bluuebunny/crossref_metadata_2025 huggingface dataset:
Model of radar station functioning in energy potential instability conditions
Authors: Pankov B.B. , Smirnov E.E. , Vorona S.G.
Published: November 2021

The energy potential of the radar is evaluated at the stage of testing when accompanied by reference spacecraft-calibration spheres. At the same time, special attention is paid to the readiness and serviceability of the radar equipment for conducting measurements and providing tests with high-precision data on the position in space and the effective scattering area (ESA) of the reference spacecraft. However, during the normal operation of the radar, it is often not possible to provide such conditions – the state of the radar equipment during measurements is constantly changing, and the limited number of calibration spheres in orbit does not allow measurements to be carried out with sufficient frequency. At the same time, in the radar field of view, there are constantly associated spacecraft for various purposes, measurements of the trajectory parameters of which can be used to assess the energy potential of the radar in real time. When making such measurements, it is necessary to take into account the actual state of the radar equipment and the fluctuations of the signal reflected from the spacecraft of complex shape. The presented model describes the factors that affect the instability of the energy potential during the operation of the radar in real operating conditions when accompanied by associated spacecraft, and allows us to identify the most significant of them. Currently, there are radar models that take into account the features of tracking space objects when changing the conditions for the propagation of electromagnetic waves in space, maneuvering targets, when observing targets against the background of interference, and others. At the same time, the combination of changes in the energy parameters of the radar and the reflected signal in these models was not fully considered. The need to create a model for the operation of a radar station in conditions of instability of the energy potential is also due to the development of technologies for creating small-sized spacecraft, the main distinguishing feature of which is the low radar visibility for stations in the decimeter range. As the ESA decreases, the power of the signal received by the antenna decreases, which increases the relative measurement error and increases the probability of a false target miss. Small-sized spacecraft are understood to be spacecraft with linear dimensions of the order of 0,1x0,1x0,1 m. The ESA of such objects varies in the range from a few hundredths to units of square meter σэф = (0,01…4) m2.
Power dividing systems based on a rectangular coaxial line
Authors: Zhuravlev S.A. , Gusev A.L. , Kurbatskii A.S. , Terekhin О.V.
Published: November 2021

L- and S-band phased array antennas are widely used in modern radiolocation systems. Existing power dividers for L- and S-band phased array antennas have several disadvantages. Waveguide based systems are sophisticated and have a large mass. Optical and conventional coaxial line based systems have a large size. Microstrip based systems are compact and have a low mass, but the maximum input power level is quite low. In this paper, the design of microwave devices based on a multilayer rectangular dielectric filled coaxial line is presented and the recommendations on its use in design of multichannel power dividers are given. The paper demonstrates that this type of power divider design results in lower mass, is compact and has high maximum input power level. Thus, multichannel power dividers based on a multilayer rectangular dielectric filled coaxial line are the most suitable for use in modern L- and Sband radiolocation systems.
A prospective study of surgical management of Koch’s abdomen in a tertiary care hospital
Authors: Shukla Archana , Kori Rajpal , Shivhare Rahul , Dhurve Lalit , Gautam Sonveer
Published: November 2021

Background: Tuberculosis is a communicable disease that is a major cause of morbidity and mortality worldwide. Abdominal tuberculosis is the sixth most common form and is associated with serious complications like perforation and stricture formation.Methods: Observational and prospective study conducted in Hamidia Hospital, Bhopal from September 2018 to September 2020 included 122 patients, between the age of 16 to 60 years who underwent surgical management of abdominal tuberculosis.Results: The incidence of abdominal tuberculosis was higher in young age groups mostly belonging to male sex. The most common presentation was of subacute intestinal obstruction. On surgical exploration ileocecal tuberculosis was the most common finding which was managed most commonly by segmental resection with anastomosis followed by adhesiolysis and strictureplasty. Post-operative wound infection was the most common complication followed by pulmonary complication which was the most common cause of death.Conclusions: Early diagnosis of abdominal tuberculosis with the help of newer diagnostic tools and early referral to higher centers is necessary to decrease the morbidity and mortality. Early start of anti-tubercular drug therapy along with surgical management can help us reduce the mortality and long-term complications associated with abdominal tuberculosis.
Analysis of risk-factors associated with diarrhea prevalence among underfive children in Galkayo District Puntland State, Somalia
Authors: Isack Mustaf A. , Nyamai Juma J. , Kerochi Atei
Published: November 2021

Background: The study analysed risk factors associated with diarrhea prevalence among underfive children in Galkayo District Puntland State, Somalia.Methods: The study used analytical cross-sectional survey conducted in Galkayo, from February to March 2020. The inclusion criteria were caregivers with underfive children, and exclusion criteria were children over five years, caregivers who have no underfive children and children with chronic diarrhea. Sample of 385 was calculated using Yamane formula. Caregivers were randomly selected using simple random sampling after cluster sampling. The researcher administered structured questionnaires, collected data from eligible caregivers using interview guide and elicited on diarrhea perceptions. Quantitative data was analysed using SPSS, qualitative data was identified common and sub-themes.Results: The study found diarrhea was affecting 30% of underfive children. The presence of two under-fives in the household was associated with high diarrhea prevalence [OR=1.93, 95% CI= (1.21, 3.08)]. Low educational level of underfive caregivers were associated with high diarrhea occurrence [OR=1.36, 95% CI= (0.68, 2.66)]. Households headed by non-biological mothers, diarrhea prevalence was high [OR=0.06, 95% CI= (0.00, 0.50) and OR=0.17, 95% CI= (0.03, 0.79)] respectively. Those children under the care of employed caregivers, diarrhea occurrence was high [OR=2.41 (0.99, 5.80)]. Poor personal hygiene (32%), sanitation (28%), and water quality (28%) were attributed to the cause of diarrhea among children.Conclusions: The study recommends, practice of child spacing, improve caregivers’ basic education to better understand risk factors and seek treatment, establish routine water quality surveillance at source and at household level, conduct awareness behaviour change by promotion of handwashing.
Osteosarcoma: A review
Authors: Nerkar A.G.
Published: November 2021

