知识资本与电子商务企业核心竞争力     

徐津铭 《现代情报》2007,27(10):196-198

作为信息社会特征的电子商务企业，寿核心竞争力中起决定作用的不再是物质资本而是知识资本。本文阐述了知识资本与电子商务企业核心竞争力的内在联系．探讨了运用知识资本管理．提升电子商务企业核心竞争力的战略对策。  相似文献   

淫羊藿属的新分类群     

郭宝林  肖培根 《中国科学院研究生院学报》1993,31(2):194-196

One new species  and one  new variety  of the genus  Epimedium (Berberidaceae) are  described   from  China.  They  are  E. enshiense B. L.Guo et Hsiao and E. platypetalum var. tenuis B. L. Guo et Hsiao.  相似文献   

电子图书文件格式标准化现状及其思考     

李英 《现代情报》2007,27(7):213-214

电子图书的标准化问题已经成为制约电子图书产业发展的重要障碍。文章分析了电子图书文件格式的现状及影响，提出了制定电子图书标准化格式过程中应注意解决的几个问题。  相似文献   

Oxidative injury and antioxidant vitamins E and C in Schizophrenia     

Benedicta D'Souza  Vivian D'Souza 《Indian journal of clinical biochemistry : IJCB》2003,18(1):87-90

Susceptibility of Schizophrenic patients to lipid peroxidation relative to healthy control subjects was investigated by measuring the malondialdehyde (MDA) levels in plasma. The main finding was that Schizophrenic patients were more susceptible than control subjects to oxidative damage as evident from increased MDA levels in plasma. Antioxidant levels are also depleted in Schizophrenic patients when compared to normal subjects as evident from decreased levels of vitamins E and C in the plasma. Impaired antioxidant defense and increased lipid peroxidation suggests that treatment with antioxidants (Vitamin E, Vitamin C, beta carotene) at the initial stages of illness may prevent further oxidative injury and deterioration of associated neurological deficits in Schizophrenia.  相似文献   

试论电子商务发展中的问题与对策   总被引：1，自引：1，他引：1  

龚国伟 《现代情报》2005,25(8):2-4

本文分析电子商务发展中遇到的电子签名安全问题、电子合同与商务电子邮件的证据保全问题以及电子支付问题。并就这些问题提出了相应的对策。  相似文献   

绿色农产品电子商务平台对于供应链垂直协作体系的影响研究     

魏来  陈宏 《软科学》2007,21(5):68-71

介绍了电子商务平台的优势和农产品企业采取电子商务平台的制约因素,根据绿色农产品供应链的特点,从上游协会、中游"E-Agribusiness"企业和下游超市等三个方面,分别探讨了电子商务平台给整个绿色农产品供应链垂直协作体系带来的显著影响。  相似文献   

Effect of Vitamin E on sP-Selectin Levels in Pre-Eclampsia     

Wangkheimayum S  Kumar S  Suri V 《Indian journal of clinical biochemistry : IJCB》2011,26(2):169-171

P-selectin, a cell adhesion molecule is elevated in many inflammatory conditions including preeclampsia which is characterized by generalized endothelial dysfunction and vasoconstriction presumably due to free radicals or mediators released by defective placentation. Vitamin E has been documented to protect cell membranes from oxidative damage and also decrease platelet aggregation. The role of vitamin E in pre-eclampsia is contradictory and hence the study was undertaken. Soluble P-selectin was measured by ELISA and Vitamin-E levels in plasma was estimated spectrofluorometrically. In our study the effect of supplementation of 400 IU/day of Vitamin E (a-tocopheryl acetate) to patients of pre-eclampsia showed significant decreased levels of soluble P-selectin by 2nd week as compared to patients given placebo (P = 0.005). In this short period of study no direct correlations were observed between Vitamin E or P-selectin levels with blood pressure as well as with proteinuria. Future studies may focus on the effect of a-tocopheryl acetate or the phosphate form of Vitamin-E, recently proposed to be the more active form on other inflammatory markers like IL-6, an important stimuli of P-selectin release in pre-eclampsia.  相似文献   

Vitamin E status in protein energy malnutrition     

Pankaj Abrol  Neeraj Sharma  Harbans Lal 《Indian journal of clinical biochemistry : IJCB》1997,12(2):125-127

Serum vitamin E and cholesterol concentrations were measured in 50 children with protein energy malnutrition (PEM) and results were compared with a group of 50 normal controls. Mean serum vitamin E concentration as well as vitamin E/cholesterol ratio were found to be reduced in children with PEM while their mean serum cholesterol level was not significantly different from the control group. Data suggest that the reduced levels of serum vitamin E in PEM may be a result of malnutrition per se.  相似文献   

电子市场及其经济效应分析     

于立 《现代情报》2006,26(11):69-71

本文在总结国内外研究文献的基础上，概括了电子市场的本质和内涵；分别从交易成本、市场机制与内部化以及价格形成机制等方面，探讨了电子市场对经济活动组织方式的影响。  相似文献   

Replacing points by compacta in neural network approximation     

Paul C. Kainen 《Journal of The Franklin Institute》2004,341(4):391-399

It is shown that cartesian product and pointwise-sum with a fixed compact set preserve various approximation-theoretic properties. Results for pointwise-sum are proved for F-spaces and so hold for any normed linear space, while the other results hold in general metric spaces. Applications are given to approximation of L_p-functions on the d-dimensional cube, 1?p<∞, by linear combinations of half-space characteristic functions; i.e., by Heaviside perceptron networks.  相似文献