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Articles on master planning methods
China's overall planning method
Overall planning method is a mathematical method to arrange the work process. It has a wide range of applications, not only in enterprise management and capital construction, but also in the organization and management of complex scientific research projects.
How to apply? Mainly to arrange the working procedure.
For example, I want to make a pot of tea. The situation at that time was: there was no boiled water; Wash the kettle, teapot and teacup; The fire is on fire, so is the tea. What should we do?
Method A: Wash the kettle, fill it with cold water and put it on the fire; When the water boils, wash the teapot, wash the teacup and take the tea. After the water boils, make tea.
Method b: first do some preparatory work, wash the pot, wash the teapot and teacup, and get tea; Everything is ready, pour water and boil water; Sit until the water boils, and then make tea.
Method C: Wash the kettle, fill it with cold water, put it on the fire and wait for the water to boil; After the water boiled, I hurried to find tea, washed the teapot and teacups and made tea to drink.
Which way saves time? We can see at a glance that the first method is good, but the latter two methods are useless.
This is a trivial matter, but it is an introduction that can lead to useful methods in production management.
You can't boil water without washing the kettle, so washing the kettle is the premise of boiling water. You can't make tea without boiling water, putting tea leaves and washing the teapot and teacups, so these are the prerequisites for making tea. Their relationship can be represented by the following arrow diagram: the number on the arrow axis indicates the time required for this action, for example, 15 indicates that the time from putting water into the furnace to boiling water is 15 minutes.
It can be seen at a glance from this picture that the total time of method A is 16 minutes (while methods B and C need 20 minutes). If we want to shorten working hours and improve work efficiency, we should mainly focus on boiling water, rather than catching tea and other links. At the same time, it only takes 4 minutes to wash the teapot and tea cups, and you can use the time of "waiting for the water to boil".
Yes, it seems to be nonsense, and there is nothing to talk about. It's like walking on two legs and eating one bite. Everyone understands this truth. However, there is often a situation, a slight change, you are fascinated by that situation. In the complicated technological process of modern industry, it is often not as simple as making tea. There are many tasks, hundreds of thousands or even tens of thousands of tasks. There are many complicated relationships, and there is often a situation that "everything is ready, only the east wind is needed". One or two parts were not completed, which delayed the delivery time of a complex machine. Or often because catching is not the key, you have to work three shifts overnight. After completing this link, we have to wait for the assembly of the next link.
Washing the teapot, washing the teacup, and taking the tea, first or later, has little to do with it. It is a person's job and can be combined into:
It seems that this is "making a mountain out of a molehill", but it is very necessary when there are too many work links.
What I'm talking about here is mainly time, but there are many other things in the specific production practice. It is beneficial for us to consider the problem in this way.
Of course, this method needs the concerted efforts of all of us in Qi Xin to play a more effective role under the socialist system.