bluuebunny/crossref_metadata_2025 huggingface dataset:
Determinación de los Indicadores de Calidad Energética para el Caso de un Usuario Conectado en Media Tensión
Authors: Monga Diego
Published: July 2023

El propósito del presente estudio fue determinar los parámetros de calidad energética en el sistema de un usuario conectado en media tensión, la cual registraba penalizaciones por parte de la distribuidora local. Para ello se ejecutó una auditoría energética acorde a la regulación Nro. ARCERNNR 002/20; realizándose un estudio de carga, valoración técnica de activos y análisis de variables con un equipo FLUKE 435. Determinándose; valores de Pst superiores a 1, registros de hasta 36% en THD y un fp de 0,84 en más del 50% de los registros. Se empleó el software ETAP para analizar los flujos de carga, evidenciándose que algunos puntos no cumplen con los niveles de voltaje permitidos, registrándose variaciones de hasta el 26%. Adicionalmente se propuso alternativas de ahorro mediante el aprovechamiento de radiación solar, ejecutando simulaciones en el software DIALUX. Con el análisis y propuestas planteadas, se plantea mejorar sustancialmente el desempeño energético del usuario.
Investigation of the effect of biological products on sunflower yield and removal of husks and seeds from the crushed chemical elements
Authors: A. L. Boyko , V. V. Adamchuk , L. K. Litvinyuk , O. S. Demyanyiuk , O. A. Boyko , I. V. Kuraeva , Yu. Yu. Voytiuk
Published: July 2023

Purpose. Study of the effect of biological products on sunflower yield and removal of chemical elements from the soil with husks and grain.
Methods. Microbiological, field, analytical-experimental.
Results. According to the research results, it was confirmed that the use of biological products makes it possible to regulate the intra-soil agrochemical process, influence the absorption coefficients of chemical elements from the soil by husks, seeds and leaves, increase crop increase and obtain environmentally friendly seeds. Sunflower carries a lot of phosphorus out of the soil.
Conclusions. According to the results of production studies on the impact of biological products on the yield of sunflower of the French selection “Alzan” and the ecological purity of grain, it is established:
1. The use of biopreparations Bioecofunge-3, Bioecofunge-3 + Cerium and Ce + Bacillus subtilis makes it possible to regulate the intra-soil agrochemical process, including influencing the absorption rates of chemical elements from the soil with husks, seeds and leaves, increasing the increase in yield in the range of 20.95–41.21% and obtaining environmentally friendly sunflower seeds. It is confirmed that sunflower seeds are very depleting of phosphorus from the soil (phosphorus absorption rate is 40.0).
2. To replenish the soil with phosphorus, it is necessary to use husks for composting. Burning husks and leaves to obtain energy recovery will lead to environmental pollution by ions of phosphorus, titanium, vanadium, chromium, manganese, nickel, copper, zinc, gallium, germanium, lead and bismuth.
3. To reduce environmental pollution in post-harvest current operations from γ – radiation, it is necessary to improve the purification of sunflower seeds in the combine.
4. In order to obtain environmentally hazardous crop production, it is necessary to justify the MPC on the gross content of chemical elements in the soil from hydrogen to uranium and in the process of performing technological operations in the mode of the unit's movement to automatically compare the determined gross content of chemical elements with justified MPC, and make a decision on the choice of necessary technological operations in the introduction of biological products for the creation of growth conditions in the intra-soil agrochemical environment and development of cultivated crops and obtaining dangerous agricultural products, but for this it is necessary to develop a universal program for the regulation of the intra-soil agrochemical process, taking into account the peculiarities of the soil and climatic zones of Ukraine and climate change on planet Earth.
Keywords: verbatim, soil, chemical elements, biologics, absorption rate, sunflower, husks, seeds, yield, ecology.
Maximizing Value - A Look Back at FGV Holdings Berhad
Authors: Adib Afza Mohd Norkamar Muhd , Abdul Hadi Abdul Razak
Published: July 2023

This paper explores a number of relevant capital structure theories that may help explain the real market occurrence. The debt-equity ratio is commonly utilized as a variable of interest by many to evaluate the viability of company’s capital structure. Based on Modigliani-Miller Trade-Off theory (1958), their major goal is to examine how firm-specific capital structure determinants may impact the company's capital structure choice. It is essential to comprehend how firm-specific factors could exert a direct impact on a company's share price in both the short and long run. In the case of FGV Holdings Berhad, its capital structure composition has shifted from equity-weighted to debt due to FGV's improved cash flow situations, allowing them to secure wider options of financing from the capital markets. As a result, the company's total debt to total assets ratio has risen dramatically to 76.4 percent. However, it is vital to note that FGV's debt interest payments are not adequately supported by profits before interest and tax (EBIT). Debt financing invariably requires interest payments, regardless of whether it is provided through the bond or banking markets. The net result could jeopardize the company’s value through declining share price. The Trade-off theory is seen ideal in explaining the financial conditions in FGV. It is important to balance out the benefits of debt against the costs of debt at all times.  Overall, FGV's top management should consider conducting a thorough review on its entire capital structure since the debt levels have climbed dramatically since 2014, along with a declining cash level in mid-2014.
Judicial protection of freedom of entrepreneurship in Ukraine
Authors: Zadorozhnyi Bohdan
Published: July 2023

