Detection of Signals from Cosmic Reionization using Radio Interferometric Signal Processing (2009)
Datta, A., Bhatnagar, S., Carilli, C. L.
Observations of the HI 21cm transition line promises to be an important probe into the cosmic dark ages and epoch of reionization. One of the challenges for the detection of this signal is the...
Verlag, 1980. Supervisory Control of Probabilistic Discrete-Event Systems with Recovery (2009)
A. Arapostathis, V. S. Borkar, E. Fern, M. Ghosh, S. I. Marcus, ...
ergodic control of semi-Markov processes, ” Math. Oper. Res., vol. 20, pp. 923–936, 1995. [3] V. S. Borkar, “On minimum cost per unit time control of Markov chains, ” SIAM J. Contr. Optim.,...
Many scientific deliverables of the next generation low frequency radio telescopes require high dynamic range imaging. Next generation telescopes under construction indeed promise at least a ten-fold...
Nature of X-shaped sources (2009)
Lal, D. V., Hardcastle, M. J., Kraft, R. P., Cheung, C. C., Lobanov, A. P., Zensus, J. A., ...
The nature of X-shaped sources is a matter of considerable debate: it has even been proposed that they provide evidence for black hole mergers$ / $spin reorientation, and therefore constrain the rate...
Advances in Calibration and Imaging Techniques in Radio Interferometry (2009)
Rau, U., Bhatnagar, S., Voronkov, M. A., Cornwell, T. J.
Due to publisher restrictions, the initial submission of this paper to arXiv was premature and is being withdrawn. It will be re-posted after it has appeared in print. (accepted on 26 Jan 2009 for...
Breaking bad news issues: A survey among radiation oncologists (2009)
Kumar, M, Goyal, S, Singh, K, Pandit, S, Sharma, DN, Verma, AK, ...
Multimedia Systems manuscript No. (will be inserted by the editor) (2008)
Sudha Velusamy, Lakshmi Gopal, Shalabh Bhatnagar, V Sridhar, S. Bhatnagar
Abstract With broadcast Television (TV) going digital, the number of channels and the programs aired have increased tremendously. Millions of audiences of various categories such as adults, children,...
An extension of Wick’s theorem (2008)
C. Vignat, S. Bhatnagar, Xt Σ X
We propose an extension of a result by Repetowicz et al. (Repetowicz 2004) about Wick’s theorem and its applications: we first show that Wick’s theorem can be extended to the uniform distribution...
Combining Abilities of Quality Protein Maize Inbreds (2008)
S. Bhatnagar, F. J. Betrán, L. W. Rooney
ABSTRACT content in maize alone can add an estimated annual Development and adoption of quality protein maize (Zea mays L.) (QPM) would increase the nutritional value of food and feed maize products....
An extension of Wick's theorem (2008)
We propose an extension of a result by Repetowicz et al. [Repetowicz, P., Richmond, P., 2004. The Wick theorem for non-Gaussian distributions and its application for noise filtering of correlated...
The non-coplanar baselines effect in radio interferometry: The W-Projection algorithm (2008)
Cornwell, T. J., Golap, K., Bhatnagar, S.
We consider a troublesome form of non-isoplanatism in synthesis radio telescopes: non-coplanar baselines. We present a novel interpretation of the non-coplanar baselines effect as being due to...
Radiofrequency ablation of hepatic metastasis: Results of treatment in forty patients (2008)
Rath, GK, Julka, PK, Thulkar, S, Sharma, DN, Bahl, Amit, Bhatnagar, S
Aim: To evaluate the local control of hepatic metastasis with radiofrequency ablation treatment. Materials and Methods: We did a retrospective analysis in 40 patients treated with radiofrequency...
Radiofrequency ablation in liver metastasis: Authors' reply (2008)
Rath, GK, Julka, PK, Thulkar, S, Sharma, DN, Bahl, A, Bhatnagar, S
Correcting direction-dependent gains in the deconvolution of radio interferometric images (2008)
Bhatnagar, S., Cornwell, T. J., Golap, K., Uson, Juan M.
Astronomical imaging using aperture synthesis telescopes requires deconvolution of the point spread function as well as calibration of instrumental and atmospheric effects. In general, such effects...
Radiofrequency ablation in liver metastasis: Authors' reply (2008)
Rath, GK, Julka, PK, Thulkar, S, Sharma, DN, Bahl, Amit, Bhatnagar, S
Radiofrequency ablation of hepatic metastasis: Results of treatment in forty patients (2008)
Rath, G, Julka, P, Thulkar, S, Sharma, D, Bahl, A, Bhatnagar, S
Gelfand-Yaglom-Perez theorem for generalized relative entropy functionals (2007)
Dukkipati, A, Bhatnagar, S, Murty, MN
The measure-theoretic definition of Kullback-Leibler relative-entropy (or simply KL-entropy) plays a basic role in defining various classical information measures on general spaces. Entropy, mutual...
An extension of Wick's theorem (2007)
We propose an extension of a result by Repetowicz et al. about Wick's theorem and its applications: we first show that Wick's theorem can be extended to the uniform distribution on the sphere and...
