Manufacturing''s Roel in Innovation Diffusion and Technological Substitution

Successful innovation management depends upon both, the intrinsic attributes of the new product to be marketed and the firm's internal performance like cost management, timely delivery and quality assurance. The impact of these latter aspects is frequently neglected in the design of models for supporting decision making in innovative firms.A model is outlined to study the market response of different manufacturing policies for innovative goods. It allows e.g. the evaluation of an aggressive strategy with large production capacities from the outset, or a more tentative behavior to. avoid the pressures stemming from high fixed cost and the risks of eventually idle capacity.     

B位元素掺杂对Y-Ba-Cu-O系ABO_3化合物超导电性影响的研究

自高T_c氧化物超导陶瓷出现以来,已提出了许多可能与超导电性相关的因素。为探讨这些因素对超导性的影响,对元素掺杂的研究有着重要的意义。按照容许因子公式的要求,我们选择了满足ABO_3化合物中B位要求条件下的过渡族元素,将它们掺入(YBa)CuO_3中时,能部分取代Cu的位置而处于B位上。这样利用B位元素的少量掺杂,可以作为“结构探针”引出与周围O的2P电子、氧缺位及Cu、稀土离子等相互作用信息的变化,有助于对超导微观机理的了解;又因为ABO_3化合物     

磺化四(1,4-二噻英)四氮杂卟啉铁的合成及初步表征

用氯磺酸作磺化剂,在四（1,4-二噻英）四氮杂卟啉铁配合物外围功能基对-二噻英环上发生直接取代反应,合成了水溶性良好的多取代磺化（1,4-二噻英）四氮杂卟啉铁配合物（简写为FeSPz（dtn）4）.并对磺化产物进行UV-Vis,IR,1HNMR和XPS等结构表征.     

一种含N和S高分子铑配合物的热稳定性研究

合成了一种新的含N和S的高分子铑配合物,通过运用红外光谱和XPS电子能谱测试手段,分析表征了配合物存在的NRh配位键和SPh配位键,发现高分子配合物中除了形成配位键的N和S外,还含有未参与配位的N和S;同时发现,这些未配位的N和S在该高分子铑配合物中能发生分子内取代反应,这一独特性质有助于提高该化合物的热稳定性.     

Coupled isomorphic substitution and exsolution of pyroxene,rutile, apatite and quartz in supersilicic garnet

Dissolution of pyroxene in garnet at ultrahigh pressures produces supersilicie garnet with the coupled substitutions of Si^Ⅵ M^Ⅵ= A^Ⅵ A^Ⅵ and Si^Ⅵ Na^Ⅷ=A^Ⅵ M^Ⅷ,which are enhanced by rising pressure. The supersilicic garnet and exsolution of pyroxene, rutile, apatite and quartz in garnet during decompression were found in natural rocks,pointing to the importance in studying mantle-derived rocks and ultrahigh pressure metamorphism related to plate deep subduction. Ti, P, K and H2O enters garnet via the substitutions of Ti = Si, P^Ⅵ Na^Ⅷ = Si^Ⅵ CaⅧ, Si^Ⅵ K^Ⅷ = AI^Ⅵ M^Ⅷ, and [(OH)4]^4- = [SiO4]^4- or [4H]^4 = Si^4 respectively. The possible entering of Eskola pyroxene component M0.5AlSi2O6 in clinopyroxene, together with the common pyroxene component M2Si2O6, into garnet can lead to the presence of the substitution of Si^Ⅵ 0.5□^Ⅷ= A^Ⅵ 0.5M^Ⅷ in garnet structure, which plays a key role in the exsolution of rntile, apatite and quartz in garnet. Two new breakdown reactions are thus proposed on the basis of the new coupled substitution, which can be regarded as a theoretical model for the exsolntion of the 3 minerals in garnet. The real exsolution may be a combination of several breakdown reactions.     

《春秋左传》中"无(有)以"

从句型变换的角度来看,位于动词前和句末的两种“无(有)以”结构,它们二者因在句中所处的位置不同而产生了分化。     

复变函数在换元积分法中的应用

讨论了复变函数方法在换元积分法中的应用．     

基于Client／Server体系结构的信息存取系统的设计

本文介绍了一个基于Ｃｌｉｅｎｔ／Ｓｅｒｖｅｒ体系结构的信息存取系统的设计思想，其中重点介绍了此系统中实现信息传递功能的公告服务器的设计与算法。     

中国20世纪50年代镍铬合金的代用研究

考察了中国20世纪50年代对镍铬合金代用的研究，总结了研究中所取得的成绩及其影响因素．认为此次代用研究所反映的引进技术的社会化工作，较之此后的许多引进技术的社会化活动更有成效．