The article analyzes the competence of the court in the area of protection of freedom of entrepreneurial activity, which is formed from the system of procedural rules of administrative jurisdiction. It is determined that the rules of administrative proceedings have procedural advantages over other judicial jurisdictions, which strengthen the guarantees of the State's implementation of its constitutional obligations in the area of guarantees and protection of freedom of entrepreneurship in Ukraine. Thus, the principle of officialdom obliges the administrative court to be procedurally active, which is necessary to investigate all the factual circumstances of the court case on its own initiative. An administrative court may not refuse to accept a claim and resolve a court case regarding guarantees of freedom of entrepreneurial activity on the grounds of unclear, contradictory or absent legislation, the subject of legal regulation of which is the issue of economic (entrepreneurial) activity. It is stated that national courts, when resolving disputes in the area of ensuring freedom of entrepreneurial activity, have formed a number of legal positions, namely: a business entity is not obliged to provide a license to a regulatory authority if the economic activity it carries out is not subject to licensing; about the existence of discretionary powers of a public authority in the area of granting licenses for certain types of economic activity; ways to resolve the «hierarchical conflict of regulatory legal acts» regarding the conduct of economic activity. In the sphere of ensuring freedom of entrepreneurial activity, a number of problems have also been identified, which are specified in this publication, which requires systematic steps from the state to eliminate them.

Key words: freedom and guarantees of entrepreneurial activity, legal positions of the court, public law dispute, constitutional obligations of the state.
A new technology of evidence research is necessary in criminal proceedings
Authors: Myroshnychenko Yuriy
Published: July 2023

The purpose of the research, part of the results of which is presented in this article, was an attempt to formulate and describe the method of judicial evidence, the method of disclosing before the court the content and significance of the evidence collected by the parties, to develop and propose rules for conducting individual legal actions, to link them into a single process (technology) forensic research. The procedure for examining evidence is not only the sequence of relevant actions, but also court-approved regulations for working with separate evidence, according to which the parties, when providing documentary evidence, must not only name the documents that they use to support their positions, but also disclose their content and report on the circumstances. in support of which they are submitted, so that it is clear both to the court and to any outside, reasonable and impartial observer. When presenting evidence, the prosecutor and the lawyer must demonstrate to the court both the propriety and admissibility of individual sources of factual data, as well as the logical connections between them, proving certain circumstances, criticizing the evidence of the procedural opponent, emphasizing the shortcomings of others and the advantages of their own evidence. That is, the content of the evidence must be revealed at the court hearing by the party that submits it to the judicial investigation, and not by the court, which should be exempted from the obligation to declare the documents provided by the parties. At the same time, the submission of evidence is not limited to providing the court with written, electronic documents or physical evidence. The justification by the parties of the necessity of questioning witnesses, experts, ensuring the arrival of these persons to the court and their questioning before the court is also the submission of evidence – factual data, information about which the interrogated have. It is proposed to borrow the experience of the courts of common law countries, where material evidence is usually submitted through witnesses who can testify to its origin.

Key words: Criminal proceedings, evidencing, technology of court research.
Human talkers change their voices to elicit specific trait percepts
Authors: Guldner Stella , Lavan Nadine , Lally Clare , Wittmann Lisa , Nees Frauke , Flor Herta , McGettigan Carolyn
Published: July 2023

The voice is a variable and dynamic social tool with functional relevance for self-presentation, for example, during a job interview or courtship. Talkers adjust their voices flexibly to their situational or social environment. Here, we investigated how effectively intentional voice modulations can evoke trait impressions in listeners (Experiment 1), whether these trait impressions are recognizable (Experiment 2), and whether they meaningfully influence social interactions (Experiment 3). We recorded 40 healthy adult speakers’ whilst speaking neutrally and whilst producing vocal expressions of six social traits (e.g., likeability, confidence). Multivariate ratings of 40 listeners showed that vocal modulations amplified specific trait percepts (Experiments 1 and 2), which could be explained by two principal components relating to perceived affiliation and competence. Moreover, vocal modulations increased the likelihood of listeners choosing the voice to be suitable for corresponding social goals (i.e., a confident rather than likeable voice to negotiate a promotion, Experiment 3). These results indicate that talkers modulate their voice along a common trait space for social navigation. Moreover, beyond reactive voice changes, vocal behaviour can be strategically used by talkers to communicate subtle information about themselves to listeners. These findings advance our understanding of non-verbal vocal behaviour for social communication.
Çeviribilimde Jiří Levý’nin Oyun Kuramı Temelinde Yanıltmaca Çevirileri
Authors: ZEYTİNKAYA Dilber
Published: July 2023

