bluuebunny/crossref_metadata_2025_split huggingface dataset:
МОДЕЛИРОВАНИЕ ПЕРЕДАЧИ АКУСТИЧЕСКОЙ ЭНЕРГИИ ЧЕРЕЗ МНОГОСЛОЙНУЮ СИСТЕМУ ДЛЯ ИЗМЕНЕНИЯ РЕОЛОГИЧЕСКИХ СВОЙСТВ УГЛЕВОДОРОДОВ
Authors: Азин Антон Владимирович , Богданов Евгений Петрович , Рикконен Сергей Владимирович 
Published: March 2023

Ссылка для цитирования: Азин А.В., Богданов Е.П., Рикконен С.В. Моделирование передачи акустической энергии через многослойную систему для изменения реологических свойств углеводородов // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2023. – Т. 334. – № 3. – С. 186-196.
Актуальность исследования обусловлена необходимостью определения уровня акустической энергии ультразвукового излучения, проходящего через многослойную конструкцию. Знание уровня акустической энергии актуально для проектирования ультразвуковых установок по изменению реологических свойств углеводородных топлив при эксплуатации энергетических объектов в условиях Арктики и Антарктики. Цель состоит в разработке математической модели распространения ультразвукового излучения в многослойной системе с определением энергии в каждом слое при учете конструкции ультразвукового излучателя резонансного типа. Объекты: ультразвуковой излучатель резонансного типа, многослойная система, физическая модель системы «ультразвуковой излучатель – многослойная система». Методы: математическое моделирование распространения ультразвукового излучения в многослойной системе, учитывающее влияние: конструкции ультразвукового излучателя резонансного типа, его режима работы, количество слоев и механические свойства материалов многослойной системы; экспериментальные исследования на основе физической модели системы «ультразвуковой излучатель – многослойная система»; верификация математической модели на основе полученных экспериментальных данных. Результаты. Разработанная математическая модель позволяет определить энергию и частотные характеристики акустического излучения в каждом слое многослойной системы. Знание уровня акустической энергии при дальнейших исследованиях позволит определить изменения реологических свойств среды, в том числе и от нагрева. Проведены экспериментальные исследования работы ультразвукового излучателя резонансного типа при нагрузке в виде одного слоя полиметилметакрилата, двух слоев полиметилметакрилата и трех слоев полиметилметакрилата. Расчетные данные согласуются с экспериментами, погрешность не превышает 15 %. Выводы. Разработанная математическая модель позволяет спроектировать конструкцию ультразвукового излучателя резонансного типа и подобрать по мощности и диапазону частот необходимый источник питания для лабораторных исследований углеводородного сырья.
ПРОГНОЗНОЕ МОДЕЛИРОВАНИЕ ГИДРАВЛИЧЕСКОГО РАЗРЫВА ПЛАСТА АЛЮМОСИЛИКАТНЫМИ ПРОПАНТАМИ, ИЗГОТОВЛЕННЫМИ НА ОСНОВЕ БУРОВЫХ ШЛАМОВ
Authors: Третьяк Александр Александрович , Яценко Елена Альфредовна , Доронин Сергей Владимирович , Борисов Константин Андреевич , Кузнецова Алла Витальевна 
Published: March 2023

Ссылка для цитирования: Прогнозное моделирование гидравлического разрыва пласта алюмосиликатными пропантами, изготовленными на основе буровых шламов / А.А. Третьяк, Е.А. Яценко, С.В. Доронин, К.А. Борисов, А.В. Кузнецова // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2023. – Т. 334. – № 3. – С. 165-172.
Актуальность исследования обусловлена вопросами повышения экологической безопасности при проведении буровых работ и поиском возможных путей снижения антропогенной нагрузки на окружающую среду. Одной из причин загрязнения окружающий среды является буровой шлам, представляющий собой смесь выбуренных горных пород и буровых растворов различной степени опасности. Утилизация бурового шлама – сложный и дорогостоящий процесс. Одним из возможных способов переработки бурового шлама является изготовление пропанта с целью последующей закачки его в продуктивный пласт при проведении гидравлического разрыва пласта. Учитывая тенденцию к увеличению доли месторождений с трудноизвлекаемыми запасами в активах нефтегазовых компаний, данное решение является актуальным. Целью проведенного компьютерного моделирования являлось изучение возможности проведения гидравлического разрыва пласта с закачкой алюмосиликатного пропанта, изготовленного из бурового шлама. Объект: изготовленный на основе бурового шлама алюмосиликатный пропант и продуктивный пласт-коллектор. Методы. Выполнены исследования по прогнозному моделированию гидравлического разрыва пласта с закачкой алюмосиликатного пропанта, изготовленного на основе буровых шламов, с применением программного комплекса симулятора гидравлического разрыва пласта «РН-ГРИД». Результаты. Рассмотренные задачи по прогнозному моделированию гидравлического разрыва пласта с применением алюмосиликатного пропанта, изготовленного на основе буровых шламов, открывают перспективу решения экологических проблем утилизациии опасных отходов, образующихся при буровых работах. Анализ характеристик, полученных пропантов и выполненное компьютерное моделирование подтверждают возможность применения данного способа утилизации буровых шламов при использовании на нефтегазовых месторождениях Южного федерального округа.
Pemodelan Akuisisi Data Sistem Monitoring Kualitas Air Budidaya Pembenihan Ikan Kerapu
Authors: Prayoga Deardi Yusuf , Nuralam Nuralam 
Published: March 2023

