scholarly journals Fenologia de samambaias e licófitas no Brasil: uma abordagem metodológica e ecológica

2019 ◽  
Vol 12 (4) ◽  
pp. 1197
Author(s):  
Andressa Müller ◽  
Jairo Lizandro Schmitt

Samambaias são plantas vasculares sem sementes que se distribuem em uma variedade de ecossistemas, dos trópicos à região boreal e ocupam desde o estrato herbáceo até o arborescente. Fenologia é uma ciência ambiental integrativa que estuda os eventos vegetativos e reprodutivos das plantas e a sua relação com o clima. Estudos fenológicos com samambaias têm sido realizados ao longo do território brasileiro há cerca de 36 anos, com plantas monitoradas principalmente nas regiões sul e nordeste do país. Diversos enfoques podem ser dados ao monitoramento fenológico, visando entender a influência do clima no desencadeamento das fenofases, o crescimento e o desenvolvimento das plantas. Desta forma, por meio de extensa revisão na literatura científica, este artigo objetiva abordar e construir um cenário fenológico brasileiro para as espécies de samambaias e licófitas monitoradas no país, além de compilar as abordagens metodológicas necessárias para alcançar as respostas fenológicas dessas plantas, assim como novas perspectivas de pesquisa e lacunas no campo do conhecimento a serem preenchidas.    Fern and lycophyte phenology in Brazil: a methodological and ecological approach A B S T R A C TFerns are seedless vascular plants that are found from tropics to boreal region and occupy from understory to arborescent strata. Phenology is an integrative environmental science that studies the vegetative and reproductive events of plants and their relation to the climate. Phenological studies with ferns have been carried out along Brazilian territory for about 36 years, with plants monitored mainly in the southern and northeastern regions of the country. Several approaches can be given to phenological monitoring, in order to understand the influence of climate on the triggers of phenophases, the growth and development of plants. Thus, through an extensive review in the scientific literature, this article aims to approach and to construe a Brazilian phenological scenario for the fern and lycophyte species monitored in the country. In addition, to compile the methodological approaches necessary to reach the phenological responses of these plants, as well as new research perspectives and to indicate gaps in the field of knowledge to be fulfilled.   Key-words: Climate, Phenophase, Monitoring. 

2015 ◽  
Vol 4 (1) ◽  
pp. 4-18
Author(s):  
Lauren Rebecca Sklaroff

This state of the field essay examines recent trends in American Cultural History, focusing on music, race and ethnicity, material culture, and the body. Expanding on key themes in articles featured in the special issue of Cultural History, the essay draws linkages to other important literatures. The essay argues for more a more serious consideration of the products within popular culture, less as a reflection of social or economic trends, rather for their own historical significance. While the essay examines some classic texts, more emphasis is on work published within the last decade. Here, interdisciplinary methods are stressed, as are new research perspectives developing by non-western historians.


Pathogens ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 30
Author(s):  
Donato Traversa ◽  
Simone Morelli ◽  
Angela Di Cesare ◽  
Anastasia Diakou

In the past decade cardiopulmonary nematodes affecting felids have become a core research topic in small animal parasitology. In the late 2000s, an increase in studies was followed by unexpected findings in the early 2010s, which have stimulated research teams to start investigating these intriguing parasites. Prolific scientific debate and exchanges have then fostered field and laboratory studies and epi-zootiological surveys. New data have improved basic and applied knowledge, solved dilemmas and posed new questions. This article discusses the past and present background to felid cardiopulmonary nematodes after the last few years of intense scientific research. New data which have demonstrated the key role of Aelurostrongylus abstrusus and Troglostrongylus brevior in causing respiratory infections in domestic cats, and on the nil to negligible current importance of other species, i.e., Troglostrongylus subcrenatus, Oslerus rostratus and Angiostrongylus chabaudi, are presented. Biological information and hypothesized alternative routes of infection are analysed and discussed. Novel identification and taxonomical data and issues are reported and commented upon. On the whole, recent biological, ecological and epi-zootiological information on felid meta-strongyloids is critically analysed, with the aim to answer outstanding questions, stimulate future studies, and underline new research perspectives.


