Identification of Web User Segments Based on Beliefs about Online Ads

Online advertising has been one of the fastest growing industries worldwide, due to the increased number of Internet users. From the perspective of marketing management, identifying the profile of web users who click online ads will enable designers to create better online advertising campaigns. Hence, the main objectives of this article are (1) to segment web users based on their beliefs about online ads, (2) to identify personality traits of each segment, and (3) to investigate attitudinal and behavioral differences across segments about online ads. Data were collected through an online survey and by using cluster analysis, web users were segmented into three groups based on their beliefs about online ads: “Supporters,” “Neutrals,” and “Opponents.” Personality trait differences as well as attitudinal and behavioral differences among three segments were examined and significant differences were found in terms of their personality traits, such as variety seeking, market mavenism, and innovativeness.     

Is volatility risk priced in the securities market? Evidence from S&P 500 index options

The authors examine whether volatility risk is a priced risk factor in securities returns. Zero‐beta at‐the‐money straddle returns of the S&P 500 index are used to measure volatility risk. It is demonstrated that volatility risk captures time variation in the stochastic discount factor. The results suggest that straddle returns are important conditioning variables in asset pricing, and investors use straddle returns when forming their expectations about securities returns. One interesting finding is that different classes of firms react differently to volatility risk. For example, small firms and value firms have negative and significant volatility coefficients, whereas big firms and growth firms have positive and significant volatility coefficients during high‐volatility periods, indicating that investors see these latter firms as hedges against volatile states of the economy. Overall, these findings have important implications for portfolio formation, risk management, and hedging strategies. © 2007 Wiley Periodicals, Inc. Jrl Fut Mark 27:617–642, 2007     

Climate Smart Agriculture? Assessing the Adaptation Implications in Zambia

We examine a set of potentially climate smart agricultural practices, including reduced tillage, crop rotation and legume intercropping, combined with the use of improved seeds and inorganic fertiliser, for their effects on maize yields in Zambia. We use panel data from the Rural Incomes and Livelihoods Surveys merged with a novel set of climatic variables based on geo‐referenced historical rainfall and temperature data to explore the changing effects of these practices with climatic conditions. We estimate the impacts on maize yields, and also on the exhibition of very low yields and yield shortfalls from average levels, as indicators of resilience, while controlling for household characteristics. We find that minimum soil disturbance and crop rotation have no significant impact on these yield outcomes, but that legume intercropping significantly increases yields and reduces the probability of low yields even under critical weather stress during the growing season. We also find that the average positive impacts of modern input use (seeds and fertilisers) are significantly conditioned by climatic variables. Timely access to fertiliser emerges as one of the most robust determinants of yields and their resilience. These results have policy implications for targeted interventions to improve the productivity and the resilience of smallholder agriculture in Zambia in the face of climate change.     

The degree of financial liberalization and aggregated stock-return volatility in emerging markets

In this study, we address whether the degree of financial liberalization affects the aggregated total volatility of stock returns by considering the time-varying nature of financial liberalization. We also explore channels through which the degree of financial liberalization impacts aggregated total volatility. We document a negative relation to the degree of financial liberalization after controlling for size, liquidity, country, and crisis effects, especially for small and medium-sized markets. Moreover, the degree of financial liberalization transmits its negative impact on aggregated total volatility through aggregated idiosyncratic and local volatilities. Overall, our results provide evidence in favor of the view that the broadening of the investor base due to the increasing degree of financial liberalization causes a reduction in the total volatility of stock returns.     

促进我国工业适度增长和结构升级的思路

本文将工业增长速度与产业结构升级结合起来分析，根据近两年工业增长速度与增长质量的变动关系，作者认为，在“十五”期间，国内市场需求和出口需求能够使工业增长实现９．５％－１０％的年平均增长速度，当前的政策重点应当由刺激工业增长转向促进结构调整，在保持工业适度增长的条件下，加快产业结构的升级，推动工业结构升级的基础思路：一是加快装备工业的发展，推动工业技术进步；二是加快国有经济的产业布局调整和国有企业的     

The effects of health transformation program on patient–healthcare personnel communication and interaction in Turkey

The structure of the Turkish healthcare system is being reorganized under Health Transformation Program (HTP) and some serious changes in healthcare system are being carried out. Effective healthcare personnel and patient communication has a significant impact on patients’ health behaviors and health outcomes. The purpose of this study is to examine the effect of communication dimensions and HTP on patient and healthcare personnel communication and interaction. The survey was conducted with simple random sampling to 9,089 patients in Turkey. Exploratory factor analysis showed three dimensions of communication which are in positive and strong relationship: building relationship, process of physical examination and ending communication. Hierarchical multiple regression was performed to measure the effect of communication dimensions and HTP to patient–healthcare personnel communication and interaction. According to the first step, communication dimensions have a statistically significant effect on patient–healthcare personnel communication and interaction. Introduction of HTP to hierarchical multiple regression explained additional meaningful variance in patient–healthcare personnel communication and interaction, after controlling communication dimensions. It is revealed that, HTP has an important role on communication and interaction. This study has a macro approach and it is limited with the patients’ point of view.     

Foreign Equity Trading and Average Stock‐return Volatility

We examine whether there is a relationship between foreign equity trading and average total volatility, measured as the value‐weighted average of stock‐return variance in the Istanbul Stock Exchange. We employ foreign equity purchase and sale data to track changes in foreign equity trading, which not only enable us to capture effective foreign investor participation but also to observe the potential asymmetric effects of incoming and outgoing funds on the average total volatility. Consistent with the implications of the asymmetric information hypothesis, we find that net equity flow is positively associated with average total volatility. Furthermore, we show that net equity flow affects the average total volatility through the local and idiosyncratic volatilities, suggesting that foreign investors engage in the production of firm specific and market wide information.     

The Ambiguity of Joint Asset Ownership: Cautionary Tales From Uganda and South Africa

ABSTRACT

This study uses individual-level survey data from women and men in Uganda and South Africa to examine coupled women's joint ownership of land and housing. It compares women's control over and benefits from jointly held land and housing with those of coupled women not owning land or housing at all and coupled women owning them solely. The lack of a clear and consistent advantage of joint ownership potentially arises from frequent disagreement within couples about whether the land or house is jointly owned. The study serves as a reminder of the complexities of joint ownership in practice, particularly within families, that need to be considered in order for coupled women to benefit from joint asset ownership. Efforts promoting joint ownership, for example, joint titling and marital property laws supporting joint ownership, should not only consider these complexities but also establish and communicate clear and enforceable rules for joint ownership.     

Farmers' Subjective Valuation of Subsistence Crops: The Case of Traditional Maize in Mexico

Shadow prices guide farmers' resource allocations, but for subsistence farmers who grow traditional crops they may bear little relationship with market prices. We theoretically derive shadow prices for a subsistence crop with nonmarket value, then estimate shadow prices of maize using data from a nationally representative survey of rural households in Mexico. Shadow prices are significantly higher than market prices for traditional but not improved maize varieties. They are particularly high in the indigenous areas of southern and southeastern Mexico, indicating large  de facto  incentives to maintain traditional varieties there.