Kementrian Kelautan dan Perikanan (KKP) menyatakan bahwa pada tahun 2020 Indonesia mengalami kenaikan peringkat menjadi berada di posisi 8 sebagai eksportir utama produk perikanan dunia. Salah satu komoditas produk perikanan yang berkontribusi dalam peningkatan nilai ekspor tersebut adalah ikan kerapu. Menurut Balai Besar Perikanan Budidaya Laut (BBPBL) Lampung menyatakan bahwa perlu dilakukan pemeriksaan kualitas air budidaya ikan secara preventif dengan menerapkan digitalisasi pada pelaksanaannya. Sistem monitoring kualitas air pada kolam pembenihan budidaya ikan kerapu dibuat untuk mempermudah pembudidaya dalam melakukan pemeriksaan berkala terhadap kualitas air yang digunakan dengan parameter yang dimonitor yaitu suhu, derajat keasaman (pH), dan kadar garam (salinitas). Data kualitas air dapat dimonitor untuk membantu melihat tren perubahan serta rekam jejak data sehingga pembudidaya dapat mencegah terjadinya penyakit atau mengetahui penyebab jika terjadinya kematian pada ikan kerapu. Untuk jenis sensor yang digunakan adalah sensor derajat keasaman PH, sensor DSB18B20, dan sensor salinitas electrical conductivity. Hasil keluaran dari semua sensor berupa nilai tegangan, yang akan dibaca oleh ADS1115 yaitu ADC eksternal yang merubah nilai tegangan tersebut ke dalam bentuk satuan bit yang nantinya nilai ini akan dikonversi menjadi nilai pengukuruan yang diinginkan dan ditampilkan melalui LCD TFT-ILI9341 sebagai tampilan monitoring. Hasil kalibrasi sensor PH dan salinitias yang dibandingkan dengan alat ukur referensi memiliki selisih pembacaan yang relatif kecil yaitu ±0.11 untuk sensor PH dan ±0.24 untuk sensor salinitas. Setelah dilakukan pengujian dengan air laut, ketiga sensor memiliki nilai akurasi yang cukup tinggi dengan akurasi untuk sensor suhu sebesar 99.13%, untuk sensor PH sebesar 99.08% dan sensor salinitas sebesar 98.50%.
Pengaruh Pendekatan Kontekstual dengan Strategi Think Talk Write terhadap Kemampuan Pemecahan Masalah Matematis Siswa SMA Negeri 1 Jakarta
Authors: Ahmad Yadih  , Ellis Salsabila  , Tri Murdiyanto  
Published: March 2023

Tujuan dari penelitian ini adalah untuk menguji pengaruh pendekatan kontekstual dengan strategi Think Talk Write (TTW) terhadap kemampuan pemecahan masalah matematis siswa. Metode yang digunakan pada penelitian ini adalah penelitian eksperimen semu dengan post-test only control group design. Teknik pengambilan sampel menggunakan teknik cluster random sampling dan simple random sampling. Sampel penelitian yaitu siswa kelas XI MIPA 5 dan XI MIPA 4 di SMA Negeri 1 Jakarta. Kemampuan pemecahan masalah matematis siswa diukur menggunakan instrumen penelitian yaitu empat soal uraian pada pokok bahasan program linear yang telah valid dan reliabel. Hasil pengujian hipotesis menggunakan uji-t dengan taraf signifikansi , diperoleh bahwa dan sehingga , maka ditolak dan nilai Cohen’s d diperoleh perhitungan sebesar yang termasuk ke dalam kategori Large (besar) dengan presentase sebesar 79%. Berdasarkan hasil perhitungan, dapat disimpulkan terdapat pengaruh positif yang signifikan dari penerapan pendekatan kontekstual dengan strategi think talk write terhadap kemampuan pemecahan masalah matematis siswa kelas XI SMAN 1 Jakarta.
PELATIHAN KETERAMPILAN BERBAHASA INDONESIA BAGI MAHASISWA ASING ALUMNI PROGRAM DARMASISWA UNIVERSITAS NEGERI JAKARTA
Authors: Purbarani Etsa , Muliastuti Liliana , Diyantari  
Published: March 2023

