bluuebunny/crossref_metadata_2025_split huggingface dataset:
Crossflow-Induced Breakdown and Transition Correlation for a Hypersonic Swept Plate Flow
Authors: Li Gen , Su Caihong 
Published: November 2024

The crossflow-induced transition for a Mach 6 flow over a swept plate with a 35 mm nose radius and a sweep angle of 45 deg is investigated using direct numerical simulations (DNSs). In order to shed light on the complete transition process, the evolution of a stationary crossflow wave is first simulated. Then, unsteady wall blowing/suction perturbations are introduced to trigger transition to turbulence. The results show that both the type I and III secondary modes are excited, and they subsequently undergo a linear stage of amplification before breakdown. The type II mode is undetected despite its amplification predicted by the two-dimensional eigenvalue stability approach. Overall, the type I mode achieves a dominant amplitude and plays a key role in the transition. Furthermore, a transition correlation method is proposed based on the dominant secondary instability and threshold amplitude concept, and in order to verify and calibrate it, wall perturbations with different amplitudes are introduced to mimic the varying intensities of the background noise. The transition locations predicted by the most amplified secondary mode agree well with those by DNSs, validating the secondary-instability-based criterion for hypersonic crossflow transition.
Experimental Study on Scale Effects of Kerosene Combustion in Scramjet Combustors
Authors: Li Fan , Li Fei , Zhao Guoyan , Sun Mingbo , Ma Guangwei , Liu Mingjiang , Zhao Chenxiang 
Published: November 2024

The combustion characteristics in two geometrically similar kerosene-fueled scramjet combustors with mass flow rates of 0.69 and 1.41 kg/s are experimentally investigated to explore the scale effects of flame stabilization at Mach 2.52 condition. As the equivalence ratio increases, the combustion usually changes from weak to intensive to blow-out mode. The weak combustion has little effect on the flow field, whereas the intensive combustion has the opposite effect. The transition combustion tends to occur between different modes. When the single injector is used, compared with the small-scale combustor, intensive combustion cannot occur in the large-scale combustor, and the flame stability range is also narrower. One probable reason is that as the combustor scale increases, the boundary layer becomes relatively thinner, resulting in a smaller low-velocity zone and a faster mainstream velocity at the downstream wall of the cavity, which is not conducive to the flame propagation upstream to form the intensive combustion. After shortening the isolator, all cases with intensive combustion in the small-scale combustor are transformed into weak combustion, further confirming the speculation. Compared to the single injector, the dual injector is required in the large-scale combustor to achieve intensive combustion and a wider flame stability range.
KEMAMPUAN PEMAHAMAN MATEMATIS SISWA SMA PADA MATERI MATRIKS
Authors: Uup Acep , Nuraida Ida , Fatimah Ai Tusi 
Published: November 2024

Penelitian ini bertujuan untuk mengetahui gambaran pemahaman matematis siswa SMA pada materi matrik. Penelitian ini menggunakan metode penelitian deskriptif kualitatif. Subjek penelitian adalah siswa kelas XI SMA Negeri 1 Lumbung sebanyak 6 orang. Instrumen yang digunakan pada penelitian ini adalah instrumen test yaitu test kemampuan kemampuan pemahaman matematis. Analisis data yang dilakukan adalah analisis kemampuan pemahaman matematis yang terdiri dari dua yaitu pemahaman instrumental dan pemahaman relasional. Hasil penelitian menunjukan bahwa meskipun keenam siswa dinyatakan memiliki nilai dibawah KKM.
PENGARUH LITERASI DIGITAL, KREATIVITAS, PENDIDIKAN KEWIRAUSAHAAN, INOVASI, DAN EFIKASI DIRI TERHADAP NIAT BERWIRAUSAHA DIGITAL MAHASISWA FKIP UNS
Authors: Tristianto Muhammad Shevandry , Noviani Leny 
Published: November 2024

