Peter Hovmand's Work


We found 109 items
Include in results:
#1

Campus sexual assault

A very simple, one stock, simulation of campus sexist attitudes toward rape and initimate partner vi ... Read more
A very simple, one stock, simulation of campus sexist attitudes toward rape and initimate partner violence. The model was originally developed in 1998 and later translated into Stella. The model has a number of modeling errors, but at the time, proved useful for gaining insight into the dynamics of the system and developing an innovative prevention program.
sim1,467 runs, 46 downloads
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campus sexual assault community norms
1550.01
#2

Developmental transitions and cognitive vulnerability

This is a "proof of concept" model illustrating how system dynamics can be used to develop feedback ... Read more
This is a "proof of concept" model illustrating how system dynamics can be used to develop feedback theories of developmental theories. The model focuses on understanding the dynamics of individual cognitive vulnerability from 0 to 21 years of age through a series of school transitions moderated by family support.
sim883 runs, 5 downloads
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Education psychology theory development proof of concept model
1226.8126
#3

MNH Strategic Model

Strategic model of country-level policies to reduce maternal and neonatal mortality.
sim850 runs
global health maternal survival neonatal survival
843.93335
#4

ENGR398 structure-behavior A

sim2,980 runs
759.6
#5

Fresh Produce Access Game

sim706 runs, 3 downloads
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Health food security nutrition securing program funding
668.39
#6

Human Ecological Systems (HES)

The purpose of this model is to (1) demonstrate a way to represent human development that includes i ... Read more
The purpose of this model is to (1) demonstrate a way to represent human development that includes individual resources, social networks, and spatial relationships within a single model of a formal feedback theory of development, (2) provide an approach to theory development that begins with a simple model and gradually includes more complex facets of social reality (e.g., social networks, location), and (3) illustrate its application to formally testing and comparing a theory over a wider range of assumptions that can inform the design of data collection and analysis to more accurately reflect the dynamics of human development and outcomes. The approach has a wide range of possible applications in theory development and community intervention design, research, and evaluation. Examples include school-based and community based positive youth development interventions, drug use/addiction and treatment in rural settings, community responses to domestic violence, neighborhood effects and interventions, homelessness, supports for ex-offenders released from prison or jail, and health inequities. Version 1.0 focuses on mainly working out a simple example of interactions between social networks and spatial relationships. The model (right) represents a formal theory of how people will move to be close to their nearest friend. Since friends are determined by a social network where people have different sets of friends, and people are in different locations, movement will depend on an interaction between each individual’s social network, the location of their friends, the distance to their friends, and identifying their nearest friend and comparing one’s present location to the location of one’s nearest friend. The model implements this with a random social network for 100 individuals randomly distributed in 100m by 100m coordinate space.
sim204 runs
human development social theory methodology social networks spatial relationships
660.2
#7

Physical Activity and Green Space

sim2,197 runs
556.02
#8

ENGR 398 FL23 Quiz2 loop type

sim1,480 runs
369.6
#9

Human Resiliency

Simple proof-of-concept model of human resiliency.
sim1,326 runs
332.06
#10

ENGR 398 FL23 Quiz2 dominant loops

sim1,294 runs
321.24
#11

ENGR389FL23-extra credit

sim1,287 runs
319.42
#12
diagram1,190 downloads
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304.2
#13

transfusions

diagram1,154 downloads
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294.84
#14

SDDL1

model1,090 downloads
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283.4
#15

School

model991 downloads
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257.66
#16

ENGR 398 FL23 Quiz2 Loop Scores

sim1,038 runs
254.68
#17

LTM pratice - epidemic

sim884 runs
214.64
#18

LTM pratice - no epidemic

sim881 runs
213.86
#19

USC295cSP22

sim869 runs
Education
210.74
#20

LTM pratice - endemic

sim843 runs
203.98
#21

HEI demo

sim752 runs, 1 download
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185.12
#22
diagram704 downloads
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177.84
#23

ROOSCLD3

diagram699 downloads
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176.54
#24

Org culture v1

diagram686 downloads
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173.16
#25

LP CLD

diagram655 downloads
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165.1
#26

Demo 1

diagram641 downloads
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161.46
#27

