Sujay Datta - Academia.edu (original) (raw)
Papers by Sujay Datta
Journal of the American Statistical Association, 2010
Japanese Journal of Statistics and Data Science
Macromolecules
A model system of styrene (St) and methyl methacrylate (MMA) was copolymerized in an NMR tube at ... more A model system of styrene (St) and methyl methacrylate (MMA) was copolymerized in an NMR tube at 60°C using 2,2′-azobis(isobutyronitrile) as the initiator and pyridazine as an internal standard to optimize an in situ 1 H NMR spectroscopic method for determining reactivity ratios by generating data at hundreds of instantaneous comonomer compositions (244 data points from 8 to 91 mol % St) starting with only nine initial comonomer compositions. The radical reactivity ratios of styrene (r St = 0.697 ± 0.010) and methyl methacrylate (r MMA = 0.491 ± 0.007) were determined by nonlinear least-squares fitting of a Mayo−Lewis plot of the instantaneous copolymer composition as a function of the comonomer feed composition using the terminal model and MINITAB statistical software, in which the copolymer composition was calculated by assuming that all comonomer consumed was converted to copolymer without side reactions; the results were similar to accepted literature values for the terminal and implicit penultimate models. After correcting for changes in the "lock" value at the initial stages of the copolymerization (because of solids formed in the sealed NMR tube), the same technique was used to determine the reactivity ratios of 2-(N-ethylperfluorooctanesulfonamido)ethyl acrylate (FOSA; r FOSA = 1.624 ± 0.048) and 2-(N-ethylperfluorooctanesulfonamido)ethyl methacrylate (FOSM; r FOSM = 2.876 ± 0.083) in their radical copolymerizations with N,Ndimethylacrylamide (DMA; r DMA = 1.126 ± 0.031 with FOSA; r DMA = 0.859 ± 0.026 with FOSM).
Springer Proceedings in Mathematics & Statistics, 2016
The Faseb Journal, Mar 1, 2008
The Faseb Journal, Mar 1, 2008
Advances on Theoretical and Methodological Aspects of Probability and Statistics, 2003
... 432 SUJAY DATTA of the ASN of the multistage procedure to the corresponding'opti... more ... 432 SUJAY DATTA of the ASN of the multistage procedure to the corresponding'optimal' fixed sample-size approaches 1 asymptotically; Asymptotic Second Order Efficiency in the sense of Ghosh and Mukhopadhyay (1981)if the difference between the ASN of the mul ...
Computational and mathematical methods in medicine, 2014
Frontiers in physiology, 2010
Aging is accompanied by considerable heterogeneity with possible co-expression of differentiation... more Aging is accompanied by considerable heterogeneity with possible co-expression of differentiation pathways. The present study investigates the interplay between crucial myogenic, adipogenic, and Wnt-related genes orchestrating aged myogenic progenitor differentiation (AMPD) using clonal gene expression profiling in conjunction with Bayesian structure learning (BSL) techniques. The expression of three myogenic regulatory factor genes (Myogenin, Myf-5, MyoD1), four genes involved in regulating adipogenic potential (C/EBPα, DDIT3, FoxC2, PPARγ), and two genes in the Wnt signaling pathway (Lrp5, Wnt5a) known to influence both differentiation programs were determined across 34 clones by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR). Three control genes were used for normalization of the clonal expression data (18S, GAPDH, and B2M). Constraint-based BSL techniques, namely (a) PC Algorithm, (b) Grow-shrink (GS) algorithm, and (c) Incremental Association Markov Blan...
Journal of Nutrition, 2011
The frequency of multiple fetuses has increased in human pregnancies due to assisted reproductive... more The frequency of multiple fetuses has increased in human pregnancies due to assisted reproductive technologies. This translates into a greater proportion of premature and low-birth weight infants in the United States and worldwide. In addition, improvements in sheep breeding have resulted in new breeds with increased litter size but reduced fetal survival and birth weight. Currently, there are no treatments for preventing fetal growth restriction in humans or sheep (an established model for studying human fetal physiology) carrying multiple fetuses. In this work, Booroola Rambouillet ewes (FecB+/2) with 2-4 fetuses were fed a diet providing 100% of NRC-recommended nutrient requirements. Between d 100 and 121 of gestation, ewes received an i.v. bolus injection of either saline solution or 345 mmol arginine-HCl/kg body weight 3 times daily. The arginine treatment reduced (P , 0.05) the percentage of lambs born dead by 23% while increasing (P = 0.05) the percentage of lambs born alive by 59%. The i.v. administration of arginine enhanced (P , 0.05) the birth weights of quadruplets by 23% without affecting maternal body weight. The improved pregnancy outcome was associated with an increase in maternal plasma concentrations of arginine, ornithine, cysteine, and proline, as well as a decrease in circulating levels of ammonia and b-hydroxybutyrate. These novel results indicate that parenteral administration of arginine to prolific ewes ameliorated fetal mortality and growth retardation. Our findings provide support for experiments to assess the clinical use of arginine to enhance fetal growth and survival in women gestating multiple fetuses.