Penelitian ini bertujuan untuk mengetahui pengaruh dari 1) literasi digital terhadap niat berwirausaha digital, 2) kreativitas terhadap niat berwirausaha digital, 3) pendidikan kewirausahaan terhadap niat berwirausaha digital, 4) inovasi terhadap niat berwirausaha digital, dan 5) efikasi diri terhadap niat berwirausaha digital. Penelitian ini menggunakan metode kuantitatif dengan pendekatan deskriptif. Populasi pada penelitian ini adalah mahasiswa Fakultas Keguruan dan Ilmu Pendidikan angkatan 2019,2020, dan 2021 yang berjumlah 5948 mahasiswa. Teknik pengambilan sampel menggunakan proporsional random sampling. Sampel yang didapat pada penelitian ini sebanyak 375 mahasiswa. Teknik pengambilan data pada penelitian ini menggunakan angket kuesioner. Uji validitas menggunakan Pearson correlation product moment dan uji reliabilitas menggunakan Cronbach Alpha. Teknik analisis data penelitian menggunakan statistik deskriptif, analisis regresi linear berganda, uji t, dan koefisien determinasi. Hasil penelitian menunjukan bahwa (1) literasi digital berpengaruh positif signifikan terhadap niat berwirausaha digital dengan nilai signifikansi sebesar 0,000, (2) kreativitas berpengaruh positif signifikan terhadap niat berwirausaha digital dengan nilai signifikansi sebesar 0,000. (3) pendidikan kewirausahaan berpengaruh positif signifikan terhadap niat berwirausaha digital dengan nilai signifikansi sebesar 0,000. (4) inovasi berpengaruh negatif terhadap niat berwirausaha digital dengan nilai signifikansi 0,000. (5) Efikasi diri berpengaruh positif signifikan terhadap niat berwirausaha digital dengan nilai signifikansi 0,002
К ВОПРОСУ О ПРОИСХОЖДЕНИИ РАННЕСКИФСКИХ ШАТРОВЫХ ПОГРЕБАЛЬНЫХ КОНСТРУКЦИЙ НА СЕВЕРНОМ КАВКАЗЕ
Authors: В.Е. Маслов 
Published: November 2024

В статье рассматривается вопрос о происхождения шатровых надмогиль ных сооружений на территории Северного Кавказа на фоне проблемы происхождения раннескифской культуры. Подобные конструкции в степном поясе Восточной Европы пунктирно прослеживаются с эпохи поздней бронзы. Однако распространение ша трообразных конструкций, связанных с появлением раннескифской культуры на Се верном Кавказе, могло быть инновацией, не связанной непосредственно с местны ми степными ритуалами предскифского времени, а было привнесено извне вместе с новыми обрядами и вещами. Выдвинуто предположение об их связи с подобными сооружениями сакской культуры Приаралья. Шатровые конструкции, вероятно, явля лись не воспроизведением жилища, а обобщенной моделью мироздания, которая мог ла сочетаться с идеей Мирового дерева и земного круга.
The paper reviews the origin of tent-roofed constructions placed over the tombs in the North Caucasus in the context of the Early Scythian culture origin. The author suggests their links with similar constructions of the Saka culture in the Aral region. Most likely, tent-roofed constructions did not reproduce a dwelling; instead, they served as a general model of the world that could be related with the idea of the World Tree and the Circle of the World.
ВВЕДЕНИЕ
Authors: А.М. Воронцов , О.А. Хомякова 
Published: November 2024

Вступительная статья к разделу представляет серию материалов науч ной конференции «Актуальные проблемы археологии лесной зоны Восточной Ев ропы в эпоху Великого переселения народов и древнерусский период» (Москва, 29–30 ноября 2023 г.). Конференция была посвящена юбилею доктора исторических наук, ведущего научного сотрудника отдела археологии эпохи Великого переселе ния народов и раннего Средневековья Инны Васильевны Ислановой. Ключевые слова: лесная зона Восточной Европы, эпоха Великого переселения народов, раннее
The introductory article presents a series of materials from the scientific conference «Proceedings of the scientific conference «Topical problems of archaeology of the forest zone of Eastern Europe in the Great Migration and Ancient Russian peri ods» (Moscow, November 29–30, 2023). The meeting was dedicated to the anniversary of the Doctor of Historical Sciences, leading researcher at the Department of archaeology of the Great Migration period and the Early Middle Ages at the Institute of Archaeology, RAS, Inna Vasilyevna Islanova.
СТЕКЛЯННЫЕ ПОДВЕСКИ И КРУПНЫЕ БУСИНЫ УВЕКСКОГО ГОРОДИЩА ЭПОХИ ЗОЛОТОЙ ОРДЫ В НИЖНЕМ ПОВОЛЖЬЕ
Authors: А.В. Письмарова 
Published: November 2024

