bluuebunny/crossref_metadata_2025_split huggingface dataset:
Separation characteristics between time domain and frequency domain of wireless power communication signal in wind farm
Authors: Wan Jie , Yao Kun , Peng E. , Cao Yong , NIU Yuguang , Yu Jilai 
Published: January 2020

AbstractUnderstanding the intrinsic characteristics of wind power is important for the safe and efficient parallel function of wind turbines in large-scale wind farms. Current research on the spectrum characteristics of wind power focuses on estimation of power spectral density, particularly the structural characteristics of Kolmogorov’s scaling law. In this study, the wavelet Mallat algorithm, which is different from the conventional Fourier transform, with compactly supported characteristics is used to extract the envelope of the signal and analyze the instantaneous spectral characteristics of wind power signals. Then, the theory for the change in the center frequency of the wind power is obtained. The results showed that within a certain range, the center frequency decreases as the wind power increases by using enough wind farm data. In addition, the center frequency remains unchanged when the wind power is sufficiently large. Together with the time domain characteristics of wind power fluctuation, we put forward the time-frequency separation characteristics of wind power and the corresponding physical parameter expressions, which corresponds to wind speed’s amplitude and frequency modulation characteristics. Lastly, the physical connotation of the time-frequency separation characteristics of wind power from the perspective of atmospheric turbulent energy transport mechanism and wind turbine energy transfer mechanism is established.
X chromosome inactivation in human development
Authors: Patrat Catherine , Ouimette Jean-François , Rougeulle Claire 
Published: January 2020

ABSTRACT
X chromosome inactivation (XCI) is a key developmental process taking place in female mammals to compensate for the imbalance in the dosage of X-chromosomal genes between sexes. It is a formidable example of concerted gene regulation and a paradigm for epigenetic processes. Although XCI has been substantially deciphered in the mouse model, how this process is initiated in humans has long remained unexplored. However, recent advances in the experimental capacity to access human embryonic-derived material and in the laws governing ethical considerations of human embryonic research have allowed us to enlighten this black box. Here, we will summarize the current knowledge of human XCI, mainly based on the analyses of embryos derived from in vitro fertilization and of pluripotent stem cells, and highlight any unanswered questions.
Surgical performance when inserting non-locking screws: a systematic review
Authors: Fletcher James W.A. , Wenzel Lisa , Neumann Verena , Richards R. Geoff , Gueorguiev Boyko , Gill Harinderjit S. , Preatoni Ezio , Whitehouse Michael R. 
Published: January 2020

Billions of screws are inserted by surgeons each year, making them the most commonly inserted implant. When using non-locking screws, insertion technique is decided by the surgeon, including how much to tighten each screw. The aims of this study were to assess, through a systematic review, the screw tightness and rate of material stripping produced by surgeons and the effect of different variables related to screw insertion. Twelve studies were included, with 260 surgeons inserting a total of 2793 screws; an average of 11 screws each, although only 1510 screws have been inserted by 145 surgeons where tightness was measured – average tightness was 78±10% for cortical (n = 1079) and 80±6% for cancellous screw insertions (n = 431). An average of 26% of all inserted screws irreparably damaged and stripped screw holes, reducing the construct pullout strength. Furthermore, awareness of bone stripping is very poor, meaning that screws must be considerably overtightened before a surgeon will typically detect it. Variation between individual surgeons’ ability to optimally insert screws was seen, with some surgeons stripping more than 90% of samples and others hardly any. Contradictory findings were seen for the relationship between the tightness achieved and bone density. The optimum tightness for screws remains unknown, thus subjectively chosen screw tightness, which varies greatly, remains without an established target to generate the best possible construct for any given situation. Work is needed to establish these targets, and to develop methods to accurately and repeatably achieve them. Cite this article: EFORT Open Rev 2020;5:26-36. DOI: 10.1302/2058-5241.5.180066
Intenção Empreendedora, Comportamento Empreendedor Inicial e Teoria So-ciocognitiva do Desenvolvimento de Carreira
Authors: Vasconcelos Vanessa Nunes de Souza Alencar , Silveira Amélia , Pedron Cristiane Drebes , Andrade Diego César Terra de 
Published: January 2020

