<正>“建立CEO资本”(Building CEO Capital),是国际知名的公关公司博雅公司(Burson-Marsteller)的一项研究的名称。这项从1997年开始的研究以对有影响力的商业人士的调查为基础,关注CEO及其领导的企业的声誉。最新一次的调查显示,CEO的表现同企业声誉之间的直接关联度有上升的趋势: 1997年,商业人士认定一家公司的声誉有40%依靠其CEO的个人声望,这一比例在1999年为45%,2001年为48%,到2003 年更上升到50%。
In this study, the hourly variations of the mass concentrations of PM10, SO2, NOx and O3 at three sampling sites were observed in Beijing during dust storm occurrence period in April 2000. The PM2.5 samples were simultaneously collected. By comparing the hourly variations of the pollutant concentrations before, during and after dust storm event and haze pollution episode, the variation characteristics of the mass concentrations of PM10, SO2, NOx and O3during dust storm events were presented. The results show that the mass concentration of PM10 reached 1500 μg m−3 during dust storm events on April 6 and 25, 2000, which was 5–10 times that of the non-dust weather conditions, and this period of high mass concentration of PM10 lasted for about 14 h, and then the concentration level prior to the dust event was recovered in 6-h time period. Due to the strong wind, the concentrations of SO2, NOx, NO2and O3 during dust storm period were maintained at low levels, which was significantly different from those on non-dust storm and haze pollution conditions. A lot of coarse particles as well as a very large amount of fine particles were contained in the atmospheric particulates during dust storm period, and the concentration level of PM2.5 was comparable to that during haze pollution episode. During the dust storm period, the PM2.5 concentration was approximately 230 μg m−3, accounting for 30% of the total PM10 mass concentration, was four times that of non-dust weather conditions, and the crustal elements constituted about 66.4% of the chemical composition of PM2.5 while sulfate and nitrate contributed much less, which was quite different from the chemical composition of PM2.5 primarily constituted by sulfate, nitrate and organics on haze pollution day.
English education suffered a setback during the period of 1949-1976.The two decades between1977 and 1996 saw a period of restoration,growth and development.To welcome the arrival of thenew century,English education has moved on to the third stage:the period of reform.The paper argues for the need for English education reform,summarizes the work we have been doingsince 1997,lists the problems we have encountered,and gives some suggestions in the concluding remarks.