Directory

The isee Directory is home to a variety of simulations published by our customers. You can search to see what is there by specifying by Title, Description, Keywords or Author. The default page lists a selection that may be of interest.

You can also log in to manage your own simulations or use Stella® Online to build models and CLDs.


We found 200 items

#1 - Lactase Enzyme Simulation with Data Analysis

by Jon Darkow - 358072 runs
Play

#2 - Photosynthesis Model

by Jon Darkow - 82297 runs
Play

#3 - Evolution and Natural Selection

by Jon Darkow - 51575 runs
Play

#4 - Information Processing and Neurophysiology Model

by Jon Darkow - 35838 runs
Play

The main dependent variable measured in the model is the membrane potential (millivolts) of two different neurons in a series. You will be able to add excitatory and inhibitory neurotransmitters, and compare how these modulate electrical impulses of the two neurons. Additionally, you will be able to compare the effects of three neurotoxins: Tetrodotoxin, botulinum toxin, and sarin nerve gas. While extremely lethal, these toxins are very instructive in understanding neurons because of the specific way the toxins act. Each toxin modifies or inhibits a specific molecule in neurons that help process and transmit information.

#5 - Lactase with Variable Sample Sizes

by Jon Darkow - 20838 runs
Play

Arrayed Lactase Model

#6 - Population dynamics of white footed mouse

by Jon Darkow - 49149 runs
Play

#7 - Lac Operon with Monod Bump

by Jon Darkow - 14065 runs
Play

#8 - Evolution of LAP Allele in Mussels

by Jon Darkow - 15372 runs
Play

#9 - Water Potential and Osmosis

by Jon Darkow - 10865 runs
Play

Factors that affect the flow across a semi-permeable membrane.

#10 - College Loans

by isee systems - 8533 runs - 96 downloads
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Each year, the cost of a college education continues to rise and more and more students must turn to student loans to complete their education. But as graduates leave college to embark on their careers, they face an almost Sisyphean struggle with student debt, forever facing an uphill battle while carrying a heavy burden, only to find they are getting nowhere! Whether you are graduating from college or just entering, we hope this model will enable you to better understand student loans and help plan for your future.

#11 - Cellular Respiration Accounting Model

by Jon Darkow - 13301 runs
Play

The purpose of the model is to understand how glucose is metabolized, and how the energy stored in its chemical bonds is transfered.

#12 - Recombination and Gene Linkage

by Jon Darkow - 11645 runs
Play

#13 - Oral Absorption

by Sara Rosenbaum - 6252 runs - 38 downloads
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This model is based on first order absoprtion in a 1-compartment model

#14 - Pharmacokinetics: An IV Injection in a 1-Compartment Model

by Sara Rosenbaum - 4601 runs - 33 downloads
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#15 - White-Eyed Genetics

by Jon Darkow - 5172 runs
Play

White-eyed is an allele that results in a fly white eyes. Wild-type variants have red eyes. The goal of this simulation is to determine the pattern of inheritance for the white-eyed phenotype. Is yellow body dominant or recessive? Sex-linked or autosomal? Complete, incomplete, or codominant?

#16 - Intravenous Infusion

by Sara Rosenbaum - 3056 runs - 9 downloads
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This model demonstrates the pharmacokinetic characteristics of constant continuous drug administration.

#17 - Photosynthesis with Variable Sample Sizes

by Jon Darkow - 3097 runs - 14 downloads
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Sample sizes of Photosynthesis stocks in an array

#18 - Apterous Genetics

by Jon Darkow - 22238 runs
Play

Apterous is an allele that results in a fly without wings. Wild-type variants have normally functioning wings. The goal of this simulation is to determine the pattern of inheritance for the apterous phenotype. Is apterous dominant or recessive? Sex-linked or autosomal? Complete, incomplete, or codominant?

#19 - Extinction Vortex

by Jon Darkow - 4617 runs
Play

#20 - Nonlinear Pharmacokinetics and Phenytoin

by Sara Rosenbaum - 2620 runs - 9 downloads
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Nonlinear or capacity limited pharmacokinetics can occur whenever a process involved in the absorption, distribution or elimination of a drug becomes saturated. This model demonstrates nonlinear elimination (metabolism) using phenytoin as the model drug. Specifically, it demonstrates how increasing doses of the drug produce disproportionate increases in the plasma concentration. It also demonstrates how the model parameters, Km and Vmax influence of the plasma concentration -time profile.

#21 - Multiple Oral Doses Pharmacokinetics

by Sara Rosenbaum - 2464 runs - 7 downloads
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Most commonly people take oral doses of a drug over an extended period. This model demonstrates the unique plasma concentration profile associated with this type of drug administration. The model assumes first-order drug absorption with no lag time. Simulations can be carried out to observe how the rate and extent of absorption (bioavailability) affect the profile.

#22 - Transformation Simulation

by Jon Darkow - 4547 runs
Play

Simulation allows students to test the transformation principle. Two major goals of the experiment are: 1. Allow users to see that supernatant from heat-killed bacteria can transform the genes of another bacterium. 2. What transforms the inheritance of the bacteria is DNA, not RNA or proteins.

#23 - Diffusion of a Spherical Cell

by Jon Darkow - 8816 runs
Play

Why are cells small? This model allows users to see how the size of a sphere affects the rate of diffusion.

#24 - macrolab

by David Wheat - 2169 runs
Play

macrolab

#25 - Mulitple Bolus Injections Pharmacokinetics

by Sara Rosenbaum - 3470 runs - 13 downloads
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This model shows the typical plasma concentration profile associated with the administration of several doses of a drug over time. It demonstrates the determinants of the fluctuation in the plasma concentrations, the accumulation of the drug over the course of therapy and the resting steady state plasma concentrations.

#26 - Pharmacokinetics: An IV Injection on a Two Compartment Model

by Sara Rosenbaum - 1761 runs - 17 downloads
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This model shows the profile of a drug after an intravenous injection when the drug displays two compartment characteristics

#27 - Macromodel

by Pervin Dadashova - 3185 runs
Play

Model for the public policy testing

#28 - Closed Loop

by Christopher Quick - 13771 runs
Play

Mininimal closed-loop model of the cardiovascular system

#29 - Steady State in Freshwater Ecosystems

by Jon Darkow - 12127 runs
Play

#30 - macrolab2017

by David Wheat - 3920 runs
Play

#31 - Urban Business Expansion

by John Hayward - 1128 runs - 54 downloads
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The business sector of the Three Stock Urban Dynamics model is examined using the Hayward/Boswell Loop Impact Method.

