bluuebunny/crossref_metadata_2025 huggingface dataset:
Habitats and population structure of rare orchids from the genus Cypripedium in Siberia
Authors:   Peoples' Friendship University of Russia, Zheleznaya Ekaterina L. , Zverev Andrei A. ,   Tomsk State University,   Central Siberian Botanical Garden SB RAS, Stepantsova Nadezhda V. ,   Irkutsk State University
Published: November 2023

Cypripedium calceolus L., C. macranthos Sw. and C. ventricosum Sw. are rare Eurasian orchid species, whose habitats are poorly studied in Siberia. In this paper, we describe 55 sympatric and 10 separated populations of the three species, located in Russia within Republic of Buryatia, Irkutsk Region, Krasnoyarsk Territory, and Republic of Altai. Cypripedium macranthos plants dominated the most of the sympatric populations. Vegetation surveys were performed in all localities, and the collected data were analyzed using the IBIS software. We applied the phytoindication scales elaborated by Tsatsenkin and his colleagues for ecological indicator value analysis. The Cypripedium populations were characterized by high floristic diversity of their habitats; however, all of them were found in areas where both canopy density and ground cover were low. In the most of the separated populations, ontogenetic spectra of Cypripedium species corresponded to the base spectrum with a predominance of the adult vegetative and reproductive shoots.
Remarks on the spatial distribution of mycorrhiza in the roots of Epipactis papillosa (Orchidaceae)
Authors:   Internet Solutions LLC, Kuzminova Lyudmila S. , Salnikova M.M. ,   Russian State University for the Humanities, Vinogradova Tatiana N. ,   Moscow Secondary School No. 67
Published: November 2023

The article provides a description of the mycorrhiza in the roots of a generative specimen of Epipactis papillosa Franch. et Sav. (Orchidaceae). The percentage of bark cells inhabited by fungi and the intensity of mycorrhizal infection were calculated in all roots formed in 2010, 2011 and 2012 along all their length. Fungi were distributed in the roots irregularly, being concentrated in one or more zones. The possible connection between mycorrhizal development and weather conditions in corresponding years are discussed. Whereas according to the literature data E. papillosa is considered to be weakly mycotrophic species, with an average intensity of mycorrhizal infection of only 15 %, we found much higher average intensity in the studied specimen, up to 54 %. The possibility of secondary colonization of older roots by fungi in studied specimen was not confirmed.
ACTIVITY OF UKRAINIAN STUDENTS AT THE UNIVERSITY OF DERPT AT THE BEGINNING OF THE 20TH CENTURY (ACCORDING TO THE MATERIALS OF THE NEWSPAPER «RADA»)
Authors:   Taras Shevchenko National University of Kyiv, Ukraine, Kupchyk Oleh
Published: November 2023

It was found that the «Ukrainian student community» at the University of Derpt was founded in October 1905 during the revolutionary events in the country. Its official name became the «Musical and Dramatic Society of Minor Russian Students». Contributors to the Rada newspaper called it the «Society of Ukrainian Students at Dorpat University». At the time of formation, 55 Ukrainian students joined the community. It had its own management and structure – commissions (library, scientific, drama, etc.), as well as a mutual aid fund. «Ukrainian Student Community» at Derpt University periodically organized and held «Ukrainian events». During these evenings, students gave popular scientific reports on Ukrainian studies, recited poems by Ukrainian poets, performed plays, sang Ukrainian songs, and danced Ukrainian folk dances. These evenings were held during the «Shevchenko days», in memory of Mykola Lysenko, Lesya Ukrainka, Ivan Franko. Students collected funds during literary, musical and artistic evenings. They directed the collected funds to the organization of events, the purchase of Ukrainian books for the library, as well as to the monument to Taras Shevchenko. Among the problems in the activity at the beginning of the 20th century of the «Ukrainian student community» at the University of Derpt were the frequent lack of funds, the periodic lack of its own premises, the gradual decrease in the number of members of the community due to the decrease in the number of Ukrainians among the students of the University of Derpt due to the ban on graduates of the local theological seminary to enter the university. In general, the work of the «Ukrainian student community» at the University of Derpt was aimed at promoting Ukrainian culture and preserving the ethnic identity of Ukrainians. It became an integral element of «Ukrainian life» in the Baltics, which, in turn, was a component of the Ukrainian national movement against which the Russian government fought.
THE POLICY OF THE CZECH REPUBLIC TOWARDS REFUGEES OF THE RUSSIAN-UKRAINIAN WAR: MAIN TRENDS AND NEW CHALLENGES
Authors:   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Motruk Svitlana
Published: November 2023

