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We search 0.02 deg 2 of the invariable plane for trans-Neptunian objects (TNOs) 25 AU or more distant using the Advanced Camera for Surveys (ACS) aboard the Hubble Space Telescope. With 22 ks per pointing, the search is more than 50% complete for m 606W 29:2. Three new objects are discovered, the faintest with mean magnitude m ¼ 28:3 (diameter %25 km),(More)
The recent success of vector computers such as the Cray-1 and array processors such as those manufactured by Floating Point Systems has increased interest in making vector operations available to the FORTRAN programmer. The FORTRAN standards committee is currently considering a successor to FORTRAN 77, usually called FORTRAN 8x, that will permit the(More)
An algorithm for transforming sequential programs into equivalent parallel programs is presented. The method concentrates on finding loops whose separate iterations can be run in parallel without synchronization. Although a simple version of the method can be shown to be optimal, the problem of generating optimal code when loop interchange is employed is(More)
Practical implementations of real languages are often an excellent way of testing the applicability of theoretical principles. Many stresses and strains arise from fitting practicalities, such as performance and standard compatibility, to theoretical models and methods. These stresses and strains are valuable sources of new research and insight, as well as(More)
We have previously reported [1] the isolation of a maize pollen-specific cDNA, 3C12, which exhibits homology in its predicted amino acid sequence to polygalacturonases of various species [2, 3, 4, 5]. We have used a 300 bp fragment from the 5' end of this clone to isolate the corresponding genomic clones from maize libraries made by partial Sau 3A digests(More)
The population of the Kuiper Belt within 50 AU of the Sun has likely been severely depleted by grav-itational perturbations from the giant planets, particularly Neptune. The density of Kuiper Belt objects is expected to be two orders of magnitude higher just beyond 50 AU, where planetary perturbations are insigniicant. In 1998 and 1999, we surveyed for(More)