AN ECONOMIC MODEL OF WIC, THE INFANT FORMULA REBATE PROGRAM, AND THE RETAIL PRICE OF INFANT FORMULA

This report develops an economic model that provides the theoretical framework for the econometric analyses presented in the report's companion volume, WIC and the Retail Price of Infant Formula (FANRR-39). The model examines supermarket retail prices for infant formula in a local market area, and identifies the theoretical effects of the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) and its infant formula rebate program. Special attention is given to the rebate program's sole-source procurement system by which a single manufacturer becomes a State's "contract brand"-the State's one supplier of formula to WIC infants-in exchange for paying rebates to WIC. When a manufacturer's brand is designated a State's contract brand, the model predicts that supermarkets increase that brand's retail price. The model also predicts that an increase in the ratio of WIC to non-WIC formula-fed infants in a local market results in an increase in the price of the contract brand and, through demand substitution, a relatively small price increase for noncontract brands.WIC program, infant formula, cost containment, rebates, food package costs, Special Supplemental Nutrition Program for Women, Infants, Children, child nutrition, food assistance, Food Security and Poverty,

Measurements of CP Violation, Mixing and Lifetimes of B Mesons with the BaBar Detector

We report the observation of CP violation in the $B^0$ meson system. Using a novel technique for time-dependent measurements, we measure a non-zero value for the CP-violating amplitude $\sin 2\beta$ at the 4.1 $\sigma$ level. We also report on precision measurements of the $B^+$ and $B^0$ lifetimes and the $B^0\bar{B}^0$ mixing frequency $\Delta m_d$ obtained with the same technique and on a first measurement of the time-dependent CP-violating amplitude in $B^0\to \pi^+\pi^-$ decays.Comment: 14 pages, 9 postscript figues, submitted to 9th International Symposium of Heavy Flavor Physic

Three hundred eighty thousand year long stable isotope and faunal records from the Red Sea : influence of global sea level change on hydrography

Stable isotope and faunal records from the central Red Sea show high-amplitude oscillations for the past 380,000 years. Positive δ18O anomalies indicate periods of significant salt buildup during periods of lowered sea level when water mass exchange with the Arabian Sea was reduced due to a reduced geometry of the Bab el Mandeb Strait. Salinities as high as 53‰ and 55‰ are inferred from pteropod and benthic foraminifera δ18O, respectively, for the last glacial maximum. During this period all planktonic foraminifera vanished from this part of the Red Sea. Environmental conditions improved rapidly after 13 ka as salinities decreased due to rising sea level. The foraminiferal fauna started to reappear and was fully reestablished between 9 ka and 8 ka. Spectral analysis of the planktonic δ18O record documents highest variance in the orbital eccentricity, obliquity, and precession bands, indicating a dominant influence of climatically - driven sea level change on environmental conditions in the Red Sea. Variance in the precession band is enhanced compared to the global mean marine climate record (SPECMAP), suggesting an additional influence of the Indian monsoon system on Red Sea climates

Late quaternary time series of Arabian Sea productivity: Global and regional signals

Modern annual floral and faunal production in the northwest Arabian Sea derives primarily from upwelling induced by strong southwest winds during June, July, and August. Indian Ocean summer monsoon winds are, in turn, driven by differential heating between the Asian continent and the Indian ocean to the south. This differential heating produces a strong pressure gradient resulting in southwest monsoon winds and both coastal and divergent upwelling off the Arabian Peninsula. Over geologic time scales (10(exp 4) to 10(exp 6) years), monsoon wind strength is sensitive to changes in boundary conditions which influence this pressure gradient. Important boundary conditions include the seasonal distribution of solar radiation, global ice volume, Indian Ocean sea surface temperature, and the elevation and albedo of the Asian continent. To the extent that these factors influence monsoon wind strength, they also influence upwelling and productivity. In addition, however, productivity associated with upwelling can be decoupled from the strength of the summer monsoon winds via ocean mechanisms which serve to inhibit or enhance the nutrient supply in the intermediate waters of the Indian Ocean, the source for upwelled waters in the Arabian Sea. To differentiate productivity associated with wind-induced upwelling from that associated with other components of the system such as nutrient sequestering in glacial-age deep waters, we employ a strategy which monitors independent components of the oceanic and atmospheric subsystems. Using sediment records from the Owen Ridge, northwest Arabian Sea, we monitor the strength of upwelling and productivity using two independent indicators, percent G. bulloides and opal accumulation. We monitor the strength of southwest monsoon winds by measuring the grain-size of lithogenic dust particles blown into the Arabian Sea from the surrounding deserts of the Somali and Arabian Peninsulas. Our current hypothesis is that the variability associated with the 41 kyr power in the G. bulloides and opal accumulation records derive from nutrient availability in the intermediate waters which are upwelled via monsoon winds. This hypothesis is testable by comparison with Cd records of intermediate and deep waters of the Atlantic and Indian Ocean

WIC AND THE RETAIL PRICE OF INFANT FORMULA

Rebates from infant formula manufacturers to State agencies that administer the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) support over one-quarter of all WIC participants. However, concerns have been raised that WIC and its infant formula rebate program may significantly affect the infant formula prices faced by non-WIC consumers. This report presents findings from the most comprehensive national study of infant formula prices at the retail level. For a given set of wholesale prices, WIC and its infant formula rebate program resulted in modest increases in the supermarket price of infant formula, especially in States with a high percentage of WIC formula-fed infants. However, lower priced infant formulas are available to non-WIC consumers in most areas of the country, and the number of these lower priced alternatives is increasing over time.WIC program, infant formula, cost-containment, rebates, food package costs, Special Supplemental Nutrition Program for Women, Infants, and Children, child nutrition, food assistance, Food Security and Poverty,

Uncovering the spatially distant feedback loops of global trade: A network and input-output approach

Land-use change is increasingly driven by global trade. The term “telecoupling” has been gaining ground as a means to describe how human actions in one part of the world can have spatially distant impacts on land and land-use in another. These interactions can, over time, create both direct and spatially distant feedback loops, in which human activity and land use mutually impact one another over great expanses. In this paper, we develop an analytical framework to clarify spatially distant feedbacks in the case of land use and global trade. We use an innovative mix of multi-regional input-output (MRIO) analysis and stochastic actor-oriented models (SAOMs) for analyzing the co-evolution of changes in trade network patterns with those of land use, as embodied in trade. Our results indicate that the formation of trade ties and changes in embodied land use mutually impact one another, and further, that these changes are linked to disparities in countries' wealth. Through identifying this feedback loop, our results support ongoing discussions about the unequal trade patterns between rich and poor countries that result in uneven distributions of negative environmental impacts. Finally, evidence for this feedback loop is present even when controlling for a number of underlying mechanisms, such as countries' land endowments, their geographical distance from one another, and a number of endogenous network tendencies

The Effectiveness of Learning Geography Using Computer-based Games

Eighty, seventh grade students attending a suburban middle school in southern Connecticut participated in the study evaluating the effectiveness of computer based geography games on student motivation and achievement. Using Connecticut Mastery Test (CMT) Scores and baseline U.S.A scores as criteria to develop matched pairs, students were divided so that the control group played Sheppardsoftware.com’s States Level 3 and the experimental group played States Level 6. According to the data collected, States Level 3 and States Level 6 are significantly effective instructional tools that students enjoyed playing. CMT scores in spatial reasoning did not prove strong predictors of students’ performance whereas U.S.A. baseline testing was a strong indicator in two of three categories. Results support the use of computer-based games to increase student motivation and social studies achievement