bluuebunny/crossref_metadata_2025 huggingface dataset:
THE MULTIMODAL СONTENT OF THE FIRST GERMAN LANGUAGE TEACHING MANUALS
Authors:   St. Petersburg State University, Baeva Galina A.
Published: January 2023

The information explosion caused by the invention of printing in the middle of the 15th century, the Reformation and Luther’s activities led to the elevation of the German language to the level of “high” languages in which it was possible to teach in German schools in addition to the three sacred languages. For the first time, the German language became not only an object of description, but also an object of instruction in German schools, where, along with the abacus and the basics of the Law of God, they taught reading and writing in their native German. There is a need not only for linguistic comprehension of the German language, but also for its introduction into teaching. The communicative practices presented in the first literacy manuals in German reflect a multimodal process carried out through three main information channels — verbal, prosodic and visual. The article describes the formation of the process of integrating verbal information, focused primarily on the teacher, with prosodic (syllabification, onomatopoeia and sound production, etc.) and non-verbal, visual, information contained in tables, graphics and pictures (taking into account gestures, facial expressions, etc.), designed for the student. The objectives of the article are to describe the functional interaction and the invasive potential of verbal, visual, sound and graphic signs in the process of communication when teaching literacy in German. The content of the analyzed literacy manuals of the 16th–17th centuries, compiled by Valentin Ikelzamer, Fabian Frank, Peter Jordan, Ortolph Fuchsberger, etc., demonstrates the dynamics of the development of this type of text from monomodal verbal manuals, through the inclusion of tables and diagrams in the verbal text to the integrative embedding of a picture (image) in a verbal context and the “centric” inclusion of a staged image, in which the leading role is given to the image, and the verbal part acts as an explanation.
MULTIMODAL METAPHORS IN THE EARLY MODERN TIME
Authors:   Kuban State University, Bychkov Sergey S.
Published: January 2023

This article discusses the approaches to the phenomenon of multimodality in the works of Russian and foreign linguists. Examples are given of studies of multimodality on the material of modern texts, as well as on the historical material. Despite a certain consolidation of approaches to multimodality, the terms “mode” and “modality” still require clarification. The study of multimodality opens new perspectives for analyzing conceptual metaphors. This article examines the essence of multimodal metaphor and how it differs from monomodal metaphor. On the example of several Early Modern multimodal metaphors we illustrate the influence of the social and cultural context, the specificity of the process of metaphorization, historical continuity and the universal nature of the conceptual metaphor. These theoretical positions are illustrated on the example of the metaphor “the world is a theatre”, which dominated the worldview paradigm of the 15th–18th centuries. Three aspects of the metaphor of theatre are described — structural, ontological and performative aspect. A special manifestation of this metaphor is the tradition of naming non-fiction texts of various topics with the Latin lexeme theatrum or its equivalents in the national languages. The diversity of manifestations of the metaphor “the world is a theatre” in different modes raises the question of the need to consider this phenomenon as a blended space in which individual realizations of the metaphor form a special conceptual unity, complementing each other and exerting mutual influence. In conclusion, we state that the analysis of conceptual metaphor from the perspective of multimodality is productive and outline the difficulties that arise when studying the conceptual metaphors from distant periods.
WAYS OF INTERACTION OF ILLUSTRATIONS AND TEXT IN THE POPULAR SCIENCE DESCRIPTION OF GERMAN CRAFTS
Authors:   St. Petersburg State University, Dmitrieva Maria N.
Published: January 2023

The paper focuses on the mechanisms of interaction between graphic images and text descriptions, including historical and cultural information about ancient German crafts. The purpose of the article is to show the different types of interrelation of graphic images and verbal text. The concept of multimodality and discourse analysis serves as the theoretical and methodological basis of the research; selected works of recent years devoted to a given problem are presented in an overview. The methods of discourse analysis allow us to implement an extended approach to the discussion of different types of graphic sign systems and mechanisms of their interaction. The research material is a book about German crafts related to national architecture and construction technologies. Three ways of image and text interaction were identified. The first, the simplest, covers cases when the caption directly displays what is shown in the figure. In such cases, the image serves to clarify and concretize the text accompaniment. The second extensive group consists of examples when the text contains related information about the history of craft, the degree and causes of its prevalence in a certain area, etc. The third group consists of a few examples when the illustration is given an exclusively decorative function, and the text located next to it does not reveal a direct connection with the image. The three selected groups are nothing more than a research technique. In general, the image and text appear in the book as a holistic, communicatively indivisible unity.
FUNCTIONS OF A POETIC TEXT AS A COMMENTARY ON AN ENGRAVING OF THE 16TH CENTURY (ON THE EXAMPLE OF THE BOOK “DESCRIPTION OF ALL ESTATES AND CRAFTS ON EARTH” (“EYGENTLICHE BESCHREIBUNG ALLER STÄNDE AUFF ERDEN”) BY JOST AMMANN AND HANS SACHS, 1568)
Authors:   St. Petersburg State University, Nifontova Daria J.
Published: January 2023

