operates continuously in time and switches to the detection mode when the source enters to the solid angle of the main directivity beam of the receiver’s antenna. The detector contains an indicator block consisting of two signal selectors connected one after another: the first one by level, the second one by time. The probabilistic characteristic of detection signal from a moving noise source in the form depended on the detection probability and the signal-to-noise ratio at the receiver’s output is proposed. Also we have done the influence analysis of the signal source motion on the probabilistic characteristic parameters, and as particular result the simplification is proposed for the weak signals case. The concept of detector’s "system" sensitivity is introduced as a threshold signal-to-noise ratio in terms of power at the receiver’s output. A quantitative criterion of the weak signal detection mode is introduced and a simplified method for evaluating system sensitivity for this case is proposed. The direct dependence of the system sensitivity on the equivalent relative duration of the receiver’s transmission characteristic is shown.
Visualization of the predictive trajectory as augmented reality to support vessel motion control in the conditions of inland waterways
Authors: Галеев Р.Э. , Федосенко Ю.С.
Published: June 2023

Движение водоизмещающего судна по курсу в линейных районах и акваториях внутренних водных путей (ВВП) осуществляется обычно в стесненных навигационных условиях (СНУ). К ним, например, относятся участки с регулируемым движением и всевозможные помехи. В силу наличия таких ограничений движению судна по курсу судоводитель должен уметь в сжатые промежутки времени, на коротких дистанциях принимать решения, обусловливаемые текущей эксплуатационной ситуацией. Ошибочное прогнозирование траектории движения судна с последующим принятием не вполне корректного решения может привести к нештатным ситуациям таким, как посадка судна на мель, касание затопленных предметов, навал, столкновение с гидротехническими сооружениями и т.п. Один из возможных путей совершенствования способов управления движением судна по курсу в СНУ заключается в реализации технологии дополненной реальности при отображении на мониторе ходового мостика в реальном масштабе времени прогнозной траектории движения судна вкупе с цифровым двойником видимой панорамы текущей судоходной обстановки. Статья посвящена обсуждению такого подхода, реализованного на основе теоретического исследования, последующей разработки модельно-алгоритмического обеспечения и его экспериментального апробирования.

The movement of a displacement vessel along the course in linear areas and waters of inland waterways (IWW) is usually carried out in cramped navigation conditions (CNC). These, for example, include areas with controlled traffic and all kinds of interference. Due to the presence of such restrictions on the movement of the vessel along the course, the navigator must be able to make decisions in short periods of time, at short distances, due to the current operational situation. Erroneous prediction of the trajectory of the vessel, followed by the adoption of an incorrect decision, can lead to abnormal situations such as stranding, touching submerged objects, bulk, collision with hydraulic structures. One of the possible ways to improve the methods of controlling the movement of the vessel along the course in the CNC is to implement augmented reality technology when displaying on the monitor of the navigation bridge in real time the forecast trajectory of the vessel, coupled with a digital double of the visible panorama of the current navigational situation. The article is devoted to the discussion of such an approach, implemented on the basis of theoretical research, subsequent development of model-algorithmic support and its experimental testing.
Influence of preheating of the edge of a steel plate on the intensity of residual stresses formed as a result of electric arc welding
Authors: Ткачева А.В. , Абашкин Е.Е.
Published: June 2023

Работа посвящена электродуговой сварке с предварительным подогревом кромок пластин движущимся источником. Исследуется влияние ширины источника предварительного нагрева на распределение интенсивности остаточных напряжений. Материал пластины принимается упруго пластическим, деформации малыми. В качестве математической модели используется модель Прандтля-Рейса, где закон Гука заменен законом Дюамеля-Неймана. Упругие постоянные и предел текучести полагаются зависимыми от температуры. В качестве условия пластического течения используется видоизменённое условие Мизиса, в котором учитываются вязкие свойства материала. Источник тепла от электродуговой сварки моделируется с помощью двойного эллипсоида, предложенного Голдаком. Решение задачи находится численно с помощью итерационных методов. В результате анализа интенсивности остаточных напряжений материале пластины, полученных при помощи автоматической электродуговой сварки с предварительным подогревом движущимся источником тепла, делается вывод эффективного использования подогрева с обратной стороны пластины, при этом ширина источника должна быть 20 мм.

