Fruit and Vegetables Go Back to School

Food Consumption/Nutrition/Food Safety, I38, Q18,

More Than Just Food: The Diverse Effects of Food Assistance Programs

Food Consumption/Nutrition/Food Safety, Food Security and Poverty, I18, I38, Q18,

Paperless Food Assistance: The Impact of Electronic Benefits on Program Participation

Food Stamp Program, Electronic Benefits, Program Participation, Food Security and Poverty, Health Economics and Policy, I38, C23, C25,

On special limits of the Mixed Painlev\'e PIII−V_{\mathbf{III-V}} Model

The paper discusses P$_{III-V}$ equation for special values of its parameters for which this equation reduces to P$_{III}$, I$_{12}$, as well as, to some special cases of I$_{38}$ and I$_{49}$ equations from the Ince's list of $50$ second order differential equations possessing Painlev\'e property. These reductions also yield symmetries governing the reduced models obtained from the P$_{III-V}$ equation. We point out that the solvable equations on Ince's list emerge in this reduction scheme when the underlying reflections of the Weyl symmetry group no longer include an affine reflection through the hyperplane orthogonal to the highest root and therefore do not give rise to an affine Weyl group. We hypothesize that on the level of the underlying algebra and geometry this might be a fundamental feature that distinguishes the six Painlev\'e equations from the remaining $44$ solvable equations on the Ince's list.Comment: 10 pages, Proc. of the 32nd International Colloquium on Group Theoretical Methods in Physics (Group32), 2018, Prague, Czech Republi

The Effects of the Food Stamp Program on Energy Balance and Obesity

The Effects of the Food Stamp Program on Energy Balance and ObesityFood Stamp Program (FSP), Supplemental Nutrition Assistance Program (SNAP), obesity, body mass index (BMI), nutrition assistance, Food Consumption/Nutrition/Food Safety, Q18, H53, I12, I18, I38,

Impact of the National School Lunch Program on Children’s Food Security

National School Lunch, Food Insecurity, Ordered Probit, Instrumental Variables, Agricultural and Food Policy, Food Consumption/Nutrition/Food Safety, Food Security and Poverty, Health Economics and Policy, I18, I38, P46, Q18, R28,

Employment as a factor increasing the population well-being in a social market economy

The paper infers competiveness of a national economy in connection with the country’s capacity to provide sufficient and sustainable employment. The author argues the importance of reverse link that goes from sustainable employment and well-being in a country to competiveness of national economy. It is concluded that active social policy is important tool in providing impulses to competitiveness of economy,Competitiveness, employment, life quality, social policy, profits, welfare., Labor and Human Capital, H30, I38,

Re-estimation of argon isotope ratios leading to a revised estimate of the Boltzmann constant

In 2013, NPL, SUERC and Cranfield University published an estimate for the Boltzmann constant [1] based on a measurement of the limiting low-pressure speed of sound in argon gas. Subsequently, an extensive investigation by Yang et al [2] revealed that there was likely to have been an error in the estimate of the molar mass of the argon used in the experiment. Responding to [2], de Podesta et al revised their estimate of the molar mass [3]. The shift in the estimated molar mass, and of the estimate of kB, was large: -2.7 parts in 106, nearly four times the original uncertainty estimate. The work described here was undertaken to understand the cause of this shift and our conclusion is that the original samples were probably contaminated with argon from atmospheric air.
 In this work we have repeated the measurement reported in [1] on the same gas sample that was examined in [2, 3]. However in this work we have used a different technique for sampling the gas that has allowed us to eliminate the possibility of contamination of the argon samples. We have repeated the sampling procedure three times, and examined samples on two mass spectrometers. This procedure confirms the isotopic ratio estimates of Yang et al [2] but with lower uncertainty, particularly in the relative abundance ratio R38:36.
 Our new estimate of the molar mass of the argon used in Isotherm 5 in [1] is 39.947 727(15) g mol-1 which differs by +0.50 parts in 106 from the estimate 39.947 707(28) g mol-1 made in [3]. This new estimate of the molar mass leads to a revised estimate of the Boltzmann constant of kB = 1.380 648 60 (97) × 10−23 J K−1 which differs from the 2014 CODATA value by +0.05 parts in 106.&#13

Symmetries and hamiltonians of Ince's XXXVIII and XLIX equations

We discuss symmetries of Hamiltonians of I$_{38}$ and I$_{49}$ equations that appear on Ince's list of fifty second-order differential equations with Painlev\'e property. This study is informed by structure of Weyl symmetries of Painlev\'e P$_{III}$ and mixed Painlev\'e P$_{III-V}$ equations and provides insights into differences between the symmetries of Painlev\'e equations and symmetries of solvable equations on Ince's list.Comment: 9 pages, Proc. of the 32nd International Colloquium on Group Theoretical Methods in Physics (Group32), 2018, Prague, Czech Republi

The wage elasticity of labour demand in the Uruguayan manufacturing sector after re-unionisation: new results

This paper provides new evidence on the magnitude of the elasticity of substitution between labour and capital for the Uruguayan manufacturing sector. Labour demand is derived using a right-to-manage model estimated for the period 1985-1997 using data for six industries. The evidence found suggests that the elasticity is generally less than 1. Differences by industry and in time are also found. The latter result may be linked both to the integration process underwent by Uruguay in the nineties and to the changes in the bargaining framework that took place in that same period. As a nested CES production function is used to derive the labour demand, the partial elasticity of substitution between production and non-production workers is also calculated, being its magnitude quite low. Finally, the model was estimated using data from industrial surveys (gathered from firms) and from household surveys. The comparison of results shows that when using industrial surveys data the estimated elasticities are higher than when using household surveys data. The result is probably related to the different coverage of both sources, as well as to the different accuracy reached in measuring wages.