房地产及其金融衍生品的虚拟价值研究

房地产是人们广为认可的财富标志,其虚拟价值具有三个属性:趋于形式化、具有寻租变现能力和保值增值能力.本文概述了房地产、房地产金融衍生品MBS、以MBS为参考组合经层层打包得到的复杂金融衍生品作为财富标志的发展和演化过程,分析MBS和CDO的结构特征和虚拟价值,得到房地产和房地产金融衍生品的虚拟价值具有“边际永不存在和边...     

资源金融炒作与次债CDO精巧设计:为国际金融资本挖掘了坟墓

由美国"次贷危机"诱发的"金融海啸"的本质是资源金融炒作与次债CDO精巧设计"碰撞"的结果,是国际金融资本因贪婪给自己挖掘的坟墓。由此,我国应高度重视资本大规模流动的监测和对策研究,加强国际合作来限制资源金融的炒作,注重金融创新风险濡染机制的研究,完善对金融创新的有效监管。     

Credit risk and sustainable debt: a model and estimations of why the Euro is stable in the long-run

Sustainable debt has become the key issue in rating of private as well as sovereign debtors. The problem of how to estimate sustainable debt has also been at the center of the debate over the Asian 1997–1998 financial crisis. If the external value of the currency depends on the external debt of a country, it is necessary to estimate the creditworthiness of the country. This paper studies credit risk and sustainable debt in the context of a dynamic model. For a dynamic growth model with an additional equation for the evolution of debt, we demonstrate of how to compute sustainable debt and creditworthiness. The model is estimated by employing time series data for the core countries of the Euro-area. The computations show that the Euro-area has large external assets. Using time series methods, the sustainability of external debt (assets) is estimated for those core countries of the Euro-area. Those estimations show that the Euro will be a stable currency in the long-run.     

Intra-industry differences in vertical integration, heterogeneous costs and pricing: the case of web hosting

In many differentiated product industries, both traditional and “new economy” activities, vertically integrated firms also supply inputs to apparent rivals in the downstream business. This generates heterogeneity between low- and high-sunk cost suppliers with implications for entry and competitive conduct. The web hosting market is typical with primary suppliers operating alongside resellers who rent server space from them. We explore the impact of competition in US hosting using a unique dataset covering 15,000 packages offered by 3,500 firms. The results suggest price is sensitive to competitor clustering in quality space; an outcome consistent with easy entry for resellers with ultra-low fixed costs.

Between European integration and regional autonomy: the case of Italy from an economic perspective

Italy has experienced a double political phenomenon over the last few decades: a transfer of powers to a supranational entity (the EU) and a move towards regional autonomy. This paper aims to evaluate how policy competences are attributed to and exercised by the European, national and regional institutions. It develops a set of quantitative indicators analysing the legislative production of the EU, the Italian parliament and the Italian regions in various policy areas. The main findings indicate a certain substitutability between European and national legislation and that different levels of government share competences in a larger number of sectors than suggested by the economic theory.

基于风险视角的商业银行资本结构研究

基于银行风险行为的异质性,以效用最大化为期望目标,通过推导商业银行资本约束曲线和效用曲线,建立资本－风险局部均衡模型,拓展资本监管效应理论分析框架,在资本监管强化背景下,运用该模型进一步分析商业银行的风险行为、经营行为对资本监管约束的差异性反应。建立的资本－风险均衡模型有别于前人的成果,具有较强的包容性和较高的解释能力。     