#32 - Evolving Bits

by Jon Darkow - 1306 runs
Play

Diversity and selection for the basis of evolution. This simple model tries to illustrate these concepts.

#33 - Evolution with Heterozygous Advantage

by Jon Darkow - 1433 runs
Play

Evolution of Populations: Genetic Drift, Natural Selection, and Mutations

#34 - Limits to Growth Archetype

by John Hayward - 1045 runs - 85 downloads
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Shifting loop dominance in a limits-to-growth archetype is examined using the Hayward/Boswell Loop Impact Method.

#35 - Guns At School

by isee systems - 3592 runs
Play

This interface explores the public policy issue of gun violence at schools. As a policymaker, you can explore different initiatives to see which are most effective at reducing this violence.

#36 - Growth Factors, Cyclins, and Cancer

by Jon Darkow - 19310 runs
Play

Explores the feedback loops that regulate the cell cycle. Model focuses on manipulating stimuli (growth factors), to stimulate the cell cycle feedback loops.

#37 - Humanitarian Aid

by isee systems - 865 runs - 6 downloads
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A look at disaster relief under uncertain local government scenarios. It looks at how long it might take to establish clean water thru flying in bottled water and constructing wells. There is also the impact on spread of disease and survival due to lack of water. Created by Mark Heffernan and George McDonnel

#38 - HPV and Adaptive Immune Response

by Jon Darkow - 3067 runs
Play

#39 - Headcount Strategy

by isee systems - 709 runs - 48 downloads
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Explore a consulting firm’s headcount strategy. Understand the relationship between growth rates, promotion times, headcount pyramid ratios, and attrition rates. This model is based on actual work that was done with a very well-known consulting company (here, code-named TWBC, Inc.). The firm's strategic goals were well-articulated, and each made sense when written down in a list on a piece of paper. However, when subjected to the more rigorous, dynamic scrutiny that an iThink modeling effort provides, the goals (as is too often the case) turned out to be in conflict with one another--stimulating actions that worked at cross-purposes. Efforts to achieve one goal drove the firm farther away from achieving the others. The subsequent analysis conducted with the model also pointed the way toward resolving the internal strategic inconsistencies and putting the firm back onto a strategically sound growth path.

#40 - Weight Loss Sim

by Corne - 925 runs
Play

This simulation gives the user the ability to specify their own current condition (weight, age, height etc.), choose their exercise regime and eating plans. The simulator then gives a projection for the user's weight for the next year (at a weekly resolution). Please take note that most of the pictures are navigation buttons to different screens, so remember to click on the pictures. I have personally used this simulator to successfully lose more than 20 kg. Hope you find this as valuable as I did. Good luck with your weight journey!

#41 - Sigmoidal Emax Model of Drug Response

by Sara Rosenbaum - 893 runs - 34 downloads
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This is the model that is most commonly used to for the time course of drug effects in man. It assumes that the response is driven by the blood or plasma concentrations of the drug. When the model parameters are known, it can be used to predict response at anytime time after any dose.

#42 - Campus sexual assault

by Peter Hovmand - 874 runs - 20 downloads
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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.

#43 - Pulmonary Edema

by Christopher Quick - 5866 runs
Play

This model predicts collection of fluid in the lungs.

#44 - The Laundry Detergent Game

by Billy Schoenberg - 707 runs - 35 downloads
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Congratulations! You've just been hired by the major grocery chain The Price Shopper as head of marketing. Your job is to turn around The Price Shopper's dismal sales of laundry detergent. The big-wigs have given you 12 months and a marketing budget of up to $10,000 per month to spend as you please. They'll decide to keep you, or send you to the cleaners based on how much profit you bring in over the year. Do you think you can make the big MONEY?

#45 - Tragedy of the commons

by Billy Schoenberg - 12 runs
Play

#46 - Tryptophan Operon: A repressible system

by Jon Darkow - 6228 runs
Play

#47 - Stella Architect B.M. Sample

by Armando Izquierdo - 419 runs - 45 downloads
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Este modelo es un primer intento de utilizar el "Business Canvas" desarrollado por Alexander Osterwalder e Yves Pigneur, para explicar su carácter sistémico mediante la simulación de un modelo de negocio genérico utilizando Stella Architect. El objetivo principal es mostrar el vínculo entre los conceptos del pensamiento sistémico y la práctica del "Systems Dynamics" con el ampliamente difundido "Business Canvas". En la narrativa utilizada para describir la construcción del diagrama "Stock & Flow", se denomina entre parentesis el tipo de componente (Stock, Flow, Converter, o Conector) correspondiente a los principales elementos del modelo de negocio. La simulación permite visualizar la naturaleza sistémica de un modelo de negocio representado mediante el "Business Canvas".

#48 - Supply and demand model

by Yaroslav Vorobiov - 482 runs - 134 downloads
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Supply and demand model

#49 - Circadian Clock in the Mouse

by Jon Darkow - 2451 runs
Play

Transcriptional Translational Feedback Loop in the Mouse

#50 - Tick Tock: The Biological Clock and Circadian Rhythm

by Jon Darkow - 739 runs
Play

Explore gene expression of the transcriptional-translational feedback loop (TTFL) of the mouse circadian rhythm.

#51 - Housing Supply and Demand

by isee systems - 405 runs - 26 downloads
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Use this learning lab to investigate the housing crisis. Play with interest rates as if you are Chairman of the Federal Reserve and see the impact on housing supply and demand. What happens when banks relax mortgage requirements and more people qualify to buy homes?

#52 - Turchin’s Metaethnic Frontier Theory of Imperial Growth

by John Hayward - 267 runs - 43 downloads
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A country builds its empire by attacking its neighbours and taking over both their land and their people. The larger the empire becomes, the more resources they have available to take further territory by force. However the further they expand, the harder they find it to keep expanding due to the geographical and organisational logistics involved. Additionally the empire finds it harder to maintain social cooperation among its people, its asabiya.

#53 - Aquatic Trophic Productivity Model

by Ryan Bellmore - 698 runs
Play

The ATP model is a dynamic food web simulation model.

#55 - Bathtub

by Anne Gallagher - 501 downloads
View

Introducing modeling through the bathtub model

#56 - Dynaville

by Valerie Gacogne - 723 runs
Play

Dynaville simule l'évolution des habitants d'un territoire à un horizon de 10 ans (ménages, déplacements...), selon différents scénarios de logements, d'emplois et d'évolution de son attractivité.

