DISCUSSION: ISSUES IN AGRICULTURAL LAND MARKETS: AN EMPIRICAL PERSPECTIVE

Land Economics/Use,

Performance capability of laser-powered launch vehicles using vertical ascent trajectories

The use of a ground-based high-power laser source to power a vertically launched rocket vehicle is investigated. By using a vertical ascent trajectory, only a single laser source is required. The vertical ascent mode is not applicable to earth orbit destinations but is applicable to missions beyond earth escape. Performance and trajectory characteristics are examined for vertical trajectories to earth escape and solar escape (which may be of interest in the future for radioactive waste disposal). Specific impulse values from 2000 to 5000 seconds are considered. With these values, a single-stage vehicle can deliver payloads to earth escape and beyond, but extremely high power sources (gigawatts) are required

Cromwell's Edinburgh press and the development of print culture in Scotland

Alasdair Mann, the noted scholar of book culture in early modern Scotland, has suggested that a significant change had occurred in Scotland's relationship with the printed word by the late seventeenth century. This study sets out to explain how the interregnum served as a ‘watershed’ during which a consumer demand was created for popular print and how this in turn necessitated a significant increase in the production and distribution of printed material. Beginning with the sale of the press and patent of Evan Tyler to the London Stationers’ Company in 1647, the article charts the key factors that transformed Scotland's printing industry from the production of official declarations and works for foreign markets to the production of polemical texts for a Scottish audience. These developments also witnessed publication of the first serial news journal and the growth of a competitive market for up-to-date printed news. More than just an anomaly that flourished during a decade of occupation, these fundamental changes altered Scotland by introducing the large-scale consumption of chapbooks and printed ephemera, thereby initiating the nation's enduring print culture

Payload optimization of multistage launch vehicles

Payload optimization of multistage launch vehicle- generalized Bolza problem for maximal payload capability analysi

sBOOM Propagation for the Third AIAA Sonic Boom Prediction Workshop

No abstract availabl

Quenching and extinguishment of burning solids in oxygen-enriched atmospheres Final report

Quenching distances for flaming thin polymer films, and fire extinguisher using inert gas to reduce fire hazards in spacecraft cabin atmosphere

Minimizing Sonic Boom Through Simulation-Based Design: The X-59 Airplane

One of NASAs six Strategic Thrusts for aeronautics is Innovation in Commercial Supersonic Aircraft, with a vision of fast air travel widely available to the traveling public. Future supersonic aircraft will be efficient, affordable, and environmentally responsible, generating an acceptable level of en-route noise (sonic booms). The first major step is the ongoing construction of the new X-59 Quiet SuperSonic Technology X-plane to demonstrate technologies that reduce sonic booms to gentle thumps. By using highresolution Cart3D computational fluid dynamics simulations, the shape of the aircraft can be designed to control the non-linear interactions of shock waves to reduce the sonic boom noise on the ground to within outdoor ambient levels, thereby enabling supersonic overland flight

Investigation of flame front phenomena - Effects of impressed acoustical fields Final report

Phenomena of impressed acoustical fields upon flame propagation rate

ANALYSIS OF VARIATIONS IN FARM REAL ESTATE PRICES OVER HOMOGENEOUS MARKET AREAS IN THE SOUTHEAST

Land Economics/Use,