These information sources include remote sensing data and images from satellites and aircraft, databases of measurements (e.g., temperature, wind speed, salinity, and snow depth) from specific geographic locations, complex vector information such as topographic maps, and large amounts of text from a variety of sources. These textual documents range from environmental impact reports on various r...

JEL code: C72 keywords: evolution, mutation rates, mistakes ¤The authors are grateful for helpful comments from one referee and one associate editor of this journal, as well as from Sjaak Hurkens, Jens Josephson, Alexander Matros, Arthur Robson, Maria Saez-Marti and Philippe Solal, and participants at seminars at the London School of Economics, the EEA 1999 congress in Santiago di Compostela, a...

Strut and tie models consist of axial force members which react on one another and on external supports through nodes, i.e. they are trusses. An analysis of a truss problem is normally entered by reducing it to a line diagram of member centrelines representing the lines along which the stress resultants in the members are intended to act. When forces are concentrated in a line diagram the nodes...

A long-standing debate in political economy is whether voters are driven primarily by economic self-interest or by less pecuniary motives such as ethnocentrism. Using newly available data, we reexamine one of the largest partisan shifts in a modern democracy: Southern whites’ exodus from the Democratic Party, concentrated in the 1960s. Combining high-frequency survey data and textual newspaper ...

Amyotrophic Lateral Sclerosis (ALS) is a relatively rare neurodegenerative disorder that causes progressive dysfunction of voluntary muscle groups secondary to motor neurons death. The relentless involvement of all skeletal muscles of the body, characterized by weakness and atrophy to complete paralysis, invariably involves respiratory muscles (particularly the diaphragm) resulting in a failure...

HomePlant DiseaseVol. 105, No. 8First Report of Cucurbit Chlorotic Yellows Virus Infecting Cucumber Plants in Spain PreviousNext DISEASE NOTE OPENOpen Access licenseFirst SpainR. Chynoweth, D. Jimenez, Liberti, Bellon-Dona, A. Carralero-González, Crespo-Sempere, and M. R. Albiach-MartiR. ChynowethBASF, Finca Lo Ruiz S/30593 La Palma, Cartagena, Murcia, SpainSearch for more papers by this author...

The objectives of this study were 1) to compare Sonoran Desert streams with other streams in terms of retention efficiency of nitrate; 2) to examine the effects of a flood on nitrate retention and to determine which factors control nitrate retention in the surface stream subsystem in Sycamore Creek, Arizona; and 3) to compare the short-term nutrient addition technique with computations based up...