bluuebunny/crossref_metadata_2025 huggingface dataset:
Good corporate governance moderates the effect of corporate social responsibility disclosure, financial distress and managerial ability on earnings management with variable
Authors: Prameswari Ni Putu Anindya Sarasija , Suaryana I Gusti Agung Ngurah , Sujana I Ketut , Rasmini Ni Ketut
Published: December 2022

The purpose of this study is to empirically examine the effect of corporate social responsibility disclosure, financial distress, and managerial ability on earnings management and empirically test good corporate governance in moderating the effect of corporate social responsibility disclosure, financial distress, and managerial ability on earnings management. The population in this study are all manufacturing companies listed on the IDX in 2017-2021. The sampling method used in this study was non-probability sampling with purposive sampling technique and 70 samples were obtained. This research technique is Moderated Regression Analysis (MRA) using the SPSS program. The results of the study show that the corporate social responsibility disclosure has no significant effect on earnings management. Financial distress has a significant positive effect on earnings management, meaning that the higher the company's level of financial distress, the earnings management will increase. Managerial ability has no significant effect on earnings management. Good corporate governance is not able to moderate the corporate social responsibility disclosure on earnings management. Good corporate governance is able to weaken financial distress in earnings management, meaning that the higher the good corporate governance, the weaker the relationship between financial distress and earnings management.
Education and implementation of society 5.0 values in Cisadane Riverside communities towards clean rivers and a healthy environment
Authors: Fiyul Arfiani Yulianti , Sutarman Sutarman , Kurniawan Cece Iwan , Fahreza Muhamad , Supaeha Supaeha
Published: December 2022

The purpose of this study was to analyze the application of Society 5.0 values to the Cisadane riverbank community toward clean rivers and a healthy environment. And want to educate the people on the banks of the Cisadane river in implementing related values. This research method uses qualitative methods that are used to investigate, describe and find the object under study. The data collection technique is through (1). Interviews were conducted with informants. namely traders, the general public, and Rt and Rw administrators. (2). Observation, observing the events that occurred in the field around the Cisadane river, Tangerang, Cisauk, Kranggan. (3). Literacy studies in the form of documentation, archives, important notes, photographs, maps of the Cisadane River, and so on. The results of the research are the human resources of the Cisadane riverbank community, who can consistently create clean Cisadane rivers and healthy environments. A technological innovation starts from input, output, and outcome.
Identity politics of Hindu society in Bali
Authors: Paramita I Gusti Agung , Triguna Ida Bagus Gde Yudha , Utama I Wayan Budi
Published: December 2022

Balinese researchers such as Nordholt and Picard have extensively explored the discourse of identity formation in Balinese society from the colonial era to modern Bali. Picard, for example, considers Balinese identity to be formed through dialogic construction, namely the contact of Balinese people with their interlocutors (foreigners). But in its development, the Balinese try to construct their own identity according to the references given by the orientalists. In this study, it was found that there was a continuity of discourses with nuances of identity politics in Balinese society such as the emergence of discourse, kebalian, Ajeg Bali, efforts to legitimize Balinese language, script and traditional clothing in public spaces, and there was even a Balinese family planning movement as a counter movement against population control efforts through the national Family Planning (KB) program. The latest is the emergence of the Dresta Bali Hindu movement which seeks to restore the local Balinese variant of Hinduism. The novelty of this research is the argument that identity political discourse and movements in Balinese society are part of positioning, namely as a way for society or social groups to position or define themselves among external challenges.
Teaching critical thinking and cultural intelligence via virtual exchange: a practice report on the utilization of research-based principles to support and assess learning outcomes
Authors: Sims Lander
Published: December 2022

While it is appealing to consider the potential benefits of incorporating virtual exchange and other technology-based tools when designing a learning experience, it is irresponsible to assume that technology in-and-of itself has the power to improve learning outcomes. Research-supported pedagogy and theory must form the basis of any attempt to incorporate virtual exchange into a learning activity. This paper presents a detailed examination of an undergraduate liberal arts course built on research-supported theories and practices to support learning outcomes, including collaborative cognitive load theory, the cognitive theory of multimedia learning, and instruction based on self-explanation and self-reflection. Initial assessment of the course suggests success in achieving learning outcomes related to critical thinking and intercultural discourse but highlights the need for objective data to support these claims. As virtual exchange gains momentum, it is necessary to continually assess and improve its utilization to guarantee its educational value.
Nilai sosial-religius pada tradisi pantang tanah dan monjojak tanah
Authors: Zulhandayani Fitri , Wuriyani Elly Prihastuti , Harahap Rosmawaty
Published: December 2022

