Results 101 to 110 of about 572,107 (346)

Big Bird: A global dataset of birds in drone imagery annotated to species level

Remote Sensing in Ecology and Conservation, EarlyView.
Drones are a valuable tool for surveying birds, but manually detecting and identifying birds in drone images is costly. We assembled a diverse dataset of 23 865 images of birds captured with 21 different drones across 11 countries. We labelled 4824 of these images, detailing the location, species, posture category, age category, and sex of 49 990 birds
Joshua P. Wilson, Tatsuya Amano, Thomas Bregnballe, Alejandro Corregidor‐Castro, Roxane Francis, Diego Gallego‐García, Jarrod C. Hodgson, Landon R. Jones, César R. Luque‐Fernández, Dominik Marchowski, John McEvoy, Ann E. McKellar, W. Chris Oosthuizen, Christian Pfeifer, Martin Renner, José Hernán Sarasola, Mateo Sokač, Roberto Valle, Adam Zbyryt, Richard A. Fuller   +19 more
wiley   +1 more source

Rare B decays at LHCb [PDF]

, 2007
Rare loop-induced decays are sensitive to New Physics in many Standard Model extensions. In this paper we discuss the potential of the LHCb experiment to very rare $\mathrm{B_s} \to \mu^+ \mu^-$ decays, radiative penguin $\mathrm{b \to s}\gamma$ decays ...
Lenzi, Michela
core   +1 more source

Population Size and Decadal Trends of Three Penguin Species Nesting at Signy Island, South Orkney Islands

PLoS ONE, 2016
We report long-term changes in population size of three species of sympatrically breeding pygoscelid penguins: Adélie (Pygoscelis adeliae), chinstrap (Pygoscelis antarctica) and gentoo (Pygoscelis papua ellsworthii) over a 38 year period at Signy Island,
M. Dunn, J. Jackson, S. Adlard, A. Lynnes, D. R. Briggs, D. Fox, C. Waluda   +6 more
semanticscholar   +1 more source

Semi‐automated seal detection on the Western Antarctic Peninsula: an unsupervised machine learning approach for detecting ice seals in aerial survey data

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a semi‐automated, rule‐based image analysis pipeline to detect ice seals in aerial surveys of the Western Antarctic Peninsula during an unusually low sea ice year. By using simple hierarchical clustering instead of deep learning, the method substantially reduced human annotation effort while achieving 82% recall, identifying 758 ...
Claire McGinnity, Connor C.G. Bamford, Nathan Fenney, Andrew Fleming, Jaume Forcada, Michael S. Tift, Luis A. Hückstädt, Daniel P. Costa, Peter T. Fretwell   +8 more
wiley   +1 more source

Effective Hamiltonian of Electroweak Penguin for Hadronic b Quark Decays [PDF]

Journal of Sciences, Islamic Republic of Iran, 2009
In this research we work with the effective Hamiltonian and the quark model. We investigate the decay rates of matter-antimatter of quark. We describe the effective Hamiltonian theory and apply this theory to the calculation of current-current ( ), QCD
H. Mehrban
doaj  

News on penguins [PDF]

AIP Conference Proceedings, 2012
We summarize recent theoretical developments in the field of radiative and semileptonic penguin decays.
openaire   +2 more sources

Charmless decays B->pipi, piK and KK in broken SU(3)symmetry

, 2005
Charmless B decay modes $B \to \pi \pi, \pi K$ and $KK$ aresystematically investigated with and without flavor SU(3) symmetry. Independent analyses on $\pi \pi$ and $\pi K$ modes both favor a large ratio between color-suppressed tree ($C$) and tree ($T)$
A. J. Buras, Y.-F. Zhou, Y.-L. Wu, Yu-Feng Zhou, Yue-Liang Wu, Z. Ligeti   +5 more
core   +1 more source

Historical remote sensing highlights long‐term persistence of Emperor Penguin (Aptenodytes forsteri) colonies

