应用模糊C均值聚类法判别同调机群正确性研究     

武艳  张莉莉  蒋志勋 《廊坊师范学院学报(自然科学版)》2011,11(4):43-45

利用BPA软件以新英格兰10机39节点系统为例,验证模糊C均值聚类法判别同调机群的正确性。  相似文献   

“5C”语篇分析模式在大学英语阅读教学中的应用     

吴军俐 《昆明师范高等专科学校学报》2015,(1)

将“5C”语篇分析模式运用于大学英语课堂教学,可以从微观和宏观两个方面进行分析。微观结构分析有助于学生对篇章的理解由词、句层面向语篇层面拓展,培养学生理解句与句、段与段之间的衔接及逻辑关系,注重对篇章的整体理解;宏观结构分析则从篇章结构、文化及语境等方面引导学生理解主题思想和作者意图,发掘深层内涵。  相似文献   

Open access to data: An ideal professed but not practised     

Patrick Andreoli-Versbach  Frank Mueller-Langer 《Research Policy》2014

Data-sharing is an essential tool for replication, validation and extension of empirical results. Using a hand-collected data set describing the data-sharing behaviour of 488 randomly selected empirical researchers, we provide evidence that most researchers in economics and management do not share their data voluntarily. We derive testable hypotheses based on the theoretical literature on information-sharing and relate data-sharing to observable characteristics of researchers. We find empirical support for the hypotheses that voluntary data-sharing significantly increases with (a) academic tenure, (b) the quality of researchers, (c) the share of published articles subject to a mandatory data-disclosure policy of journals, and (d) personal attitudes towards “open science” principles. On the basis of our empirical evidence, we discuss a set of policy recommendations.  相似文献   

(International) R&D collaboration and SMEs: The effectiveness of targeted public R&D support schemes     

Hanna Hottenrott  Cindy Lopes-Bento 《Research Policy》2014

This study analyses the impact and effectiveness of targeted public support for R&D investment at the firm level. We test whether the policy design aiming at incentivizing (international) collaboration and R&D in SMEs achieves input as well as output additionality. Our results show that the targeted public subsidies trigger R&D spending, especially so in internationally collaborating SMEs. We further evaluate the different impact of privately financed and publicly induced R&D investment on innovation performance. The results confirm that the publicly induced R&D is productive as it translates into marketable product innovations. While both types of R&D investments trigger significant output effects, the effect of policy-induced R&D investment on sales from market novelties is highest for international collaborators as well as for SMEs.  相似文献   

“P53 Codon 72 Single Base Substitution in Viral Hepatitis C and Hepatocarcinoma Incidences”     

Emad F. Eskander  Ahmed A. Abd-Rabou  Shaymaa M. M. Yahya  Ashraf El Sherbini  Mervat S. Mohamed  Olfat G. Shaker 《Indian journal of clinical biochemistry : IJCB》2014,29(1):3-7

Viral infection with hepatitis C virus (HCV) has a high propensity in becoming chronic and it is the major cause of hepatocellular carcinoma (HCC) worldwide. This review was basically established to illustrate the putative role of the P53 gene Arg72Pro polymorphism on various cancer models and viral infections, focusing on HCV and HCC incidences. Authors studied the 72 G/C single base substitution of P53 gene at codon 72 using various polymorphic techniques. Intriguingly, authors investigated that the P53 codon 72 plays a crucial role as risk factor in several cancer models. Others found that there is no association between codon 72 genotypes and HCV disease severity or liver cancer. Moreover, the lack of a significant relationship between this polymorphism and risk of HCC shows that it does not predispose towards hepatocarcinogenesis and the frequent loss of the proline allele in HCV-associated carcinogenesis of the liver plays some critical role in hepatocarcinogenesis. Amazingly, there is a significant correlation between male homozygotes for P53 72Pro with HCV type 1b infection. However, there was no significant difference between the P53 polymorphism and HCV genotypes 2a and 2b. It was concluded that the P53 gene polymorphism at codon 72 has been investigated as potential risk factor in several cancer models and HCV infections.  相似文献   

基于C64xDSP的遥测数据RS译码实现     

李彦伟  郭林楠 《大众科技》2014,(6):12-14

RS码是无线通信遥测信道中最常用的编码方式。TMS320C64x系列DSP是TI公司的高性能定点DSP,该DSP内嵌Galois域运算单元,且对RS译码算法的优化提供支持。文章论述了RS译码算法在C64x系列DSP中的实现过程和优化方法,给出了DSP硬件资源相关寄存器的配置和库函数的调用方法,最后对译码器进行了性能分析。  相似文献   

定量包装商品“C”标志的意义及其核查准备工作     

玉碧坚 《大众科技》2014,(1):131-132

"C"标志是定量包装商品生产企业计量保证能力合格的标志,它代表了生产企业对消费者的一种承诺,可以提高企业的形象和消费者对定量包装商品的信任度。文章从建立计量管理体系、计量器具配备、量值溯源、定量包装商品净含量检验等方面论述了进行"C"标志认证工作应重点关注的问题,为定量包装商品生产企业申请认证工作提供指导。  相似文献   

C语言指针教学思路     

孙春艳 《科教文汇》2014,(11):35-36

指针是C语言的重要数据类型,也是C语言的精华所在。正确而灵活地运用指针,可以编制出简练紧凑、功能强而执行效率高的程序。本文将从以下几方面介绍在教学中如何让学生走出指针学习的误区。。  相似文献   

基于B/S模式的综合信息系统集成平台的安全性措施   总被引：1，自引：0，他引：1  

鲍丽红  周荣辉 《天水师范学院学报》2004,24(2):40-43

管理信息系统发展到综合信息系统集成阶段后,安全问题成为系统集成工作中必须考虑的一个至关重要的问题。基于B/S模式的综合信息系统集成平台的安全性模型及该模型的具体实现方法、路线,在多用户的Web环境下,既能满足用户的需求又能最大限度地保证系统的安全,具有较强的实用性。  相似文献   

影响布尔津县少数民族中小学汉语教学的社会因素分析     

孟建国  朱建  张爱武 《新疆职业大学学报》2005,13(4):63-65,70

本文通过对影响新疆布尔津县哈萨克中小学汉语教学的社会因素的总结和分析，力图发现影响汉语教学问题的客观条件和社会因素，旨在能对提高布尔津县以及新疆地区、乃至全国民族地区的中小学汉语教学提供有价值的参考意见。  相似文献