Söylenişleri birbirine yakın seslerden oluşan sözcüklerin anlamlı olup olmadığına bakılmaksızın yaratılan yanıltmacalar, zor cümle kalıplarını telaffuz etmeyi kapsayan bir oyun çeşidi olarak değerlendirilebilir. Yanıltmacalar, yabancı dil öğretiminde ve çeviri eğitiminde öğretim materyali olarak kullanılabilir. Marmara Üniversitesi’nde lisans düzeyinde çeviri eğitimi alan birinci sınıf öğrencilerinin zorunlu olarak aldığı çeviri edincinin gelişmesini hedefleyen “Çeviriye Giriş I” dersinde yanıltmacaların çevirisi öğretici bir çeviri uygulaması ile örneklendirilmiş ve çeviribilim alanının ilerlemesine katkı sağlayabilecek somut öneriler ortaya konmaya çalışılmıştır. Araştırma kapsamında kullanılan kaynak, Paul Jampert (2020) tarafından Fransızca yazılan “telaffuzu imkânsız 100 cümle” adlı eserdir. Araştırma ilgili eserden tesadüfi olarak derlenen 30 adet Fransızca yanıltmaca ile sınırlıdır. 2021-2022 eğitim-öğretim yılı güz yarıyılında 12 ve 2022-2023 eğitim-öğretim yılı güz yarıyılında 16 olmak üzere toplam 28 öğrenci araştırmaya gönüllü olarak katılmıştır. Yanıltmaca çevirileri makul çözüm arayışı ilkesini barındıran Jiří Levý’nin (1967) oyun kuramı temelinde eleştirel bir yaklaşımla değerlendirilmiştir. Bu yönde bir değerlendirme ile çeviribilimin uygulama alanının da gelişmesine katkıda bulunmak amaçlanmıştır. Yanıltmacalar yaratıcı çeviri ve çevrilemezlik bağlamında da irdelenmiştir. Bu araştırmayla çeviribilimin hem kuramsal hem de uygulamalı alanının gelişmesine imkân tanıyan öncül bir çalışma sunma gayreti gösterilmiştir. Araştırma sonucunda çevirmen adaylarının hedef dilde yeni yanıltmacalar yaratabildikleri, bu doğrultuda bilinçli çeviri kararları aldıkları görülmüştür. Yanıltmaca çevirilerinin öğrenenlerin problem çözme ve çözüm bulma becerilerini geliştirdiği sonucuna varılmıştır.
Bassnett, Susan (Ed.). (2019). Translation and World Literature. Routledge, ss. 202. ISBN: 978-1-138-64173-0.
Authors: HORZUM Şafak
Published: July 2023

Bassnett, Susan (Ed.). (2019). Translation and World Literature. Routledge, ss. 202. ISBN: 978-1-138-64173-0.
Photoredox catalysis harvesting multiple photon or electrochemical energies
Authors: Lepori Mattia , Schmid Simon , Barham Joshua P
Published: July 2023

Photoredox catalysis (PRC) is a cutting-edge frontier for single electron-transfer (SET) reactions, enabling the generation of reactive intermediates for both oxidative and reductive processes via photon activation of a catalyst. Although this represents a significant step towards chemoselective and, more generally, sustainable chemistry, its efficacy is limited by the energy of visible light photons. Nowadays, excellent alternative conditions are available to overcome these limitations, harvesting two different but correlated concepts: the use of multi-photon processes such as consecutive photoinduced electron transfer (conPET) and the combination of photo- and electrochemistry in synthetic photoelectrochemistry (PEC). Herein, we review the most recent contributions to these fields in both oxidative and reductive activations of organic functional groups. New opportunities for organic chemists are captured, such as selective reactions employing super-oxidants and super-reductants to engage unactivated chemical feedstocks, and scalability up to gram scales in continuous flow. This review provides comparisons between the two techniques (multi-photon photoredox catalysis and PEC) to help the reader to fully understand their similarities, differences and potential applications and to therefore choose which method is the most appropriate for a given reaction, scale and purpose of a project.
Pemanfaatan Cloud Computing Untuk Pengamanan Data Bagi Dunia Pendidikan
Authors: Wahyudi Jusuf , Qurniati Nofi , Rohmawan Eko Prasetiyo , Prawitasari Adriyani , Ade DO Nia , Pranata Andre
Published: July 2023

Kegiatan pengabdian pada masyarakat berupa sosialisasi tentang Pemanfaatan Cloud Computing Untuk Pengamanan Data Bagi Dunia Pendidikan dengan tujuan untuk membantu para siswa SMA Negeri 3 Bengkulu Utara untuk dapat mengikuti perkembangan teknologi secara global saat ini mulai muncul berbagai terobosan. Subjek pada kegiatan pengabdian ini adalah siswa SMA Negeri 3 Bengkulu Utara. Proses sosialisasi ini dilakukan dengan memberikan informasi tentang Cloud Computing adalah suatu teknologi komputasi yang berfokus pada pemanfaatan kemampuan internet dalam melakukan tugas komputer pada umumnya. Cloud Computing juga memiliki peranan yang besar dalam mewujudkan pendidikan yang modern, namun tetap efektif dan efisien baik dalam pendanaan, infrastruktur, dan juga hal hal lain yang berhubungan di dalamnya.
Pelatihan Pembuatan Minuman Kalamansi Telang
Authors: Huriyah Hiwayati , Hanafiah Muhammad Ali , Sumartono Eko
Published: July 2023

Tujuan dari pelatihan pembuatan minuman kalamansi telang adalah memberikan pengetahuan dan keterampilan kepada kelompok masyarakat yang tergabung dalam Kelompok Wanita Tani, UP3HP dan IKM di wilayah kerja Balai Penyuluhan Pertanian Selebar supaya mampu melakukan diversifikasi produk olahan jeruk kalamansi. Diharapkan dari kegiatan ini kelompok masyarakat tersebut dapat meraih ceruk pasar baru dari olahan jeruk kalamansi.Metode pelatihan dilakukan melalui pemaparan materi dan teknik pengolahan jeruk kalamansi, dilanjutkan dengan praktik pembuatan minuman kalamansi telang  beserta pengemasannya serta tanya jawab seputar produk kalamansi telang.Hasil kegiatan menunjukkan Kelompok Wanita Tani, UP3HP dan IKM yang mengikuti pelatihan memahami dan mampu memproduksi minuman kalamansi telang secara baik.Kata Kunci: Pelatihan, Jeruk Kalamansi, Bunga Telang
A study on Korean proficiency and Uzbek students’ adaptation to Korean culture
Authors:   Korean Association for Literacy, Cho Nam-hyun , Kim Boyeong
Published: July 2023

