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《CAD/CAM与制造业信息化》2010,(5):4-4
PTC公司于2010年5月11日宣布,公司总裁兼首席运营官James E.Heppelmann将于2010年10月1日接替C.Richard Harrison出任PTC首席执行官,Harrison则出任公司执行主席。 相似文献
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《计算机辅助设计与制造》2010,(5):4-4
近期,一档全新的交互式网络系列节目诚邀世界各地的工程师们参加,他们可以通过投票、发布TWeet消息和关注博客等方式发表意见看法。Let’a Go Design是一档由DSSolidWorks赞助且面向所有工程师社区的电视系列节目, 相似文献
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自从假期上网为老妈购买了充值卡之后,面条也喜欢没事在网上"淘淘宝"啦。他看到周围的很多同学也常在网上购物,敏锐地嗅到这里面蕴含的商机,琢磨着也上网开个小店,赚点生活费。说干就干,面条的开店之旅开始了…… 相似文献
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Raqueline A. M. Santos 《Quantum Information Processing》2016,15(11):4461-4475
When searching for a marked vertex in a graph, Szegedy’s usual search operator is defined by using the transition probability matrix of the random walk with absorbing barriers at the marked vertices. Instead of using this operator, we analyze searching with Szegedy’s quantum walk by using reflections around the marked vertices, that is, the standard form of quantum query. We show we can boost the probability to 1 of finding a marked vertex in the complete graph. Numerical simulations suggest that the success probability can be improved for other graphs, like the two-dimensional grid. We also prove that, for a certain class of graphs, we can express Szegedy’s search operator, obtained from the absorbing walk, using the standard query model. 相似文献
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Péter Biró Tamás Fleiner Robert W. Irving 《Annals of Mathematics and Artificial Intelligence》2016,78(3-4):303-321
In a seminal paper Phan Minh Dung (Artif. Intell. 77(2), 321–357, 1995) developed the theory of abstract argumentation frameworks (AFs), which has remained a pivotal point of reference for research in AI and argumentation ever since. This paper assesses the merits of Dung’s theory from an epistemological point of view. It argues that, despite its prominence in AI, the theory of AFs is epistemologically flawed. More specifically, abstract AFs don’t provide a normatively adequate model for the evaluation of rational, multi-proponent controversy. Different interpretations of Dung’s theory may be distinguished. Dung’s intended interpretation collides with basic principles of rational judgement suspension. The currently prevailing knowledge base interpretation ignores relevant arguments when assessing proponent positions in a debate. It is finally suggested that abstract AFs be better understood as a paraconsistent logic, rather than a theory of real argumentation. 相似文献
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