Objetivo: O objetivo deste estudo foi analisar, a partir da Teoria Sociocognitiva do Desenvolvimento de Carreira, como os fatores que explicam a intenção empreendedora de estudantes universitários de uma IES brasileira podem influenciar o desenvolvimento do comportamento empreendedor inicial, considerando a variável recessão econômica. Método: Esta pesquisa é caracterizada como descritiva e foram adotados procedimentos estatísticos de Análise Fatorial Confirmatória e de Modelagem de Equações Estruturais para validação do modelo conceitual proposto. Foram analisados 498 questionários, respondidos por estudantes universitários de uma instituição de Ensino Superior de uma capital do Nordeste brasileiro. Resultados: Dentre os principais resultados verifica-se a inferência de que estudantes universitários desenvolvem o comportamento empreendedor individual à medida em que a intenção empreendedora aumenta. Ademais, destaca-se que a variável contexto econômico recessão tem impacto direto e positivo no interesse empreendedor, na intenção empreendedora e no comportamento empreendedor inicial dos estudantes universitários. Contribuições teóricas/metodológicas: Dentre as contribuições teóricas salienta-se a comprovação de que a Teoria Sociocognitiva do Desenvolvimento de Carreira é apropriada e aderente aos estudos de intenção empreendedora. Já a confirmação do modelo teórico adotado torna ainda mais relevante os achados do trabalho, uma vez que esse gap foi identificado em estudos anteriores.
Educação Empreendedora: o que dizem os artigos mais relevantes? Proposição de uma revisão de literatura e panorama de pesquisa.
Authors: Ribeiro Artur Tavares Vilas Boas , Plonski Guilherme Ary 
Published: January 2020

Objetivo do estudo: o presente artigo tem como objetivo analisar o panorama da literatura acadêmica em ensino de empreendedorismo, identificando tópicos de concentração e tendências para estudos futuros. Metodologia: este trabalho adotou como método a Revisão Sistemática de Literatura, implementando um algoritmo de ranqueamento para organização de relevância de uma amostra de 934 trabalhos sobre ensino de empreendedorismo. Principais resultados: com o algoritmo, foram identificados 54 artigos correspondentes a 50% do volume total de citações médias acumuladas em toda a amostra, o que permitiu uma análise de conteúdo e organização de tópicos e tendências. Foram identificados 9 grupos principais, com grande concentração de trabalhos no tópico “intenção empreendedora”. Três horizontes de pesquisa ainda a serem explorados emergiram da análise: a) ensino de empreendedorismo e novas abordagens em sala de aula; b) a ótica de ecossistemas de empreendedorismo no ensino e estudantes como atores no processo de formação; c) temas emergentes, como cultura, gênero e negócios sociais. Contribuições teóricas/metodológicas: o trabalho contribui em apresentar um método diferenciado para definição de relevância de artigos em estudos bibliométricos, método este não encontrado nas revisões anteriores sobre ensino de empreendedorismo. Além disso, dos resultados emergiram provocações para estudos robustos, tais como estudos qualitativos que permitam a identificação de variáveis moderadoras relevantes para o tema. Relevância/originalidade: além do diferencial metodológico, esta pesquisa mostra-se original pela organização dos diversos trabalhos em ensino de empreendedorismo, podendo ser um material de consulta sobre referências fundamentais para diferentes pesquisadores no tema em começo de jornada.
WHAT IS AN ANIMAL: LEARNING FROM THE PAST – LOOKING TO THE FUTURE
Authors: WERZANSKY-ORLAND YOTAM 
Published: January 2020