Market volatility and the dynamic hedging of multi-commodity price risk

Commodity cash and futures prices experienced a severe boom-and-bust cycle between 2006 and 2009. Increases in commodity price volatility have raised concerns about the usefulness of commodity futures and options as risk management tools. Dynamic hedging strategies have the potential to improve risk management when conditional (co)variances depart significantly from their unconditional, long-run counterparts and may be useful to decision-makers despite their greater complexity and higher transaction costs. We propose a Nonparametric Copula-based Generalized Autoregressive Conditional Heteroscedastic (NPC-GARCH) approach to estimate time-varying hedge ratios, and evaluate the benefits of dynamic hedging during four sub-periods between 2000 and 2011 using a stylized Texas cattle feedlot management problem. The NPC-GARCH approach allows for a flexible, nonlinear and asymmetric dependence structure between cash and futures prices for different commodities. We find that NPC-GARCH dynamic hedging performs better than either static, GARCH-Dynamic Conditional Correlation (DCC) or GARCH-Baba, Engle, Kraft and Kroner (BEKK) hedging in terms of lower tail risk (expected shortfall), but that there is no significant difference between hedging approaches in terms of portfolio variance reduction.     

Waves of international banking integration: A tale of regional differences

We propose an original measure of international banking integration based on gravity equations and a spline function on a panel of 14 countries and their 186 partners between 1999 and 2012. Contrary to the conventional wisdom, we uncover that: (1) the international banking integration outside the euro area has been tenaciously increasing since 1999 and has even strengthened after the crisis. (2) In contrast, the international banking integration of the euro area has been cyclical since 1999 with a peak in 2006 and a complete reversal since then. (3) This decline is not a correction of previous overshooting but a marked disintegration. (4) Outside the euro area, the level of income does not affect the shape of banking integration.     

Trade effects of regional integration: A panel cointegration analysis

The paper quantifies the most likely trade effects of the exceptional cases of the GATT/WTO system, namely, Regional Integration Agreements, on the selected member as well as non-member countries of the EU, NAFTA, MERCOSUR and AFTA. To this end, the gravity model was estimated through fixed effects model and panel cointegration analysis. It was found that the explanatory power of the latter has superseded the former one. For the case of EU, it was found that the intra-union trade-creation effect is approximately six times larger than extra-union effects. In NAFTA, exports to outside countries are significantly diverted. For MERCOSUR, on the other hand, results indicate that the integration has not contributed to intra-union trade. The members are still significantly dependent on extra-union imports, just like the members of AFTA.     

The relationship between risk-neutral and actual default probabilities: the credit risk premium

The study investigates empirically the relationship between the risk-neutral measure Q and the real-world measure P. We study the ratio between the risk-neutral and actual default intensities, which we call the coverage ratio or the relative credit risk premium. Actual default intensities are derived from rating agencies annual transition matrices, while risk-neutral default intensities are bootstrapped from CDS quotes of European corporates. We quantify the average risk premium and its changes over time. Compared to related literature, special attention is given to the effects of the recent financial and European sovereign crises. We find that average credit risk premia rose substantially and that post-crisis levels are still higher than those observed before the financial crisis. This observation is especially true for high-quality debt and if it persists, it will have an impact on corporates funding costs. The quantification and revision of risk premia contributes to the discussion of the credit spread puzzle and could give extra insights in valuation models that start from real-world estimates. Our work is furthermore important in the context of state aid assessment. The real economic value (REV) methodology, applied by the European Commission to evaluate impaired portfolios, is based on a long-term average risk premium.     

The effect of interfirm codevelopment competency on the innovation of the e-service process and product: the perspective of internal/external technology integration mechanisms

Service innovations are central to today's rapidly changing business environment. Because of heterogeneous customer demands, rapid product life cycles, and advances in information technology (IT) for services management, an expanded conceptualisation of e-service innovation is required. This study examines the mediating effects of internal and external technology integration mechanisms among interfirm codevelopment competency and the innovation of the e-service process and product. A field survey was conducted of IT departments in information service firms to test the theoretical model. IT managers were the key informants. Partial least squares (PLS) analyses supported the main premises of the proposed research model. The data suggest that firms in the information service industry emphasise interfirm codevelopment competency in developing e-service innovations but use different sets of technology integration mechanisms to enhance e-service product and process innovation.     

