bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study of resonance conditions on higher harmonics in an electrical network supplying a nonlinear load
Authors: Zubova E. V. , Fedosov D. S. 
Published: September 2024

RELEVANCE. The increase in the share of high nonlinear loads in power systems, causing non-sinusoidal currents and voltages, leads to negative technical consequences and economic losses for the power system and non-distorting consumers. Currently, there are no practical recommendations on choosing the lengths of power lines for supplying high nonlinear loads considering their negative impact on power quality indicators.THE PURPOSE. The study analyzes the conditions for the occurrence of harmonic resonant overvoltages in a power supply scheme of a nonlinear load. METHODS. The main methods used for the study include the compilation of equivalent diagrams of the electrical network elements and calculation of currents and voltages in lumped-element circuits. The Fourier series decomposition is applied to analyze non-sinusoidal currents and voltages. Using simulation models in MATLAB Simulink environment, the conditions for the occurrence of higher harmonic resonances at different lengths of 35, 110, and 220 kV power transmission lines and different power ratings of the power system are determined.RESULTS. Calculated resonant lengths of overhead power lines 35-220 kV, supplying a nonlinear load, at which resonant overvoltages occur in the electrical network on higher harmonics with numbers from 3 to 49, were obtained. The resonant lengths of power transmission lines on particular harmonics were determined taking into account the impact of the power supply system reactance. The obtained combinations of resonant line lengths and system reactances are proposed to be considered in the design of external power supply schemes for nonlinear loads to eliminate harmonic overvoltages. The calculations in this study provided an explanation for the abnormal levels of currents and voltages of the 35th and 37th harmonics in the external power supply scheme of an aluminum plant.CONCLUSION. Practical recommendations are given for choosing the lengths of 35-220 kV power transmission lines in power supply systems with high nonlinear loads to eliminate resonant overvoltages. The results of determining the resonant lengths of power transmission lines agree with the data from measuring experiments in an operating power system.
Travel and the Self in Maggie Shipstead's The Great Circle
Authors: Pesce Elisa 
Published: September 2024

This article presents travel as the nexus between the two protagonists of Maggie Shipstead’s The Great Circle (2021): aviator Marian Graves, whose passion for flight and physical travels double as, and intensify, an inner journey of self-discovery, and Hadley Baxter, a contemporary Hollywood actress who interprets Marian in a biopic and, through this experience, identifies with her, expanding her consciousness and constructing herself as woman. Marian and Hadley have similar, tragic family histories and, despite living a century apart, are both subject to the violence and constraints of a patriarchal society that deprives women of agency and condemns the transgression of gender roles. Consequently, the novel deploys multiple forms of travel and travel writing to ask what it means to be a woman in the United States and explore the contribution of physical and metaphorical journey to the discovery of the self, other people and the world. While close in scope to canonical male travel narratives, I argue that The Great Circle juxtaposes different stories (Marian’s logbook, a novel and a biography based on it, and Hadley’s movie) and, therefore, different accounts of Marian’s life, to raise questions about the very possibility of knowing anything or anybody. The novel simultaneously denounces women’s objectification by presenting both Marian and Hadley as public figures constructed by others: Marian’s logbook is fictionalised and published without her consent, while Hadley exists only in the characters that she plays and the image that the tabloids project of her. Shipstead’s ambiguous use of the symbolism of the circle further complicates the novel’s epistemological inquiry by betraying expectations about continuity and closure. All circles and journeys in the novel remain open-ended and merge with one another, connecting people and experiences across space and time.
From Superhighway to Hyperreality: The Infrastructure of "Astral America"
Authors: McKenna Maxime 
Published: September 2024