LB CLD

diagram634 downloads
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159.64
#28

Specialism

diagram634 downloads
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159.64
#29

DW v1

diagram616 downloads
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154.96
#30

Telescope Time

model593 downloads
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154.18
#31

DW v2

diagram611 downloads
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153.66
#32

Generalism

diagram611 downloads
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153.66
#33

housing practice

diagram604 downloads
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151.84
#34

chicken and egg SFD example

model578 downloads
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150.28
#35

Fit statistics

The model illustrates how various statistics to measure and assess fit perform relative to source of ... Read more
The model illustrates how various statistics to measure and assess fit perform relative to source of measurement error.
sim90 runs, 143 downloads
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Fit statistics Theil inequality
148.43033
#36

Housing demo 2

diagram590 downloads
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148.2
#37

ENGR398Quiz4LoopScores

sim627 runs
147.82
#38

Chicken and egg demo

diagram588 downloads
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147.68
#39

USSY demo

model534 downloads
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138.84
#40

USSY demo cld

diagram539 downloads
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134.94
#41

USSY demo CLD 2

diagram535 downloads
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133.9
#42

USY295c

model504 downloads
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131.04
#43

SCORE

The Systems Change for Racial Equity strategic model simulates the the impact cross sector innovatio ... Read more
The Systems Change for Racial Equity strategic model simulates the the impact cross sector innovations to eliminate racism as a cause of health disparities.
sim520 runs
127.9
#44

test cld 3

diagram462 downloads
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114.92
#45

test1010

diagram456 downloads
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113.36
#46

American Samoa Draft CLD

diagram424 downloads
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105.04
#47

Developmental-transitions

sim399 runs
88.54
#48

ENGR 398 AI in undergrad education v0

diagram341 downloads
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83.46
#49

Greenspace and Physical Activity

sim448 runs
Environment Education Health
82.62
#50

USSY 295c SIR Exercise

sim374 runs
82.04
#51

LTM practice - L4

sim342 runs
73.72
#52

Homelessness

sim338 runs
72.68
#53

LTM practice - L5

sim324 runs
69.04
#54

Structure-behavior relationship

sim93 runs, 1 download
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methodology loop impact loop scores limits to growth
65.04
#55

LTM practice - L2

sim290 runs
60.2
#56

LTM practice - L1

sim281 runs
57.86
#57

LTM practice - L3

sim270 runs
55
#58

BETTr

sim234 runs
45.64
#59

PRC-screening

sim217 runs
41.22
#60

Access to Fresh Produce

Access to fresh produce concept model for a neighborhood with three types of interventions that can ... Read more
Access to fresh produce concept model for a neighborhood with three types of interventions that can be varied by their effect size and duration.
sim46 runs
Education Health food systems proof of concept
37.513332
#61

ENGR398 structure-behavior B

sim152 runs
24.32
#62
Coupled Natural Human (CNH) systems demonstration.
sim138 runs
23.23
#63

LTM pratice

sim125 runs
17.3
#64
Prototype simulation model for emergency medicine training
sim52 runs
emergency medicine training
15.542666
#65

Wellbeing Demo

sim112 runs
13.92
#66

BioscienceFaculty

sim108 runs
12.88
#67

CHL Regional Food System Demo

Demonstration of a running simulation and interface for the CHL Food System study.
sim85 runs
11.05
#68

Exercise - accumulation

sim98 runs
10.28
#69

coflow demo

sim73 runs, 1 download
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8.84
#70

Org Culture

sim82 runs
6.12
#71

NEF 2

sim81 runs
5.86
#72

Green Space CLD

diagram25 downloads
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1.3
#73

Participation in Social Movements

Simple model of participation in social movements created during the 2018 Changing Systems High Scho ... Read more
Simple model of participation in social movements created during the 2018 Changing Systems High School Fellows training at the Brown School's Social System Design Lab, Washington University in St. Louis. Sponsored by SkipNV.
sim15 runs
Education
-0.72
#74

SD-EPI

The purpose of this model is to provide a crosswalk between system dynamics model paremeters and epi ... Read more
The purpose of this model is to provide a crosswalk between system dynamics model paremeters and epidemiology
sim9 runs
Download Model
-2.61
#75