This study explored the adaptation to Korean culture through phenomenological research on the advanced level of Korean among Uzbek students studying at domestic universities. The results of an in-depth interview with three Uzbek students are as follows. First, Uzbek students learned Korean through acquaintances and media even before coming to Korea and showed strength in speaking but difficulty in writing and learning Chinese characters. Second, Uzbek students regularly interacted and formed close relationships with Koreans. Third, Uzbek students had a high understanding of Korean food-related idioms and culture, tried to actively accept Korean-style personnel culture, and above all, enjoyed Korean dramas. However, they were not familiar with the culture of young Koreans who spoke informally and quickly when they became close. Fourth, Uzbek students found it difficult to adapt to food containing pork for religious reasons, and they felt awkward because the Korean language learned in their hometown or through the media was radically different from that used by young Koreans. They also had difficulties dealing with school administration and adapting to portal sites, and they faced substantial difficulties getting a part-time job.
An electrical brain, The beginning of Artificial Intelligence: Based on the movie
Authors:   Korean Association for Literacy, Nah JeongEun
Published: July 2023

The movie ‘The Imitation Game’ deals with the story of British mathematician and cryptographer Alan Turing. During World War II, he was the protagonist who led the war to victory by deciphering Enigma, an impregnable code system. Computer science with the historical story of Alan Turing, such as the agony of a genius mathematician, curiosity about the problem that there might be a relationship between encryption and decryption, an approach to solving a fundamental problem, and teamwork with colleagues who understand and support it. This is a movie that explains the early status of the computer(calculation machine).
In this film, Turing, who created a theoretical model to solve a problem, shows the process of making an effort to realize it. The advent of the modern computer, which is still in use today, is well depicted in this film. Turing thought of a machine that could be applied to everything, not just one. The machine is not programmable, it’s re-programmable. Beyond this, his question that machines cannot think the way humans think, but machines can imitate and think differently is a challenge to us today and was the beginning of today's Computer Science and Artificial Intelligence.
A BASE NACIONAL COMUM CURRICULAR NA EDUCAÇÃO FÍSICA: UMA VIVÊNCIA SOCIALIZADA NA EDUCAÇÃO BASICA
Authors: de Medeiros Maria Luciane Silva , Cavalcante Jean Silva , Campos Aline Soares , do Monte Thaidys da Conceição Lima , Freitas Mirian Silva Freitas , Ferreira Gabriel Campelo , Fernandes Maria Petrília Rocha , Barroso Mateus Lemos
Published: July 2023

O presente estudo teve o objetivo de descrever a experiência sobre aclassificação dos esportes realizados com estudantes do ensino fundamental II de umaescola pública municipal, através da intermediação de alunos do ensino médio de umaescola pública estadual de educação profissional. Métodos: Trata-se de um estudodescritivo, do tipo relato de experiência, com uma abordagem qualitativa. Resultados:Observou-se que as experiências vivenciadas possibilitaram aos estudantes oconhecimento das classificações dos esportes e sua experimentação para além da teoria,fornecendo novos olhares sobre os esportes, bem como uma Educação Física de formamais reflexiva. Conclusão: Analisamos que as atividades propostas contribuíram para odesenvolvimento profissional e pessoal dos alunos de ambos os níveis de ensino, assimcomo para a comunicação entre a professora e seus estudantes-monitores.Palavras-chave: BNCC, Educação Física, Relato.
AUTOEVALUACIÓN DEL RENDIMIENTO ACADÉMICO EN ESTUDIANTES UNIVERSITARIOS CON UNA HERRAMIENTA DIGITAL
Authors: Tumi Figueroa Alfredo , Quispe Apaza Lucio , Supo Gutierrez Jose Antonio , Montagne Velásquez Richard Adnán , Yucra Sotomayor Martha , Torres Segura Julio Wile , Cruz Quilca Dominga
Published: July 2023

Objetivo: Elaborar un cuestionario y código en Python para evaluar el rendimiento académico de los estudiantes y determinar su aptitud como estudiantes de alto rendimiento. Metodología: Se diseñó un cuestionario con preguntas y alternativas que abarcan diferentes aspectos del rendimiento académico. También se desarrolló un código en Python para implementar el cuestionario de manera interactiva. Resultados: Se obtuvo un cuestionario dinámico y rápido, que permite a los estudiantes responder a las preguntas y recibir una calificación instantánea. El código en Python facilita el proceso de evaluación y proporciona una herramienta interactiva. Conclusiones: La investigación ha logrado desarrollar un cuestionario y código en Python que permiten evaluar el rendimiento académico de los estudiantes de manera eficiente. Esta herramienta puede ser utilizada por los estudiantes y profesionales en educación para identificar y apoyar a los estudiantes con mayor potencial académico.
ENTRE A BNCC E O MITO DA CAVERNA: O ENSINO NAS PRÁTICAS COTIDIANAS ESCOLARES
Authors: Cozac Waleska , Soeiro Lucas Borges , Pinto Luiz Antonio Gomes , Pereira Jean Carlos
Published: July 2023