During a series of road-trips undertaken in the 1970s and 1980s, the French theorist Jean Baudrillard encountered an American West that had become a laboratory of hyperreality. In his observations about “Astral America,” Baudrillard claims the perspective of an outside observer, but he exhibits a fascination for the space of the road that is characteristically American, if not at-times stereotypically so, begging the question: what is the link between postmodern theory and automobile infrastructure? This article uses Cotten Seiler’s concept of the “apparatus of automobility” (2008) to interrogate the material and discursive relations between Baudrillard’s Amérique (1986; trans. 1988) and the period in the history of American automobility in which it emerges. Just as the Interstate Highway was solidifying the private car’s supremacy, the OPEC oil embargo brought the petroleum-powered, auto-mobile ideal of the good life into crisis, opening intellectual inroads for thinking the U.S.’s hyperreal self-production while aboard the nation’s superhighways. Baudrillard's classic work of travelogue-theory invites an infrastructural account of the postmodern moment that would situate concepts from French theory and their uptake in the American academy within a context of transnationally mediated transport infrastructures.
A.K. Ramanujan’s Insightful Observations on Various Aspects of the United States of America. Looking Briefly at the Diary Entries
Authors: Das Jolly 
Published: September 2024

Attipat Krishnaswamy Ramanujan (16 March 1929-13 July 1993) travelled extensively in peninsular India, collecting folktales from rural regions. Since he was already on the move, as a folklorist and as a teacher who taught in several colleges in South India consecutively, it wasn’t difficult for him to set sail for the United States of America when he received the Fulbright Travel Fellowship and Smith-Mundt Grant in 1959, to continue with his studies in linguistics. On 1 July 1959 he boarded the Strathaird in Bombay and undertook a land-journey through France to reach Southampton where he boarded the SS Queen Elizabeth which took him to New York on 28 July 1959. He wrote about experiences and observations during this journey in his “Travel Diary, 2 to 27 July 1959, Bombay to New York”, in the anthology Journeys: A Poet’s Diary (2018). The first-ever travel overseas, to the US, was full of excitement and anxiety for the young man of thirty. This journey was the initiation for his passage to the country he was to inhabit for the rest of his life, as a teacher in the University of Chicago—a transition from the familiar world (his interior landscape, akam) to the unfamiliar country (the world outside his self, the puram). The article shall focus on Journeys: A Poet’s Diary and A.K. Ramanujan’s unpublished diary to explore his observations and experiences of life in the US. These reveal the way in which his inner self met the new space he entered, followed by his expressing, through his creative and critical self, the interface and intermingling of the two. These travel writings go beyond mere records of observations—they are cultural artifacts left behind by a truly transnational traveler — as a man from a South-Indian milieu; who had been exposed to the British system of education; who was exceptionally intelligent, a poet and critic; and, a keen observer. Theories which engage with the akam-puram paradigm, environment (Buel), culture in a liquid modern world (Bauman) and cosmopolitanism (Appiah) shall be used as tools to analyse and assess the select texts.
The Land of Heathens versus the Land of Liberty. Mark Twain’s The Innocents Abroad and Ubeydullah Efendi’s Travels
Authors: Mutluay Çetintaş S. Bilge 
Published: September 2024

Mark Twain’s (1835-1910) literary travelogue, The Innocents Abroad (1869), remarks on and/or subverts previously established interpretations of places and objects. Twain’s adopted persona allows him to assume the double role of a fool and an intellectual, simultaneously, by deploying a peculiar type of humor. By openly distaining and emphasizing certain aspects of his travel experiences, Twain’s narrator seems naïve on one hand, but a savvy social critic on the other. Twain’s account of İstanbul (Constantinople) streets, drinking Turkish coffee, and Turkish bath experience become farcical descriptions of the Ottoman Empire. His choice of words—such as “the rustiest old barn in heathendom”—also confirms his ideological viewpoint of Ottoman lands. Unlike Twain, Ubeydullah Efendi (1858-1937), who travels in the opposite direction, to the United States from the Ottoman Empire, paints a positive picture of American urban life. He spends most of his time at the Chicago World’s Fair of 1893, which he describes in detail. One could argue that since the Ottoman Empire was on the cusp of becoming the Turkish Republic, Ubeydullah Efendi’s descriptions of his American voyage were naturally written in a progressive tone. Yet, a closer inspection reveals subtle criticism, as well as an awareness of how others viewed him as an Ottoman gentleman. Thus, his portrayals do not stem from internalized Orientalism; rather, they are the result of informed observations based on his cultural experiences. Both Mark Twain’s and Ubeydullah Efendi’s journalistic travel accounts to each other’s countries cannot be separated from the ideological and rhetorical dimensions of the era’s travel writing. This presentation will focus on both narrators’ approach and gaze in a comparative manner. While Twain portrays Ottoman lands in a hostile or condescending manner, with descriptors such as “filthy,” “brutish,” “ignorant,” or “unprogressive,” Ubeydullah Efendi’s accounts are not so one dimensional. Twain’s peculiar humor and narrative attitude were obviously influenced by the political events of the time, and his views were tainted by his orientalist approach. Conversely, Ubeydullah Efendi’s straightforward depictions, and occasional humor, are connected to his personality and offer a far more realistic portrayal of late nineteenth-century America.
Novel Composites for Lightweighting in Deep Space Applications
Authors: Huebner Benjamin 
Published: September 2024