Can western human society apply its definition of the term “animal” on itself? Is it possible that a “person” is not only human? In this article, I explore and analyze various and interdisciplinary doctrines and approaches towards nonhuman animals in order to question the current status-quo regarding nonhuman animals.
Throughout history, as Man developed self-awareness and the ability to empathize with others, hunters were associated with wolves and began to domesticate them and other animals. With the introduction of different religions and beliefs into human society, Man was given the lead in the food chain, and the status of the nonhuman animals became objectified and subject of the property of human animals. Common modern taxonomy identified and described approximately 1.9 million different species. Some estimate the total number of species on earth in 8.7 million. The Human is just one of 5,416 other species in the Mammal class and shares a place of honour among hundreds of other Primates and Great Apes.
It appears to be commonly and scientifically accepted that humans are animals. Humans, as other nonhuman animals, all meet the definitions of the term. However, it seems that there is a wide gap between the human-generated definitions (HGDs) and the human social practice that created a distinct line between humans and “animals”. This alienation is best illustrated by the commonly mistaken equivalence between the terms “human” and “person”, as at least some nonhuman animals answer to many other HGDs. In this article I try to show that a rational and logical interpretation of these definitions’ nonhuman animals (at least some), should be regarded as persons and to suggest an approach to implement in the future.
On the degeneration of the Frölicher spectral sequence and small deformations
Authors: Maschio Michele 
Published: January 2020

AbstractWe study the behavior of the degeneration at the second step of the Frölicher spectral sequence of a 𝒞∞ family of compact complex manifolds. Using techniques from deformation theory and adapting them to pseudo-differential operators we prove a result à la Kodaira-Spencer for the dimension of the second step of the Frölicher spectral sequence and we prove that, under a certain hypothesis, the degeneration at the second step is an open property under small deformations of the complex structure.
The modified integral method for the determination of gravity disturbance near the Earth’s surface
Authors: Zhao D. , Li S. , Wang Q. , Gong Z. 
Published: January 2020

Abstract
For the calculation of gravity disturbance in the Earth’s external gravity field, the Stokes-Pizzetti integral is a commonly used method. However, when the target point approaches the Earth’s surface, such problems as singularity and discontinuity arise due to the Stokes kernel structure itself. To settle the problems, firstly the reason for singularity and discontinuity was discussed, and then modification was made to the integral formula, by which the singularity at the surface point is eliminated. Finally the non-singular integral formulas for the calculation of disturbing gravity were derived. In numerical experiments, an area in China was selected to test the modified formula. Numerical results show that the modified formula performs much better than classical Stokes-Pizzetti integral formula when dealing with the calculation of the radial component of gravity disturbance near the Earth’s surface.
THE CONCEPTUAL BASIS OF STUDENTS’ SUBJECTIVITIES TO THE PROFESSIONAL AND PEDAGOGICAL FUTURE PERFORMANCE
Authors: Shekhavtsova Svitlana 
Published: January 2020

We discussed the notion of “students’ subjectivities” from the current psychological and pedagogical point of view. The author investigates the notion in its historical development. The paper reviews the developing students’ subjectivities, focusing on students’ abilities and personal characteristics, such as students’ setting goals, achievement values, recognizing actual or potential perspectives. The article aims to study the problem of developing students’ subjectivities and to carry out theoretical analysis of students’ subjectivities showing the historical development of this category and reflecting the stages of students’ professional and pedagogical development. The target group of students are students related to pedagogical teaching practice. Relations between students’ subjectivities and the efficiency of their future professional and pedagogical performance are discussed, as well as how to develop students’ subjectivities creating special pedagogical conditions during the academic process in the university. We also focus on stages of students’ professional and pedagogical development, such as the stage of students’ professional training, professional adaptation stage and directly professionalization. In this regard, we present the core conceptual bases of students’ subjectivities development to professional and pedagogical performance. The conceptual bases highlight the idea of ​​students’ gradual change from one stage of students’ professional and pedagogical development to the following ones; the idea of the organization of reflective teaching activities of students’ interaction in the development of students’ subjectivities; and the idea of ​​interpreting the mechanisms of the students’ subjectivities development.
The image of the poet Mihai Eminescu in the literary dictionaries
Authors: Tcacenco Petra Denisa 
Published: January 2020