This article is devoted to study of the main functions of a poetic text written by the famous German poet Hans Sachs, as a commentary on the engravings of the Swiss woodcut and illustrator Jost Ammann. Published against the background of the Reformation, in the era of the development of printing and the rise of interest in various types of information, the collection of engravings “Description of all classes and crafts on Earth” (“Eygentliche Beschreibung Aller Stände auff Erden”) was aimed at expanding and systematizing the reader’s knowledge about the structure of society. The main functions are nominative (the name of the depicted object), informational (reporting information about a representative of a particular profession or class in society) and aesthetic (poetic commentary makes a significant contribution to the aesthetic value of the collection). A distinctive feature of the information function is its implementation: the main way of presenting information is typification — the representation of the object in the most generalized, recognizable form, indicating information that meets the receptive capabilities of the reader. Additional features include a text pre-organization function (the role of the title as an element equally related to both the image and the text, pre-orients the reader), mnemonic or embedding function (duplication of information from the title in the main text in order to simplify its perception) and advertising (ensuring the popularity of a collection of engravings by attracting a well-known poet as a co-author). The article consists of introduction, main part and conclusion.
MULTIMODALITY IN MIDDLE AGES: DECIPHERING OLD PROVERBS’ IMAGE TEXT
Authors:   Moscow State Linguistic University, Tsvetaeva Elena N. , Pankratieva Elena S. ,   Moscow State Linguistic University
Published: January 2023

The carnivalesque late Middle Ages, with passion for proverbs running through all its language strata and love for their visualisation not only through fine arts, but in book artwork as well, are a unique source of research data for the rapidly growing field of multimodality studies. Although verbal and iconic signs are different in nature, they supplement each other and interweave under the book covers of the time to form a semantic and pragmatic unity to influence the receptor holistically. It is worth noting here that the meaning of the “proverb” term is contingent in this context, as it was used by the philosophers, scientists, and literary figures of the time to refer to almost all manner of set phrases. Drawing from a variety of texts belonging to different genres, the article analyses the specifics of how the language and image components interact to create a hybrid semiotic complex. Studying the specifics of semiotic hybridisation as observed in the medieval texts is key to the further development of the historical phraseology as well, especially when it pertains to the issue of visualising persistent lexical complexes. Said significance derives from the fact that the so-called visualised phraseology may serve as a source for the historical phraseology research that would complement the phraseographical data, phraseology found in the literary work, and research insights. This research shows, on the one hand, how text and image of the early stages of the people’s culture and language development become one, and on the other hand how a set lexical unit and the image accompanying it synergise in a given hybrid textual space on both semantic and cognitive levels. Based on historical data, the article showcases how multimodality has become a complex semiotic phenomenon intrinsic to any society employing not only language, but other complex systems of signs as well. A complex lexico-semantic nature of the special semantics linguistic units being visualised is one of the key factors in rendering the interaction between these two modalities unique.
Dispersed media: scattering of sound waves, stratification in swirling flows and sedimentation processes
Authors:   Mavlyutov Institute of Mechanics UFRC RAS, Ufa, Russia, Urmancheev S.F.
Published: January 2023

A brief review on three problems from the multiphase media mechanics area related to the study of the dynamic behavior of disperse systems under various conditions and methods of interaction with external fields or the environment is presented. The problems are an integral part of the scientific project “Hydrodynamic effects in multiphase and thermoviscous media under wave and thermal effects”. The review is carried out in the context of the vector of development of modern research in the relevant areas. As a part of solving the problem of acoustic wave scattering by a set of spherical bubbles or drops, taking into account their sound permeability, the fast multipole method was developed to expand the possibilities of its application in the considered cases. On the basis of addition theorems for spherical wave functions, a new formula for the total scattering cross section for a set of interacting sound-permeable spheres arbitrarily located in space is obtained. An important aspect of the research was the estimation of the region in the parameter space of the problem, in which the effects of multiple scattering are significant. The second problem is related to mathematical modeling of a swirling turbulent flow containing particles of a dispersed phase. For numerical studies of temperature stratification in a vortex tube, an algorithm and a computer code were created using an orthogonalized finite-volume mesh with separation of the near-wall layer. A number of parametric studies have been carried out, in particular, the dependence of the temperature of the outgoing air in the cold diaphragm channel depending on the diameter of the diaphragm has been considered. In order to increase the efficiency of geological exploration in solving the third problem for describing the process of magmatic ore formation, a system of equations based on the methods of mechanics of multiphase media and thermohydrodynamics is proposed. The mathematical model provides for the heat exchange of the magmatic melt flow with the surrounding host rocks, as well as the release of heavy and light fractions from basaltic magma during its cooling. The results obtained in the course of the computational experiment indicate the possibility of a periodically inhomogeneous nature of the distribution of ore-forming fractions.
“Operação Sanduíche”
Authors: Carraro Wendy Beatriz Witt Haddad , Carraro Ivy Lima Prietto Von Kurrle
Published: January 2023

Este estudo objetivou descrever a aplicação de uma metodologia ativa de aprendizagem para futuros contadores gerenciais, por meio do experimento “Operação Sanduíche”, aplicado na disciplina de Tópicos Especiais de Contabilidade Gerencial, do último semestre de Ciências Contábeis, entre 2018 e 2019. Consideraram-se as seguintes etapas da Contabilidade Gerencial: planejamento e orçamento; produção e cálculo do custo e da precificação de sanduíches naturais; venda; e análise de desempenho. As bases foram a prática e a análise de percepções, mediante levantamento junto aos estudantes, os quais evidenciaram ser possível desenvolver competências e habilidades quanto aos aspectos contábil, financeiro, de influenciar pessoas, negócios, liderança, ética, integridade e profissionalismo; e reduzir a lacuna entre a teoria e o universo profissional. Este estudo apresentou uma metodologia ativa de aprendizagem para ser utilizada na formação de contadores gerenciais, possibilitando que o docente aplique atividades que aproximem o estudante do mundo prático e profissional.
Tecnologia Digital de Comunicação e Informação (TDIC) e suas possibilidades na educação durante a pandemia de Covid-19
Authors: Rocha Rita de Cássia Machado da , Corrêa Roberta Pires , Ferreira Roberto Rodrigues
Published: January 2023