Sequential Analysis, 2005
Page 1. Sequential Analysis, 24: 2343, 2005 Copyright © Taylor & Francis, Inc. ISSN: 0747-49... more Page 1. Sequential Analysis, 24: 2343, 2005 Copyright © Taylor & Francis, Inc. ISSN: 0747-4946 print/1532-4176 online DOI: 10.1081/SQA-200046827 Asymmetric Penalized Prediction Using Adaptive Sampling Procedures ...
Sequential Analysis, 2004
... Discussion on Likelihood Ratio Identities and their Applications to Sequential Analysis by ... more ... Discussion on Likelihood Ratio Identities and their Applications to Sequential Analysis by Tze L. Lai. View full textDownload full text Full access. DOI: 10.1081/SQA-200039025 Sujay Datta a b * pages 537-539. ... Notes. Recommened by Nitis Mukhopadhyay. References. ...
Sequential Analysis, 2002
... Sujay Datta a pages 161-190. ... Sequential Anal. , 9: 243268. [Taylor & Francis... more ... Sujay Datta a pages 161-190. ... Sequential Anal. , 9: 243268. [Taylor & Francis Online] View all references, Mukhopadhyay and Abid (1986)[16]16. Mukhopadhyay, N. and Abid, AD 1986. On Fixed-Size Confidence Regions for the Regression Parameters. Metron. , 44: 197206. ...
South African Statistical …, 1995
Arch Fur Tierzucht-Arch …, 2008
... Because heritability for the number of piglets born alive is low (0.06-0.09; Haley and Lee, 1... more ... Because heritability for the number of piglets born alive is low (0.06-0.09; Haley and Lee, 1992; Lund et al., 2002), improvement in litter size through animal breeding has been slow (Distl, 2007). ... J. Anat. 152, 107-119. Haley, CS, Lee, GJ 1992. ...
Biometrics, 2008
... Keles Uriel Kitron Charles Kooperberg Debasis Kundu Lynn Kuo Gordon Lan Hongzhe Li Geoff McLa... more ... Keles Uriel Kitron Charles Kooperberg Debasis Kundu Lynn Kuo Gordon Lan Hongzhe Li Geoff McLachlan Giovanni Parmigiani Limin Peng John Pinney Xing Qiu Glen Satten Rob Scharpf Douglas Schaubel Pranab Sen Saunak Sen Kerby ... in Ayanendranath Basu, Applied Stat ...
Annals of the Institute of Statistical Mathematics, 1996
In order to construct fixed-width (2d) confidence intervals for the mean of an unknown distributi... more In order to construct fixed-width (2d) confidence intervals for the mean of an unknown distribution function F, a new purely sequential sampling strategy is proposed first. The approach is quite different from the more traditional methodology of Chow and Robbins (1965, Ann. Math. Statist., 36, 457-462). However, for this new procedure, the coverage probability is shown (Theorem 2.1) to be at least (1-a) + Ad 2 + o(d 2) as d-* 0 where (1-(~) is the preassigned level of confidence and A is an appropriate functional of F, under some regularity conditions on F. The rates of convergence of the coverage probability to (1-a) obtained by Csenki (1980,
... Keles Uriel Kitron Charles Kooperberg Debasis Kundu Lynn Kuo Gordon Lan Hongzhe Li Geoff McLa... more ... Keles Uriel Kitron Charles Kooperberg Debasis Kundu Lynn Kuo Gordon Lan Hongzhe Li Geoff McLachlan Giovanni Parmigiani Limin Peng John Pinney Xing Qiu Glen Satten Rob Scharpf Douglas Schaubel Pranab Sen Saunak Sen Kerby ... in Ayanendranath Basu, Applied Stat ...
