77,119 research outputs found
Demand for Food of Indonesian Households: Evidence from Longitudinal Data
food demand, QUAIDS, Indonesia, Consumer/Household Economics, D11, D12,
Public Response to Large-Scale Produce Contamination
Consumer/Household Economics, Food Consumption/Nutrition/Food Safety, D12, D01, Q13,
Low temperature structural effects in the (TMTSF)PF and AsF Bechgaard salts
We present a detailed low-temperature investigation of the statics and
dynamics of the anions and methyl groups in the organic conductors
(TMTSF)PF and (TMTSF)AsF (TMTSF :
tetramethyl-tetraselenafulvalene). The 4 K neutron scattering structure
refinement of the fully deuterated (TMTSF)PF-D12 salt allows locating
precisely the methyl groups at 4 K. This structure is compared to the one of
the fully hydrogenated (TMTSF)PF-H12 salt previously determined at the
same temperature. Surprisingly it is found that deuteration corresponds to the
application of a negative pressure of 5 x 10 MPa to the H12 salt. Accurate
measurements of the Bragg intensity show anomalous thermal variations at low
temperature both in the deuterated PF and AsF salts. Two different
thermal behaviors have been distinguished. Low-Bragg-angle measurements reflect
the presence of low-frequency modes at characteristic energies {\theta} =
8.3 K and {\theta} = 6.7 K for the PF-D12 and AsF-D12 salts,
respectively. These modes correspond to the low-temperature methyl group
motion. Large-Bragg-angle measurements evidence an unexpected structural change
around 55 K which probably corresponds to the linkage of the anions to the
methyl groups via the formation of F...D-CD2 bonds observed in the 4 K
structural refinement. Finally we show that the thermal expansion coefficient
of (TMTSF)PF is dominated by the librational motion of the PF
units. We quantitatively analyze the low-temperature variation of the lattice
expansion via the contribution of Einstein oscillators, which allows us to
determine for the first time the characteristic frequency of the PF6
librations: {\theta} = 50 K and {\theta} = 76 K for the PF-D12 and
PF-H12 salts, respectively
Can Taxes on Calorically Sweetened Beverages Reduce Obesity?
Beverage tax, obesity, overweight, Food Consumption/Nutrition/Food Safety, D12, H2, I18,
Consumer Issues and Demand
Consumer/Household Economics, Livestock Production/Industries, D12, F13,
Advertising in the U.S. Non-Alcoholic Beverage Industry: Are Spillover Effects Negative or Positive? Revisited using a Dynamic Approach
Agricultural and Food Policy, Consumer/Household Economics, Demand and Price Analysis, D11, D12,
Household food expenditures in the United States: A Bayesian MCMC approach to censored equation systems
We apply a Bayesian Markov Chain Monte Carlo (MCMC) technique, along with data augmentation to accommodate censoring in the dependent variables, to the estimation of a large expenditure system of food expenditures. Our finding of significant error covariance estimates justifies estimation of the system in improving statistical efficiency. Income, household composition, regions and other socio-demographic variables are found to play significant roles in determining household food expenditures.Bayesian MCMC, Censored equation system, Consumer Expenditure Survey, Food Consumption/Nutrition/Food Safety, C11, C34, D12, C11, C34, D12,
Dynamics in the Use of Drugs
C41; D12; I19;alcohol;tobacco;cannabis;cocaine;ecstasy;drug use;age of onset
A Comparative Analysis of US and Canadian Consumers' Perceptions Towards BSE Testing and the use of GM Organisms in Beef Production: Evidence from a Choice Experiment
Replaced with revised version of paper 07/24/07.choice experiments, multinomial logit, beef labeling, Livestock Production/Industries, D12, L66, C35,
RURAL BROADBAND AVAILABILITY AND ADOPTION IN OKLAHOMA
Broadband Adoption, Rural Broadband Availability, Broadband Infrastructure, Broadband Digital Divide, Community/Rural/Urban Development, Research and Development/Tech Change/Emerging Technologies, R22, D12,
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