Tujuan penelitian ini untuk menjelaskan nilai sosial-religius terhadap kajian tradisi lisan yang dimiliki oleh masyarakat Suku Rao, tradisi tersebut adalah “pantang tanah” dan “monjojak tanah”. Metodologi yang digunakan yaitu pendekatan kualitatif deskriptif dengan melakukan studi pustaka dan metode analisis data menggunakan metode analisis isi. Berdasarkan penelitian yang sudah dilakukan maka dapat ditarik sebuah kesimpulan bahwa masyarakat Suku Rao pada sebuah tradisi pantang tanah dan monjojak tanah hingga saat ini masih dipercaya mempunyai manfaat serta dipercayakan membawa berkah, keselamatan bahkan menghindari anak dari marabahaya, seperti sakit perut, lumpuh, bisu, cacat mental dan lain sebagainya. Niali social religious menitikberatkan pada rasa penghormatan kepada orang lain. Tradisi pantang tanah mendeskripsikan masyarakat setempat menghormati petuah-petuah dari orang tua suku Rao. Sama halnya dengan tradisi upacara monjojak tanah dimana prosesi upacara itu sendiri memiliki nilai sosial-religius dari segi menghormati lelur, mencintai masyarakat bahkan bergotong-royong membantu segala persiapan prosesi upacara monjojak tanah itu sendiri.Social-religious value in the tradition of pantang tanah and monjojak tanahThis study was aimed at explaining the socio-religious value of oral traditions owned by the Rao people, these traditions are "pantang tanah" and "monjojak tanah". The methodology used was descriptive qualitative approach by conducting library research and data analysis method using content analysis method. Based on results show that the Rao Tribe community in a tradition of pantang tanah and monjojak tanah is still believed to have benefits and is entrusted with bringing blessings, safety and even avoiding children from harm, such as stomach pain, paralysis, muteness, disability. mentally and so on. Social religious values focus on respect for others. The tradition of pantang tanah describes the local people respecting the advice of their parents from the Rao tribe. It is the same with the tradition of the monjojak tanah ceremony where the ceremonial procession itself has a socio-religious value in terms of respecting ancestors, loving the community, and even working together to help in all the preparations for the procession of monjojak tanah ceremony itself.
Rebu: Tradisi pantangan suku Karo (Studi etnografi pada suku Karo di kota Medan)
Authors: Ginting Susanto , Harahap Rosmawaty , Wuriyani Elly Prihastuti
Published: December 2022

Tujuan penelitian ini adalah untuk mendeskripsikan dan menganalisis faktor penyebab pergeseran tradisi rebu pada suku Karo di Kota Medan. Lokasi penelitian adalah Kota Medan. Metode yang digunakan dalam penelitian ini adalah metode pendekatan etnografi. Teori yang digunakan sebagai alat analisis dan dasar pembahasan masalah dalam penelitian ini adalah teori dekonstruksi. Teknik pengumpulan data yang digunakan peneliti adalah observasi, wawancara mendalam, dan dokumentasi. Teknik analisa data adalah dengan menggunakan analisa deskriptif kualitatif dengan pendekatan etnografi. Hasil penelitian menunjukkan bahwa faktor penyebab pergeseran tradisi rebu disebabkan dua faktor. Pertama faktor dari dalam masyarakat sendiri yakni: kurangnya pemahaman terhadap tradisi rebu, kurangnya sosialisasi dalam masyarakat, hilangnya nilai-nilai budaya. Kedua, faktor dari luar masyarakat yakni adanya arus modernisasi dan globalisasi yang mengubah pola pikir, faktor lingkungan yang harus beradaptasi dengan lingkungan tempat tinggal, perkawinan antarsuku atau perkawinan campur, faktor ekonomi untuk memenuhi kebutuhan  hidup, dan faktor politik untuk mencapai sesuatu kepentingan politik.Rebu: Tradition of avoiding the Karo tribe (Ethnographic Study of the Karo Tribe in Medan City) The purpose of this study was to describe and analyze the factors causing the shift in the rebu tradition in the Karo Tribe, Medan. This research was conducted in Medan. The method used in this study is an ethnographic approach. The theory used as an analytical tool and the basis for discussing the problem in this study is the theory of deconstruction. Data collection techniques are observation, in-depth interviews, and documentation. The data were then analyzed using a qualitative descriptive analysis with an ethnographic approach. The results showed that the factors causing the shift in the rebu tradition were caused by two factors. First, factors from within the community itself, namely: lack of understanding of the rebu tradition, lack of socialization in society, and loss of cultural values. Second, factors from outside the community, namely the currents of modernization and globalization that change mindsets, environmental factors that must adapt to the environment in which they live, inter-ethnic marriages or mixed marriages, economic factors to meet the needs of life, and political factors to achieve political interests.
Augmented reality-based textbook innovation as learning media for learning from home
Authors: Sartono Kus Eddy , Laisaroh Anggri
Published: December 2022