The work is devoted to electric arc welding with preheating of the edges of the plates by a moving source. The influence of the width of the preheating source on the intensity distribution of residual stresses is investigated. The plate material is assumed to be elastic-plastic, and the deformations are small. As a mathematical model, the Prandtl-Reis model is used, where Hooke's law is replaced by the Duhamel-Neumann law. Elastic constants and yield strength are assumed to be temperature dependent. As a plastic flow condition, a modified Mises condition is used, which takes into account the viscous properties of the material. The heat source from arc welding is modeled using the double ellipsoid proposed by Goldak. The solution of the problem is found numerically using iterative methods. As a result of the analysis of the intensity of residual stresses in the plate material obtained by automatic arc welding with preheating by a moving heat source, it is concluded that heating from the reverse side of the plate is effectively used, while the width of the source should be 20 mm.
Solution of the problem of swirling fluid flow in a ring channel
Authors: Шарапов Р.Р. , Бойчук И.П. , Савичев А.О.
Published: June 2023

В статье представлено решение задачи о закрученном течении несжимаемой жидкости в винтовом канале. Такое течение можно рассматривать как приближение вихревого движения реальной жидкости в случае, когда силы инерции преобладают над силами вязкости. Течение характеризуется трехмерностью поля скоростей с сохранением всех трех компонент вектора скорости. Организация таких течений возможна при применении различных видов завихрителей в каналах. Для данного течения реализуется условие параллельности вектора линейной скорости и вектора вихря. На входе в канал жидкость вращается как твердое тело с заданной угловой скоростью. Для такого условия получено решение – функция тока. Общее решение для функции тока представляет собой сумму линейной комбинации функций Бесселя и функции Ломмеля. Полученное решение даст возможность определить характеристики течения, а также проанализировать влияние геометрии кольцевого канала на структуру вихревого течения.

The paper presents a solution to the problem of the swirling flow of an incompressible fluid in a vortex channel. Such flow can be considered as a vortex motion of a real liquid. In this case, the forces of inertia prevail over the forces of viscosity. The flow is characterized by a three-dimensional velocity field with preservation of all three components of the velocity vector. Organization of such flows is possible with application of different types of vortex generators in channels. The condition of parallelism of linear velocity vector and vortex vector is realized for this flow. At the channel inlet, the liquid rotates as a solid with a given angular velocity. For this condition, the solution - the current function - has been obtained. General solution for the current function is a sum of linear combination of Bessel and Lommel functions. The obtained solution makes it possible to determine the flow characteristics as well as to analyze the influence of the annular channel geometry on the structure of the vortex flow.
Performance of ANN in Predicting the Tensile and Shear Strength of Al-Steel Explosive Clads
Authors: Saravanan  , K Kumararaja
Published: June 2023

In this study, an artificial neural network (ANN) model is created to predict aluminium-stainless steel explosive clads' tensile and shear strengths. The parameters for the explosive cladding process, such as the loading ratio (mass ratio of the explosive and the flyer, 0.6-1.0), standoff distance (5-9 mm), preset angle (0°-10°), and groove in the base plate (V/Dovetail), were altered. The ANN algorithm was trained in Python using the tensile and shear strengths gathered from 80% of the experiments (60), trials, and prior results. The constructed model was evaluated utilizing the remaining experimental results. The ANN model successfully predicts the tensile and shear strengths with an accuracy of less than 10% deviation from the experimental result.
Integrated Application-Based Digital Learning Technology in Successful Learning Activities During the Pandemic
Authors: Mahsusi Mahsusi , Hudaa Syihaabul , Nuryani Nuryani , Bahtiar Ahmad , Subuki Makyun
Published: June 2023