#57 - Pattern with recessive single band

by Jon Darkow - 9990 runs
Play

#58 - Extended Agrarian Society (from Dynamic Systems)

by Paul Fisher - 218 downloads
View

This model is an extension of the Simple Agrarian Society model from Dynamic Systems. The extensions are to add a CO2 cost to the industrialization, an impact of CO2 on global temperature, an impact of global temperature on drought frequency, and impact of drought on food production and an impact of global temperature on polar sea ice.

#59 - Inventory Workforce Model

by John Hayward - 277 runs - 100 downloads
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Oscillations in an Inventory Workforce model are examined using the Hayward/Boswell Loop Impact Method.

#60 - Overshoot and Collapse For ISAT 420

by Rod MacDonald - 498 runs - 11 downloads
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Simple Overshoot and Collapse Model

#61 - mse-litsim

by Lorenzo Andrade - 750 runs
Play

Modelo de Simulación de Escenarios MSE-LITSIM

#62 - Zombie Apocalypse

by isee systems - 5054 runs
Play

This is our first model in the From Imagination to Simulation series. It is a nod to the Halloween season and investigates a zombie apocalypse! Our fascination with zombies continually grows with the help of movies, TV shows, and books that give a wide range of zombie possibilities. But what are the dynamics behind a zombie epidemic? This model will specifically look at the spread of a zombie outbreak and examine some of the variables that help and hinder the rate of infection. We hope you will continue to see the benefits and versatility of Systems Thinking and enjoy our new series, From Imagination to Simulation! Continue to ponder those out-of-the-ordinary problems. They may seem unrealistic, but perhaps some of their dynamics may resonate with reality. Check out our zombie apocalypse model to see if there is any chance for human survival!

#63 - Phenology of the Karner Blue Butterfly

by Jon Darkow - 1586 runs
Play

Karner Blue butterfly is an endangered species. Habitat loss and climate change are contributing factors to the reduction in the butterflies' population sizes. Climate change can alter the timing of lifecycles. When climate change disproportionally affects the timing of life cycles of species in an ecosystem asynchrony within a food web occurs.

#64 - Indirect Effect Model 1

by Sara Rosenbaum - 431 runs - 3 downloads
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Some drugs do not directly produce the measured drug response. Instead they act upstream, and either increase or decrease the amount of the entity that directly mediates the response (response variable). Indirect effect Model I can be used for drugs that inhibit the synthesis of the response variable. An example is warfarin which inhibits the synthesis of clotting factors.

#65 - Kent CC Cohort Test

by Whole Systems Partnership - 985 runs
Play

Kent CC Test Cohort Model - Jan 18 v 1.4.2

#66 - interface-tutorial-start

by documentation - 524 downloads
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Starting model for interface building tutorial.

#67 - Abastecimento de Água

by Mariana Lago - 378 downloads
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Demanda de água gera novos investimentos em infraestrutura de abastecimento

#68 - Collins Theory of Geopolitics - Effect of War

by John Hayward - 267 runs - 26 downloads
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The spread of an empire according to the theory of Randall Collins and equations of Peter Turchin

#69 - Administration routes

by Ichie Hara - 425 runs
Play

observe three type of plasma concentration curve, and combine three of them

#70 - Model 21. Emax Model of Drug Response With an Effect Compartment

by Sara Rosenbaum - 332 runs - 6 downloads
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This model demonstrates how an effect compartment can be added to a pharmacokinetic model to accommodate a delay in drug response caused by a slow distribution of a drug to its site of action. The simulation also explains hysteresis

#71 - my new model

by Creative Learning Exchange - 267 downloads
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This model was copied from Emily Brzozowski: Educational outcomes in relation to resource allocation

#72 - Tesing Unknown Enzymes

by Jon Darkow - 917 runs
Play

#73 - Salmon Simulator

by James Pratt - 525 runs
Play

Simulation of salmon populations with harvesting using the Tucannon River (WA) as an example. Simulation accompanies the text Modeling the Environment, 2nd ed. by Andrew Ford. Used with permission.

#74 - Limited Enthusiasm Model of Church Growth

by John Hayward - 188 runs - 22 downloads
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A model of the growth of the Christian Church in periods of religious revival. The growth mechanism is similar to the spread of an infectious disease.

#75 - Le budget de la ville de Quimper

by Valerie Gacogne - 696 runs
Play

#76 - Transit Compartment of Drug Action

by Sara Rosenbaum - 250 runs - 11 downloads
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Change image Submit your own comment on the simulation. Share Comment upgrade hosting plan delete simulation Transit Compartment Model of Drug Response By Sara Rosenbaum Sim URL: https://forio.com/simulate/sarar/transit-compartment-model Sim access:Other authors can download source model Sim plan: Simulate Free Sim stats:This sim has been run 326 times. This simulation was uploaded to Forio Simulate with the isee NetSim software. More information can be found at iseesystems.com. Your Rating: 1 star2 star3 star4 star5 star Average Rating: rating(1) Click here to edit the description A delay in response to a drug can occur when it takes a long time for the drug’s initial effect to be translated into the final response (a long transduction process). The delayed response profile can be captured using a series of transit compartments.

#77 - Vacation

by isee systems - 3590 runs
Play

Do you ever feel like work is taking over your life? Burnout is generally characterized as a state of mental and physical exhaustion resulting in low productivity and de-personalization and is most likely caused by prolonged stress that does not dissipate. There are many different aspects that affect both the building and dissipation of burnout. This model focuses on workloads and vacations to see how they contribute to both your level of burnout and productivity. Use this model to ask questions about your workload and any benefits you would receive from taking a vacation. What happens when you suddenly have a bigger workload? What happens when work piles up? Does vacation increase or decrease your stress levels?

#78 - Model 27. Hematological Toxicity of Anticancer Drugs

by Sara Rosenbaum - 194 runs - 6 downloads
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This model shows the typical effect of several anticancer drugs on the number of circulating neutrophils. The drugs destroy neutrophils as they develop in the bone marrow, and its takes several days for their action to affect the circulating neutrophils. The model demonstrates how inter-individual variability in pharmacokinetics and pharmacodynamics can effect the magnitude and duration of this response.

#79 - Test LSystem

by Bernt Saxin - 560 runs
Play

Testmodell

#80 - Feebates

by James Pratt - 529 runs
Play

Model of fees and rebates for air pollution control based on differing vehicle types. Model orginally developed by Andrew Ford to accompany Modeling the Environment, 2nd Ed., Island Press (2010) . Used with permission.