Author(s):  
Waldemar Karwowski

This main objective of this study was to introduce and investigate the concept of load of perceptual indifference (LPI) for assessment of load heaviness in manual lifting tasks. The loads of perceptual indifference were defined as those box weights which would result in the same values of subjective compatibility scores for a given pair of perceptual categories of load heaviness. At the point of indifference, the loads are perceived as to be acceptable, safe or not-too-heavy with an equal strength as the loads judged to be too-heavy for continuous lifting. The linguistic magnitude estimation (LME) method (Karwowski, 1990) was used for experimental and modeling purposes. This allowed to develop a quantitative model for the human assessment of four categories of lifted loads of interest. The results indicate that the lack of cognitive benchmark introduces inconsistency in subjects perception of load acceptability and safety compared to the concept of to-heavy load. In order to overcome this problem, a new research approach to manual lifting tasks is needed, based on the integration of cognitive engineering, active psychophysics and ecological approach.


Author(s):  
Natalia G. Krivulya ◽  

Animated documentary is becoming one of the fastest growing phenomena of modern screen art in the post-truth era. The review and analysis of scientific works devoted to animated documentary is seen as relevant both for the further development of scientific thought and the search for new research strategies that expand the problem field, and for the practical sphere. The research was conducted on the basis of a review and analysis of scientific literature (monographs and articles in international journals included in electronic research system international databases Scopus, Web of Science, eLibrary.ru) in English, Spanish and Russian for the period 1997-2019. The novelty of the review article is not only an attempt to present a systematic view of animated documentary as a phenomenon of screen art, but also to identify and systematize the areas in which scientific discussions are conducted. It introduces the reader to theoretical views on the terminology, Genesis, specifics, nature, and classification systems of documentary animation. Animated documentary appeared when the cinema was just taking first steps but its development began in the 1980s. At this time, animation begins to take an interest in reality, inner peace, and socially taboo topics. Since the 1990s, the foundations of animated documentary are laid, narrative strategies are developed, and a new language are actively sought. Interest in animated documentary from the scientific community arose only in the 2000s. On the one hand, it has been manifested by the increasing role of documentation in the art, which has taken on an attraction character since the advent of digital technology; on the other hand, and as a consequence of the convergence of screen arts and the emergence of hybridization trends. The academic community has focused around developing definitions and understanding what can be attributed to the field of documentary animation. By 2010, the scientific literature focused on issues related to the specifics of animated documentary, ways of presenting reality, and indexing. By the mid-2010s, animation is becoming the subject of interdisciplinary study. At this time, there are develop tools for analyzing works of animated documentaries, and its genre system begins to build. One of the main features of animated documentaries is hybridity. Its dual nature is born of fluctuations between the certainty of facts and artistic embodiment. The problems of authenticity and representation of reality become one of the most controversial topics in an animated film. The work provides an overview of theoretical studies on the genesis, history and particularities of animadoc. The theoretical texts identify three approaches that form the main directions in the analysis of animated documentary. The first group of researchers analyzes this phenomenon and its nature based on the theories of documentaries and the transformation with the advent of digital technologies, of the concepts of reality, authenticity and fact (document). The second group of authors considers animation as a phenomenon of modern animation that arose as a result of technological renewal and changes in its role as a socio-cultural practice. A third group of scientists believes that animadoc is a post-postmodern phenomenon that arose as a means of presenting a world in which there is mobility of borders and cyberspace becomes a new reality. The review allows us to conclude that animated documentary is a manifestation of a new mode of postphotographic vision of a reflexive nature, in which the imagination that refracts images of reality becomes of primary importance. Despite the interest in it from the academic community and the emergence of theoretical works, the study of this phenomenon is only at the initial stage. Despite the interest in it from the academic community, there is a small number of deep theoretical works caused by the hybrid nature of the phenomenon itself, the imperfection of working models and methods for analyzing representational strategies, and the problems of forming a conceptual apparatus.