This study aimed to look at madrasah's efforts in developing a learning system through "digital learning." This was done by examining the digital learning system implemented at MAN in terms of its advantages and disadvantages. The method used in this research was descriptive qualitative, with the data collection techniques employed were direct observation and interviews. Meanwhile, the research location is four MAN in Jakarta and Tangerang area, including. The four madrasahs that became the research locations were MAN Insan Cendekia Serpong (South Tangerang), MAN 1 Tangerang, MAN 4 Jakarta, and MAN 13 Jakarta. The researcher conducted interviews with school parties, namely teachers and principals. The results showed that three madrasahs have well-managed e-learning systems. In this case, they are MAN IC Serpong, MAN 1 Tangerang, and MAN 4 Jakarta. The e-learning system used by each madrasah is E-Learning Madrasah which can be accessed using the web and applications from Play Store. Meanwhile, MAN 13 Jakarta still needs to have its e-learning system and use standard features such as zoom, G-meet, etc. Basically. Madrasahs such as MAN IC Serpong, MAN 4 Jakarta, and MAN 1 Tangerang have registered to utilize the digital learning platform with all the features provided. Meanwhile, MAN 13 Jakarta has yet to register, so it cannot utilize the features contained in the digital learning platform. This research implies that madrasahs have innovated well in digital learning implementation so that learning during the pandemic can run well and smoothly. This research further contributes theoretically and practically to the world of education, especially for madrasas regarded as "second-class" schools. In general, this research contributes to the development of the world of digital learning by providing a valuable platform through the various features provided
Mitigation of Environmental Damage Through Natural Resources Management Contracts (Eco-Contract Perspective)
Authors: Firmanda Hengki , Hibatul wafi Mahmud , Syahrin M. Alpi
Published: June 2023

Environmental damage by extractive activities is caused by the formulation of policies that have not placed nature and the environment as legal subjects. Policy formulation in the form of a contract of work tends to accommodate human interests and is profit-oriented. This study aims to examine strategies for mitigating environmental damage caused by PT Freeport’s mining activities based on an eco-contract perspective. PT Freeport’s contract of work is the object of analysis in this research, while data on environmental damage are obtained from national media. Theoretical-reflective approach is used in analyzing the data to formulate mitigation strategies. The results showed that the mitigation of environmental damage in the eco-contract perspective emphasizes the natural relationships and interactions between all components of the ecosystem. In other words, mitigation of environmental damage requires equal treatment between the environment and humans which also indicates equal rights. In fact, force majeure conditions and natural disasters are still viewed from a human perspective, so that efforts to identify and socialize environmental damage only focus on human aspects rather than nature and the environment. PT Freeport’s contract of work has not accommodated mitigation efforts of environmental damage that ecologically oriented. In addition, the weak mapping, control, and socialization of PT Freeport’s mining activities have implications for the lack of efforts to mitigate environmental damage.
Study of Contract Change Order (CCO) on Implementation Time in Building Construction Project
Authors: Kamaludin Tutang Muhtar , Rusdin Andi , Nirmalawati Nirmalawati
Published: June 2023

The aim of this research is to identify the main causes and effects of CCO in the construction of the Palu State Islamic University (IAIN) campus II building project for the Faculty of Tarbiyah and Teacher Training and the Faculty of Sharia and Islamic Economics Lecture Building. Tasks included conducting a field survey via a questionnaire and interviews with main parties; project owner, contractors and consultants who are directly related to the project. It was determined that the top three causes of CCO from project owner, contractor and consultant. The contractor has do CCO at the beginning of the project of 70% respondent, while consultant has changed contract order at mid-project implementation of 50% respondents and 70% at the end project implementation from the contractor. The results that are quite important from this study are the discovery of volume estimation errors and changes in work methods. Errors in estimating volumes are caused by the planning consultant's inaccuracy in planning so that there is a significant difference in volume from the initial contract with conditions in the field so that some work items experience an increase or decrease in volume
Twitter Data Analysis and Text Normalization in Collecting Standard Word
Authors: Lubis Arif Ridho , Nasution Mahyuddin K M
Published: June 2023