#81 - Dodds Stella Modeling

by Henry Dodds - 209 downloads
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a SICK model, YEET!

#82 - Dynamic Modelling of Lionfish Invasion in the Caribbean Sea and Atlantic Ocean

by Gian Wieck - 238 runs
Play

The dynamic model shall explain the rapid diffusion of the lionfish - an invasive species - throughout the Caribbean Sea and the Atlantic Ocean. The interface contains two explanatory models - a simple diffusion model and more realistic convection model - as well as a policy game to manage the regional countermeasures of local decision makers.

#83 - SDGs Interactions, v2

by Dave Zelinka - 91 runs - 10 downloads
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This is the second version of the simulation that analyzes the interactions among the six Sustainable Development Goals (SDGs) that are the focus of the Second Annual Multi-stakeholder Forum on Science, Technology, and Innovation for the Sustainable Development Goals (STI Forum). The interface can be used to understand the trade-off due to the complex interplay among the set of six SDGs

#84 - Mammoth Game

by Johanna Lockhart - 190 downloads
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Extinction of Mammoths

#85 - Emergency Room

by Billy Schoenberg - 263 runs
Play

This simulation shows the basic dynamics of a hospital emergency room. Patients arrive, are treated and leave. You are able to control the average arrivial rate and average treatment time. This simulation was made using the 3rd party developer API embedded within Stella Architect.

#86 - Integrated Population System

by Paul Fisher
View

This model is a second extension of the Simple Agrarian model from Dynamic Systems that modifies the simple agrarian society model to include drought, industry produced CO2 and ice sheet dynamics. Primarily this is published as a test of porting form Stella 10.1 and learning how the new Stella Online operates. At some point a user interface and story will be added and the starting conditions calibrated to approximate treating Earth as an industrialized, agrarian society.

#87 - Indirect Effect Model 4

by Sara Rosenbaum - 166 runs - 3 downloads
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Some drugs do not directly produce the measured drug response. Instead they act upstream, and either increase or decrease the amount of the entity that directly mediates the response (response variable). Indirect effect Model IV can be used for drugs that stimulate the degradation of the response variable. As a result they decrease the amount of the response variable.

#88 - Product Development Simulator

by Billy Schoenberg - 626 runs
Play

The Bass Model or Bass Diffusion Model was developed by Frank Bass and it consists of a simple differential equation that describes the process of how new products get adopted in a population. The model presents a rationale of how current adopters and potential adopters of a new product interact.

#89 - Irreversible Drug Effects - Proton Pump Inhibitors

by Sara Rosenbaum - 456 runs
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Some drugs act by binding covalently to their receptors. As a result, the target is destroyed and its function returns only when it has been replaced by newly synthesized product. The target may be a protein, DNA, an enzyme, or a cell at any stage of development. This model has been applied to the action of the proton pump inhibitors, which bind to and destroy the H+,K+-ATPase pumps in the parietal cells of the gastric mucosa. Normal proton secretion is restored only when the pumps are replaced by newly synthesized functioning pumps (i.e., the usual turnover time of the system).

#90 - Model 20. DDI Drug-Drug Interactions - Pharmacodynamic

by Sara Rosenbaum - 233 downloads
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This model demonstrates the interaction between two agonists and allows the efficacy (Emax) of one to be varied

#91 - Educational Outcomes

by Emily Brzozowski - 206 downloads
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Educational outcomes in relation to resource allocation

#92 - The Dynastic Cycle

by John Hayward - 189 runs - 12 downloads
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The model of Feichtinger, Forst and Piccardi.

#93 - Diagrama causal innovacion

by Randiel - 158 downloads
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diagrama para representar el ciclo de innovacion

#94 - MNH Strategic Model

by Peter Hovmand - 718 runs
Play

Strategic model of country-level policies to reduce maternal and neonatal mortality.

#95 - Supply Chain-Collection Center of Tomato

by ernesto lagarda - 132 downloads
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The model was developed in a company of the Agri-food sector and considers the distribution link in the collection center of the Tomato Roma product for export to Rio Rico AZ, in 2017 by students of the Technological Institute of Sonora of the Department of Industrial Engineering.

#96 - Indirect Effect Model 3

by Sara Rosenbaum - 106 runs - 3 downloads
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Some drugs do not directly produce the measured drug response. Instead they act upstream, and either increase or decrease the amount of the entity that directly mediates the response (response variable). Indirect effect Model III can be used for drugs that stimulate the production of the response variable. As a result they increase the amount of the response variable.

#97 - Business Model Stella Canvas

by Armando Izquierdo - 109 runs - 25 downloads
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A sample of how Stella Architect can be used to simulate and create an interface using as reference the Business Model Canvas developed by Osterwalder & Pigneur

#98 - Mammoth

by victor melendez - 162 downloads
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feedback loop

m a m m o t h

#99 - Choosing the Future

by Peter Victor - 226 runs
Play

Users can run 3 long term scenarios for the Canadian economy featured in Managing without Growth (2nd edition) and create their own

#100 - Energy Demand Lab

by isee systems - 54 runs - 19 downloads
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This simple model explores the demand dynamics for a state's energy usage. For three sectors (residential, industrial, and agricultural) you can adjust the size of initial user base, the growth rate for the number of users, and the rate for the change in demand per user.

#101 - Multiple Intermittent Infusions Pharmacokinetics

by Sara Rosenbaum - 1287 runs
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The model shows the unique plasma concentration-time profile associated with the administration of a drug using multiple short infusions. It demonstrates the influence of the duration of the infusion and allows the user to practice the calculation of a suitable dose and dosing interval to achieve desired peak and trough plasma concentrations of a drug.

#102 - DaisyWorld

by James Pratt - 401 runs
Play

Game model of Daisyworld. Model orginally developed by Andrew Ford to accompany Modeling the Environment, 2nd Ed., Island Press (2010) . Used with permission.

#103 - MM1-2_Growing

by Creative Learning Exchange - 324 downloads
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Model Mysteries Chapter 1: Growing, Growing, Gone Model 2: Zombie Chickens

#104 - Trial

by Kirsten Gail Miaga - 149 downloads
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#105 - SanteDentaire

by Valerie Gacogne - 629 runs
Play

#106 - Demographic Fiscal Model of State

by John Hayward - 24 runs - 13 downloads
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An agrarian population can exceed its normal carrying capacity by the formation of a state that helps improve land productivity. As the population and state grow, it becomes harder for state revenue to stay ahead of expenditure. Eventually the state runs out of money and collapses, with a large drop in population numbers.