Based on a wide range of sources, the article analyzes the Czech Republic’s policy towards Ukrainian forced migrants in the context of the full-scale Russian invasion of Ukraine, its features, key factors and dynamics of development. It is emphasized that during the war, this Central European country proved to be one of Ukraine’s best allies, consistently demonstrating comprehensive support in the international arena, in the political, military and humanitarian spheres. It has accepted a large number of war refugees, offered them financial assistance, housing, jobs, medical insurance, the opportunity to continue their children’s education, and successfully coped with the largest wave of refugees in its history, becoming the third country by the number of migrants accepted. The article examines changes in migration policy in light of new challenges, its political and social context, positive and negative effects, and the essence of the draft law Lex Ukrajina I-V (five versions), which regulates the mechanism of temporary protection and the refugee support system. The author emphasizes the important role of public associations and Ukrainian-language media, which were established in the Czech Republic and significantly facilitate the stay of Ukrainians in a foreign country, assist in initial orientation and adaptation. It covers the legal status, integration potential and problems Ukrainian migrants face in everyday life, as well as the prospects of their return to their homeland. The author emphasizes the increasingly important role of Ukrainians in the development of the Czech economy and society. Based on the analysis of research conducted by Czech scholars, the article examines the attitude of Czech citizens to the development of the situation in Ukraine, the actions of the authorities regarding the Ukrainian issue and anti-Russian sanctions. The author notes a fairly high level of public solidarity but at the same time a gradual decline in its readiness to support Ukraine against the background of a permanent decline in sympathy for Russians and antipathy for Ukrainians.
Sequencing Seismic Noise Correlations for Improving Surface Wave Retrieval and Characterizing Noise Sources
Authors: Fang Hongjian
Published: November 2023

Cross-correlating continuous seismic data is a commonly employed technique to extract coherent signals to image and monitor the subsurface. However, due largely to site effects and poorly characterized noise sources in oceanic environments, its application to ocean-bottom seismometer (OBS) recordings often requires additional processing. In this contribution, we propose a method to improve the quality of the retrieved surface waves from OBS data and characterize the noise sources. We first cluster the pre-stack noise cross-correlation functions (NCFs) based on a sequencing algorithm, followed by selectively stacking those consisting of coherent and stable signals that are consistent with predicted surface-wave arrival times. Synthetic tests show that the sequenced NCFs can be used to recover the spatial and temporal distribution of noise sources. Applying the method to an OBS array offshore California increases the signal-to-noise ratios of the obtained Rayleigh waves. In addition, we find that the annual temporal distribution of selected NCFs with frequencies ranging from 0.04 to 0.1 Hz is nearly homogeneous during the recording period. In contrast, many NCFs excluded for stacking are temporally clustered. This method has the potential to be applied to other OBS recordings or possibly onland deployments, thus helping to obtain high-quality surface waves and to analyze temporal noise source characteristics.
A “Modest” Primitivist Theory of Truth: The Ineffability of Truth, Effability of the Correspondence Relation
Authors: Simionato Marco
Published: November 2023

The primitivist theory of truth, i.e., the view that truth cannot be analysed in more fundamental terms, has been cleverly revamped by Jamin Asay, who has combined a primitivist approach to the concept of truth with a deflationary approach to the (metaphysical) property of being true. This paper aims to adjust Asay’s primitivist theory to consistently include the primitiveness of the (pre-theoretical) correspondence relation, grasped by our correspondence intuition, alongside the primitiveness of truth. In the process, I apply a thesis by Rögnvaldur Ingthorsson, according to which the correspondence of beliefs to facts (broadly construed) can occur with no commitment to a correspondence theory of truth. Then I argue why Asay’s theory might not be able to account for the primitiveness of the pre-theoretical correspondence relation. Finally, I use a suggestion by André Kukla concerning the possible entailment between an ineffable insight and its effable consequences, to build a revised primitivist theory of truth.
Neuropathic Pain in Critical Covid-19 illness Survivors: A Narrative Review
Authors: Aliaga Jorge , Ojeda Antonio , Comino-Trinidad Oscar , Cuñat Tomás , Arias Marilyn , Calvo Andrea
Published: November 2023

Introduction: The COVID-19 pandemic has resulted in a significant number of cases worldwide, leading to a substantial increase in Intensive care unit (ICU) admissions. Survivors of critical illness are known to experience long-term physical, cognitive, and psychological impairments. Chronic pain is also a prevalent complication, and specifically, neuropathic pain (NP) is strongly linked to a diminished quality of life. This narrative review aims to investigate the incidence, causes and manifestations of NP in critical illness COVID survivors. Methods: A comprehensive search of the Pubmed database was conducted on May 31, 2023, using the keywords "Covid-19" OR "Sars-cov-2" combined with "neuropathic pain" and "critical care" OR "intensive care unit" to identify relevant publications in English or Spanish pertaining to adult human subjects. The search process adhered to the recommended flowchart format outlined in the PRISMA 2020 statement. Results: The primary search yielded 26 results. Eight results were excluded as they did not pertain to COVID-19 pain. Discussion: Intensive care survivors can develop new onset pain and chronic pain though various mechanisms. In the case of critical illness COVID-19 survivors, pain may arise due to viral neurotropic potential, immune-mediated reactions, and microvascular complications. Studies have reported new-onset upper extremity NP, with ulnar neuropathy being the most prevalent, followed by brachial plexus, axillary, and median neuropathies. Lower limb NP particularly sciatic neuropathy has also been documented, along with peroneal nerve, meralgia paresthetica, and femoral neuropathy. Cranial neuropathies, such as facial palsy and trigeminal neuralgia, have been observed in case series. Additionally, widespread pain frequently associated with critical illness neuromyopathy may be present. Notably, COVID-19 survivors with critical illness may experience nociplastic pain and conditions related to central sensitization, posing challenges in distinguishing them from those with Long-COVID syndrome. Conclusion: Further research is crucial to gain a comprehensive understanding of the neurological consequences arising from critical COVID-19 illness. Healthcare professionals should maintain a high suspicion index for NP in this population. Advancing our knowledge of NP in COVID-19 survivors can help develop effective strategies to enhance overall patient outcomes.
FLOW PATTERNS OF CAROTID ATHEROSCLEROTIC PLAQUES USING A NEW US TECHNOLOGY: VECTORIAL DOPPLER (V FLOW ®)
Authors: Forcada Pedro
Published: November 2023