is one of the most important data sources in social data analysis. However, the text contained on Twitter is often unstructured, resulting in difficulties in collecting standard words. Therefore, in this research, we analyze Twitter data and normalize text to produce standard words that can be used in social data analysis. The purpose of this research is to improve the quality of data collection on standard words on social media from Twitter and facilitate the analysis of social data that is more accurate and valid. The method used is natural language processing techniques using classification algorithms and text normalization techniques. The result of this study is a set of standard words that can be used for social data analysis with a total of 11430 words, then 4075 words with structural or formal words and 7355 informal words. Informal words are corrected by trusted sources to create a corpus of formal and informal words obtained from social media tweet data @fullSenyum. The contribution to this research is that the method developed can improve the quality of social data collection from Twitter by ensuring the words used are standard and accurate and the text normalization method used in this study can be used as a reference for text normalization in other social data, thus facilitating collection. and better-quality social data analysis. This research can assist researchers or practitioners in understanding natural language processing techniques and their application in social data analysis. This research is expected to assist in collecting social data more effectively and efficiently.
Impact of the Covid-19 Pandemic on Micro Finance Income
Authors: E. P. Apriatni , Ngatno Ngatno
Published: June 2023

The purpose of this study was to examine the impact of the COVID-19 pandemic on the income of microfinance institutions (MFIs) in Indonesia. Using a sample of 181 microfinance institutions using financial report data for 2017–2019 (before the pandemic) and 2020–2021 (during the pandemic). Data were analyzed using a non-parametric test (Wilcoxon signed ranks test). The results show that all elements of income (interest income, fee, and commission income, operating income, and non-operational income) decreased significantly. On the other side of the impact of the COVID-19 pandemic on expenses, several elements of expenses have decreased significantly (interest expense, depreciation, and amortization expense, marketing expense, administration, and general expense, operational expense, and non-operational expense). As for fee and commission expenses, research and development expenses, and an impairment charge on loans, they decrease insignificantly.
Determination of Flame Plume Characteristics utilising CFD and Experimental Approaches
Authors: Al-Khalidy Neihad Hussen
Published: June 2023

The potential for plumes to affect the safety of aircraft operations is often predicted using MITRE EPA Models. For many projects, key input parameters to MITER EPA are not available and conservative assumptions or models such as OHIO model are used to characterize the combustion and approximate the key input parameters to EPA plume rise model. These assumptions and conservative models lead to inaccurate results of simulations. The current study provides a novel approach to use a combination of Computational Fluid Dynamics (CFD) tool and EPA Models to reliably predict the risk of turbulence and upset being encountered by a range of aircraft types that operate through a rising plume. The main objective of the current study is to develop a Computational Fluid Dynamics (CFD) combustion model and a procedure to determine an improved set of flare inputs for the Air Quality (AQ) and MITER EPA models. A CFD model has been developed to determine flame plume characteristics (Effective Height, Effective Diameter, Temperature and Velocity) from two flare stacks which are part of a trailer-mounted Mobile Purge Burner (MPB) system. A subsequent experimental test of a similar trailer-mounted MPB system has validated the CFD results. Plume temperatures within the combustion zone of the flares were very much in line with the temperatures predicted by the CFD Simulation study. Plume temperatures above the MPB System appear to drop very quickly, such that the plume temperature fell from just under 500°C at 5 m above ground level to around 15-16°C (and close to the ambient temperature) at 22 m above ground. Again, this is consistent with the CFD Study results. The CFD simulations in the current study accounted for the turbulent flow with chemical species mixing and reaction and utilised an advanced radiation model to solve participating radiation in the combusted zones. This study assesses all the parameters that have impact on the accuracy of the numerical model including computational domain, mesh distribution, numerical scheme and flame plume characteristics including ambient conditions (wind speed and temperature) and combustion under various air to fuel ratio scenarios.
The Research Developments and Trend of Municipal Bonds: A Bibliometric Analysis
Authors: Hutahayan Benny , Fadli Moh. , Amiputra Satria , Dewantara Reka
Published: June 2023