#107 - ab

by kateK - 198 downloads
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This model was copied from Anne Wong: To investigate how rate of evaporation of water is affected by different factors

#108 - qq

by kateK - 195 downloads
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This model was copied from Anne Wong: To investigate how rate of evaporation of water is affected by different factors

#109 - MM-1-1_Growing_linear

by Creative Learning Exchange - 316 downloads
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Model Mysteries Chapter 1: Growing, Growing, Gone Model 1: Zombie Chickens

#110 - The Leaky Bucket

by Larissa M. Ramos - 152 downloads
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Suppose we have a bucket sitting under a tap with water flowing into it at a constant rate. The bucket has a hole in the bottom, so water leaks out over time. The rate at which water flows out of the hole won't be constant because the water pressure at the bottom depends on the height of the water in the bucket. Therefore, if the bucket is nearly empty, only a trickle will escape, but if the bucket is full, the extra weight of the water will push the water out of the hole much faster. Also, if the hole is bigger, the water will flow out much faster. For this model, we're going to assume that the outflow rate is proportional to the volume of water in the bucket multiplied by the size of the whole: Out_flow = Volume_In_bucket * Size_of_hole

#111 - Housing Interventions to Improve Child Welfare Outcomes

by Social System Design Lab - 241 runs - 1 download
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#112 - Energy (2002)

by isee systems - 2 runs - 15 downloads
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Can Energy Prices Really Be Passed on to the Consumer? Energy literally fuels every aspect of today's economy. When energy costs increase, many businesses will increase prices thereby "passing on" the cost to consumers. This story helps to explain some of the broader reaching impacts of such a policy. This model was created by Steve Peterson.

#113 - The Leaky Bucket

by Jen Loveland-Rose - 150 downloads
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Suppose we have a bucket sitting under a tap, with water flowing into it at a constant rate. The bucket has a hole in the bottom, so water leaks out over time. The rate at which water flows out of the hole will not be constant because the water pressure at the bottom depends on the height of the water in the bucket. Therefore if the bucket is full, the extra weight of the water will push the water out of the hole faster. Also if the hole is bigger the water will flow faster. For this model, we're going to assume that the outflow rate is proportional to the volume of the water in the bucket multiplied by the size of the hole.

#114 - BacterialGrowth

by Daniel Edward McMahon - 149 downloads
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Yo listen up, here's the story About a little guy that lives in a blue world And all day and all night and everything he sees is just blue Like him, inside and outside Blue his house with a blue little window And a blue Corvette And everything is blue for him And himself and everybody around 'Cause he ain't got nobody to listen I'm blue da ba dee da ba daa Da ba dee da ba daa, da ba dee da ba daa, da ba dee da ba daa Da ba dee da ba daa, da ba dee da ba daa, da ba dee da ba daa I'm blue da ba dee da ba daa Da ba dee da ba daa, da ba dee da ba daa, da ba dee da ba daa Da ba dee da ba daa, da ba dee da ba daa, da ba dee da ba daa I have a blue house with a blue window Blue is the color of all that I wear Blue are the streets and all the trees are too I have a girlfriend and she is so blue Blue are the people here that walk around Blue like my Corvette, it's in and outside Blue are the words I say and what I think Blue are the feelings that live inside me I'm blue da ba dee da ba daa Da ba dee da ba daa, da ba dee da ba daa, da ba dee da ba daa Da ba dee da ba daa, da ba dee da ba daa, da ba dee da ba daa I'm blue da ba dee da ba daa Da ba dee da ba daa, da ba dee da ba daa, da ba dee da ba daa Da ba dee da ba daa, da ba dee da ba daa, da ba dee da ba daa I have a blue house with a blue window Blue is the color of all that I wear Blue are the streets and all the trees are too I have a girlfriend and she is so blue Blue are the people here that walk around Blue like my Corvette, it's in and outside Blue are the words I say and what I think Blue are the feelings that live inside me I'm blue da ba dee da ba daa Da ba dee da ba daa, da ba dee da ba daa, da ba dee da ba daa Da ba dee da ba daa, da ba dee da ba daa, da ba dee da ba daa I'm blue da ba dee da ba daa Da ba dee da ba daa, da ba dee da ba daa, da ba dee da ba daa Da ba dee da ba daa, da ba dee da ba daa, da ba dee da ba daa

#115 - Factors affecting the rate of evaporation of water

by Anne Wong - 208 downloads
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To investigate how rate of evaporation of water is affected by different factors

#116 - Bricks to Clicks

by isee systems - 94 runs - 11 downloads
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Experience the dynamics of making a business shift from traditional to e-commerce. Simulate different scenarios for how you’ll allocate spending on marketing versus infrastructure. You will see one of the more common dynamics in making a business shift, what Systems Thinkers refer to as the "worse before better" dynamic. If initial investments are made in the infrastructure quality rather than in marketing, total customers will actually fall for awhile. But if increasing amounts are spent on marketing (once the infrastructure is in place) then total customers will begin to explode. And the transition becomes successful!

#117 - Spread of Disease

by John Hayward - 101 runs - 48 downloads
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A simple SIR model is examined using the Hayward/Boswell Loop Impact Method.

#118 - Shane Goodwin - Carbon Levels

by Shane Goodwin - 106 downloads
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I'm doing this because I want to. Not because Deke told me to.

#119 - Stella project

by Julianne Bantayan - 204 downloads
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Simulation showing how cyber attacks have grown in various years.

#120 - ING DE LA INFORMACIÓN EMPRESARIAL

by Daniela - 215 downloads
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diagrama forrester de un parque industrial

#121 - mans not hot

by clemente - 180 downloads
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man not hot

#122 - Introduction to Systems Dynamic Modeling

by Will - 269 downloads
View

Packet provided after interview

#123 - ResiMod v.2.5

by Jai Clifford-Holmes - 424 runs
Play

ResiMod was developed by the Association for Water and Rural Development (AWARD), a South African non-profit organisation, with partners. The underlying work was funded by the United States Agency for International Development, under a USAID Southern Africa grant – RFA-674-12-000016 RESilience in the LIMpopo Basin Program (RESILIM). The RESILIM-O part of the programme is implemented by AWARD, in association with project partners.