Abstract
The evolution of carbon nanotube composites, as inspired by the Materials Genome Initiative, unlocks new potential for materials sustainability in challenging deep space applications. This article describes research and development work at the Institute for Ultra-Strong Composites by Computational Design (US-COMP), a NASA Space Technology Research Institute consortium. US-COMP has developed a novel composite material with mechanical properties per unit mass that exceed state-of-the-art structural composites.
АНАЛІЗ РОЗВИТКУ РИНКУ ЗЕМЛІ ДЛЯ ТЕРИТОРІАЛЬНИХ ГРОМА
Authors: Єремейчук Станіслав , Антонова Світлана , Мартинюк Галина 
Published: September 2024

У статті вказано на необхідність ефективного використання земельних ресурсів територіальних громад для підвищення їх спроможності. Відзначено, що поряд із позитивними змінами в інституційному та законодавчому плані, існують численні проблеми, які стримують подальший розвиток земельного ринку. Наведено деякі ключові новації земельного законодавства у воєнний час, які стали як викликами, так і завданнями земельної політики. Проаналізовано основні показники ринку землі сільськогосподарського призначення в Україні за перший квартал 2023 року та надходження до бюджетів територіальних громад від сплати земельних податків. Відмічено, що за період повномасштабного вторгнення громади зазнали значних втрат, найбільші з яких зафіксовані в Харківській та Херсонській областях. Розглянуто виклики, з якими стикаються територіальні громади при управлінні земельними ресурсами, зокрема недоотримання надходжень від сплати за землю до місцевого бюджету. Наведені результати опитування «Вплив земельного ринку на добробут та відновлення громад» серед представників територіальних громад. Зроблено висновок про те, що наразі існує певний потенціал підвищення спроможності громад через покращення управління земельними ресурсами.
Critical Review of Common Issues in Classroom Procedure of Vietnamese Classroom in The New Era
Authors: Ngoc Huy Nguyen  
Published: September 2024

Lessson planning is fundamental to the success of classroom procedure and teaching practices. The current context of Vietnamese education is still constrained by various issues. From the perspective of lesson critiques, this article highlights the limitations of teacher-centered approaches and grammar translation methods, which hinder active student participation and communicative competence development. The paper critiques the excessive focus on rigid curriculum design and passive learning, advocating for a shift towards functional, communicative, and learner-centered methodologies. The core content covers the limited exposure to language practice, unequal student engagement, and the lack of personalized feedback. The paper also emphasizes the benefits of cooperative learning, which promotes interaction, peer assessment, and contextual language use. Recommendations include adopting more varied classroom activities, enhancing student motivation, and encouraging active learning strategies that cater to diverse learner personalities.
Impacto del dragado de sedimentos de la laguna de Colta en el hábitat de Chroicocephalus serranus
Authors: Cargua Inca Javier Ebelio , Hurtado Domínguez Mario 
Published: September 2024