Empirical tests on the asset pricing model with liquidity risk: An unobserved components approach

The aim of this paper is to test empirically the conditional liquidity-adjusted capital asset pricing model (L-CAPM) developed by Acharya and Pedersen (2005). Accordingly, we propose to estimate the L-CAPM using unobserved components methodology, which allows us to take into account the main stylized facts characterizing liquidity. Based on a sample of firms listed on the NASDAQ, our empirical analysis reveals several findings. Firstly, we show that liquidity is time-varying and exhibits strong seasonality. Secondly, we highlight the impact of the liquidity level premium on asset prices. Thirdly, we show that the most important liquidity risk is related to the covariance between portfolio illiquidity and market returns. Fourthly, we observe a negative relationship between portfolio returns and market illiquidity. Fifthly, we find that liquidity risk and illiquidity level are not always positively correlated.     

Keep up with the winners: Experimental evidence on risk taking,asset integration,and peer effects

The paper reports the result of an experimental game on asset integration and risk taking. We find some evidence that winnings in earlier rounds affect risk taking in subsequent rounds, but no evidence that real life wealth outside the experiment affects risk taking. Controlling for past winnings, participants receiving a low endowment in a round engage in more risk taking. We test a ‘keeping-up-with-the-Joneses’ hypothesis and find that subjects seek to keep up with winners, though not necessarily with average earnings. Overall, the evidence suggests that risk taking tracks a reference point affected by social comparisons.     

Score-driven Markov-switching EGARCH models: an application to systematic risk analysis

We introduce new Markov-switching (MS) dynamic conditional score (DCS) exponential generalized autoregressive conditional heteroscedasticity (EGARCH) models, to be used by practitioners for forecasting value-at-risk (VaR) and expected shortfall (ES) in systematic risk analysis. We use daily log-return data from the Standard & Poor’s 500 (S&P 500) index for the period 1950–2016. The analysis of the S&P 500 is useful, for example, for investors of (i) well-diversified US equity portfolios; (ii) S&P 500 futures and options traded at Chicago Mercantile Exchange Globex; (iii) exchange traded funds (ETFs) related to the S&P 500. The new MS DCS-EGARCH models are alternatives to of the recent MS Beta-t-EGARCH model that uses the symmetric Student’s t distribution for the error term. For the new models, we use more flexible asymmetric probability distributions for the error term: Skew-Gen-t (skewed generalized t), EGB2 (exponential generalized beta of the second kind) and NIG (normal-inverse Gaussian) distributions. For all MS DCS-EGARCH models, we identify high- and low-volatility periods for the S&P 500. We find that the statistical performance of the new MS DCS-EGARCH models is superior to that of the MS Beta-t-EGARCH model. As a practical application, we perform systematic risk analysis by forecasting VaR and ES.

Abbreviation Single regime (SR); Markov-switching (MS); dynamic conditional score (DCS); exponential generalized autoregressive conditional heteroscedasticity (EGARCH); value-at-risk (VaR); expected shortfall (ES); Standard & Poor's 500 (S&P 500); exchange traded funds (ETFs); Skew-Gen-t (skewed generalized t); EGB2 (exponential generalized beta of the second kind); NIG (normal-inverse Gaussian); log-likelihood (LL); standard deviation (SD); partial autocorrelation function (PACF); likelihood-ratio (LR); ordinary least squares (OLS); heteroscedasticity and autocorrelation consistent (HAC); Akaike information criterion (AIC); Bayesian information criterion (BIC); Hannan-Quinn criterion (HQC).     

Cost-effectiveness analysis of secukinumab for the treatment of active psoriatic arthritis: a Canadian perspective

Objective: The study evaluates the cost-effectiveness of secukinumab, a fully human monoclonal antibody that selectively neutralizes interleukin (IL)-17A, vs currently licensed biologic treatments in patients with active psoriatic arthritis (PsA) from a Canadian healthcare system perspective.