Amino Acids, 2009
Cholesterol and docosahexaenoic acid (DHA) are important nutrients for neural development of infa... more Cholesterol and docosahexaenoic acid (DHA) are important nutrients for neural development of infants. However, little is known about the effect of cholesterol or DHA on concentrations of amino acids (AA) in neonatal tissues. This study was conducted with the piglet (an established model for studying human infant nutrition) to test the hypothesis that dietary supplementation with the lipids may modulate AA availability in tissues. Sixteen newborn pigs were nursed by sows for 24 h and then assigned to one of four treatment groups, representing supplementation with 0.0% (control), 0.2% cholesterol, 0.2% DHA, or cholesterol plus DHA to the basal milk-formula. All piglets were euthanized at 49 days of age. In brain, cholesterol supplementation reduced (P < 0.05) concentrations of glutamate, serine, glutamine, threonine, beta-alanine, alanine, methionine, isoleucine, leucine, and gamma-aminobutyrate but increased (P < 0.05) concentrations of glycine and lysine, whereas DHA supplementation similarly affected (P < 0.05) concentrations of the same AA (except for isoleucine and lysine) and taurine. In addition, concentrations of most AA in liver, muscle and plasma were substantially altered by dietary supplementation of cholesterol and DHA in a tissue-dependent manner. Further, DHA reduced concentrations of carnosine in skeletal muscle, as well as ammonia in both plasma and brain. The results reveal that cholesterol and DHA can regulate AA metabolism and availability in various tissues of piglets. These novel findings have important implications for designing the next generation of infant formula to optimize neonatal growth and development.
Sequential Analysis, 2005
Page 1. Sequential Analysis, 24: 2343, 2005 Copyright © Taylor & Francis, Inc. ISSN: 0747-49... more Page 1. Sequential Analysis, 24: 2343, 2005 Copyright © Taylor & Francis, Inc. ISSN: 0747-4946 print/1532-4176 online DOI: 10.1081/SQA-200046827 Asymmetric Penalized Prediction Using Adaptive Sampling Procedures ...
Journal of the American Statistical Association, 2010
Japanese Journal of Statistics and Data Science
Macromolecules
A model system of styrene (St) and methyl methacrylate (MMA) was copolymerized in an NMR tube at ... more A model system of styrene (St) and methyl methacrylate (MMA) was copolymerized in an NMR tube at 60°C using 2,2′-azobis(isobutyronitrile) as the initiator and pyridazine as an internal standard to optimize an in situ 1 H NMR spectroscopic method for determining reactivity ratios by generating data at hundreds of instantaneous comonomer compositions (244 data points from 8 to 91 mol % St) starting with only nine initial comonomer compositions. The radical reactivity ratios of styrene (r St = 0.697 ± 0.010) and methyl methacrylate (r MMA = 0.491 ± 0.007) were determined by nonlinear least-squares fitting of a Mayo−Lewis plot of the instantaneous copolymer composition as a function of the comonomer feed composition using the terminal model and MINITAB statistical software, in which the copolymer composition was calculated by assuming that all comonomer consumed was converted to copolymer without side reactions; the results were similar to accepted literature values for the terminal and implicit penultimate models. After correcting for changes in the "lock" value at the initial stages of the copolymerization (because of solids formed in the sealed NMR tube), the same technique was used to determine the reactivity ratios of 2-(N-ethylperfluorooctanesulfonamido)ethyl acrylate (FOSA; r FOSA = 1.624 ± 0.048) and 2-(N-ethylperfluorooctanesulfonamido)ethyl methacrylate (FOSM; r FOSM = 2.876 ± 0.083) in their radical copolymerizations with N,Ndimethylacrylamide (DMA; r DMA = 1.126 ± 0.031 with FOSA; r DMA = 0.859 ± 0.026 with FOSM).
Springer Proceedings in Mathematics & Statistics, 2016
The Faseb Journal, Mar 1, 2008
The Faseb Journal, Mar 1, 2008
Advances on Theoretical and Methodological Aspects of Probability and Statistics, 2003
... 432 SUJAY DATTA of the ASN of the multistage procedure to the corresponding'opti... more ... 432 SUJAY DATTA of the ASN of the multistage procedure to the corresponding'optimal' fixed sample-size approaches 1 asymptotically; Asymptotic Second Order Efficiency in the sense of Ghosh and Mukhopadhyay (1981)if the difference between the ASN of the mul ...
