学习风格与教学风格的冲突与整合

针对EFL学习中的各类学习者的学习风格,发现学生学习风格与教师风格的冲突所带来的学习效果的减弱,对于帮助教师在现代教学条件下进行教与学风格的有效整合,促使教师对传统教学法的进一步优化,阐释由此对英语教学改革所带来的积极意义。     

两种简便的模糊互补判断矩阵的调整方法

利用模糊一致矩阵的性质提出了两种便捷、易行的调整模糊互补判断矩阵的方法,讨论了这两种方法的性质,分别给出算例分析,并对这两种方法进行比较,探讨了各自的优势及适用范围.     

Bromelain: biochemistry, pharmacology and medical use

Bromelain is a crude extract from the pineapple that contains, among other components, various closely related proteinases, demonstrating, in vitro and in vivo, antiedematous, antiinflammatory, antithrombotic and fibrinolytic activities. The active factors involved are biochemically characterized only in part. Due to its efficacy after oral administration, its safety and lack of undesired side effects, bromelain has earned growing acceptance and compliance among patients as a phytotherapeutical drug. A wide range of therapeutic benefits has been claimed for bromelain, such as reversible inhibition of platelet aggregation, angina pectoris, bronchitis, sinusitis, surgical traumas, thrombophlebitis, pyelonephritis and enhanced absorption of drugs, particularly of antibiotics. Biochemical experiments indicate that these pharmacological properties depend on the proteolytic activity only partly, suggesting the presence of nonprotein factors in bromelain. Recent results from preclinical and pharmacological studies recommend bromelain as an orally given drug for complementary tumor therapy: bromelain acts as an immunomodulator by raising the impaired immunocytotoxicity of monocytes against tumor cells from patients and by inducing the production of distinct cytokines such as tumor necrosis factor-α, interleukin (Il)-1β, Il-6, and Il-8. In a recent clinical study with mammary tumor patients, these findings could be partially confirmed. Especially promising are reports on animal experiments claiming an antimetastatic efficacy and inhibition of metastasis-associated platelet aggregation as well as inhibition of growth and invasiveness of tumor cells. Apparently, the antiinvasive activity does not depend on the proteolytic activity. This is also true for bromelain effects on the modulation of immune functions, its potential to eliminate burn debris and to accelerate wound healing. Whether bromelain will gain wide acceptance as a drug that inhibits platelet aggregation, is antimetastatic and facilitates skin debridement, among other indications, will be determined by further clinical trials. The claim that bromelain cannot be effective after oral administration is definitely refuted at this time. Received 25 August 2000; received after revision 29 March 2001; accepted 30 March 2001     

互补二元阵列族的构造

研究了互补二元阵列族的构造,给出了分别应用列正交阵列,二元最佳阵列和阵列的互补侣构造互补二元阵列族的方法。     

偶数Goldbach猜想计算机可解问题讨论(Ⅰ)

根据递归可计算性理论 ,提出偶数Goldbach猜想计算机可解命题 .首先把问题转化为研究第一类命题 :偶数N的全排列是否存在问题 ?即是否存在B(2n)素数矩阵中 .文中设计并构造了基本存在模型 ,提出了完备互余式 (modN )等一组新的互余理论概念 .构造性地证明了偶数N的唯一存在性 ,并给出 :任一给定的正偶数 N≥ 6 ,必定唯一存在素数完备互余式 (mod N (P) )或正则素数完备互余式 (mod+ N (P) )中 .     

凸二次规划的广义互补主元算法及在组合投资中的应用

提出求解二次规划的一种算法－－广义互补主元算法,仅用行初等变换,无须人工变量,也不需要选择出其变量,在同一表格下可求出最优解,简化了Ｌｅｍｋｅ主元算法,该方法易于操作,在组合投资的若干优化模型中得到应用。     

权重信息完全未知且对方案有偏好的多属性决策法

研究了属性权重信息完全未知且决策者对方案有偏好的多属性决策问题. 针对决策者对方案的偏好信息以互补判断矩阵形式给出的情形, 基于互补判断矩阵, 利用线性转换函数将决策信息一致化, 然后建立了一个优化模型, 进而给出了一种相应的决策方案排序方法. 最后进行了实例分析.     

关于提高基建投资效益的思考

目前我国每年的基建投资多达一千多亿元,如何管好用好这些基建投资,使之最大限度地发挥投资效益,是摆在每个建设者面前的严竣课题。根据多年基本建设管理的经验,我们认为加强经济活动的系统管理和动态管理是提高基建投资效益的关键。     

Complementary replica of freeze-fractured human lymphocyte nuclei

Summary Complementary replicas of freeze-fractured human lymphocyte nuclei were obtained, and were studied with the electron microscope. Complementarity was evident in cross-fractured nuclear pore complexes and in particle-free membrane areas. Explanations for the observed structural peculiarities are considered.I thank the staff of the Immuno-Hematological Lab. (Med. Clinic of the University Hospital of Zurich) for showing me the lymphocyte isolation technique, Dr med. D. Meier-Göhr for performing the blood counts, T. Suda for helping me with the electron microscope, and E. Wehrli (Lab. of Electron Microscopy, Institute of Cell Biology/ETH, Zurich) for providing the freeze-fracture equipment.     

互补判断矩阵排序的广义χ2法

基于完全一致性互补判断矩阵的定义，以及互反判断矩阵与互补判断矩阵完全一致性定义之间的转换公式，证明了若干定理，提出了互补判断矩阵排序的广义χ^2方法。研究了它的一些优良性质，如：强条件下保序性等，给出了一个简洁的收敛性迭代算法，并把上述结论推广到群体决策中，人们在实际应用过程中，可根据不同的决策问题，适当地选取算法中的参数α，以便作出合理的决策，最后给出了一个算例。