水解酸化工艺在废水处理中的应用实践进展

时水解（酸化）工艺在废水处理工程中的过程、作用和应用进行了总结，指出水解（酸化）工段在对有机废水的处理工程中能优化废水处理工艺，提高处理效率。     

基于多因素分析的区域物流需求径向基函数网络预测

对区域物流需求量进行合理、精确地预测,能为政府部门科学制定物流规划、合理配置物流资源提供决策支持和依据。在对影响区域物流需求的多种因素进行全面分析以及物流需求量指标合理选取的基础上,采用径向基函数神经网络构建区域物流需求量的非线性预测模型,并以四川省相关统计数据为基础,对区域物流需求量进行了预测,取得了满意的预测结果。研究表明:该预测模型较全面地反映了区域物流需求量的变化规律,预测精度较高,泛化能力强,预测结果具有较高的可信性。     

Institutional Ownership and Private Equity Placements: Evidence from Chinese Listed Firms

This paper examines the impact of institutional ownership on the performance of private equity placements (PEPs) for listed firms in China. We find that the presence of institutional investors can alleviate the information asymmetries between listed firms and the market. The market reaction to PEP announcements is significantly smaller if there is a higher portion of institutional shareholdings. Long‐term firm operational performance after PEPs is positively correlated with institutional shareholdings. Moreover, we find that the relationship between institutional shareholdings and PEP performance is mainly driven by nonlisted corporate investors and mutual funds. Finally, the relationship between PEP performance and institutional shareholdings is stronger in smaller PEP issuers.     

地理标志农产品产业化的减贫增收效应——基于山西省110个县的实证分析

[目的]已有研究只注意到了地理标志产品的减贫增收效应,却并没有说明地理标志产品减贫增收效应的条件。文章旨在分析地理标志产品促进农村发展的条件和路径。[方法]在理论上分析了地理标志产品促进农村发展的两条主要路径,并使用山西省110个县的县级数据和计量模型,采用OLS和加权OLS回归方法,分析了地理标志农产品及产业聚集度对农民人均收入和农业人均生产总值的影响。[结果]拥有地理标志农产品是县级层面地方政府的自然优势,但只有形成一定的集聚程度并达到产业化才能形成区域竞争优势,并对当地的农民收入有减贫增收效应。[结论]认为地理标志产品的减贫增收主要有两条路径,首先,区域竞争优势对与该农业产业相关的经济资源有很强的集聚效应,加快了当地农业产业集群的形成,为实现产业化经营提供了一个新的"高位平台",从而促进农村减贫的进程;另外,推动当地农业的品牌化发展是地理标志提高农民收入促进农村减贫的另一条重要途径。     

Perceived ease of use in prior e‐commerce experiences: A hierarchical model for its motivational antecedents

This study develops and tests a theoretical model to evaluate the motivational factors behind perceived ease of use in prior e‐commerce experiences. This hierarchical model includes need for arousal as the independent variable; general self‐efficacy, technological innovativeness, and consumer self‐determination as the mediating variables; and perceived ease of use in prior e‐commerce experiences as the dependent variable. Tested by data generated from a survey of 290 consumers, the model yields satisfactory fit and contributes to the literature by adding more intrinsically motivational variables to predict perceived ease of use. Practical and academic implications are also discussed. © 2010 Wiley Periodicals, Inc.     

Market integration and currency risk in Asian emerging markets

Most of the Asian emerging stock markets started to liberalize their markets in 1990s. In this paper, I examine whether those markets have become integrated with world stock market since the 1990s by estimating and testing a dynamic version of international CAPM (ICAPM) in the absence of purchasing power parity (PPP) using a parsimonious multivariate GARCH-in-Mean (MGARCH-M) approach. I also investigate to what extent the liberalization process has affected the cost of capital and price volatility for each market. The empirical results show that Philippines was segmented from the world stock market before its liberalization date, but no evidence of market segmentation is found for the other five markets (India, Korea, Malaysia, Taiwan, and Thailand) before their liberalization dates. However, all six markets have become integrated after opening up their markets to foreign investors. In addition, the estimated risk premia are lower after the liberalization, indicating that the liberalization process has reduced the cost of capital for their domestic firms. Moreover, there is no evidence of extra market volatility introduced by capital market liberalization, and on the contrary, the markets have become more stabilized through the liberalization process.     

全球大宗商品供求价格弹性分析

近两年来,全球大宗商品价格出现了巨大波动。以石油、铜、铁矿石为代表的大宗原材料商品价格连续上涨,另一类大宗产品,如钢铁、水泥、汽车、房地产等却在不同阶段出现了周期性的价格大幅波动。通过对于上述商品供求价格弹性的研究,我们发现第一类产品的供求价格弹性都比较小,但需求弹性要大于供给弹性;钢铁、水泥的需求价格弹性比较小,但供给价格弹性比较大,供给价格弹性大于需求价格弹性。而汽车、房地产的需求、供给价格弹性都比较大,同时需求弹性大于供给弹性。正是由于各类产品弹性特征,导致了上述商品的价格会因为供求关系的较小幅度的变化而产生大幅度波动。并且,钢铁、水泥、汽车、房地产等商品由于自身弹性特征,往往会引起生产和价格周期性波动,不利于整个行业和宏观经济的发展。通过实证分析,我们提出需要通过制度、政策安排,建立上述大宗商品的价格研判与稳定机制。     

Exchange Rates and Economic Recovery in the 1930s: An Extension to Asia

Scholars have found a positive relationship between the magnitude of currency depreciation and the extent of recovery from the Great Depression for Europe and Latin America. The relationship between currency depreciation and economic activity during the Great Depression for Asian economies has not yet been explored. This paper examines this topic using data from 13 Asian economies: China, India, Indonesia, Iran, Japan, Korea, Malaysia, the Philippines, Singapore, Taiwan, Thailand, Turkey, and Vietnam. We find that Asian economies responded in a similar way to currency depreciation during the Great Depression as did European and Latin American countries.     

长箭显军威--纪念抗日战争胜利60周年漫话导弹包装

导弹是国家强盛的标志，也是国家安全的保证，全世界有100多个国家装备有导弹。在纪念反法西斯战争和抗日战争胜利60周年的时候，为了世界和平，我们研究导弹包装发展史，就更具有特别重要的意义。     

Beneath the Appearance of Gentrification: Probing Local Complexities

In ‘Gentrification in Hong Kong? Epistemology vs. Ontology’ , Ley and Teo examine what they find to be the absence of identification and naming of gentrification in Hong Kong. They argue for the need to look at urban redevelopment in non‐Anglo‐American cities, those in Asia Pacific at the very least, in a different light. They query the extent to which the concept of gentrification has been overly stretched to explain urban processes falling outside Anglo‐American cities. This essay is a response to their argument. It presses for further and closer examination of local complexities and greater critical‐theoretical reflection on the transferability of analytical concepts to different socio‐economic contexts. Ley and Teo have raised some important questions for serious theoretical reflection and discussion. Yet they seem to have fallen into the problematic positions that they critique. Without sufficient attention to the part played by historical and local context in shaping the urban landscape, they have wrongly associated the absence of any identification of gentrification with the hegemony of a property‐related ideology of social mobility. The unpacking of the different social and political processes and mechanisms in urban redevelopment in different stages of urban growth in Hong Kong alerts us to the complexities of the local.