Remote Sensing in Ecology and Conservation, EarlyView.
Remote sensing can reveal population dynamics of Antarctic penguin colonies. In this study, we analyze emperor penguin (Aptenodytes forsteri) guano stains in remote sensing imagery and discover colony presence predating known records for 18 colonies across Antarctica.
Martynas Bielinis, Michelle LaRue, Benjamin M. Kraemer, Catalina Munteanu   +3 more
wiley   +1 more source

Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean

Remote Sensing in Ecology and Conservation, EarlyView.
The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu, Grant van der Heever, Charles von der Meden, Hannah Truter, Stephen J. Lamberth, Ofer Gon   +5 more
wiley   +1 more source

Observation of B_s to phi gamma and Search for B_s to gamma gamma Decays at Belle

, 2008
We search for the radiative penguin decays B_s to phi gamma and B_s to gamma gamma in a 23.6 fb-1 data sample collected at the Upsilon(5S) resonance with the Belle detector at the KEKB e+e- asymmetric-energy collider.
Adachi, I., Aihara, H., Arinstein, K., Aulchenko, V., Aushev, T., Bakich, A. M., Balagura, V., Bay, A., Belous, K., Bhardwaj, V., Bitenc, U., Bondar, A., Bozek, A., Bračko, M., Browder, T. E., Chang, P., Chao, Y., Chen, A., Chen, K.-F., Chen, W. T., Cheon, B. G., Chistov, R., Cho, I.-S., Choi, Y., Dalseno, J., Dash, M., Drutskoy, A., Eidelman, S., Gabyshev, N., Goldenzweig, P., Golob, B., Haba, J., Hayasaka, K., Hazumi, M., Heffernan, D., Hoshi, Y., Hou, W.-S., Hsiung, Y. B., Hyun, H. J., Iijima, T., Inami, K., Ishikawa, A., Ishino, H., Itoh, R., Iwasaki, Y., Kah, D. H., Kaji, H., Kang, J. H., Kapusta, P., Kawai, H., Kawasaki, T., Kichimi, H., Kim, H. J., Kim, H. O., Kim, S. K., Kim, Y. J., Kinoshita, K., Korpar, S., Križan, P., Kumar, R., Kuo, C. C., Kwon, Y.-J., Lange, J. S., Lee, J., Lee, J. S., Lee, S. E., Lesiak, T., Limosani, A., Lin, S.-W., Liu, Y., Liventsev, D., Mandl, F., Mconie, S., Medvedeva, T., Mitaroff, W., Miyabayashi, K., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohapatra, D., Moloney, G. R., Nakao, M., Natkaniec, Z., Nishida, S., Nitoh, O., Nozaki, T., Ogawa, S., Ohshima, T., Okuno, S., Ozaki, H., Pakhlov, P., Pakhlova, G., Palka, H., Park, C. W., Park, H., Park, K. S., Pestotnik, R., Piilonen, L. E., Sakai, Y., Schneider, O., Schwartz, A. J., Schümann, J., Senyo, K., Sevior, M. E., Shapkin, M., Shibuya, H., Shiu, J.-G., Shwartz, B., Singh, J. B., Somov, A., Stanič, S., Starič, M., Sumisawa, K., Sumiyoshi, T., Takasaki, F., Tamai, K., Tanaka, M., Taylor, G. N., Teramoto, Y., Trabelsi, K., Tsuboyama, T., Uehara, S., Ueno, K., Unno, Y., Uno, S., Ushiroda, Y., Usov, Y., Varner, G., Vervink, K., Villa, S., Wang, C. H., Wang, P., Wang, X. L., Watanabe, Y., Wicht, J., Won, E., Yabsley, B. D., Yamashita, Y., Yamauchi, M., Yusa, Y., Zhang, Z. P., Zhilich, V., Zupanc, A., Zwahlen, N.   +144 more
core   +1 more source