“考辨”“语境”和“设问”——例说高中历史史料教学的有效性

达成史料教学的有效性必须要认真考辨史料、了解史料的语境和恰当地设问,即做到真实、准确和巧妙。

龙榆生《东坡乐府笺》与傅干《注坡词》

傅干《注坡词》是苏轼词最早的笺注本,龙榆生的《东坡乐府笺》除对其大量采录外,还作了必要的增补和订正,但也有漏收及沿袭讹误之处。它从一个侧面印证了"作者不易,笺释家尤难"之说,也警示我们在古籍整理中必须确保严谨、审慎的态度。

Research on the detecting methods of singularity in deformation signal based on two kinds of wavelet entropy

There are various influencing factors that affect the deformation observation, and deformation signals show differ- ent characteristics under different scales. Wavelet analysis possesses multi-scale property, and the information entropy has great representational capability to the complexity of information. By hamming window to the wavelet coefficients and windowed wavelet energy obtained by multi-resolution analysis （MRA）, it can be achieved to measure the wavelet time entropy （WTE） and wavelet energy entropy （WEE）. The paper established deformation signals, selected the parameters, and compared the sin- gularity detection ability and anti-noise ability of two kinds of wavelet entropy and applied them to the singularity detection at the GPS continuously operating reference stations. It is shown that the WTE performs well in weak singularity information de- tection in finite frequency components signals and the WEE is more suitable for detecting the singularity in the signals with complex, strong background noise.

徐邦达与书画鉴定学

本文简要论述了徐邦达先生对书画鉴定学的发展,充分肯定其为书画鉴定所作出的奠基性贡献,着重总结了徐先生的鉴定方法论:即确立样板与形式比较;笔墨风格与风格把握;目鉴与考订相结合,分析了书画鉴定与美术史的关系和徐邦达的治学经验。

古书画鉴定研究的集大成者——庆祝徐邦达先生百年华诞的发言

徐邦达先生是古书画研究鉴定的集大成者,这是由各方面的因素造成的。作者长期侍从徐先生阅看古书画,对先生能成为集大成者,从各个方面进行了阐述。如:先生成名经历、艺术学养、学识功底、性情人品,特别是治学方法等。从中可以看出,徐邦达先生的所有学术著作,是一个全面的、有内在联系的古书画研究体系。