В работе представлено исследование стеклянных подвесок и крупных бусин Увекского городища, отождествляемого с одним из городов Золотой Орды – Укеком. Выборка включает 21 экз. украшений, рассмотренных как типологически, так и с точки зрения технологии изготовления. Исследование бусин и подвесок Увекского городища позволило определить преобладающие типы и технологию производства, типичные для мастерских Золотой Орды, а также выявить в коллек ции экземпляры, аналогии которым известны в памятниках Средней Азии, поздне кочевнических курганах Поволжья и мордовских могильниках.
The paper describes the study of glass pendants and large beads from the Uvek fortified settlement, which was one of the large Golden Horde cities. The analy sis of the glass pendants helps reconstruct some events of the Golden Horde past related to the development of intercultural relationships. The study sample included 21 items. Such attributes as production technology, ornamentation, form and color were used for typology. All ornamented items have a form typical for beads. The color and the ornamen tation are characteristic of Golden Horde items. The form of the beads and the pendants was determined based on their longitudinal-to-lateral cross-section ratio. The classifica tion of the Uvek pendants made it possible to single out prevailing types of beads and pendants that have analogies in the Golden Horde workshops of the Volga region. Besides, the assemblage in question includes specimens that have parallels in the sites of Central Asia, late nomadic kurgans of the Volga region and Mordovian cemeteries.
ПОГРЕБЕНИЯ С ИНВЕНТАРЕМ ИЗ МУСУЛЬМАНСКОГО НЕКРОПОЛЯ КЫРК-АЗИЗЛЕР (РЕСПУБЛИКА КРЫМ)
Authors: М.Ю. Меньшиков , А.А. Волошинов 
Published: November 2024

В статье рассматривается комплекс предметов погребального инвентаря мусульманских погребений золотоордынского периода на могильнике Кырк-Азиз лер (г. Бахчисарай, Республика Крым). Наличие погребального инвентаря является серьезным отклонением от исламского обряда захоронения (джаназы) и позволяет говорить о языческих реминисценциях на первом этапе исламизации тюрок Крыма в золотоордынское время. В статье выделяются группы, которые говорят о функ циональном назначении предметов, помещенных в могилу, приводятся аналогии для датировки находок, что позволяет в целом уточнить хронологию обширного участка кладбища Кырк-Азизлер, большинство погребений которого безынвентарные.
The paper examines a set of items from the funerary offerings retrieved from the early Muslim burials of the Golden Horde period. Islamic necropolis Kyrk Azyzler is located in the outskirts of the city of Bakhchisarai (Republic of Crimea). Pre sence of funerary offerings is a major violation of the established Islamic burial tradition (janazah) and suggests pagan reminiscences during the first stage of the Turkic popula tion Islamization in Crimea during the Golden Horde period. The paper presents infor mation concerning functional groups and chronology of objects deposited in the grave. It also provides analogies for dating the finds which is helpful in clarifying the overall chronology of a large part of the Kyrk-Azyzler cemetery, where most of the graves do not contain funerary offerings.
ПОЛИВНЫЕ КЕРАМИЧЕСКИЕ ЧАШКИ ИЗ РАСКОПОК 2019–2021 гг. В МОСКОВСКОМ КРЕМЛЕ
Authors: К.И. Панченко 
Published: November 2024

В статье дано описание найденных во время раскопок в Московском Кремле поливных керамических чашек (елейниц). Сосуды были обнаружены в сло ях усадебной застройки середины – последней четверти XV в. В первую очередь отмечается бытовой, а не ритуальный характер чашек. Даются их морфологические и технологические характеристики. Особое внимание уделено чашке с уникальным штампованным декором на поверхности изделия. Рассматривается один из возмож ных вариантов символического значения изображенного на этом сосуде хищного зверя.
Тhe paper describes glazed ceramic vessels (ampullae for holding holy oil) found during excavations in the Moscow Kremlin. The vessels were found in the layers of estate housing development of the middle – last quarter of the 15th century. The pa per points out that these vessels were intended for domestic rather than religious use. It provides their morphological and technological characteristics. The most notable item is a vessel with a unique stamped decoration on its surface. The paper explores one of the possible variants explaining symbolic meaning of a predatory animal depicted on the vessel.
ПОЯСНАЯ ГАРНИТУРА ИЗ КОСТИ И РОГА КУЛЬТУРНОГО КРУГА ЛОЛА В КОНТЕКСТЕ ХРОНОЛОГИИ, КУЛЬТУРНО-ГЕНЕТИЧЕСКИХ ПРОЦЕССОВ И МЕЖКУЛЬТУРНЫХ КОНТАКТОВ
Authors: Р.А. Мимоход 
Published: November 2024