Osteosarcoma (OS) is a type of cancer with onset in late childhood and peak at early adolescence. OS is a typically is chemo sensitive cancer. The treatment modalities include neo-adjuvant and adjuvant therapies with definitive surgery. Permutations and combinations of chemotherapeutics agents have been used. However, in many clinical trial high dose methotrexate has been used as main drug with cisplatin and doxorubicin (MAP). In recent years, case studies have cited addition of fourth drug to the three drug regimen gives a detail of drug regimen being used over past years and discusses the successful treatment.
Head and neck cancer treatment: An overview
Authors: Nerkar A.G.
Published: November 2021

The advance head and neck cancers are most difficult for treatment. The newer approaches for the treatment being systemic chemotherapy combined with radiotherapy. Chemotherapy offers several advantages in metastatic head and neck cancers. The main choice for the systemic chemotherapy being platinum containing compounds (drugs), Taxanes, in recent years have shown to be promising and being included in the neo-adjuvant and concomitant therapy regimes. Further, targeted agents such as epidermal growth factor receptor inhibitors (EGFRIs) have proven to be beneficial in concomitant and metastatic therapies.
Estructura de tallas, crecimiento y tasa de explotación de Potamorhina altamazonica (Characiformes: Curimatidae) en el río Ucayali (Perú)
Authors: Flores-Gomez Stive , Riofrío-Quijandría José , Salazar-Ramírez Lilia , Zavaleta-Flores Javier
Published: November 2021

La llambina (Potamorhina altamazonica) es un recurso importante en la pesquería comercial de la región de Ucayali (Perú). En dicho contexto, el presente estudio se fijó como objetivo determinar su estructura de tallas, parámetros de crecimiento y tasa de explotación en el río Ucayali. Se analizaron las muestras tomadas de las capturas de pesca comercial en Pucallpa, ciudad donde se concentra la mayor flota pesquera de esta región. Los resultados se basan en ejemplares muestreados entre enero del 2008 y diciembre del 2012. Se determinó que la talla media de captura fue menor en la región de Ucayali que en la de Loreto, lo que evidencia una mayor presión de la pesca de este recurso en la primera. Los parámetros de crecimiento estimados para sexos combinados fueron L∞=31,45 cm y K=0,37 año-1. Mediante la función de von Bertalanffy se describió satisfactoriamente el crecimiento determinado a partir del análisis electrónico de la frecuencia de longitudes; se observó que la especie creció rápidamente durante el primer año, lo que le permitiría alcanzar una longevidad de 8,1 años en teoría. La tasa de mortalidad total (Z) estimada fue relativamente alta (1,69 año-1), en tanto que la de explotación, considerando el coeficiente de mortalidad natural (M=0,90 año-1) y de mortalidad por pesca (F=0,79 año-1), fue de 0,47 año-1, lo que indica que el recurso se encontraba próximo al nivel óptimo de explotación (E=0,5).
RECENT TRENDS IN THE DEVELOPMENT OF SENSORS FOR PRE-EXPLOSIVE CONCENTRATIONS OF FLAMMABLE GASES AND VAPORS OF FLAMMABLE LIQUIDS (REVIEW)
Authors:   Moscow Aviation Institute (National Research University), Russian Federation, Baranov A. M. , Osipova T.V.
Published: November 2021

This paper presents a review of current trends in the development of manufacturing technologies of sensors of pre-explosive concentrations of flammable gases and vapors of flammable liquids. Various types of gas sensors are discussed, including catalytic, semiconductor, and optical sensor types, and the principles of their operation. The advantages and disadvantages of each type of gas sensor are highlighted. New and traditional technologies for manufacturing sensitive elements that improve sensor parameters such as processability, miniaturization and reduce energy consumption are discussed. In conclusion, this article suggests future trends and prospects for development and research to improve the sensitivity and selectivity of sensors.
CHARACTERISTICS OF A GRIDLESS TWO-DIAPHRAGM ION GATE AT ATMOSPHERIC PRESSURE
Authors:   Institute for Analytical Instrumentation of RAS, Saint Petersburg, Russia, Kurnin I. V. , Krasnov N. V. ,   Institute for Analytical Instrumentation of RAS, Saint Petersburg, Russia, Arseniev A. N. ,   Institute for Analytical Instrumentation of RAS, Saint Petersburg, Russia, Cherepanov A. G. ,   St. Petersburg Polytechnic University of Peter the Great, Russia, Krasnov M. N. ,   Device Consulting Ltd, Saint Petersburg, Russia, Podolskaya E. P. ,   Institute for Analytical Instrumentation of RAS, Saint Petersburg, Russia
Published: November 2021