Cardiovascular disease caused by atherosclerosis is the first cause of mortality and disability around the world. To understand the pathophysiology of the atherosclerotic plaques and specially their hemodynamics, the changes with their evolution or with the therapeutic interventions are essential to develop effective diagnostic and therapeutic interventions to stop the cardiovascular pandemics. Ultrasound is a cheap, simple and accessible methodology that experienced in the last three decades an astounding development in terms of technology and diagnostic precision. In the field of doppler ultrasound, Power doppler and color doppler enabled a detailed evaluation of cardiac valves, arteries and veins that conducted to impressive diagnostic precision and to enable advances in therapeutic interventions. Recently a new doppler technology based on processing in blocks the ultrasound information and transduce it into a vector representation of the displacement of blood flow in the space, named VFLOW®, conducted to a new field of investigation of complex flow patterns, by means of the instantaneous measurement of speed, flow gradients, wall shear stress and vessel wall stiffness. We conducted an investigation of different hemodynamic patterns according to plaque structure and vascular regional hemodynamics. Two main groups of plaques have been described, the soft ones (“expanding”) and the stiff or hard ones (“non expanding”). The first type has been associated with acute cardiovascular complications and increased cardiovascular risk and just the opposite, chronic lesions in stable disease to the later. We analyze in this paper the characterization of both types of plaques, their hemodynamic patterns and in particular, for the first time, the behavior of the wall shear stress at different sectors of the plaques which may be linked to their development and/or complications. This technology deserves further development face to future applications in the diagnosis and treatment of atherosclerotic vascular disease.
Точність вимірювання механічних величин з використанням теорії нечітких множин
Authors: Катаєв Д.А. , Квашук Д.М. , Думбрава С.М.
Published: November 2023

Пропозиції щодо використання теорії нечітких змінних для вимірювання механічних величин мають перспективу у сфері формалізованої інформації, коли існує невизначеність, а традиційними методами отримати чіткі параметри вимірювальної величини досить складно у зв’язку з рядом об’єктивних причин. У статті представлені результати теоретичного дослідження можливостей вимірювання механічних величин з використанням засобів  теорії нечітких змінних. Розглядається координатно-вимірювальна рука (КВР) як інструмент для контролю точності розмірів деталей, а також перетворювач обертальних параметрів електродвигуна. Кожен із способів вимірювання зазначених фізичних величин має свої особливості контролю точності та достовірності отриманих даних. Тому, з метою дослідження властивостей теорії нечітких множин, під час її застосування у різних вимірювальних засобах, було проведено ряд експериментів над моделями вимірювання обертального моменту та геометричних характеристик фізичних об’єктів. Для цього висвітлено  принцип роботи КВР та її компонентів, описано методи та інструменти, які використовуються для калібрування КВР, з метою забезпечення її високої точності та надійності. Представлено методи та засоби вимірювання обертальних моментів електродвигунів. Проведено моделювання точності отриманих даних, з використанням зазначених вимірювальних методик, для цього було використано ряд математичних моделей, які враховують похибку вимірювальних засобів. Наведено порівняння результатів дослідження, що характеризують інструменти теорії нечіткої логіки, як універсальний засіб для визначення достовірності отриманих даних під час вимірювання механічних величин.
Methods of applying artificial intelligence in software-defined networks
Authors: Kulakov Y.O. , Korenko D.V.
Published: November 2023

This work is devoted to the review of artificial intelligence application methods in enterprise networks using SDN technology. The paper examines the features and methods of using AI in these networks, as well as identifies potential problems that may arise.

The paper provides an overview of the main features of AI in enterprise SDN networks. AI has been found to automate many processes in the network, such as routing, monitoring, bandwidth management, and more. Using AI helps improve network efficiency, reduce costs, and improve security.

Potential problems that may arise when using AI were also highlighted. In particular, questions arise regarding data security and privacy, as well as ethics and responsibility for the actions of AI-based systems.

In general, the work puts forward the idea of using artificial intelligence in enterprise networks using SDN technology to improve network efficiency and ensure security. The methods of applying AI in these networks are reviewed, potential problems are identified, and prospective directions of research are outlined.

