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排序方式: 共有70条查询结果,搜索用时 15 毫秒
1.
与经典资本结构理论的结论不同,我国国有企业的融资次序恰好是倒序的。这一现象有着深刻的政治经济学内涵,本质上它是由国家追求义理性的最大化,缓解财政压力的行为所内生决定的。因此,单纯从西方主流理论出发,不考虑我国转轨经济的背景对国有企业融资行为和由此而引致的治理结构所进行的分析,是不得要领的。 相似文献
2.
When testing for the equality of two distributions in a case-control design with treatment effects presumed to act possibly
on more than one aspect, different tests may be properly considered for testing for different features of a null hypothesis,
leading to the multiple aspect testing issue. Two different aspects are therefore of interest: the location-aspect, based
on the comparison of location indexes, and the distributional-aspect, based on the comparison of the empirical distribution
functions. A simulation study shows that the combined testing procedure exhibits a good robust overall performance, and an
application in biomedical research is also presented. 相似文献
3.
随着空中交通的信息传输与新应用拓展需求不断增加,1090ES信号容量有限问题日益显现,对1090ES信号进行容量扩充是一种有效解决途径。针对一种基于脉内调相的1090ES信号扩容技术,给出了叠加调制的信号模型,研究了1090ES信号的解调解码算法;在GNU Radio+ USRP软件无线电平台上,实现了1090ES扩容信号的产生和接收处理,包括脉冲位置调制(Pulse Position Modulation,PPM)与8PSK叠加调制、低通滤波、报头检测、载波同步、PPM解码和相位解调等,并利用Matlab对实验的解码错误率和信号的频谱特性做了统计分析与仿真,结果表明了该扩容技术的可行性。 相似文献
4.
Asif Rashid Tariq Masood John Ahmet Erkoyuncu Benny Tjahjono Nawar Khan Muiz-ud-din Shami 《Enterprise Information Systems》2018,12(2):96-136
The research aims to investigate business value critical success factors (CSFs) of enterprise systems (ES) through their life cycle in pursuit of resilient smart factory for emerging aircraft industry. This article provides an extensive literature analysis of past 22 years based on conscientious criteria of authors: (i) who have published strategic content relevant to CSFs, (ii) received more than 300 citations and (iii) concurrently published two or more papers relevant to ES CSFs. The most cited strategic CSFs were termed as classical CSFs. The 22 CSFs were identified, validated and synthesised for better understanding of success across life cycle by aircraft industry experts. The top 10 empirically verified CSFs have numerous differences with past generic classical CSFs. This article canvases real insights of two distinct views: process and variance approaches of the ES CSFs. The process approach, which is a neglected research area, facilitates the researchers for identification of ES life cycle process coupled with a view of resource deployment when it is needed the most. While the variance approach facilitates practitioners and researchers in finding out which resource (CSF) is relatively more important. The significant findings for ES life cycle can help the practitioners and researchers to make rational decisions throughout the ES life cycle. 相似文献
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文章从智能决策支持系统的概念、性能出发,探讨了该系统应用于管理决策的优势,并大胆描述了智能决策支持系统将对企业管理决策带来的巨大变化。 相似文献
7.
Testing one population variance and the difference in variances of two populations based on the ordinary t-statistics combined with the bootstrap method are suggested in this article. Suggested techniques are combined with Hall's transformation approach. Application of presented methods in domain of real economic data set is described and analyzed. We compare the outputs of suggested methods and traditional methods for considered data set. The results show that these introduced methods have small advantages in comparisons with traditional methods especially for small samples. 相似文献
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金融危机爆发后,银行业系统性风险得到了广泛的关注。基于2007-2012年中国10家上市银行的相关数据,文章利用MES方法测算系统性风险贡献度,分析贷款行业集中度对商业银行系统性风险的影响。研究结果表明,贷款行业集中度对商业银行系统性风险存在正向影响。因此,商业银行在投放贷款过程中,应该防范贷款行业投向的过度集中,从而减少系统性风险爆发的可能性。该研究结论为我国商业银行合理配置信贷资源提供了有利的依据。 相似文献
10.
传统的挣值方法中,进度指标的预测多表现单期、静态的特性,存在严重的局限性。为了改进和完善挣值管理方法中进度指标体系,在考虑时间序列的基础上,将统计方法引入挣值管理进度指标体系中,用更加科学的方法对项目进度指标进行描述,并在此基础上基于贝叶斯推断方法,加入专家意见,从统计学的角度提出了进度绩效指数的动态预测模型,因而,可以为项目管理者提供科学的据侧依据。 相似文献