40,411 research outputs found

    Consumer Perception of Organic Food in Urumqi

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    The market for organic products in Urumqi is at the beginning of its development. The objective of this paper is to gain knowledge about consumers attitudes toward organic food in Urumqi which is the capital of Xinjiang Uygur Autonomous Region. The consumers attitudes were collected by means of a face-to-face survey. Attitudes, purchasing frequency, supply satisfaction and beliefs about organic food were studied with a sample of 720 consumers. The data obtained from the survey were analyzed with univariate analysis, chi-square test, ANOVA and correlation analysis. About 44.9% of Urumqi consumers had never heard of organic food. Urumqi consumers who know organic food consider organically-grown products as very healthy, of good quality and tasty. Consumers are not very familiar with the supply of organic food in the market. One reason might be that there was very little advertisement about organic products. Some groups of consumers have more positive attitudes towards organic food, and they express an increased willingness to pay higher prices for these food. Therefore, marketing strategies for organic food should be targeted towards such groups. According to the research results, an important task for the producers will be to increase consumers knowledge of what organic food is and how to differentiate it in the marketplace.Urumqi, Consumer behavior, Organic food, Food Consumption/Nutrition/Food Safety,

    Systems of interacting diffusions with partial annihilation through membranes

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    We introduce an interacting particle system in which two families of reflected diffusions interact in a singular manner near a deterministic interface II. This system can be used to model the transport of positive and negative charges in a solar cell or the population dynamics of two segregated species under competition. A related interacting random walk model with discrete state spaces has recently been introduced and studied in Chen and Fan (2014). In this paper, we establish the functional law of large numbers for this new system, thereby extending the hydrodynamic limit in Chen and Fan (2014) to reflected diffusions in domains with mixed-type boundary conditions, which include absorption (harvest of electric charges). We employ a new and direct approach that avoids going through the delicate BBGKY hierarchy.Comment: Published at http://dx.doi.org/10.1214/15-AOP1047 in the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org