Computational and mathematical methods in medicine, 2014
Frontiers in physiology, 2010
Aging is accompanied by considerable heterogeneity with possible co-expression of differentiation... more Aging is accompanied by considerable heterogeneity with possible co-expression of differentiation pathways. The present study investigates the interplay between crucial myogenic, adipogenic, and Wnt-related genes orchestrating aged myogenic progenitor differentiation (AMPD) using clonal gene expression profiling in conjunction with Bayesian structure learning (BSL) techniques. The expression of three myogenic regulatory factor genes (Myogenin, Myf-5, MyoD1), four genes involved in regulating adipogenic potential (C/EBPα, DDIT3, FoxC2, PPARγ), and two genes in the Wnt signaling pathway (Lrp5, Wnt5a) known to influence both differentiation programs were determined across 34 clones by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR). Three control genes were used for normalization of the clonal expression data (18S, GAPDH, and B2M). Constraint-based BSL techniques, namely (a) PC Algorithm, (b) Grow-shrink (GS) algorithm, and (c) Incremental Association Markov Blan...
Journal of Nutrition, 2011
The frequency of multiple fetuses has increased in human pregnancies due to assisted reproductive... more The frequency of multiple fetuses has increased in human pregnancies due to assisted reproductive technologies. This translates into a greater proportion of premature and low-birth weight infants in the United States and worldwide. In addition, improvements in sheep breeding have resulted in new breeds with increased litter size but reduced fetal survival and birth weight. Currently, there are no treatments for preventing fetal growth restriction in humans or sheep (an established model for studying human fetal physiology) carrying multiple fetuses. In this work, Booroola Rambouillet ewes (FecB+/2) with 2-4 fetuses were fed a diet providing 100% of NRC-recommended nutrient requirements. Between d 100 and 121 of gestation, ewes received an i.v. bolus injection of either saline solution or 345 mmol arginine-HCl/kg body weight 3 times daily. The arginine treatment reduced (P , 0.05) the percentage of lambs born dead by 23% while increasing (P = 0.05) the percentage of lambs born alive by 59%. The i.v. administration of arginine enhanced (P , 0.05) the birth weights of quadruplets by 23% without affecting maternal body weight. The improved pregnancy outcome was associated with an increase in maternal plasma concentrations of arginine, ornithine, cysteine, and proline, as well as a decrease in circulating levels of ammonia and b-hydroxybutyrate. These novel results indicate that parenteral administration of arginine to prolific ewes ameliorated fetal mortality and growth retardation. Our findings provide support for experiments to assess the clinical use of arginine to enhance fetal growth and survival in women gestating multiple fetuses.
Sequential Analysis, 2005
Page 1. Sequential Analysis, 24: 2343, 2005 Copyright © Taylor & Francis, Inc. ISSN: 0747-49... more Page 1. Sequential Analysis, 24: 2343, 2005 Copyright © Taylor & Francis, Inc. ISSN: 0747-4946 print/1532-4176 online DOI: 10.1081/SQA-200046827 Asymmetric Penalized Prediction Using Adaptive Sampling Procedures ...
Sequential Analysis, 2004
... Discussion on Likelihood Ratio Identities and their Applications to Sequential Analysis by ... more ... Discussion on Likelihood Ratio Identities and their Applications to Sequential Analysis by Tze L. Lai. View full textDownload full text Full access. DOI: 10.1081/SQA-200039025 Sujay Datta a b * pages 537-539. ... Notes. Recommened by Nitis Mukhopadhyay. References. ...
Sequential Analysis, 2002
... Sujay Datta a pages 161-190. ... Sequential Anal. , 9: 243268. [Taylor & Francis... more ... Sujay Datta a pages 161-190. ... Sequential Anal. , 9: 243268. [Taylor & Francis Online] View all references, Mukhopadhyay and Abid (1986)[16]16. Mukhopadhyay, N. and Abid, AD 1986. On Fixed-Size Confidence Regions for the Regression Parameters. Metron. , 44: 197206. ...
