scholarly journals Variation in the annual growth, by sex and migration history, of silver American eels Anguilla rostrata

2004 ◽  
Vol 272 ◽  
pp. 231-244 ◽  
Author(s):  
BM Jessop ◽  
JC Shiao ◽  
Y Iizuka ◽  
WN Tzeng
2021 ◽  
Vol 13 (14) ◽  
pp. 2671
Author(s):  
Xiaoqin Zang ◽  
Tianzhixi Yin ◽  
Zhangshuan Hou ◽  
Robert P. Mueller ◽  
Zhiqun Daniel Deng ◽  
...  

Adult American eels (Anguilla rostrata) are vulnerable to hydropower turbine mortality during outmigration from growth habitat in inland waters to the ocean where they spawn. Imaging sonar is a reliable and proven technology for monitoring of fish passage and migration; however, there is no efficient automated method for eel detection. We designed a deep learning model for automated detection of adult American eels from sonar data. The method employs convolution neural network (CNN) to distinguish between 14 images of eels and non-eel objects. Prior to image classification with CNN, background subtraction and wavelet denoising were applied to enhance sonar images. The CNN model was first trained and tested on data obtained from a laboratory experiment, which yielded overall accuracies of >98% for image-based classification. Then, the model was trained and tested on field data that were obtained near the Iroquois Dam located on the St. Lawrence River; the accuracy achieved was commensurate with that of human experts.


1995 ◽  
Vol 12 (4) ◽  
pp. 345-375 ◽  
Author(s):  
Isabelle Moretti ◽  
Kenneth Deacon

2004 ◽  
Vol 49 (7) ◽  
pp. 339-348 ◽  
Author(s):  
Wei Deng ◽  
Baochen Shi ◽  
Xiaoli He ◽  
Zhihua Zhang ◽  
Jun Xu ◽  
...  

2018 ◽  
Vol 4 (1-2) ◽  
pp. 19-44 ◽  
Author(s):  
Nadine Attewell

This article examines the visual genre of the school photograph in order to reflect on the promise of transcolonial methodologies for thinking about the history of race and belonging in Canada. It focuses on four photographs of schoolchildren taken at around the same time in a range of locations across the British Empire. All feature Chinese children in close proximity to black, South Asian, or white peers. Seeking to understand how the photographs resonate with one another as representations of encounters between Asian and other racialized child subjects—divisions of class, location, and migration history notwithstanding—I develop a transcolonial methodology that is attentive to the (counter)institutional workings of rhythm and repetition as engines of community formation. Such a practice, I suggest, allows for rhythms to emerge that resist alignment with the pedagogical dictates of national time, as exemplified by national celebrations of Canada 150.


2012 ◽  
Vol 57 (2) ◽  
pp. 229-255 ◽  
Author(s):  
Frank Wolff

SummaryThe “transnational turn” is one of the most discussed topics in historiography, yet it has inspired more theoretical tension than empirically saturated studies. This article combines both aspects by examining the transnational network formation of one of the most important social movements in late imperial Russia, the Jewish Labour Bund. It furthermore introduces into historiography one of the most fruitful theories in recent social sciences, “actor-network theory”. This opens the view on the steady recreation of a social movement and reveals how closely the history of the Bund in eastern Europe was interwoven with large socialist organizations in the New World. Based on a large number of sources, this contribution to migration and movement history captures the creation and the limits of global socialist networks. As a result, it shows that globalization did not only create economic or political networks but that it impacted the everyday lives of authors and journalists as well as those of tailors and shoemakers.


Author(s):  
Oksana V. Solopova ◽  

The article is devoted to the situation and prospects of humanitarian cooperation between the Republic of Belarus and the Russian Federation in the last few years. The author, Senior Lecturer of the Department of History of Post-Soviet Countries, Head of the Laboratory of the Diaspora and Migration History, Deputy Dean, Academic Secretary of the Faculty of History at Lomonosov Moscow State University, shows the evolution of forms and methods in the Russian and Belarusian cooperation in higher education and academic science using various programmes and joint projects of Lomonosov Moscow State University and its Belarusian partners, primarily the Belarusian State University, as an example. The article focuses on various programmes established through the collaboration of the Faculty of History of Lomonosov Moscow State University and its partners: the Faculty of History of the Belarusian State University, the Department of Humanities and Arts of the National Academy of Sciences of the Republic of Belarus; it also specially focuses on implementing “The History of Belarusian Diaspora”, the first international joint educational Master Programme of Lomonosov Moscow State University and the Belarusian State University opened in the academic year 2019–2020. The author emphasises that, thanks to the mutual experience gained over the years, Russian and Belarusian universities, as well as their national academies of sciences are the driving force behind humanitarian cooperation under the Union State.


2009 ◽  
Vol 56 (4) ◽  
pp. 373-379 ◽  
Author(s):  
Kenichi Ohara ◽  
Momoko Hotta ◽  
Daisuke Takahashi ◽  
Takashi Asahida ◽  
Hitoshi Ida ◽  
...  

Author(s):  
Lucyna Rajca

The aim of the paper is to present issues related to the approach to the integration of immigrants in Poland in the last three decades. The article is seeking an answer to the question of how the approach to immigrant integration has evolved? Does the evolving approach reflect the rising tide of change taking place in Europe? First, the article discusses the issues of migration to Poland. It is essential to consider cultural conditions related to the national identity and migration history of a given country in an attempt to explain the evolution of the integration policy. The subsequent parts analyze the Polish integration policy until 2015 and the integration policy after 2015. The results of the research show that in Poland, the approach to the integration of immigrants has evolved in a short time: from the “strategy of abandonment” to “integration” understood as a two-way process of adaptation to the concept of assimilation.


2004 ◽  
Vol 53 (1-6) ◽  
pp. 193-197 ◽  
Author(s):  
Parvin Salehi Shanjani ◽  
C. Vettori ◽  
R. Giannini ◽  
R. A. Khavari-Nejad

Abstract CpDNA variation in Iranian beech, Fagus orientalis Lipsky (Fagaceae) was studied in 14 populations distributed throughout the species range in the Hyrcanain zone. Two cpDNA intergenic regions were analyzed: (i) one in the DT region between trnD (tRNA-Asp) and trnT (tRNA-Thr) genes, and (ii) one in the OA region between the orf184 and petA genes. The restriction fragments of the region DT did not show polymorphism among individuals within any population analyzed. However, among individuals within analyzed populations of Asalem region and Neka-1400 population, polymorphism in the restriction fragments of the OA region were found. A total of 3 different chloroplast (cp) haplotypes were scored. The distribution of the cpDNA haplotypes revealed a geographical structure of the genetic differentiation with Gst = %68.7 and Nst = %70.3. The distribution pattern of F. orientalis cpDNA haplotypes may reflect environmental differences and migration history of beech during historical distribution in Tertiary from Asalem (most polymorphic region) to East of Hyrcanian forests.


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