• IVIM provided diffusion as well as perfusion information • IVIM could help differential diagnosis of breast lesions • Correlations were found between perfusion-related parameters from IVIM and DCE MRI.

We find that idiosyncratic volatility forecasts using information available to traders at the time of the forecast are not related to expected returns. The positive relation documented in a number of other papers only exists when forward‐looking information is incorporated into the volatility estimate. That positive relation is driven by the realized idiosyncratic volatility component that cannot be forecasted by investors. Our findings are robust to several different empirical tests, volatility forecasting models and time periods.

Entrepreneurship is the center of economic growth process, and it is context-sensitive. We compare Mainland China and Taiwan by investigating the impact of past failure on individual entrepreneurs. Using a large amount of data from GEM (Global Entrepreneurship Monitor), a logistic regression approach was adopted and most of the major variables in models are correlated positively. We demonstrate that past failure does affect entrepreneurs' perceived capability and next enterprising activity positively in the two regions. Unlike the moderating role of culture, entrepreneurial motivation exerts a quite different impact on the relationship between past failure and entrepreneurs' future intention in the two regions. Our results provide not only theoretical implications for context-related entrepreneurial motivation, but practical suggestions for entrepreneurs and policy makers.

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Purpose The purpose of this paper is to investigate how to facilitate newcomers’ career advancement within an organization and diminish their intention to quit from the perspective of socialization. In addition, the moderating role of the type of newcomers on the relationship between socialization tactics and career advancement, and consequently, on the mediating effect of newcomers’ proactive socialization behavior, will be examined. Design/methodology/approach Longitudinal survey research was conducted in the tertiary industry in four large cities of China. Regression analysis and bootstrapping method were used to verify the hypothesized relationships. Findings Organizational socialization tactics could have positive effects on newcomers’ proactive socialization behavior and promotion prospects. And newcomers’ proactive socialization behavior partly mediates the relationship between organizational socialization tactics and their promotion prospects. The type of newcomers moderates the relationship between proactive socialization behavior and promotion prospects and also the mediation effect of proactive behavior, which says a moderated mediating effect. Practical implications Employers should put more value on college recruitment, making good use of social media tools in particular. And they should also select applicants with proactive personality traits. Finally, a series of structured orientation programs should be implemented for all newcomers. Originality/value This study contributes evidence for career advancement as one of the distal socialization outcomes, the moderating role of the type of newcomers on the relationship between socialization and career advancement, and the classification as graduates from school and experienced newcomers from other organizations holds significance to examine newcomers’ socialization.