Penelitian ini bertujuan menghasilkan buku ajar berbantuan Augmented Reality (AR) yang efektif, valid, dan praktis untuk dimanfaatkan selama BDR di jenjang sekolah dasar. Metode penelitian ini menggunakan Research and Development (RD). Prosedurnya dimulai dari studi literatur, kemudian dilanjutkan dengan perencanaan, penilaian ahli, uji coba lapangan awal, revisi, dan uji coba lapangan utama. Efektivitas buku ajar ditentukan melalui pengujian lapangan, sedangkan validitasnya ditentukan melalui penilaian ahli (ahli materi, ahli bahasa, dan ahli media). Adapun praktikalitasnya ditentukan melalui respon siswa dan respon guru.  Pengukuran atas tiga indikator tersebut dilaksanakan di kelas IV SDN Jetisjogopaten, dan SDN Pandowoharjo. Berdasarkan hasil pengukuran, buku ajar berbantuan AR termasuk dalam kategori “layak”. Artinya, buku ajar yang dikembangkan melalui penelitian ini bisa digunakan karena telah memenuhi  standar kelayakan menurut ahli, direspon baik oleh guru dan siswa, dan efektif untuk meningkatkan aktivitas dan prestasi belajar siswa kelas IV SD. Atas dasar temuan dan pembuktian di atas, penelitian ini merekomendasikan kepada guru dan orangtua untuk memfasilitasi anak dengan buku ajar berbasis AR sebagai media pembelajaran di rumah.Augmented reality-based textbook innovation as learning media for learning from homeThis research and development aimed to generate effective, valid, and practical Augmented Reality (AR)-assisted textbooks during Learning From Home for the elementary school level. The development procedure started with a literature study, then continued with planning, expert assessment, preliminary field testing, revisions, and primary field testing. The effectiveness of the textbook was determined through field testing, while the validity was determined through expert judgment (experts of material, language, and media). The practicality was determined through the responses of the students and the teachers. This study was carried out in grade IV SDN Jetisjogopaten and SDN Pandowoharjo. AR-assisted textbooks are included in the “feasible” category based on the measurement results. It means that textbooks developed through this study can be used since they meet the eligibility standards according to the expert, are responded to by both teachers and students, and effectively increase fourth-grade elementary school students' activity and learning achievement. Based on the findings and evidence above, this study recommends that teachers and parents facilitate children with AR-based textbooks as learning media.
Readiness, acceptance, and social presence in full online learning
Authors: Sagala Gaffar Hafiz , Hasibuan Ali Fikri , Sriwedari Tuti
Published: December 2022

This study aimed to examine the effect of lecturer readiness in online learning on the acceptance of lecturers in online learning applications, and the effect of lecturer acceptance in online learning applications on the lecturer's perception of social presence. The subjects of this study were the lecturers at the Faculty of Economics, Universitas Negeri Medan which was taken by a total sampling technique. This study used a survey method with electronic questionnaires to collect data. Of the 113 lecturers, 81 responses were returned, and there were two incomplete questionnaires. This study had 79 responses that met the requirements of the analysis. The data were analyzed using Variance-based SEM. The results of the data analysis indicate that perceived usefulness is a critical variable in getting social presence in online learning. Meanwhile, the readiness of lecturers in online learning is an essential antecedent of the acceptance of the use of online learning applications
Smart university implementation in higher education to improve the graduates’ competitiveness
Authors: Amron Amron , Putra Febrianur Ibnu Fitroh Sukono , Budiantoro Risanda Alirastra , Wardhani Masitha Fahmi
Published: December 2022

This research aimed to implement a smart university to optimize the three higher education principles aka Tri Dharma Perguruan Tinggi (Education Dharma, Research Dharma, and Community Service Dharma). A strategic step that can be taken is to apply digitalization to increase the selling value of universities in the education industry and increase the usefulness of the satisfaction of lecturers and students. The research is exploratory qualitative using interviews, observations, and literature studies as data collection techniques. The sampling method used was non-probability sampling (purposive sampling). The findings show that several supporting factors that influence the optimization of the three principles of higher education are the flexibility of the workplace and time, as well as the use of information technology which is easier to use and has high accessibility. Facilities and infrastructure are supporting elements. The hardware and software infrastructure condition in universities is still inadequate to support a quality learning process. Universities need to improve the performance of educators and education staff.
Investigating students’ on-line exam anxiety and culture on self- efficacy: The moderating role of coping strategy
Authors: Susilowati Nurdian , Latifah Lyna , Mahmud Amir , Aeni Ida Nur , Sari Puji Novita
Published: December 2022

This study is aimed at examining the moderating role of coping strategy in online exam anxiety and culture on students' self-efficacy. Function-problem-focused coping is the ability of individuals to focus on solving the stress problems they experience during the exam. Meanwhile, emotion-focused coping is the ability of individuals to focus on managing their emotions during online exams.  The research population consisted of students of the Faculty of Economics who had taken two years of online learning and online exams. By using the proportionate random sampling technique, a sample of 228 students filled out the google questionnaire form. Data collected were analyzed using Moderated Regression Analysis (MRA). Results show that coping strategy weakens the relationship between anxiety and student self-efficacy during online exams. On the other hand, coping strategy can strengthen the relationship between culture and self-efficacy. In managing coping strategy, students pay attention to function-problem-focused coping and emotion-focused coping. Self-efficacy studies in online exams (in the context of learning outcomes assessment) need to be studied in more detail. Especially now that learning is done virtually, the assessment of learning outcomes plays an important role.
Scout extracurricular activity: A positive effect on students’ potential entrepreneurial character
Authors: Hapsari Maulana Mega
Published: December 2022

Scout extracurricular activity in the education world can create entrepreneurship as indicated by working hard, discipline, responsibility, independence, creativity, motivation to be successful, and innovativeness. This study was aimed to examine scout extracurricular activity effect on the potential entrepreneurial character of students at junior high schools in Indonesia. This research employed a qualitative approach with a case study research design. This research was conducted in junior high schools in Sumatra, Java, Kalimantan, Sulawesi, Nusa Tenggara, Bali, and Papua. About 700 students were employed as the sample. The sample was selected using a random sampling technique. Instrument in the form of questionnaire was distributed to the participants using google form. The result of the research shows that 83% of respondents strongly agree with Scout extracurricular activity. 86% of respondents strongly agree with the positive effect of perceived entrepreneurial spirit. Overall, scout extracurricular activity can contribute positively to the entrepreneurial character in junior high school students.
Электронографическое исследование температурно-временных зависимостей кристаллизации нанотолщинных аморфных пленок CuIn-=SUB=-5-=/SUB=-Te-=SUB=-8-=/SUB=-, сублимированных в обычных условиях и в условиях воздействия внешнего электрического поля
Authors: Дашдамирова Г.Е.
Published: December 2022