As an ion gate for the formation of a short ion pulse in an ion mobility spectrometer, a gridless design with two coaxial diaphragms is proposed. It has been experimentally shown that, depending on the geometric and electrical parameters of this shutter, there is an optimal duration of the electric pulse opening the gate, which provide the maximum amplitude of the ion pulse.
Sick Leave Characteristics Among Nurses of a Referral Hospital During COVID-19 Pandemic
Authors: Najafi Arezu , Sadeghniiat Haghighi Khosro , Mohammadnejad Esmaeil , Dehghan Manshadi Seyed Ali , Izadi Nazanin
Published: November 2021

Hospital-related infections have been widely reported during the Covid-19 outbreak that exposes healthcare professionals to at greater risk of infection. This cross-sectional study was designed to evaluate the frequency of absenteeism in hospital staff during the first and second months of the Covid-19 pandemic, from 26 February until 19 April 2020. Occupational data and sickness absenteeism characteristics were collected from the records of the nursing management department. 304 (17.8%) had sick leave due to coronavirus or corona-like symptoms. Nurses and then nursing aid workers constituted the categories with more frequency of sick leave. The more median days of sick leave were observed among supervisors and midwives. About 80% of participants had typical symptoms of Coronavirus. In conclusion, the median days of sick leave due to coronavirus were not as high as we thought. This could be due to human resource shortage and insufficient knowledge regarding return-to-work guidelines in the early phase of this pandemic.
Cardiovascular Events in People With Type 2 Diabetes: Performance of Framingham, UKPDS, and ADVANCE Risk Equations
Authors: Yaghoubvand Elaheh , Aghili Rokhsareh , Khajavi Alireza , Khamseh Mohammad Ebrahim
Published: November 2021

The aim of this study was to assess the performance of the Framingham, UK Prospective Diabetes Study (UKPDS), and the Action in Diabetes and Vascular disease: Preterax and Diamicron-MR Controlled Evaluation (ADVANCE) risk equations in the prediction of 4-year cardiovascular disease CVD) in Iranian people with type 2 diabetes. The 4-year risks of CVD were estimated using the three equations in a community of 557 patients with type 2 diabetes and free of CVD at baseline. A trained physician evaluated all of the participants regarding the occurrence of CVD events during follow-up. CVD was defined as major events including fatal/non-fatal myocardial infarction as well as fatal/non-fatal stroke, minor events including treated coronary heart disease (CHD), and established peripheral arterial disease (PAD). During four years of follow-up, 64 CVD events were observed (66% minor CVD events). Despite having a good calibration (estimated to observed ratio ranging from 91.37 to 98.2 percent, Hosmer–Lemeshow χ2 (HLχ2) values <15), both general (Framingham) and diabetes-specific (UKPDS and ADVANCE) equations did not have adequate discriminative ability (Area Under the Curve (AUC) ranging from 0.48 to 0.56). Framingham, UKPDS, and ADVANCE risk equations, regardless of being general or diabetes-specific, could not precisely predict 4-year risk of CVD in Iranian individuals with type 2 diabetes.
The Effect of The Shape of Magnetic Field on the Viability of Endothelial Cells
Authors: Mahna Akram , Solali Saeed , Akbarbeiglou Fateme
Published: November 2021

Purpose: Magnetic field is one of the effective and non-invasive modalities on biology and angiogenesis. Studies on the effects of magnetic fields on angiogenesis showed that the shape of the magnetic field could potentially affect angiogenesis. Therefore, this study aimed to control the frequency, intensity, and duration of exposure of magnetic field while investigating the effect of the shape of the magnetic field on the viability of Human Umbilical Vein Endothelial Cells (HUVECs).
Materials and Methods: The HUVECs were exposed to various shapes of 50 and 60 Hz magnetic fields with intensities of 0.5 and 1 mT in acute and chronic exposure regimes. The viability of HUVECs was assessed via MTT assay.
Results: Results showed that the sin type 50 and 60 Hz magnetic fields are more effective in decreasing the viability. The rectified 100 and 120 Hz with 1 and 0.5 mT could increase and decrease the viability compared with 50 and 60 Hz, respectively.
Conclusion: It can be concluded that the shape of the magnetic field can be an effective factor in biology and must be controlled to have a reliable response.
ОЦЕНКА ОПАСНЫХ ИНЖЕНЕРНО-ГЕОЛОГИЧЕСКИХ И ГИДРОГЕОЛОГИЧЕСКИХ ПРОЦЕССОВ НА ТЕРРИТОРИИ ГОРОДА АЛМАТЫ
Authors: Zhakyp Altynay E. , Mirlas Vladimir M. , Auelkhan Yergali S.
Published: November 2021

Ссылка для цитирования:  Жакып А.Е.,  Мирлас В.М.,  Ауелхан Е.C. Оценка опасных инженерно-геологических и гидрогеологических процессов на территории города Алматы /  // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2021. – Т. 332. – № 10. – С. 45–56.

