数字校园环境下的教学管理研究

为了进一步完善具有发达地区高等职业教育特色的教育教学质量保障体系,势必利用现代信息技术,建立与健全现代化先进教学管理的理念,并结合学校集成式数字校园应用平台建设,充分发挥数字化信息管理在教学管理中的作用。     

Mindfulness,socioemotional wealth,and environmental strategy of family businesses

The study advances knowledge in the field of business strategy and the environment by incorporating mindfulness theory into the research on socioemotional wealth (SEW) and its environmental consequences in family businesses. Using an integrative model, the paper investigates the relationship between mindfulness SEW dimensions and family firms' environmental strategies, specifically in developing sustainable products and processes. This study also proposes the firm's capabilities as a mediator in this relationship, while market turbulence is a moderator in the relationship between the firm's capabilities and sustainable products and processes. The empirical results show that in protecting SEW, specifically in the identification of family members with the firm and binding social ties, mindfulness provides a rich endowment that develops appropriate capabilities to produce sustainable products and processes. While the moderating role of market turbulence is insignificant, we can infer that irrespective of how turbulent (or not) the market is, the firm's capabilities are a key determinant of sustainable products and processes. Our findings offer theoretical and managerial implications for sustainable practices in the family business context.     

基于流程导向的创意服务企业知识管理个案研究

本文以水晶石——一家典型的创意服务企业为例,着重对该企业知识管理流程进行研究,通过分析水晶石业务流程特点构建出知识管理流程模型,描述了在业务流程不同阶段企业知识的流动方式,分析了当前企业存在的几种知识管理问题并提出相应的解决措施。     

中国房价是否存在泡沫——基于省际面板数据的协整分析

本文在理性预期的框架下,从现值模型出发,得到了房地产价格与收入的关系式。如果房地产价格与收入是非平稳过程,只有当房地产价格与收入呈协整关系时,才没有房地产泡沫,否则将出现房地产泡沫。本文对我国31个省、市和自治区1999-2008年的面板数据进行分析,发现商品房销售价格与城镇居民可支配收入皆为一阶单整过程,并且两者存在协整关系,从而得知,从全国范围来言,我国房地产市场并不存在泡沫;进一步按东、中、西部分析,发现中西部地区房地产市场也不存在泡沫,但东部地区房地产市场存在泡沫。     

Volatility swaps and volatility options on discretely sampled realized variance

Volatility swaps and volatility options are financial products written on discretely sampled realized variance. Actively traded in over-the-counter markets, these products are often priced by continuously sampled approximations to simplify the computations. This paper presents an analytical approach to efficiently and accurately price discretely sampled volatility derivatives, under a general stochastic volatility model. We first obtain an accurate approximation for the characteristic function of the discretely sampled realized variance. This characteristic function is then applied to price discrete volatility derivatives through either semi-analytical pricing formulae (up to an inverse Fourier transform) or an efficient Fourier-cosine series method. Numerical experiments show that our approximation is more accurate in comparison to the approximations in the literature. We remark that although discretely sampled variance swaps and options are usually more expensive than their continuously sampled counterparts, discretely sampled volatility swaps are more prone to be cheaper than the continuously sampled counterparts. An analysis is then provided to explain why this is the case in general for realistic contract specifications and reasonable model parameters.     

Multivariate realised kernels: Consistent positive semi-definite estimators of the covariation of equity prices with noise and non-synchronous trading

We propose a multivariate realised kernel to estimate the ex-post covariation of log-prices. We show this new consistent estimator is guaranteed to be positive semi-definite and is robust to measurement error of certain types and can also handle non-synchronous trading. It is the first estimator which has these three properties which are all essential for empirical work in this area. We derive the large sample asymptotics of this estimator and assess its accuracy using a Monte Carlo study. We implement the estimator on some US equity data, comparing our results to previous work which has used returns measured over 5 or 10 min intervals. We show that the new estimator is substantially more precise.     

The Deviance Information Criterion in Comparison of Normal Mixing Models

Model selection from several non‐nested models by using the deviance information criterion within Bayesian inference Using Gibbs Sampling (BUGS) software needs to be treated with caution. This is particularly important if one can specify a model in various mixing representations, as for the normal variance‐mean mixing distribution occurring in financial contexts. We propose a procedure to compare goodness of fit of several non‐nested models, which uses BUGS software in part.     

政府治理框架下看美国联邦预算僵局——表现形式、制度成因及启示

政府治理中,预算制度和过程建设是关键,一个为民负责、有制衡监管和公开透明机制的预算制度,应能起到压缩非良态治理的空间并最后达成良态治理的作用。美国联邦的预算制度,其政治权力的制衡、立法对行政的监管以及其制度的公开透明,有其可取之处。然而,尽管有比较完整的预算制度,联邦却依然频发预算僵局。当联邦预算僵局被放置在政府治理的框架中来看待时,这样的僵局更多反映的是美国制衡监管的制度设计。从国际比较看,有预算僵局不一定是坏事,而没有预算僵局不一定是好事。     

探析甲供设备业务处理

“甲供设备”是工程建设中经常发生的业务,但在具体实践中存在多种不同的管理和核算模式,对建设单位和施工单位有不同影响。通过对甲供设备业务处理的各种模式进行了探析,从造价、会计及税法等多个角度进行比较分析。并对各种模式的会计核算依据和优缺点进行了一定程度的总结。     

农业投入品价格上涨对我国园艺产品收益影响的经济计量分析——以柑橘为例

采用1989～2006年的时序数据,通过建立向量自回归模型考量我国农业投入品价格上涨与柑橘收益之间的动态影响关系,并在对VAR模型进行残差检验和稳定性检验的基础上,运用脉冲响应函数和预测方差方法进行经济计量分析。研究结果表明,柑橘每亩纯收益对农业投入品价格上涨有负向响应并趋向稳定;农业投入品价格上涨对柑橘每亩纯收益增长有正向响应并趋向稳定。为有效缓解我国农业投入品价格大幅度上涨对柑橘收益产生负面影响,政府应健全农业投入品调控机制,取消农业投入品生产和流通环节的补贴政策,对农民实行直接补贴;建立中央和地方两级农业投入品储备制度,平抑农业投入品市场价格季节性波动;完善农业投入品连锁经营体系,降低农业投入品流通成本。