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Without any more explanations, I would like to draw your attention to below expressions:

1- According to my study, many engineering problems could be formulated by of basic equations of networks.

For example, the basic equations governing the pipe network hydraulics are driven from

(1) the principle of mass conservation at network junctions,

(2) the principle of energy conservation in network loops and

(3) head losses relationships.

Also, the fundamental equations governing circuit analysis are derived from (1) the principle of flow conservation at circuit nodes (called KCL),

(2) the principle of energy conservation in circuit loops (KVL), and

(3) branch equations.

Or, the static structural models of trusses usually are described by three sets of the fundamental equations. These equations include:

(1), the equilibrium equations which relate the internal member forces to the external loading;

(2), the constitutive equations that describe material behavior by stress-strain law; and

(3), the geometric equations, also known as the kinematic equations, express how the strains relate to the displacements.

Or, ....

So, it is supposed that many engineering problems could be formulated by three sets of basic equations of networks.

For all engineering problems, it can be considered two basic types of variables:

(1) current-like variables,

(2) potential-like variables.

For example, for three before mentioned fields, you may find these two kinds variables.

2- I have applied above-mentioned considerations in two engineering problems as below:

2-1- My first paper was published that was "A Graph Portioning Approach for Hydraulic Analysis-Design of Looped Pipe Networks".

2-2- The second one is "A New Methodology for Circuit Analysis with

Circuit Design Capability (Reverse Analysis)". It was published in the "Journal of Circuits, Systems, and Computers".

3- I have some idea for applying this theory for other engineering fields. As I think, it could be applied for the formulation of Time Management Knowledge (Network Scheduling) in Project Management.

In other words, I am trying to model the Scheduling Networks as AOA Networks that they are two basic variables;

(1) Time (as potential-like variable)

(2) Resources (as current-like variable)

What I mean by Resources are all resources such as staff, facilities, equipment, and even cash money. I believe in flow of Resources in AOA Networks.

Anyhow, nowadays, I am working on these topics.

4- However, I feel the "rhythm of activities" in Scheduling Networks is another issue that should be taken into account. In other words, the concept of rhythm must be considered for assigning of the Resources for the activities in the specific time intervals.