#124 - STELLA water model

by Armelita - 178 downloads
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#125 - Crop Selection Dynamics

by Saeed Langarudi - 115 runs
Play

This model replicates dynamics of crop selection in an agricultural system in which there are two groups of farmers: upstream and downstream. Upstream farmers have immediate access to surface water but downstream farmers can use surface water that is remaining after upstream use. Both groups of farmers grow two types of crops. Crop characteristics as well as other assumptions of the model could be changed by model users. Different scenarios for water availability are also available to the users.

#126 - Dosing regimen for renal failure

by Ichie Hara - 220 runs
Play

compare plasma concentration in renal failure, plan the dosing regimen in renal failure

#127 - Airport Runway Capacity

by isee systems - 83 runs - 37 downloads
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Examine the implications of an increasing number of landing airplanes on a fixed capacity runway.

#128 - Multiple Retailer Supply Chain

by isee systems - 36 runs - 27 downloads
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Experience the dynamics of overshooting/undershooting inventory typical in the retail industry. Tour this supply chain model to understand the structure from the factory through multiple retailers to the consumer.

#129 - Population

by Billy Schoenberg - 159 downloads
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Sample population model with graph

#130 - Collins Theory of Geopolitics - Logistical Load

by John Hayward - 53 runs - 19 downloads
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The spread of an empire according to the theory of Randall Collins and equations of Peter Turchin. Includes limits to growth due the distance beween the empire's expansion zone and centre.

#131 - General Practice Advanced skill simulator

by Whole Systems Partnership - 281 runs
Play

A model to explore changing roles within the advanced skilled workforce for General Practice in the UK.

#132 - NatGas staged modeling guidance

by Michael L Deaton - 287 runs
Play

Adaptation and simplification of Naill's original Fossil2; for intro sys. dyn. course at JMU's Integrated Science and Technology Program

#133 - Leg VS Asprin

by Abbey McDonald - 109 downloads
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#134 - The Bass Diffusion Model

by Akshit Shah - 152 downloads
View

it is a model for the adoption of a new technology, Given P as the potential adopters of the new technology, and A as the actual adopters, the adoption of new technology takes place due to two process - 1) word of mouth and 2) advertising and any other external influence. the adoption rate AR from potential adopters is AR= WoM + AfA

#135 - Health Policy Management Flight Simulator

by Shamim - 1549 runs
Play

This is a basic health policy simulator that allows the user a policy lever on where to prioritise health care spending.

#136 - Grit-Affect-Performance

by Raafat - 34 downloads
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A first attempt at conceptualizing the dynamic relationship between emotions and grit and their influence on student performance in cyberlearning environments

#137 - Logistic Growth Model and the Butterfly Effect

by Jon Darkow - 597 runs
Play

Model allows users to test the starting population size (N), the carrying capacity of the population (K), and the intrinsic rate of growth (r max). Iterations are discrete, not continuous.

#138 - Marketing and Customer Segmentation

by Billy Schoenberg - 53 runs
Play

In this game you play the part of Dunkin Donuts in an established market of 1,000,000 coffee drinkers. This market is controlled only by Dunkin Donuts and Starbucks, there is no other competition. The market is segmented into 4 sub-groups: Heavy Regular, Heavy Espresso Base, Occasional Regular Occasional Espresso Base. The occasional coffee drinkers normally order a pastry (donut, cake, etc.) with their coffee more often than the the heavy coffee drinkers, but on an individual by individual basis the heavy coffee drinkers are buying more donuts each month than the occasional coffee drinkers. For this game you are concerned with selling 3 products: Regular Coffee, Espresso Base Coffee, Pastry (donuts, cakes, etc.) For each product you sell you have control over the following decisions: Process Improvement Spending, Taste Improvement Spending, Marketing, Price. Finally you can then also choose to open new stores or close existing stores.

#139 - Consumo de agua

by esteban - 117 downloads
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Este modelo es sobre cuanto nos demoramos en la ducha y cuanto estamos gastando por dia.

#140 - Carbon Cycle Model

by Henry Dodds - 199 downloads
View

Model of Carbon Cycle

#141 - Salmon Hypoxia Modeling Lab

by Ryan Bellmore - 346 runs
Play

This model simulates the influence of spawning salmon on dissolved oxygen in southeast Alaskan Rivers.

#142 - Supply Chain: Logistic Service Gas Station

by ernesto lagarda - 105 downloads
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This model was developed by Ernesto Vega and Ernesto Lagarda in 2017 for a Company AGM in Sonora Mexico

#143 - Human Ecological Systems (HES)

by Peter Hovmand - 124 runs
Play

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.

#144 - Velocidad Un Ferrari

by Patricio javier Mackay - 167 downloads
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Velocidad Un Ferrari se detiene en una luz roja. La luz se vuelve verde. El conductor pisa el acelerador y el carro sale acelerado. Él deja el pie en el acelerador. El carro acelera a 5 millas por hora cada segundo. Pregunta: ¿Qué tan rápido ira el Ferrari 16 segundos después?

#145 - leidy Montaño

by Leidy Natalia - 93 downloads
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estructuras de edades

m a t h i a s

#146 - Lav kraftforpris

by Culti Visus - 144 downloads
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lav kraftforpris

#147 - Medical Resident VS Patients

by Abbey McDonald - 117 downloads
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Who will win? The not yet doctor, or the street duo who needs medicine but in a controlled fashion? Who will go home in this TITLE FIGHT? Who will stay in the hospital

#148 - Rocket Model

by Christopher DiCarlo - 178 downloads
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Rocket Model with Wind Resistance

#149 - Romeo and Juliet-LevelB

by Creative Learning Exchange - 40 runs - 7 downloads
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Students use a simple simulation to explore "what if" questions relating to characters. They can change how characters behave to consider whether a story might have emerged differently. Note that students do not need to read the play, The Tragedy of Romeo and Juliet in order to explore the simulation.

#150 - MM2-1_Energy

by Creative Learning Exchange - 256 downloads
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Model Mysteries Chapter 2: Energy Drink Mania Model 1: Basic Model

#151 - Sustainable Zero Waste Tyre Life Cycle

by Aldrich - 41 runs
Play

About 5 million tyres are disposed of every year in New Zealand and 70 per cent end up in a landfill. These tyres occupy a considerable amount of space. Often unaccounted for after disposal, tyre dumps eventually attract rats and other contaminants which may disrupt nearby environmental ecosystems in a way such as soil pollution. The standard is such that there is a difficulty with regards to recycling tyres due to the lack of an efficient system, tools, mechanics or even a commercial product that makes use of used tyres. As a result, tyres are quickly forgotten after disposed. This is an important problem in New Zealand with disastrous longer term environmental effects if not dealt with in the next few years.