This work provides an overview of the features and capabilities of AI in enterprise SDN networks, and also lays the foundation for further research in this area. The implementation of artificial intelligence in enterprise networks is an urgent task, as it helps to improve the efficiency and security of networks and opens up new opportunities for their development.
Аналіз нелінійності функції перетворення аналого-цифрового перетворювача
Authors: Стахова А.П. , Квасніков В.П.
Published: November 2023

Дослідження спрямоване на аналіз нелінійності аналого-цифрового перетворювача (АЦП) у цифрових засобах вимірювання, таких як осцилографи, мультиметри та аналізатори спектра. Нелінійність АЦП може призводити до недостатньої точності, спотворень та неоднорідності перетворення сигналу. У дослідженні розглядаються фактори, які спричиняють нелінійність АЦП, та методи оцінки її впливу на результати вимірювань. Також розглядаються параметри, пов'язані з нелінійністю АЦП, які нормуються у технічних описах, що дозволяють оцінити рівень нелінійності та зробити відповідні корекції під час обробки даних.
РОЗРОБКА МЕТОДУ ДЕКОДУВАННЯ БЛОКОВИХ КОДІВ НА ОСНОВІ ПРОЦЕДУРИ ДИФЕРЕНЦІЙНОЇ ЕВОЛЮЦІЇ
Authors: Козловський Валерій , Штомпель Микола , Лисечко В , Комар Олексій , Дробик В
Published: November 2023

Запропоновано підхід до м’якого декодування блокових кодів, який заснований на визначенні найбільш надійного базису породжувальної матриці та застосуванні процедури диференційної еволюції. Вибір даної процедури пошукової оптимізації здійснено в результаті проведеного аналізу особливостей та наявних обмежень процедур еволюційної оптимізації. Представлено схему та сутність основних етапів розробленого методу м’якого декодування блокових кодів. На першому етапі формується жорстке рішення та обчислюється синдром для прийнятого слова. Після цього здійснюється ранжування прийнятих символів за надійністю та перетворення породжувальної матриці блокового коду у відповідний найбільш надійний базис. Далі застосовується процедура диференційної еволюції для пошуку найбільш імовірного переданого інформаційного повідомлення та відповідного двійкового кодового слова. Декодування завершується зворотним перетворенням знайденого найбільш імовірного двійкового кодового слова шляхом перестановки відповідних елементів. Показано, що ключовим етапом декодування є пошук переданого кодового слова з використанням процедури диференційної еволюції, а формування найбільш надійного базису породжувальної матриці блокового коду дозволяє підвищити ефективність декодування. З метою можливості технічної реалізації даного методу декодування розроблено відповідний алгоритм та наведено основні його кроки. Результати роботи можуть бути використані при впровадженні технологій радіозв’язку нового покоління для підвищення достовірності передавання службових повідомлень. Також рекомендується використовувати отримані результати при вирішенні задачі декодування інших завадостійких кодових конструкцій, що використовуються у сучасних телекомунікаційних технологіях.
МІКРОСМУЖКОВА АНТЕННА РЕШІТКА ДЛЯ НАЗЕМНОГО СЕГМЕНТУ СИСТЕМИ КЕРУВАННЯ БПЛА
Authors: Щербина Ольга , Задорожний Олександр , Торубара Родіон
Published: November 2023

Антени, що використовуються як на БПЛА, так і в системах їх керування повинні бути низькопрофільними і компактними. Зі збільшенням швидкості передачі даних і тенденцією до мініатюрних електронних схем для бездротових цифрових додатків, антени, які необхідні для цих додатків, повинні мати невелику вагу та габарити, легко монтуватися і мати достатньо широку смугу пропускання. Ці вимоги можна задовольнити за допомогою мікросмужкових антенних решіток. Антена має бути низькопрофільною, простою та недорогою у виготовленні, а також вона повинна легко монтуватися на поверхні різних форм. У статті розглядаються принципи побудови плоских лінійних еквідистантних синфазних антенних решіток із статичним амплітудно-фазовим розподілом. Використовуючи ці принципи, була побудована мікросмужкова плоска антенна решітка. Результати моделювання мікросмужкової антенної решітки розмірністю 4 х 2, елементами якої є шлейф-вібратори, показали можливість формування такою решіткою діаграми спрямованості з достатньою для поставлених цілей шириною на рівні випромінювання половинної потужності. При розміщенні антени для роботи з вертикальною поляризацією ширина діаграми спрямованості в горизонтальній площині склала 18 град, у вертикальній площині 37,5 град. При цьому рівень бічних пелюсток не перевищує значення -10 дБ. Коефіцієнт підсилення мікросмужкової антенної решітки на центральній частоті роботи досягає 10,17 дБі. Досягнуте гарне узгодження стандартної коаксіальної лінії живлення, опір якої дорівнює 50 Ом, з мікросмужковою антенною решіткою. Значення коефіцієнту стоячої хвилі за напругою залишається меншим ніж 2 у смузі частот 250 МГц. На центральній частоті роботи у 5,8 ГГц його значення складає 1,25.
Looking back and ahead: reporting and reflecting on GAZUFES
Authors:   Gazi University, Türkiye, Aşık Asuman , Finardi Kyria ,   Federal Universidade do Espirito Santo, Brazil
Published: November 2023