Este artigo problematiza a Base Nacional Comum Curricular (BNCC), documento que, ilusoriamente, afirma, por via de seus discursos, fomentar qualidade e equidade na educação básica brasileira. Diante de uma suposta soberania, a Base coloca-se em patamar superior frente à realidade das escolas públicas do país e, ainda, como uma solução às práticas docentes e às desigualdades sociais. Questionando tais equívocos, a fim de trazer lume sobre a atual situação educacional posta, traçamos, neste texto, uma analogia entre a BNCC e o Mito da Caverna, de Platão, a fim de pensarmos possíveis estratégias pedagógicas para as práticas escolares. Nesse intuito, postulamos que a BNCC pode ser aludida como uma referência à caverna; já os profissionais da educação, os prisioneiros da alegoria platônica. Considerando que a prática educativa faz parte da prática social impreterivelmente, estaria a sociedade, também, na condição de prisioneira de suas próprias ilusões, cabendo à docência a atitude filosófica (CHAUÍ, 2013) sob a luz dos cotidianos das escolas para escapar das imagens das sombras aprisionadoras e ilusórias do algar.
Three-brain methodology: the way to achieve the Ecuadorian high school graduate's exit profile
Authors: Soto Grau Grisel de la Concepción
Published: July 2023

This article presents the three brains methodology proposed by Waldemar De Gregori as a way to obtain the exit profile of the Ecuadorian high school graduate and, consequently, access to higher education and a better preparation for life. A bibliographic review of projects that apply this methodology in different educational institutions is carried out in order to promote the development of skills such as leadership, teamwork, scientific research and innovation, among others.  This research, with a qualitative approach, suggests the renewal of traditional methodological strategies for a methodology that allows the holistic development of the student and that enhances the values of the Ecuadorian high school graduate's exit profile.
Reflection & Projection Women's "Special Treatment" in the 2024 Election Regulations: Study of PKPU 10/2023
Authors: BUDHIATI Ida , PRABOWO Rian Adhivira
Published: July 2023

Purpose - During the 2024 election, the KPU issued PKPU 10/2023, which regulates candidacy. PKPU 10/2023 contains changes to a new method for calculating decimals for calculating women's quotas in electoral districts. The question arises: Does PKPU 10/2023 contain the spirit of special treatment in the interests of women? For this purpose, this study was carried out by departing from three aspects: (i) The historicity of the dynamics of "special treatment" in the 1945 Constitution.Methodology – Also considered in this section are the circumstances and conditions that served as the background for including special treatment provisions in the constitution, along with the dynamics surrounding them. (ii) Precedents in Constitutional Court Decisions which provide rules for the meaning of special treatment. (iii) The role of the KPU as a regulator in formulating its regulations, namely the attribution of authority possessed by the KPU to translate the spirit of the constitution towards special treatment. Finally, (iv) the substance of the PKPU 10/2023 norm itself is reviewed for conformity with the norms.Findings - In succession, the following were found: First, from a historical perspective, the special treatment of women's political quotas shows a tendency for constitutional interpretations to open space for women's political involvement. Second, the KPU as the regulator has a strategic role in interpreting the constitutional spirit, including special treatment for women. Third, regarding substance, the content of norms contained in PKPU 10/2023 is different from Law 7/2017 and the 1945 Constitution.Implication - From these three aspects, this study concludes that PKPU 10/2023 shows a discrepancy in the spirit of special treatment in capturing the interests of women's political representation. There should be changes to PKPU 10/2023 norms while maintaining the special treatment provisions for women as contained in PKPU 20/2018.
Актуальные проблемы современной науки. Сборник научных работ (статей) обучающихся
Authors: Жебо А. В.
Published: July 2023

В сборник вошли научные статьи, подготовленные обучающимися по программам магистратуры Хабаровского государственного университета экономики и права в 2022-2023 гг. В представленных статьях рассмотрены актуальные проблемы развития теоретических и совершенствования практических подходов в различных областях управления, экономики и юриспруденции. Статьи выполнены под руководством преподавателей университета и представлены в авторской редакции.
Авторы статей несут ответственность за подбор и точность приведенных фактов, цитат, статистических данных и прочих сведений, а также за то, что в материалах не содержатся сведения, не подлежащие открытому опубликованию
The Inner 2 pc of Sagittarius A*: Simulations of the Circumnuclear Disk and Multiphase Gas Accretion in the Galactic Center
Authors: Solanki Siddhant , Ressler Sean M. , Murchikova Lena , Stone James M. , Morris Mark R.
Published: July 2023

The inner few parsecs of the Milky Way’s Galactic center contain the central accreting supermassive black hole, over a million stars, and multiple large gaseous structures. In the past, the structures at these length scales have generally been modeled independently of each other. It is consequently not well understood how these complex features interact with each other, nor how gas flows between the outer few parsecs and the inner subarcsecond region (1″ ≈ 0.04 pc). In this work, we present hydrodynamic simulations of the inner few parsecs of the Galactic center that, for the first time, combine a realistic treatment of stellar winds and the circumnuclear disk (CND) as they interact with the gravitational potential of the nuclear star cluster and Sagittarius A*. We observe interactions of the stellar winds with the inner edge of the CND, which leads to the growth of instabilities, induced accretion of cool gas from the inner edge of the disk, and the eventual formation of a small accretion disk of ∼104–105 K within r ∼ 0.1 pc. The formation of an inner disk qualitatively agrees with observations. This disk grows in radial extent and mass with time on ≳10 kyr timescales, with a growth rate of