Mihai Eminescu is known as the Romanian national poet, the most important writer of the XIXͭʰ century in Romanian literature, whose writings have been intensely interpreted since his poetic debut. Therefore, this paper proposes a study of the way the literary dictionaries build the image of “the national poet”. This identity construct is significant to our investigation because it influences the interpretation of the poet figure through history. In order to have a wider view of the problem, we consulted a series of literary dictionaries and, also, dictionaries for students use to see how the figure of Eminescu is taught in schools. Moreover, we did not put aside foreign dictionaries, which bring a more objective perspective to the issue. The majority of Romanian dictionaries alter the poet’s portrait in favor of a “national construct”, created partly by the use of rhetoric figures. Another way of composing him a deformed image is accomplished by writing subjective and opaque interpretation of his poems. Consequently, such hermeneutics focuses on developing a myth that reflects mainly the way Romanians as nation want to be recognized and remembered.
Romania: university and politics in the 1980s. Case study: the University of Bucharest, the 1980s
Authors: Rotaru Mirela 
Published: January 2020

The presentation I am submitting to your attention focuses on how the University of Bucharest operated during the 1980’s, a very difficult period for Romania. As to be expected, the University of Bucharest, like the entire Romanian education system, took the full blow of communist experimental policies, reflecting quite accurately the general developments of the political system in Romania in the 1980s. The structure of Bucharest University, the curriculum, acceptance of the students via admission exams as well as the process of assignment of graduates from University of Bucharest to production units in the 1980’s, are aspects of university life which were all affected by profound changes during the period subject to the research, leading to a genuine phenomenon in the Romanian society. The way these changes were reflected in the cultural mindset and the traumas generated by them are all points of interest addressed in my presentation.
ADMINISTRATIVE SUPERVISION OF LOCAL SELF-GOVERNMENT IN THE BALTIC STATES: A COMPARATIVE VIEW
Authors: KIURIENÉ VIOLETA 
Published: January 2020

The article analyses models of administrative supervision of local self-government in the Baltic States (Latvia, Lithuania, Estonia) highlighting the advantages and disadvantages of these models. The research done in this article defines the theoretical concept of administrative supervision of local self-government; gives an overview of the legislative framework underpining the key administrative supervision bodies of local self-government in the Baltic States; discusses the issue of legal regulation and the present state of administrative supervision over local self-government units in the Baltic States; gives some theoretical and practical suggestions to develop this field in the Baltic States.
The research methods employed in preparation of this article are theoretical methods of analysis of scientific literature and sources, legal acts and documents as well as comparative and logical analysis, induction and generalisation. Three Baltic States similar in their area, number of inhabitants, and governmental peculiarities have been chosen for the analysis.
Evolución científica de la enseñanza de lenguas en el contexto universitario (1900-2019)
Authors: Rodríguez-García Antonio-Manuel , Fernández Mora María Aránzazu , Moreno Guerrero Antonio José 
Published: January 2020

RESUMEN: Este artículo tiene por objetivo analizar la evolución de la investigación sobre enseñanza de lenguas en el ámbito universitario dentro de la colección principal de la Web of Science (1900-2019). Para ello, se ha desarrollado un estudio bibliométrico por revisión sistemática, tomando en consideración los siguientes indicadores: producción diacrónica, geográfica, autores y de fuente. A su vez, se ha realizado un análisis del desarrollo estructural de los temas sobre una muestra de 2978 referencias procedentes de seis búsquedas combinadas. Los análisis realizados determinan un patrón de crecimiento exponencial de la literatura científica sobre la enseñanza de idiomas en el ámbito universitario durante la última década (2010-2019); período que contempla el 87,2% de la producción científica actual. En relación a la evolución de los temas del campo, se observa que las líneas de investigación actual se están centrando mayormente en la introducción de la tecnología para el apoyo de la enseñanza de idiomas en el contexto universitario.
PALABRAS CLAVE: enseñanza de idiomas; universidad; educación superior; revisión sistemática.

