Chung and Ross (SIAM J. Comput., 20, 1991) conjectured that the minimum number m(n; r) of middle-state switches for the symmetric 3-stage Clos network C(n;m(n; r); r) to be rearrangeable in the multirate enviroment is at most 2n 1. This problem is equivalent to a generalized version of the bipartite graph edge coloring problem. The best bounds known so far on this function m(n; r) is 11n=9 m(n;...

The design and speci cation of an extensible class library presents a di cult challenge: because extensibility comes from allowing the user to override parts of the implementation, more of the internal structure must be exposed to the user than in a typical procedure library. This raises issues in both how the library is designed and how its speci cation is written. Speci cation of the CLOS Met...

This paper outlines a system called Arizona, now under development at the U. of Washington. Arizona is intended to be a portable, public-domain collection of tools supporting scientific computing, quantitative graphics, and data analysis, implemented in Common Lisp[31] and CLOS (the Common Lisp Object System)[4]. Although there is substantial implementation of some of the modules described belo...

Observations from the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) onboard Envisat are used to quantifying the vertical distribution of stratospheric nitrogen dioxide (11–41 km) from limb scattering geometry and the tropospheric column from limb–nadir matching. SCIAMACHY is validated with spatially and temporally coincident observations from Optical Spectrog...

Objective Women undergoing IVF cycles should go successfully through multiple points during the procedure (i.e., implantation, clinical pregnancy, no spontaneous abortion and delivery) to achieve live births. On the other there is a need to consider previous reproductive outcomes and as well as the current cycle. In this study, data on multiple cycles and multiple points during the IVF cycle ar...