国外主要科学资助机构推动科研人员参与科学传播的做法与启示

科研人员对科学有着较其他群体而言更为深入的理解,是科学传播工作中不可替代的重要主体。科学资助机构作为科学体制的重要组成部分,陆续开始关注并致力于推动科研人员参与科学传播,从而加强科学与社会的良性互动。文章调查了国外一些主要科学资助机构在推动科研人员参与科学传播方面的举措。在此基础上,进一步讨论了科学资助机构的定位问题,并结合我国的实际情况,尝试提出了相关政策建议。     

Constrained branch-and-bound algorithm for image registration

In this paper, the authors propose a refined Branch-and-Bound algorithm for affine-transformation based image registration. Given two feature point-sets in two images respectively, the authors first extract a sequence of high-probability matched point-pairs by considering well-defined features, Each resultant point-pair can be regarded as a constraint in the search space of Branch-and-Bound algorithm guiding the search process. The authors carry out Branch-and-Bound search with the constraint of a pair-point selected by using Monte Carlo sampling according to the match measures of point-pairs. If such one cannot lead to correct result, additional candidate is chosen to start another search. High-probability matched point-pairs usually results in fewer loops and the search process is accelerated greatly. Experimental results verify the high efficiency and robustness of the author＇s approach.     

论国家权力的程序制约技术——以美国宪法切入

民主国家的国家权力如果没有一套有效的程序制约技术,将会脱离宪政,成为"警察国家"。因此,制约国家权力,成为民主国家法治的一个重要组成部分。纵观发达国家的法律制度,都有着一整套的制约国家权利的法制。在研究发达国家对国家权利程序制约技术的基础上,对我国的国家权力如何有效地开展程序制约进行了深入的研究和探讨。