Stability of Volterra systems are discusses by subpositive definite matrix, and some new criterions for Volterra systems on overall situation stability, sector stability and connection stability are acquired. These re...Stability of Volterra systems are discusses by subpositive definite matrix, and some new criterions for Volterra systems on overall situation stability, sector stability and connection stability are acquired. These results expand or improve some existing criterions.展开更多
Looking back at the developments in the past five years(2007-2012),the first is fermentation of the U.S.subprime mortgage crisis in 2007,which fused the outbreak of the international financial crisis in the following ...Looking back at the developments in the past five years(2007-2012),the first is fermentation of the U.S.subprime mortgage crisis in 2007,which fused the outbreak of the international financial crisis in the following year.The year 2008 is the year of real"turning point",on September 15th,the century-old Lehman Brothers on Wall Street closed down surprisingly and detonated the on-going financial crisis,the world then entered a展开更多
The year 2015 is a year of transition and development for the Chinese economy,it also marks a year of industrial structure adjustment in the titanium industry.Owing to investment slowdown,capacity expansion,shrinking ...The year 2015 is a year of transition and development for the Chinese economy,it also marks a year of industrial structure adjustment in the titanium industry.Owing to investment slowdown,capacity expansion,shrinking demand as well as structural surplus of titanium products,prices of titanium products remained at low level.Titanium smelting and small&medium展开更多
基金Supported by the Natural Sciences Research Foundation of Department of Education of Jiangsu Province(03KJD110088,05KJD110058)
文摘Stability of Volterra systems are discusses by subpositive definite matrix, and some new criterions for Volterra systems on overall situation stability, sector stability and connection stability are acquired. These results expand or improve some existing criterions.
文摘Looking back at the developments in the past five years(2007-2012),the first is fermentation of the U.S.subprime mortgage crisis in 2007,which fused the outbreak of the international financial crisis in the following year.The year 2008 is the year of real"turning point",on September 15th,the century-old Lehman Brothers on Wall Street closed down surprisingly and detonated the on-going financial crisis,the world then entered a
文摘The year 2015 is a year of transition and development for the Chinese economy,it also marks a year of industrial structure adjustment in the titanium industry.Owing to investment slowdown,capacity expansion,shrinking demand as well as structural surplus of titanium products,prices of titanium products remained at low level.Titanium smelting and small&medium
