bluuebunny/crossref_metadata_2025_split huggingface dataset:
ON THE DENSITY OF A SPECIAL CLASS OF LIZORKIN FUNCTIONS IN A WEIGHTED LEBESGUE SPACE $L^{gamma}_p$
Authors: Половинкина М.В. , Рощупкин С.А. 
Published: March 2023

Исследуется класс основных функций $Phi^{+}_{gamma},$ построенный по принципу пространств Лизоркина на основе смешанного преобразования Фурье - Киприянова - Катрахова. Первоначально такие классы функций, построенные на основе смешанного преобразования Фурье Бесселя, исследовались Л. Н. Ляховым. Введенные им пространства не могли учитывать «нечетные» порядки сингулярных производных. Но последние оказались принципиально необходимы в задачах определения фундаментальных решений дифференциальных уравнений (обыкновенных и в частных производных). Интегральное преобразование Киприянова - Катрахова (принадлежит классу преобразований Бесселя) приспособлено для работы с сингулярным дифференциальным операторам типа $D^{2m+k}_Bfrac{partial^k}{partial x^k}B^m_x,$ где k принимает значения 0 или 1, а $B^m_x$ - сингулярный дифференциальный оператор Бесселя, порядок дифференцирования равен 2m. Пространства основных функций, представляющие собой образы смешанного преобразования Фурье - Киприянова - Катрахова функций, исчезающих в начале координат и на бесконечности, рассмотрены в данной работе. Изучается возможность приближения функций из весовых классов Лебега $L^{gamma}_p$ со степенным весом $Pi|x_i|^{gamma_i},$ именно, доказана теорема о плотности $Phi^{+}_{gamma}$ в пространстве функций Лебега $L^{gamma}_p$.
We study the class of test functions $Phi^{+}_{gamma},$ constructed on the principle of Lizorkin spaces by means of mixed Fourier-Kipriyanov-Katrakhov transform. Initially, such classes of functions, constructed on the basis of a mixed Fourier-Bessel transform, were investigated by L. N. Lyakhov. The spaces introduced by him could not take into account “odd” orders of singular derivatives. But the latter appeared to be fundamentally necessary in the problems of determining the fundamental solutions of differential equations (ordinary and in partial derivatives). The integral Kipriyanov-Katrakhov transform (belonging to the class of Bessel transforms) is adapted to work with singular differential operators of the type $D^{2m+k}_Bfrac{partial^k}{partial x^k}B^m_x,$ where k takes values 0 or 1, $B^m_x$ is a singular differential Bessel operator and the order of differentiation is 2m. The spaces of the basic functions that represent the images of the mixed Fourier-Kipriyanov-Katrakhov transform of functions vanishing at the origin and infinity are considered in this paper. We study the possibility of approximating functions from weighted Lebesgue classes $L^{gamma}_p$ with power weight $Pi|x_i|^{gamma_i},$ namely, the density theorem $Phi^{+}_{gamma}$ in the Lebesgue function space $L^{gamma}_p$.
NUMERICAL SIMULATION OF LI-ION BATTERY THERMO-ELECTROCHEMICAL PROCESSES
Authors: Захаров П.Е. , Никифорова М.А. 
Published: March 2023