Methods: A decision analytic semi-Markov model evaluated the cost-effectiveness of secukinumab 150?mg and 300?mg compared to subcutaneous biologics adalimumab, certolizumab pegol, etanercept, golimumab, and ustekinumab, and intravenous biologics infliximab and infliximab biosimilar in biologic-naive and biologic-experienced patients over a lifetime horizon. The response to treatments was evaluated after 12 weeks by PsA Response Criteria (PsARC) response rates. Non-responders or patients discontinuing initial-line of biologic treatment were allowed to switch to subsequent-line biologics. Model input parameters (Psoriasis Area Severity Index [PASI], Health Assessment Questionnaire [HAQ], withdrawal rates, costs, and resource use) were collected from clinical trials, published literature, and other Canadian sources. Benefits were expressed as quality-adjusted life years (QALYs). An annual discount rate of 5% was applied to costs and benefits. The robustness of the study findings were evaluated via sensitivity analyses.

Results: Biologic-naive patients treated with secukinumab achieved the highest number of QALYs (8.54) at the lowest cost (CAD 925,387) over a lifetime horizon vs all comparators. Secukinumab dominated all treatments, except for infliximab and its biosimilar, which achieved minimally more QALYs (8.58). However, infliximab and its biosimilar incurred more costs than secukinumab (infliximab: CAD 1,015,437; infliximab biosimilar: CAD 941,004), resulting in higher cost-effectiveness estimates relative to secukinumab. In the biologic-experienced population, secukinumab dominated all treatments as it generated more QALYs (8.89) at lower costs (CAD 954,692). Deterministic sensitivity analyses indicated the results were most sensitive to variation in PsARC response rates, change in HAQ, and utility values in both populations.

Conclusions: Secukinumab is either dominant or cost-effective vs all licensed biologics for the treatment of active PsA in biologic-naive and biologic-experienced populations in Canada.     

才溪乡发展实证视阈下我国的城乡一体化建设

才溪乡81年的经济社会发展历程,是其发展和推动城乡一体化建设的历程,也是当前中国农村发展和城乡一体化建设的缩影。城乡一体化是解决"三农"问题的根本途径,是减少城乡差距的主要措施。因此,要加快城镇化进程和新农村建设,推动两者之间的统筹协调发展,发挥政府主导和县镇中介作用,抓好各项具体任务。     

Modeling technological innovation risks of an entrepreneurial team using system dynamics: An agent-based perspective

Continuous technological innovation has been playing a vital role in ensuring the survival and development of an enterprise in today's economy. This paper studies the problem of technological innovation risk-based decision-making from an entrepreneurial team point of view. We identify the differences between this team decision-making and a traditional individual decision-making problem, where decisions are mainly affected by the decision-maker's risk and value perceptions, and risk preferences. We create a modeling framework for such a new problem, and use system dynamics theory to model it from the agent-based modeling perspective. The proposed approach is validated by a case study of the technological innovation risk decision-making in a Chinese automobile company.     

地方债务膨胀对民间投资的门限效应——来自中国省际面板的实证研究

本文提供了一个关于地方债增长与地区民间投资关系的理论模型。基于多重门限面板模型,对中国1995-2014年的省际面板数据进行实证检验后发现:地方债增长对民间投资具有显著的门限影响效应,表现为地方负债对地区民间投资的负向效应将随地方债增长而逐级递减;受"四万亿"刺激性投资计划影响,2008年后,地方政府债务增长会对地区民间投资造成负向影响效应;分区域看,东中部地区不存在门限效应,西部地区的地方债增长对民间投资存在逐级递减的门限效应;非严重负债省份的债务增长会逐级提高民间投资,但严重负债省份的债务增长会逐级降低民间投资。     

International stock markets comovements: the role of economic and financial integration

The contribution of economic and financial integration to international stock markets comovements are investigated by means of a large scale macroeconometric model, set in the factor vector autoregressive framework (F-VAR). The findings point to a relevant role for both economic and financial integration in explaining international stock markets comovements for the G-7 countries. While economic integration would exercise its effects through the common response of stock markets to global economic shocks, financial integration would operate through financial shocks spillovers, particularly at the regional level.