At the time of an initial public offering, shares in a firm are typically held by venture capitalists, insiders, corporate investors, and angel investors. We examine the role of angel investors in the IPO process. We find that angel investors provide equity capital in industries that venture capitalists are less likely to serve and that shareholders in angel backed IPO firms are more likely to ...

We solve Conway’s Angel Problem by showing that the Angel of power 2 has a winning strategy. An old observation of Conway is that we may suppose without loss of generality that the Angel never jumps to a square where he could have already landed at a previous time. We turn this observation around and prove that we may suppose without loss of generality that the Devil never eats a square where t...

Department of Geography, Miami University, Oxford, OH 45056 ([email protected]). Abstract Remote sensing techniques have been widely used to map fire scars in the western United States, but have not been thoroughly tested in the eastern portion of the country. In this study, a 1998 Landsat Thematic Mapper (TM) image and a 1999 Enhanced Thematic Mapper (ETM1) image were used to test different i...

Lunar impact melt deposits have unusual surface properties, unlike any measured terrestrial lava flow. Radar observations suggest that they are incredibly rough at decimeter scales, but appear smooth in high-resolution, meter-scale optical images. The cause of their roughness is unknown. In this work, we investigate the properties from seven lunar craters, ranging size 7.5 to 96 km diameter, an...

T h e effect of variable tree canopy cover, shadows, and topography on Thematic Mapper (TM) data was examined for blue oak (Quercus douglasii) woodland and wooded grassland on rugged terrain in central California. Thematic Mapper data were analyzed from September 1986 (trees in leaf, grass understory senescent) and December 1984 (trees leafless, grasses emerging. Tree cover measured in 84 60 m ...

Ontologies are fundamental tools used with different purposes and with different modalities in different areas and communities. To guarantee the right level of quality, the most widely used ontologies are man-made. However, developing and maintaining them turns out to be extremely time-consuming. For this reason, there are approaches aiming at their automatic construction where ontologies are i...

Humans can fairly easily identify roads in remote sensing images, but this has turned out to be a difficult task for computers. Most previous work in this area has utilized statistical and rule-based techniques, which depended primarily upon spectral information. However, it appears that spectral information alone is insufficient to identify roads in Landsat Thematic Mapper satellite imagery, s...

One of the objectives of precision agriculture is rapid location of fields information to reduce the investment and improve the environment. Based on near infrared (NIR) hyperspectral images, this paper outlines an approach using hyperspectral imaging technology, combining spectral analysis methods and supervised classification methods for the extraction and analysis of farmland objects. This p...