Computer Science- Netlogo Test

Question 1

emergence

Answer 1

• way in which complex systems/patterns arise from a multiplicity of simple interactions
• seen in snowflakes, religion, termites, neural networks, economics, philosophy

Question 2

parallel programming

Answer 2

many calculations are carried out simultaneously

Question 3

Interface Tab- Command Center

Answer 3

• similar to interactions (bottom pane) in DrRacket
• enter command, hit enter, see immediate outcome
• pay attention to context

Question 4

Interface Tab- World

Answer 4

block square where your living entities (turtles) live

Question 5

define function with no arguments/inputs/parameters

Answer 5

to
body
end

Question 6

define function with arguments

Answer 6

to
arg1 arg2 …
body
end

Question 7

store value in memory

Answer 7

set var value

Question 8

repeat tasks

Answer 8

repeat n [
task
end

Question 9

[ ]

Answer 9

changes context and function

Question 10

slider

Answer 10

creates a global variable of the same name

Question 11

global variable

Answer 11

can be accessed by any procedure or agent (eg turtle) in the world

Question 12

heading

Answer 12

• direction the turtle is pointing at
• right click on turtle, inspect, change heading
• set heading #
• left 30 is actually set heading heading - 30

Question 13

size

Answer 13

• inspect turtle, change size

- set size #

Question 14

conditional

Answer 14

1. if BE [do this if true]

2. ifelse BE [do this if true] [do this if false]

Question 15

Context Results from count patches with [pcolor = black]

Answer 15

• observer: 1089

- patches: lists all pxcor and pycor of patches with pcolor black

Question 16

count

Answer 16

of agents in an agentset

Question 17

with

Answer 17

allows for specifying a subset of an agentset

Question 18

reporter

Answer 18

• any function that returns a value
• to-report fxnName
  report value
  end

Question 19

change species/ shape of turtle

Answer 19

set shape “…”

Question 20

generate a random on interval [a , b]

Answer 20

(random (b - a + 1) + a

Question 21

turtles and patches

Answer 21

a turtle can access the attribute variables of the patch it is standing on as if they were its own

Question 22

ask

Answer 22

ask agentset [do these tasks]

Question 23

Conway’s Game of Life

Answer 23

• world is 2-D grid of cells
• a cell may either be dead or alive
• any cell with less than 2 or more than 3 living neighbors dies
• any cell with 2 or 3 living neighbors stays alive
• any dead cell with exactly 3 living neighbors comes alive

Question 24

cellular

Answer 24

of, relating to cells

Question 25

automaton

Answer 25

robot (pl. automata)

Question 26

cellular automaton

Answer 26

- grid of cells | - initial state selected and new generations are created according to a fixed rule

Question 27

zero player game

Answer 27

- initial configuration determines outcome | - evolution is determined by its initial state, requiring no further input

Question 28

pixel

Answer 28

- picture element - each computer display is a 2-D grid - each cell is a pixel - any digital image is a collection of cells, each having a color value