M
∝

t

kyr

3.5

. We discuss additional physical mechanisms not yet included in this work that can improve our model.
The First Instrumentally Documented Fall of an Iron Meteorite: Orbit and Possible Origin
Authors: Kyrylenko Ihor , Golubov Oleksiy , Slyusarev Ivan , Visuri Jaakko , Gritsevich Maria , Krugly Yurij N. , Belskaya Irina , Shevchenko Vasilij G.
Published: July 2023

A bright fireball observed on 2020 November 7, over Scandinavia, produced the first iron meteorite with a well-determined pre-atmospheric trajectory. We calculated the orbit of this meteoroid and found that it demonstrates no close affinity with the orbit of any known asteroid. We found that the meteoroid (or its parent body) most probably entered the near-Earth orbit from the main asteroid belt via either ν
6 secular resonance with Saturn (89%) or 3:1 mean-motion resonance with Jupiter (11%). The long YORP timescale of the meteoroid suggests that it could have been produced in the main asteroid belt and survived the journey to the near-Earth orbit.
The Advanced Spectral Library: The Evolution of Chromospheric Wind Characteristics from Noncoronal to Hybrid Giant Stars*
Authors: Nielsen Krister E. , Airapetian Vladimir S. , Carpenter Kenneth G. , Rau Gioia
Published: July 2023

The Hubble Space Telescope (HST)/Space Telescope Imaging Spectrograph treasury program Advanced Spectral Library enables investigations of the characteristics and dynamics of the wind and chromosphere of cool stars using high-quality spectral data. This paper shows how the wind features change with spectral class when transferring across the Linsky–Haisch dividing line by comparing the noncoronal M3.5 giant γ Cru with the K5 hybrid γ Dra. We compare the presence of high-ionization diagnostics in the two objects in addition to the prominent wind spectrum in predominantly singly ionized species. We study the intrinsic strength and variation of the numerous Fe ii profiles observed in the near-ultraviolet HST spectrum that are sensitive to the wind opacity, turbulence, and flow velocity. The Fe ii relative strengths and wavelength shifts between the absorption and emission components reflect the acceleration of the wind from the base of the chromosphere. Furthermore, we have modeled the wind spectra using the SEI code to derive terminal velocities, wind acceleration, and mass-loss rates. Our results indicate that the chromosphere is denser when moving toward the hybrid objects. The derived average mass-loss rates in the two objects are similar but with a significantly greater terminal wind velocity and acceleration in the hybrid star. We present the analysis of the outflowing wind characteristics when transitioning from the cool noncoronal objects toward the warmer objects with chromospheric emission from a hotter environment.
Period–Luminosity Relations for Galactic Classical Cepheids in the Sloan Bands*
Authors: Narloch Weronika , Hajdu Gergely , Pietrzyński Grzegorz , Gieren Wolfgang , Wielgórski Piotr , Zgirski Bartłomiej , Karczmarek Paulina , Górski Marek , Graczyk Dariusz
Published: July 2023

We present the first period–luminosity (PL) and period–Wesenheit (PW) relations in the Sloan–Pan-STARRS g

P1
r

P1
i

P1 bands for classical fundamental-mode Cepheids in the Milky Way. We used a relatively modest number of 76 stars for the PL and 84−85 stars for the PW relations calibration. The data for the project were collected with the network of 40 cm telescopes of the Las Cumbres Observatory, and Gaia Data Release 3 parallaxes were used for the calculations. These gri-band PL and PW relations calibrations will be a useful tool for distance determinations in the era of large sky surveys using the Sloan photometric system, especially with the near-future start of the Large Synoptic Survey of Space and Time.
Searching for Radio Outflows from M31* with VLBI Observations
Authors: Peng Sijia , Li Zhiyuan , Sjouwerman Loránt O. , Yang Yang , Jiang Wu , Shen Zhi-Qiang
Published: July 2023

As one of the nearest and most dormant supermassive black holes (SMBHs), M31* provides a rare but promising opportunity for studying the physics of black hole accretion and feedback at the quiescent state. Previous Karl G. Jansky Very Large Array (VLA) observations with an arcsecond resolution have detected M31* as a compact radio source over centimeter wavelengths, but the steep radio spectrum suggests optically thin synchrotron radiation from an outflow driven by a hot accretion flow onto the SMBH. Aiming to probe the putative radio outflow, we conducted milliarcsecond-resolution very long baseline interferometric (VLBI) observations of M31* in 2016, primarily at 5 GHz and combining the Very Long Baseline Array, Tianma 65 m, and Shanghai 25 m radio telescopes. Despite the unprecedented simultaneous resolution and sensitivity achieved, no significant (≳3σ) signal is detected at the putative position of M31* given an rms level of 5.9 μJy beam−1, thus ruling out a pointlike source with a peak flux density comparable to that (∼30 μJy beam−1) measured by the VLA observations taken in 2012. We disfavor the possibility that M31* has substantially faded since 2012, in view that a 2017 VLA observation successfully detected M31* at a historically high peak flux density (∼75 μJy beam−1 at 6 GHz). Instead, the nondetection of the VLBI observations is best interpreted as the arcsecond-scale core being resolved out at the milliarcsecond scale, suggesting an intrinsic size of M31* at 5 GHz larger than ∼300 times the Schwarzschild radius. Such extended radio emission may originate from a hot wind driven by the weakly accreting SMBH.
Borges/Perón. Indicios de una mitología nacional
Authors: Abduca Ricardo G.
Published: July 2023