This study aims to explore and analyze the development and trend of the topic of municipal bonds in the fields of economics and business. Research data using peer-reviewed journals, as many as 478 journals sourced from the Scopus database. Data analysis used a bibliometric approach. Bibliometric analysis utilizing the help of R-biblioshiny and VOSviewer. The research results show an interesting trend of this research from various indicators based on the frequencies and citations of the publications. More importantly, some popular research areas and topics have been uncovered to analyze municipal bonds, which serve as useful inferences for future studies in Indonesia. There are many studies on municipal bonds, but there are still few studies that map the topic of municipal bonds with a bibliometric approach with the help of R-Biblioshiny and VOSviewer to get meaningful and valuable results. That is the novelty of this research.
Kan man heta Pirkko och kalla sig svensk?
Authors: Kuczynski Anna-Liisa
Published: June 2023

Recension av: Ågren, Marja 2006: "Är du finsk, eller...". En etnologisk studie om att växa upp och leva med finsk bakgrund i Sverige. Göteborg: Bokförlaget Arkipelag. 297s.
Släktens historier
Authors: Hellman Katja
Published: June 2023

Recension av: Latvala, Pauliina 2005: Katse menneisyyteen. Folkloristinen tutkimus suvun muistitiedosta. Helsinki: Suomen Kirjallisuuden Seura. 311 s.
PERSPEKTIF NEGARA BERKEMBANG PADA HAK KEKAYAAN INTELEKTUAL DAN TRANSFER TEKNOLOGI
Authors: Santyaningtyas Ayu Citra
Published: June 2023

The exploitation of the use of technological knowledge is at the heart of the development process. Developing countries usually acquire knowledge from developed countries rather than creating it themselves. The process of acquiring knowledge and technology is carried out by means of technology transfer, namely by transferring patents for certain products. In this paper the author will explain the meaning of technology transfer and its various types. It also addresses situations where there is a loss of confidentiality and elaborates on the effect this has on the obligations of parties to contracts in various jurisdictions. This article uses sociological juridical research methods and in this article also tries to deal with various intellectual property issues involved in technology transfer and tries to analyze things from the perspective of developing countries.
Varying severity COVID-19 effects on the blood indicators of insulin-like growth factors family in patients with nonsmall cell lung cancer
Authors: Kit O. I. , Frantsiyants E. M. , Kharagezov D. A , Bandovkina V. A. , Cheryarina N. D. , Pogorelova Yu. A. , Lazutin Yu. N. , Milakin A. G. , Leyman I. A. , Stateshny O. N.
Published: June 2023

Purpose of the study. An analysis of IGF and their carrying proteins levels in blood serum of patients with non‑small cell lung cancer (NSCLC), depending on the severity of the previous COVID-19 infection.

Materials and methods. 60 patients with histologically verified NSCLC T2–3NхM0 receiving treatment at the Thoracic Department (National Medical Research Centre for Oncology, 2020–2021), were included in the study. The control group included 30 NSCLC patients after asymptomatic or mild COVID-19 disease (15 men and 15 women); the main group included 30 (15 men and 15 women) patients after severe or moderate to severe COVID-19. The mean age of patients was 59.11 ± 2.89 years. Blood counts of donors of the same age were used as the norm.

Results. The levels of IGF-I, IGF-II, IGFBP2 and IGFBP3 in the blood serum of patients with NSCLC of the main and control groups were higher than those of donors by an average of 2.5, 2.1, 1.7 and 2.7 times, respectively (p < 0.05). The concentration of IGFBP1 was higher in the control group compared to the main group, and decreased in relation to donors: in the control in men and women by 1.4 and 1.9 times, and in the main group by 3.0 and 6.4 times, respectively (p < 0.05). The ratios of IGF and IGFBP1 increased in both groups: IGF-I/IGFBP1 – in the control group from 3.8 to 4.2 times, and in the main group from 7.9 to 14.4 times; IGF-II/IGFBP1 – in the control from 2.4 to 4.5 times, and in the main group from 6.6 to 12.7 times in men and women, respectively (p < 0.05).