Методом электронографического структурного анализа исследованы процессы кристаллизации аморфных пленок CuIn5Te8, полученные в обычных условиях и в условиях воздействия внешнего электрического поля напряженностью 500 В · см-1. Построены изотермические кривые фазовых переходов и определены кинетические параметры фазовых превращений: установлены мерности роста кристаллов и значения активационных энергий. Показано, что при кристаллизации аморфных пленок CuIn5Te8 скорости зародышеобразования и дальнейшего их роста следуют соотношениям Аррениуса. Ключевые слова: электронографический структурный анализ, тонкие пленки, изотермы кристаллизации, энергия активации.
Фотолюминесценция растянутых Ge микромостиков при различных температурах: эксперимент и моделирование
Authors: Байдакова Н.А. , Яблонский А.Н. , Гусев Н.С. , Кудрявцев К.Е. , Морозова Е.Е. , Юрасов Д.В. , Алешкин В.Я. , Нежданов А.В. , Новиков А.В.
Published: December 2022

The results of the experimental study and theoretical simulation of the photoluminescence (PL) spectra of strained germanium microbridges with improved heat sink are reported. It was shown that in the structures under study the main contribution to the PL signal of micro-bridges is provided by the radiative transitions from Г-valley to the valence band in the whole considered temperature range (from 80 to 300 K). The influence of interference and self-absorption effects on the shape of the PL spectra of Ge microbridges is discussed. It was demonstrated that Ge microbridges with improved heat sink which was achieved due to the adhesion of the bridges to the underlying layers due to capillary forces are not subjected to the additional stretching as the temperature decreases in contrast to the suspended ones.
Спин-зависимое туннелирование в двойной квантовой точке в режиме "медленной" эволюции
Authors: Хомицкий Д.В. , Запруднов Н.А.
Published: December 2022

The tunneling and spin dynamics is studied for the hole states in a GaAs-based double quantum dot in the presence of strong spin-orbit coupling and periodic electric field. The regimes of tunneling with the spin flip are considered for the “slow” evolution when the field frequency is lower than the other energy parameters of the stationary part of the Hamiltonian. It is found that the under such conditions the spin flip tunneling may take place at both resonant and non-resonant regimes with respect to the Zeeman level splitting. In the latter case the driving frequency may be lower compared to the resonance one, and the system dynamics resembles the Landau-Zener-Stückelberg-Majorana interference effects arising during the dynamic level passage in isolated quantum dots.
The Analytical Effects of a Hydrostatic Pressure on the Ground State Energy of GaAs Quantum Dot at Low-Temperature: Algebraic Method
Authors: Nammas F.S. , Hasan Eyad Hasan
Published: December 2022

This analytical study focused on discussing the collective effects of hydrostatic pressure and temperature on the ground state energy for two electrons trapped in GaAs parabolic quantum dot in the presence of a magnetic field using the effective mass approximation. The electronic interaction was approximated by the Johnson-Payne potential model, where its parameters were carefully chosen to match the Coulomb interaction. It is noted that the ground state energy decreases with an increment in pressure while it increases linearly slightly with increasing temperature. As is customary, it was found that ground state energy decreases with increasing dot size and reach its bulk value as the dot becomes wider. Among the most prominent notes related to this study were as follows: (i) The largest contribution to the total ground state energy is caused by the relative motion since the effect of pressure on this part is more pronounced than the part of the center of mass that often does not feel the presence of pressure. (ii) Ground state energy shows temperature insensitivity while pressure exerts a tangible effect on the ground state energy in the strong magnetic field confinement. (iii) The effect of temperature on the ground state energy is always the opposite of the pressure effect. (iv) With regard to the increase in pressure, it was found that it reduces the electron separation (r), therefore the ground state energy decreases in the presence of the harmonic interaction that is directly proportional to the square of r, but compared to previous works mentioned in the literature, energy showed increased behavior because Coulomb's interaction is inversely proportional to the electron separation. (v) In the region of weak confinement (R>aB*), the effect of pressure on ground state energy becomes neglected, while this effect becomes noticeable in the region of ??strong confinement (R<aB*). Keywords: Quantum Dots, Hydrostatic Pressure, Harmonic e-e Interaction.
Применение технологии реактивного ионно-плазменного травления для управления чувствительностью 4H-SiC-фотодиодов
Authors: Афанасьев А.В. , Забродский В.В. , Ильин В.А. , Лучинин В.В. , Николаев А.В. , Серков А.В. , Трушлякова В.В. , Чигирев Д.А.
Published: December 2022

The possibility to increase the responsivity of 4H-SiC p+– n –n+ - photodiodes by varying the thickness of the p+ - epilayer has been studied. It is shown that the thinning of the upper epilayer by RIE with the use of metal contacts as a mask makes it possible to control both the maximum responsivity and the spectral dependence of the responsivity of photodiodes and does not lead to degradation of dark electrical characteristics.
Исследование активных областей на основе многопериодных сверхрешеток GaAsN/InAs
Authors: Бабичев А.В. , Пирогов Е.В. , Соболев М.С. , Денисов Д.В. , Фоминых H.А. , Баранов А.И. , Гудовских А.С. , Мельниченко И.А. , Юнин П.А. , Неведомский В.Н. , Токарев М.В. , Бер Б.Я. , Гладышев А.Г. , Карачинский Л.Я. , Новиков И.И. , Егоров А.Ю.
Published: December 2022