Ubico indicios de mitos nacionales analizando obras narrativas (de Borges y algunos otros autores), y dichos acerca de Borges, centrándome en cómo se verifica, en la narrativa de Borges, (y también en sus intervenciones públicas y en lo que se dice sobre su figura) la irrupción del peronismo. Propongo un cambio de escala: sin intentar interpretar los grandes momentos constitutivos entendiéndolos como mitos de origen, intento constituir series, de características cuasi-míticas, a partir de poner en relación a breves sintagmas que se reiteran en distintas unidades narrativas. Elementos transversales, que van de un relato a otro. Sintagmas que se analizan tomando al conjunto de la obra de Borges como paradigma, y no sólo relatos aislados. En primer término, exploro ciertas constantes en algunos relatos del período 1945-54. Luego me detengo en una serie de versiones contemporáneas sobre un Borges ciego a quien un joven peronista ayuda a cruzar la calle. En tercer lugar. el tema de la aparición de relatos oníricos, literariamente enunciados, sobre personas con garra de pájaro, vinculándolos a los dilemas morales de la élite intelectual en los tiempos del primer peronismo. En tanto estos conjuntos tienen mucho en común con los mitos al ser reelaboraciones sucesivas de un elemento narrativo, podrían ser abordadas con métodos de análisis míticos propios de la antropología estructural. No obstante, el material utilizado tiene diferencias con las mitologías clásicas: a) tiene versiones orales, pero también escritas; b) hechos ficcionales, pero también históricos; c) admiten un orden cronológico verificable. Por lo tanto, arriesgo aquí una exploración metodológica y teórica más bien experimental, aunque deudora de Lévi-Strauss. Concluyo que en estos dos conjuntos se verifica el funcionamiento un sistema ideológico, que es el de la formación nacional argentina, con sus tensiones y crisis.
“If You Don't Eat Meat, What Do You Eat?”
Authors: Hickey M. Gail
Published: July 2023

This chapter explores U.S. migrants' experiences with and perceptions about institutional food choices, with a special emphasis on vegetarian or plant-based diets. The author draws upon oral history interviews with South and Southeast Asian migrants residing in the Midwestern United States. Emergent themes include dining at home versus at work or school, religious considerations, and assimilation. Of particular interest is the finding that many interviewees perceive compatibility in dietary preferences as a vital characteristic in potential marriage partners. The chapter concludes with research-based recommendations for including plant-based food choices in school cafeterias, hospitals, and restaurants.
Digital Transformation of the Retail Point of Sale in the Artificial Intelligence Era
Authors: Santos Victor , Bacalhau Lara Mendes
Published: July 2023

Digital transformation in the retail industry has led to significant changes in the way that point-of-sale (POS) systems operate. In the artificial intelligence (AI) era, POS systems have become increasingly intelligent and sophisticated helping retailers to improve efficiency, increase customer satisfaction, and boost sales. AI-powered POS systems use machine learning algorithms to analyze customer data and make intelligent recommendations about products and services. An AI-powered POS system might be able to analyze a customer's purchase history and suggest related products that the customer might be interested in. Another aspect of digital transformation in the retail industry has been the integration of POS systems with other technologies, such as mobile devices, the internet of things (IoT), and augmented reality technology (ART). This has enabled retailers to create an efficient shopping experience and provide access to a wider range of products and services.
An Integrated View on Social Media Marketing Actions and Their Expected Impacts on Consumer Behavior
Authors: Pereira Inês , Barbosa Belem , Vale Vera Teixeira
Published: July 2023

This chapter aims to combine the contributions scattered in the literature by analyzing the different types of social media marketing actions and their expected outcomes. A systematic literature review was conducted and complemented with interviews with practitioners (n=8) in order to validate the findings. The analysis confirmed that the literature is particularly fragmented, although it approaches a very diversified list of social media marketing actions (n=29). Four types of actions were identified: actions that evoke emotions, actions that foster interaction and involvement, actions of information sharing, and commercial actions. Practitioners involved in the validation process confirmed the adequacy and usefulness of the classification. Social media marketing actions are organized into four blocks according to their objectives and impacts on consumer behavior, hence providing a tool that was recognized by a sample of practitioners as useful to guide their efforts and budgets.
Attitudes and Perceptions of Postgraduate Medical Trainees towards the Library User Education (LUE) Programme
Authors: Wadasinghe C. , Dilhani M. P. P.
Published: July 2023