ABSTRACT: The aim of this article is to analyse the evolution of research on language teaching at the university level within the main collection of the Web of Science (1900-2019). To this end, a bibliometric study has been developed through systematic review, taking into consideration the following indicators: diachronic, geographical, authors and source productions. At the same time, an analysis of the structural development of the topics has been carried out on a sample of 2978 references from six combined searches. The analyses carried out determine an exponential growth pattern in the scientific literature on language teaching in universities over the last decade (2010-2019), a period that covers 87.2% of the current scientific production. In relation to the evolution of topics in the field, it is observed that current lines of research are focusing mainly on the introduction of technology to support language teaching in the university context.
KEYWORDS: language teaching; university; higher education; systematic review.
Caminhos do rio Xingu: povos, paisagens e belezas naturais no médio Xingu
Authors: Ferreira Dilma Costa 
Published: January 2020

O Rio Xingu, nasce no estado do Mato Grosso, na região da Parque Indígena do Xingu, a partir da confluência de outros rios. Esse rio é fonte de vida para diversos povos, sobretudo indígenas e ribeirinhos, e suas margens são habitadas por vários povos. No Alto Xingu, além das diversas etnias que vivem no Parque Indígena, o Rio atravessa a Terra Indígena Capoto/Jarina, onde habitam os Kayapó Setentrional, também considerados Mebengôkre, isto é, “gente do buraco da água”. Já no Médio Xingu, região de realização deste ensaio fotográfico, em particular no município de São Felix do Xingu-PA, suas águas atravessam grande parte da Terra Indígena Kayapó, onde também residem a maior parte dos Mebengôkre/ Kayapó Setentrionais. É nesse município que o Rio Xingu recebe um grande contributo do Rio Fresco, proporcionando uma paisagem graciosa, na qual se aprecia um pôr do sol exuberante diante do abraço dos rios. O Baixo Xingu também é palco de uma natureza riquíssima, abriga ribeirinhos e povos indígenas, como os Araweté e outras etnias. Recebe vários outros afluentes, com destaque para o Rio Iriri, antes de chegar ao final de seu curso fluvial. Entretanto, este ensaio visa evidenciar paisagens, experiências e vivências dos povos tradicionais que habitam o Médio Xingu, demonstrando a riqueza do Rio que alimenta, encanta, serve como fonte de renda através de sua flora e fauna aquática, e no caso dos indígenas também funciona como fonte de conhecimentos tradicionais e como palco de práticas xamânicas.
Self-promotion of TV Stations from a Rhetorical Perspective. Persuasion Techniques
Authors: Sobczak Barbara 
Published: January 2020

This paper discusses the persuasive techniques employed by media broadcasters in the self-promotional activities of television stations. A persuasive technique is understood as a specific manner of conduct of a broadcaster in the process of communication in which in order to increase their impact, a broadcaster emphasises or modifies some elements of the process. The starting point is the assumption that the selection of the persuasive techniques is related to such rhetoric determiners as the context of the operations of the media (consequences of technological changes: unification of media products, overwhelming increase in the amount of information, and ever growing global competition), the intended recipient, and the aim a broadcaster intends to achieve. The research material enabled the identification of the persuasive techniques in the self-promotional activities of media broadcasters emoployed at three levels: (1) mode of conveying information (e.g. repeating, and inherited audience); (2) content (e.g. positive selection technique, fragmentation, utilisation of the inaccessibility principle, emphasising the benefits of interacting with a medium, increasing the attractiveness of a communication by referring to broadly understood authority figures); and (3) form of communication (the technique of uniqueness).
Instructional leadership and its relationship with some variables
Authors: Coban Omur 
Published: January 2020

The purpose of this study is to investigate the instructional leadership and its relationship with some variables such as gender, educational status, career and working year in the same school in Turkey. The study conducted with 614 teachers at 45 schools all over Turkey in the 2017â€“2018 academic year. Data were collected via instructional leadership scale which was applied to teachers and it had two dimensions: trust and focus on instruction. The findings showed that teachersâ€™ perception of trust about school administrators had a significant relationship according to their gender. In other words, male teachers thought school administrators more trustful than female teachers. Another result indicated that perceptions of teachers on instructional leadership had no significant relationship according to teachersâ€™ educational status and their career years. However, teachersâ€™ perceptions of school administratorsâ€™ focusing on teaching had a statistically significant relationship to teachersâ€™ working years in the same school.
Keywords: Instructional leadership, age, gender, career year, working years in the same school.