Influence of relative compaction on the hydraulic conductivity of completely decomposed granite in Hong Kong

2009 ◽  
Vol 46 (10) ◽  
pp. 1229-1235 ◽  
Author(s):  
Jian-Hua Yin

The relative compaction (RC) parameter is commonly used for assessment of the degree of compaction of existing fill slopes and (or) for the design and construction of new fill slopes. This technical note presents the results of an experimental study on the relationship of RC with the saturated hydraulic conductivity (ksat) of typical completely decomposed granite (CDG) in Hong Kong. The results are interpreted and discussed. Useful correlations of RC versus ksat and void ratio (e) versus ksat are obtained. It is found that the RC has a significant influence on ksat of CDG. The influence of RC is equivalent to the influence of e on ksat of the soil.

1999 ◽  
Vol 02 (03) ◽  
pp. 285-292 ◽  
Author(s):  
JING CHEN

There has been constant debate about the predictability of the security markets. We examine the relationship between the prices of a stock and its convertible bond during the Hong Kong stock market bubble of 1997 and its subsequent crash. We find that the price behavior of the share and the convertible bond not only gave a clear signal of the market reversal, but also the minimum range of the stock price change. This example offers concrete evidence that the market becomes highly predictable at times and gives us a chance to understand the relationship of the underlying stock and its derivatives during market bubbles.


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