The Effect of Clothing Upon Perceptions of Source Credibility

This study investigated the effect of clothing upon perceptions of credibility. A male an female model were dressed either formally (in a suit) or informally (in casual slacks). Subjects were 399 undergraduatee students from the University of Nebraska at Omaha. Each suject viewed one of four photographs (male dressed formally, male dressed informally, female dressed formally, female dressed informally) and read a narrative accompanying each photograph. The narrative described the situational context, which included high-reputed characteristics (education, managerial occupation, and expertise in the topic of communication) for each model. Subjects completed McCroskey and Jenson\u27s 25 bipolar adjectives to measure five dimensions of credibility (competency, character, sociability, composure and extroversion)

GNSS in Precision Agricultural Operations

Today, there are two Global Navigation Satellite Systems (GNSS) that are fully operational and commercially available to provide all-weather guidance virtually 24 h a day anywhere on the surface of the earth. GNSS are the collection of localization systems that use satellites to know the location of a user receiver in a global (Earth-centered) coordinate system and this has become the positioning system of choice for precision agriculture technologies. At present North American Positioning System known as Navigation by Satellite Timing and Ranging Global Position System (NAVSTAR GPS or simply GPS) and Russian Positioning System known as Globalnaya Navigatsionnaya Sputnikovaya Sistema or Global Navigation Satellite System (GLONASS) both qualify as GNSS. Two other satellite localization systems, Galileo (European Union) and Compass (Chinese), are expected to achieve full global coverage capability by 2020. Detailed information on GNSS technology is plentiful, and there are many books that provide a complete description of these navigation systems [9- 11]. But the focus of this chapter is on the applications of GPS in agricultural operations. These applications include positioning of operating machines, soil sampling, variable rate application and vehicle guidance.Comisión Europea FP7/2007-201