منابع مشابه
Data-collection strategies.
The optimal strategy for collecting X-ray diffraction data from macromolecular crystals is discussed. Two kinds of factors influencing the completeness of data are considered. The first are geometric, arising from the symmetry of the reciprocal lattice and from the experimental setup; they affect quantitatively the completeness of the measured set of reflections. The second concern the quality,...
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This article provides an innovative meta-framework comprising strategies designed to guide qualitative data collection in the 21st century. We present a meta-framework comprising strategies for collecting data from interviews, focus groups, observations, and documents/material culture. We present a template for collecting nonverbal data during interviews and discuss the concept of debriefing th...
متن کاملA quantitative approach to data-collection strategies.
Statistical descriptors of the X-ray diffraction data set for a macromolecular crystal can be modelled using the information present in the initial diffraction images. Quantitative relationships between the crystal quality, beam apertures, oscillation width, resolution limit, redundancy and the data statistics are presented. They are analysed in terms of the radiation-dose requirements based on...
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In this essay I summarize what I see as the most important academic and policy issues related to the study of consumption behavior in the US (and elsewhere). I discuss the type of data researchers working on these topics have available, the problems they encounter, and how the “big data revolution” is rapidly changing access and availability of data on household spending. Finally, I discuss the...
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We pursue two strategies for offline data collection for a temporal question answering system that uses both quantitative methods and fuzzy methods to reason about time and events. The first strategy extracts event descriptions from the structured year entries in the online encyclopedia Wikipedia, yielding clean quantitative temporal information about a range of events. The second strategy mine...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section D Biological Crystallography
سال: 1999
ISSN: 0907-4449
DOI: 10.1107/s0907444999008367