Journal of Shanghai University (English Edition)
Công bố khoa học tiêu biểu
* Dữ liệu chỉ mang tính chất tham khảo
Sắp xếp:
A generation pricing method with capacity bidding
Journal of Shanghai University (English Edition) - Tập 5 - Trang 345-352 - 2001
Due to historic reasons China encounters some special difficulties in ESI (electricity system industry) restructuring. An easy and simple electricity value equivalent (es-EVE) method for day-ahead pool purchase pricing of China is therefore presented in this paper. The es-EVE method is different from two-part and one-part tariffs. It is more like the UK’s method in form, but revised for China with......
Construction and analysis of structured preconditioners for block two-by-two matrices
Journal of Shanghai University (English Edition) - Tập 8 - Trang 397-405 - 2004
For the large sparse block two-by-two real nonsingular matrices, we establish a general framework of structured preconditioners through matrix transformation and matrix approximations. For the specific versions such as modified block Jacobi-type, modified block Gauss-Seidel-type, and modified block unsymmetric (symmetric) Gauss-Seidel-type preconditioners, we precisely describe their concrete expr......
Improved algorithmic mechanism based on game theory in computational grids
Journal of Shanghai University (English Edition) - Tập 11 - Trang 68-73 - 2007
Computational grids (CGs) aim to offer pervasive access to a diverse collection of geographically distributed resources owned by different self-interested agents or organizations. These agents may manipulate the resource allocation algorithm in their own benefit, and their selfish behavior may lead to severe performance degradation and poor efficiency. In this paper, game theory is introduced to s......
Generalized bipositive semidefinite solutions to a system of matrix equations
Journal of Shanghai University (English Edition) - Tập 11 - Trang 106-108 - 2007
In this paper, a system of complex matrix equations was studied. Necessary and sufficient conditions for the existence and the expression of generalized bipositive semidefinite solution to the system were given. In addition, a criterion for a matrix to be generalized bipositive semidefinite was determined.
Emissions of volatile organic compounds and carbonyl compounds from residential coal combustion in China
Journal of Shanghai University (English Edition) - Tập 14 - Trang 79-82 - 2010
Emissions of volatile organic compounds (VOCs) and carbonyls from residential coal combustion of five coals with different maturities were studied in a simulated room. The coals were burned in form of honeycomb briquettes in a domestic coal stove, one of the most common fuel/stove combinations in China. Through a dilution system, VOCs and carbonyls samples were collected by canisters and silica-ge......
Chemical treatment of carbon nanotubes as electrodes in electrochemical double-layer capacitors
Journal of Shanghai University (English Edition) - Tập 9 - Trang 557-560 - 2005
Multi-walled carbon nanotubes with homogeneous diameters (40–60 ran), produced by chemical vapor deposition of hydrocarbon gas, are purified by nitric acids. Infrared and Raman studies indicate that oxygen containing surface groups, which are predominately carboxylic, phenolic and lactonic groups, are introduced into purified carbon nanotubes. Then three kinds of block-form porous tablets of carbo......
Ant colony algorithm based on genetic method for continuous optimization problem
Journal of Shanghai University (English Edition) - Tập 11 - Trang 597-602 - 2007
A new algorithm is presented by using the ant colony algorithm based on genetic method (ACG) to solve the continuous optimization problem. Each component has a seed set. The seed in the set has the value of component, trail information and fitness. The ant chooses a seed from the seed set with the possibility determined by trail information and fitness of the seed. The genetic method is used to fo......
An internet key exchange protocol based on public key infrastructure
Journal of Shanghai University (English Edition) - - 2004
Internet key exchange (IKE) is an automated key exchange mechanism that is used to facilitate the transfer of IPSec security associations (SAs). Public key infrastructure (PKI) is considered as a key element for providing security to new distributed communication networks and services. In this paper, we concentrate on the properties of the protocol of Phase 1 IKE. After investigating IKE protocol ......
Algorithm of brush short-circuit coefficients of DC machines for extremely low speed drives
Journal of Shanghai University (English Edition) - Tập 12 - Trang 537-541 - 2009
When a direct-current (DC) machine runs at extremely low speed or standstill, the reduction in the armature resistance and the armature flux linkage due to the short circuited coils by the brushes on the commutator should not be neglected. Taking this reduction effect into account, the average values of the reduction coefficients relate to the machine parameters in complicated forms. In this paper......
The improved PAC method for a three-phase PWM grid-connected inverter
Journal of Shanghai University (English Edition) - Tập 12 - Trang 560-564 - 2009
In this paper, a vector regulating principle of the phase and amplitude control (PAC) method for three-phase grid-connected inverters is presented. To solve the problem of heavy inrush current and slow dynamic response when system starts up, the starting voltage prediction control and the current feed-forward control are proposed and used, which improve the dynamic performance of the system in the......
Tổng số: 846
- 1
- 2
- 3
- 4
- 5
- 6
- 10