Suchergebnisse

This study investigates how monetary policies impacted China's capital (stock and bond) markets during 2010–16 by employing the dynamic conditional correlation GARCH (DCC-GARCH) model. The results indicate that both the 2013 credit crisis and the 2015 stock market crash are closely related to monetary policies. In 2013, excessive lending in the banking sector and the government's monetary policies affected the bond market. Consequently, the credit crisis occurred in the bond market and then expanded to the stock market. To solve the problem of money shortages, the government began to use traditional monetary policies and new monetary instruments to frequently release liquidity. The released liquidity quickly entered capital markets, causing an investment frenzy on the stock market, increasing risk and eventually resulting in a stock market crash. Furthermore, although the co-movement between capital markets changed over time, it would maintain positive or negative correlation for a period. Therefore, when the government implements policies in either of the markets, these policies not only affect the target market, but also impact the other market through their co-movement. (China/GIGA)

Purpose: Although the number of school-based education programs for child sexual abuse (CSA) prevention has recently increased in China, little is known about their effectiveness. This meta-analysis aimed to examine the effectiveness of school-based CSA prevention programs on improving children's knowledge and skills, which can prevent them from being sexually abused. Method: Systematic searches were conducted based on five English-language databases (PubMed, Web of Science, ScienceDirect, MEDLINE, and PsycINFO) and three Chinese databases (CNKI, Wan Fang Data, and CQVIP). Seven studies with 2,593 participants finally met the quality criteria of this review, and the meta-analysis was conducted using a random effect model. Results: The overall effect sizes of school-based CSA prevention education showed a significant improvement in children's knowledge ( d = 2.53, 95% CI [2.03, 3.04]) and skills ( d = 2.00, 95% CI [1.39, 2.60]). Programs instructed by researchers were more effective than those instructed by teachers, and preschoolers had a larger increase in both knowledge and skills than elementary and middle school students. Discussion: This study provides empirical evidence for further implementation of school-based CSA prevention programs, especially under the guidance of experienced researchers and conducted for students at an early age.

Particle emissions derived from construction activities have a significant impact on the local air quality, while the canyon effect with reduced natural ventilation contributes to the highest particulate pollution in urban environments. This study attempted to examine the effect of PM10 emissions derived from the construction of a rail transit system in an urban street canyon. Using a 3D computational fluid dynamic (CFD) model based on a real street canyon with different height ratios, this study formulates the impact of height ratio and wind directions on the dispersion and concentration of PM10. The results indicate that parallel flow would cause the concentration of PM10 at the end of the street canyons in all height ratios, and the trends in horizontal, vertical and lateral planes in all street canyons are similar. While in the condition of perpendicular flow, double-eddy circulations occur and lead to the concentration of PM10 in the middle part of the street canyon and leeward of backwind buildings in all height ratios. Furthermore, perpendicular flow will cause the concentration of PM10 to increase if the upwind buildings are higher than the backwind ones. This study also shows that the dispersion of PM10 is strongly associated with wind direction in and the height ratios of the street canyons. Certain measures could, therefore, be taken to prevent the impact on people in terms of the PM10 concentration and the heights of street canyons identified in this research. Potential mitigation strategies are suggested, include measurements below 4 m according to governmental regulations, dust shields, and atomized water.