Post李超代数结构的性质

通过post李超代数的定义, 讨论post李超代数结构的基本性质, 给出post李超代数的一些存在性结果, 并利用post李超代数可构造LR超代数和左对称超代数, 给出交换post李超代数结构的相关结果.     

中美高校教师管理若干方面之比较

本文通过比较中美两国高校在教师职务 ,教师聘任 ,教师考核管理上的异同 ,分析其产成的原因及其对教育质量的影响 ,指出我国高校必须借鉴美国高校的管理经验 ,并结合我国的实际 ,建立有利于吸引人才、稳定人才、激励人才的教师管理制度。     

IA-32计算机技术课程的教学方法设计与应用

深圳职业技术学院计算机应用工程系对原微型计算机原理课程进行改革，经过对三届学生的教学实践，将《IA-32计算机技术》课程的教学方法归纳为“一个平衡点、一条主线、四个支撑”，并对这种教学方法的设计思想和应用情况进行了描述。     

Synthesis of new thermosetting poly(2,6‐dimethyl‐1,4‐phenylene oxide)s containing epoxide pendant groups

A new class of thermosetting poly(2,6‐dimethyl‐1,4‐phenylene oxide)s containing pendant epoxide groups were synthesized and characterized. These new epoxy polymers were prepared through the bromination of poly(2,6‐dimethyl‐1,4‐phenylene oxide) in halogenated aromatic hydrocarbons followed by a Wittig reaction to yield vinyl‐substituted polymer derivatives. The treatment of the vinyl‐substituted polymers with m‐chloroperbenzoic acid led to the formation of epoxidized poly(2,6‐dimethyl‐1,4‐phenylene oxide) with variable pendant ratios, and the structures and properties were studied with nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, and gel permeation chromatography. The ratios of pendant functional groups were tailored for the polymer properties, and the results showed that the glass‐transition temperatures increased as the benzylic protons were replaced by bromo‐, vinyl‐, or epoxide‐functional groups, whereas the thermal stability decreased in comparison with the original polymer. Within a molar fraction of 20–50%, the degree of functionalization had little effect on the glass‐transition temperature; however, it correlated inversely with the thermal stability of each functionalized polymer. The thermal curing behavior of the epoxide‐functionalized polymer was enhanced by the increment of the pendant functionality, which resulted in a significant increase in the glass‐transition temperature as well as the thermal stability after the curing reaction. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 5875–5886, 2006     

后现代主义文化视野中的村上春树

日本现代文坛作家村上春树的作品引起了世界文坛的广泛关注,主要因为其作品中体现了文化意识的多元与整合,表现西方文化在当代日本的重要影响.他的以<斯普特尼克恋人>为代表的小说创作体现出多种文化的基本特征.     

Mass spectrometric analysis of low molecular mass polyesters by laser desorption/ionization on porous silicon

A low molecular mass polyester was analyzed by desorption/ionization on porous silicon (DIOS) mass spectrometry. The results were compared with those of matrix-assisted laser desorption ionization (MALDI) mass spectrometry using matrixes of alpha-cyano-4-hydroxycinnamic acid (CHCA) and 10,15,20-tetrakis(pentafluorophenyl)porphyrin (F20TPP). The CHCA matrix was not suitable for characterization of low molecular mass components of the polyester because the matrix-related ions interfered with the component ions. On the other hand, the F20TPP matrix showed no interference because no matrix-related ions appeared below m/z 822. However, the solvent selection for determining optimal conditions of sample preparation was limited, because F20TPP does not dissolve readily in any of the available organic solvents. In the DIOS spectra, the polymer ions were observed at high sensitivity without a contaminating ion. No matrix is needed for DIOS spectra of low molecular mass polyesters, facilitating sample preparation and selectivity of a precursor ion in post-source decay measurements.     

含偶氮苯的咔唑类双功能光折变聚合物的合成及表征

通过后重氮偶合方法制备了一系列不同生色团含量的咔唑类双功能光折变聚合物，并用IR、^1H-NMR、UV-vis、DSC以及GPC等对聚合物进行了分析和表征。IR和UV-vis谱图显示偶氮苯基团已接到咔唑环上。UV-vis结果表明：反应时间对该反应的影响非常大，当反应时间从6h增加到60h时，聚合物中生色团的含量从13.5%升高到66.7%。GPC结果显示后重氮偶合法比常规方法得到的该类聚合物的分子量明显提高。DSC结果显示聚合物的玻璃化转变温度随偶氮苯含量的增加而升高。     

渔业补贴之争与我国渔业补贴调整方向

近年来,渔业补贴问题成为国际社会的一大争议焦点,世贸组织<多哈宣言>已将其列为规则谈判议题之一.本文考察了国际社会围绕渔业补贴定义、分类方法和渔业补贴效果所产生的争议,分析了我国渔业补贴现状,并提出了相应的政策建议.     

传统&#183;现代性&#183;后现代

现代性是多元、多样的,因而传统和现代性可以会通,中国的现代性也自有特色;当代西方哲学对西方现代性的批判,围绕现代性与后现代的论争,对研究与实现中国的现代性有参考价值;要加强中国现代性的哲学研究。