As medidas adotadas devido à pandemia de Covid-19 intensificaram um processo que já havia se iniciado: a utilização das tecnologias digitais de informação e comunicação (TDIC) para ensinar no século XXI. No presente trabalho elencamos e indicamos tecnologias de utilização gratuitas no cotidiano para práticas de ensino em ambientes virtuais. Utilizamos como base teórica autores que abordam a educação em rede, rede social para educação e a inteligência coletiva para refletir os desafios encontrados pelos professores durante o distanciamento social. Realizamos uma revisão bibliográfica e elucidamos, a partir da análise das tecnologias, a importância das TDIC, desde a escolha correta até a promoção e construção de um ambiente de trocas do conhecimento no ambiente virtual. Assim, professor e estudante, a partir da mediação, do diálogo, têm a possibilidade de juntos poder superar as dificuldades impostas pelo isolamento social à educação.
Jardim de infância para a vida toda
Authors: Pereira Luciene
Published: January 2023

Tendo em vista os novos desafios que se impõem para ensinar no século XXI, o objetivo deste trabalho é apresentar uma prática pedagógica que prioriza a criatividade e o protagonismo estudantil, por meio de atividades de leitura literária. Os trabalhos estão centrados na leitura do livro intitulado A mala de Hana: uma história real. A prática pedagógica desenvolvida partiu de uma pesquisa exploratória, realizando-se revisão bibliográfica, com o levantamento de publicações científicas e de boas práticas no que diz respeito a estratégias de formação de leitor. Discute-se ao longo do trabalho a importância da promoção de estratégias criativas para uma educação inovadora, a fim de que os estudantes realizem atividades de leitura literária significativas, no espaço da sala de aula, de forma a se tornarem cidadãos críticos, criativos e participativos. Concluiu-se que a abordagem pedagógica permitiu boas práticas de fomento à leitura literária junto aos estudantes da educação básica.
Habilidades preditoras de leitura em escolares em anos iniciais de alfabetização em tempos de pandemia
Authors: Santana Mariana Garrido , Capellini Simone Aparecida , Germano Giseli Donadon
Published: January 2023

O objetivo foi caracterizar e comparar as habilidades preditoras de leitura de escolares do 1º e 2º ano do Ensino fundamental I em tempos de pandemia. Trata-se de uma pesquisa de abordagem quantitativa. Participaram deste estudo 40 escolares na faixa etária de 6 a 7 anos de idade, divididos em grupos (GI: 20 escolares do 1º e 2º ano) e GII (20 escolares, pareados com GI em relação a ano escolar e idade cronológica). Os escolares foram submetidos ao Protocolo de Identificação Precoce dos Problemas de Leitura. Os resultados indicaram diferença para a maioria das provas, exceto memória operacional fonológica, Leitura Silenciosa e Compreensão Auditiva de sentenças a partir de Figuras, antes e durante a Pandemia. Os escolares tiveram durante a pandemia dificuldades para as habilidades preditoras de leitura, devido a não vivenciarem os conteúdos didáticos para a aquisição da leitura.
Cidadania cibernética
Authors: Oliveira Marcos Aurelio Guedes de , Schwether Natalia Diniz , Casalunga Fernando Henrique
Published: January 2023

A Era da Informação trouxe consigo novos mecanismos de sociabilidade, bem como grandes desafios à cidadania. Nesse cenário, é fulcral a ação dos Estados enquanto propositores de políticas públicas, sendo a educação um importante componente do alicerce central. Em vista disso, a partir de um conjunto de aulas teórico/práticas, empregamos o método lúdico pedagógico em um projeto de extensão inovador que tem por objetivo fortalecer o exercício da cidadania cibernética em jovens estudantes. Na medida em que contribui para a identificação dos participantes de sua condição enquanto cidadãos digitais, a ação extensionista projeta uma nova realidade social, expandindo os conhecimentos adquiridos na universidade à comunidade. Estamos certos de que a indissociabilidade entre pesquisa, ensino e extensão impulsiona a produção de conhecimentos, na medida em que estabelece um vínculo de confiança entre acadêmicos e sociedade civil, em um esforço conjunto para transformar a realidade dos cidadãos.
Reinventando a roda
Authors: Fernández Silvina Julia , Delgado Adriana Patrício
Published: January 2023

Com base no relato de experiência, esse trabalho tem por objetivo descrever, analisar e sistematizar, através de uma abordagem qualitativa, as ações e os arranjos institucionais desenvolvidos pela coordenação do curso de Pedagogia da UFRJ no período de março de 2020 a outubro de 2021. Este período, de características muito singulares por causa dos efeitos da pandemia de Covid 19, impôs à coordenação uma mudança na rotina organizacional, de forma que certas ações precisaram assumir outro formato e, paralelamente, novas ações foram implementadas, frente às demandas contextuais e sociais, conduzidas por diversas instâncias organizacionais participativas, como: Comissão de Orientação e Acompanhamento Acadêmico, Núcleo de Acompanhamento e Orientação aos/às Estudantes com Deficiência, Grupos de Orientação Pedagógica, Núcleo de Planejamento Pedagógico das Licenciaturas, que visaram manter a filiação estudantil promovendo a sua permanência e engajamento através de uma coordenação pedagógica orientada pela gestão democrática em defesa do direito à educação pública. Os resultados apontam que a aposta numa gestão colaborativa foi o alicerce para a manutenção e reinvenção da Universidade neste período pandêmico, colaborando com a criação de vínculos entre os sujeitos e a promoção da coesão curricular.
Adaptação e evidências de validação do Questionário de Satisfação com a Experiência Acadêmica Remota (QSEA-R)
Authors: Pereira-Neto Lauro Lopes , Barros Torres Faria Ana Amália Gomes , Almeida Leandro Silva
Published: January 2023

