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You ca n't add any information to the invoice other than what is in the fields , and you have only very limited flexibility in how those fields are presented . These include , but are not limited to , racing a motorcycle over an obstacle course , a shooting gallery where you have to knock off ducks and wolves of various types ( but not the technician ) , a hide-and-seek game where you have to locate friendly and other animals in the fields , a space war game where you have to shoot down your constantly moving opponent , and a mine-sweeping game . Support active communication , networking and collaboration among the group of graduate students , their mentors and other prominent researchers in the field , both during their graduate training , as well as into the early stages of their research careers . The MPSA publishes one of the top journals in the field , the American Journal of Political Science www.ajps.org , and hosts a large research conference with over 460 panels and 2,600 presenters . Most of the profs I know ( my husband and I both work at a college ) work pretty hard in the summer - - collecting data in the field , writing papers , supervising undergrads doing research . " He has been involved with some of the most important projects in the field , focusing most closely on the nature of political discourse during presidential campaigns . We have referred already to the ancient Indian practice that Indian peasants would pursue their work in the fields , in the face of invading armies , confident of the protection afforded them by the tradition that war was a matter for the combatants112 . One myth that Southern slave owners and proponents were happy to perpetuate was that of the slave happily singing from dawn to dusk as he worked in the fields , prepared meals in the kitchen , or maintained the upkeep of the plantation .