Library user education aims to make library users proficient in research and lifelong learners. The impact of library user education extends beyond the classroom and orientation, allowing users to engage themselves and effectively identify, access, retrieve, and use library information resources to their advantage. It also raises awareness of the library's available information resources.The Postgraduate Institute of Medicine (PGIM) library at the University of Colombo has identified the importance of acquiring user perceptions through user education programmes. This study aimed to assess postgraduate trainees' perceptions and investigate the impact of the user education programme conducted by the PGIM library. The library user education programmes considered in this study are the PGIM library resources and services, which include the library digital repository, literature review, E-Resources, avoid in gplagiarism and managing references. The survey research design was used for the study, while the questionnaire instrument was used for data collection.The study population comprises all users participated for the library user education programme in 2020 -2021. The study found out that the user education programme had positively affected the postgraduate trainees' use of the library and academic performance. Awareness, accessibility, and utilisation of library services and resources impact the library user education programme.The study also emphasised the significance of ongoing library user education programmes in developing research skills among medical students in order for them to develop medical information retrieval, supporting research work and other findings provided to medical trainees, which supports their professional life.
Sri Lanka–Maldives Distance Education Program in Library and Information Science Conducted by the SLLA: A Historical Narration
Authors: Gamage R. , Aminath R.
Published: July 2023

This research paper presents a chronological account of the initiation, implementation, and conclusion of the joint Sri Lanka-Maldives distance education program in library and information science. The three-tier diploma course started in 1996 and was officially completed in 2003. Tier one was repeated in 2003 but was not continued to other levels. This study explores the program's origins, implementation, outcome, and challenges. The research method was to analyze the publicly accessible Annual Reports of the Sri Lanka Library Association (SLLA) from 1995 to 2005. The results of the content analysis were presented in a narrative style. This is the second stage of a multi-stage research which includes an in-depth literature review on published research, administrative documents of partner organizations, and interviews with selected participants.Although there was a significant enrollment of students initially in 1996, the pass rate was relatively low. The program took more time to complete due to financial challenges. As a result, it prolonged for a duration of 8-9 years for delivery instead of 3 years. The narration reveals the course organizers' and participants' tiring efforts throughout the project. It is a unique historical case for an international library and information science capacity-building initiative.
Feasibility of Implementing a Metadata Service for Cataloguing in Tamil
Authors: Ketheeswaren S. , Charles E. Y. , Chandraassekar K.
Published: July 2023

This study examined the feasibilityy of introducing a metadata service for cataloguing records in Tamil. Thee main objective was to determine the potential benefits and challenges aasssociated with this service. To achieve this, a survey methodology was emmployed to collect data and assess the feasibility of the metadata service. TThe results of the study indicate that a metadata service would be a valuabblle e tool for cataloguing records in Tamil. However, the study also highlightss technical difficulties, such as internet connectivity issues, that may presenntt significant challenges in implementing the service. The study also idennttifies the need for computer literacy programmes for librarians beforee implementing the metadata service. Furthermore, the study concludes thhaat the introduction of a metadata service is unlikely to reduce cataloguing timme or the need for human resources. The study specifically offers valuable iinnsights into the potential benefits and challenges that arise from the introodduction of a metadata service in public libraries located in the Jaffna districtt.
Paraskeletal plasmacytoma presenting as a chest wall mass
Authors: Mallik Sonali , Datta Ananda , Mohapatra Debahuti
Published: July 2023

Extramedullary involvement in multiple myeloma is uncommon. It can present as a plasma cell mass in the soft tissue surrounding the bony structures through direct extension or in various other organs via hematogenous spread. Here, we report a case of paraskeletal plasmacytoma that manifested as a chest wall mass in a 60-year-old man.
Photochemical and phytomass aspects of pomegranate seedlings grown under water salinity and foliar nitrogen fertilization
Authors: Nóbrega Jackson Silva , Fátima Reynaldo Teodoro de , Ferreira Jean Telvio Andrade , Ribeiro João Everthon da Silva , Silva Toshik Iarley da , Lima Geovani Soares de
Published: July 2023

Pomegranate is a fruit with potential for exploitation in the Brazilian Northeast as medicine and food. However, the qualitative and quantitative scarcity of water resources is common in this region, requiring the use of water with high salt contents in irrigated agriculture. The adoption of strategies to reduce the harmful effects of salt stress in plants is therefore necessary, and foliar nitrogen (N) fertilization is a promising alternative. The objective of the work, therefore, was to evaluate the photochemical and phytomass aspects of pomegranate seedlings grown under irrigation water salinity and foliar nitrogen fertilization. The experiment was performed in a randomized block design, in an incomplete factorial scheme, with five levels of electrical conductivity of irrigation water - ECw (0.50, 1.15, 2.75, 4.35 and 5.00 dS m-1) and five nitrogen doses - N (0.0, 0.33, 1.15, 1.97 and 2.30 g L-1), totaling nine combinations, generated by the Central Composite Design, with four repetitions and two plants per repetition. Foliar N application at a dose of 1.37 g L-1 increased the production of leaf and root dry phytomass at 90 days after emergence. Salt stress reduced the photochemical activity and phytomass production of pomegranate seedlings, while there was a stimulus by increasing N application up to 2.3 g L-1.

Keywords: nitrogen, photochemical efficiency, Punica granatum L., salt stress.
Monotone extremal functions and the weighted Hilbert’s inequality
Authors: Carneiro Emanuel , Littmann Friedrich
Published: July 2023

In this note we find optimal one-sided majorants of exponential type for the signum
function subject to certain monotonicity conditions. As an application, we use these special
functions to obtain a simple Fourier analysis proof of the (non-sharp) weighted Hilbert–
Montgomery–Vaughan inequality.