An experimental approach to karmarkar’s projective method for linear programming

Author(s):  
J. A. Tomlin
1989 ◽  
Vol 16 (1) ◽  
pp. 189-206 ◽  
Author(s):  
Mahesh H. Dodani ◽  
A.J.G. Babu

1985 ◽  
Author(s):  
P. E. Gill ◽  
W. Murray ◽  
M. A. Saunders ◽  
J. A. Tomlin ◽  
M. H. Wright

1986 ◽  
Vol 36 (2) ◽  
pp. 183-209 ◽  
Author(s):  
Philip E. Gill ◽  
Walter Murray ◽  
Michael A. Saunders ◽  
J. A. Tomlin ◽  
Margaret H. Wright

1987 ◽  
Vol 13 (1-4) ◽  
pp. 285-289
Author(s):  
Mahesh H. Dodani ◽  
A.J.G. Babu

Algorithmica ◽  
1986 ◽  
Vol 1 (1-4) ◽  
pp. 517-527 ◽  
Author(s):  
G. Rinaldi

Author(s):  
Mircea Fotino

The use of thick specimens (0.5 μm to 5.0 μm or more) is one of the most resourceful applications of high-voltage electron microscopy in biological research. However, the energy loss experienced by the electron beam in the specimen results in chromatic aberration and thus in a deterioration of the effective resolving power. This sets a limit to the maximum usable specimen thickness when investigating structures requiring a certain resolution level.An experimental approach is here described in which the deterioration of the resolving power as a function of specimen thickness is determined. In a manner similar to the Rayleigh criterion in which two image points are considered resolved at the resolution limit when their profiles overlap such that the minimum of one coincides with the maximum of the other, the resolution attainable in thick sections can be measured by the distance from minimum to maximum (or, equivalently, from 10% to 90% maximum) of the broadened profile of a well-defined step-like object placed on the specimen.


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