2018 ◽  
Vol 119 (1) ◽  
pp. 6-16 ◽  
Author(s):  
Christian Fertner ◽  
Andreas Aagaard Christensen ◽  
Peter Stubkjær Andersen ◽  
Anton Stahl Olafsson ◽  
Søren Præstholm ◽  
...  

2021 ◽  
Vol 13 (2) ◽  
pp. 28-35
Author(s):  
Giovanni Ganino

Abstract The article presents a systematic analysis of international literature concerning the design of educational audiovisual texts at university level. The theme appears very important in light of the extensive use of these cognitive artefacts in flipped, blended,Massive Online Open Courses (MOOCs) teaching processes. This is even more important in the era of health emergency that has led to the use of audiovisual text as the main teaching medium at school and university. The aim of the work is to provide a contribution to research on educational technologies for the purpose of identifying new instructional design principles that support multimedia learning. The analysis highlighted new research directions, such as the significant role of the camera point of view in learning complex manual procedures, new design elements on the ways of representing the teacher and his/her communicative attitude, and the increasingly close relationship between educational sciences and neuroscience. The result may be useful, on the one hand, as a stimulus for an in-depth study of the new lines of research identified, by researchers on educational technologies, and on the other, for a more informed evidence-based use of audiovisual texts in teaching practices.


2017 ◽  
Author(s):  
Liam Swiss

This article highlights an emerging research agenda for the study of foreign aid through a World Society theory lens. First, it briefly summarizes the social scientific literature on aid and sociologists' earlier contributions to this research. Next, it reviews the contours of world society research and the place of aid within this body of literature. Finally, it outlines three emergent threads of research on foreign aid that comprise a new research agenda for the sociology of foreign aid and its role in world society globalization.


2014 ◽  
Vol 27 (24) ◽  
pp. 9272-9289 ◽  
Author(s):  
Maria Hatzaki ◽  
Helena A. Flocas ◽  
Ian Simmonds ◽  
John Kouroutzoglou ◽  
Kevin Keay ◽  
...  

Abstract An objective climatology of anticyclones over the greater Mediterranean region is presented based on the Interim ECMWF Re-Analysis (ERA-Interim) for a 34-yr period (1979–2012) and the Melbourne University automatic identification and tracking algorithm. The scheme’s robustness and reliability for the transient extratropical propagation of anticyclones, with the appropriate choices of parameter settings, has been established and the results obtained here present new research perspectives on anticyclonic activity affecting the Mediterranean. Properties of Mediterranean anticyclones, such as frequency, generation and dissipation, movement, scale, and depth are investigated. The highest frequency of anticyclones is found over continental areas, while the highest maritime frequency occurs over closed basins exhibiting also maxima of anticyclogenesis. There is a significant seasonality in system density and anticyclogenesis maxima, this being associated with the seasonal variations of the larger-scale atmospheric circulation that affect the greater Mediterranean region.


2021 ◽  
Vol 20 (5) ◽  
pp. 68-74
Author(s):  
V. M. Svistushkin ◽  
◽  
E. V. Sin’kov ◽  
I. V. Stozhkova ◽  
◽  
...  

Otosclerosis is one of the most common causes of progressive hearing loss, in particular in people of working age. The effectiveness of stapedial surgery largely determines the interest in studying the problems and prospects for the development of technologies, namely, the improvement of prostheses, surgical techniques, and assistance during interventions. It is worth noting that the main attention in the scientific literature is paid to the description of the clinic, the diagnosis of otosclerosis, as well as the methods of stapedoplasty. However, the question of the etiology and pathogenesis of this disease remains relevant and open for discussion, despite the many domestic and foreign works in this field. The emergence of new research methods, including molecular-genetic ones, contributed to the transition of research to a new level and the development of several new theories. Modern understanding of the pathogenesis of otosclerosis considers this disease as a multifactorial condition, in which many processes are involved, for example, genetic, hormonal, biochemical, and immunological. Likely, further study of the theory and hypothesis of the development of otosclerosis will find their justification, which will help answer many questions. The purpose of this article is to analyze and systematize data concerning various theories of the etiopathogenesis of the otosclerosis process, based on the study of modern domestic and foreign literature.


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