This paper concentrates on studying the symmetries and a new type of conserved quantities called Mei conserved quantity. The criterions of the Mei symmetry, the Noether symmetry and the Lie symmetry are given. The con...This paper concentrates on studying the symmetries and a new type of conserved quantities called Mei conserved quantity. The criterions of the Mei symmetry, the Noether symmetry and the Lie symmetry are given. The conditions and the forms of the Mei conserved quantities deduced from these three symmetries are obtained. An example is given to illustrate the application of the result.展开更多
In this paper, we conduct research on new university education management methods based on the combination of humanized and institutionalized. Modem university education management, system management and the organic i...In this paper, we conduct research on new university education management methods based on the combination of humanized and institutionalized. Modem university education management, system management and the organic integration of humanistic care is under the new period of development, university education management to sustainable development as the main direction of the management. System and manage all exist, man and man is the subject and purpose of system and management. The construction of system, arrangement and operation shall be at the center of the reality of human and highlight the cultural characteristics of follow the characteristic of the knowledge in the differentiation and specialization.展开更多
Blue top-emitting organic light-emitting devices （TEOLEDs） are demonstrated by employing Alq3 as phase shift adjustment layer （PSAL） to increase the phase shift on reflection of the top electrode within a range, w...Blue top-emitting organic light-emitting devices （TEOLEDs） are demonstrated by employing Alq3 as phase shift adjustment layer （PSAL） to increase the phase shift on reflection of the top electrode within a range, which also improves the light out-coupling. By adjusting the thickness of P SAL, the CIEx,y of devices, which utilize 2, 7-Di-pyrenyl-9, 9-spiro-bifluorene （DPSF） as emitting layer, changes from （0.16, 0.50） to （0.18, 0.37）. The maximnum current efficiency of 7.1 cd/A is acquired under 4.5 V with an increasing luminance of 139 cd/m^2. Compared with adjusting the total thickness of organic layer, it is more beneficial for achieving blue TEOLEDs with high efficiency.展开更多
基金The project supported by the Graduate Student＇s Innovative Foundation of China University of Petroleum （East China） under Grant No. S2006-31 .
文摘This paper concentrates on studying the symmetries and a new type of conserved quantities called Mei conserved quantity. The criterions of the Mei symmetry, the Noether symmetry and the Lie symmetry are given. The conditions and the forms of the Mei conserved quantities deduced from these three symmetries are obtained. An example is given to illustrate the application of the result.
文摘In this paper, we conduct research on new university education management methods based on the combination of humanized and institutionalized. Modem university education management, system management and the organic integration of humanistic care is under the new period of development, university education management to sustainable development as the main direction of the management. System and manage all exist, man and man is the subject and purpose of system and management. The construction of system, arrangement and operation shall be at the center of the reality of human and highlight the cultural characteristics of follow the characteristic of the knowledge in the differentiation and specialization.
文摘Blue top-emitting organic light-emitting devices （TEOLEDs） are demonstrated by employing Alq3 as phase shift adjustment layer （PSAL） to increase the phase shift on reflection of the top electrode within a range, which also improves the light out-coupling. By adjusting the thickness of P SAL, the CIEx,y of devices, which utilize 2, 7-Di-pyrenyl-9, 9-spiro-bifluorene （DPSF） as emitting layer, changes from （0.16, 0.50） to （0.18, 0.37）. The maximnum current efficiency of 7.1 cd/A is acquired under 4.5 V with an increasing luminance of 139 cd/m^2. Compared with adjusting the total thickness of organic layer, it is more beneficial for achieving blue TEOLEDs with high efficiency.