Introducción: La laguna de Colta ubicada en las parroquias Sicalpa y Santiago de Quito del cantón Colta provincia de Chimborazo, cuenta con una extensión de 2.5 km, siendo el sector donde se realiza la práctica del dragado de sedimentos en el hábitat de la sp. Chroicocephalus serranus. Metodología: Se elaboró un diagnóstico situacional donde se determinó las actividades antrópicas que se realiza en la laguna y el tipo de dragado que se viene desarrollando; además se procedió a la toma de muestras de agua, sedimento y de la especie de ave en tres lugares comprendidos por la zona 1: parque Acuático, zona 2: San José y Raya Loma y zona 3: Santa Inés posteriormente las muestras fueron enviadas para su respectivo análisis. Objetivos: Se determinó los impactos negativos generados por el dragado de sedimentos de la laguna de Colta en el hábitat de Chroicocephalus serranus. Además, se pudo conocer el estado de conservación del hábitat a través de la identificación de los impactos. Resultados: La presencia de metales pesados como Cu, Ba, Pb, Zn, Fe y Mn con niveles superiores a los admisibles establecidos en las Normas generales de criterios de calidad para los usos de las aguas superficiales, marítimas y de estuarios lo cual significa efectos negativos sobre el hábitat de la gaviota andina (Chroicocephalus serranus). Conclusiones: El análisis de metales pesados de las muestras de sedimento, agua y ave de la laguna revela la existencia de algunos metales pesados tales como: Cu, Pb, Zn, Fe, Mn y Ba. Que pueden resultar tóxicos y perjudícales para la especie. Además, se encontraron alteraciones en los análisis de laboratorio, mismos que generan impactos negativos en el hábitat de la gaviota andina (Chroicocephalus serranus), generando contaminación química con metales pesados en los componentes del agua, nutrientes y alimento. Área de estudio general: Ambiental. Área de estudio específica: Biodiversidad. Tipo de estudio: Artículos originales.
Surgimiento temprano del turismo en el continente americano en el Siglo XIX
Authors: Ayala Castro Héctor Salvador , Velasteguí López Luis Efraín , Camacho Estrada Sara Nidhya 
Published: September 2024

Introducción: En el Siglo XIX se dieron las primeras manifestaciones de significación de turismo en Europa, con las que comenzó la era del turismo tal como se concibe hoy - viajes voluntarios por razones de placer, negocio y otros motivos y no para ejercer una actividad remunerada. En Las Américas en el Siglo XIX igualmente se presentan manifestaciones noveles de actividades turísticas. Objetivo: El objeto de esta investigación es indagar sobre el surgimiento de un turismo temprano en los países que integran el continente americano durante el Siglo XIX, identificando cuáles países y actividades turísticas fueron desarrolladas durante ese periodo histórico. Metodología: El trabajo se realizó a partir del análisis bibliográfico de diferentes materiales asociados a esta actividad, así como del método de análisis-síntesis para el arribo a conclusiones. Resultados: La investigación encontró que en Estados Unidos, México, Perú y Cuba en la primera parte de este Siglo y en Canadá, Argentina, Chile, Uruguay en la segunda parte del XIX, se producen manifestaciones de este turismo incipiente o temprano. Conclusión: No se encontraron evidencias de manifestaciones de algún tipo de turismo en otros países de América en el Siglo XIX. Así, como ocurrió en Europa, se puede afirmar que en el Siglo XIX comienza también en Las Américas directamente la historia del turismo. Área de estudio general: Turismo, Área de estudio específica: Historia del turismo
Carbon Monoxide (CO) Level Measurement Using Internet of Things (IoT) Based Drone with NodeMCU ESP32
Authors: Trisnanti Sefrina Putri , Yantidewi Meta , Deta Utama Alan 
Published: September 2024