Conclusions. The level of ligands and almost all of the studied carrier proteins, except for IGFBP1, increases in the blood of patients with NSCLC of both sexes, regardless of the severity of COVID-19. The ratio of IGF-I/IGFBP1 and IGF-II/IGFBP1 in the blood increases in both groups, most significantly in the group with severe and moderate COVID-19, which indicates excessive accumulation of IGF levels and may contribute to a more aggressive course of the malignant process.
Levels of biogenic amines in lung tissues of patients with non-small cell lung cancer after COVID-19 of various severity
Authors: Kit O. I , Frantsiyants E. M. , Kharagezov D. A. , Bandovkina V. A. , Pogorelova Yu. A. , Cheryarina N. D. , Lazutin Yu. N. , Milakin A. G. , Leyman I. A. , Stateshny O. N. , Ushakova N. D.
Published: June 2023

Purpose of the study. Was to analyze levels of biogenic amines (serotonin and its metabolite 5-HIAA, dopamine, norepinephrine and histamine) in lung tissues of patients with lung cancer with previous COVID-19 infection.

Patients and methods. The study was carried out on samples of intact lung tissues, tumor tissues and peritumoral lung tissues obtained during open biopsy while performing radical surgery from patients with morphologically verified non-small cell lung cancer (NSCLC), stage I–IIIA (cT1–3NХM0). The main group included 30 NSCLC patients (15 men and 15 women) after severe or moderate to severe COVID-19 who required hospitalization. The control group included 15 men and 15 women with NSCLC after asymptomatic or mild SARS-CoV-2 infection. The mean age of patients was 59.11 ± 2.9 years. Levels of dopamine, norepinephrine, serotonin, 5-hydroxyindoleacetic acid (5-HIAA) and histamine were measured by ELISA (IBL, Germany).

Results. All studied lung tissue samples from men and women of the main group, compared to the control group, showed deficiency of catecholamines with their ratio unchanged, and changes in serotonin metabolism to ensure its stable level. Thus, levels of dopamine in samples of patients of the main group were lower on average by 1.3 times, norepinephrine by 1.3–3.3 times, serotonin by 1.6 times, and 5-HIAA by 1.8–4 times. At the same time, sex differences were observed in histamine levels. Regardless of the COVID-19 severity, levels of diamine in women were lower in the resection line tissue by an average of 2.4 times, and in the peritumoral tissue by 1.6 times, compared with men, but there were no sex differences in the tumor tissue. Conclusion. Apparently, changes in the levels of dopamine, norepinephrine, and serotonin in lung tissues could be associated with the severity of SARS-CoV-2 infection. Since dopamine is involved in counteracting the carcinogenic action of the adrenergic system and in the regulation of various immunocompetent cells in the tumor microenvironment, such changes in the biogenic status in the lungs of patients of the main group could lead to a more severe tumor course.
Parameters of free radical oxidation and antioxidant defense in patients with cervical cancer before and after radical surgical treatment
Authors: Popova N. N. , Goroshinskaya I. A. , Shikhlyarova A. I. , Rozenko D. A. , Menshenina A. P. , Ardzha A.  Yu. , Netyvchenko N. V. , Chekmezova S. A.
Published: June 2023

Purpose of the study. To analyse free radical oxidation and antioxidant defense in patients diagnosed with early cervical cancer (CC) before and after radical surgical treatment.

Patients and methods. Levels of diene conjugates, malondialdehyde (MDA), superoxide dismutase (SOD), catalase, glutathione, glutathione- dependent enzymes, vitamins A and E were determined in 74 women under the age of 45 (48 patients those who were at the stage of surgical treatment with a diagnosis of CC at the National Medical Research Center of Oncology in the period 2017–2020 and 26 healthy women).