O presente estudo investigou a evidência de validade da adaptação à realidade pandêmica do Questionário de Satisfação com a Experiência Acadêmica (QSEA-R). Participaram do estudo de abordagem quantitativa 365 estudantes matriculados no ensino remoto emergencial (ERE) dos cursos superiores do Instituto Federal de Alagoas. Os resultados confirmaram as qualidades métricas em termos de validade da estrutura interna e de fidedignidade do questionário. A pandemia da COVID-19 intensificou desigualdades e agravou a condição de vulnerabilidade social dos estudantes, que, apesar de relatarem ausência de uma infraestrutura digital satisfatória para o estudo remoto, avaliaram como satisfatória a implantação do ERE, acreditavam na integração das experiências vivenciadas no contexto pandêmico e expressaram perspectivas positivas de empregabilidade e êxito profissional. Concluiu-se que o QSEA-R representa um importante instrumento preditor da (in)satisfação acadêmica, contribuindo, desta forma, na avaliação da eficácia institucional.
A Review on the Natural Components Applied as Lead Compounds
for Potential Multi-target Anti-AD Theranostic Agents
Authors: Kou Xiaodi , Shi Xuli , Pang Zi , Yang Aihong , Shen Rui , Zhao Lihua
Published: January 2023

Alzheimer's disease (AD) is a neurodegenerative disease that seriously affects
the health and quality of life of the elderly. Its pathogenesis is very complex and there is
still a lack of effective clinical drugs to treat or control the development of AD. Studies
have shown that β-amyloid (Aβ) deposition, tau protein hyperphosphorylation, reduced
levels of brain cholinergic transmitters, and oxidative stress are the main causes of AD.
Furthermore, recent studies showed that metal dyshomeostasis could relate to all the
above pathogenesis of AD and was a key factor in the development of AD. Natural compounds
and their derivatives have multi-target therapeutic effects on AD, and they also
have the advantages of low toxicity, and low cost, which are important directions for anti-
AD drugs. Meanwhile, early detection may play an important role in preventing the development
of AD. The concept of “theranostic agent” combining molecular imaging
probes and therapeutic drugs has emerged in recent years. Fluorescence imaging has
been widely studied and applied because of its non-invasive, high resolution, high sensitivity,
rapid imaging, and low cost. However, at present, most of the research methods in
this field use individual therapeutic or diagnostic reagents, which is not conducive to exploring
the optimal treatment time window and drug efficacy. Therefore, this work reviewed
the natural compounds and their derivatives which all have been studied for both
the in vitro and in vivo therapeutic and diagnostic anti-AD activities. At last, structure
and activity relationship (SAR) was discussed and potential AD theranostic natural
agents were put forwarded to provide a more detailed theoretical basis for the further development
of drugs with diagnostic and therapeutic effects in AD.
Discoidin Domain Receptor 1 Inhibitors: Advances and Future Directions
for Novel Therapeutics with Aid of DNA Encoded Library Screens and Artificial
Intelligence
Authors: Sanawar Rahul , Sahayasheela Vinodh J. , Sarath Praseetha , Dan Vipin Mohan
Published: January 2023

Discoidin domain receptor (DDR) 1, a collagen binding receptor kinase, is an intensively
researched therapeutic target for cancer, fibrosis and other diseases. The majority of early known
DDR1 inhibitors targeted the ATP binding pocket of this enzyme that shares structural similarities
with other kinase pockets across the biological system. This structural similarity of DDR1 kinase
with other protein kinases often leads to “off target “toxicity issues. Understanding of uniqueness in
DDR:ATP–phosphate-binding loop (P-loop), DNA encoded library screen, structure-guided optimization
studies, and machine learning drug design platforms that come under the umbrella of artificial
intelligence has led to the discovery of a new array of inhibitors that are highly selective for DDR1
over DDR2 and other similar kinases. Most of the drug discovery platforms concentrated on the
ATP binding region of DDR1 kinase and never looked beyond this region for novel therapeutic options.
Recent findings have disclosed the kinase-independent functions of DDR1 in immune exclusion,
which resides in the extracellular collagen-binding domain, thus opening avenues for the development
of inhibitors that veer away from targeting ATP binding pockets. This recent understanding
of the functional modalities of DDR1 opens the complexity of targeting this transmembrane protein
as per its functional prominence in the respective disease and thus demands the development of
specific novel therapeutics. The perspective gives a short overview of recent developments of
DDR1 inhibitors with the aid of the latest technologies, future directions for therapeutic development,
and possibility of combinational therapeutic treatments to completely disengage functions of
DDR1.
Digital marketing on Gojek consumer loyalty
Authors: Putra I Komang Mahayana , Sanjaya Ida Bagus , Wirga I Wayan , Gede I Gusti Ketut , Sukarta I Wayan
Published: January 2023

