This model with the objective of minimal daily energy loss not only includes time-separated equality and inequality constraints,but also includes time-related inequality constraints,such as action number constraints of transformers with on-load tap changer and switchable shunt capacitor banks.

In this method,action number constraint of control devices is converted into objective function,and the fitness function for the transformed multi-objective optimization problem is designed,which solves the coordination between discretization of variables and action number restriction of control devices.

By means of constructing mathematical morphology filter,the binary image composed by allelic genes of chromosome is filtered and the problem that deals with the action times of voltage regulating devices for compensation is turned into filtering problem of discrete binary image.

Aiming at the problem of the action times of switching equipment in voltage/reactive power optimization for high and medium voltage distribution networks,a real time voltage/reactive power optimization methods based on the modified particle swarm optimization is presented.

A computational model updating algorithm with the least squares under quadratic constraints is proposed.

A model updating optimization algorithm under quadratic constraints is applied to structure dynamic model updating.

An improved MOE blind multi-user detection algorithm based on RLS is proposed in order to overcome the shortcomings that the direct eigenvalue decomposition must be used and the quadratic constraint is not fulfilled in the traditional variable constraint MOE blind multi-user detection algorithm.

A reduced branch and bound approach for solving quadratic programming problem with quadratic constraints;

The paper presents a branch and reduce approach for solving nonconvex quadratic programming problems with quadratic constraints, which organically combines outer approximation method with branch and bound scheme.

The problem of non-convex quadratic program with quadratic constraints is considered.

The constitutive model considers the difference between concrete confinement effect provided by broad faces and that provided by narrow faces of the steel tube and the difference in the binding bar arrangement in different directions.

By presenting a case of externally prestressed beams with U\|shaped cross section,a section equivalent conversion method is introduced,and the design process of externally prestressed concrete structure using the method of secondary interior force under restraint are also presented.