E3CD for Soc of Toxicology Demo (Beta)

sim41 runs
-4.54
#76

IHN demo

sim41 runs
-4.54
#77

Explanations of Adoption from a Feedback Perspective

sim37 runs
-5.58
#78

Services concept model

sim36 runs
-5.84
#79

NEF prototype

sim28 runs
-7.92
#80

Maternal Health Game

sim23 runs
-9.22
#81

USSY295c limits to growth exercise

sim21 runs
-9.74
#82

City model demo

sim18 runs
-10.52
#83

Resilency (mobile version)

sim16 runs
-11.04
#84

turnover-demo

sim11 runs
-12.34
#85

Center Model

sim10 runs
-12.6
#86

CHI 2

sim9 runs
-12.86
#87

Treatment model demo

sim9 runs
-12.86
#88

Demo for PQHS 419

sim9 runs
-12.86
#89

Community Health Game

sim9 runs
-12.86
#90

MyTest

sim5 runs
-13.9
#91

ENGR 398 FL23 Quiz2

sim5 runs
-13.9
#92

Multiplayer Demo

sim4 runs
-14.16
#93
sim4 runs
-14.16
#94

GIS demo

sim3 runs
-14.42
#95

Demo for PolicyBridge

sim3 runs
-14.42
#96

TestForms

sim2 runs
-14.68
#97

Treatment demo

sim2 runs
-14.68
#98

ENGR398Quiz4

sim
-15.2
#99

In class demo

sim
-15.2
#100

ENGR398-Nov 21, 2023

sim
-15.2
#101

ASAPCAN workshop

sim
-15.2
#102

ENGR398-quiz 3

sim
-15.2
#103

CHL demo

sim
-15.2
#104

GreenSpace

sim
-15.2
#105

CAN CLD

sim
-15.2
#106

LPG CLD without labels

sim
-15.2
#107

Workforce-quiz1

sim
-15.2
#108

Lead CLD

sim
-15.2
#109

SASS-500 example

sim
-15.2
X

Uploading a Bundle from Zip

Instead of creating bundles, categories, and assemblies one by one, you can upload a single zip file that contains all of your bundle's content. To create your zipped bundle, make a folder with your bundle's name and add subfolders with your categories' names. The folder tree should have the same structure that you want the categories to have in your bundle. Place your assembly .stmx files in the appropriate category folders, then zip your bundle folder and upload it using the Upload Bundle from Zip link above.

Assemblies, Bundles, and Categories

Assemblies are self contained models that demonstrate common ways to connect together building blocks and that can be used as parts of other models. This is analogous to using prefabricated wall and roof pieces to construct a house.

Bundles are groups of assemblies with a common use or theme. For example, a Health Care bundle might contain a variety of assemblies that aid in creating health care models. When you download assemblies from the isee Exchange™, you download an entire bundle, rather than individual assemblies.

Categories are subgroups of assemblies within a bundle. For example, a Health Care bundle might contain a Funding category for assemblies related to the management of hospital funds. All assemblies must be assigned to a category—they cannot be assigned to the root of a bundle.

Assemblies, bundles, and categories can be created and uploaded to the isee Exchange™ via the options on the Manage My Assemblies page. To learn more, visit our help pages, or take our assemblies tutorial.

Sim App (Sim)

An interface that allows users to interact with a model.

Image of a sim

Sim apps allow users to interact with a model using buttons, sliders, knobs, tables, graphs, and storytelling. These interactions help users understand how parts of a system interact.

Interfaces are created by model authors in the Stella desktop software and can be uploaded to the isee Exchange™.

Model

A diagram that represents how elements in a system influence one another.

Image of a model

Models are mathematical representations of how elements in a system are connected and interact (e.g., ecosystems, organizations, supply chains). When running models on the isee Exchange™, results can be viewed in output devices like graphs and tables.

Models appear in the isee Exchange™ directory when authors upload them from the Stella® desktop software or create them with Stella Online™.

Causal Loop Diagram (CLD)

A map that represents the feedback structure of a system.

Image of a CLD

CLDs are high-level maps that represents the feedback structure of a system and easily communicate the essence of a model. They appear in the isee Exchange™ when authors upload them from the Stella desktop software or create them with Stella Online™.