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排序方式: 共有344条查询结果,搜索用时 632 毫秒
11.
截至2021年11月,我国单独境外上市企业占到境外上市企业总数的88.32%,但单独境外上市的研究明显与该数据不匹配,研究数量缺乏。为扩充该方面研究,本文以2012~2020年单独在美国和中国香港上市的中资企业为研究对象,对境外上市与投资效率关系进行检验。实证结果发现,单独境外上市与境内上市企业相比投资效率更低,区分企业上市地点后发现,规模大、信息透明度低、存在代理成本的赴港上市企业比境内上市企业投资效率低,规模小、代理成本高、信息透明度低的赴美上市企业比境内上市企业投资效率低。通过机制分析发现,信息透明度、境外上市和非效率投资三者存在"遮掩效应",境外上市企业未能受到有效的信息约束。 相似文献
12.
Measuring performance in the presence of stochastic demand for hospital services: an analysis of Belgian general care hospitals 总被引:1,自引:1,他引:0
Mike Smet 《Journal of Productivity Analysis》2007,27(1):13-29
Since demand for hospital services is subject to substantial variability, the relationship between uncertain demand, excess
capacity, hospital costs and performance should be investigated thoroughly. In this paper a waiting time indicator to proxy
hospital standby capacity is incorporated into a multi-product translog cost function for Belgian general care hospitals.
The indicator is derived from queuing theory and improves on the conventionally used (inverse of the) occupancy rate. The
multi-product stochastic frontier specification allows calculation of cost elasticities and marginal cost of seven hospital
departments, as well as the degree of economies of scale and scope and enables identification of differences in efficiency.
相似文献
Mike SmetEmail: |
13.
许利娜 《保险职业学院学报》2021,(1):67-71
私家车辆从事网约车载客行为而引起了大量纠纷,结合法院判决和其中事实判断涉及诸多争议.私家车"变脸"网约车进行载客不一定都使得危险显著增加,有些只是兼职网约车司机,风险程度不符合危险显著增加的三个特性,重要性、持续性和未曾估价性.网约车载客与交通事故发生不是必然的因果关系,只是路线不确定和行驶频率增加造成事故风险增加,让... 相似文献
14.
斯坦纳的生态规划模式立足复合生态系统的结构与功能,对系统要素及其结构进行设计,实现整体人文生态系统的平衡性、和谐性和健康性。文章阐述了斯坦纳生态规划模式的11个相互影响的步骤,并从倡导生态文化、提倡公众参与和构建衡水湖生态规划适用模式三个方面,提出了对衡水湖生态建设的启示。 相似文献
15.
PD Dr. Klaus Arnold 《Publizistik》2008,53(4):488-508
To determine the various performance criteria concerning journalism it is reasonable to develop a broad concept, which integrates the different theoretical approaches. In a functional and system-oriented perspective, fundamental performance criteria can be based on the social function and the specific code of journalism, which emerged in an historical process of mutual observation of journalists and audiences. In a normative-democratic perspective, performance criteria can be derived from societal and human values codified in diverse regulations. However, in this regard it has to be taken into account that specific claims of the political subsystem also play an important role. Finally from an audience and action oriented viewpoint, it is important to keep in mind that journalistic communication must be useful and applicable in the world the audience lives in. 相似文献
16.
由于区域内创新资源的有限性,区域创新生态系统中创新主体生态位之间的重叠程度对创新效率的影响愈发的显著,基于此本文运用生态位适宜度评价模型对我国30个省市 2011~2015 年的创新生态系统适宜度水平进行了测度,并分别与运用超效率数据包络分析法所测得的区域知识创新效率和产品创新效率进行了面板数据的回归分析。结果显示,区域创新生态系统的生态位适宜度对两个阶段的创新效率均具有正向的相关关系,但这种影响只具有短期的时间维度,并不存在两年及以上的相互作用。区域创新生态系统的对外开放会对产品创新阶段的创新效率产生负面影响,同时会促进知识创新阶段创新效率的提高。最后,在协调系统内部各生态位之间的发展关系时,应注重区域内经济发展水平对两个阶段创新效率的促进作用。 相似文献
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19.
《Journal of medical economics》2013,16(1-4):169-196
SummaryThis study seeks to determine the cost-effectiveness of the FreeStyle Navigator? continuous glucose monitoring system compared with self-monitoring of blood glucose (SMBG) when predicting hypoglycaemia and hyperglycaemia in pregnant women with insulin-dependent diabetes mellitus. A Markov model was constructed, and initial model analysis demonstrates that use of the FreeStyle Navigator? by a patient who is trained in diabetes management is more cost-effective than SMBG, resulting in an incremental cost-effectiveness ratio of $267 per quality-adjusted life-month ($3,204 per quality-adjusted life-year). The real-time glucose level rate of change and trend information provided by the FreeStyle Navigator? allows appropriately trained patients to improve upon decisions regarding self-treatment to prevent hypoglycaemic and hyperglycaemic episodes, resulting in a lower treatment cost and higher effectiveness than untrained patients. Based on current performance attributes, a device such as the FreeStyle Navigator? would be more cost-effective than other glucose-monitoring devices, meeting the $50,000/QALY willingness-to-pay threshold used by payers for adoption of new technology. 相似文献
20.
Susan Himmelweit Barbara Bergmann Kate Green Randy Albelda Charlotte Koren 《Feminist Economics》2013,19(2):237-264
This Dialogue presents the views of four authors, from the US, the UK, and Norway, on the best policies to help lone mothers. Lone mothers face an inevitable dilemma in allocating their time between earning income and caring for their children. The low-earning capacity of women in an unequal labor market exacerbates the problem, causing material hardship for many lone mothers and their families. The policy solutions proposed lie along a spectrum, ranging from those that seek to enable all lone mothers to take employment to those that aim to let mothers choose whether to take employment or care for their children themselves. Other policies discussed concern ways to value and support caregiving, improve the low-wage labor market for women, and provide a set of income supports that would both boost income and provide time to care for children. 相似文献