#152 - Wetland Forestland hydrology

by Sam Probert - 85 downloads
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Simulates multiple hydrological processes through a forestland and wetland on the Western Boreal Plain, Canada

#153 - Agent Based SD

by Billy Schoenberg - 111 runs
Play

With this model I model the physical locations of all individuals in real space. (X,Y location). Individuals move randomly each day so that they mix. Based on an individuals location relative to each other individuals there is a chance for a person to communicate the infection to another person. To determine if the infection is communicated we draw a random number. If the number is equal to or less then the chance of infection if the other person is the carrier then the person P contracts the infection and can then spread it through the population. What is superior about this model is that we can now EASILY model the attributes of any individuals as a stock arrayed by Individuals and the interaction of people with others as arrayed variables by Individual, Individual. For instance if we wanted to model the time that an individual has had a disease we can do that by creating a stock called time_infected and have an inflow of 1 for each day that an individual is in the infected state.

#154 - Modelo TOC

by Gabriela Silva Vizguerra - 133 downloads
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Simulación de un modelo para aumentar la capacidad de un proceso mediante la explotación de una restricción.

#155 - Gone with the Wind

by John Hayward - 35 runs - 2 downloads
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The loop impact method of Hayward/Boswell is applied to a single second order balancing loop using the narrative of the love relationship between Rhett and Scarlet from Gone with the Wind.

#156 - Tolerance- Precursor Pool Model

by Sara Rosenbaum - 253 runs
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Tolerance may be defined as a process that results in a reduction in the response to a specific drug concentration following repeated drug exposure. Tolerance could occur if an endogenous compound that plays an essential role in the response chain becomes depleted during response. This model assumes the drug stimulates the production of a response variable which becomes then becomes depleted.

#157 - Global Energy Balance and the Greenhouse Effect

by Ashley McCloud - 84 downloads
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The flows of light energy toward and away from the Earth. Energy comes in from sunlight, but some of its reflected back away from Earth, depending on the planet's albedo. The rest is absorbed by the Earth's surface and stored there. The Earth's surface gives infrared blackbody radiation according to the Stefan-Boltzmann law. A balance is reached when the inflowing solar energy exactly equals the outflowing infrared energy.

#158 - Dairy value chain development in Nicaragua

by Helene Lie - 200 runs - 1 download
Play

Dairy farmers in Matiguás, Nicaragua face feed system constraints that reduce their competitiveness. Conventional value chain analysis methods are unsuited to prioritize upgrading options. System dynamics modeling of the Matiguás dairy value chain was therefore used to quantify and analyse policy impacts. The model was constructed and tested with stakeholders in the Matiguás dairy value chain through group model building.

#159 - University Students Enrollment Growth Model

by Raafat - 20 runs
Play

In response to financial issues, the administration at an undergraduate tuition-dependent university pushed for growth in student enrollment. The faculty, who argued that the quality of education had been declining, resisted the expansion. More students also affected the use of the university’s infrastructure. By actively engaging key stakeholders, we developed a simple system dynamics model of university expansion.

#160 - Simple Global Carbon Cycle Model

by GLOBE Program - 14 runs
Play

The Global Carbon Cycle Model is a 5-box model, which includes five of the major carbon pools (atmosphere, plants, oceans, soils, and fossil fuels), and the fluxes between them. Use the Global Carbon Cycle Model to explore how carbon moves throughout the Earth system, how different pools and fluxes interact, and the impacts of human actions on the carbon cycle. Learn more at www.globe.gov (the GLOBE Program).

#161 - Global Carbon Cycle Model with Feedbacks

by GLOBE Program - 7 runs
Play

The Global Carbon Cycle Model with Feedbacks builds on the Simple Global Carbon Cycle Model by including ecosystem feedbacks as well as new parameters such as CO2 and temperature effects, more carbon pools, and marine biota. Use this model to explore how carbon moves through the Earth system, how the pools and fluxes interact, and how human actions can impact the carbon cycle. Learn more at www.globe.gov (The GLOBE Program) Use this model to explore how carbon moves through the Earth system, how the pools and fluxes interact, and how human actions can impact the carbon cycle. Learn more at www.globe.gov (The GLOBE Program)

#162 - Wolves and Trees

by isee systems - 12 runs
Play

Keystone species are defined as a plant or animal that plays a unique role in the way the ecosystem functions. But what would happen if that species were removed? What ripple effects would be caused by the absence of this species? We can examine these questions by looking at the wolf population in Yellowstone National Park. Wolves once flourished in Yellowstone and its surrounding areas. However, soon after the area was settled, misperceptions caused by fear and hatred fueled a large extermination effort of the wolves. For nearly 70 years, wolves were absent from Yellowstone. During this time, the ecosystem changed and diminished until scientists realized the value of the wolves and reintroduced them to Yellowstone. This model, built in iThink, uses storytelling to understand the dynamics of this keystone species. What animals were affected by their presence or absence. See how wolves play a part in not only population control of their prey but other animals and even plants far down the trophic levels.

#163 - Neurophysiology and Neurotoxicity

by Jon Darkow - 6834 runs
Play

The main dependent variable measured in the model is the membrane potential (millivolts) of a motor neuron and the muscle fiber it innervates. You will be able to add excitatory and inhibitory neurotransmitters, and compare how neurotransmitters modulate the electrical impulses of the motor neuron and the muscle fiber. Additionally, you will be able to compare the effects of four neurotoxins: Tetrodotoxin, botulinum toxin, sarin nerve gas, and VX. While extremely lethal, these toxins are very instructive in understanding neurons because of the specific way the toxins act. Each toxin modifies or inhibits a specific molecule in neurons that help process and transmit information.

#164 - Understanding Restrictive and Nonrestrictive Hepatic Clearance

by Sara Rosenbaum - 2034 runs
Play

Many drugs are removed from the body by metabolism in the liver. A drug's hepatic clearance is a measure of the liver's ability to metabolize a drug. This simulation demonstrates the characteristics of high extraction (nonrestrictive clearance, low extraction (restrictive clearance and intermediate clearance.

#165 - SCREI (Simulating Cod Recruitment under Environmental Influences)

by Stefan Koenigstein - 50 runs
Play

This simulation is based on the SCREI model, simulating early recruitment of the Barents Sea cod stock under ocean warming and acidification. The model is based on experimentally quantified data and calibrated to empirical cod egg production, 0-group abundance and ecological data. It allows the exploration of different climate change driver trajectories and adaptaion scenarios.