The results of a study of nitrogen-containing active regions based on superlattices grown on GaAs substrates are presented. Active regions based on alternating InAs and GaAsN layers were fabricated by molecular−beam epitaxy using a nitrogen plasma source. Based on the XRD analysis, the thicknesses
and average composition of superlattice layers are estimated. The study of dark-field images obtained by transmission electron microscopy showed the presence of interdiffusion of InAs into GaAsN. The results of a study of the photoluminescence and electroluminescence spectra at different pump levels are presented.
Efficient electroluminescence is demonstrated near 1150 nm with a full width at half-maximum of about 90 meV.
Рост гексагонального нитрида бора (hBN) на подложках карбида кремния методом сублимации
Authors: Мохов Е.Н. , Давыдов В.Ю. , Смирнов А.Н. , Нагалюк С.С.
Published: December 2022

Продемонстрирована возможность роста с использованием метода высокотемпературной сублимации из газовой фазы гексагонального нитрида бора (hBN) высокого структурного совершенства на подложках гексагонального карбида кремния (SiC). Полученные результаты указывают на перспективность использования данного метода для формирования в ходе одного технологического процесса высококачественных гетероструктур hBN/SiC большой площади, которые имеют высокий потенциал для приборных применений. Ключевые слова: гексагональный нитрид бора, высокотемпературная сублимация из газовой фазы, рамановская спектроскопия, фотолюминесценция.
Поверхностная кристаллизация аморфных микропроводов состава Fe-=SUB=-73.8-=/SUB=-Si-=SUB=-13-=/SUB=-B-=SUB=-9.1-=/SUB=-Cu-=SUB=-1-=/SUB=-Nb-=SUB=-3.1-=/SUB=- и Fe-=SUB=-77.5-=/SUB=-Si-=SUB=-13.5-=/SUB=-B-=SUB=-9-=/SUB=-
Authors: Фукс А.А. , Абросимова Г.Е. , Аксенов О.И. , Аронин А.С.
Published: December 2022

Amorphous microwires of Fe73.8Si13B9.1Cu1Nb3.1 and Fe77.5Si13.5B9 composition fabricated by the Ulitovsky–Taylor method were studied. The samples with the glass shell removed were heated at temperatures of 753 K and 703 K for 20 minutes, afterwards, their structure was examined using X-ray diffraction. Subsequently, the thermally treated samples were chemically etched and X-ray diffraction study of the structure was again carried out. Experimental results on the predominant crystallization of near-surface regions were discussed assuming that mechanical stresses affect the nucleation and growth of nanocrystals.
Построение 2D-картин рентгеновской дифракции от модельных кристаллов-вискеров арсенида галлия
Authors: Шарков М.Д. , Прасолов Н.Д. , Левин А.А. , Брунков П.Н.
Published: December 2022

A set of GaAs whisker crystallites in the shape of hexagonal prism with the axis
along the [111] direction have been modeled as well as constructions consisting
of such prisms. For these model samples XRD patterns have been calculated.
Basing on the calculated XRD pattern analysis, a fitting configuration of prismatic
fragments has been built for an atomic array obtained with the help of applying
molecular dynamics techniques to the initial model prismatic GaAs crystallite.
Нелинейность и гармоники магнитной восприимчивости моно-ионного магнита Co-=SUP=-2+-=/SUP=- в парамагнитной области выше температуры магнитного упорядочения
Authors: Коплак О.В. , Дворецкая Е.В. , Куницына E.И. , Моргунов Р.Б.
Published: December 2022

In monoionic complexes based on Co2+ ions, the second and third harmonics of the magnetic susceptibility were found at temperatures of 2–4 K, which exceed the Néel temperature. The maxima of the second and third harmonics of the magnetic susceptibility are observed at a frequency of ~1 Hz, at which the maximum of the first harmonic is observed in a field of 3.2 kOe. An analysis of the dependences of the second and third harmonics of the magnetic susceptibility on the field and temperature showed that the nonlinearity arises as a result of the formation of a spin glass state at temperatures slightly higher than the Néel temperature. In this state, there is no long-range spin order, but there are spin clusters in the spin glass state. The spin-glass state in a compound with a Co2+ ion with a high magnetic anisotropy is unusual in that the exchange interaction is much smaller than the single-ion anisotropy energy.
Антиферродисторсионный переход и диэлектрическая релаксация в SrTiO-=SUB=-3-=/SUB=--SrMg-=SUB=-1/3-=/SUB=-Nb-=SUB=-2/3-=/SUB=-O-=SUB=-3-=/SUB=-
Authors: Смирнова Е.П. , Зайцева Н.В. , Гук Е.Г. , Сотников А.В.
Published: December 2022

