Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Related questions
Question
I need help figuring out what i need to include in my python code for the Simulation Statistics part?
Transcribed Image Text:Given inputs a, 6, 7, 8, ko, uo, nas:
1.5
.001
.05
2.5
100
2
10
The program outputs
==> Bull Kelp and Purple Urchin Population Simulator <==
- Model Parameters
Kelp growth rate:
Kelp death rate:
Urchin birth rate:
Urchin death rate:
Initial Population
Kelp population (in thousands) at t = 0:
Urchin population (in thousands) at t = 0:
- Simulation ---
Timescale:
Time t = 0: 100.000k kelp, 2.000k urchins
Time t = 1: 249.800k kelp, 7.000k urchins
Time t = 2:
Time t = 3:
Time t = 4:
Time t = 5:
---
622.751k kelp, 76.930k urchins
1508.970k kelp, 2280.018k urchins
331.946k kelp, 168603.957k urchins
0.000k kelp, 2545463.659k urchins
0.000k kelp, 0.000k urchins
Time t = 6:
Time t = 7:
0.000k kelp, 0.000k urchins
Time t = 8:
0.000k kelp, 0.000k urchins
Time t = 9: 0.000k kelp, 0.000k urchins
Time t = 10: 0.000k kelp, 0.000k urchins
---
Simulation Statistics
Average kelp population: 255.770k
Average urchin population: 246948.506k
---
Min kelp population was 0.000k at t=5.000
Max urchin population was 2545463.659k at t-5.000
Transcribed Image Text:1 print('==> Bull Kelp and Purple Urchin Population Simulator <==\n')
2 print('- Model Parameters ---')
a float(input ("Kelp growth rate: \n"))
if a<0:
print("Error: cannot have a negative growth rate")
exit()
b =float(input("Kelp death rate: \n"))
8 if b<0:
9
10
11 c =float
12 if c<0:
13
14
4
5
6
16
17
18
19 ko
29
30
31
print("Error: cannot have a negative death rate")
exit()
ko = max(0, float(input()))
20 u0= max(0, float(input()))
21
k =k0
33
34
35
22
u =u0
23 print( \n--- Initial Population ---')
24 print (f"Kelp population (in thousands) at t = 0: ")
25 print (f"Urchin population (in thousands) at t = 0: \n")
26
27 print('--- Simulation ---')
m m m
print("Error:
exit()
36
(input("Urchin birth rate: \n"))
print("Error: cannot have a negative birth rate")
exit()
d =float (input ("Urchin death rate: \n"))
if d<0:
37
cannot have a negative death rate")
n = int(input("Timescale: \n"))
if n < 0:
print("Error: cannot have a negative timescale ")
exit()
for t in range (n+1): # 0, 1
print (f"Time t = {t}: {k:.3f}k kelp, {u:.3f}k urchins")
k_next = max(0, k + a*k - b*k*u)
u_next
max (0, u + c*k*u - d*u)
k = k_next
u = u next
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 4 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- For debugging, there are benefits and drawbacks to using print statements and manual walkthroughs. Discuss.arrow_forwardSay we are about to build an ArrayList. Your ArrayList should guarantee that the array capacity is at most four times the number of elements. What would you like to do to maintain such a limit on the capacity? What is the benefit of using iterators? Can you describe your first experience of GUIs? And could you describe what is the advantage of using GUIs over Command-Line Interface (CLI) operations?arrow_forwardComplete documentation and a Java implementation are needed. Make some kind of code that embeds your name in a red circle with a blue border.arrow_forward
- Programming language is C. I would really be appriciate if you could help me with this. Please provide me with your cashapp, so I can tip you for your work. THANK YOU:) In this project, we shall simulate the operations of an ATM machine. Suppose you’re in charge of this simulation and here is a scenario of what is required to do: The customer will be assigned a random or fixed number for his/her balance. First, the customer is prompted to enter his personal identification number pin (for this case study, we test only if this pin is formed by 4 digits! otherwise, a message like “Invalid PIN, try again . . .” will be displayed) and the user is re-prompted to enter the pin. The customer is given three chances to enter his pin. If he/she fails during the three trials you display a message like “Sorry you can’t continue, contact your bank for assistance!” If the pin is correct (formed by 4 digits), then the system will ask the customer for the receipt ( 1 for YES and 2 for NO ) and a menu…arrow_forwardI can't import any extra modules, so the question should be answered using only the import math. I can't add that statistics one. So, can you please make that change?arrow_forwardI would like to get a fresh and brand new code for the following scenario (attached as an image). it would be great if you can add comments in your code saying why you have taken those particular algorithms.arrow_forward
- I want to do the set and get methods for a baseball game scores. But I don't even know where to start. How do I do this?arrow_forwardWhat constant names are defined in the java.lang.Math class?arrow_forwardCreate a two-players tic-tac-toe game in Java. And Draw Stepwise refinement chart, IPO chart, and Flowchart for that program.arrow_forward
- Use Python Codehow to filter dataframes using python . For example I have a student grade csv table, first, I need to read the csv using pandas library then I want to visualize my student scores (using matplotlib, seaborn, etc) but I only want to visualize those whose scores are 60 and above. so how do i do the code in python.Exampe of Student grades table (csv) : Student name Score Jojo 90 Lili 65 Bibi 50 Sarah 40 Rajah 100 Albert 80 Cherry 75 Jamie 85 So , based on the table above, what doesn't need to be visualized is Bibi and Sarah . Hope you can help me :)arrow_forwardHow would I go about writing the code to get the data that's in the databases that my class has? This is in the program RStudio. Any help would be appreashed. We have these packages# Now let's install a few packages for the Introduction to R lectureinstall.packages(c("dplyr", "e1071", "reshape2", "ggplot2", "zoo"))arrow_forwardi would like help in JAVA using eclipse software. code with comments would be wonderful. thanksarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill Education
Starting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSON
Digital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON 
C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSON
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Programmable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education