Virtual exchange (VE) between different English language teaching (ELT) contexts can afford opportunities to develop intercultural communicative competence (ICC) while also offering a window to reflect on different realities in terms of ELT. To this end, two ELT programmes integrated a VE project into their syllabi to provide pre-service teachers with opportunities to experience VE with reflection and development of ICC. The present account aims to describe and reflect on the GAZUFES (Gazi University and UFES University) VE project that involved pre-service teachers, tutors, and teacher trainers in a university in Brazil and another in Türkiye. GAZUFES was in turn part of the large-scale Erasmus+ KA3 Policy Experimentation European Virtual Innovation and Support Networks for Teachers (VALIANT) project. The exchange had some positive outcomes, but the sudden return to in-person classes at the end of the pandemic in the Brazilian university negatively affected the integration of GAZUFES into the Brazilian curriculum and the number of participants from Brazil. Despite the unequal number of students involved in the project, those who participated were very motivated and engaged in reflective and stimulating interactions.
Self-Initiated Academics Work Adjustment: A Systematic Literature Review
Authors: Kalmey Farah
Published: November 2023

Expatriation abroad for work and leisure is becoming the norm these days. This necessitates individuals to adjust to life in their new destination and work environment. This paper focuses on presenting a systematic literature review of how the phenomena of Self-Initiated Academics (SIEs) adjust to their work environment. Method: A systematic literature search was conducted by examining articles published in the field of SIE academics. No restrictions were placed on the date of publication because of the nascent nature of the subject of study. The following electronic databases were searched, where language was restricted to only English: Business Source Complete, Academic Search Ultimate, Scopus, Web of Science, and PsycINFO. Result: The result shows that SIEs face challenges that could affect their adjustment to life in a new country, culture, and work. Among these factors are family, local language proficiency, interaction with local hosts and expatriates, prior international work experience, and trainings that are provided at the workplaces. The differentiated treatment of expatriates based on their looks and the passport they hold by the HCNs (host country nationals) is a significant issue that was identified as well.
Study of the Population Variability of Two Chrysichthys Species in Six Aquatic Ecosystems in Côte d'Ivoire
Authors: Coulibaly T.A.S. , Adepo-Gourene A.B.
Published: November 2023

In Côte d'Ivoire, the genus Chrysichthys are subject to intense exploitation pressure and may be threatened by overfishing. The establishment of a sustainable management program for this resource requires in-depth knowledge of this fish. The population relationships were determined by evaluating the morphological variability of the two species of the subgenus Chrysichthys, which was identified in six rivers. Forty-one morphological measurements were carried out on 167 specimens of the species C. maurus and 160 specimens of the species C. nigrodigitatus. These descriptors were subjected to discriminant factor analysis and classification analysis. Within the C. maurus species, specimens from the Bia River and the Aby Lagoon show few morphological differences. These two populations are distinct from the Ebrié Lagoon and the Bandama River. Specimens of the species C. nigrodigitatus can be divided into three distinct groups. The Bia River population occupies an intermediate position between the lot formed by the Agneby River and the Ebrié Lagoon populations and the lot formed by the Bandama River, the Aby Lagoon, and the Grand-Lahou Lagoon populations. Within each lot, the specimens show a great morphological resemblance (similarity). The similarities of the subgenus Chrysichthys could be explained by a potential capacity for exchange of individuals between rivers. The differences between populations would indicate the probable existence of phenotypic plasticity linked to their environment.
Contribution of Aeromagnetic Data to the Structural Discontinuities Identification of Black Volta Catchment Aquifer System in Côte d'Ivoire
Authors: Kouame Armel Kouadio , Youan Ta Marc , Akokponhoue Bertrand Houngnigbo , De Lasme Omer Zéphir , Kouamé Loukou Nicolas
Published: November 2023

This paper focuses on improving the structural knowledge of the fissured aquifers of the Black Volta catchment in Côte d'Ivoire based on the mapping of magnetic lineaments, which represent magnetic discontinuities such as magmatic body contacts or tectonic faults. Four filtering methods, pole reduction (equator), gradient (vertical and hori-zontal), upward extension, and angle tilt, were applied to the residual magnetic field map to extract magnetic discontinuities while using the Oasis Montaj (Geosoft) program. Euler deconvolution coupled with the analytical signal provided, in addition to the horizontal location of the magnetic contacts, is an indication of their depths. The resulting structural map contains 458 structures, with lengths ranging from 9.03 to 66.54 km. Three directions, NW-SE, E-W and NE-SW, were detected with a predominance of the NW-SE direction. Depths estimated by Euler solutions range from 6.8 to 2847 m. This map is consistent with many faults already recognised or assumed by traditional structural studies and tectonic events affecting the Ivorian basement. These results contribute significantly to the improvement of the structural map of the Black Volta Basin in Côte d'Ivoire. In addition to the major known tectonic faults, numerous lineaments, particularly those at depth, have been highlighted by the present study.
Estrutura de propriedade no Brasil: Evidências empíricas no grau de concentração acionária
Authors: Dami Anamélia Borges Tannus , Rogers Pablo , Ribeiro Kárem Cristina de Sousa
Published: November 2023

