Choice of speed under compromised Dynamic Message Signs.

This study explores speed choice behavior of travelers under realistic and fabricated Dynamic Message Signs (DMS) content. Using web-based survey information of 4,302 participants collected by Amazon Mechanical Turk in the United States, we develop a set of multivariate latent-based ordered probit models participants. Results show female, African-Americans, drivers with a disability, elderly, and drivers who trust DMS are likely to comply with the fabricated messages. Drivers who comply with traffic regulations, have a good driving record, and live in rural areas, as well as female drivers are likely to slow down under fabricated messages. We highlight that calling or texting, taking picture, and tuning the radio are distracting activities leading drivers to slow down or stop under fictitious scenarios

Effect of Zinc Chelate Foliar Application on Yield and Yield Components of Four Wheat Cultivars

Application of microelements is one of the ways to increase quantative and qualitative characters of wheat. To evaluate the effect of zinc foliar application on yield and yield components of four wheat cultivars a factorial experiment with two factors was conducted in randomized complete blocks design with three replications in 2011-2012 year. The first factor consisted of four wheat cultivars (Falat, Bahar, Pishtaz and Tous) and the second factor composed of three levels of zinc chelate foliar applications (control, at shooting stage and at shooting + flowering stages). Zinc concentration in each application was decided to be 4 kilogram per hectare. Results showed that yield and yield components of cultivars were significantly different with each others. The highest and lowest yields were belonged to Bahar and Tous respectively. The highest yield of Bahar, as compared to the other cultivars, was due to its higher biological yield. Zinc foliar applications at shooting and shooting + flowering stages also increased biological and seed yields. Seed yield increase mainly affected by higher 1000 seed weight. In general, it seems that zinc application, due to its role in the physiology of wheat, a sensitive plant to zinc deficiency, may increase its seed yield

Effect of Copper Chelate Foliar Application on Yield and Yield Components of Four Barley (Hordeum vulgare) Cultivar

To evaluate the effect of foliar application of copper on yield and yield components of four barley cultivar a factorial experiments with two factors was conducted in randomized complete block design with three replications in 2011 - 2012. The first factor was four barley cultivars (Fisasih, Yousof, Reyhan and Cb17) and the second factor consisted of foliar application of copper chelate in three levels (non, one time at booting stage and two times at both booting and heading stages). Results showed that there were differences among number of fertile tillers, number of seed per spike and seed weight of cultivars. Although yields of cultivars did not differ significantly, one or two times of foliar applications of copper increased biological and seed yield. Seed yield increased mainly as a result of increase in thousand seed weight, number of fertile tillers per unit area and the number of seeds per spike. Mean while harvest index was not affected by foliar application. In general, it seems due to essential of elemental copper on plant physiology, particularly in a copper sensitive plant like barley application of copper-containing compounds may enhance plant growth