We describe how long-term solar system orbit integration could be implemented on a parallel computer. The interesting feature of our algorithm is that each processor is assigned not to a planet or a pair of planets but to a time-interval. Thus, the 1st week, 2nd week,: : :, 1000th week of an orbit are computed concurrently. The problem of matching the input to the (n + 1)-st processor with the ...

Recent healthcare legislation, financial pressures, and regulatory oversight have increased the need to create improved mechanisms for performance measurement, quality management tracking, and outcomesbased research. The Anesthesia Quality Institute (AQI) has established the National Anesthesia Clinical Outcomes Registry (NACOR) to support these requirements for a wide-range of customers includ...

Proboscis lateralis is a rare craniofacial malformation. We present a case in a 1-week-old male infant, describe the clinical and imaging findings, and discuss the pertinent embryology. MR and CT proved to be complementary: CT provided anatomic detail in bone, defined the nasal cavity, and aided in determining the relationship of the proboscis and orbit; MR clarified the relationship of the pro...

The aim of the study was to determine chromosome number and nuclear DNA content an endemic plant, V. scamandri, using 14-week-old plants germinated from seed genetic stability based on flow cytometry analyses in callus tissue induced MS medium containing 1 mg/L Kin + 2,4-D 9-week-old propagated plants, developed 2 0.1 2,4-D. In mitotic counts showed scamandri had 2n = 16. Flow cytometric analys...

an algebraic construction for constant dimension subspace codes is called orbit code. it arises as the orbits under the action of a subgroup of the general linear group on subspaces in an ambient space. in particular orbit codes of a singer subgroup of the general linear group has investigated recently. in this paper, we consider the normalizer of a singer subgroup of the general linear group a...

Abstract In this paper, we study the generalized order- Jacobsthal sequences modulo for and the generalized order-k Jacobsthal-Padovan sequence modulo for . Also, we define the generalized order-k Jacobsthal orbit of a k-generator group for and the generalized order-k Jacobsthal-Padovan orbit a k-generator group for . Furthermore, we obtain the lengths of the periods of the generalized order-3 ...

Fragmentation clouds from explosions or collision of payloads and rocket bodies in space pose a threat to objects Earth orbit. Most the fragments are too small be tracked can only accounted for statistically. Here, framework fully statistical treatment fragmentation cloud, its evolution ramifications, without need simplifying assumptions, is presented. The cloud modeled as an uncertainty around...

Linearization of the nonlinear equations and iterative solution is the most well-known scheme in many engineering problems. For geodetic applications of the LEO satellites, e.g. the Earth’s gravity field recovery, one needs to provide an initial guess of the satellite location or the so-called reference orbit. Numerical integration can be utilized for generating the reference orbit if a satelli...

In this paper we investigate the long term asymptotic properties of what might be called the induced horocycle ow on a compact quotient of the Poincar e upper half plane. We nd that this \\ow" exhibits chaotic properties in the sense that, in the long term, the area of the intersection of an open ball propagated forward by the \\ow," with the original ball, tends to what would be expected if th...

As a service to the satellite operator community, the Center for Space Standards & Innovation (CSSI) offers SOCRATES—Satellite Orbital Conjunction Reports Assessing Threatening Encounters in Space. CSSI runs a list of all satellite payloads on orbit against a list of all objects on orbit using the catalog of all unclassified NORAD two-line element sets (TLEs) to look for satellite conjunctions ...