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991.
以我国证券市场2001年至2004上半年成立的38只开放式股票型基金为样本,考察了投资者行为以及基金分红策略、持有人结构、资产规模等因素对基金流量的影响.研究表明:基金投资者的心理因素对基金流量影响较大:我国证券市场投机盛行,波动性大的基金现金流量较大;基金管理人利用分红的双重作用能有效控制基金流量:持有人集中度的提高加大了开放式基金的流动性风险;基金流量与基金资产总值显著负相关,基金规模越大,持有人的流动性需求越大. 相似文献
992.
中国入世已近三年,但国内少有学者就中国复关和入世历程中的经验与教训进行专门探讨。WTO的性质、中国的创始缔约方地位及发展中国家地位,GATT/WTO加入程序的启动、工作组和事实确认程序,双边磋商程序、工作组报告、加入议定书的通过与生效等都值得反思。 相似文献
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995.
由于空间面板误差模型中的空间误差项和随机效应之间存在相关性,传统的面板数据模型随机效应检验无法直接应用到空间面板误差模型。如果采用极大似然估计法估计空间面板误差模型然后构建随机效应检验,又会遇到计算困难的问题。文章构建了空间面板误差模型中用来检验随机效应的C(α)检验,该检验仅依赖于参数的一致估计且计算简单。蒙特卡罗模拟结果表明本文提出的C(α)检验有良好的有限样本性质。 相似文献
996.
Age discrimination in the UK labour market. Does race moderate ageism? An experimental investigation
Nick Drydakis Peter MacDonald Vangelis Chiotis Laurence Somers 《Applied economics letters》2018,25(1):1-4
Governments encourage people to work longer in order that pension promises are sustainable as populations age. This approach presupposes that older workers are welcome in the market. This study undertakes a correspondence test to investigate whether ageism is prevalent in the UK at the initial stage of the hiring process. This study adds to the literature by investigating whether race can moderate the relationship between age and labour market outcomes. The results suggest that older people are penalized in the labour market. They have lower access to vacancies and sorting in lower-paid jobs. A minority racial background exacerbates both penalties. These new results call for anti-ageism and anti-racial policy actions in the workplace. 相似文献
997.
Davide Quaglione Massimiliano Agovino Claudio Di Berardino Alessandro Sarra 《Economics of Innovation and New Technology》2018,27(4):307-327
Using data from the survey ‘Aspects of daily life’ conducted on Italian individuals in 2014 by the Italian Institute of Statistics, we propose new evidence on the factors that encourage the adoption of fixed broadband, a topic relevant for the reduction of the so-called broadband demand gap. We estimate a probit model through the two-step Heckman procedure for the selection bias, and find that, besides the already studied socio-demographic determinants, Internet-capable devices other than personal computers, as well as recreational (essentially video contents) and cloud-related uses of the Internet, have a relevant positive role. Policies aimed at fostering the diffusion of smart homes and more generally of the Internet of things at the residential level might be very effective in favouring fixed broadband adoption, provided that the network be neutral, not discriminating between data based on their contents and/or the destination device, and that possible foreclosing behaviours in the access to (premium) contents be properly and promptly addressed. 相似文献
998.
Lan Thanh Nguyen Anh Pham Hoai Nguyen Steven van Passel Hossein Azadi Philippe Lebailly 《Journal of economic issues》2018,52(1):246-269
Preferential loans play an important role in the process of reducing poverty in developing countries. Considering the data set from the 2010 Vietnam Household Living Standards Survey, we aim to examine the influential factors in probability of households getting access to preferential loans. Additionally, we analyze the determinants of household income in association with the loans by applying a quantile regression model. Our results show that ethnicity-related factors have the largest marginal effect on the access to preferential loans. The results from the quantile regression model demonstrate that the debt factor has a deeper impact on the borrowing group at the lower quantiles of household income. 相似文献
999.
由于车联网(VANET)拓扑动态变化,车辆高速移动以及不同服务质量要求,制定媒体接入控制(MAC)协议面临巨大挑战。在控制信道间隔内采用基于TDMA和CSMA的混合接入协议是最有效的MAC协议之一。基于TDMA和CSMA的混合MAC协议(T-C-MAC)能够依据车辆环境调整TDMA帧长度,并能有效地传输非安全消息。为了提高T-C-MAC协议的性能,提出了一种基于三跳邻居信息的时隙调整(THSA) 算法。通过有效地调整车辆传输时隙,基于THSA的MAC(THSA-MAC)协议能够有效地实施广播服务,提高了安全消息传输率。实验数据表明,THSA-MAC有效地提高了安全消息传递率。 相似文献
1000.
The lack of adequate telecommunications infrastructure in developing regions makes wireless systems the most feasible solution for providing Internet connectivity. With the global migration of television (TV) systems from analogue to digital, the TV spectrum is expected to be shared between broadcasting and broadband services. However, the absence of suitable regulatory policies for TV band sharing and low average revenue per user experienced by wireless network operators makes it difficult to deploy broadband networks in developing regions, especially in rural areas. This article presents a co-evolution analysis of three key domains of change (policy, technology and business) in providing broadband connectivity focusing on the Southern African Development Community region. Furthermore, the article proposes public–private partnership and public–private–people partnership models for deploying wireless broadband networks in developing regions. This article is useful to various stakeholders, including policy-makers, governments, the wireless communications industry and academia, by addressing the digital divide in developing regions. 相似文献