Статья посвящена анализу поясной гарнитуры из кости и рога куль турного круга Лола. В ней охарактеризованы все известные на сегодняшний день поясные пряжки и подвески лолинской и невинномысской культур, а также волго- уральской культурной группы. Установлена их хронология как в рамках отдельных культур, так и в рамках всего посткатакомбного блока. Раскрываются механизмы происхождения отдельных типов поясной гарнитуры, которые связаны с Кавказом и собственным формотворчеством. На примере костяных и роговых пряжек рекон струируются межкультурные связи культурного круга Лола с носителями бабин ских и покровских традиций.
The paper analyzes a belt set made of bone and antler that is ascribed to the Lola cultural traditions. It characterizes all belt buckles and pendants of the Lola and Nevinnomyssk cultures as well as the Volga-Urals cultural group known to date. It also determines their chronology both within separate cultures and within the entire post-Cat acomb family of cultures. The paper describes the mechanisms of origin of some belt set types linked to the Caucasus as well as specific types of belt sets developed by the afore mentioned populations. The bone and antler buckles are used to reconstruct intercultural links between the Lola contexts and the Babino and Pokrovka traditions.
Influence of overweight and obesity on the results of coronary artery bypass grafting on a working heart in patients of different age groups and the existence of an "obesity paradox"
Authors: Zhurba O. O. , Lazoryshynets V. V. , Rudenko A.V. 
Published: November 2024

Objective. To determine the effect of overweight and obesity on the results of coronary artery bypass grafting in patients of different age groups and the presence of the "obesity paradox".
Materials and Methods. The study included 3674 patients (3061 men and 613 women) with coronary heart disease who underwent coronary artery bypass grafting on a beating heart. The average age of the study participants was (60.6 ± 0.8) years. Data from a clinical anthropometric study with the determination of body mass index and its interpretation were analyzed. The study design was based on the age group of patients in accordance with the age classification of the World Health Organization.
Results. In the study sample, overweight patients accounted for 45.5%, and obese patients – 40.1%. The frequency of normal body weight increased with increasing age. In geriatric patients, this rate was statistically significantly higher than in young patients (p = 0.0001, χ2 = 31.13) and elderly patients (p = 0.05, χ2 = 3.84). The highest incidence of overweight was in elderly patients, and the lowest in young patients (p = 0.0001, χ2 = 22.95). The incidence of overweight also increased with increasing age. The incidence of obesity was highest in young patients and lowest in elderly patients (p = 0.0001, χ2 = 119.97). The incidence of obesity decreased with increasing age. Early postoperative mortality was statistically significantly higher in patients with normal body weight than in patients with overweight (p = 0.02, χ2 = 5.08).
Conclusions. The sample of 3674 patients with coronary heart disease was dominated by overweight and obese patients of varying degrees, and only 14.4% of patients had normal and low body weight. Regarding the presence of the "obesity paradox" and the positive effect of overweight on the results of coronary artery bypass grafting on a beating heart, it was found that early postoperative mortality was statistically significantly (p = 0.02, χ2 = 5.08) higher in patients with normal body weight than in patients with exclusively overweight.
Looking beyond “the tool itself”: Towards a political systems understanding of e-participation
Authors: Karlsson Martin , Adenskog Magnus 
Published: November 2024

In this paper, we argue that e-participation research is at a crossroads as its theories and empirical scope are increasingly detached from the contemporary relationship between information technology and political participation. We illustrate this challenge through two developments: (1) the dissolving boundaries between online and offline spheres of political participation and (2) the growing dissociation between ICTs and democracy. In light of these developments, we present a potential path forward for the field, inspired by the so-called "systemic turn" in research on deliberative democracy and democratic innovations. We argue for a perspective that emphasises the relationship between e-participation and the political system in which it is enacted. This allows us, in our conclusion, In our conclusion, this allows us to present alternative potential directions for future research within the field.
Causality Nexus of Foreign Direct Investment and Economic Growth in Tanzania: An Empirical Investigation
Authors: Mnaku Honest Maganya  
Published: November 2024

