Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Jan Ptáček"'
Publikováno v:
Plant Systematics and Evolution. 308
About 80% of angiosperms form a monosporic Polygonum-type embryo sac whereas in the remaining species eleven other types of embryo sac are found. Evidence as to the type of embryo sac is lacking for many plant species, and the role of higher-ploidy e
Publikováno v:
Annals of the Missouri Botanical Garden. 106:31-46
The subcosmopolitan genus Gentianella Moench (Gentianaceae, Swertiinae), with more than 170 currently accepted species in South America alone, is one of the emblematic examples of major and rapid radiations in the Andes. However, the taxonomy of Sout
Publikováno v:
Planta. 256(1)
Genome size of alpine plants is not related to their resistance against frost and heat. Genome size is a variable trait in angiosperms, and it was suggested that large genome size represents a constraint in stressful environments. We measured genome
Autor:
Jiří Košnar, Martin Čertner, Petr Koutecký, Jan Ptáček, Tomáš Urfus, Libor Ekrt, Carl J. Rothfels, Vlasta Jarolímová, Kristýna Hanušová
Publikováno v:
Annals of botany, vol 123, iss 5
Hanušová, Kristýna; Čertner, Martin; Urfus, Tomáš; Koutecký, Petr; Košnar, Jiří; Rothfels, Carl J; et al.(2019). Widespread co-occurrence of multiple ploidy levels in fragile ferns (Cystopteris fragilis complex; Cystopteridaceae) probably stems from similar ecology of cytotypes, their efficient dispersal and inter-ploidy hybridization.. Annals of botany, 123(5), 845-855. doi: 10.1093/aob/mcy219. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/8516c3z8
Ann Bot
Hanušová, Kristýna; Čertner, Martin; Urfus, Tomáš; Koutecký, Petr; Košnar, Jiří; Rothfels, Carl J; et al.(2019). Widespread co-occurrence of multiple ploidy levels in fragile ferns (Cystopteris fragilis complex; Cystopteridaceae) probably stems from similar ecology of cytotypes, their efficient dispersal and inter-ploidy hybridization.. Annals of botany, 123(5), 845-855. doi: 10.1093/aob/mcy219. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/8516c3z8
Ann Bot
Background and Aims Polyploidy has played an important role in the evolution of ferns. However, the dearth of data on cytotype diversity, cytotype distribution patterns and ecology in ferns is striking in comparison with angiosperms and prevents an a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e7fe9bf73ceaa7abb838fdc762d39f0
https://escholarship.org/uc/item/8516c3z8
https://escholarship.org/uc/item/8516c3z8
Autor:
Jan Ptáček
Publikováno v:
Geografie. 101:110-127
The article deals with the transition and transformation of Czech agriculture. The character of post-1990 systemic changes is defined. Chief goals of the state agricultural policy are described as well as the impacts of radical economic reform on the
Autor:
Miroslav Spousta, Pavel Ircing, Zdeněk Loose, José Relaño Gil, Jan Romportl, Silvie Cinková, Jan Ptáček, Raúl Santos
Publikováno v:
Text, Speech and Dialogue ISBN: 9783642157592
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This paper presents a real-time implementation of an automatic dialogue system called 'Senior Companion', which is not strictly task-oriented, but instead it is designed to 'chat' with elderly users about their family photographs. To a large extent,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b40dc84f0ff69c1e5acbd951d9738025
https://doi.org/10.1007/978-3-642-15760-8_70
https://doi.org/10.1007/978-3-642-15760-8_70
Autor:
Marie Mikulová, Silvie Cinková, Josef Toman, Jan Hajič, Zdeňka Urešová, Petr Pajas, Jan Ptáček
Publikováno v:
SLT
We present a description of a new resource (Prague Dependency Treebank of Spoken Language) being created for English and Czech to be used for the task of speech understanding, broad natural language analysis for dialog systems and other speech-relate
Publikováno v:
WMT@ACL
We present a new English→Czech machine translation system combining linguistically motivated layers of language description (as defined in the Prague Dependency Treebank annotation scenario) with statistical NLP approaches.
Proceedings of the Sixth International Workshop on Treebanks and Linguistic Theories. Editors: Koenraad De Smedt, Jan Hajič and Sandra Kübler. NEALT Proceedings Series, Vol. 1 (2007), 7-18. © 2007 The editors and contributors. Published by Norther
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::830bebdc79bee29a72b68638c96b0b96
http://hdl.handle.net/10062/4756
http://hdl.handle.net/10062/4756
Publikováno v:
Collection of Czechoslovak Chemical Communications. 43:3148-3162