基于层次分析法的电子商务专业人才培养质量评估研究

该文分析了层次分析法运用于教育评价的研究现状,以及影响电子商务专业人才培养质量的因素,构建了电子商务专业人才培养质量评价体系和判断矩阵。以江苏某高校的电子商务专业为例,运用层次分析法,综合评价电子商务专业教学质量,并提出了提高电子商务专业人才培养质量的建议。     

略论公路交通史编纂中的几个问题

盛世编史,伴随着我国改革开放,中国大地上掀起了规模空前的公路交通史的编纂。如何正确认识并解决编纂过程中出现的一系列理论与实际问题,将直接影响史书编写的进度与质量。故着重对公路交通史的性质、研究对象、任务、研究范围进行分析论述,以期编写出经得起时间考验,能切实起到为现实服务,推动时代前进的上乘之作。     

基于PHP MySQL的学报网站动态信息管理系统

针对各类学报网上信息管理的现状,采用PHP和MySQL动态网站设计技术和Windows＋Apache＋PHP＋MySQL＋Dreamweflver组合开发平台,系统地实现了一个方便、实用的学报网站动态信息管理系统。该方案对各种学术期刊杂志的Web网站设计工作具有一定的参考价值。     

反应等离子熔覆高铬铁基金属陶瓷增强耐磨涂层组织与性能

利用反应等离子熔覆技术、以Fe-Cr-C-W-Ni合金粉末为原料,在Q235钢表面制得了Cr7C3高铬铁基金属陶瓷增强耐磨复合涂层。利用SEM、EDS和X射线衍射分析了涂层的显微组织,在室温干滑动磨损试验条件下测试了涂层的耐磨性。结果表明:反应等离子熔覆Cr7C3高铬铁基金属陶瓷增强耐磨复合涂层硬度高、组织均匀、与基材之间为完全冶金结合;涂层在室温干滑动磨损试验条件下表现出优异的耐磨性,涂层磨损的质量损失随载荷增加十分缓慢,涂层具有优异的载荷特性。     

农民工组织问题研究

本文根据对农民工组织问题的分析,提出农民工组织化问题是解决农民工与城市之间社会整合问题的关键所在。文章指出解决农民工组织的问题要在原有的血缘、地缘、业缘等组织基础上进行组织创新,以一种结合以上三种因素的综合组织的形态在城市完成农民工的社会重建。     

Effect of high glucose levels on the calcification of vascular smooth muscle cells by inducing osteoblastic differentiation and intracellular calcium deposition via BMP-2/Cbfα-1 pathway

In this paper,we investigate the effect and the possible mechanism of high glucose levels on the calcification of human aortic smooth muscle cells (HASMCs).HASMCs were divided into four groups: normal glucose group (NG),osmolality control group (OC),high glucose group (HG,HASMCs culture medium containing 30 mmol/L glucose),and high glucose plus recombinant human Noggin protein (bone morphogenetic protein-2 (BMP-2) antagonist) group (HN).The mRNA levels and the protein expressions of BMP-2 and core binding factor alpha-1 (Cbfα-1) were measured by real-time quantitative polymerase chain reaction (PCR) and Western blot.After induced by 10 mmol/L β-glycerol phosphoric acid,cells were harvested for assessments of alkaline phosphatase (ALP) activities at Days 1,2,and 3,and intracellular calcium contents at Days 7 and 14,respectively.High glucose levels increased the mRNA levels and the protein expressions of BMP-2 and Cbfα-1 (P0.05).The expression of Cbfα-1 was partially blocked by Noggin protein (P0.05),while BMP-2 was not (P0.05).After being induced by β-glycerol phosphoric acid,high glucose levels increased the ALP activity [(48.63±1.03) vs.(41.42±2.28) U/mg protein,Day 3;P0.05] and the intracellular calcium content [(2.76±0.09) vs.(1.75±0.07) μmol/mg protein,Day 14;P0.05] in a time-dependent manner when compared with the NG group,while the ALP activity could not be blocked by Noggin protein [(48.63±1.03) vs.(47.37±0.97) U/mg protein,Day 3;P0.05].These results show that high glucose levels can evoke the calcification of HASMCs by inducing osteoblastic trans-differentiation and intracellular calcium deposition via the BMP-2/Cbfα-1 pathway,which can be partially blocked by Noggin protein.     

裸子植物的幼苗类型及其进化关系

 裸子植物的幼苗可分为3个类型、8个亚型。即：1．苏铁型，包括苏铁亚型、银杏亚型、南洋杉亚型；2．松型，包括杉亚型，松亚型，麻黄亚型；3．买麻膝型，包括买麻滕亚型，百岁兰亚型。类型和亚型都有特征描述，并有一个检索表。文中首先讨论了种子的起源是多元的，因而裸子植物的起源也应是多元的，是前裸子植物不同类型平行进化的结果。 又根据裸子植物幼苗类型的形态特征，提出裸子植物有4条进化路线，即：苏铁路线，银杏路线，松柏路线和买麻滕路线。还讨论幼苗类型之间的进化关系，认为除买麻滕型幼苗因其形态特殊有自己独特的发展路线外，总的趋势是由留土萌发向出土萌发发展。     

基于模糊层次分析的数字图书馆绩效评价

在总结以往数字图书馆绩效评价指标体系的基础上,结合数字图书馆评价指标体系的特点,提出运用层次分析法和模糊数学方法进行评价是最为简单易行而且科学的方法,建立了一个关于数字图书馆绩效的评价模型,并给出了用层次分析法确定指标权重和模糊综合评价方法的实施步骤,对数字图书馆的绩效评价研究具有实用性和可操作性。     

Convergent genomic signatures of high-altitude adaptation among domestic mammals

Abundant and diverse domestic mammals living on the Tibetan Plateau provide useful materials for investigating adaptive evolution and genetic convergence. Here, we used 327 genomes from horses, sheep, goats, cattle, pigs and dogs living at both high and low altitudes, including 73 genomes generated for this study, to disentangle the genetic mechanisms underlying local adaptation of domestic mammals. Although molecular convergence is comparatively rare at the DNA sequence level, we found convergent signature of positive selection at the gene level, particularly the EPAS1 gene in these Tibetan domestic mammals. We also reported a potential function in response to hypoxia for the gene C10orf67, which underwent positive selection in three of the domestic mammals. Our data provide an insight into adaptive evolution of high-altitude domestic mammals, and should facilitate the search for additional novel genes involved in the hypoxia response pathway.     

要遏制机遇因素在干部任用中的作用

机遇因素长期困扰我国人事任用工作。遏制干部任用中的机遇因素,主要应从坚持党管干部工作原则、改革人事制度、加强政治教育工作、加大人事工作反腐倡廉力度等方面作好工作,为建设一支高素质的干部队伍,提供组织保证、人才保证。