Temat: code current - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Automated measurement of rail circuits parameters and harmonics of return tractive current to improve safety of movement
Autorzy:: Serdyuk, T.
Gavrilyuk, V.
Powiązania:: https://bibliotekanauki.pl/articles/393964.pdf
Data publikacji:: 2009
Wydawca:: Polskie Stowarzyszenie Telematyki Transportu
Tematy:: obwód torowy
prąd kodowany
harmoniczne
prąd trakcyjny
pomiar automatyczny
rail circuits
code current
harmonics
traction current
automated measurement
Opis:: A method of automated measurement of rail circuits parameters and harmonics of return traction current has been elaborated. The mathematical model of traction network is proposed and allowed us to involve the action of different sources of electromagnetic interference on the operation of rail circuits. The results of modelling allowed establishing that the rail circuits are exposed to a dangerous influence of return traction current near a locomotive and substation.
Źródło:: Archives of Transport System Telematics; 2009, 2, 3; 17-21
1899-8208
Pojawia się w:: Archives of Transport System Telematics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Stability, ranks, and the PhyloCode
Autorzy:: Lee, M S Y
Skinner, A.
Powiązania:: https://bibliotekanauki.pl/articles/21963.pdf
Data publikacji:: 2007
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Linnaean nomenclature
stability
phylogenetic nomenclature
phylogenetic definition
current code
rank
name
Linnaean system
type
biological nomenclature
Opis:: Current codes of biological nomenclature define taxon names using types and ranks: the type determines the minimal membership of a named taxon, and the rank is supposed to determine its limits. Homo is “the taxon including the type species Homo sapiens that is assigned to the rank of genus”. However, there is no “genus concept” (analogous to a species concept), and thus no way of empirically determining the limits of a particular genus, even in the context of a single agreed phylogeny. The same problems also apply to higher taxa at all other ranks under current codes, leading to great taxonomic instability. All proposed objective criteria for determining membership of taxa at a particular rank (e.g., geological age, genetic divergence) are shown to be problematic. In contrast, the clades named by phylogenetic definitions are objective and stable. Node−based and branchbased definitions are most precise; however, apomorphybased definitions can be ambiguous due to difficulty in defining alternative character states, and optimisation uncertainty. A major benefit of ranks (information about relative nesting of taxa) can be achieved even more efficiently using standardised but rankless suffixes already widely used in phylogenetic taxonomy. Finally, in situations where the phylogeny is poorly known, phylogenetic nomenclature appears to be superior to the Linnean system. Phylogenetic nomenclature does not force one to officially name poorly corroborated groupings, whereas Linnean codes compel users to erect and name genera even when relevant supraspecific relationships are poorly known.
Źródło:: Acta Palaeontologica Polonica; 2007, 52, 3
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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