Twenty years of progress: GIScience in 2010

Twenty years of progress: GIScience in 2010

It is 20 years since the term “geographic information science” was suggested to encompass the set of fundamental research issues that surround GIS. Two decades of GIScience have produced a range of accomplishments, in an expanding literature of research results as well as in the infrastructure of research. Several themes are suggested for future research, based both on gaps in what has been acc...

Twenty-five years of progress.

Twenty years of progress. . . an editorial.

a t the end of World War II the Veterans Administration faced a chaotic situation in prosthetic and sensory aids. The problems of the amputees were particularly acute. Thousands of servicemen were being discharged rapidly, fitted and trained in military and naval amputation centers with serviceable but supposedly " temporary " artificial limbs. The amputees were referred for " permanent " limbs...

Twenty years of progress in the study of trauma.

In this article, the authors argue that studies investigating the nature of traumatic memory have made the greatest contribution to trauma research in the past 20 years. Neuroimaging studies provide empirical support for the diagnosis of posttraumatic stress disorder and have important implications for the treatment of trauma survivors. In the future, the authors hope to see an empirically deri...

Twenty-five years of progress in bilirubin metabolism (1952-77).

This review deals with the development of our understanding of the chemistry of bilirubin and its glucuronide derivatives during the years 1952-1977. It examines the relation between haem metabolism and bilirubin formation and our present knowledge of hepatic transport of bilirubin. The heterogeneity of familial hyperbilirubinaemia is discussed.