Carbon monoxide (CO) is a dangerous gas with no odor, color, or taste and can easily mix with other air around it. This study aims to design and determine the results of measuring CO levels using a drone integrated with an MQ-7 gas sensor and an IoT-based ESP32 nodeMCU by manipulating the time and height of measuring CO levels. The method used is data acquisition in the form of a data retrieval process from the MQ-7 sensor programmed with the ESP32 nodeMCU via the ThingSpeak web. The results of measurements of CO levels in Ketintang, Surabaya air quality in the medium category at 07.00-11.00 WIB and good at 15.00 WIB. Measurement at 07.00 WIB CO levels are higher than at 11.00 WIB and 15.00 WIB. This can occur because the use of motorized vehicles and the process of burning waste in households is denser. Most of these activities are carried out close to the ground so that the higher the altitude in measuring CO levels, the lower the CO levels detected. Other factors that affect CO levels are temperature, wind speed, and weather when taking measurements. Based on the results of the study, it can be concluded that hours and altitude affect the CO levels produced.
Penghitungan Berat Nekromassa dan Cadangan Karbon di Coban Putri dan Hutan Kota Malabar Malang
Authors: Suryani Arie Achsan Wildan , Tito Sama' Iradat , Prasetyo Hamdani Dwi 
Published: September 2024

Carbon reserves in necromes can have a positive impact of decomposition processes and a negative impact from the occurrence of deforestation. Therefore, there needs to be a balance between the rate of decomposition and deforestation. The aim of this study was to estimate carbon reserves in necromes and their correlation relationship with abiotic factors in Malabar City Forest and Princess Coban. The methods used are non-desdructive sampling for dead trees and dead wood as well as desdructive sampling for litter. Abiotic factors in the form of air temperature, air humidity, Light intensity, soil ph, and soil moisture are also observed. The forest in Malabar City is 3427.43 kg and in Coban Putri it is 281.34. Carbon reserves were obtained from 47% of the necomass possessed, thus obtaining carbon reserves of 1601.89 kg in Malabar City Forest and 132.23 kg in Coban Putri. Some of the factors that affect the magnitude of carbon reserves in the observation plot include the diameter and height of dead trees, the diameter and length of dead wood, wet weight and dry weight of litter, as well as environmental factors that impact photosynthesis and decomposition processes. Environmental abiotic factors in the form of air temperature, air humidity, light intensity, soil ph, and soil moisture in Malabar City Forest and Coban Putri are in ideal conditions. Keywords: carbon stock, coban putri, malabar city forest, necromass ABSTRAKCadangan karbon pada nekromassa dapat memberikan dampak positif dari proses dekomposisi dan dampak negatif dari terjadinya deforestasi. Maka dari itu perlu adanya keseimbangan antara laju dekomposisi dan deforestasi. Tujuan dari penelitian ini adalah mengestimasi cadangan karbon pada nekromassa dan hubungan korelasinya dengan faktor abiotik di Hutan Kota Malabar dan Coban Putri. Metode yang digunakan adalah sampling tanpa pemanenan (non-desdructive sampling) untuk pohon mati dan kayu mati serta desdructive sampling untuk serasah. Diamati juga faktor abiotik berupa suhu udara, kelembaban udara, intensitas Cahaya, ph tanah, dan kelembaban tanah. Hutan Kota Malabar sebanyak 3427,43 kg dan di Coban Putri sebesar 281,34. Cadangan karbon diperoleh dari 47% nekromassa yang dimiliki, sehingga diperoleh cadangan karbon 1601,89 kg di Hutan Kota Malabar dan 132,23 kg di Coban Putri. Beberapa hal yang mempengaruhi besar kecilnya cadangan karbon pada plot pengamatan antara lain diameter dan tinggi pohon mati, diameter dan panjang kayu mati, berat basah dan berat kering serasah, serta faktor lingkungan yang berdampak pada proses fotosintesis dan dekomposisi. Faktor abiotik lingkungan berupa suhu udara, kelembaban udara, intensitas cahaya, ph tanah, dan kelembaban tanah di Hutan Kota Malabar dan Coban Putri berada pada kondisi ideal. Kata kunci: cadangan karbon, coban putri, hutan kota malabar, nekromassa