Acoustic identification and density estimate of Diaphus theta (myctophidae) off Hokkaido, Japan

2006 ◽  
Vol 120 (5) ◽  
pp. 3019-3019
Author(s):  
Hiroki Yasuma ◽  
Kazushi Miyashita ◽  
Orio Yamamura
Keyword(s):  
Density Estimate ◽  
Diaphus Theta ◽  
Acoustic Identification

Bat echolocation in continental China: a systematic review and first acoustic identification key for the country

2021 ◽  
Author(s):  
David López-Bosch ◽  
Joe Chun-Chia Huang ◽  
Yanping Wang ◽  
Ana Filipa Palmeirim ◽  
Luke Gibson ◽  
...  
Keyword(s):  
Systematic Review ◽  
Identification Key ◽  
Acoustic Identification

Diet and sexual maturation of the neon flying squid Ommastrephes bartramii during autumn and spring in the Kuroshio–Oyashio transition region

2008 ◽  
Vol 88 (2) ◽  
pp. 381-389 ◽  
Author(s):  
Hikaru Watanabe ◽  
Tsunemi Kubodera ◽  
Taro Ichii ◽  
Mitsuo Sakai ◽  
Masatoshi Moku ◽  
...  
Keyword(s):  
Transition Region ◽  
Sexual Maturation ◽  
Prey Species ◽  
Feeding Strategy ◽  
Ommastrephes Bartramii ◽  
Neon Flying Squid ◽  
The Difference ◽  
Diaphus Theta ◽  
The Kuroshio ◽  
Prey Items

Diet and sexual maturation were examined in the winter–spring cohort of the neon flying squid, Ommastrephes bartramii, during its southward migration through the Kuroshio–Oyashio transition region of the western North Pacific. The main prey items are micronektonic animals and small pelagic fish, which were abundantly distributed throughout the study area. Among the prey species, O. bartramii was dependent on the Japanese anchovy Engraulis japonicus, which also migrate from the northern to southern transition region during the winter, and the micronektonic squid Watasenia scintillans throughout the study period. Other common prey items were Gonatopsis borealis, Diaphus theta, and Ceratoscopelus warmingii from October to November or December, and Tarletonbeania taylori after December. These dietary changes can be explained by the difference in the seasonal north–south migration patterns of the predator and prey species. Male sexual maturation progressed throughout the season, and most individuals were fully mature in January. In contrast, most of the females were immature throughout the study period. The feeding strategy of the squid in relation to their seasonal north to south migration and sexual maturation was discussed.

scholarly journals Acoustic Identification of Bats in the Southern Western Ghats, India

2014 ◽  
Vol 16 (1) ◽  
pp. 213-222 ◽  
Author(s):  
Claire F. R. Wordley ◽  
Eleni K. Foui ◽  
Divya Mudappa ◽  
Mahesh Sankaran ◽  
John D. Altringham
Keyword(s):  
Western Ghats ◽  
Southern Western Ghats ◽  
Acoustic Identification

Improved Method for Acoustic Identification of Free Conductive Particle Defects in GIL

2019 ◽  
Vol 34 (4) ◽  
pp. 1317-1323 ◽  
Author(s):  
Zhicheng Wu ◽  
Qiaogen Zhang ◽  
Jiajie Song ◽  
Xiaoang Li
Keyword(s):  
Improved Method ◽  
Conductive Particle ◽  
Acoustic Identification

scholarly journals Robust Multisensor Image Matching Using Bayesian Estimated Mutual Information

2013 ◽  
Vol 2013 ◽  
pp. 1-11
Author(s):  
Lurong Shen ◽  
Xinsheng Huang ◽  
Yuzhuang Yan ◽  
Yongbin Zheng ◽  
Wanying Xu
Keyword(s):  
Mutual Information ◽  
Cost Saving ◽  
Image Matching ◽  
Prior Information ◽  
Kernel Density ◽  
Density Estimate ◽  
Kernel Density Estimate ◽  
Template Image ◽  
Matching Performance

Mutual information (MI) has been widely used in multisensor image matching, but it may lead to mismatch among images with messy background. However, additional prior information can be of great help in improving the matching performance. In this paper, a robust Bayesian estimated mutual information, named as BMI, for multisensor image matching is proposed. This method has been implemented by utilizing the gradient prior information, in which the prior is estimated by the kernel density estimate (KDE) method, and the likelihood is modeled according to the distance of orientations. To further improve the robustness, we restrict the matching within the regions where the corresponding pixels of template image are salient enough. Experiments on several groups of multisensor images show that the proposed method outperforms the standard MI in robustness and accuracy and is similar with Pluim’s method. However, our computation is far more cost saving.

scholarly journals Acoustic biomass estimate of California headlightfish Diaphus theta, off eastern Hokkaido, Japan

2010 ◽  
Vol 76 (3) ◽  
pp. 362-369 ◽  
Author(s):  
HIROKI YASUMA ◽  
TATSUKI OHSHIMA ◽  
SATOSHI HONDA ◽  
KAZUSHI MIYASHITA ◽  
ICHIRO AOKI
Keyword(s):  
Biomass Estimate ◽  
Diaphus Theta
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