Рассматривается численное моделирование термо-электрохимических процессов Li-ion аккумулятора на микроуровне. Математическая модель термоэлектрохимических процессов описывается нелинейными уравнениями для концентрации, потенциала и температуры. Область расчета состоит из трех подобластей: два электрода и электролит. На интерфейсе электродов и электролита происходит процесс интеркаляции и деинтеркаляции ионов лития, который описывается нелинейным уравнением Ботлера - Волмера. Основная сложность в численной реализации состоит в разрывности концентрации и потенциала на интерфейсе подобластей. Для учета разрывности в аппроксимации по пространству связанной системы используются смешанные конечные элементы: разрывные элементы Галеркина для концентрации, потенциала и непрерывные элементы Галеркина для температуры. Аппроксимация по времени выполнена с использованием чисто неявной схемы. Нелинейная система уравнений, полученная при аппроксимации, решается методом Ньютона.
We present a numerical simulation of thermo-electrochemical processes of a Li-ion battery. Mathematical model of thermo-electrochemical processes is described on a microscopic scale and contains nonlinear equations for concentration, potential and temperature. A Li-ion battery consists of three subdomains: two electrodes and the electrolyte. On the interface of electrodes and electrolyte there are Lithium ions intercalation and deintercalation processes which are described by the Butler-Volmer nonlinear equation. The main problem of numerical implementation is the discontinuity of concentration and potential at the interface of the subdomains. To take into account the discontinuity, we use mixed finite elements in spatial approximation of a coupled system: discontinuous Galerkin elements for concentration and potential and continuous Galerkin elements for temperature. The time approximation is performed using a fully implicit scheme. The nonlinear system of equations obtained by approximation is solved by the Newton method.
Invertion of infinite Gaussian matrices
Authors: Федоров Ф.М. , Павлов Н.Н. , Потапова С.В. , Иванова О.Ф. . 
Published: March 2023

Исследовано существование левосторонних, правосторонних и двусторонних обратных матриц для так называемых гауссовых бесконечных матриц, т. е. для верхних бесконечных треугольных матриц с отличными от нуля элементами на главной диагонали. Доказано существование единственной двусторонней обратной матрицы для гауссовых матриц. Найдено явное выражение обратной матрицы для гауссовой матрицы любого порядка, в частности, и для бесконечного случая. Данное выражение удобно для его реализации на ПК, поскольку вычисления основаны на рекуррентных соотношениях. Такой подход можно распространить и для так называемых треугольных бесконечных матриц, т. е. для нижних бесконечных треугольных матриц с отличными от нуля элементами на главной диагонали. Таким образом, появляется возможность обращения бесконечной матрицы с бесконечным рангом, поскольку такие матрицы разлагаются на произведение двух матриц: треугольной и гауссовой матриц.
We study existence of the left inverse, right inverse and inverse of Gaussian infinite matrices (those are the upper infinite triangular matrices with nonzero elements on the main diagonal). The existence of a unique inverse of the Gaussian matrix is proved. Also, an explicit expression for the inverse of the Gaussian matrix of any order is found, including the infinite case. Implementation of this expression is very convenient, since calculations are based on recurrence relations. Such approach can be extended to triangular infinite matrices (those are the lower infinite triangular matrices with nonzero elements on the main diagonal). Thus, there is the possibility of inversion of an infinite matrix of infinite rank, since such matrices decompose into the product of two matrices, a triangular and a Gaussian.
The Development a 3D English Module for English Lesson in 4Th Grade in Elementary School
Authors: Hidayati Anis Rohmah , Ningrum Ary Setya Budhi , Suci Dewi Nur 
Published: March 2023

English teaching at an elementary school in Indonesia has experienced some changes in the curriculum in 2013. Based on the curriculum, 2013 is not obliged to teach English to students, so English lessons become a local subject that teaches material based on KI (Kompetensi Inti) and KD (Kompetensi Dasar). The teacher applies local content learning based on KI and KD because it is in accordance with the achievement target and is directed and structured according to the age level. That statement makes the current research to develop a module to help students easily study. The module that the current research develops is a character-based, three-dimensional module. In accordance with its research goals, this study used the ADDIE research and development (R&D) methodology (Analysis, Design, Development, Implementation, and Evaluation). The findings of this study demonstrates the need to gather expert and student input to determine whether product development is both practical and valid. 1) Validation by material and linguistic experts receives 87.3%, meeting the criteria for a good product that is genuine and does not require change; 2) Media expert validation received 96.6% of the vote; thesuperior product criterion is very valid and does not require adjustment; 3) The student evaluation of the product trial received 87.62%, with the criterion being a good product. The meaning is valid and does not require revision. Based on the findings, this study can be concluded that research hopefully can help students understand English lessons, so the students can improve their motivation to study English.
Meningkatkan Komitmen Dan Kemampuan Guru Menyusun Rencana Pelaksanaan Pembelajaran Masa Pandemi Melalui Praktek Dengan Teknik Umpan Balik Di SDN Brudu Jombang
Authors: Maisaroh Siti 
Published: March 2023

