Twenty Years after Beijing: Can Promises be Turned into Progress?

Twenty-five years of progress.

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 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...

Can Failure be Turned into Success for Biological Control of Mile-a-Minute Weed (Mikania micrantha)?

Research into biological control of Mikania micrantha Kunth (Asteraceae) started in 1978, concentrating on insect agents. Host specificity studies on the first agent, Liothrips mikaniae (Priesner) (Thysanoptera, Phlaeothripidae) from Trinidad were completed by 1982, and the thrips was released in the Solomon Islands in 1988 and, subsequently in Malaysia in 1990. Neither release led to establish...

Could any Graph be Turned into a Small-World?

In addition to statistical graph properties (diameter, degree, clustering, ...), Kleinberg [7] showed that a small-world can also be seen as a graph in which the routing task can be efficiently and easily done in spite of a lack of global knowledge. More precisely, in a lattice network augmented by extra random edges (but not chosen uniformly), a short path of polylogarithmic expected length ca...