Актуальность исследования обусловлена необходимостью изучения опасных инженерно-геологических и гидрогеологических процессов, развивающихся на территории г. Алматы, представляющих угрозу жизнедеятельности населения, промышленному и гражданскому строительству, а также необходимостью оценки влияния хозяйственной деятельности человека на компоненты геологической среды. Цель: описание и районирование территории алматинской агломерации по опасным геологическим процессам для выбора наиболее характерных участков для их детального изучения; обоснование выбора экспериментального участка для создания геофильтрационной модели, оценки развития процесса подтопления зданий и сооружений данной территории. Объекты: оползни, обвалы, селевые явления, развивающиеся в предгорных районах; подъем уровня подземных вод в центральной части города на участках действующих водозаборов и подтопление отдельных районов в северной части города. Методы: исследование и классификация развивающихся опасных геологических процессов в г. Алматы, систематизация и анализ основных факторов их возникновения и развития на территории по результатам ранее проведенных полевых исследований и опубликованных работ; полевые исследования и картографирование выбранного экспериментального участка; создание базы данных, включающей климатические, геологические, гидрологические, гидрогеологические данные; маршрутное обследование площадки, контроль уровня грунтовых вод в наблюдательных скважинах; наблюдение за состоянием речного стока и паводковыми явлениями. Результаты. На территории алматинской городской агломерации выделено три основные группы опасных геологических процессов, приуроченных к определенным районам: 1 – оползни, обвалы, селевые явления, развивающиеся в предгорных районах города; 2 – подъем уровня подземных вод в центральной части города на участках действующих водозаборов; 3 – подтопление отдельных районов в северной части города. Подтопление участков в северной части города Алматы происходит вследствие уменьшения естественной дренированности территории за счет засыпки и планировки существующих понижений в рельефе и речек «карасу». Оценка потенциальной подтопляемости территории позволила отнести данную территорию к первой степени по потенциальной подтопляемости. При этом расчетный срок подтопления территории составит от 4 до 5 лет. Учитывая динамику процесса подтопления территории в северной части города, возникает необходимость создания геофильтрационной модели для прогнозной оценки развития процесса подтопления зданий и сооружений данной территории.
УТИЛИЗАЦИЯ РАЗНОРОДНЫХ НЕФТЯНЫХ ГАЗОВ В УНИВЕРСАЛЬНОЙ МАЛОЭМИССИОННОЙ ГАЗОТУРБИННОЙ УСТАНОВКЕ С ВНЕШНИМ ПОДОГРЕВОМ ТОПЛИВНОГО ГАЗА
Authors: Shilova Alena A. , Bachev Nikolay L.
Published: November 2021

Ссылка для цитирования:  Шилова А.А., Бачев Н.Л. Утилизация разнородных нефтяных газов в универсальной малоэмиссионной газотурбинной установке с внешним подогревом топливного газа // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2021. – Т. 332. – № 10. – С. 95–104.

Актуальность исследования обусловлена необходимостью создания отечественных газотурбинных энергоустановок с универсальной малоэмиссинной камерой сгорания для утилизации нефтяных газов с различным содержанием балластирующих компонентов. В последнее время предложены и исследуются различные способы снижения эмиссии вредных веществ в газотурбинных двигателях (гомогенное горение, впрыск воды или пара, диффузионное горение по схеме «богатое горение – резкое разбавление – бедное горение» (RQQL) и т.д.). В данной работе предлагается и исследуется вариант низкотемпературного и малоэмиссионного горения с внешним подогревом нефтяного газа перед его подачей в утилизационную камеру сгорания. Цель: разработать термодинамические модели определения режимных параметров утилизационной энергоустановки с подогревателем топливного газа в ее составе и выявить влияние степени забалластированности нефтяного газа на коэффициенты избытка воздуха и расходные характеристики в камере сгорания для мощностного ряда энергоустановок. Объекты: утилизационная газотурбинная энергоустановка, подогреватель топливного газа, малоэмиссионная камера сгорания. Методы: термодинамическое моделирование утилизационной газотурбинной установки с подогревом нефтяного газа перед его подачей в камеру сгорания и термодинамический расчет параметров низкотемпературного малоэмиссионного горения обедненной газо-воздушной смеси. Результаты.Получены режимные параметры утилизационной газотурбинной установки и подогревателя топливного газа в ее составе. Для нефтяных газов с различным содержанием балластирующих компонентов определены минимальные температуры подогрева, при которых возможно устойчивое горение. Определены потребные значения коэффициента избытка воздуха и расходные характеристики для семейства энергоустановок. Даны рекомендации по выбору диаметра камеры сгорания для мощностного ряда утилизационных энергоустановок.
АНАЛИЗ ПОТЕРЬ ЭЛЕКТРОЭНЕРГИИ В СИСТЕМЕ ЭЛЕКТРОСНАБЖЕНИЯ ОБОГАТИТЕЛЬНОЙ ФАБРИКИ
Authors: Klyuev Roman V. , Golik Vladimir I. , Bosikov Igor I. , Gavrina Oksana A.
Published: November 2021

Ссылка для цитирования:  Анализ потерь электроэнергии в системе электроснабжения обогатительной фабрики / Р.В. Клюев, В.И. Голик, И.И. Босиков, О.А. Гаврина // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2021. – Т. 332. – № 10. – С. 7–16.

