INTRODUCTION T HE INCREASING DEMAND for digital data in computerized geographic information systems has led to the introduction of systems for automatic data capture. Commonly known as raster scanning systems, these systems make use of optical scanners as the primary mode of input. Instead of manually digitizing the data sources, the original map document… (More)
FOREWORD The Assets and Education Initiative (AEDI) is an office at the University of Kansas's School of Social Welfare (http://aedi.ku.edu/). AEDI's mission is to create and study innovations related to assets and economic well-being, with a focus on the relationship between children's savings and the educational outcomes of low-income and minority… (More)
M~ract-The structure of the reachability problem for (O,l)-capaci-tated marked graphs is studied. A purely graph-theoretic characterization of this problem is presented.