Wabah pandemic Covid 19 makin tak terbendung dengan eskalasi sebaran yang kuat menjelajah ruang dan waktu pada skala luas dan cepat. Corona virus sudah bertransformasi menjadi pandemic dan memaksa manusia untuk membatasi ruang gerak interaksi antar sesama manusia. Protokol jaga jarak sosial dan fisik menjadi opsi untuk memutus rantai penyebaran. Tanpa terkecuali yang terdampak bencana global ini adalah aktivitas di tempat ibadah, pelayanan publik, dan lembaga pendidikan. Sekolah sebagai lembaga pendidikan formal dengan rutinitas kegiatan belajar mengajar konvensional tatap muka di ruangan kelas sangat merasakan imbasnya. Sejumlah agenda dan program telah dipetakan dan dijalankan untuk menjamin kesehatan dan keselamatan warga negara. Pemerintah juga telah menyusun peta jalan agar pembelajaran tetap berlangsung meskipun siswa diliburkan secara fisik. Kebijakan belajar dari rumah dengan platform pembelajaran jarak jauh menjadi alternatif solusinya. Surat Edaran Sekretaris Jenderal Kementerian Pendidikan dan Kebudayaan Nomor 15 Tahun 2020 tentang Pedoman Penyelenggaraan Belajar Dari Rumah Dalam Masa Darurat Penyebaran COVID-19. Surat Edaran Menteri Pendidikan dan Kebudayaan Nomor 14 Tahun 2019 tentang Penyederhanaan Rencana Pelaksanaan Pembelajaran (RPP). Dalam surat edaran tersebut dijelaskan bahwa RPP cukup satu lembar saja, namun bukan berarti lebih dari satu lembar tidak diperbolehkan. Yang pasti dalam sebuah RPP harus mencakup tujuan pembelajaran, langkah-langkah atau kegiatan pembelajaran dan asesmen atau penilaian. Pada fase ini keterampilan dan kreativitas guru mengimplementasikan strategi, metode, dan teknik pembelajaran sangat dibutuhkan. Jangan sampai siswa di rumah semakin terbebani oleh materi pelajaran yang berat dan di akhir pembelajaran diberi tugas berlebihan. Prinsip bahwa belajar itu sangat menyenangkan (enjoyfull learning) harus dikedepankan. Sebuah kendala bagi guru, karena harus meninggalkan strategi pembelajaran tatap muka ke strategi pembelajaran moda daring (BDR). Manfaat penelitian ini, khususnya bagi guru-guru yang menjadi subjek penelitian, adalah meningkatnya komitmen dan kemampuan guru. Sehingga dapat membuat RPP masa pandemi dan memudahkan guru dalam melaksanakan pembelajaran daring.
Research and Experience Reference on London’s Response to Climate Change in the Twenty-first Century
Authors: Wang Renrui , Wang Fuyuan 
Published: March 2023

London’s approaches to tackling climate change after the 21st century are multifaceted and relatively systematic. The aim of this research paper is to analyse London’s actions in response to climate change and to draw out what valuable lessons London has for the world in terms of its response to climate change. This paper provides an in depth analysis of London’s policies and actions on climate mitigation in the areas of “greenhouse gas emissions” and “energy infrastructure”, and climate adaptation actions in the areas of “city green belt and urban afforestation”, “UHI and thermal crisis management” and “water supply infrastructure and sustainable drainage”. It then examines the positive aspects of these actions to determine what London has to say about climate change to the rest of the world and other cities. This paper also discovers that to effectively mitigate and adapt to climate change, London has not only established carbon reduction targets, but also created a large academic research network, represented by the LCCP. At the same time, London has developed a scientific climate change adaptation planning framework (P2R2) that focuses on four key areas: Economic, environmental, health, and infrastructure sectors, and three types of risks: Flooding, heat, and water supply, and emphasizes the dynamics and flexibility of each adaptation strategy
Pengaruh Kualitas Layanan Elektronik, Kualitas Makanan, Persepsi Manfaat Dan Kemudahan Terhadap Kepuasan Konsumen Dan Niat Pembelian Ulang Pada Pizza Hut Delivery Di Surabaya
Authors: Prasetyo Yanuar Danu , Suryani Tatik 
Published: March 2023

