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The role of telerobotics for space exploration in placing human cognition on other worlds is limited almost entirely by the speed of light, and the consequent communications latency that results from large distances. This latency is the time delay between the human brain at one end, and the telerobotic effector and sensor at the other end. While(More)
Concepts for a long-duration habitat at Earth-Moon L1 or L2 have been advanced for a number of purposes. We propose here that such a facility could also have an important role for low-latency telerobotic control of lunar surface equipment, both for lunar science and development. With distances of about 60,000 km from the lunar surface, such sites offer(More)
In this paper we have explored the linked series of structures that collectively comprise the respiratory system. In examining each of these structural resistors, some seem to be primarily fixed, for example, the trachea, while others must be primarily variable or adaptable, for example, the cardiovascular system. Those structures that are truly variable(More)
All skeletal muscle can produce roughly the same maximal cross-sectional force; however, the power (energy X time-1) required to develop and maintain that force increases with increasing contraction velocity. Thus the rate of muscle tension development may be of primary importance in setting the energy demand of contracting muscle. We have estimated the(More)
For four centuries new technology and telescopes of increasing diameter have driven astronomical discovery for the simple reason that astronomy is a photon-limited field. The Hubble Space Telescope (HST), to date the largest UV/optical astronomical space telescope, has demonstrated the breadth of fundamental astrophysics that can be extracted from(More)
Four IRAS-detected early type galaxies were observed with the Infrared Space Observatory. With the exception of the 15 µm image of NGC 1052, the mid-IR emission from NGC 1052, NGC 1155, NGC 5866 and NGC 6958 at 4.5, 7 and 15 µm show extended emission. Mid-IR emission from NGC 1052, NGC 1155, and NGC 6958 follows a de Vaucouleurs profile. The ratio of 15/7(More)
We use the ISOPHOT 60 mimage of Tuus et al. (1996) to study the 60 mlight distribution and its correlation with radio continuum within the disk of spiral galaxy NGC 6946, and to resolve the long-standing IRAS controversy as to whether the infrared-to-radio continuum ratio, Q, decreases radially out in galaxy disks. Our main results are: (1) The disk at 60(More)
The deeciency of CII] (158 m) line emission in many normal and ultraluminous galaxies is one of the major surprises from ISO-LWS observations. We show that this is not an isolated phenomenon: there is a smooth decline in L CII] =L FIR ratio with increasing dust temperature (as indicated by far-infrared colors F (60m)=F (100m)) and star-formation activity(More)