South African Statistical …, 1995
Arch Fur Tierzucht-Arch …, 2008
... Because heritability for the number of piglets born alive is low (0.06-0.09; Haley and Lee, 1... more ... Because heritability for the number of piglets born alive is low (0.06-0.09; Haley and Lee, 1992; Lund et al., 2002), improvement in litter size through animal breeding has been slow (Distl, 2007). ... J. Anat. 152, 107-119. Haley, CS, Lee, GJ 1992. ...
Biometrics, 2008
... Keles Uriel Kitron Charles Kooperberg Debasis Kundu Lynn Kuo Gordon Lan Hongzhe Li Geoff McLa... more ... Keles Uriel Kitron Charles Kooperberg Debasis Kundu Lynn Kuo Gordon Lan Hongzhe Li Geoff McLachlan Giovanni Parmigiani Limin Peng John Pinney Xing Qiu Glen Satten Rob Scharpf Douglas Schaubel Pranab Sen Saunak Sen Kerby ... in Ayanendranath Basu, Applied Stat ...
Annals of the Institute of Statistical Mathematics, 1996
In order to construct fixed-width (2d) confidence intervals for the mean of an unknown distributi... more In order to construct fixed-width (2d) confidence intervals for the mean of an unknown distribution function F, a new purely sequential sampling strategy is proposed first. The approach is quite different from the more traditional methodology of Chow and Robbins (1965, Ann. Math. Statist., 36, 457-462). However, for this new procedure, the coverage probability is shown (Theorem 2.1) to be at least (1-a) + Ad 2 + o(d 2) as d-* 0 where (1-(~) is the preassigned level of confidence and A is an appropriate functional of F, under some regularity conditions on F. The rates of convergence of the coverage probability to (1-a) obtained by Csenki (1980,
... Keles Uriel Kitron Charles Kooperberg Debasis Kundu Lynn Kuo Gordon Lan Hongzhe Li Geoff McLa... more ... Keles Uriel Kitron Charles Kooperberg Debasis Kundu Lynn Kuo Gordon Lan Hongzhe Li Geoff McLachlan Giovanni Parmigiani Limin Peng John Pinney Xing Qiu Glen Satten Rob Scharpf Douglas Schaubel Pranab Sen Saunak Sen Kerby ... in Ayanendranath Basu, Applied Stat ...
Amino Acids, 2009
Cholesterol and docosahexaenoic acid (DHA) are important nutrients for neural development of infa... more Cholesterol and docosahexaenoic acid (DHA) are important nutrients for neural development of infants. However, little is known about the effect of cholesterol or DHA on concentrations of amino acids (AA) in neonatal tissues. This study was conducted with the piglet (an established model for studying human infant nutrition) to test the hypothesis that dietary supplementation with the lipids may modulate AA availability in tissues. Sixteen newborn pigs were nursed by sows for 24 h and then assigned to one of four treatment groups, representing supplementation with 0.0% (control), 0.2% cholesterol, 0.2% DHA, or cholesterol plus DHA to the basal milk-formula. All piglets were euthanized at 49 days of age. In brain, cholesterol supplementation reduced (P < 0.05) concentrations of glutamate, serine, glutamine, threonine, beta-alanine, alanine, methionine, isoleucine, leucine, and gamma-aminobutyrate but increased (P < 0.05) concentrations of glycine and lysine, whereas DHA supplementation similarly affected (P < 0.05) concentrations of the same AA (except for isoleucine and lysine) and taurine. In addition, concentrations of most AA in liver, muscle and plasma were substantially altered by dietary supplementation of cholesterol and DHA in a tissue-dependent manner. Further, DHA reduced concentrations of carnosine in skeletal muscle, as well as ammonia in both plasma and brain. The results reveal that cholesterol and DHA can regulate AA metabolism and availability in various tissues of piglets. These novel findings have important implications for designing the next generation of infant formula to optimize neonatal growth and development.
Sequential Analysis, 2005
Page 1. Sequential Analysis, 24: 2343, 2005 Copyright © Taylor & Francis, Inc. ISSN: 0747-49... more Page 1. Sequential Analysis, 24: 2343, 2005 Copyright © Taylor & Francis, Inc. ISSN: 0747-4946 print/1532-4176 online DOI: 10.1081/SQA-200046827 Asymmetric Penalized Prediction Using Adaptive Sampling Procedures ...