木薯变性淀粉在食品工业中的应用概述

木薯变性淀粉作为食品添加剂应用在食品工业中有其独特的优势,随着人们对木薯变性淀粉的认知,其使用范围逐步得到拓展,使用量逐渐增大。文章阐述了食品工业中常用的几种淀粉基食品添加剂及其应用发展趋势,并结合笔者多年从事变性淀粉技术研发的经验,着重介绍了几种木薯变性淀粉的性能,以及其在肉制品、面制品等行业的应用情况。     

What drives corporate default risk premia? Evidence from the CDS market

This article studies the economic factors behind corporate default risk premia in Europe during the period 2006–2010. We employ information embedded in Credit Default Swap (CDS) contracts to quantify expected excess returns from the underlying bonds in market-wide default circumstances. We disentangle the compensation to investors for unexpected changes in the creditworthiness of the bond issuer from their remuneration for the risk that the bond's price will drop in the event of default. Our results show that the risk premia associated with systematic factors influencing default arrivals represent approximately 40% of total CDS spread (on median). These premia also exhibit a strong source of commonality; a single principal component explains approximately 88% of their joint variability. This factor significantly covaries with aggregate illiquidity and sovereign risk variables. Empirical evidence suggests a public-to-private risk transfer between sovereign credit spread and corporate risk premia. Finally, the compensation in the event of default is approximately 14 basis points of the total CDS spread, and a significant amount of jump-at-default risk may not be diversifiable.     

An empirical test of the Dixit-Norman approach to factor price equalization, using cointegration techniques

An Empirical Test of the Dixit-Norman Approach to Factor Price Equalization, Using Cointegration Techniques. — Factor price equalization (FPE) occurs when international trade equilibrium reproduces the integrated world equilibrium (IWE). This allows a straightforward test of a necessary condition for FPE provided one has an idea of the IWE. The author considers Germany as such for France, Belgium and the Netherlands. Cointegration estimation techniques are preferred to SURE, because of endogenity and nonstationarity of the variables. Using the coefficient restrictions, estimation is performed with French and Belgian factor endowments and German sector allocations. Finally, FPE is checked by testing appropriate coefficient restrictions. Concluding, the author finds no long-term trade equilibrium with FPE for the countries considered.     

The Greek financial crisis: Growing imbalances and sovereign spreads

We discuss the origins of the Greek financial crisis as manifested in the growing fiscal and current-account deficits since euro-area entry in 2001. We then extend a model typically used to explain risk premia to assess the extent to which credit ratings captured these premia. Next, we estimate a cointegrating relationship between spreads and their long-term fundamental determinants and compare the spreads predicted by this estimated relationship with actual spreads. We find that spreads were significantly below what would be predicted by fundamentals from end-2004 up to the middle of 2005; by contrast, since May 2010, actual spreads have exceeded predicted spreads by some 400 basis points.     

The world price of liquidity risk

This paper empirically tests the liquidity-adjusted capital asset pricing model of Acharya and Pedersen (2005) on a global level. Consistent with the model, I find evidence that liquidity risks are priced independently of market risk in international financial markets. That is, a security’s required rate of return depends on the covariance of its own liquidity with aggregate local market liquidity, as well as the covariance of its own liquidity with local and global market returns. I also show that the US market is an important driving force of global liquidity risk. Furthermore, I find that the pricing of liquidity risk varies across countries according to geographic, economic, and political environments. The findings show that the systematic dimension of liquidity provides implications for international portfolio diversification.     

Order aggressiveness, pre-trade transparency, and long memory in an order-driven market

Recent empirical research has documented that the state of the limit order book influences stock investors' strategies. Investors place more aggressive orders when the same side of the order book is thicker, and less aggressive orders when it is thinner. We conjecture and demonstrate that this behavior is related to long memories of trading volume, volatility, and order signs in stock markets. We investigate our conjecture in two types of artificial stock markets: a transparent market, in which agents observe all limit orders on both sides of the book and order volumes at those prices before they trade; and a less transparent market, in which agents observe only the best five bid and ask quotes with the depth available at these limit prices. The first market structure resembles certain actual stock exchanges in the level of pre-trade transparency, such as the Australian Stock Exchange, NYSE OpenBook, and the London Stock Exchange, whereas the second market structure is consistent with stock exchanges such as Euronext Paris, the Toronto Stock Exchange, the Tokyo Stock Exchange, and Hong Kong Exchanges and Clearing. We demonstrate that our long memory results are robust with different levels of pre-trade transparency, implying that the strategy constructed by the state of the order book is key for explaining long memories in many actual stock exchanges.     

An open-economy macro-finance model of international interdependence: The OECD,US and the UK

This paper develops a multi-country macro-finance model to study international economic and financial linkages. This approach models the economy and financial markets jointly using both types of data to throw light on such issues. The world economy is modelled using data for the US and aggregate OECD economies as well as the US Treasury bond market using latent variables to represent a common inflation trend and a US real interest rate factor. We find strong evidence of global effects on both the US and UK, calling into question the standard closed economy macro-finance specification. These economic linkages also help to explain the co-movement of yields in the US and UK Treasury bond markets.     

Capital structure in an emerging stock market: The case of India

This paper applies two alternative methods of estimation, viz., fully modified OLS (FMOLS) and generalized method of moments (GMM), to analyse the determinants of the capital structure of Indian firms using a panel of 1169 non-financial firms listed in either the Bombay Stock Exchange or the National Stock Exchange over the period 1995-2008. The results thus obtained are robust across the estimation methods. Among the three alternative theories of capital structure, the pecking order theory and the static trade-off theory both seem to explain Indian firms’ decisions. However, there is little evidence to support the agency cost theory.     

The Moving Average Ratio and Momentum

I show the ratio of the short‐term moving average to the long‐term moving average (moving average ratio, MAR) has significant predictive power for future returns. The MAR combined with nearness to the 52‐week high explains most of the intermediate‐term momentum profits. This suggests that an anchoring bias, in which investors use moving averages or the 52‐week high as reference points for estimating fundamental values, is the primary source of momentum effects. Momentum caused by the anchoring bias do not disappear in the long‐run even when there are return reversals, confirming that intermediate‐term momentum and long‐term reversals are separate phenomena.