Este estudo investiga se existem diferenças de rentabilidade, valor de mercado, estrutura de capital, risco e tamanho do ativo em relação ao grau de concentração acionária de empresas brasileiras não-financeiras, listadas na Bovespa, entre os anos de 1997 a 2001. Como metodologia o grau de concentração acionária foi dividido em três categorias – dispersa, dominante e majoritária – e analisaram-se as diferenças das variáveis investigadas entre essas categorias, pelos métodos estatísticos de Análise de Variância Paramétrica e Não-Paramétrica. Conclui-se que em mercados instáveis há maior concentração de propriedade pela relação de dependência entre performance e concentração acionária.
Teletrabalho: Uma revisão integrativa da literatura internacional
Authors: Leite Ana Luiza , Lemos Dannyela da Cunha , Schneider Wilnei Aldir
Published: November 2023

Objetivou-se analisar a produção científica disponível em bases de dados internacionais sobre o teletrabalho, com o intuito de verificar o volume da produção e identificar o foco de estudo dos artigos, por meio da revisão integrativa. A produção científica é crescente, com grande quantidade de artigos de revisão (12). Em relação aos artigos empíricos, com abordagem predominantemente quantitativa, nota-se a baixa publicação em organizações públicas. O foco dos estudos está na busca de impactos causados pela implementação do teletrabalho ao trabalhador e à organização. Identifica-se que há poucos estudos de cunho longitudinal e poucos combinando os diversos atores envolvidos no teletrabalho, principalmente em relação às equipes de trabalho.
Zora Neale Hurston’s Trans-Corporeal Imagination: A Reading of Their Eyes Were Watching God
Authors:   The Criticism and Theory Society of Korea, Kim Hyo Seon
Published: November 2023

This study examines Zora Neale Hurston’s Their Eyes Were Watching God through the lens of Stacy Alaimo’s concept of Trans-Corporeality. The recent emergence of materiality in feminist thought has been prompted by the debate around the linguistic turn and its social constructionist models. Postmodernism and post-structuralism have enriched feminist theory to deconstruct the biological determinism and the dichotomies of nature/culture, matter/mind, and female/male. However, these theories have perpetuated Western dualism by keeping women away from nature and disregarding the materiality of bodies. Alaimo introduces the concept of Trans-Corporeality as an epistemological zone that explores the material interchanges between bodies and the wider nonhuman environment.
This paper has two primary objectives. First, employing Alaimo’s concept as a framework, it examines the material transit between human bodies and the environment within the novel. It redefines Hurston’s environmental vision and the political nature of the text. Second, it remaps the geography of criticism about the novel via the material turn’s interpretations of biological essentialism as well as social constructionism. There has been a schism in Hurston criticism between identity politics over African American folk culture and post-structural interpretations of race and gender. This paper argues that by focusing on the microscopic interactions between the human and nonhuman worlds, it is possible to bring about substantial change in the dominant scholarship that appear irreconcilable.
Correlation Analysis of Stress with Increased Blood Pressure in Hypertensive Farm Laborers in the Mumbulsari Jember Health Center Working Area
Authors: Wiji Astuti Ida Srisurani , Kusumaning Rahenie Fevi Meyta , Hermansyah Yuli
Published: November 2023

Hypertension has a high prevalence of patients in the world, as well as in Mumbulsari Jember District. This is due to many risk factors for the incidence of hypertension and doesn’t cause significant symptoms. Psychological stress is one of the factors causing hypertension. Work, economic, and social problems are triggers for stress. This is experienced by farm laborers with complex problems that cause psychological stress conditions. The purpose of this study was to determine whether there is a correlation between stress and increased blood pressure in hypertensive farm laborers in the Mumbulsari Jember Health Center Working Area. This research is an analytic observational research with cross sectional study design. The sampling method was convenience sampling. The data used were primary data (Self Reporting Questionnaire 20 (SRQ-20)) and secondary data (medical records of patients in Puskesmas Mumbulsari Jember). The results of this study showed normal psychology, namely in 11 respondents (42.3%) experiencing stage 1 hypertension conditions and 15 respondents (57.7%) experiencing stage 2 hypertension. SRQ-20 results identified mental distress, namely 23 respondents (60.5%) experienced stage 1 hypertension and 15 respondents (39.5%) experienced stage 2 hypertension. The results of the analysis showed there was no significant correlation between stress and increased blood pressure in hypertensive farm laborers in the working area of the Mumbulsari Jember Health Center with a ρ-value of 0.151 (ρ>0.05). This study concluded that there is no correlation between stress and increased blood pressure in hypertensive farm laborers in the Mumbulsari Jember Health Center Working Area.
Keywords: Hypertension, Stress, SRQ-20, Farm Laborer
Analisis Sifat Fisiologi Dalam Daun Sebagai Bahan Seleksi pada Beberapa Klon Kopi Arabika (Coffea Arabica L.)
Authors: Setyawan Eko Bagus , Subroto Gatot
Published: November 2023

