-Generic Computability, Turing Reducibility and Asymptotic Density

Generic computability has been studied in group theory and we now study it in the context of classical computability theory. A set A of natural numbers is generically computable if there is a partial computable function f whose domain has density 1 and which agrees with the characteristic function of A on its domain. A set A is coarsely computable if there is a computable set C such that the symmetric difference of A and C has density 0. We prove that there is a c.e. set which is generically computable but not coarsely computable and vice versa. We show that every nonzero Turing degree contains a set which is not coarsely computable. We prove that there is a c.e. set of density 1 which has no computable subset of density 1. As a corollary, there is a generically computable set A such that no generic algorithm for A has computable domain. We define a general notion of generic reducibility in the spirt of Turing reducibility and show that there is a natural order-preserving embedding of the Turing degrees into the generic degrees which is not surjective

THE EFFECTIVENESS OF STATE LOGOS FOR FARM-RAISED CATFISH

Product differentiation can consist of identifying the corporate firm that produces the product (such as Kraft) or the producer cooperative that produces the product (such as Ocean Spray). The Catfish Institute (funded by producers, feed mills and processors) was created to promote the generic sales of farm-raised catfish. Also, a number of Mississippi catfish processors are differentiating their product by promoting it as Mississippi Farm-Raised Catfish. Louisiana farm-raised catfish are highly comparable in breeding, feeding and processing to catfish marketed as Mississippi Farm-Raised Catfish. Use of a state logo is based o the premise that loyalties tend to encourage food consumers to patronize local producers. Louisiana State University Agricultural Center researchers surveyed a sample of 5,000 households in three major Louisiana cities (New Orleans, Lafayette and Shreveport) in early 1992 to estimate their willingness to purchase a product classified as "Louisiana Farm-Raised Catfish," given the instate availability of catfish with the Mississippi Farm-Raised Catfish logo. The larger the percentage of Louisiana households willing to buy Louisiana Farm-Raised Catfish at higher or equal prices to Mississippi Farm-Raised Catfish, the more effective the proposed Louisiana logo and the stronger the premise that state loyalties exist and are effective. The survey data, which indicate that the proposed "Louisiana Farm-Raised Catfish" would be popular with many Louisiana consumers, were analyzed with respect to location (city) and socio-economic characteristics of the households using Logit analysis. As firms and states develop new nontraditional agricultural products, these results indicate that a state logo has the potential to be effectively used in promoting these new products.Agribusiness,

A CROSS SECTIONAL ANALYSIS OF CONSUMER TRENDS IN RED MEAT CONSUMPTION

Food consumption patterns have received considerable attention lately, especially changes in red meat consumption. This article examines and analyzes changes in meat consumption patterns in a southern state. Differences are reported based on demographics and consumer expressed preferences. The results reaffirm the negative role of health concerns and fat on red meat consumption and the positive influence on poultry and seafood. The findings agree with related other studies and suggest that further research into the changing meat consumption patterns is warranted.Food Consumption/Nutrition/Food Safety,

BOILED CRAWFISH CONSUMPTION IN LOUISIANA

Food Consumption/Nutrition/Food Safety,

DETERMINANTS OF PARTICIPATION AND CONSUMPTION: THE CASE OF CRAWFISH IN SOUTH LOUISIANA

This study investigates the determinants of crawfish consumption in South Louisiana using a generalized limited dependent variable model that accounts for both participation and consumption decisions. Income, Catholic, white, and household size increase the likelihood of crawfish consumption but not the conditional level of consumption. Education and employment status are among the other household characteristics that determine the conditional level of consumption.Box-Cox transformation, Crawfish consumption, Double-hurdle model, South Louisiana, Food Consumption/Nutrition/Food Safety,

CONSUMER USE OF NUTRITION LABELS ON PACKAGED MEATS

Consumer perceptions of the importance of nutritional labeling of fresh meats and knowledge of nutritional terms have been presented in the Journal of Food Distribution Research (Piedra, et al 1995). This article presents follow up information on consumer reported uses of nutritional labels on packaged meats and the specific nutrients that the consumers check for on packaged meats. The results indicate that consumers use nutrition labels to check for desirable dietary components and to compare nutrient content among meats as well as to check for the presence of undesirable dietary components in packaged meats.Consumer/Household Economics,

HOUSEHOLD PERCEPTIONS OF THE NUTRITIONAL LABELING OF MEATS

Previous research on the relationship between diet and health has increased consumer interest in the nutritional content of specific foods. Federal programs, such as the Dietary Guidelines for Americans and The Food Pyramid, have had similar impacts. A 1994 mail survey of 3,080 Louisiana households in eight rural and urban parishes examined consumer awareness of the nutritional labeling of fresh meats and its importance. Rural respondents placed more emphasis on nutritional labeling than did urban respondents. The respondents also ranked three descriptive terms (lean, extra lean and low fat) for fat content as defined by the USDA. Eighteen percent of households ranked them correctly with white households displaying better ranking capability. These results tend to justify an earlier decision by Congress to implement legislation covering the nutritional labeling of fresh meats.Consumer/Household Economics,