Background – How to satisfy and attract customer intention is very crucial for supporting business performance. Now days, not only the quality of foods and product benefits but also the technology online supporting are very important. Pizza Hut one of a big restaurant have implemented online applications for improve it’s services. So, it’s very important to examine the impact of their online service attributes on Consumer Satisfaction and Repurchase Intentions.
Aim – This study aims to examine the effect of Electronic Service Quality, Food Quality, Perceived Benefits, Perceived of Easiness on Customer Satisfaction and Intention to Repurchase Pizza Hut product in Surabaya.
Design / Methodology / Approach –Type of this research is quantitative with survey method by distributed questionnaires. 150 respondents involved in this research which selected by purposive sampling with criteria such as consumer often buy product by using online services and lives in Surabaya. Structural Equation Modelling Smart-PLS program was used for analyzing data.
Findings – Electronic Service Quality, Food Quality, Perceived Benefits and Perceived Ease of Use effect significantly toward Customer Satisfaction. Electronic Service Quality and Customer Satisfaction effect significantly on Repurchase Intention. Food Quality, Perceived Benefits and Perceived Ease to Use have no significant effect on Repurchase Intention.
Conclusion - 9 hypotheses were proposed to see the relationship between variables 3 of which were rejected, namely Food Quality, Perceived Benefits, Perceived Convenience had no significant effect on Repurchase Intentions
Research implication – Customer satisfaction is paramount and it can be driven through keeping Electronic Service Quality, Food Quality, Perceived Benefits and Perceived Ease of Use
Limitations – this research was not analyzed further this effect of attributes of online application implementation the consumers based on digital literacy
Antropomorfisme Merek dalam Kajian Filsafat Ilmu
Authors: Pramesti Diesyana Ajeng , Harsono Mugi 
Published: March 2023

Background – Anthropomorphism refers to the customer's tendency to think of a human characteristic that is in a product or brand and has become a brand positioning strategy that has received attention in marketing research in recent years. Anthropomorphism strategy is needed and becomes an effective alternative strategy in marketing communication, but there is some debate about the success of anthropomorphism strategy in marketing communication. The discrepancy in the findings of the debate makes the anthropomorphism strategy interesting for further research, especially on consumer attitudes.
Aim – Anthropomorphism concept is very important in developing a brand for the consumers. Marketing strategies can provide information about the introduction and market’s problems, provide information on alternative solutions, analysis of alternative solutions, and evaluation. The anthropomorphism strategy is used to get closer and communicate the brand to the consumers. This study develops a conceptual framework that describes the philosophy of science about brand anthropomorphism from a marketing perspective.
Design/methodology/approach – This study uses secondary data in the form of literature studies and mapping on 78 articles published in Scopus-indexed journals, especially Q1 and Q2 for 47 years from 1975 to 2021. The framework is presented in 3 main aspects that are ontology, epistemology, and axiology. That aspect is discussed in depth in accordance with the development of existing scientific studies.
Findings – Brand anthropomorphism is one of the most effective marketing strategies to bring brands closer to their consumers. This study found the antecedents and consequences of brand anthropomorphism, such as brand image congruity, anthropomorphic advertisement, customer intention, willingness to register, etc. These findings, theoretically, it is expected to provide a roadmap for further anthropomorphism research and practice as the input in determining marketing strategies for companies.
Research implication – A conceptual model of brand anthropomorphism is presented with an explanation of the influencing factors and the factors that are influenced. This study can help for further research about anthropomorphism.
Limitations – This study only refers to Scopus Q1 and Q2 for 47 years from 1975 until 2021.
THE WHEEL STRESS-STRAIN ANALYSIS AFTER HEAT TREATMENT USING THE THEORY OF ELASTICITY
Authors: Korzhin Sergey , Melanin Viktor , Bespal'ko Sergey , Komissarova Evgeniya 
Published: March 2023