Fakultas Bahasa dan Seni Universitas Negeri Jakarta (FBS-UNJ) sejak 1999 menerima mahasiswa asing belajar bahasa Indonesia sebagai implikasi kerja sama FBS-UNJ dengan perguruan tinggi di Korea Selatan. Selain itu, FBS-UNJ juga menyelenggarakan program Darmasiswa yaitu program bahasa Indonesia bagi penutur asing (BIPA) dengan beasiswa dari Kementerian Pendidikan Kebudayaan, Riset, dan Teknologi. Saat ini lulusan program BIPA Darmasiswa FBS-UNJ telah bekerja di berbagai negara. Di antara mereka ada yang menggunakan bahasa Indonesia sebagai alat komunikasi dalam bekerja. Pelatihan ini dilaksanakan untuk menyegarkan dan meningkatkan keterampilan berbahasa Indonesia mereka setelah beberapa tahun selesai belajar di UNJ. Pelatihan dilaksanakan selama dua minggu secara virtual karena lokasi tinggal para alumni yang berbeda-beda. Materi yang dilatihkan meliputi empat keterampilan berbahasa, yaitu keterampilan menyimak, keterampilan berbicara, keterampilan membaca, serta keterampilan menulis. Materi yang dikembangkan untuk kegiatan ini merupakan materi singkat untuk dua minggu. Semua materi mengacu pada Standar Kompetensi Lulusan (SKL) yang tertuang dalam Permendikbud Nomor 27 tahun 2017. Tugas akhir peserta kegiatan pelatihan ini berupa tulisan dengan tema Pandemi 19. Setelah dianalisis teridentifikasi terjadi peningkatan kemampuan peserta pelatihan dalam kemampuan menulis.
Factors improved clinical outcomes in patients &lt; 38 years with diminished ovarian reserve and low oocyte retrieval: a retrospective study
Authors: Chen Xiao-Jun , Xi Ji , Liu Han , Pan Jiexue , Zhou Cheng-Liang , Jin Li 
Published: March 2023

Abstract
Background: In young patients with Diminished ovarian reserve (DOR), the number of retrieved oocytes limits the success of assisted reproductive technology, but which factors influence the clinical outcome of young DOR patients who already have retrieved few eggs is still unclear.
Methods: We retrospectively analyzed clinical date of 349 young DOR patients (< 38 years old and FSH >10IU/L) with low oocyte retrieval (≤ 5 oocytes).
Results: Total of 18 candidate variables were tested. Seven factors were identified as being significantly different (P < 0.05) between the clinical pregnancy group and the non-clinical pregnancy group. six factors were significantly different between the live-birth group and the non-live birth group. In multivariate analysis, lower antral follicle count (AFC) and estradiol (E2) level on hCG day were independent negative risk factors associated with the outcome of clinical pregnancy, as well as live birth. Lower progesterone (P) on hCG day was associated with a higher rate of clinical pregnancy and live birth.
Conclusions: Our study indicated that AFC, E2 on hCG day, and P on hCG day are prognostic factors for clinical pregnancy and live birth rates in young DOR patients with low oocyte retrieval.
The Effectiveness of Applying the Economic and Technological of the Kingdom of Saudi Arabia's Vision 2030 Dimensions in Achieving the Competitive Advantage of the Hail Region
Authors: Alhamad Samer Hussein Imfadhi , DAKHLI Abdesselem Chedli , Hani Sylvia Ismail Bani , Almahayreh Abdulah salamah 
Published: March 2023

