In a lake, the population of a particular fish species is about 1 million. Fish reproduce by 20% of the population each month, regardless of the season. In addition, fish die naturally after living for an average of 10 months. There are two separate companies (for example, A and B) fishing with 5 boats on the edge of this lake. According to current data, each boat catches 5000 fish per month. However, if the total number of boats caught in the lake increases, the number of fish to be caught by each boat decreases, as the boats will prevent each other from fishing. In addition, if the fish population in the lake increases, the fish caught per boat increases, and if the population decreases, the fish caught per boat decreases. As companies earn money from hunting, they want to buy new boats over time and enlarge their boat fleet. 1. If you want to model this described system with 'System Dynamics', which variables would you use? How would you classify these variables as stock, flow, and dummy variables?

In a lake, the population of a particular fish species is about 1 million. Fish reproduce by 20% of the population each month, regardless of the season. In addition, fish die naturally after living for an average of 10 months. There are two separate companies (for example, A and B) fishing with 5 boats on the edge of this lake. According to current data, each boat catches 5000 fish per month. However, if the total number of boats caught in the lake increases, the number of fish to be caught by each boat decreases, as the boats will prevent each other from fishing. In addition, if the fish population in the lake increases, the fish caught per boat increases, and if the population decreases, the fish caught per boat decreases. As companies earn money from hunting, they want to buy new boats over time and enlarge their boat fleet. 1. If you want to model this described system with 'System Dynamics', which variables would you use? How would you classify these variables as stock, flow, and dummy variables?

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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please solve all

In a lake, the population of a particular fish species is about 1 million. Fish reproduce by 20% of the
population each month, regardless of the season. In addition, fish die naturally after living for an
average of 10 months. There are two separate companies (for example, A and B) fishing with 5 boats
on the edge of this lake. According to current data, each boat catches 5000 fish per month. However,
if the total number of boats caught in the lake increases, the number of fish to be caught by each
boat decreases, as the boats will prevent each other from fishing. In addition, if the fish population in
the lake increases, the fish caught per boat increases, and if the population decreases, the fish caught
per boat decreases. As companies earn money from hunting, they want to buy new boats over time
and enlarge their boat fleet.
1. If you want to model this described system with 'System Dynamics', which variables would you
use? How would you classify these variables as stock, flow, and dummy variables?
2. Indicate the causal relationships in this system with arrows and signs.
3. Show the causality loops in this system, at least 1 negative, at least 1 positive, and at least 4 in
total, and interpret the loops.

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