Autor: Gupta, V.K. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Positronium Fraction and Positron Life Time at Ni(110) and Ge(110) Surfaces
Autorzy:: Shrivastava, S. B.
Gupta, V. K.
Powiązania:: https://bibliotekanauki.pl/articles/1887749.pdf
Data publikacji:: 1991-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 68.35.-p
25.30.Hm
Opis:: The fraction of positronium formation and the positron lifetime at Ni(110) and Ge(110) surfaces, when low-energy positrons incident on them, have been calculated using the rate equations approach and positron trapping in image potential well. The calculated results are compared with the available experimental results. The positronium fraction is overestimated at high temperatures in case of Ni(110).
Źródło:: Acta Physica Polonica A; 1991, 79, 6; 853-859
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Fixed point theorem in 2 non-archimedean Menger PM-Space using weakly L-compatible and weakly M-compatible mappings
Autorzy:: Gupta, V. K.
Jain, Arihant
Kushwah, Jaya
Powiązania:: https://bibliotekanauki.pl/articles/744861.pdf
Data publikacji:: 2011
Wydawca:: Polskie Towarzystwo Matematyczne
Tematy:: Non-Archimedean Menger probabilistic metric space
Common fixed points
compatible maps
weakly L-compatible and Weakly M-compatible maps
Opis:: In the present paper, we extend and generalize the result of Cho et. al. [1] by introducing the notion of weakly L-compatible and weakly M-compatible maps in a 2 non-Archimedean Menger PM-space.
Źródło:: Commentationes Mathematicae; 2011, 51, 2
0373-8299
Pojawia się w:: Commentationes Mathematicae
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Comparative study of GA & DE algorithm for the economic operation of a power system using FACTS devices
Autorzy:: Bhattacharyya, B.
Gupta, V. K.
Kumar, S.
Powiązania:: https://bibliotekanauki.pl/articles/141459.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: FACTS devices
line power flow
FACTS devices & its optimal locations
genetic algorithm
differential evolution technique
Opis:: The problem of improving the voltage profile and reducing power loss in electrical networks must be solved in an optimal manner. This paper deals with comparative study of Genetic Algorithm (GA) and Differential Evolution (DE) based algorithm for the optimal allocation of multiple FACTS (Flexible AC Transmission System) devices in an interconnected power system for the economic operation as well as to enhance loadability of lines. Proper placement of FACTS devices like Static VAr Compensator (SVC), Thyristor Controlled Switched Capacitor (TCSC) and controlling reactive generations of the generators and transformer tap settings simultaneously improves the system performance greatly using the proposed approach. These GA & DE based methods are applied on standard IEEE 30 bus system. The system is reactively loaded starting from base to 200% of base load. FACTS devices are installed in the different locations of the power system and system performance is observed with and without FACTS devices. First, the locations, where the FACTS devices to be placed is determined by calculating active and reactive power flows in the lines. GA and DE based algorithm is then applied to find the amount of magnitudes of the FACTS devices. Finally the comparison between these two techniques for the placement of FACTS devices are presented.
Źródło:: Archives of Electrical Engineering; 2013, 62, 4; 541-552
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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