Актуальность работы обусловлена необходимостью комплексного исследования системы электроснабжения обогатительных фабрик. Для этого следует разработать эффективную методику расчета потерь электроэнергии по отдельным технологическим механизмам и фабрике в целом, что даст возможность существенно сократить энергетическую составляющую затрат в ходе выпуска продукции. Цель: разработать методику определения потерь электроэнергии по отдельным технологическим механизмам в различных режимах работы, которая может быть использована на аналогичных предприятиях. Объекты: горно-обогатительные фабрики, которые характеризуются сложностью определения энергетических характеристик технологического оборудования. Методы: совокупность детерминированных и вероятностно-статистических методов определения потерь электроэнергии. Детерминированные методы включают расчет максимальных потерь, средних нагрузок, графического интегрирования, среднеквадратичного тока. В свою очередь, вероятностно-статистические основаны на исследовании статистических характеристик и применении статистических выборок схем сети. Результаты. На основании экспериментальных исследований разработана методика определения потерь электроэнергии в элементах системы электроснабжения обогатительной фабрики в номинальном и в эксплуатационном режиме. Установлено, что отношение коэффициентов потерь в номинальном и эксплуатационном режимах работы, определяющее степень использования пропускной способности кабельной сети 6 кВ, находится в пределах 1,02–2,57. В среднем кабельная сеть 6 кВ недогружена на 25–30 %. Фактические потери электроэнергии в кабельной сети 6 кВ оказались меньше номинальных и составляют менее 1 % от общей потребляемой электроэнергии, следовательно, проведение каких-либо мероприятий для уменьшения потерь электроэнергии нецелесообразно. Средневзвешенный коэффициент мощности по обогатительной фабрике равен 0,82, поэтому может оказаться целесообразным проведение мероприятий по компенсации реактивной мощности. Расчет параметров компенсирующих устройств и выбор места их установки предусмотрены планом работ на будущий период.
МОНИТОРИНГ АЭРОТЕХНОГЕННОГО ВОЗДЕЙСТВИЯ СЫКТЫВКАРСКОГО ЛЕСОПРОМЫШЛЕННОГО КОМПЛЕКСА
Authors: Vasilevich Maria I. , Kondratenok Boris M. , Ocheretenko Dmitry P. , Vasilevich Roman S. , Gabov Dmitry N. , Lodygin Evgeny D.
Published: November 2021

Ссылка для цитирования:  Мониторинг аэротехногенного воздействия Сыктывкарского лесопромышленного комплекса / М.И. Василевич, Б.М. Кондратёнок, Д.П. Очеретенко, Р.С. Василевич, Д.Н. Габов, Е.Д. Лодыгин // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2021. – Т. 332. – № 10. – С. 33–44.

Актуальность исследования обусловлена необходимостью оценки уровня воздействия крупного целлюлозно-бумажного предприятия, расположенного к северу от г. Сыктывкара, на основе экохимического анализа зимних атмосферных осадков (снега), показать целесообразность применения такого подхода в экологических исследованиях. Цель: показать динамику аэротехногенной нагрузки на территорию вблизи АО «Монди СЛПК» по данным о химическом составе снежного покрова за период мониторинга. Объекты: образцы снежного покрова, отобранные в зоне воздействия предприятия и на условно фоновых территориях. Методы: снегосъемка с использованием трансект на постоянных пунктах отбора проб, применение аналитических методов согласно руководству по контролю загрязнения атмосферы (РД 52.04.186-89), картографические методы оценки распространения загрязнения в снежном покрове с использованием метода интерполяции (метод обратных взвешенных расстояний), применение алгебры карт для расчета площадей зон воздействия. Результаты. Представлены результаты экохимического мониторинга снежного покрова в зоне воздействия выбросов АО «Монди СЛПК» за многолетний период. Дана общая характеристика распределения компонентов выбросов относительно источника эмиссии. Мониторинг снежного покрова в импактной зоне предприятия позволил провести анализ динамики аэротехногенной нагрузки. Результаты расчета поступления веществ на территорию предприятия в 2019 г. показали наиболее низкий уровень загрязнения снежного покрова за весь период наблюдений, 66 % относительно объемов 2002 г. Отмечено снижение поступления загрязнителей, начиная с 2016 г. после реконструкции предприятия. Талая вода за пределами санитарно-защитной зоны не превышала санитарно-гигиенических нормативов. По данным мониторинга снежного покрова показан тренд к снижению аэрогенного воздействия.
ПРИМЕНЕНИЕ МАШИННОГО ОБУЧЕНИЯ ДЛЯ ПРОГНОЗИРОВАНИЯ ПЛАСТОВОГО ДАВЛЕНИЯ ПРИ РАЗРАБОТКЕ НЕФТЯНЫХ МЕСТОРОЖДЕНИЙ
Authors: Martyushev Dmitriy A. , Ponomareva Inna N. , Zakharov Lev A. , Shadrov Timur A.
Published: November 2021

Ссылка для цитирования:  Применение машинного обучения для прогнозирования пластового давления при разработке нефтяных месторождений / Д.А. Мартюшев, И.Н. Пономарева, Л.А. Захаров, Т.А. Шадров // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2021. – Т. 332. – № 10. – С. 140–149.