A high quality draft consensus sequence of the genome of a heterozygous grapevine variety (2007)
VELASCO, R, ZHARKIKH, A, TROGGIO, M, CARTWRIGHT, D, CESTARO, A, PRUSS, D, ...
We develop a simulation-based, two-timescale actor-critic algorithm for infinite horizon Markov decision processes with finite state and action spaces, with a discounted reward criterion. The...
A Simulation-Based Algorithm for Ergodic Control of Markov Chains Conditioned on Rare Events (2006)
S. Bhatnagar, V. S. Borkar, A. Madhukar
We study the problem of long-run average cost control of Markov chains conditioned on a rare event. In a related recent work, a simulation based algorithm for estimating performance measures...
The Late-Time Radio Emission from SN 1993J at Meter Wavelengths (2004)
Chandra, P, Ray, A, Bhatnagar, S
This paper presents the investigations of SN 1993J using low-frequency observations with the Giant Metrewave Radio Telescope (GMRT). We analyze the light curves of SN 1993J at 1420, 610, 325, and 243...
Green, D. A., Lacy, M., Bhatnagar, S., Gates, E. L., Warner, P. J.
Radio and near-infared observations towards the steep spectrum Galactic plane radio source WKB 0314+57.8 are presented, in order to clarify the nature of this source. The radio observations include...
Bhatnagar, S., Cornwell, T. J.
Deconvolution of the telescope Point Spread Function (PSF) is necessary for even moderate dynamic range imaging with interferometric telescopes. The process of deconvolution can be treated as a...
The late time radio emission from SN 1993J at meter wavelengths (2004)
Chandra, P., Ray, A., Bhatnagar, S.
We present the investigations of SN 1993J using low frequency observations with the Giant Meterwave Radio Telescope. We analyze the light curves of SN 1993J at 1420, 610, 325 and 243 MHz during...
The Late-Time Radio Emission from SN 1993J at Meter Wavelengths (2004)
Chandra, P, Ray, A, Bhatnagar, S
This paper presents the investigations of SN 1993J using low-frequency observations with the Giant Metrewave Radio Telescope (GMRT). We analyze the light curves of SN 1993J at 1420, 610, 325, and 243...
Abstract. Deconvolution of the telescope Point Spread Function (PSF) is necessary for even moderate dynamic range imaging with interferometric telescopes. The process of deconvolution can be treated...
Low frequency observations of SN 1993J with Giant Meterwave Radio Telescope (2003)
Chandra, P., Ray, A., Bhatnagar, S.
In this paper, we discuss the low frequency spectrum of SN 1993J with GMRT. We observed SN 1993J at several epochs in 20cm, 50cm, 90cm and 125cm wavelengths and achieved near simultaneous spectra. We...
Low frequency radio and X-ray properties of core-collapse supernovae (2003)
Ray, A., Chandra, P., Sutaria, F., Bhatnagar, S.
Radio and X-ray studies of young supernovae probe the interaction between the supernova shock waves and the surrounding medium and give clues to the nature and past of the progenitor star. Here we...
Low frequency radio and X-ray properties of core-collapse supernovae (2003)
Ray, A, Chandra, P, Sutaria, F, Bhatnagar, S
Radio and X-ray studies of young supernovae probe the interaction between the supernova shock waves and the surrounding medium and give clues to the nature and past of the progenitor star. Here we...
Low frequency observations of SN 1993J with Giant Meterwave Radio Telescope (2003)
Chandra, P, Ray, A, Bhatnagar, S
In this paper, we discuss the low frequency spectrum of SN 1993J with GMRT. We observed SN 1993J at several epochs in 20cm, 50cm, 90cm and 125cm wavelengths and achieved near simultaneous spectra. We...
Bhatnagar, S, Khurana, Poonam; U0051998
An efficient and reproducible protocol for the production of transgenic plants was developed for Morus indica cv. K2 by Agrobacterium tumefaciens-mediated transformation. The hypocotyls, cotyledon,...
Low frequency radio and X-ray properties of core-collapse supernovae (2003)
Ray, A, Chandra, P, Sutaria, F, Bhatnagar, S
Radio and X-ray studies of young supernovae probe the interaction between the supernova shock waves and the surrounding medium and give clues to the nature and past of the progenitor star. Here we...
Low frequency observations of SN 1993J with Giant Meterwave Radio Telescope (2003)
Chandra, P, Ray, A, Bhatnagar, S
In this paper, we discuss the low frequency spectrum of SN 1993J with GMRT. We observed SN 1993J at several epochs in 20cm, 50cm, 90cm and 125cm wavelengths and achieved near simultaneous spectra. We...
The nature of the prompt X-ray and radio emission from SN2002ap (2002)
Sutaria, FK, Chandra, P, Bhatnagar, S, Ray, A
We report on the combined X-ray and radio observations of the type Ic SN 2002ap, using XMM-Newton ToO observation of M74 and the Giant Metrewave Radio Telescope (GMRT). We account for the presence of...
The nature of the prompt X-ray and radio emission from SN2002ap (2002)
Sutaria, F. K., Chandra, P., Bhatnagar, S., Ray, A.
