Computer Software, Powder Diffraction, and Science
نویسندگان
چکیده
منابع مشابه
Mathematics, Computer Science, Software Engineering
This paper examines three ideas: First, the traditional relationship between a science, the mathematics it uses and the engineering based on it. Second, the nature of (software) computer science, which may not be a science at all, and its unusual use of mathematics. And finally, the nature of software engineering, its relationship with computer science, and its use of mathematics called ‘formal...
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The boundaries of computer science are defined by what symbolic computation can accomplish. Software Engineering is concerned with effective use of computing technology to support automatic computation on a large scale so as to construct desirable solutions to worthwhile problems. Both focus on what happens within the machine. In contrast, most practical applications of computing support end-us...
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Pinwheel patterns and their higher dimensional generalisations display continuous circular or spherical symmetries in spite of being perfectly ordered. The same symmetries show up in the corresponding diffraction images. Interestingly, they also arise from amorphous systems, and also from regular crystals when investigated by powder diffraction. We present first steps and results towards a gene...
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The early history of computing records the sharing of computer software in source form. The sharing took place between programmers, and users of programs throughout the computing industry. Later software vendors became rather proprietary with software, using copyright, patent and tradesecret law to restrict the use of programs. In the 1980’s, Richard Stallman led a small group of people who wer...
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New techniques have been integrated into EXPO (Altomare et al., 1999), a package devoted to extracting the integrated intensities from an indexed powder diffraction pattern and to solving crystal structures via Direct Methods. An efficient peak-search algorithm and an improved version of the program TREOR90 (Werner et al., 1985) have been introduced in order to offer new tools for a more powerf...
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ژورنال
عنوان ژورنال: Powder Diffraction
سال: 2014
ISSN: 0885-7156,1945-7413
DOI: 10.1017/s0885715614000943