To solve the problem that the order of a connection matrix is greatly increased because a large number of repeated nodes and links are resulted in when a network with voting systems is changed into a network graph, a reduced-order method was proposed.

In view of the network describing incident matrix that depicts topology connection between distribution feeder section and switches,an improved general matrix algorithm is presented.

A network describing incident matrix that depicts topology connection between distribution feeder zones and switches is introduced.

A network describing incident matrix that depicts topology connection between distribution feeder sections and switches is introduced.

calculating signal determinant by decomposingnetwork matrix is presented.

Under the conditions of a comprehensive temperature outside the room known as tz (τ) and the temperature inside the room known as t 0 , this paper derivated a formula calculating the heat amount conducted from both the single shield of wall body having inner and outer air shields and the wall body having multishields, through the use of network matrix, which enables to compute with computers.

According to the basic principles of hydromechanics and the electrical network theory, a new method named network matrix approach is presented in this paper to calculate ventilation system.

The switch matrix network composed of severals witch arrays is used to complete the automatic access between the radio channels and wire channels.

Distribution network flow calculation basedon incidence matrix squaring;

A method to establish OOPN incidence matrix for net performance analysis;

Consumable gas of compressor stations was not taken into consideration when branched gas pipeline networks flow equations were described with the incidence matrix method in the past,which would result in unavoidable deviation.