Актуальность исследования обусловлена тем, что появление искусственного интеллекта в нефтяной промышленности привело к увеличению его использования при разведке, разработке, добыче, проектировании месторождений и планировании управления, чтобы ускорить принятие решений, сократить затраты и время. Машинное обучение приобрело большую популярность в установлении взаимосвязи между сложными нелинейными наборами данных и продемонстрировало свое превосходство над методами регрессии в нефтяной инженерии с точки зрения ошибок прогнозирования данных большой размерности, вычислительной мощности и памяти. В представленной статье рассматривается применение машинного обучения для оценки его эффективности и потенциала для определения и прогнозирования значений пластового давления при разработке нефтяных месторождений по сравнению с обычными статистическими моделями нефтегазовой инженерии. Цель: оценка возможностей расчета и прогнозирования пластового давления методом машинного обучения «случайный лес». Объект: динамика пластового давления при разработке терригенных отложений нефтяных месторождений Пермского края. Методы: методы вероятностно-статистического анализа и машинного обучения «random forest regression» («случайный регрессионный лес»). Результаты. Предлагается новый метод прогнозирования пластового давления с использованием машинного обучения, основанный на непараметрической многомерной модели, связывающей показатели эксплуатации скважины во времени. Предлагаемый метод учитывает динамику показателей, характеризующих эксплуатацию скважин, а прогнозируемое пластовое давление хорошо коррелируется с измеренными с помощью гидродинамических исследований скважин значениями. Установлено, что метод машинного обучения «случайный лес» обеспечивает лучшую достоверность прогнозирования пластового давления, чем метод линейной регрессии. Перспективами дальнейшего развития является дополнительное «обучение» модели «случайного леса» и оценка возможности применения других методов машинного обучения для решения поставленной задачи, в том числе расширение набора факторов для более точного моделирования пластового давления.
Professional pedagogical formation of the competence of the teacher-manager
Authors: Nazira Magzumova , Natalya Mirza , Galiya Zhumasultanova , Karas Kaziyev , Gulbarshyn Belgibayeva
Published: November 2021

Recent studies have considered the practical aspect of professional and pedagogical competence formation of students of pedagogical specialties as future managers of the educational environment. Aim of the research is to develop theoretical foundation, methodology and psychological experimentation of psychological and pedagogical conditions for formation professional competence of managers in educational system. The research methods include description and classification, semantic data interpretation, methods of graphical representation of data, ranking as well as content analysis. The received results can be used in the development of competence of psychological and pedagogical field of knowledge, ability to have an active influence on the development process and self-development of social and valuable characteristics of the personality of future expert of the educational environment.

Key words: Competence; Communicative competence; Pedagogical education; Multilevel training; Teacher-manager.
History of creating curricula, programs and textbooks on foreign language for universities of Kazakhstan
Authors: Aida Nurbayeva , Aliya Ongarbayeva , Mekhirnis Khavaidarova , Feruza Smailova , Gulzhan Kalambayeva
Published: November 2021

Like any private didactics the methodology of teaching foreign languages, has its own history, knowledge of which is necessary for understanding the main stages of development of the theory and practice of teaching, the variety of approaches and methods of teaching foreign languages in the modern world. This study aims to research the history of creating curricula, programs and textbooks on foreign language for universities of Kazakhstan. The research conducted a  Historical and pedagogical analysis which showed that foreign language teaching has its roots in the deep past, and played a huge role in the development of human society, since it determined the progress of the transferring the methodological experience and contributed to the social development of mankind.
Keywords: foreign language;  ideological principles; historical; pedagogical analysis  .
Editorial: The power of collaboration
Authors:   Foundation of Nursing Studies, London, Sanders Kate , Dickson Caroline ,   Queen Margaret University, Edinburgh
Published: November 2021

Since Covid-19 appeared almost two years ago, strategic leaders and academics have offered their wisdom to leaders ‘in the field’ in terms of what worked for them during previous crises. Learning from others’ experiences may be helpful, but the unprecedented nature of the context in which we are living and working has called for innovation, creativity and collaboration, to ‘work things out’. A theme of positivity runs through literature, encouraging leaders to foster hope through being available, listening, responding and showing compassion at a time when there seemed little reason to be positive. Over the difficult period of the pandemic, though, there have been so many stories of close collaborations, person-centred ways of being, helpfulness and kindness, and collaboration is a central theme in this issue of the IPDJ. Over recent months, we have reviewed and refined the aim and scope of the journal, alongside our key stakeholders at the Foundation of Nursing Studies, the International Practice Development Collaborative (IPDC) and the Person-centred Practice International Community of Practice (PCP-ICoP).
Exploring work engagement in the context of person-centred practices: a qualitative study in municipal long-term care facilities for older people
Authors:   University of South-Eastern Norway, Drammen, Norway, Midje Hilde Hovda , Øvergård Kjell Ivar ,   University of South-Eastern Norway, Horten, Norway, Torp Steffen ,   University of South-Eastern Norway, Horten, Norway
Published: November 2021