The coffee plant (Coffea) is one of the main types of plants in Indonesian society. Coffee plantations in Indonesia are very influential on the national economy. Several types of Arabica coffee clones began to be developed in order to have certain resistance to overcome attacks by various OPT which had a considerable impact on harvest success. The existence of resistance genes in plants, suitability with virulent genes and environmental influences become obstacles in making coffee clones that are resistant to certain pests. The physiological properties of coffee plants will affect the rate of growth and development of plants so that it will have an impact on their production. Selection of plant varieties is carried out to obtain certain superior characters with high yield potential. An analysis of the physiological properties must be carried out to identify and determine the desired selection criteria. This research was conducted at the Laboratory of the Faculty of Agriculture, University of Jember in June – end, using a single factor Completely Randomized Design (CRD), namely several Arabica coffee clones. Arabica coffee clone consists of 15 clones. Each clone was repeated three times, so that in this experiment there were 45 experimental units. Observational data obtained were analyzed using variance. If there is a significant difference between the treatments then proceed with Duncan's multiple range test at the 5% level. Based on the data and discussion of the research that has been done, it can be concluded that the fifteen arabica clones have different characteristics. The best Arabica coffee clone is the Sigararutang coffee clone which has a high value with (76.76 mg/g) chlorophyll content, (4.15 mg/g) flavonoid content, (7.07 mg/g) phenol content, ( 0.89 mg/g) dissolved protein content and (86.94 mg/g) antioxidant content.

 

Keywords: Coffee clones, chlorophyll, flavonoids, phenols, soluble proteins, antioxidants
Keragaman Serangga Hama dan Musuh Alami Lahan Pertanian Padi Organik (Oryza Sativa L) Desa Rowosari Kecamatan Sumberjambe Kabupaten Jember
Authors: Purnomo Hari , Parawangsa Moh. Dana
Published: November 2023

The application of organic rice farming systems is a solution to the negative impacts of using chemicals in the application of conventional farming systems. Organic rice cultivation cannot be separated from the presence of insect pests that attack cultivated plants. Naturally, in an ecosystem that is still good, natural enemies are already present in nature without human intervention. The existence of natural enemies in a field can suppress the existing population of insect pests, so that their presence is very helpful in maintaining the balance of the existing insect pest populations. The stability of insect populations in an agricultural ecosystem is largely determined by the high diversity of insect pests and natural enemies found in a field. Thus there is a need for research on the diversity of insect pests and natural enemies as information about which insect families are found on organic rice farming land in Rowosari Village, as well as a consideration for farmers in applying appropriate control methods. This study used yellow pan trap, sweep net and vacuum cleaner insect monitoring tools. The research was conducted on 3 observation plots in the organic rice fields of Tani Jaya II Group, Rowosari Village, Sumberjambe District, Jember Regency. Observations were made 10 times from the vegetative phase to the generative phase of rice aged 7 to 77 days after planting. Observational data were then identified and then analyzed using the Shanon-Wiener Diversity Index (H), Evenness Evenness Index (E), Simpson Dominance Index (D), and Margalef Species Richness Index (R). The results showed that there were 7 families of Pest Insects found on organic rice farming in Rowosari Village, including Pyralidae, Alydidae, Grylidae, Cicadellidae, Chrysomelidae, Acrididae, and Nymphalidae. Natural Enemy Insects found were 9 families including Coccinellidea, Coenagrionidae, Gomphidae, Penttomidae, Meoidae, Miridae, Ichneumonidae, Staphylinidae, and Sciomyzidae. Neutral insects found were as many as 4 families, including Muscidae, Vespidae, Tephritidae, and Drosophilidae. The population of insect pests and natural enemies of organic rice farming land in Rowosari Village is quite balanced with a Diversity Index (H') of 2.32 and Species Richness Index (R) of 2.98, Evenness index (E') of 0.77 which is in the almost even and Dominance (D) 0.13 which means not dominating.
O discurso nas fronteiras do social
Authors: Lagazzi Suzy , Oliveira Guilherme Adorno de , Santos Rogério Luid Modesto dos , Ferraça Mirielly , Anjos Liliane Souza dos , Benayon Flavio da Rocha , Osthues Romulo Santana
Published: November 2023

Este artigo apresenta o percurso do grupo de pesquisa O discurso nas fronteiras do social: diferentes materialidades significantes e tecnologias de linguagem. Num trajeto de quase 20 anos, o grupo tem como fio condutor a discussão do social em suas diferenças constitutivas, trabalhando a resistência do sujeito em objetos simbólicos diversos. Sob a perspectiva da Análise do Discurso Materialista, damos especial relevo, aqui, a análises que dão visibilidade a sentidos em confronto em nossa sociedade, em práticas coercitivas muitas vezes normalizadas como necessárias, marcadas por relações de força que nem sempre se mostram em sua violência simbólica.
Event-triggered model predictive tracking control of aero-engine with varying prediction horizon
Authors: Peng Yu , Xu Ning , Li Peng , Liu Shuoshuo , Zhao Xudong
Published: November 2023

Aero-engine is a complex thermal-mechanical system with strong nonlinearity, uncertainty, and time variation. Thus, it is crucial to design an effective controller for such a complex system to obtain the desired performances of the aero-engine. In recent years, model predictive control (MPC) has shown great potential in dealing with control problems with complex constraints of multi-variable systems, which has been applied to aero-engine control, achieving good results. Furthermore, the MPC strategy using an event-driven mechanism is good at balancing system resources and ensuring system control performances. In this paper, the problem of event-triggered MPC for aero-engine systems with bounded disturbances is studied. Firstly, an event-triggered strategy with a dynamic forced-trigger mechanism is proposed. Then, an MPC algorithm based on an event-triggered mechanism is designed. Finally, an application to the JT9D aero-engine model provided by T-MATS verifies the effectiveness of the designed algorithm. It is shown that the calculation load is significantly reduced, which proves the superiority of this method.
Revisiting the nexus between remittances and financial sector development in Nigeria
Authors: Nadabo Yusuf Shamsuddeen
Published: November 2023