The paper is devoted to modeling the stress-strain state of a car wheel in the case of its heat treatment. The calculation technique is based on the application of the finite element method for a specialized design diagram. The final elements have the form of rings of triangular cross-section. The initial equations are used on the basis of the theory of elasticity. The approximation of movements along the axis of rotation and along the radius is linear, in the circumferential direction it has the form of trigonometric series.
Using the proposed technique, calculations of a wheel with two variants of rim hardening are implemented: as one annular strip on the rolling surface and with the use of two additional strips with an intermediate degree of hardening.
The developed means of modeling can be used to develop methods and to select wheel hardening parameters.
Media Sosial Youtube unntuk Meningkatkan Kemampan Bahasa Inggris dan Matematika pada Anak Usia Dini
Authors: Sinta Sinta , Saftari Maya 
Published: March 2023

The easier it is to use YouTube social media that can be accessed by children to the elderly, making everyone's visual motor skills able to remember, especially in early childhood. As we know that children who hone their visual motor skills will be able to record and recall what they have seen and heard. YouTube social media makes it easy for parents to get used to their children learning while watching. By using the method of observation and interviews with working parents and children, the average success in getting children used to learning foreign languages, namely English and basic mathematics, so that children get used to it and easily learn these abilities. By using YouTube social media, it makes children love English and mathematics even more from an early age because English and mathematics are basic sciences that all ages must learn. This basic knowledge is very supportive to enter every level of education and work.
Keywords: youtube social media, foreign language, basic matgematics
Fungsi dan Peran Guru Pendidikan Agama Islam untuk Peningkatkan Kedisiplinan Pelaksanakan Sholat Berjamaah Siswa
Authors: Ridwan Ahmad , Asmita Delvira , Wulandari Neiny Puteri 
Published: March 2023

This paper examines the role of Islamic religious education teachers in improving the discipline of congregational prayers. The author focuses this paper on the role of Islamic religious education teachers in improving the discipline of congregational prayers. Teachers play an important role in guiding student behavior to achieve learning goals. The same is true in carrying out prayer services, because a teacher is not only a facilitator who is obliged to provide information about various matters regarding knowledge. Islamic religious education is a professional educator who has the task of educating, teaching and guiding students in schools in understanding and practicing Islamic religious teachings. Discipline is an exercise in forming or perfecting and carrying out certain patterns of behavior to comply with rules or regulations accompanied by awareness and sincerity. Discipline in carrying out congregational prayers is perfecting or carrying out congregational prayers on time. Discipline in prayer means practice that forms, straightens, or perfects the implementation of prayer both in the procedure for carrying it out and in the discipline of its implementation. Discipline in prayer can also mean efforts to shape one's behavior to be disciplined in prayer implementation, both movement, reading and also the time of its implementation. Therefore, Islamic religious education teachers play a very important role and have a function in increasing the discipline of praying in congregation of students..
Peningkatan Hasil Belajar IPA Melalui Model Problem Based Learning Berbantu Media Canva pada Siswa Kelas V SDN Pandeanlamper 03
Authors: Santi Mentari Dharma , Nursyahidah Farida , Nugroho Aryo Andri , Estiyani Estiyani 
Published: March 2023

This study aims to improve science learning outcomes for fifth grade students at SDN Pandeanlamper 03 using the Problem Based Learning (PBL) model with the help of Canva media. This study uses a class action research method with a research design in the form of two cycles. Each cycle applies four steps according to Kemmis and M.K. Taggart in Arikunto (2010), namely planning (planning), implementation of action (action), observation (observation) and reflection (thinking). The dependent variable is student learning outcomes and the independent variable is the Canva-assisted Problem Based Learning model. Data collection methods used include interviews, observation, tests and documentation with quantitative and qualitative analysis techniques. The research subjects were fifth grade students at SDN Pandeanlamper 03 consisting of 28 students. The results of the study show that the application of the PBL model with the help of Canva media can improve student learning outcomes in science subjects. In Cycle I, the percentage of students who successfully completed the subject was 57%, while in Cycle II it increased to 79%. This increase in learning outcomes meets the success indicator of 70%. In addition, observations also show that students are more active and involved in the learning process when using the PBL model with the help of Canva media.