We report on the combined X-ray and radio observations of the type Ic SN 2002ap, using XMM-Newton ToO observation of M74 and the Giant Metrewave Radio Telescope (GMRT). We account for the presence of...
Propofol for pediatric radiotherapy. (2002)
Punj, J, Bhatnagar, S, Saxena, A, Mishra, S, Kannan, T, Panigrahi, M, ...
The nature of the prompt X-ray and radio emission from SN2002ap (2002)
Sutaria, FK, Chandra, P, Bhatnagar, S, Ray, A
We report on the combined X-ray and radio observations of the type Ic SN 2002ap, using XMM-Newton ToO observation of M74 and the Giant Metrewave Radio Telescope (GMRT). We account for the presence of...
Sentra, a database of signal transduction proteins (2002)
Maltsev, Natalia, Marland, E., Yu, G. X., Bhatnagar, S., Lusk, R.
Sentra (http://www-wit.mcs.anl.gov/sentra) is a database of signal transduction proteins with the emphasis on microbial signal transduction. The database was updated to include classes of...
Effect of zinc supplementation on clinical course of acute diaffhoea (2001)
Bahl, R., Baqui, A., Bhan, M.K., Bhatnagar, S., Black, R.E., Brooks, A., ...
Evaluation of an algorithm for the treatment of persistent diarrhoea: a multicentre study (1996)
Ashraf, H., Bhan, M.K., Bhatnagar, S., Bhutta, Z., Brown, K.H., Dung, P.T., ...
A convex analytic framework for ergodic control of semi-Markov processes (1995)
The ergodic control problem for semi-Markov processes is reformulated as an optimization problem over the set of suitably defined `ergodic occupation measures'. This set is shown to be closed and...
A convex analytic framework for ergodic control of semi-Markov processes (1995)
The ergodic control problem for semi-Markov processes is reformulated as an optimization problem over the set of suitably defined `ergodic occupation measures'. This set is shown to be closed and...
The random pattern de-epithelialized turn over flap. (1987)
Bhatnagar, S, Pandey, A, Kumar, P, Sahi, R, Singh, O, Kalra, G
Two new quassinoids from Simaba multiflora fruits (1986)
Moretti, Christian, Bhatnagar, S., Beloeil, J.C., Polonsky, J.
Deux nouveaux quassinoïdes ont été isolés des fruits de Simaba multiflora récoltés en Guyane Française : la 13, 18-dehydro- 6 alpha-senecioyloxy-chaparinne et la 12-dehydro 6...
4-Saponines et sapogénines d'une holothurie Actinopyga flammea (1985)
Bhatnagar, S., Dudouet, B., Ahond, A., Poupat, C., Thoison, O., Clastres, Alain, ...
Sentra, a database of signal transduction proteins
Maltsev, Natalia, Marland, E., Yu, G. X., Bhatnagar, S., Lusk, R.
Sentra (http://www-wit.mcs.anl.gov/sentra) is a database of signal transduction proteins with the emphasis on microbial signal transduction. The database was updated to include classes of signal...
Bhatnagar, S, Banerjee, S S, Mene, A R, Prescott, R J, Eyden, B P
OBJECTIVE: A study of two cases of a rare variant of benign schwannoma showing areas mimicking neuroblastoma/peripheral primitive neuroectodermal tumour (PNET). METHODS: Sections of formalin fixed,...
Gastric polyposis caused by multiple carcinoids and early carcinoma.
A case of gastric polyposis caused by multiple carcinoids with concurrent gastric carcinoma is reported in a 70 year old woman with severe atrophic gastritis and intestinal metaplasia. On microscopic...
Sentra, a database of signal transduction proteins
Maltsev, Natalia, Marland, E., Yu, G. X., Bhatnagar, S., Lusk, R.
Sentra (http://www-wit.mcs.anl.gov/sentra) is a database of signal transduction proteins with the emphasis on microbial signal transduction. The database was updated to include classes of signal...
Bhatnagar, S, Banerjee, S S, Mene, A R, Prescott, R J, Eyden, B P
OBJECTIVE: A study of two cases of a rare variant of benign schwannoma showing areas mimicking neuroblastoma/peripheral primitive neuroectodermal tumour (PNET). METHODS: Sections of formalin fixed,...
Gastric polyposis caused by multiple carcinoids and early carcinoma.
A case of gastric polyposis caused by multiple carcinoids with concurrent gastric carcinoma is reported in a 70 year old woman with severe atrophic gastritis and intestinal metaplasia. On microscopic...
Association of antecedent malnutrition with persistent diarrhoea: a case-control study.
Bhandari, N., Bhan, M. K., Sazawal, S., Clemens, J. D., Bhatnagar, S., Khoshoo, V.
To determine the effect of nutritional state on persistent diarrhoea a case-control study was carried out on 756 children followed up prospectively for 18 months. Children who developed persistent...
An extension of Wick's theorem
We propose an extension of a result by Repetowicz et al. [Repetowicz, P., Richmond, P., 2004. The Wick theorem for non-Gaussian distributions and its application for noise filtering of correlated...