Results. Patients with early CC showed significant changes in the intensity of lipid peroxidation processes and in antioxidant defense: elevate levels of MDA and diene conjugates, initial decline in the activity of SOD and catalase, low levels of vitamins A and E. These results complete the understanding of the processes occurring in the body of an oncological patient at the initial stage of tumor formation, which does not yet have an obvious clinical manifestation. After total removal of the ovaries, most of the indicators characterizing the enzymatic link of the antioxidant system tend to normalize, while the violation of the content of vitamins E and A (related to the non-enzymatic link of the antioxidant system) worsens.

Conclusions. Desynchronization of free radical oxidation processes with multidirectional changes in oxidation and antioxidation in patients with early CC at the stage of radical surgical treatment should be considered from the position of hormone‑ reducing surgery and a resulting complex of changes in the organs and systems of women with cancer.
Cultivation of cells in alginate drops as a high-performance method of obtaining cell spheroids for bioprinting
Authors: Filippova S. Yu. , Chembarova T. V. , Timofeeva S. V. , Mezhevova I. V. , Gnennaya N. V. , Novikova I. A. , Lapteva T.  O.
Published: June 2023

Purpose of the study. Testing the protocol of obtaining cell spheroids of breast cancer cell cultures for bioprinting by growing in alginate drops.

Materials and methods. Cells of breast cancer cell lines BT-20 and MDA-MB-453 were cultured in DMEM medium supplemented with 10 % FBS. Next, the cells were removed from the plastic using a trypsin-V ersene solution and resuspended in a sterile 2 % alginate solution in DPBS to the concentration of 105 cells/ml. Then the alginate solution with the cells was slowly dripped through a 30G needle into a sterile cooled solution of calcium chloride (100 mM) from a height of 10 cm. After polymerization, alginate drops were washed in DMEM and cultured for two weeks in DMEM with the addition of 10 % FBS at 37 °C and 5.0 % CO2.The spheroids formed in the alginate were photographed on the 3rd, 7th, 10th, and 14th days of cultivation, after which they were removed from the alginate by keeping in 55 mM sodium citrate solution with the addition of 20mM ethylenediaminetetraacetic acid (EDTA) and embedded in paraffin blocks according to the standard method, followed by histological examination.

Results. Cellular spheroids were formed in both cell cultures already on the 3rd day of cultivation. From the 3rd to the 10th day in both cultures, a uniform growth of cell spheroids was observed with a gradual slowdown in the increase in the size of spheroids by the 14th day of cultivation. On the 10th day the proportion of cells that formed clones (more than 500 μm2 in size) was 25.2 % ± 7.1 % (n = 25) in the BT-20 culture and 38.5 % ± 9.9 % (n = 25) in MDA-MB-453 culture. On the 14th day, BT-20 culture was characterized by spheroids varying little in size and shape, with an average area of 1652 ± 175 µm2, having a dense structure with smooth edges. The spheroids in MDA-MB-453 culture turned out to be more loose and easily deformed, their size and shape varied noticeably, the average area of the spheroids was 2785 ± 345 µm2.

Conclusion. The production of spheroids in alginate drops is inferior in speed to the methods of forming cell conglomerates in hanging drops or on microwells, but it surpasses these methods in productivity, which is comparable to the production of spheroids by constant medium stirring on low-adhesive substrates. In addition, the clonal nature of the obtained spheroids leads to an increase in research costs and thus limits their scalability.
New method of modified chemoradiotherapy for cancer of the upper and middle ampullary rectum
Authors: Gevorkyan Yu. A. , Soldatkina N. V. , Chernyak M. N. , Gusareva M. A. , Bondarenko O. K. , Dzhenkova E. A. , Dashkov A. V. , Kolesnikov V. E. , Petrov D. S. , Tolmakh R. E. , Savchenko D. A.
Published: June 2023

The last decade is characterized by significant progress in the treatment of rectal cancer (reduction in the number of relapses to 5–6 % with the use of prolonged radiation therapy) before surgery. The greatest success has been achieved in the treatment of cancer of the lower ampulla of the rectum, when it is possible to develop a complete clinical response of the rectal tumor to chemoradiotherapy. Nevertheless, the requirement issues to improve the results of treatment of cancer of the upper and middle ampullar rectum with an increase in the survival of patients remain. Which makes it relevant to develop new methods, that increase the effectiveness of the treatment of rectal cancer.