Проведены диэлектрические и акустические исследования твердых растворов (1-x)SrTiO3-xSrMg1/3Nb2/3O3. Получена зависимость температуры антиферродисторсионного фазового перехода от концентрации x второй компоненты. Обнаружено подавление диэлектрической релаксации при x≤0.03 и температурах ниже температуры антиферродисторсионного перехода, а также сосуществование диэлектрической релаксации и антиферродисторсионной неустойчивости при 0.03<x≤0.15. Обсуждаются причины размытия зависимости относительной скорости звука в области перехода и особенностей взаимодействия антиферродисторсионной неустойчивости и диэлектрической подсистемы. Ключевые слова: антиферродисторсионный переход, диэлектрическая релаксация, акустические свойства.
К вопросу о деформации и разрушении пористой керамики на основе диатомита
Authors: Скворцов А.А. , Николаев В.К. , Лукьянов М.Н. , Чебенева И.Е.
Published: December 2022

The presented work is devoted to the study of deformation and destruction of porous ceramics based on diatomite. The dependences of the elastic modulus of the material on porosity were obtained by scanning electron microscopy, mechanical compression tests of samples and acoustic emission method: with a change in the porosity of the medium in the range of 20-60%, the value of the elastic modulus varied in the range from 240 to 50 MPa. It was also found that the tensile strength of the material σs changes by ~10 MPa with a change in porosity.
Исследование особенностей структуры микрокристаллического алюминия после испытаний на длительную прочность
Authors: Манохин С.С. , Бетехтин В.И. , Кадомцев А.Г. , Нарыкова М.В. , Амосова О.В. , Колобов Ю.Р. , Лазарев Д.В.
Published: December 2022

The effect of creep on changes in the structure of samples of recrystallized microcrystalline aluminum in the fracture region and at some distance from it is studied. Transmission and scanning electron microscopy have been used to study the features of the formation of a globular ultrafine-grained structure in the region of destruction with a minimum manifestation of crystallographic texture, as well as the presence of micro- and nanoporosity.
Эффективность локализации электрически инжектированных носителей заряда в квантовой яме InGaN|GaN, ограниченная объемным зарядом
Authors: Бочкарева H.И. , Шретер Ю.Г.
Published: December 2022

Механизм влияния дефектов в GaN на эффективность локализации в квантовой яме InGaN|GaN электрически инжектированных носителей заряда исследуется с помощью туннельной спектроскопии глубоких центров. Обнаружено, что зависимости квантовой эффективности и спектральной эффективности излучательной рекомбинации от прямого смещения имеют вид кривых с максимумом и горбами при смещениях, соответствующих примесным зонам центров окраски в GaN. Падение квантовой эффективности с ростом смещения сопровождается голубым сдвигом спектра излучения. Мы объясняем эти эффекты на основе модели локализации носителей в квантовой яме, учитывающей значительный вклад в туннельную проницаемость потенциальных стенок квантовой ямы ионизованных глубоких центров окраски и их перезарядки по мере возрастания прямого смещения. Ключевые слова: нитрид галлия, квантовая яма, локализация носителей заряда, туннелирование, квантовая эффективность, центры окраски.
Диаграммообразующие схемы многолучевой антенной решетки
Authors: Рязанцев Р.О. , Александрин А.М. , Ерохин А.А. , Гафаров Е.Р. , Поленга С.В. , Саломатов Ю.П. , Литинская Е.А.
Published: December 2022

The work is devoted to the study of multibeam phased array beam forming networks, based on Butler matrix and Rotman lens. The study was made with similar conditions of the same telecommunications satellite service area. The microstrip circuit pattern was developed, the amplitude and phase frequency response were investigated, arrays directional patterns for beam forming variants were calculated. Evaluation of adjacent ray overlay inside service area boundary was carried out. Conclusions about acceptability of the proposed beam forming networks were made.
Моделирование роста заостренных нитевидных нанокристаллов на маскированных подложках
Authors: Лещенко Е.Д. , Дубровский В.Г.
Published: December 2022

The formation of tapered self-catalyzed nanowires grown on reflecting substrates is studied theoretically. Within the model the nanowire radius is obtained as a function of length. The model describes the morphology of tapered nanowires. We study the influence of different growth parameters on the nanowire morphology, including the III/V flux ratio and pitch.
Температурные зависимости электрических характеристик природного пирита FеS-=SUB=-2-=/SUB=- p-типа проводимости в интервале 295-635 K
Authors: Степанов Н.П. , Грабко Г.И.
Published: December 2022

The results of the investigation of the hole nature pyrite sample FeS2 are presented. The regularities of change of their electrical properties with increasing temperature in the mode of uniform heating to 635 К are established. The results obtained are analyzed in terms of the dependence of the diffusion intensity of charge carriers from temperature and materials characteristics.
Вскипание струи перегретой воды при истечении через канал малого диаметра
Authors: Бусов К.А. , Мажейко Н.А. , Скоков В.Н.
Published: December 2022

An experimental investigation of the boiling-up dynamics of a jet of superheated water at the discharge through a short nozzle of small diameter (d=0.2 mm) has been conducted. A change in the shape of a boiling-up jet has been traced at various degrees of superheat. A complete flow opening has been established in a temperature range T=493 – 583K. The instability of a complete breakup has been revealed. On the bases of experimental data the dependence of a change of an opening jet angle on the saturation pressure has been plotted in dimensionless coordinates. Low-frequency pulsations with a power spectrum inversely proportional to the frequency (1/f - spectrum) have been found under changes of shapes of a boiling-up flow.
Оценка пространственно-поляризационной селекции антенн спутниковой навигации на основе анализа ошибки огибающей многолучевой интерференции
Authors: Ерохин А.А. , Гафаров Е.Р. , Александрин А.М. , Рязанцев Р.О. , Поленга С.В. , Саломатов Ю.П.
Published: December 2022

