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 Results for DC.creator="J." AND DC.creator="Zhang" in section 15.3.5 of volume F
Code description
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5, pp. 410-412 [ doi:10.1107/97809553602060000849 ]
... s equation calculation adds another level of complexity, described in Zhang & Main (1990b). Skeletonization imposes the protein histogram and solvent ... from 6 to 1.5, according to the method described by Zhang & Main (1990a). The histogram variances should be consistent with ... Rossmann, M. G., McKenna, R., Tong, L., Xia, D., Dai, J.-B., Wu, H., Choi, H.-K. & Lynch, R. E. ( ...

Averaging
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.6, pp. 411-412 [ doi:10.1107/97809553602060000849 ]
... Rossmann, M. G., McKenna, R., Tong, L., Xia, D., Dai, J.-B., Wu, H., Choi, H.-K. & Lynch, R. E. (1992). Molecular replacement real-space averaging. J. Appl. Cryst. 25, 166-180. International Tables for Crystallography (2012 ...

Histogram matching
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.5, p. 411 [ doi:10.1107/97809553602060000849 ]
... from 6 to 1.5, according to the method described by Zhang & Main (1990a). The histogram variances should be consistent with ... target histograms on either side of the current resolution. References Zhang, K. Y. J. & Main, P. (1990a). Histogram matching as a new ...

Fourier transforms
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.4, p. 411 [ doi:10.1107/97809553602060000849 ]
Fourier transforms 15.3.5.4. Fourier transforms For simplicity of coding, all Fourier transforms are performed in core using real-to-Hermitian and Hermitian-to-real fast Fourier transforms (FFTs). The data are expanded to space group P1 before calculating a map and averaged back to a reciprocal asymmetric unit after inverse ...

Averaging-mask determination
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.3, p. 411 [ doi:10.1107/97809553602060000849 ]
... D54, 487-493. Vellieux, F. M. D. A. P., Hunt, J. F., Roy, S. & Read, R. J. (1995). DEMON/ANGEL: a suite of programs to carry out density modification. J. Appl. Cryst. 28, 347-351. International Tables for Crystallography ( ...

Solvent-mask determination
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.2, p. 411 [ doi:10.1107/97809553602060000849 ]
Solvent-mask determination 15.3.5.2. Solvent-mask determination If the user does not supply a solvent mask, the solvent mask is calculated by Wang's (1985) method, using the reciprocal-space approach of Leslie (1987). A number of variants on this algorithm are implemented; however, the parameter that affects the quality ...

Scaling
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.1, pp. 410-411 [ doi:10.1107/97809553602060000849 ]
Scaling 15.3.5.1. Scaling All forms of map modification are affected by the overall temperature factor of the data, and histogram matching in particular is critically dependent on the accurate determination of the scale factor. Wilson statistics have been found inadequate for scaling in this case, especially when the data resolution is ...

Multi-crystal averaging
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.7, p. 412 [ doi:10.1107/97809553602060000849 ]
Multi-crystal averaging 15.3.5.7. Multi-crystal averaging The multi-crystal averaging calculation in DMMULTI is equivalent to several single-crystal averaging calculations running simultaneously, with the exception that during the averaging step, the molecule density is averaged across every copy in every crystal form. This average is weighted by the mean ...

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