#166 - Rio Grande

by Aziz - 41 downloads
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Water resources availability in Rio Grande river basin, Western Bahia

#167 - MM5-D3_Disappeared

by Creative Learning Exchange - 248 downloads
View

Model Mysteries Chapter 5: The Disappeared Dare 3

#168 - Dynaville-English

by Valerie Gacogne - 229 runs
Play

Simulation of a territory over a 10-year time horizon (inhabitants, students, households, journeys,...) according to different housing policies, job scenarios, taking into account the territory attractiveness.

#169 - Customer-Employee Satisfaction

by isee systems - 50 runs - 12 downloads
Download Model Play

Research shows a strong correlation between employee satisfaction and customer satisfaction. Understand the correlation through this model, which illustrates the causal relationship between the two.

#170 - North Fork Watershed Livestock and Resident Model

by Rod MacDonald - 120 runs
Play

An equilibrium model of groundwater in the North Fork watershed of the Shenandoah Valley in western Virginia. The model captures annual rainfall and consumption of ground water by livestock and humans. This project was undertaken as part of ISAT 391 in the Spring of 2018 for Dr. Nash, Dr. Handly and Dr. MacDonald

#171 - EarthEnergy

by Jill Marie Derwin - 118 downloads
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#172 - aquarium nitrogen

by Mark Kamakea - 100 downloads
View

nitrogen in solution in an aquarium

#173 - MacroLab7

by David Wheat - 397 runs
Play

#174 - MNEV

by Jessi Wyatt - 54 downloads
View

#175 - Ocean Acidification

by Chris - 154 downloads
View

Ocean Acidification

#176 - d

by Dawoon113 - 122 downloads
View

This model was copied from Christopher DiCarlo: Rocket Model with Wind Resistance

#177 - Testroar

by Roar Kristiansen - 105 downloads
View

Dette er en test

#178 - MM4-1_Spreading

by Creative Learning Exchange - 232 downloads
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Model Mysteries Chapter 4: Spreading Like Crazy Base model

#179 - Terrestrial Carbon Cycle

by Ashley McCloud - 60 downloads
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The model is suppose to help, learn and investigate the flow of carbon between the atmosphere and land plants and soils through photosynthesis and respiration. The key questions we want to understand are: ● How does the plant fertilization feedback work? ● Are plants taking up a significant amount of the carbon humans are emitting? ● Can we solve the climate change problem by planting trees to take up our CO​2​?

#180 - MM1-D1_Growing

by Creative Learning Exchange - 219 downloads
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Model Mysteries Chapter 1: Growing, Growing, Gone Model 3: Zombie Chickens Dare

#181 - MM2-S3_Medicine

by Creative Learning Exchange - 226 downloads
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Model Mysteries Chapter 2: Energy Drink Mania Story 2: Medicine

#182 - Overshoot and Collapse

by John Hayward - 30 runs - 25 downloads
Download Model Play

Overshoot and collapse behaviour is examined using the Hayward/Boswell Loop Impact Method.

#183 - Urban Stream Rainfall

by Samuel Austin - 368 runs
Play

A simple example of streamflow response to rainfall and basin percent urban area.

#184 - Addition Circuit

by Devin - 98 downloads
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Simple Full-Adder

#185 - SCM

by Bernardo Paixao - 149 downloads
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Solar Cooker

#186 - MM4-D3_Spreading

by Creative Learning Exchange - 226 downloads
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Model Mysteries Chapter 4: Spreading Like Crazy Dare 3

#187 - Carrying Capacity

by Billy Schoenberg - 140 downloads
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Simple carrying capacity CLD

#188 - Agua virtudes

by Laura - 141 downloads
View

Gasto de egua en 10 dias

#189 - MIES Project, Education Proposal

by Paco Araujo - 150 runs
Play

A system dynamics toolbox for understanding education limits and its impact on the discovery of new Universes.

#190 - Juego Tanque de Agua

by Armando Izquierdo - 128 runs
Play

Ejemplo de juego con un mínimo de 2 participantes en simultáneo (máximo 3) realizado siguiendo las indicaciones del webinar "Building Multiplayer Simulations with Stella Architect" realizado por isee systems.

#191 - MM7-1_Fixit_Hatfields

by Creative Learning Exchange - 227 downloads
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Model Mysteries Chapter 7: Fix it Fun Base Model

#192 - Tolerance-Nicotine- Hypothetical Antagonist

by Sara Rosenbaum - 338 runs
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Tolerance may be defined as a process that results in a reduction in the response to a specific drug concentration following repeated drug exposure. One model for tolerance assumes that the drug produces a hypothetical metabolite that opposes its action.

#193 - PINOcho el mentirososo

by Patricio javier Mackay - 99 downloads
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Pinocho Cuando Pinocho miente su nariz se alarga 1 centímetro. Y cada vez que pinocho hace una obra buena se le disminuye 5 centímetros. Cada día pinocho miente unas 8 veces y hace una obra buena. Pregunta: Si el lunes en la mañana la nariz de pinocho mide 4cm. ¿Qué tan larga será el sábado en la noche?

#194 - Indirect Effect Model 2

by Sara Rosenbaum - 222 runs
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Some drugs do not directly produce the measured drug response. Instead they act upstream, and either increase or decrease the amount of the entity that directly mediates the response (response variable). Indirect effect Model 2 can be used for drugs that inhibit the degradation of the response variable. As a result they increase the amount of the response variable.

#195 - SEIR staged model guidance - ISAT290

by Michael L Deaton - 505 runs
Play

Model building stages with benchmark performance at each stage

#196 - Model 2. Drug Transporters

by Sara Rosenbaum - 14228 runs
Play

This simulation shows the location and functioning of the major clinically important drug transporters in the : gastrointestinal membrane; renal tubular membrane; and the membranes of the hepatocyte. Simulations demonstrate their functioning after oral and intravenous doses of a drug substrate

#197 - Fatigue_at_work

by Victor Celestino - 135 downloads
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Meta model of fatigue at work

#198 - SCM

by Oliver Cox - 143 downloads
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Solar Cooker

#199 - Immigration demographics

by Matej Vanek - 105 downloads
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Student project on Modelling and Simulation, Faculty of Incormatics, Masaryk University

#200 - MM2-S2_Sheep

by Creative Learning Exchange - 217 downloads
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Model Mysteries Chapter 2: Energy Drink Mania Story 2: Sheep