The paper estimates error envelopes introduced by the effect of multipath propagation in global navigation satellile systems. Based on the mathematical model of the radio path of the direct and reflected signals, the results of the multipath error envelopes for various types of navigation antennas are obtained.
Первое применение диагностики плазмы пучком тяжелых ионов для измерения потенциала плазмы при ко-инжекции высокоэнергичных нейтральных атомов в токамак ТУМАН-3М
Authors: Белокуров А.А. , Абдуллина Г.И. , Аскинази Л.Г. , Жубр Н.А. , Корнев В.А. , Лебедев С.В. , Разуменко Д.В. , Смирнов А.И. , Тукачинский А.С. , Шергин Д.А.
Published: December 2022

Heavy ion beam probe (HIBP) diagnostics on TUMAN-3M tokamak was updated to provide measurements in the regime with neutral beam injection co-directed with plasma current (co-NBI). By means of HIBP plasma potential measurements in the center of plasma were carried out. Plasma potential evolution in the discharge with L-H transition (transition to improved confinement mode) is in good agreement with the concept of negative radial electric field generation during the formation of transport barrier.
Особенности роста массивов квантовых точек InAs с низкой поверхностной плотностью методом молекулярно-пучковой эпитаксии
Authors: Блохин С.А. , Васильев А.П. , Надточий А.М. , Прасолов Н.Д. , Неведомский В.Н. , Бобров М.А. , Блохин А.А. , Кузьменков А.Г. , Малеев Н.А. , Устинов В.М.
Published: December 2022

The influence of the substrate temperature and the flux of In adatoms on the structural and optical characteristics of InAs quantum dots with a low surface density is experimentally studied. An increase in the substrate temperature under conditions of a high flux of In adatoms promotes an increase in their surface migration and a certain decrease in the density of the array of quantum dots (down to ~(1-2) 10^10 cm^-2), however, in this case, a significant short-wave shift of the photoluminescence spectrum is observed, despite side points. A decrease in the incident flux of In adatoms at optimum substrate temperatures makes it possible to reduce the dot density more efficiently (down to ~(1-2) 10^9 cm^-2).
About Non-relativistic Quantum Mechanics and Electromagnetism
Authors: Bányai Ladislaus Alexander , Bundaru Mircea
Published: December 2022

We describe here the coherent formulation of electromagnetism in the non-relativistic quantum-mechanical many-body theory of interacting charged particles. We use the mathematical frame of the field theory and its quantization in the spirit of the quantum electrodynamics (QED). This is necessary because a manifold of misinterpretations emerged especially regarding the magnetic field and gauge invariance. The situation was determined by the historical development of quantum mechanics, starting from the Schrödinger equation of a single particle in the presence of given electromagnetic fields, followed by the many-body theories of many charged identical particles having just Coulomb interactions. Our approach to the non-relativistic QED emphasizes the role of the gauge-invariance and of the external fields. We develop further the approximation of this theory allowing a closed description of the interacting charged particles without photons. The resulting Hamiltonian coincides with the quantized version of the Darwin Hamiltonian containing besides the Coulomb also a current-current diamagnetic interaction. We show on some examples the importance of this extension of the many-body theory.
Assessing the Quality of the World Health Organization’s Skin NTDs App as a Training Tool in Ghana and Kenya: Protocol for a Cross-sectional Study
Authors: Frej Asmae , Cano Mireia , Ruiz-Postigo José A , Macharia Paul , Phillips Richard Odame , Amoako Yaw Ampem , Carrion Carme
Published: December 2022

Background

Neglected tropical diseases (NTDs) affect over 1.5 billion people worldwide, the majority of them belonging to impoverished populations in low- and middle-income countries (LMICs). Skin NTDs are a subgroup of NTDs that manifest primarily as skin lesions. The diagnosis and treatment of skin NTDs entail considerable resources, including trained personnel and financial backing. Many interventions are being launched and evaluated, particularly mobile health (mHealth) interventions, such as Skin NTDs App, a training and decision support tool offered by the World Health Organization (WHO) for frontline health workers (FHWs). As most digital health guidelines prioritize the thorough evaluation of mHealth interventions, it is essential to conduct a rigorous and validated assessment of Skin NTDs App.

Objective

We aim to assess the quality of version 3 of Skin NTDs App, developed for the WHO by Universal Doctor and Netherlands Leprosy Relief as a training and decision support tool for FHWs.

Methods

A cross-sectional study will be conducted in 2 LMICs: Ghana and Kenya. We will use snowball sampling recruitment to select 48 participants from the target population of all FHWs dealing with skin NTDs. The sample group of FHWs will be asked to download and use Skin NTDs App for at least 5 days before answering a web-based survey containing demographic variables and the user Mobile App Rating Scale (uMARS) questionnaire. A semistructured interview will then be conducted. Quantitative and qualitative data will be analyzed using SPSS (version 25; SPSS Inc), with statistical significance for all tests set at a 95% CI and P≤.05 considered significant. Data derived from the semistructured interviews will be clustered in themes and coded to enable analysis of various dimensions using ATLAS.ti.