Abstract
The research aims to evaluate the effectiveness of applying the economic and technological dimensions of the Kingdom's Vision 2030 in achieving competitive advantage and its repercussions on the Saudi society-Hail region. The researcher employed a descriptive-analytical approach, and the sample comprised sixty faculty members at Hail University in Hail. The sample size was determined based on the size of the population of the university, the research objectives, and the availability of resources. Therefore, this sample size was considered suitable for obtaining a representative sample of faculty members in the university. A questionnaire was utilized as the instrument for the study, and it was composed of two dimensions: the economic and technological aspects. The economic aspect included the labour market, efficient labour allocation and skills improvement, support for emerging businesses, enabling entrepreneurship opportunities and attractive competitiveness. Technological aspects included administrative operations, human resources, electronic regulation and technical infrastructure. The study concluded that the arithmetic mean values of the economic dimension with its sub-dimensions were high, with a percentage ranging between (68% − 84%). This indicates that the economic dimension had an impact on the competitive advantage. The results of the study also showed that the arithmetic mean values of the technological dimension with its sub-dimensions were high, with a percentage ranging between (68% − 84%). This indicates that technology has had an impact on competitive advantage. The study findings can be used to inform policymakers and businesses in the region to make informed decisions regarding the development of the region's competitive advantage.
Water Quality Analysis of the Thorgren Naturalized Detention Basin
Authors: Aljobeh Zuhdi , Gillman Rick , Ibarra Cruz 
Published: March 2023

Abstract
This paper offers a case study demonstrating an integrated stormwater best management practice for nutrient removal, runoff temperature reduction, suspended solids removal, enhanced hydraulic performance and runoff storage, and improved biological integrity. The study includes data collected from the Thorgren Detention Basin in Valparaiso, Indiana, originally designed as a dry-bottom detention basin and comparison data collected from the redesigned naturalized, wet-bottom, basin. Additional information is presented about the construction, finance, operation, and performance monitoring of the basin. We found a significant stormwater quality improvement due to the implementation of the detention basin naturalization effort.
Parametric identification of the mathematical model of the micro-arc oxidation process
Authors: Pecherskaya Ekaterina , Semenov Anatoliy , Golubkov Pavel , Artamonov Dmitriy , Zhurina Angelina 
Published: March 2023

Abstract
An electrical equivalent circuit for the micro-arc oxidation process, taking into account the resistance of the electrolyte, the resistance of the coating of the part in the form of a parallel connection of a nonlinear active resistance and reactive capacitive resistance is presented. A mathematical model describing the behavior of the electric equivalent circuit of the micro-arc oxidation process is proposed. A procedure for determining the parameters of this model, including the construction of an oscillogram of the cell resistance change and its approximation; evaluation of resistance values and capacitance of the equivalent circuit of a galvanic cell has been developed. A method for calculating the dynamic characteristics of a model of the micro-arc oxidation process is proposed. Based on the identification results, its nonlinear Simulink model is developed. The adequacy of the model is verified by comparing the calculated and experimental voltages and currents of the galvanic cell. The maximum voltage simulation error with respect to Umax does not exceed 7%, the maximum current simulation error with respect to Imax does not exceed 10%. On the basis of experimental measurements of voltages and currents using the developed method of parametric identification, the dependences of the change in model parameters on the oxidation time are obtained. It has been established that the change in the coating resistance of a part depends on the thickness of the coating being built up. The remaining parameters of the equivalent circuit in the process of micro-arc oxidation change insignificantly.
Optimization of image reconstruction and performance evaluation for a small-animal SPECT and PET imaging
Authors: Kanno Takayuki , Onoguchi Masahisa , Shibutani Takayuki , Hiromasa Tomo , Wakabayashi Hiroshi , Kinuya Seigo 
Published: March 2023