Consumer loyalty is the customer's willingness always to use the company's products in the long term, use them exclusively, and recommend the company's products to friends or colleagues. This study aims to determine the effect of digital marketing on Gojek’s consumer loyalty. The sample in this study was Gojek consumers in Denpasar City. Determination of the sample in this study using a non-probability sampling method. The number of samples taken was 112 people. Collecting data using questionnaires. Data were analyzed using multiple linear regression analysis techniques. The results of this study indicate that digital marketing has a positive and significant effect on consumer loyalty.
Mini Electrode Based on Chitosan-Activated Carbon Membrane for Detection of Paracetamol in Herbal Medicine
Authors:   Department of Chemistry, Brawijaya University, Jl. Veteran 01, Malang, 65145, Indonesia, Mulyasuryani Ani , Triandi Rachmat ,   Department of Chemistry, Brawijaya University, Jl. Veteran 01, Malang, 65145, Indonesia, Abidin Zainul ,   Department of Chemistry, Brawijaya University, Jl. Veteran 01, Malang, 65145, Indonesia
Published: January 2023

A tube type mini electrode has been made to detect paracetamol levels in herbal medicine, the electrode is made of a glass tube with a diameter of 0.7 cm, a length of 3 cm. As the membrane is a mixture of chitosan, activated carbon from rice husk, and cetyl trimethyl ammonium (CTA)-paracetamol. The internal solution is a standard solution of 0.01 M paracetamol in a solution of phosphoric acid pH 2. The average sensitivity of the paracetamol sensor is (22.60 ± 0.01) mV/decade in a linear concentration range of 10-6 – 5x10-3 M, with an average recovery of (90.6 ± 0.5) %. Paracetamol sensor electrodes can be applied to samples of herbal medicine on the market, with an average error of (9.4 ± 0.1) %.
Study of Cu Recovery Comparison of Fresh, Stockpiled, and Mixed Ores Processing in Batu Hijau Mine – Sumbawa Island, Indonesia
Authors:   Faculty of Mathematics and Natural Sciences, University of Mataram, Hadi Surya , D. Syakti Agung ,   Faculty of Marine Science and Fisheries, Raja Ali Haji Maritime University, S. Agustawijaya Didik ,   Faculty of Engineering, University of Mataram, D. Silviani Wahyu ,   Centre for Science and Technology, State Islamic University of Raden Mas Said, Pramono Karel ,   PT Amman Mineral Nusa Tenggara, Anungstri Rissa ,   PT Amman Mineral Nusa Tenggara, Waworuntu Jorina ,   PT Amman Mineral Nusa Tenggara
Published: January 2023

Batu Hijau mine is one of the mining areas in Indonesia that have been operated for 20 years. The main concentrate product in Batu Hijau contains the primary minerals copper (Cu) and gold (Au). However, the mine is not only processing the fresh mined ore but also store the low-grade ore in the stockpile. Therefore, this study compares the Cu recovery in different ore stockpile processing on and changes in the concentration of dissolved Cu in the tailings that potentially contaminated the environment. Chemical analysis of solid and dissolved Cu uses standard methods by strictly carrying out quality assurance and quality control (QA/QC) procedures to ensure the resulting data has high validity. The results showed that there is a slight increase in Cu’s solubility in liquid fraction of tailings and the recovery decrease when ores were processed from stockpiles. However, the recovery reduction is anticipated by flotation with controlled potential sulphidisation (CPS) using sodium hydrosulphide (NaHS). Besides, the CPS also ensure that only small amount of dissolved Cu that dumped in the tailings. Hence, the dissolved Cu concentration can be monitories to reduce the possible impact on the environment.
Studi Perencanaan Embung sebagai Upaya Pengendalian Banjir Sungai Kemuning Kabupaten Sampang Madura Provinsi Jawa Timur
Authors: Aditiya Achmad Rizkiawan , Dermawan Very , Asmaranto Runi
Published: January 2023

Embung merupakan bangunan air yang berfungsi menampung air hujan dan air limpasan. SungaiiKemuning yang berlokasikan di Kabupaten Sampang, Madura dengan panjang sungai utama kurang lebih 58 km tiap tahunnya saat musim hujan tidak dapat menampung debit banjir yang terjadi dan juga mengalami kekeringan pada saat musing kemarau. Pembangunan embung diharapkan mampu menahan air banjir untuk mengurangi volume debit air yang mengalir dan dapat digunakan di saat musim kemarau terjadi. Pada perencanaan pelimpah direncanakan 3 lokasi embung pada Sungai Kemuning. Tujuanistudi iniiadalah untuk mengetahui besar debit banjir rancangan sungai Kemuning serta pengaruh adanya pembangunan embung terhadap besar reduksi banjir yang terjadi. Perhitungan debit banjir rancangan menggunakan metode  Nakayasu. Analisa menggunakan aplikasi HEC-RAS 6.2 dengan menggunakan debit banjir Q25th. Menghitung reduksi dengan adanya perencanaan embung pada sungai Kemuning. Hasil analisa debit banjir rancangan Q25th pada Embung Daleman didapatkan sebesar 255,102 m3/dt, pada Embung Rohayu sebesar 353,868 m3/dt, dan pada Embung Komis sebesar 344,046 m3/dt. Perencanaan 3 embung pada studi ini mereduksi banjir sebesar 17,79% berdasarkan penampang yang melimpas dan 4,85% berdasarkan debit yang terjadi.
Retarding basin is a water structure that functions to collect rainwater and runoff water. The Kemuning River which is located in Sampang Regency, Madura, with the main river length of approximately 58 km, every year during the rainy season cannot accommodate the flood discharge but drought during the dry season. The construction of the retarding basin is expected to be able to reduce the volume of flood discharge and also can be used on dry season. It is planned to have 3 locations of retarding basins on the Kemuning River. Calculation of design flood discharge using Nakayasu method. The Q25th design flood discharge at Daleman was 255.102 m3/s, at Rohayu was 353.868 m3/s, and at Komis was 344.046 m3/s. Analysis using the HEC-RAS 6.2 application of Q25th flood discharge. The highest water depht in the downstream Kemuning River is 2.15 m on the left and 1.83 m on the right cross-section. The planning of 3 retarding basins has a flood reduction of 17.79% based on the overflow section and 4.85% based on previous flood design discharge.
Sector construcción y renta per cápita nicaragüense: una explicación econométrica
Authors:   UNAN León, Tercero Lola Leuvad del Carmen , Avilés Peralta Yader Alberto ,   UNAN León, Mayorga Centeno Dunieckse Berenice ,   UNAN León
Published: January 2023