The method of modified chemoradiotherapy for cancer of the upper ampulla of the rectum was developed in our study. The method is as follows: at the first stage, one day before the start of radiation therapy, the patient undergoes superselective catheterization of the superior rectal artery through the radial or femoral artery, followed by regional administration of radiomodifying chemotherapy drugs: cisplatin 50 mg and fluorouracil 500 mg. In one day, patients begin to undergo a course of conformal remote large- fraction radiation therapy to the primary focus and metastasis pathways for 5 sessions with a single focal dose of 5 Gy to a total focal dose of 25 Gy using a low-energy linear accelerator. During the entire course of radiation therapy, fluorouracil 500 mg is administered daily intravenously for 30 minutes in 30 minutes before the session. Surgical intervention with the sampling of material for research is carried out 6–8 weeks after the radiation therapy is completed. To assess the effectiveness of the modified chemoradiotherapy, the stage of tumor regression was determined according to the RECIST scale, and the level of therapeutic pathomorphology of the tumor according to Dworak was determined during a morphological study of the rectal tumor removed during the operation.

The developed method of modified chemoradiotherapy makes it possible to achieve regression of the rectal tumor in a short time, reduce the time and increase the effectiveness of treatment. The method of modified chemoradiotherapy is intended for patients with cancer of the upper and middle ampullar rectum T3-4N0-2M0, for whom radiation therapy is indicated as the first stage of treatment, after which resection of the rectum is performed in a standard volume.
Diagnóstico temprano y tratamiento de hipotiroidismo congénito
Authors: Cayambe Quilligana Jennifer Marisol , Mejía Ortiz Ruth Aurelia
Published: June 2023

El hipotiroidismo congénito es la patología endocrina más frecuente que se presenta en el periodo perinatal que puede causar retraso mental debido a un déficit de hormonas tiroideas. De acuerdo a la localización puede ser primaria, secundaria o central. El objetivo de esta actualización es describir la importancia del diagnóstico y tratamiento temprano del hipotiroidismo congénito que permitirá un neurodesarrollo normal en el paciente pediátrico. Solo del 5 al 10 % de los recién nacidos presentan manifestaciones clínicas al momento del nacimiento, por lo que la realización de una adecuada historia clínica, identificación de factores de riesgo como hipotiroidismo familiar y la realización del tamizaje neonatal es muy importante para su evaluación. En nuestro país desde el año 2011 se ha implementado este programa permitiendo un diagnóstico oportuno y el inicio temprano del tratamiento con levotiroxina para evitar los daños irreversibles producidos por esta patología logrando un excelente pronostico. El seguimiento se debe realizar de manera subsecuente hasta que el paciente llegue a la vida adulta.
Aprendizaje de cuentos y canciones infantiles como estrategia didáctica para mejorar el lenguaje literario en niños de nivel inicial
Authors: Pullaguari Uchuari Bélgica Lucía , Sanmartín González María Ruth , Curipoma Silva Gloria Esperanza , Bermeo Sinchi Janneth Esperanza
Published: June 2023

El presente trabajo de investigación tuvo como propósito analizar los niveles alcanzados por las variables Aprendizaje de cuentos y canciones infantiles y el perfeccionamiento del lenguaje literario, los cuales fueron analizados a partir de la recolección de información secundaria con el uso del modelo PRISMA, en el cual se pudo al encontrar 529 documentos al inicio y finalizó con 85 documentos, lo que arrojó que la característica más trascendental en el uso de los cuentos y canciones infantiles es el ritmo con un 45% y para la segunda variable fue un 49% a nivel informativo. Concluyendo que los docentes utilizan estas estrategias en base a las necesidades de los estudiantes.