Abstract
Objective: In the field of small animal imaging, Versatile emission computed tomography/computed tomography (VECTor/CT) allows for fully simultaneous acquisition with SPECT and PET tracer using a clustered multi-pinhole collimator. We determined optimal image reconstruction parameter settings and assessed performance characteristics for 99mTc and 18F imaging.
Methods: A line source phantom, a cylindrical phantom and a hot-rod phantom containing either 99mTc or 18F were used to perform quantitative analyses including the FWHM, uniformity, contrast and contrast-to-noise ratio and visual analysis. The number of subsets was set as 4, 8, 16 and 32 and the number of iterations was varied from 1 to 30. After the determination of the optimal reconstruction parameters, sensitivity and activity recovery coefficients was measured.
Results: The optimal reconstruction parameters were 32 subsets and 8 iterations for 99mTc and 32 subsets and 17 iterations for 18F. Using optimal parameters, 1.1 mm and 1.3 mm hot-rod phantoms can be distinguished for 99mTc and 18F, respectively. In addition, sensitivity was 3606 cps/MBq for 99mTc and 2052 cps/MBq for 18F. The activity recovery coefficients of 99mTc and 18F were maintained above 1.0 for more than 2 mm diameter rod and more than 3 mm diameter rod, respectively.
Conclusions: We conducted a performance evaluation with 3 phantoms while changing reconstruction parameters to determine optimal settings for 99mTc and 18F. When the optimal reconstruction parameters we found were used, it was able to visually distinguish small hot-rods diameter, compared with generally used parameter settings and then we could evaluate performance characteristics of the VECTor/CT equipped with the collimator newly designed for the size of a rat.
The application of BOPPPS combined Case-Based Learning teaching mode in clinical practice of gastroenterology for eight-year medical program students
Authors: Zhang Zhicheng , Liu Danfei , Luo Xiangyuan , Hu Dian , Wang Yufei , Xia Limin 
Published: March 2023

AbstractBackground To introduce the teaching mode of BOPPPS combined Case-Based Learning in the clinical practice of gastroenterology for eight-year medical program students and to explore its application effect. Methods Forty students of eight-year medical program who were interns in the gastroenterology department at Wuhan Tongji Hospital from July 2022 to November 2022 were selected and divided into 2 groups by random number table method. In the case discussion session of the clinical practice, 20 students in the experimental group received BOPPPS combined Case-Based Learning teaching method, and 20 students in the control group received the traditional teaching method. The excellent rate of knowledge mastery, assessment scores, self-directed learning ability scores, and teaching satisfaction were compared between the two groups. Results The excellent rate of knowledge mastery, assessment scores, and self-directed learning ability of the experimental group were all significantly higher than those of the control group (P < 0.05). Conclusions BOPPPS combined Case-Based Learning teaching mode is applied to the case discussion of eight-year medical program students' clinical practice in gastroenterology, which can effectively improve the knowledge mastery, theoretical performance, and self-directed learning ability of gastroenterology.
Simulation of university industry education integration mobile APP learning platform based on deep learning algorithm
Authors: Li Jianzhong , Wan Qiang 
Published: March 2023

Abstract
The process of modern economic development is getting faster and faster, and the overall economic development of the world has also undergone tremendous changes. The rapid development and wide use of high-tech have provided strong technical support for the industrial reform of industrial types. The new economic development model has changed the industrial structure in the previous development model, and China's economic development pattern has also made great progress relying on intelligent technology. The long-term and stable development of various industries is linked to the quality of talents in each school. The development of the new era has prompted colleges and universities to improve the level and efficiency of talent training. New advanced technologies have also provided greater space for colleges and universities to innovate teaching concepts and teaching methods. This paper takes the deep learning algorithm as the technical background of the mobile software learning platform, uses the theoretical knowledge of the algorithm to explain the implementation process and the significance of the implementation of the concept of industry education integration in colleges and universities, and carries out simulation analysis on the designed APP, providing help for the further popularization of the concept of industry education integration.
Copula Based Joint Flood Frequency Analysis: the Case of Guder River, Upper Blue Nile Basin, Ethiopia
Authors: Haile Mesfin Mamo , Khosa Rakes 
Published: March 2023

AbstractThe study of univariate frequency of hydrological extremes is well established in developing countries such as Ethiopia. However, the design of hydrological and hydraulic systems necessitates a thorough understanding of the flood event's characteristics, such as volumes, peaks, time of occurrence, and duration. The majority of researches use a univariate approach rather than a more realistic approach that acknowledges the multivariate nature of the underlying phenomenology. In addition to the uncertainty involved with the occurrence in both space and time, these events may frequently bear various degrees of association. As a result, the major objective of this study is to address the problem of quantifying flood events in terms of frequency of occurrence utilizing the 'Copula' based bivariate approach to analyze the joint distributions of associated flood variables with a special focus on two Guder River stations in Ethiopia. Using a 'Theory of Runs' based on a set threshold flow value, the concept was applied to flood parameters such as flood peaks and volume. Various bivariate copulas from Archimedean families were used and compared with various statistical and graphical tests. The Clayton and Gumbel-Hougaard copulas were chosen as the best fit for the flood peak and volume for stations 1 and 2, respectively. The chosen copula approach was used to determine the joint cumulative distribution, conditional distribution, and return periods required for hydrologic design. Various primary, secondary, and conditional return durations were computed and compared, and some correlations between them were established.