BACKGROUND Disease-specific health status measures are characterized by higher responsiveness than generic measures and may be preferred in clinical trials. However, comparisons of responsiveness between various disease-specific measures have rarely been performed in asthma studies. STUDY OBJECTIVE We investigated and compared the responsiveness of health status scores in asthmatic patients d...

As an advanced process detection technology, electrical impedance tomography (EIT) has widely been paid attention to and studied in the industrial fields. But the EIT techniques are greatly limited to the low spatial resolutions. This problem may result from the incorrect preprocessing of measuring data and lack of general criterion to evaluate different preprocessing processes. In this paper, ...

Eugene Garfield’s article, “Citation indexes for science” [Science 122, 108 (1955)], is interesting beyond doubt. If we had in our library a citation index such as he proposes, I should use it to advantage. Amid today’s overwhelming difficulties in scientific communication, however, this index would solve too few problems to justify its surely great cost at this time. Even though all the cited ...

As indicated last week, Cut-rent

In a recent article, Zachary Neal (2011) distinguishes between centrality and power in world city networks and proposes two measures of recursive power and centrality. His effort to clarify oversimplistic interpretations of relational measures of power and position in world city networks is appreciated. However, Neal’s effort to innovate methodologically is based on theoretical reasoning that i...