201,710 research outputs found
New properties of the Natarajan method of summability
No full textThe method of summability was introduced in 2013 by Natarajan. In the paper some new properties of this method are studied
Finding the Observed Information when Using Monte Carlo E M for Mixed Models with Partially Observed/Grouped Data
Full text link5 pages, 1 article*Finding the Observed Information when Using Monte Carlo E M for Mixed Models with Partially Observed/Grouped Data* (Natarajan, Ranjini; McCulloch, Charles E.) 5 page
Analysis of functionally graded material plates using triangular elements with cell-based smoothed discrete shear gap method
No full textA cell-based smoothed finite element method with discrete shear gap technique is employed to study the static bending, free vibration, and mechanical and thermal buckling behaviour of functionally graded material (FGM) plates. The plate kinematics is based on the first-order shear deformation theory and the shear locking is suppressed by the discrete shear gap method. The shear correction factors are evaluated by employing the energy equivalence principle. The material property is assumed to be temperature dependent and graded only in the thickness direction. The effective properties are computed by using the Mori-Tanaka homogenization method. The accuracy of the present formulation is validated against available solutions. A systematic parametric study is carried out to examine the influence of the gradient index, the plate aspect ratio, skewness of the plate, and the boundary conditions on the global response of the FGM plates. The effect of a centrally located circular cutout on the global response is also studied. © 2014 S. Natarajan et al
Maximum Likelihood for the Multinomial Probit Model
Full text link37 pages, 1 article*Maximum Likelihood for the Multinomial Probit Model* (Natarajan, Ranjini; McCulloch, Charles E.; Kiefer, Nicholas M.) 37 page
Studentische Rechtsberatung in der Refugee Law Clinic Hannover e. V.
No full textvon Horn K, Widdascheck M, Natarajan R. Studentische Rechtsberatung in der Refugee Law Clinic Hannover e. V. In: Supik L, Kleinschmidt M, Natarajan R, et al., eds. Gender, Race and Inclusive Citizenship. Dialoge zwischen Aktivismus und Wissenschaft. 1st ed. Wiesbaden: Springer VS; 2022: 351–366
The presence of coronary artery disease increases platelet-dependent thrombosis in patients with type 2 diabetes mellitus
No full text© 2009 International Society on Thrombosis and HaemostasisA. Natarajan, S. M. Marshall, S. G. Worthley, J. J. Badimon and A. G. Zama
Hidden From Heroin's History: Heroin Use and Dealing Within an English Asian Community - A Case Study
No full textSupermassive black hole formation during the assembly of pre-galactic discs
No full textIn this paper, we discuss the evolution of gravitationally unstable pre-galactic discs that result from the collapse of haloes at high redshift z approximate to 10 or so, which have not yet been enriched by metals. In cases where molecular hydrogen formation is suppressed, the discs are maintained at a temperature of a few thousand Kelvin. However, when molecular hydrogen is present, cooling can proceed down to a few hundred Kelvin. Analogous to the case of the larger-scale protogalactic discs, we assume that the evolution of these discs is mainly driven by angular momentum redistribution induced by the development of gravitational instabilities in the disc. We also properly take into account the possibility of disc fragmentation. We thus show that this simple model naturally predicts the formation of supermassive black holes in the nuclei of such discs and provides a robust determination of their mass distribution as a function of halo properties. We estimate that roughly 5 per cent of discs resulting from the collapse of haloes with M approximate to 10(7) M-. should host a massive black hole with a mass M-BH approximate to 10(5) M-.. We confirm our arguments with time-dependent calculations of the evolution of the surface density and of the accretion rate in these primordial discs. The luminosity of the outer, colder disc is expected to be very low (in the range of a few thousand L-.), while the formation of the black hole is expected to produce a burst with a luminosity of a few times 10(9) L-.. This mechanism offers an efficient way to form seed black holes at high redshift. The predicted masses for our black hole seeds enable the comfortable assembly of 10(9)-M-. black holes powering the luminous quasars detected by the Sloan Digital Sky Survey at z = 6 for a concordance cosmology
Cybercolonialism and Citizenship
No full textTuzcu P, Kleinschmidt M, Natarajan R. Cybercolonialism and Citizenship. In: Supik L, Kleinschmidt M, Natarajan R, et al., eds. Gender, Race and Inclusive Citizenship. Dialoge zwischen Aktivismus und Wissenschaft. 1st ed. Wiesbaden: Springer VS; 2022: 431–448.After digitalisation was seen as a great opportunity for the emancipation of subjects in the 1990s and early 2000s (Block and Dickel 2020), it has become increasingly apparent in recent years that even supposedly neutral algorithms perpetuate and reinforce social inequalities, e.g. with regard to race and gender. Thus, the continuity of colonial discourse is becoming the focus of the debate on these processes. In conversation with Radhika Natarajan and Malte Kleinschmidt, Pinar Tuzcu explains how colonialism is reproduced in the digital world, and discusses political strategies to address this issue
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