{UTF-8}
Desired workforce=
	Desired completion rate/Productivity
	~	people
	~		|

Orders=
	100 * (1 + step(0.2, 6))
	~	tasks/Month
	~	Orders step up 20% at time 6
	|

Productivity=
	10
	~	tasks/person/Month
	~		|

Backlog= INTEG (
	Orders-Completions,
		Desired backlog)
	~	tasks
	~		|

Completions=
	Productivity * Workforce
	~	tasks/Month
	~		|

Desired backlog=
	200
	~	tasks
	~		|

Desired backlog adjustment=
	(Backlog - Desired backlog)/Desired backlog adjustment time
	~	tasks/Month
	~		|

Desired backlog adjustment time=
	1
	~	months
	~		|

Desired completion rate=
	MAX(0,Desired backlog adjustment + Orders)
	~	tasks/Month
	~		|

Net hiring=
	(Desired workforce - Workforce) / Workforce adjustment time
	~	people/Month
	~		|

Workforce= INTEG (
	Net hiring,
		Desired workforce)
	~	people
	~		|

Workforce adjustment time=
	12
	~	months
	~		|

********************************************************
	.Control
********************************************************~
		Simulation Control Parameters
	|

FINAL TIME  = 80
	~	Month
	~	The final time for the simulation.
	|

INITIAL TIME  = 0
	~	Month
	~	The initial time for the simulation.
	|

SAVEPER  = 
        TIME STEP
	~	Month [0,?]
	~	The frequency with which output is stored.
	|

TIME STEP  = 0.0625
	~	Month [0,?]
	~	The time step for the simulation.
	|

\\\---/// Sketch information - do not modify anything except names
V300  Do not put anything below this section - it will be ignored
*View 1
$192-192-192,0,Comic Sans MS|14||0-0-0|0-0-0|0-0-255|-1--1--1|-1--1--1|96,96,100,0
10,1,Backlog,416,106,48,29,3,131,0,0,0,0,0,0
12,2,48,234,106,10,8,0,3,0,0,-1,0,0,0
1,3,5,1,4,0,0,22,0,0,0,-1--1--1,,1|(340,107)|
1,4,5,2,100,0,0,22,0,0,0,-1--1--1,,1|(272,107)|
11,5,48,306,107,6,8,34,3,0,0,1,0,0,0
10,6,Orders,306,128,33,13,40,3,0,0,-1,0,0,0
12,7,48,599,107,10,8,0,3,0,0,-1,0,0,0
1,8,10,7,4,0,0,22,0,0,0,-1--1--1,,1|(560,107)|
1,9,10,1,100,0,0,22,0,0,0,-1--1--1,,1|(492,107)|
11,10,48,526,107,6,8,34,3,0,0,1,0,0,0
10,11,Completions,526,128,51,13,40,3,0,0,-1,0,0,0
10,12,Workforce,639,373,52,29,3,131,0,0,0,0,0,0
1,13,12,11,1,0,0,0,0,64,0,-1--1--1,,1|(630,209)|
10,14,Productivity,636,44,51,13,8,3,0,0,0,0,0,0
1,15,14,10,0,0,0,0,0,64,0,-1--1--1,,1|(578,77)|
12,16,48,453,369,10,8,0,3,0,0,-1,0,0,0
1,17,19,12,4,0,0,22,0,0,0,-1--1--1,,1|(551,369)|
1,18,19,16,100,0,0,22,0,0,0,-1--1--1,,1|(483,369)|
11,19,48,509,369,6,8,34,3,0,0,1,0,0,0
10,20,Net hiring,509,390,43,13,40,3,0,0,-1,0,0,0
1,21,12,19,1,0,0,0,0,64,0,-1--1--1,,1|(549,324)|
10,22,Workforce adjustment time,408,468,71,24,8,3,0,0,0,0,0,0
1,23,22,20,1,0,0,0,0,64,0,-1--1--1,,1|(489,430)|
12,24,0,477,248,15,13,8,4,0,2,-1,0,0,0,0-0-0,0-0-0,|14||255-0-0
(B)
10,25,Desired completion rate,303,269,68,24,8,3,0,0,0,0,0,0
10,26,Desired workforce,342,373,46,24,8,3,0,0,0,0,0,0
1,27,25,26,1,0,0,0,0,64,0,-1--1--1,,1|(309,309)|
1,28,26,20,1,0,0,0,0,64,0,-1--1--1,,1|(429,399)|
10,29,Desired backlog,88,92,35,24,8,3,0,0,0,0,0,0
10,30,Desired backlog adjustment,181,193,71,24,8,3,0,0,0,0,0,0
1,31,1,30,1,0,0,0,0,64,0,-1--1--1,,1|(228,81)|
1,32,29,30,0,0,0,0,0,64,0,-1--1--1,,1|(129,137)|
10,33,Desired backlog adjustment time,88,287,71,24,8,3,0,0,0,0,0,0
1,34,33,30,0,0,0,0,0,64,0,-1--1--1,,1|(129,245)|
1,35,6,25,1,0,0,0,0,64,0,-1--1--1,,1|(294,187)|
1,36,30,25,1,0,0,0,0,64,0,-1--1--1,,1|(218,240)|
1,37,29,1,0,0,0,0,0,64,1,-1--1--1,,1|(238,97)|
10,38,Productivity,225,441,58,13,8,2,0,3,-1,0,0,0,128-128-128,0-0-0,|0||128-128-128
1,39,38,26,0,0,0,0,0,64,0,-1--1--1,,1|(267,416)|
1,40,26,12,0,0,0,0,0,64,1,-1--1--1,,1|(480,373)|
12,41,4915276,994,284,244,197,3,188,0,0,1,0,0,0
Backlog_Workforce_dynami
///---\\\
:GRAPH Backlog_Workforce_dynami
:TITLE Backlog Workforce dynamics
:X-DIV 8
:SCALE
:VAR Backlog
:LINE-WIDTH 2
:SCALE
:VAR Orders
:VAR Completions
:SCALE
:VAR Desired workforce
:VAR Workforce
:LINE-WIDTH 2
:L<%^E!@
1:wf bklg base.vdf
9:wf bklg base
22:$,Dollar,Dollars,$s
22:Hour,Hours
22:Month,Months
22:Person,People,Persons
22:Unit,Units
22:Week,Weeks
22:Year,Years
22:Day,Days
23:0
15:0,0,0,0,0,0
19:100,0
27:2,
34:0,
4:Time
5:Workforce
24:0
25:80
26:80