In this paper,two-mode displaced excited squeezed vacuum states (TDESVS) are constructed and theirnormalization and completeness are investigated.Using the entangled state representation and Weyl ordering formof the W...In this paper,two-mode displaced excited squeezed vacuum states (TDESVS) are constructed and theirnormalization and completeness are investigated.Using the entangled state representation and Weyl ordering formof the Wigner operator,the Wigner functions of TDESVS are obtained and the variations of Wigner functions withthe parameters m,n and r are investigated.Besides,two marginal distributions of Wigner functions of TDESVS areobtained,which exhibit some entangled properties of the two-particle's system in TDESVS.展开更多
Based on the Husimi operator in pure state form introduced by Fan et al,which is a squeezed coherentstate projector,and the technique of integration within an ordered product (IWOP) of operators,as well as the entangl...Based on the Husimi operator in pure state form introduced by Fan et al,which is a squeezed coherentstate projector,and the technique of integration within an ordered product (IWOP) of operators,as well as the entangledstate representations,we obtain the Husimi functions of the excited squeezed vacuum states (ESVS) and two marginaldistributions of the Husimi functions of the ESVS.展开更多
Soilless culture in China has developed rapidly in recent years. The area of soilless culture in China was about 0.1 ha in 1985, 117 ha in 1995, but in 2002 the area reached to 865 ha. This paper introduced the brief ...Soilless culture in China has developed rapidly in recent years. The area of soilless culture in China was about 0.1 ha in 1985, 117 ha in 1995, but in 2002 the area reached to 865 ha. This paper introduced the brief history of soilless culture in China, and the main soilless culture systems. The present situation and problems are also discussed in this paper.展开更多
From the perspective of financial distortoin and using the statistics China＇s industrial enterprises between 1999 and 2007,this paper examines the relationship between corporate ownership and ROIC （return on investe...From the perspective of financial distortoin and using the statistics China＇s industrial enterprises between 1999 and 2007,this paper examines the relationship between corporate ownership and ROIC （return on invested capital）.Our empirical results suggest that SOEs have a for lower ROIC average compared to enterprises of the forms of ownership,and that private enterprises have the highest ROIC.In addition,this paper＇s numerical simulation results indicate that if financial distortion is eliminated,so that more financial resources can be redirected to private enterprises with a higher ROIC,China＇s GDP growth could be increased by 2 to 8 per cent over the current level.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.10574060Shandong Province of China under Grant No.Y2008A23Liaocheng University of China under Grant No.X071049
文摘In this paper,two-mode displaced excited squeezed vacuum states (TDESVS) are constructed and theirnormalization and completeness are investigated.Using the entangled state representation and Weyl ordering formof the Wigner operator,the Wigner functions of TDESVS are obtained and the variations of Wigner functions withthe parameters m,n and r are investigated.Besides,two marginal distributions of Wigner functions of TDESVS areobtained,which exhibit some entangled properties of the two-particle's system in TDESVS.
基金Supported by National Natural Science Foundation of China under Grant No.10574060Shandong Province of China under Grant No.Y2008A23Liaocheng University of China under Grant No.X071049
文摘Based on the Husimi operator in pure state form introduced by Fan et al,which is a squeezed coherentstate projector,and the technique of integration within an ordered product (IWOP) of operators,as well as the entangledstate representations,we obtain the Husimi functions of the excited squeezed vacuum states (ESVS) and two marginaldistributions of the Husimi functions of the ESVS.
文摘Soilless culture in China has developed rapidly in recent years. The area of soilless culture in China was about 0.1 ha in 1985, 117 ha in 1995, but in 2002 the area reached to 865 ha. This paper introduced the brief history of soilless culture in China, and the main soilless culture systems. The present situation and problems are also discussed in this paper.
文摘From the perspective of financial distortoin and using the statistics China＇s industrial enterprises between 1999 and 2007,this paper examines the relationship between corporate ownership and ROIC （return on invested capital）.Our empirical results suggest that SOEs have a for lower ROIC average compared to enterprises of the forms of ownership,and that private enterprises have the highest ROIC.In addition,this paper＇s numerical simulation results indicate that if financial distortion is eliminated,so that more financial resources can be redirected to private enterprises with a higher ROIC,China＇s GDP growth could be increased by 2 to 8 per cent over the current level.