Background: To provide high-quality and cost-effective person-centred care, organisations need employees who are committed to perform at their best. Employee work engagement, defined as a positive, fulfilling approach to work, is known to correlate favourably with employee wellbeing and performance and with the service climate. Extended understanding about the meaning of work engagement can promote the development of environments that are both conducive to person-centred practices and good places to work. Aim: To explore the meaning of work engagement in the context of person-centred practices in municipal healthcare facilities for older people. Methods: A total of 16 individual interviews were conducted with a purposive sample of registered nurses and nursing assistants working in municipal healthcare facilities for older people in Norway. Data were analysed using a stepwise-deductive-inductive approach. Findings were generated inductively from the themes that emerged in the interviews and were later reflected on in relation to both theory and practice. Findings: Work engagement is manifest at individual and collective levels, involving intrapersonal, interpersonal and social/group components. Engagement is experienced as contributing to employee work capacity and team effectiveness with respect to person-centred processes. Conclusion: At individual, collective and environmental levels, employee engagement facilitates the development of person-centred practices in organisations providing long-term care for older people, to the benefit of residents and staff. Implications for practice: • Work engagement should be recognised as a condition that fosters employees’ ability and willingness to suspend judgment and appreciate the service user’s perspective • Individual-level engagement is contagious, facilitating development of supportive work environments, which, in turn, enables person-centred practices • Engagement should be approached simultaneously as an intrapersonal, interpersonal, and social/group process, with individual- and group-level outcomes
Avaliação do perfil cinético e do equilíbrio de adsorção de Cr(III) pelas sementes de Moringa oleifera aplicadas em sistemas aquosos
Authors: Dos Santos Costa Bruno Elias , Melo Coelho Nivia Maria , Melo Coelho Luciana
Published: November 2021

Os sistemas convencionais de tratamento de água não oferecem uma remediação eficiente frente a contaminação com metais pesados, o que tem estimulado o desenvolvimento de procedimentos alternativos. Neste contexto, sementes de Moringa oleifera foram avaliadas como adsorvente natural para remoção de cromo (III) em soluções aquosas. As condições otimizadas proporcionaram remoção em até 98%, baseado em mecanismo de quimiossorção previsto pela cinética de pseudo-segunda ordem e melhor adequação pela isoterma de Freundlich. Nessas condições, as sementes de Moringa oleífera se tornam uma opção viável para remediação de águas contaminadas com cromo, de forma segura e em concordância com a legislação.
Reatores de Leito Fixo Concorrente e Fluidizado Borbulhante na Gaseificação da Biomassa Quando Utilizados para Geração de Energia Elétrica
Authors: J. Felix Geisllan , Veridiano Hiago , H. Teixeira Pedro , G. Pereira Tiago , J. Dias Márcio
Published: November 2021

Este artigo visou demonstrar e aprofundar o conhecimento na área de gaseificação de biomassa, tendo como objetivo fazer uma revisão de literatura dos reatores fixo concorrente e fluidizado borbulhante, bem como apresentar as vantagens e as desvantagens de suas utilizações em diferentes geradores de potência. O processo de construção do artigo baseou-se em pesquisas literárias utilizando as plataformas Web Of Science, Science Direct, Scielo, LILACS, Scopus, Pubmed, ACM com intuito de buscar artigos, teses e revistas que pesquisaram sobre os temas: biomassa; biomassa por gaseificação; vantagens e desvantagens da utilização dos reatores de leito fixo concorrente e fluidizado borbulhante na gaseificação da biomassa. O reator de leito fixo obteve melhor resultado quando se trata de baixo custo de construção, granulometria do combustível e valores de hidrogênio. O reator de leito fluidizado borbulhante destacou-se quando se trata de menor quantidade de impurezas e baixo teor de alcatrão.
Quantification of Calcium Titanate (CaTiO3) by the Rietvield Method in Different Molar Proportions, from the Rutile Ore
Authors: Gralik Guilherme , Gralik Guilherme
Published: November 2021

O objetivo do presente estudo é produzir titanato de cálcio (CT) com estrutura perovskita (ABO3) a partir do minério rutilo e carbonato de cálcio comercial. As matériasprimas foram caracterizados por fluorescência de raios-X e difração de raios-X (XRD). Diferentes composições foram formuladas, as amostras foram comprimidas a 150 MPa e sinterizadas em forno resistivo em temperaturas de 1300 ° C por 3h. As amostras foram analisadas através de XRD após o processo de sinterização e as fases foram quantificadas de acordo com o método Rietveld. As imagens foram obtidas por meio de microscopia eletrônica de varredura (MEV) a fim de mostrar as características das microestruturas formadas. De acordo com os resultados, a formação do CT depende da razão molar entre os cátions de cálcio e titânio nas composições.
THE INFLUENCE OF COMPENSATION TO EMPLOYEE PERFORMANCE IN FOOD SECURITY AND ANIMAL HUSBANDRY OFFICE
Authors: Harahap Muammar Kadapi
Published: November 2021

Compensation is considered very important tool to increase employee morale in the progress of organization or bureaucracy in a company or institution. By giving any compensation, every employee will have high morale at work. So that the company can achieve the targets that have been set, even more than it should be. Likewise with this study which will look at the effect of compensation on improving employees performance the food security and animal husbandry office in North Sumatra province. Compensation functions as a form of reward received by employees in relation to rewards or for their work performance, both regularly and situational in a company. This research aims to see an effect of compensation in food security and animal husbandry North Sumatra. The process of collecting data in this study uses quantitative methods that are collected based on population and samples at research location. The researcher in this case has determined sample in data collection in accordance with specified problem. As for the population in this study, amounting to 53 people who work in the office for food security and animal husbandry. From the questionnaire given to 53 respondents, each respondent answered 10 questions that had been prepared beforehand. As for this research, it is found that the partial compensation variable has a significant effect on employees performance at Food Security and Animal Husbandry Office of North Sumatra Province. So it can be concluded that compensation is very influential in increasing morale of employee performance and it will have a good impact on activity of food security and animal husbandry in North Sumatra.
PEMENUHAN HAK ATAS PERUMAHAN YANG LAYAK HUNI BAGI KORBAN PENGGUSURAN MEDOKAN SEMAMPIR KOTA SURABAYA BERDASARKAN RIGHT TO THE CITY
Authors: Putri Rizka Elvira , Martanto Ucu
Published: November 2021

