نتایج جستجو برای: invitation patterns
تعداد نتایج: 414731 فیلتر نتایج به سال:
The paper introduces cycles cross ratio, which extends the classic ratio of four points to various settings: conformal geometry, Lie spheres etc. Just like its counterpart is a measure anharmonicity between with respect inversion. It also provides M\"obius invariant distance spheres. Many further properties awaiting their exploration. In abstract framework new can be considered in any projectiv...
The kind invitation that I received from the organisers of this conference to contribute a paper surveying the history of present-day computers (the title suggested was "The Emerging Computer Industry Technology") immediately put me in mind of an earlier invitation. This was one that I received in 1990, out of the blue, from Professor I.B. Cohen, Harvard University's very eminent historian of s...
BACKGROUND After implementation of the PREDICA annual chest X-ray (CXR) screening program in smokers in the general practice setting of Varese-Italy a significant reduction in lung cancer-specific mortality (18 %) was observed. The objective of this study covering July 1997 through December 2006 was to estimate the cost-effectiveness of this intervention. METHODS We examined detailed informat...
Classic complexity theory indicates that a large number of natural combinatorial problems are inherently hard to solve algorithmically (in technical terms, they are NP-hard and, thus, it is not expected that they admit a polynomial time algorithm). The parameterization idea tries to cope with this rather discouraging fact by asking whether it is possible to to design algorithms where the non-po...
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