La teoría de crecimiento endógeno explica la relación de las variables renta per cápita (PIB per cápita), en relación al sector de construcción de edificaciones privadas, incorporado este enfoque al análisis nicaragüense, a través de los asegurados INSS, área efectivamente construida e importaciones por unidad de capital para la construcción. Durante el periodo 2006-2019 el PIB per cápita nicaragüense presentó tendencia creciente, así mismo los asegurados INSS del sector, con leve inflexión a la baja en el 2009, en cambio las áreas efectivamente construidas de edificaciones privadas presentan fluctuaciones con caída sustancial en 2009, 2010 y 2018. Por otro lado, las importaciones por unidad de capital para la construcción reflejan una contracción en 2009, posteriormente reflejó tendencia creciente, exceptuando 2018. La estimación econométrica identifica la tipología de estudio con enfoque cuantitativo, de alcance explicativo, evidenciando los postulados de las teorías de referencia, siendo relevante el resultado de la variable área efectivamente construida, la cual ejerce efecto negativo en la variable dependiente.
Study of silicon-to-silicon carbide transformation stages in the process of atomic substitution by the methods of total external X-ray reflection and X-ray diffractometry
Authors: Kukushkin S. A.  , Osipov A. V.  , Osipova E. V.  , Stozharov V. M.
Published: January 2023

X-ray diffraction and total external reflection of X-rays (X-ray reflectometry) methods were used to study the successive stages of synthesis of epitaxial SiC films on Si (100) X-ray diffraction and total external X-ray reflection (XRD) methods were used to study successive stages of synthesis of epitaxial SiC films on Si (100) surfaces, (110) and (111) surfaces by the atom substitution method. The data on the transformation evolution of (100) surfaces were studied, (110) and (111) Si, into SiC surfaces. A comparative analysis of the X-ray structural quality of the SiC layers grown on Si by the atom substitution method with the quality of SiC layers grown by Advanced Epi by the standard CVD method. A modified technique for the total outer X-ray reflection method, based on measurements of the intensity of the reflected X-rays using a special parabolic mirror. It is shown that the method of total external reflection method makes it possible to obtain important information about the degree of surface roughness of SiC layers, the evolution of their crystal structure and plasmon energy in the process of Si to SiC conversion. Keywords: total external reflection, X-ray reflectometry, silicon carbide, plasmons.
Radiation resistance of nickel-doped silicon solar cells
Authors: Ismailov K.A.  , Kenzhaev Z.T.  , Koveshnikov S.V.  , Kosbergenov E. Zh.  , Ismaylov B.K.
Published: January 2023

The influence of nickel doping on the radiation resistance of silicon solar cells in the range of γ-irradiation doses of 10^5-108 rad was studied. It is shown that diffusion doping of silicon with impurity nickel atoms increases the radiation resistance of the parameters of silicon solar cells. It is assumed that the reason for the increase in the radiation resistance of such solar cells is the existence of clusters of impurity nickel atoms, which serve as sinks for radiation defects. Keywords: silicon, γ-irradiation, nickel, cluster, solar cell.
Ab initio calculations of electronic properties and charge transfer in Zn-=SUB=-1-x-=/SUB=-Cu-=SUB=-x-=/SUB=-O with wurtzite structure
Authors: Asadov M. M.  , Mustafaeva S. N.  , Guseinova S. S.  , Lukichev V. F.
Published: January 2023

The results of studying the electronic structure and the influence of the local environment of the copper impurity on the properties and magnetic moment in supercells in Zn1-xCuxO are presented. DFT calculations were carried out in the local electron density (LDA) and generalized gradient approximation (GGA). The band structure of in Zn1-xCuxO was calculated taking into account the correction for spin polarization and the strong electronic interaction. DFT LSDA + U and SGGA + U (U is the Coulomb interaction) calculations made it possible to take into account the contributions of the 3d shells of the Zn and Cu cations to the band spectrum of in Zn1-xCuxO. The introduction of copper into the ZnO lattice leads to a change in the impurity and valence bands of in Zn1-xCuxO. In this case, the bottom of the in Zn1-xCuxO conduction band shifts towards low energies. The total density of electronic states of in Zn1-xCuxO near the Fermi level is mainly determined by the 3d states of Zn and Cu and the 2p state of oxygen. ZnO doped with copper acquires a magnetic moment. The introduction of a vacancy into a supercell in Zn1-xCuxO noticeably changes the local magnetic moment. As the copper concentration in Zn1-xCuxO (x=0, 0.01, and 0.02) increases, the conductivity of the samples in both constant and alternating current increased, and the activation energy of conduction decreased. Keywords: ZnO, copper doping, density functional theory, band calculations, electronic structure, localized magnetic moment, defect formation energies, Zn1-xCuxO, charge transfer, parameters of localized states.
Effect of surface and interfaces on longitudinal thermal transport in thin-film Si/Ge structures
Authors: Khamets A. L.  , Khaliava I. I.  , Safronov I. V.  , Filonov A. B.  , Migas D. B.
Published: January 2023