This paper sought to examine the causality nexus of Foreign Direct Investment (FDI) and Economics Growth in Tanzania. Specifically, the research aim to assess the impact of FDI to manufacturing, agricultural and service sectors. Moreover, the study employed time series data from 1993 to 2023. FDI inflow is always considered an important economic growth catalyst in developing economies. Neoclassical growth theories proposed that FDI enhances economic growth by augmenting capital stock and technology. According to the neoclassical models, FDI does not enhance the long-run growth rate but instead is related to the output level. Autoregressive Distributed Lags (ARDL) models was employed to determine the long-run and causal relationship between variables of interest in all three models of the study. The findings of the manufacturing output model suggest that FDI has positive and statistically significance effect to manufacturing sector in both short run and long run. In agriculture and service sector models only short run estimation was captured due to lack of co-integration pattern among variables. The findings indicated a positive and statistical significant unidirectional causality running from FDI to both agricultural and service sectors output. Based on the findings of the study the policy implication is that Tanzania should emphasize FDI-led growth policies to enhance sustainable economic growth to realize the desired economic objectives at the macro level.
TRANSLATION STRATEGIES IN REPRODUCING THE EXPRESSIVE MEANS OF PUBLIC POLITICAL SPEECH: PECULIARITIES AND TECHNIQUES
Authors: Vasylenko Oksana M. , Khyzhun Yaroslava V. 
Published: November 2024

The paper considers the peculiarities of the application of translation strategies in reproducing the expressive potential of modern samples of the political speech genre in their specific national and linguistic variants. Political speech, which aims at embodying a certain ideological influence, will be effective if it combines rational and emotional elements. Speeches by politicians are usually expressive. Expressive political speech produces the most intended effect on the audience, its purpose is to increase the influence of what is said by the speaker and the presence of expressive function in political speeches is almost mandatory. When translating speeches of well-known politicians, the translator is interested in a certain choice of language means because the taget text should influence the foreign audience in the same way as the original own. Metaphorical utterances and phraseological units are important elements of a political speech that cause difficulties in translation. In order to transfer the expressive function in the translation of metaphors, the translator resorts to a number of stylistic modifications, transformations in which instead of the units belonging to one stylistic register, the units belonging to another one are used. Expressiveness in the speeches of the English-speaking politicians is also achieved through the use of not only metaphor but also metonymy, antithesis, epithet, hyperbole, litotes and lexical repetition. Among the types of lexical repetition anadiplosis, anaphora, epiphora and symploce are considered in the paper. When choosing a translation strategy, it is necessary to take into account the linguistic and cultural features of American rhetoric, the reaction of recipients, as well as the political situation in the country.
Modalidad de estudio y rendimiento académico en la educación superior
Authors: Ledesma Silva Yolanda Esperanza , Cobos Reina Ángel Rodrigo 
Published: November 2024

Introducción: El rendimiento académico de los estudiantes no varía con la modalidad en la que se encuentran matriculados. Metodología: Se utilizó un enfoque cuantitativo de diseño no experimental, de corte transversal, el alcance de la investigación fue descriptiva – correlacional. La población objeto de estudio estuvo conformado por 463 estudiantes universitarios. Para el cálculo de la muestra se utilizó una fórmula probabilística para poblaciones finitas, dando un total de 280 alumnos. El instrumento para recabar la información fue un cuestionario compuesto por 33 preguntas con tipo escala Likert y 16 de selección múltiple. Se aplicó la herramienta Google Forms para la recogida de datos. El análisis de datos se lo realizó mediante el uso del software estadístico SPSS V.25. Resultados: Se determinó que existe una correlación positiva media entre Modalidad de Estudio y Rendimiento Académico, y entre el rendimiento académico con las dimensiones tipo de aprendizaje y estilo de aprendizaje; además, se analizaron las principales características y métodos de estudio que influyen sobre su rendimiento. Discusión: Los estudiantes en las modalidades a distancia y presencial no tuvieron cambios significativos en su aprendizaje, coincidiendo con los resultados de otras investigaciones. Conclusión: En la modalidad híbrida, sí hubo mejoras en el rendimiento académico.