The Directorate of Economics of the Ministry of Agriculture maintains two publication series for research on food security issues. Publications under the Flash series are short (3-4 pages), carefully focused reports designated to provide timely research results on issues of great interest. Publications under the Research Paper series are designed to provide longer, more in-depth treatment of fo...

The purpose of this literature review is to identify and address major themes in the distance education literature, particularly as they relate to interactive television (ITV) and student satisfaction. Major themes include satisfaction based on site-type, previous research biases, faculty-student interaction, characteristics of satisfied learners, qualitative differences in satisfaction, satisf...

Franklin Delano Roosevelt’s court-packing plan of 1937 and the “switch in time that saved nine” animate central questions of law, politics, and history. Did Supreme Court Justice Roberts abruptly switch votes in 1937 to avert a showdown with Roosevelt? Scholars disagree vigorously about whether Roberts’s transformation was gradual and anticipated or abrupt and unexpected. Using newly collected ...

AnaplasmamarginaleTheiler is a tick-bornepathogen that causes anaplasmosis incattle. There are 20 tick species worldwide that are implicated as vectors of this pathogen. In the United States, Dermacentor andersoni Stiles and Dermacentor variabilis (Say) are the principal vectors. The risk of transmission of anaplasmosis to cattle has been largely based on the distribution ofD. andersoni in the ...

This paper presents a revision of the species Eulasia genei Truqui, 1848. A total of 773 specimens, including all type series of the involved taxa, were examined. Nominal species currently in synonymy with E. genei are discussed. All the current synonyms proved to be wrongly attributed, and the following new synonyms are proposed: Eulasia pretiosa Truqui, 1848 = E. genei chaifensis (Reitter, 18...

Three-dimensional geometric constraint solving is a rapidly developing eld, with applications in areas such as kinematics, molecular modeling, surveying, and geometric theorem proving. While two-dimensional constraint solving has been studied extensively, there remain many open questions in the arena of three-dimensional problems. In this paper, we continue the development of our previous work ...