One of the main approaches to increase the thermoelectric figure of merit of materials is to reduce their thermal conductivity and, in this respect, the surface and possible interfaces play an important role in low-dimensional structures. By means of nonequilibrium molecular dynamics simulations at 300 K we investigate the longitudinal phonon thermal conductivity in Si/Ge multilayered thin-film structures having sharp interfaces and (100), (110), (111) crystallographic orientations with respect to the number of Si/Ge periods (or film thickness) and in comparison with Ge films of equivalent thickness. It is shown that as the thickness of the Si/Ge layered film decreases from ~50 to 1 nm and heat flux propagates along the [110] direction, significant phonon-surface scattering occurs for the (100) orientation, which leads to a decrease in the phonon thermal conductivity by almost a factor of 4 (from 19.1 to 5.12 W/(m · K)) and to insignificant change (~22±1 W/(m · K)) for the (110) and (111) orientations. In comparison with the Si/Ge films, the Ge films of equivalent thickness display a qualitative and quantitative agreement indicating the scattering of phonons at the Si/Ge interface to be balanced by the higher thermal conductivity of the Si layers. Keywords: phonon thermal conductivity, thin-films, layered structures, silicon and germanium, molecular dynamics.
Energy Characteristics of Electron-Stimulated Desorption of Lithium Atoms from Lithium Layers on the Li-=SUB=-x-=/SUB=-Au-=SUB=-y-=/SUB=- Surface
Authors: Kuznetsov Yu. A.  , Lapushkin M.N.
Published: January 2023

The formation of 2D LixAuy semiconductor layers on the surface of gold deposited on a tungsten substrate has been studied. The processes of electron-stimulated desorption of Li atoms in the Li/LixAuy/Au/W system are considered. The presence of two peaks in the kinetic energy distribution of desorbed lithium atoms is shown: a high energy peak at an energy of 0.3 eV and a low energy peak at an energy of 0.11 eV. The high energy peak is associated with the desorption of lithium atoms from the adsorbed lithium layers, and the low energy peak is associated with the LixAuy intermetallic compound. The influence of the number of deposited gold and lithium atoms on the process of formation of 2D semiconductor LixAuy layers is studied. It is shown that the processes of electron-stimulated desorption occur in the Li monolayer and the LixAuy layer closest to it. A model of electron-stimulated desorption of Li atoms in the Li/LixAuy/Au/W system is proposed. Keywords: electron-stimulated desorption, lithium, gold, semiconductor, intermetallic compound.
Optical modulation of anti-stokes photoluminescence of the Y-=SUB=-2-=/SUB=-O-=SUB=-2-=/SUB=-S : Er
Authors: Gruzintsev A.N.
Published: January 2023

The luminescence and excitation spectra of visible photoluminescence of Y2O2S : Er ceramics (1 at.%) at different optical pumping have been studied. It is shown that the anti-Stokes luminescence of single crystals doped with erbium has a high intensity when pumping the metastable state 4I13/2 of impurities. The resonant wavelengths of IR-photons for two-photon excitation of the visible glow Y2O2S : Er. are determined. A method of photooptical modulation of anti-Stokes luminescence has been developed, which makes it possible to determine the nature of the corresponding electronic transitions inside the excited glow centers. Keywords: Luminescence, excitation, photooptical modulation.
Metal-Insulator phase transition in thin films of vanadium dioxide doped with indium
Authors: Andreev V. N.  , Klimov V. A.
Published: January 2023

The electrical conductivity of thin polycrystalline films V(1-x)InxO2 has been studied in a wide temperature range covering the regions of existence of both the metallic and insulator phases. It is shown that with increasing indium concentration, the temperature of the metal-insulator phase transition decreases, and the width of the temperature region of phase coexistence monotonically increases. To explain the temperature dependence of the electrical conductivity of the insulator phase V(1-x)InxO2, a model of hopping conductivity is applied, taking into account the effect of thermal vibrations of atoms on the resonance integral. Calculated the values of the parameter ε depend on the degree of doping of VO2. Keywords: phase transition, vanadium oxides, thin films, polaron, electrical conductivity.
Electron-phonon interaction in the surface dimer adsorption model
Authors: Davidov S. Yu.  , Posrednik. O. V.
Published: January 2023

In the scope of the model of surface dimer, formed by the adsorbed atom and below lying substrate surface atom, the problem on the electron-phonon interaction effect on the charge transfer in adsorbed system is considered. The case of adsorption on metal is examined thor oughly. Keywords: adsorbate, substrate, dimer's vibrations, charge transfer.
Magnetotransport, thermophysical and magnetocaloric properties of manganite La-=SUB=-0.8-=/SUB=-Ag-=SUB=-0.1-=/SUB=-MnO-=SUB=-3-=/SUB=- in magnetic fields up to 8 T
Authors: Gamzatov A. G.  , Kadyrbardeev A. T.  , Aliev G. M.  , Abdurazakov R. R.  , Markelova M. N.  , Batalov A. B.  , Alitv A. M.
Published: January 2023

