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RISS 인기검색어
- 검색키워드
- 저자 : K.R. Shanmugam (검색결과 5 건)
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Health, Technical Efficiency, and Agricultural Production in Indian Districts
Atheendar S. Venkataramani;K.R. Shanmugam;Jennifer Prah Ruger 경제연구소 2010 Journal of Economic Development Vol.35 No.4
We investigate whether better population health may impact economic performance through improvements in technical efficiency in agricultural production. Using district-level data from India, we employ a random-coefficients approach to estimate a Cobb-Douglas production function, computing overall and input-specific technical efficiencies for each district. We then model health (district infant mortality rate) as a determinant of (in)efficiency in a second stage, controlling for a range of other socioeconomic variables. In the preferred specifications, we find that decreases in the infant mortality rate are associated with substantively and statistically significant increases in overall technical efficiency, and that a good portion of this association is likely due to improvements in the efficiency of labor use.
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Vengatesan, G.,Shanmugam, P.,Venkatesan, R.,Vedachalam, N.,Joseph, Jossia K. Techno-Press 2020 Ocean systems engineering Vol.10 No.2
Cyclone Heat Potential (CHP) is an essential parameter for accurate prediction of the intensity of tropical cyclones. The variability of the heat storage in the near-surface layers and the vertical stratification near the surface due to large fresh water inputs create challenges in predicting the intraseasonal and interannual evolution of monsoons and tropical cyclones in the Bay of Bengal. This paper for the first time presents the D26- referenced cyclone heat potential observed in the Bay of Bengal during the period 2012-17 based on the in-situ data collected from 5.5 million demanding offshore instrument-hours of operation in the Ocean Moored Buoy Network for Northern Indian Ocean (OMNI) buoy network by the National Institute of Ocean Technology. It is observed that the CHP in the Bay of Bengal varied from 0-220 kJ/㎠ during various seasons. From the moored buoy observations, a CHP of ~ 90 kJ/㎠ with the D26 isotherm of minimum 100m is favorable for the intensification of the post-monsoon tropical cyclones. The responses of the D26 thermal structure during major tropical cyclone events in the Bay of Bengal are also presented.
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HEALTH, TECHNICAL EFFICIENCY, AND AGRICULTURAL PRODUCTION IN INDIAN DISTRICTS
Atheendar S. Venkataramani,K.R. Shanmugam,Jennifer Prah Ruger 중앙대학교 경제연구소 2010 Journal of Economic Development Vol.35 No.4
We investigate whether better population health may impact economic performance through improvements in technical efficiency in agricultural production. Using district-level data from India, we employ a random-coefficients approach to estimate a Cobb-Douglas production function, computing overall and input-specific technical efficiencies for each district. We then model health (district infant mortality rate) as a determinant of (in)efficiency in a second stage, controlling for a range of other socioeconomic variables. In the preferred specifications, we find that decreases in the infant mortality rate are associated with substantively and statistically significant increases in overall technical efficiency, and that a good portion of this association is likely due to improvements in the efficiency of labor use.
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Optical and electrochemical characteristics of Pb ions doped ZnO nanocrystals
N. Kannadasan,N. Shanmugam,S. Cholan,K. Sathishkumar,G. Viruthagiri,R. Poonguzhali 한국물리학회 2014 Current Applied Physics Vol.14 No.12
Herein, we report the optical and electrochemical properties of Pb ions doped ZnO nanocrystals fabricated via a simple chemical precipitation method. The structural and chemical compositions of the products are characterized by XRD, XPS, EDS and FT-IR spectroscopy. The observed results suggest that Pb ions are successfully incorporated into the ZnO lattice. The microstructures of the samples are analyzed by FESEM and confirmed by HRTEM. The PL emission spectra show an intensity quenching upon doping. Electrochemical performances show that the supercapacitor behavior of ZnO has been enhanced greatly on doping.
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Rajkumar, U.,Reddy, M.R.,Rao, S.V. Rama,Radhika, K.,Shanmugam, M. Asian Australasian Association of Animal Productio 2011 Animal Bioscience Vol.24 No.4
The performance of naked neck and normal chicken was evaluated with respect to growth, carcass, immune, biochemical and stress parameters under winter and summer seasons to assess the suitability of naked neck birds under high temperatures in the global scenario of climate change. The growth performance was significantly ($p{\leq}0.05$) higher in naked neck chicken in the summer season. The dressing percentage was significantly ($p{\leq}0.05$) higher in naked neck birds in both winter and summer season because of reduced plumage. The thigh, giblet and feather proportion significantly ($p{\leq}0.05$) varied between naked neck and normal chickens in summer season. The humeral immune response to sheep red blood cells (SRBC), Newcastle disease vaccine (NDV) and cutaneous basophil hypersensitivity (CBH) did not show any significant differences among the chicken groups. The protein and cholesterol concentration observed was within the normal ranges. The total cholesterol levels in plasma were significantly ($p{\leq}0.05$) lower in naked neck birds in both the seasons. H:L ratio was significantly ($p{\leq}0.05$) lower in summer season indicating less stress in naked neck chicken. Basophil and eosinophil concentration was significantly ($p{\leq}0.05$) higher in normal chicken in summer. The lipid peroxidation was higher in full feathered birds under summer stress. The enzyme glutathione reductase (GR) levels were significantly higher during the summer and varied significantly ($p{\leq}0.05$) between the normal and naked neck chicken in both seasons. The results indicated that the naked neck birds performed significantly better at high ambient temperatures with respect to growth, carcass and biochemical parameters. It was concluded that the ability of the naked neck chicken to adapt to high temperatures foresees a viable option for the biological mitigation of climate change.
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