Summarizing topological information from datasets and maps defined on them is a central theme in topological data analysis. Mapper, a tool for such summarization, takes as input both a possibly high dimensional dataset and a map defined on the data, and produces a summary of the data by using a cover of the codomain of the map. This cover, via a pullback operation to the domain, produces a simp...

anthropogenic alterations have affected urban hydrology in india and have generated a wide range of hydrological problems. such alterations include increase in directly-connected impervious cover thus reducing natural groundwater recharge. in the past urban runoff was largely viewed as a nuisance, but within the new paradigm of sustainability, this water is recognized as a potential resource. t...

s of the Talks......................................................18 Abstracts of the Posters...................................................45s of the Posters...................................................45 Participants List............................................................55 Scientific and Social Program of QSCP-XXII...............Back Cover Map of the venue..................

The Globcover initiative comprises the development and demonstration of a service that in first instance produces a Global land cover map for year 2005/2006. Globcover uses MERIS fine resolution (300m) mode data acquired between mid 2005 and mid 2006 and, for maximum user benefit, the thematic legend is compatible with the UN Land Cover Classification System (LCCS). This new product updates and...

Two sources of volunteered geographical information are used to provide reference data on forest to inform the evaluation of the accuracy of the Globcover land cover map for West Africa. Ground based photographs acquired through an internetbased collaborative project were interpreted by a further set of four volunteers to provide reference data on forest. Little agreement was found between a se...