Nonlinear Systems Flashcards

1
Q

What is the definition of a system?

A

A set of parts that are interconnected in effecting some joint outcome
Examples: Farm. Bike

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2
Q

System’s constituents

A

A set of elements and relations

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3
Q

2 fundamental types of system

A

Linear and Nonlinear

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4
Q

Linear system

A

Adheres to superpostion principals

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5
Q

What are the 2 superposition principals, and what do they outline?

A

Homogeneity: The output to a linear system is always proportional to the input
Additivity: We can add the effects of 2 system together and the result is a simple combination

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6
Q

Linear systems are called so because the results plotted on a graph results in what?

A

A staright line

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7
Q

Linear models do not accounts for systems where _______ are the main definer. What is an example of this?

A

relations

2 medicines that interact with each other

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8
Q

Linear models do not account for _____, as it takes no external feedback on how the action effects the environment

A

scale

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9
Q

We are just beginning to approach ________ _______

A

Nonlinear systems

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10
Q

_______ _______ do not adhere to the superposition principals

A

Nonlinear systems

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11
Q

Why does the Additivity Principal break down in nonlinear systems? What are some examples?

A

How we put things together matters.

Putting 2 creatures together get different interactions

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12
Q

Why does the Homogeneity Principal break down in nonlinear systems? What are some examples?

A

Fails to account if the outcome of the current state on the system would affect future states. IE Fails to account for feedback loops

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13
Q

Linear systems implies the possibility of _________ progress

A

continuous

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14
Q

What are 2 types of relations that result in non-additive combinations?

A

Synergies and Interference

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15
Q

Synergies

A

A positive interaction between 2 elements. Multiplying rather than adding an elements potentials

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16
Q

To achieve synergy

A

each elemtn must be differentiated and synchronised. Components must become different in respects to with each other

17
Q

Interference

A

A combined system that is less than the sum of it’s components

18
Q

Interfernece occurs

A

when there is a decisive lack of difeerence. results in competiion and crowding out. Like rush hour

19
Q

Destructive relations

A

have a lack of feedback, which means componets never sync up

20
Q

linear systems are

A

independant from inputs and outputs/ time

21
Q

Feedback loop

A

A channel or pathway formed by an aeffect returning to its cause, causing more of the effect

22
Q

what are 2 types of feedback loops. Define them

A

Negative: represents a relationship of constraint and balance. If one var changes in one direction, the other changes in the other. ex prices of items
Positive: Increase in one value is associated with increase in another value

23
Q

Equilibrium

A

A linear system tends towards equilibrium when there is a negative feedback loop

24
Q

And additive, negative feedback loop system has a net result of

A

zero, which is the systems equilibrium or normal state

25
Q

Exponentials

A

describes a system in which the output feeds back as input, increasing the amount that is increasing each time, like a snowball effect. The rate of growth itself is growing in nonlinear systems

26
Q

Power laws

A

Describes functional relationship between 2 quantitiesm, wehre one varies as a power of the other
Example is a cube volume

27
Q

Metcalfe’s Law/networks effect -> key driver of positive feedback

A

Everytime we add a new computer to a network, we can add links as many as computers there are.