The contribution of home value appreciation to us economic growth

Home value growth has played an important role in mitigating the effects of the 2001 US economic recession and sustaining subsequent economic growth. Home price appreciation builds home equity, which stimulates consumption expenditures in two ways. The first channel is through a wealth effect on consumption; a number of studies have found that the home equity wealth effect is much stronger than the stock equity wealth effect. Second, home equity extraction through first mortgage refinance or placing of second mortgages enables additional home improvement and consumer durable spending. Home values are driven by local economic conditions, not a valuation bubble; local markets with a strong economy will continue to enjoy house price growth above the national average, while weak economies will also experience weak house price performance.     

企业管理咨询效果评价的探讨

论述了企业管理咨询效果后评价的含义、评价指标与评价方法 ,并通过具体案例说明后评价的实用性     

对建筑工程定额应用中有争议问题的探讨

对建筑工程定额应用中一些有争议的问题,如土方工作面留设,砖砌泥浆池费用,混凝土构造柱交接部分的扣除,3.6m内天棚抹灰脚手架的计算,余数0.6m与0.6(层)的区别,以及对递增概念的理解等进行了分析探讨.     

基于DCF的企业价值评估——以贵州茅台为例

对目标企业合理的价值评估是投融资决策过程中非常重要的问题之一,选择适当的评估方法,以及评估变量是准确评估企业价值的前提.首先对三种企业价值评估方法进行比较,对比分析了收益法、市场法与成本法的不同,提出了收益法优于其他方法的结论.随后,详细介绍了收益法中现金流折现法（DCF）的模型构建,并以贵州茅台为例进行企业估值.     

Practice as research in performance: from epistemology to evaluation

Questions about the values of practice as research have steadily risen up the research agenda of the creative arts in British universities since the early 1990s. As American practitioner-scholar Richard Schechner writes: the relationship between studying performance and doing performance is integral (Schechner 2002 1). Yet, where are the differences between thinking and doing, interpreting and making, conceptualisation and creativity located? Are there special conceptual spaces for practice as research per se or do we need rather to consider more broadly the terms ‘writing’ and ‘research’? What kind of academy do we wish to create?

This paper focuses on the work of PARIP during the past two years. It introduces the project and contextualises it with a number of observations on the intellectual directions the project is taking, in consultation and collaboration with the range of artist-scholars in the UK and selected EU institutions. Jointly prepared by PARIP Director Baz Kershaw and postdoctoral Research Associate Angela Piccini this paper is characterised by dialectical interventions that we hope point to the range of thinking both within the project itself and beyond to the various PARIP communities in dance, film, television and drama.     

大岗山水电站施工灌浆计价与质量管理措施探讨

水电工程灌浆项目计价方式与质量控制是灌浆工程施工管理的关键环节。以大岗山水电站工程为例,介绍了固结灌浆及帷幕灌浆的质量控制标准和计价方式,以及灌浆施工过程控制效果,分析了管理中存在的问题及其产生原因。结合相关大型水电工程,提出了解决灌浆计价与质量控制的综合管理措施。所提出的一些具体建议措施,对于改进和提高灌浆施工过程质量控制、保证灌浆效果以及整体工程质量,具有实际参考价值。     

一个非结构化P2P网络中基于信誉的激励机制

在P2P网络中,freerider节点和恶意节点的不合作行为严重影响了P2P服务的可用性。为此,本文提出了一个应用于非结构化P2P环境下基于信誉的激励机制。该机制通过有限的信任信息的共享,实现信任评估和推荐信任度评估;并以此为基础,通过有效的拓扑构造和服务选择策略及服务请求冲突解析策略的选择,实现对合作节点的激励和对freerider和恶意节点的遏制及惩罚。分析及仿真实验表明,本文提出的基于信誉的激励机制是简单有效的。     

Sequential calibration of options

Robust calibration of option valuation models to quoted option prices is non-trivial but crucial for good performance. A framework based on the state-space formulation of the option valuation model is introduced. Non-linear (Kalman) filters are needed to do inference since the models have latent variables (e.g. volatility). The statistical framework is made adaptive by introducing stochastic dynamics for the parameters. This allows the parameters to change over time, while treating the measurement noise in a statistically consistent way and using all data efficiently. The performance and computational efficiency of standard and iterated extended Kalman filters (EKF and IEKF) are investigated. These methods are compared to common calibration such as weighted least squares (WLS) and penalized weighted least squares (PWLS). A simulation study, using the Bates model, shows that the adaptive framework is capable of tracking time varying parameters and latent processes such as stochastic volatility processes. It is found that the filter estimates are the most accurate, followed by the PWLS estimates. The estimates from all of the advanced methods are significantly closer to the true parameters than the WLS estimates which overfits data. The filters are also faster than least squares methods. All calibration methods are also applied to daily European option data on the S&P 500 index, where the Heston, Bates and NIG-CIR models are considered. The results are similar to the simulation study and it can be seen that the overfitting is a real problem for the WLS estimator when applied complex models.     

赋值层化占先模型

Ｂｅｚｚａｚｉ,Ｍａｋｉｎｓｏｎ及Ｐｉｎｏ最近系统地研究了一些非Ｈｏｒｎ型推理规则（它们强于ＲＭ规则或者与ＲＭ规则不可比）,给出了Ｐ＋ＲＭ＋ＷＤ与Ｐ＋ＲＭ＋ＲＣ非单调后承的表示定理,并将另两个非单调后承Ｐ＋ＷＤ及Ｐ＋ＲＣ的表示定理作为开问题提出来,文中提出两个新的占先模型类－赋值层化占先模型与ＰＲＣ模型,在有限语言情形下,利用这两个模糊类分别建立了Ｐ＋ＷＤ及Ｐ＋ＲＣ后承的表示定理,并用Ｐ＋ＷＤ的表     

吞吐量测试中所用数据包类型的选择

简单介绍了网络性能与吞吐量的关系,介绍了测量吞吐是的工具Ｔｒｅｎｏ。然后用实例说明了吞吐量与测试数据包是密切相关的,通过数据说明选择有效载荷为５１２字节的ＩＣＭＰ数据包作为测试吞吐量的数据包的合理性。