Purpose ― The study aims to investigate the impact of remittances on financial sector development in Nigeria using data from 1990 to 2021.Method ― The study examines the variables' relationship using the Autoregressive Distributed Lag (ARDL) and Toda Yamamoto (TY) Causality.Findings ― The study finds that remittances have a positive and significant long-run impact on financial sector development. Total reserves and imports of goods and services have a negative and significant long-run impact. In the short run, remittances and deposit interest rates positively and significantly impact financial sector development, while total reserves and total population have negative and significant impacts. The Toda-Yamamoto causality result indicates a two-way causal relationship between financial sector development and remittances.Implication ― The study recommends that the government employs policies encouraging channeling remittances through a formal banking system, as well as ensuring that such remittances received are channeled to finance productive investment, hence financial development.Originality ― The novelty of this research relates to the use of the three main indicators of remittances in an economy, which are the import of goods and services, total reserves, and deposit interest rates, to examine its impact on financial sector development in Nigeria
Labor market distortions in major emerging-market economies: Some CGE estimates
Authors: Liboreiro Pablo R.
Published: November 2023

Purpose ― In the present study, the effects of labor market distortions on economic structure and efficiency are estimated for seven emerging-market countries: Brazil, China, Indonesia, India, Mexico, Russia, and Turkey. Methods ― The estimates are based on a computable equilibrium (CGE) model that allows simulation of the inter-industry links of 56 industries plus a sector representing the rest of the world from data collected in the World Input-Output Database (Release 2016) for the period 2000-2014. Findings ― The results show that wage differentials appear to be distortionary, especially in the cases of countries with high wage-income inequality. Moreover, it seems that labor market distortions in emerging-market countries are subject to the rural-urban dichotomy and urban labor-market imperfections. Finally, the results show that the removal of wage differentials affects the terms of trade, which are improved in most but not all cases.Implication ― The conclusions of the present study have policy implications. In countries where the rural-urban dichotomy is the main distortion in labor markets, increasing urbanization can stimulate efficiency; when this is not the case, further reform of urban labor markets is needed. However, it cannot be ruled out in advance that a policy aimed at enhancing labor mobility may have a negative impact on the terms of trade. Originality ― The estimation method used in the present study presents certain advances over others found in the literature, as it becomes possible to estimate the effects of labor-market distortions while considering the interdependencies between different sectors, as well as to plausibly estimate the effects on trade. The present study also uses a large quantity of data, which is expected to add robustness to the study’s conclusion.
Mathematical and Statistical Review of NMR Time Domain Data Pre-Processing
Authors: Jiang Aixiang
Published: November 2023

Nuclear Magnetic Resonance (NMR) and its various forms are extensively utilized in both research and clinical settings to analyse molecules. NMR data pre-processing, while essential to NMR data analysis, can be uniquely complex. Despite the availability of software tools, understanding these processes can be challenging, complicating the selection of appropriate pre-processing steps. In this review, we elucidate pre-processing steps in the time domain from a mathematical and statistical perspective, explaining direct current offset removal, eddy current correction, shift and linear prediction, weighting, zero filling, and domain transformation using plain language and fundamental mathematical formulas. Our objective is to clarify these processes in simple terms and provide general guidance.
Development of a Novel Flight Time Matrix for Nondestructive Evaluation Using Acousto-Ultrasonics
-A Case Study of Multilayered Armor Plates Damage Detection
Authors: Tankersley Stephen James , Qi Gang
Published: November 2023

Non-destructive testing is an emerging need in manufacturing processes and in service of ballis-tic armor plates. It has been shown that acoustic emission and ultrasonics are among the most applicable techniques. However, these techniques often require relative sophisticated processing and strong tech background for the evaluators. The purpose of the present work is to develop a flight time based algorithm and to demonstrate this algorithm using commercial multilayered armor plates.

We proposed a novel concept of flight time matrix (FTM). In this work, the proposed FTM was verified first numerically. The numerical simulation revealed perfect results which showed that FTM can be used to assist the nondestructive evaluation of ballistic armor plates using acous-to-ultrasonics. Two donated commercial ballistic armor plates were sought for a case study where artificial defects were prepared. The results of FTM were reasonably well. The artificial defects were clearly identifiable in one directional location array and FTM contour graphs. More com-prehensive superimpositions of flight time vs location and FTM contour plots can be advanced to a better visualization of the defect presence. The resolution of FTM method is in the range of submillimeter or less. This study demonstrated that AU (acousto-ultrasonics) technique is a field applicable and yet reliable tool for inspection of the hidden defects in body armors. A broader merit of the proposed FTM algorithm is that it may promote the development of specific tools/device for nondestructive evaluations field.