基于实证分析的我国外贸依存度经济安全警示意义研究

文章在归纳关于对外贸易依存度研究的基础上,对当前的研究成果进行了分析,提出汇率,特别是实际汇率是影响我国进出口贸易依存度的一个影响因素。之后对实际汇率与贸易依存度的关系进行了理论分析和实证检验,发现理论分析与实证检验的结果截然相反。在对此结果进行分析后,提出了对外贸易依存度研究的重点及方向。     

新疆公立医院采购支出与付款内部控制研究

公立医院在采购支出与付款内部控制中存在着诸多问题。因此,加强医院自身的内部控制,建立公立医院采购支出与付款内部控制行之有效的监督制约机制十分必要。本文以若干家公立医院调查数据为依据,采用实证分析的方法对有关问题进行了分析,得出有关研究结论,并对公立医院如何进一步加强采购支出与付款内部控制提出了建议。     

高校特点对预算松弛影响的实证研究——以新疆为例

本文在文献综述的基础上,以新疆高校为例,对高校特点影响预算松弛问题进行了实证检验。研究提出5个需要检验的假设,根据有效问卷数据的统计分析,本文的研究结果发现：办学层次和预算松弛程度显著负相关,即办学层次越高,预算松弛程度越低;高校的预算松弛程度与学校规模正相关;相对于专业性院校,综合性院校预算松弛程度更高。     

离差交易的实证研究与探讨

离差策略是一种对冲交易策略，它是利用股指期权和一揽子股票期权（或部分成分股构成的ETF期权）之间的隐含相关系数，获悉市场成分股期权和股指期权波动率高低的相对关系，再在成分股期权和股指期权建立相反的头寸。离差交易策略选择暴露的风险因子就是隐含相关系数，离差交易使用的是对冲的平价跨式期权交易。选用2006年5月18日至2014年7月17日前复权的沪深300股指、上证50指数和上证180指数作为样本，进行实证检验。虽然结果显著性较强，但不排除存在模型不稳定性以及由于数据不充分造成对相关系数及波动率估计的偏误。同时，离差交易使用的是对冲的平价跨式期权交易，所以组合暴露较小的Delta风险。若离差交易涉及较大的资金量时，则需要用标的资产对组合进行动态Delta中性对冲。     

Project management infrastructure: The key to operational performance improvement

Process improvement programs such as Six Sigma, Lean, and Lean Sigma are very important and deserve serious academic research attention. However, definition problems make it difficult to study any specific type of process improvement program. Therefore, this study defines two organizational level program management factors, Strategic Project Selection (SPS) and Project Management Infrastructure (PMI), that are independent of any specific process improvement program. Drawing upon current literature, this study develops and tests theoretical models that relate SPS and PMI to operational performance improvement and to each other. Using empirical data collected from 53 supplier plants of one large high-tech firm, this study finds that at the plant level, SPS mediates the relationship between PMI and operational performance improvement. This insight contributes to both theory development and practice, suggesting that a viable strategy for a process improvement program’s success is to focus on PMI in order to enhance SPS and ultimately improve performance. Not to be reproduced or quoted without written permission from the authors.     

Conditional empirical likelihood estimation and inference for quantile regression models

This paper considers two empirical likelihood-based estimation, inference, and specification testing methods for quantile regression models. First, we apply the method of conditional empirical likelihood (CEL) by Kitamura et al. [2004. Empirical likelihood-based inference in conditional moment restriction models. Econometrica 72, 1667–1714] and Zhang and Gijbels [2003. Sieve empirical likelihood and extensions of the generalized least squares. Scandinavian Journal of Statistics 30, 1–24] to quantile regression models. Second, to avoid practical problems of the CEL method induced by the discontinuity in parameters of CEL, we propose a smoothed counterpart of CEL, called smoothed conditional empirical likelihood (SCEL). We derive asymptotic properties of the CEL and SCEL estimators, parameter hypothesis tests, and model specification tests. Important features are (i) the CEL and SCEL estimators are asymptotically efficient and do not require preliminary weight estimation; (ii) by inverting the CEL and SCEL ratio parameter hypothesis tests, asymptotically valid confidence intervals can be obtained without estimating the asymptotic variances of the estimators; and (iii) in contrast to CEL, the SCEL method can be implemented by some standard Newton-type optimization. Simulation results demonstrate that the SCEL method in particular compares favorably with existing alternatives.     

Strategic supply management,quality initiatives,and organizational performance

Researchers in supply chain management have found over the past two decades that supply management should be not merely a purchasing function but a strategic tool for supply chain integration. Supply management, the cornerstone of the integration of industrial supply chains, has evolved as a key research area. Based on quantitative and qualitative investigations of 225 electronics manufacturing firms, we examine the organizational impacts of strategic supply management (SSM) and the contexts of company size, process type, ISO 9000 certification, and quality management (QM) implementation that facilitate such an endeavor. We reveal that SSM is essentially a quality management initiative that requires bilateral efforts for continuous improvement and thus is not associated with the basic requirements of ISO 9000. We find that SSM improves on-time shipments, reduces operational costs, and leads to customer satisfaction and improved business performance. Developed based on contemporary premises in supply chain and QM, this research refines our understanding of the relationships among quality initiatives, SSM, and organizational performance.     

对基于价值无差异的资产定价模型的实证检验——兼解释股权高溢价之谜

陈小悦和孙力强（2007）在价值无差异的基础上建立了一套全新的定价模型,本文采用股票市场的数据对该模型进行了实证检验,模型检验的同时也是对股权溢价之谜进行解释。研究结果表明,本文的定价模型在美国、中国内地和中国香港三个市场的检验都取得了良好的效果,即市场风险溢价均值都向模型的理论值收敛,实际风险溢价与理论值差异很小且不显著,采用该模型可以准确地描述股票市场组合收益率与风险的关系,并对股权溢价之谜做出合理的解释。     

中国外汇储备适度规模实证分析

近年来,我国外汇储备的快速增长引发了理论界关于当前外汇储备规模是否适度的广泛讨论。本文在外汇储备适度规模研究现状的基础上,从需求角度出发,采用1985～2006年的年度数据,运用多种统计方法对影响外汇储备的因素进行分析,测算出外汇储备的适度规模,并解释外汇储备的失调情况,最后提出了优化外汇储备规模和结构的相关建议。     

江浙沪二省一市银行结算账户及资金往来分析

江浙沪两省一市作为地域相连、文化相近、结构互补的较为完整的城市经济区域,是我国经济发展的重心区,并将继续对我国未来的经济发展产生越来越大的影响。本文试图通过采用人民币银行结算账户管理系统及支付管理信息数据,对江浙沪二省一市银行结算账户流入流出、单位存款人的行业归属及资金往来情况进行实证比较分析,来提出推动长江三角洲地区金融一体化的决策依据。