Results

The estimated completion date of the study is in the third quarter of 2022. The results are expected to show that Skin NTDs App version 3 has a good reported user experience, as assessed using the uMARS scale. No differences are expected to be found, except for those related to experience in dermatology and the use of mobile technology that could influence the final score. Semistructured interviews are expected to complete the results obtained on the uMARS scale. Moreover, they will be the previous step before assessing other aspects of the app, such as its efficiency and how it should be disseminated or implemented.

Conclusions

This study is the first step in a qualitative and quantitative assessment of Skin NTDs App as a training and support tool for FHWs diagnosing and managing skin NTDs. Our results will serve to improve future versions of the App.

International Registered Report Identifier (IRRID)

PRR1-10.2196/39393
Presence of the Neotropical Otter in the Cubatão do Sul River, Santa Catarina, Brazil
Authors: Carvalho Junior Oldemar de Oliveira
Published: December 2022

This work represents an analysis of the presence of Lontra longicaudis in the Cubatão River, Santa Catarina, Brazil. The influence that temperature and precipitation can have on the collection of excrements of the species is examined. The composition of the diet is determined by the collected excrement. From 2006 to 2007, 255 feces were collected using rafting boats in the study area, which is characterized by strong rapids and waterfalls. Precipitation and temperature data from January 2006 to September 2007 were obtained. The Kruskal-Wallis test was used to determine the seasonal difference between samples of items consumed by otter. The Chi-square test was used to evaluate the difference between the collected and expected data regarding the temperature and precipitation. The relationship between average monthly temperature and rainfall, and the frequency of occurrence of food items was evaluated using Spearman coefficient. The fish group was the most abundant in the otters diet, representing 70% of the total, followed by crustaceans (23%) and mammals (4%). Birds accounted for 3%. Differences in items consumed by otters in the Cubatão do Sul River were observed between the hottest and coldest months. The number of excrement collected was lower than expected during rainier periods, demonstrating the care that must be taken in research planning. The presence of the otter in the Cubatão River basin can be important for both environmental and economic management of the region, especially as it represents an important source of water for thousands of people.
The Early History of Children from Families Adopting Older Children
Authors: Escobar Larissa dos Santos , Pretto Zuleica
Published: December 2022

Adoption, especially that of older children, still involves barriers and prejudices, being considered a challenge for children, their families and the State. The research presented in this article aimed to find out how families that adopt older children relate to the child's previous life history in the new family configuration. In methodological terms, the study was defined as qualitative and exploratory and had semi-structured interviews, submitted to a content analysis. The results were discussed using five analytical categories that addressed the families' experiences, feelings and conceptions about family life and their children's past history. The picture of suffering involved in situations of violation of children's rights, family destitution, institutionalization and the challenges present in the process of building a new family configuration were observed. Respondents understand the importance of welcoming, recognizing and dialoguing about the child's past history, both for the child's development and for the formation of family bonds, even if it is painful for everyone and that it is not always easy to implement. With a perspective of overcoming, no family understands the consequences of the past as irreparable for the future of children, recognizing themselves as vehicles for a new beginning for their children.
La Ciudad Universitaria de Nuevo León en 1958, sus primeros habitantes
Authors: Acosta Badillo Susana Julieth
Published: December 2022

La idea de una Ciudad Universitaria en Nuevo León se contempló desde el origen de la propia Universidad Autónoma de Nuevo León en 1933, sin llegar a resultado alguno. Entre 1941 y 1943 el ideal se retomó, sin embargo no se comenzó a planear sino hasta 1950, para inaugurarse finalmente en 1958. Los años de retraso obligaron a sus escuelas y facultades a peregrinar entre viejas casonas en el centro de la ciudad de Monterrey, espacios que resultaban inadecuados para una formación profesional moderna, pero que no obstante abonaron a la construcción de una comunidad universitaria. El presente artículo explora la planificación de la que fue considerada en su tiempo la segunda Ciudad Universitaria de México, con especial enfoque en la construcción e inauguración de los dos primeros edificios para facultades y lo que ello significó para sus respectivas comunidades estudiantiles, así como los procesos de apropiación durante el primer año de actividad del campus.
Los coronavirus: transmisión interespecie y potencial zoonótico
Authors: López-Pérez Teresa De Jesús , Anacleto-Santos Jhony Anacleto-Santos , Carrasco-Ramírez Elba , Rivera-Fernández Norma
Published: December 2022

Los coronavirus afectan la salud humana y a una amplia variedad de especies animales domésticas como ganado bovino y porcino, animales silvestres, aves e incluso animales de compañía. Estos virus tienen afinidad por diferentes tejidos, principalmente por los del tracto respiratorio y gastrointestinal en la mayoría de los mamíferos. Se reportan infecciones con coronavirus incluso en especies anfibias. Los brotes de coronavirus en las últimas décadas y en la pandemia (2019-2022) han sido de origen zoonótico debido principalmente a la naturaleza variable del genoma de arn que poseen estos virus, así como de otras interacciones virus-receptor, y a la diversidad genética viral facilitada por recombinación homóloga frecuente. El sars-cov-2 se originó en civetas y pangolines, y en una especie reservoria que también se identificó en los brotes de sars-cov y mers-cov: el murciélago. Estos antecedentes advierten a la comunidad científica de realizar un monitoreo continuo de las variantes virales de los coronavirus.