Indexare Științifică Internațională (ISI)
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Anul: 2025(Downloads - 2)
Assertion 1 . Let S be strictly convex surface immersed in a Riemannian or Lorentzi an four manifold M2 .The following are equivalent , 1) the surface S has constant extrinsic curvature , 2) the identity map id : ( S , c) ( S , I) is harmonic
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The economy has become more than just a science that is studied in any education system, as the organic part of the social sciences; it is a state of affairs, a state of mind and a way of life of … Citeşte mai mult
This article examines some of the core elements of Sergei Karaganov’s doctrine in order to highlight how they sustain the expansionist ideology of the Putin regime. The analysis focuses on the abusive and strategically manipulated reinterpretations of key concepts from … Citeşte mai mult
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As a consequence of the economic and financial crisis started in mid-2007, which created conditions for the resurgence in the state economy on the positions of direct players, reveals not only the increased role of the state, but also the … Citeşte mai mult
Sfetcu, Nicolae (2025). ” Legea lui Ohm și „focul din grafit””, în Index Academic, I 2025, DOI: 10.58679/IA66111 PDF: https://www.telework.ro/ro/legea-lui-ohm-si-focul-din-grafit/ HTML: https://www.telework.ro/ro/legea-lui-ohm-si-focul-din-grafit/ Concepte: I-V, rezistivitate. Ce faci: trasează o „pistă” groasă de creion 8B pe hârtie; contacte cu … Citeşte mai mult
The implementation of sustainable development principles in contemporary economic thinking has generated the conceptual remodelling that expresses the new mechanisms of the economy.Thus, the concept of circular economy meet the theoretical representation of an economic system oriented towards the re-use … Citeşte mai mult
Approaching economic growth in quantitative and qualitative terms arising from endogenous or exogenous variables that can contribute to record an upward dynamic of Gross Domestic Product (GDP) often turns out to be an eclectic one. In this paper we focus … Citeşte mai mult
Sfetcu, Nicolae (2025). ”Determinarea constantei lui Planck folosind LED-uri”, în Index Academic, I 2025, DOI: 10.58679/IA91520 PDF: https://www.indexacademic.ro/pdf/determinarea-constantei-lui-planck-folosind-led-uri/ HTML: https://www.telework.ro/ro/determinarea-constantei-lui-planck-folosind-led-uri/ Concepte: prag de emisie, E = hf. Ce faci: măsori tensiunea prag pentru LED-uri de culori diferite (roșu-verde-albastru) … Citeşte mai mult
Sfetcu, Nicolae (2025). ” Pendulul fizic și factorul Q”, în Index Academic, I 2025, DOI: 10.58679/IA22186 PDF: https://www.indexacademic.ro/pdf/pendulul-fizic-si-factorul-q/ HTML: https://www.telework.ro/ro/pendulul-fizic-si-factorul-q/ Concepte: perioadă, amortizare, energie pierdută. Ce faci: atârnă un corp (șurub mare) pe sfoară; filmează sau folosește accelerometrul telefonului … Citeşte mai mult
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