由polik寫於2008/02 閑論Atiyah-Singer指標定理 Nowadays, mathematicians tend to over-abstract things that in fact cannot be further abstracted, which not only dilutes the essence of concepts but also drives away potential students and users, and eventually, if this pathological mood is not cured [ ...閱讀全文 ]
John Dolbow Since its introduction in the summer of 1999, the eXtended Finite Element Method (X-FEM) has enjoyed a considerable level of success and popularity from researchers in the computational and applied mechanics communities. In just under a decade, more than five hundred peer-reviewed journ [ ...閱讀全文 ]
作者:劉夙 讀完羅伯特·溫伯格(Robert A. Weinberg)的《細胞叛逆者:癌症的起源》(One Renegade Cell: How Cancer Begins,郭起浩譯,上海科學技術出版社,2008年5月),不由得感慨萬千。 溫伯格是美國著名分子生物學家,他主持的實驗室在癌症起源的研究中做出了重大貢獻,我認為溫伯格完全有資格獲得諾貝爾 [ ...閱讀全文 ]
Background From fragile wires to structural steel components, metals producers are faced with a myriad of testing challenges. Metals manufacturers producing products such as plate, rebar, sheet metal and wire/cable, must not only meet advertised strength and performance ratings, but also comp [ ...閱讀全文 ]