Autor: Das, U. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: A new characterization of k-fold Lebesgue integral
Autorzy:: Das, U.
Das, A. G.
Wydawca:: Polskie Towarzystwo Matematyczne
Powiązania:: https://bibliotekanauki.pl/articles/745988.pdf Link otwiera się w nowym oknie
Opis:: The article contains no abstract
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 2.

Tytuł:: An optical gamma-ray burst catalogue with measured redshift : I. Data release of 535 gamma-ray bursts and colour evolution
Autorzy:: Rossi, A.
Oates, S. R.
Orange, N. B.
Moriya, T. J.
Rinaldi, E.
Fraija, N.
Lopresti, C.
Jamal, W.
González, J. d. J. G.
Gendre, B.
Prochaska, X.
Levine, D.
Kumar, R.
Rosi, P.
Castro-Tirado, A. J.
Becerra, R. L.
Conti, M.
Pozanenko, A.
Das, U.
Richer, M.
Strabla, L.
Butler, N. R.
Saha, N.
Misra, K.
Niino, Y.
do E. S. Pedreira, A. C. C.
Kido, D.
Watson, A. M.
Volnova, A.
Kutyrev, A. S.
Ramirez, L. M. T.
Zoła, Stanisław
Lee, W. H.
Quadri, U.
Ruocco, N.
Li, L.
Dainotti, M. G.
Desai, S.
Pasumarti, V.
Siegel, M. H.
Kalinowski, K. K.
Lambiase, G.
De Simone, B.
Leonini, S.
Chan, L.
Hu, Y -D.
Jindal, I.
Cenko, S. B.
Fuentes, M.
Ramirez-Ruiz, E.
Belkin, S.
Mohideen Malik, R. F.
Opis:: We present the largest optical photometry compilation of gamma-ray bursts (GRBs) with redshifts (z). We include 64813 observations of 535 events (including upper limits) from 28 February 1997 to 18 August 2023. We also present a user-friendly web tool grbLC which allows users to visualize photometry, coordinates, redshift, host galaxy extinction, and spectral indices for each event in our database. Furthermore, we have added a Gamma-ray Coordinate Network (GCN) scraper that can be used to collect data by gathering magnitudes from the GCNs. The web tool also includes a package for uniformly investigating colour evolution. We compute the optical spectral indices for 138 GRBs, for which we have at least four filters at the same epoch in our sample, and craft a procedure to distinguish between GRBs with and without colour evolution. By providing a uniform format and repository for the optical catalogue, this web-based archive is the first step towards unifying several community efforts to gather the photometric information for all GRBs with known redshifts. This catalogue will enable population studies by providing light curves (LCs) with better coverage since we have gathered data from different ground-based locations. Consequently, these LCs can be used to train future LC reconstructions for an extended inference of the redshift. The data gathering also allows us to fill some of the orbital gaps from Swift in crucial points of the LCs, e.g. at the end of the plateau emission or where a jet break is identified.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

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Skocz do pozycji: 3.

Tytuł:: Genetic markers for the detection of quantitative trait loci with special consideration of body weight and fat
Autorzy:: Kopplow, K.
Das, P.
Brockmann, G. A.
Renne, U.
Powiązania:: Acta Theriologica
Opis:: Mouse chromosome 11 was analyzed for the presence of quantitative trait loci (QTL) affecting body weight and fatness. Significant differences in allele frequencies (p<10-2) between two growth differentiated mouse lines DU6 and DUKs were proven at the marker loci D11Mit120, D11Mit125, and D11Mit126. In families which were derived from crosses between DU6 and DUKs cosegregation of genetic marker alleles and individual trait performance was analyzed. Variance analysis proved highly significant phenotypic differences between genotype groups (p<10-5), localized in one family in the chromosomal part between D11Mit236 and D11Mit126. These results were confirmed in independent families of parallel crosses. The detected chromosomal region affected both, body weight and fatness.
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

Książka

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Skocz do pozycji: 4.

Tytuł:: Parameters estimation and life cycle economic analysis of a PV powered tri-cycle in India
Autorzy:: Das, S.
Sadhu, P. K.
Majhi, A.
Ghatak, U.
Bandyopadhya, T.
Tematy:: PV
tri-cycle
LCEA
fuel-based; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/141519.pdf Link otwiera się w nowym oknie
Opis:: This paper is devoted towards life cycle economic analysis (LCEA) of a solar photovoltaic (PV) powered tri-cycle. The paper is meant to propose a more systematic approach in determining the optimum use of scarce resources in order to determine the most cost-effective option of the solar tri-cycle. This analysis is based on the life cycle cost of this solar vehicle, involving its comparison with the customary fuel-based tri-cycle which exhibits the relatively less expenditure of the solar alternative. The economic analysis takes into account the fact that over 20 years, the overall price of solar component, replacement and electricity charges, is much lower as compared to that of a fuel-based tri-cycle in India taking into consideration the fuel cost, maintenance and annual inflation over the same period.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: Statistics of leading digits leads to unification of quantum correlations
Autorzy:: Sen, U.
Sadhukhan, D.
Pal, A. K.
Sen(De), A.
Chanda, Titas
Das, T.
Opis:: We show that the frequency distribution of the first significant digits of the numbers in the data sets generated from a large class of measures of quantum correlations, which are either entanglement measures or belong to the information-theoretic paradigm, exhibit a universal behavior. In particular, for Haar uniformly simulated arbitrary two-qubit states, we find that the first-digit distributions corresponding to a collection of chosen computable quantum correlation quantifiers tend to follow the first-digit law, known as Benford's law, when the rank of the states increases. Considering a two-qubit state which is obtained from a system governed by paradigmatic spin Hamiltonians, namely, the XY model in a transverse field, and the XXZ model, we show that entanglement as well as information-theoretic measures violate Benford's law. We quantitatively discuss the violation of Benford's law by using a violation parameter, and demonstrate that the violation parameter can signal quantum phase transitions occurring in these models. We also comment on the universality of the statistics of the first significant digits corresponding to appropriate measures of quantum correlations in the case of multipartite systems as well as systems in higher dimensions.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego