Space Resource America Corporation is engaged in developing new concepts for communications satellite systems that will avoid interference with any of the Geostationary satellites and can provide a significant increase in global capacity compared with that of the GEO ring. Additionally, since all satellites in such a system are flying in formation, they will not interfere with each other. The c...

Reliable global estimates of forest biomass and its dynamics are critically important for understanding the global carbon cycle and its dynamics (e.g., Bellassen et al. 2011). Many studies have been published regarding the estimation of above-ground biomass using airborne or satellite analog lidar systems (e.g., Nelson et al. 1988; Naesset 2002; Drake et al. 2003; Popescu et al. 2003; Lim and T...

Domain. Human Computer Interaction Series. Whole Body Interaction, pp. 7–18. Springer. Bakker, S., van den Hoven, E. and Antle, A.N. (2011) MoSo Tangibles: Embodied Metaphors in a Tangible System for Learning: A User Evaluation. TEI 2011, Funchal, Portugal. ACM Press. Bastick, T. (1982) Intuition: How We Think and Act. Chichester, Toronto.Blackler, A., Popovic, V. and Mahar, D. (2002) Intui...

Supplementary feeding stations, or "vulture restaurants", are common conservation management tools. While a number of studies have investigated the consequences of surplus food on the population dynamics of scavengers, relatively little is known about the effects of such practices at the individual level. Within the long-term monitored breeding population of Canarian Egyptian vultures (Neophron...

This paper addresses the development work of ground receiving system for the Korea Multi-Purpose Satellite-2 (KOMPSAT-2), which is to be launched in 2004 by the Korean Government. KOMPSAT-2 is a new high-resolution earth observation satellite that is capable of 1m panchromatic and 4m multi-spectral imaging. The development is in its final year, and final system is expected by the end of October...

The design of satellites and their operation is a complex task that involves a large number of variables and multiple engineering disciplines. Thus, it could benefit from the application of multidisciplinary design optimization, but previous efforts have been hindered by the complexity of the modeling and implementation, discontinuities in the design space, and the wide range of time-scales. We...

The global positioning system (GPS) allows properly equipped users to determine their position based on the measured pseudoranges to at least four satellites. Differential GPS operation (DGPS) uses a reference station at a known location to calculate and broadcast pseudorange corrections to local users, resulting in improved user position accuracy. DGPS accuracy is limited by the ability of the...

Although satellites provide reliable and repeated measurements on a global basis, particulate matter air quality information can be derived from satellites only when clouds are absent and when surface conditions are favorable. However, ground measurements provide particulate matter information irrespective of cloud cover and surface conditions. Therefore there could be a sampling bias when usin...

Warning of imminent ground shaking due to a large earthquake would be useful to a variety of agencies. This kind of ground-motion prediction is possible in southern California for events with magnitude less than 6, where path effects dominate. The 28 June 1991 Sierra Madre earthquake is presented as a test case for this concept. A single-station inversion of the record from the Pasadena station...