Penelitian ini membahas tentang upaya Pemerintah Kota Surabaya dalam memenuhi hak atas perumahan yang layak huni khususnya bagi masyarakat miskin yang terkena dampak dari program Pemerintah Kota Surabaya salah satunya yaitu akibat penggusuran yang berada di Kelurahan Medokan Semampir Kota Surabaya. Fokus penelitian ini adalah untuk mengetahui program-program apa saja serta solusi apa saja yang telah dilakukan oleh Pemerintah Kota Surabaya dalam memenuhi hak atas perumaahan layak untuk masyarakat yang terkena dampak dari penggusuran. Penelitian ini menggunakan teori right to the city dari Henry Levebfre untuk menganalisa pembangunan Kota Surabaya bahwa masyarakat kota memiliki hak atas pembangunan kotanya sendiri. Penelitian ini menggunakan pendekatan kualitatif dengan metode deskriptif analisis untuk menganalisis serta menggambarkan suatu masalah yang ada di lapangan. Pengambilan data didapatkan menggunakan metode purposive sampling dimana penulis sudah menentukan subjek penelitian dengan berdasarkan ciri-ciri khusus yang sesuai dengan permasalahan penelitian. Hasil dari penelitian ini adalah upaya Pemerintah Kota Surabaya dalam memenuhi hak atas perumahan layak huni bagi masyarakat miskin khususnya masyarakat korban dari penggusuran, Kendala Pemerintah Kota Surabaya dalam memenuhi hak atas perumahan layak huni untuk masyarakat miskin Kota Surabaya, Penolakan Warga Medokan atas ganti rugi yang telah ditawarkan oleh Pemerintah Kota Surabaya, Dampak dari adanya kebijakan maupun program Pemerintah Kota Surabaya terhadap pemenuhan perumahan yang layak huni untuk masyarakat miskin. Kesimpulan dari penelitian ini adalah pemenuhan hak atas perumahan layak bagi masyarakat miskin khususnya korban penggusuran Medokan Semampir Kota Surabaya tidak berjalan dengan baik karena pada saat program penggusuran terjadi masyarakat korban dari penggusuran belum ditempatkan pada tempat yang baik.
Feature Selection Approach to Improve Malaria Diagnosis Model for High and Low Endemic Areas of Tanzania
Authors: Mariki Martina , Mduma Neema , Mkoba Elizabeth
Published: November 2021

Malaria remains an important cause of death, especially in sub-Saharan Africa with about 228 million malaria cases worldwide and an estimated 405,000 deaths in 2019. Currently, malaria is diagnosed in the health facility using a microscope (BS) or rapid malaria diagnostic test (MRDT) and with area where these tools are inadequate the presumptive treatment is performed. Apart from that self-diagnosis and treatment is also practiced in some of the households. With the high-rate self-medication on malaria drugs, this study aimed at computing the most significant features using feature selection methods for best prediction of malaria in Tanzania that can be used in developing a machine learning model for malaria diagnosis. A malaria symptoms and clinical diagnosis dataset were extracted from patients’ files from four (4) identified health facilities in the regions of Kilimanjaro and Morogoro. These regions were selected to represent the high endemic areas (Morogoro) and low endemic areas (Kilimanjaro) in the country. The dataset contained 2556 instances and 36 variables. The random forest classifier a tree based was used to select the most important features for malaria prediction. Regional based features were obtained to facilitate accurate prediction. The feature ranking as indicated that fever is universally the most influential feature for predicting malaria followed by general body malaise, vomiting and headache. However, these features are ranked differently across the regional datasets. Subsequently, six predictive models, using important features selected by feature selection method, were used to evaluate the features performance. The features identified complies with malaria diagnosis and treatment guideline provided with WHO and Tanzania Mainland. The compliance is observed so as to produce a prediction model that will fit in the current health care provision system in Tanzania.
Preparing Planarian Cells for High-content Fluorescence Microscopy Using RNA in situ Hybridization and Immunocytochemistry
Authors: Grohme Markus , Frank Olga , Rink Jochen
Published: November 2021

High-content fluorescence microscopy combines the efficiency of high-throughput techniques with the ability to extract quantitative information from biological systems. The planarian community has developed sensitive and robust assays for whole animals, yet cell based assays, despite their practical aspects, have not been explored to the same extent. Here we describe a modular collection of detailed protocols adapted for fixed planarian cells that enable multiplexed measurements of biomarkers in microwell plates. Methods include the detection of RNA transcripts by RNA fluorescent in situ hybridization combined with tyramide signal amplification using hapten-labeled riboprobes. In addition, immunocytochemical protocols for quantifying proliferating cells by the detection of phosphorylated histone H3 as well as 5-bromo-2'-deoxyuridine incorporation into the nuclear genome are described. The assays are compatible with planarians of virtually any size, as the tissue is disaggregated into a single cell suspension before fixation and staining. By sharing many reagents with established planarian whole mount staining protocols, preparation of samples for high-content microscopy adoption requires little additional investment. Recommendations for successful experimental workflows and common sources of errors are discussed.