The electrical resistance, heat capacity, thermal conductivity, thermal conductivity and magnetocaloric effect of the polycrystalline sample La0.8Ag0.1MnO3 were measured in the temperature range 77-350 K and in magnetic fields up to 8 T. It is shown that electrical resistance in the paramagnetic phase can be explained within the framework of the concept of small-radius polarons with an activation energy of EP=119 meV, and the behavior of electrical resistance in the low-temperature ferromagnetic phase suggests the existence of several scattering mechanisms. The observed large magnitude of the magnetoresistive effect at low temperatures is explained by the intergranular tunneling of conduction electrons. An anomalous abrupt change in the lattice heat capacity during the ferromagnetic-paramagnetic phase transition was detected. The increase in thermal conductivity and thermal conductivity observed below the Curie temperature TC is associated with the scattering of phonons by local Jahn-Teller distortions, which weaken during the transition to the ferromagnetic phase. The magnetocaloric effect in a magnetic field of 8 T reaches a value of Delta Delta Tad=4 K, and the value of the efficiency of magnetic cooling in the same field is 261.6 J/kg. Keywords: manganites, electrical resistance, heat capacity, thermal conductivity, thermal conductivity, magnetocaloric effect. Keywords: manganites, electrical resistance, heat capacity, thermal conductivity, thermal conductivity, magnetocaloric effect.
A Low-wavelength host absorption edge of LiB-=SUB=-3-=/SUB=-O-=SUB=-5-=/SUB=- and Li-=SUB=-2-=/SUB=-B-=SUB=-4-=/SUB=-O-=SUB=-7-=/SUB=- crystals
Authors: Ogorodnikov I. N.
Published: January 2023

We have carried out an experimental study of the VUF- edge of the optical host absorption of lithium borate crystals LiB3O5 (LBO) and Li2B4O7 (LTB). The transmission (T=293 K) and absorption (T=80, 293 K) spectra were studied, the short-wavelength edge of the transparency band (cutoff wavelength) and the energy position of the edge fundamental absorption at which the absorption coefficient k=50 cm-1 were determined. The absorption edge temperature shift coefficient -(3-4.7)·10-4 eV/K was determined. The dependence of the absorption edge parameters of oriented LBO normal Y and LBO normal X crystals has been studied. Based on low-temperature reflection spectra (T=10 K, theta=17o, E=4-32 eV) the Kramers-Kronig method was used to calculate the spectra of optical constants: refractive index (n) and absorption index (k), real (ε1) and imaginary (ε2) parts of the complex permittivity, as well as the absorption coefficient μ. The lowest energy peak, due to electronic transitions from the top of the valence band to the states of the bottom of the conduction band, was studied in the ε_2(E) spectrum, the thresholds for interband transitions were determined (Eg at T=10 K): 8.5-8.6 eV(LBO normal Y), 8.6-8.7 eV (LBO normal X) and 8.8-8.9 eV (LTB). The origin of the fundamental absorption edge of lithium borates is discussed. Keywords: Lithium triborate LiB3O5, lithium tetraborate Li2B4O7, host absorption edge, optical properties.
Study of the effect of ultra-low arsenic flux on the formation of In(As)/GaAs nanostructures by droplet epitaxy
Authors: Balakirev S. V.  , Kirichenko D. V.  , Chernenko N. E.  , Shandyba N. A.  , Eremenko M. M.  , Solodovnik M. S.
Published: January 2023

In this paper, we present the results of studying the influence of arsenic pressure in the range of ultra-low values (10-7-10-6 Pa) on the processes of modification of In/GaAs(001) droplets with various initial sizes obtained by droplet epitaxy. We experimentally demonstrate that exposure of droplets to the ultralow arsenic flux makes it possible to reduce the droplet size to subcritical sizes while maintaining the initially specified surface density. The exposure of droplet nanostructures in the arsenic flux can be accompanied only by a decrease in their size, which is more typical for droplets obtained at large amounts of indium deposited material. For droplets with a smaller initial size, the formation of rings along the perimeter of the initial droplets and holes inside the rings is typical along with the droplet reduction. We also reveal that the dependence of the relative volume of droplets subjected to diffusion decay in the arsenic flux becomes more significant with a decrease in their initial size. Keywords: droplet epitaxy, nanostructures, In(As)/GaAs, arsenic flux.
Violation of the Taylor relation under high-energy external influences
Authors: Malashenko V. V.
Published: January 2023

The motion of an edge dislocation ensemble in a binary alloy under high strain rate deformation is theoretically analyzed. Within the framework of the theory of dynamic interaction of defects (DID) an analytical expression for the dependence of the dynamic yield stress on the dislocation density is obtained. The conditions for the violation of the Taylor relation under high-energy external influences are determined. The experimentally observed nonmonotonic dependence of the dynamic yield strength on the dislocation density is explained. The minimum of this dependence is due to the competition between the influence of various structural defects on moving dislocations. This minimum takes place during the transition from the dominance of dynamic drag by one type of defects to the dominance of another type defects. Keywords: dislocations, high strain rate deformation, defects, Guinier-Preston zones, alloys.
Determination of the ATZ ceramics with different SiO-=SUB=-2-=/SUB=- contents tensile strength by the "brazilian test" method
Authors: Dmitrievskiy A.A.  , Zhigacheva D.G.  , Efremova N.Yu.  , Ovchinnikov P.N.  , Vasyukov V.M.
Published: January 2023

The possibility of using the "Brazilian test" method to determination the tensile strength sigmat of composite zirconia ceramics small-size samples were demonstrated and the reliability of the obtained sigmat values were confirmed. It was found that the dependence of the tensile strength of alumina toughened zirconia (stabilized by calcium oxide) with silica addition (CaO-ATZ + SiO2 ceramics) on SiO2 concentration in them has a maximum (sigma_t=450 MPa, at CSiO_2=5 mol.%). The observed toughened is explained by an increase in the transformability of the tetragonal t-ZrO2 phase and, accordingly, by an enhanced role of transformation toughening when SiO2 is adding into the ATZ ceramics. Keywords: ATZ ceramic, tensile strength, "Brazilian test", phase transformations, transformation toughening.