The microphysical properties of a long-lasting heavy fog event are examined based on the results from a comprehensive field campaign conducted during the winter of 2006 at Pancheng （32.2°N, 118.7°E）, Jiang...The microphysical properties of a long-lasting heavy fog event are examined based on the results from a comprehensive field campaign conducted during the winter of 2006 at Pancheng （32.2°N, 118.7°E）, Jiangsu Province, China. It is demonstrated that the key microphysical properties （liquid water content, fog droplet concentration, mean radius and standard deviation） exhibited positive correlations with one another in general, and that the 5-min-average maximum value of fog liquid water content was sometimes greater than 0.5 g m-3. Further analysis shows that the unique combination of positive correlations likely arose from the simultaneous supply of moist air and fog condensation nuclei associated with the advection of warm air, which further led to high liquid water content. High values of liquid water content and droplet concentration conspired to cause low visibility （〈50 m） for a prolonged period of about 40 h. Examination of the microphysical relationships conditioned by the corresponding autoconversion threshold functions shows that the collision-coalescence process was sometimes likely to occur, weakening the positive correlations induced by droplet activation and condensational growth. Statistical analysis shows that the observed droplet size distribution can be described well by the Gamma distribution.展开更多
[目的]探究临床护士核心自我评价、积极应对和工作投入的关系。[方法]采用核心自我评价量表、积极应对量表和工作投入量表对333名临床护士的核心自我评价、积极应对方式和工作投入水平进行调查。[结果]临床护士核心自我评价得分为(3.64&...[目的]探究临床护士核心自我评价、积极应对和工作投入的关系。[方法]采用核心自我评价量表、积极应对量表和工作投入量表对333名临床护士的核心自我评价、积极应对方式和工作投入水平进行调查。[结果]临床护士核心自我评价得分为(3.64±0.52)分,积极应对得分为(1.91±0.44)分,工作投入得分为(3.50±0.49)分。相关分析表明临床护士核心自我评价、积极应对和工作投入三者间均呈正相关( P <0.05),回归分析发现护士教育程度对积极应对方式有显著的影响作用( P <0.05),在控制年龄、护龄和教育程度后,护士核心自我评价对积极应对方式具有显著影响( P <0.05),且积极应对方式在护士核心自我评价和工作投入的关系中起部分中介作用。[结论]核心自我评价作为一种积极的人格特质能够直接影响临床护士工作投入,而且通过积极应对方式对工作投入产生间接作用。展开更多
基金mainly provided by the National Natural Science Foundation of China (Grant Nos. 40537034 and 40775012)the Natural Science Fund for Universities in Jiangsu Province(Grant Nos. 06KJA17021 and 08KJA170002)+1 种基金the Meteorology Fund of the Ministry of Science and Technology [Grant No. GYHY (QX) 2007-6-26]the Qing-Lan Project for cloud-fog-precipitation-aerosol study in Jiangsu Province and the Graduate Student Innovation Plan in the Universities of Jiangsu Province (CX09B 226Z)
文摘The microphysical properties of a long-lasting heavy fog event are examined based on the results from a comprehensive field campaign conducted during the winter of 2006 at Pancheng （32.2°N, 118.7°E）, Jiangsu Province, China. It is demonstrated that the key microphysical properties （liquid water content, fog droplet concentration, mean radius and standard deviation） exhibited positive correlations with one another in general, and that the 5-min-average maximum value of fog liquid water content was sometimes greater than 0.5 g m-3. Further analysis shows that the unique combination of positive correlations likely arose from the simultaneous supply of moist air and fog condensation nuclei associated with the advection of warm air, which further led to high liquid water content. High values of liquid water content and droplet concentration conspired to cause low visibility （〈50 m） for a prolonged period of about 40 h. Examination of the microphysical relationships conditioned by the corresponding autoconversion threshold functions shows that the collision-coalescence process was sometimes likely to occur, weakening the positive correlations induced by droplet activation and condensational growth. Statistical analysis shows that the observed droplet size distribution can be described well by the Gamma distribution.
文摘[目的]探究临床护士核心自我评价、积极应对和工作投入的关系。[方法]采用核心自我评价量表、积极应对量表和工作投入量表对333名临床护士的核心自我评价、积极应对方式和工作投入水平进行调查。[结果]临床护士核心自我评价得分为(3.64±0.52)分,积极应对得分为(1.91±0.44)分,工作投入得分为(3.50±0.49)分。相关分析表明临床护士核心自我评价、积极应对和工作投入三者间均呈正相关( P <0.05),回归分析发现护士教育程度对积极应对方式有显著的影响作用( P <0.05),在控制年龄、护龄和教育程度后,护士核心自我评价对积极应对方式具有显著影响( P <0.05),且积极应对方式在护士核心自我评价和工作投入的关系中起部分中介作用。[结论]核心自我评价作为一种积极的人格特质能够直接影响临床护士工作投入,而且通过积极应对方式对工作投入产生间接作用。
