894 resultados para Formation of Teachers
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The statements made in recent weeks by Russian officials, and especially President Vladimir Putin, in connection with Moscow’s policy towards Ukraine, may suggest that the emergence of a certain doctrine of Russian foreign and security policy is at hand, especially in relation to the post-Soviet area. Most of the arguments at the core of this doctrine are not new, but recently they have been formulated more openly and in more radical terms. Those arguments concern the role of Russia as the defender of Russian-speaking communities abroad and the guarantor of their rights, as well as specifically understood good neighbourly relations (meaning in fact limited sovereignty) as a precondition that must be met in order for Moscow to recognise the independence and territorial integrity of post-Soviet states. However, the new doctrine also includes arguments which have not been raised before, or have hitherto only been formulated on rare occasions, and which may indicate the future evolution of Russia’s policy. Specifically, this refers to Russia’s use of extralegal categories, such as national interest, truth and justice, to justify its policy, and its recognition of military force as a legitimate instrument to defend its compatriots abroad. This doctrine is effectively an outline of the conceptual foundation for Russian dominance in the post-Soviet area. It offers a justification for the efforts to restore the unity of the ‘Russian nation’ (or more broadly, the Russian-speaking community), within a bloc pursuing close integration (the Eurasian Economic Union), or even within a single state encompassing at least parts of that area. As such, it poses a challenge for the West, which Moscow sees as the main opponent of Russia’s plans to build a new order in Europe (Eurasia) that would undermine the post-Cold War order.
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Primary sex determination in placental mammals is a very well studied developmental process. Here, we aim to investigate the currently established scenario and to assess its adequacy to fully recover the observed phenotypes, in the wild type and perturbed situations. Computational modelling allows clarifying network dynamics, elucidating crucial temporal constrains as well as interplay between core regulatory modules.
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Secondary carbonate minerals were recovered within the basalts at both ODP Sites 768 and 770 in the Sulu and Celebes seas. Petrographic and X-ray diffraction analyses indicate that the carbonates are calcites. Other alteration products recognized in the thin sections are smectites, iron oxides, and gypsum. The 13C values of carbonates from both sites range from 1.6 per mil to 2.3 per mil, which are indicative of inorganic carbonate formation with no contributions from 13C-depleted sources such as oxidized organic carbon or methane. The oxygen isotopes at Site 770 range from 30.8 per mil to 31.6 per mil, which indicates a pervasive circulation of cold seawater (9° to 12°C) during alteration of the Celebes Sea basalts. In contrast, carbonates associated with Site 768 basalts have less positive d18O values (21.0 per mil to 27.3 per mil). A lighter 18O isotopic signature indicates the formation of secondary calcite at either higher temperatures or in a system closed to seawater. The rapidly deposited pyroclastic flows at Site 768 would have limited water access to the crust very soon after its formation, which leads us to speculate that the carbonates in the Sulu Sea basalts were formed by isotopically modified fluids resulting from basalt alteration in a closed system.
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At head of title: Project in Research in Universitites.
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Mode of access: Internet.