isee systems's Work

We found 40 items

#1 - College Loans

by isee systems - 11069 runs - 218 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.

#2 - Zombie Apocalypse

by isee systems - 6404 runs - 41 downloads
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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!

#3 - Vacation

by isee systems - 4724 runs - 40 downloads
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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?

#4 - The Power of The Missing Middle

by isee systems - 1474 runs - 32 downloads
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Systems Thinking at Large takes a closer look at the suprising win for Trump. Focusing on the missing middle population and their possible power in the voting booth.

#5 - Humanitarian Aid

by isee systems - 978 runs - 45 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

#6 - Headcount Strategy

by isee systems - 867 runs - 102 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.

#7 - Guns At School

by isee systems - 4585 runs

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.

#8 - Housing Supply and Demand

by isee systems - 758 runs - 99 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?

#9 - Dairy Cows

by isee systems - 464 downloads

Agriculture offers many modeling opportunities. In this Systems in Focus, we look at the life cycle of a dairy herd, including milk production. This model could be used as the basis for methane production control, trade agreements about milk and how that impacts herd size, increasing production with demand, etc. Visit for more information.

#10 - Amalgamated Industries

by isee systems - 763 runs - 23 downloads
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#11 - Automation

by isee systems - 229 runs - 46 downloads
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Innovation often raises concerns about job losses, increasingly so in the past century with widespread automation and advanced artificial intelligence. Should we start to fear for our job security or will the creative potential in society maintain the labor force? Explore this model to see some of the interesting possibilities!

#12 - Business Cycle Dynamics

by isee systems - 249 runs - 37 downloads
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Business cycles are a fact of life for many industries. Market demand peaks one year only to plummet a year or two later. In this case study of a semiconductor business, Henk Akkermans, Professor of Supply Network Dynamics at Tilburg University, explores different policy options for order handling, production planning and capacity management to reduce oscillation and improve system performance.

#13 - Energy Demand Lab

by isee systems - 191 runs - 71 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.

#14 - Bricks to Clicks

by isee systems - 168 runs - 41 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!

#15 - Airport Runway Capacity

by isee systems - 163 runs - 75 downloads
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Examine the implications of an increasing number of landing airplanes on a fixed capacity runway.

#16 - Wolves and Trees

by isee systems - 16 runs - 43 downloads
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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.

#17 - Multiple Retailer Supply Chain

by isee systems - 83 runs - 70 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.

#18 - Energy (2002)

by isee systems - 13 runs - 55 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.

#19 - Customer-Employee Satisfaction

by isee systems - 117 runs - 56 downloads
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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.

#20 - Service Call Center Dynamics

by isee systems - 52 runs - 20 downloads
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One organization in the service delivery business experienced a situation where the number of delivery requests increased dramatically due to a seasonal promotion. This increase in requests caused an overload on the service delivery staff by not only having more people requesting service, but also because the amount of time spent with each customer increased. This model is designed to describe why this occurred in a way that can be transferable to other service delivery organizations.

#21 - President & Prime Minister

by isee systems - 22 runs - 5 downloads
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Whose coffee cools faster? This question quickly becomes relevant for the president and the prime minister as they travel together in a plane. Understand the cooling process. Then experiment with a cooling model.

#22 - Ski Resort Dynamics

by isee systems - 110 runs - 18 downloads
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This practice field provides a risk-free environment for exploring different capacity expansion strategies for a ski resort. Apply the insights to a wide range of process improvement efforts.

#23 - Draining structure

by isee systems - 114 downloads

Draining generic structire

#24 - Resource Allocation

by isee systems - 37 runs - 21 downloads
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One of the most challenging tasks in most organizations is the allocation of headcount between time-competing activities. In this model, you will have a chance to explore these sorts of dynamics in the context of a consulting firm, where the same headcount can be allocated to business development activities and client service delivery. You'll see the classic pattern of "Feast or Famine," or the so-called "pig in a snake," emerge.

#25 - Compounding Structure

by isee systems - 140 downloads

Compounding generic structure

#26 - External Resources Structure

by isee systems - 113 downloads

External Resources Generic Structure

#27 - Stock-adjustment

by isee systems - 184 downloads

Example of stock-adjustment model for TA Time

#28 - Rank array

by isee systems - 68 downloads

#29 - Co-Flow

by isee systems - 140 downloads

Example for TA time

#30 - Simple Balanced Scorecard

by isee systems - 61 runs - 17 downloads
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This simple model incorporates the four perspectives of the Balanced Scorecard management strategy into a dynamic whole.

#31 - School Reform

by isee systems - 297 runs

This Story of the Month reissue examines the complexities of school reform. Inspired by a major school reform effort in Philadelphia, this story explores some of the potential unintended consequences. What happens when the focus of "fixing schools" becomes increasing scores on standardized tests? The Story of the Month series was originally issued starting in May of 2001. While many things have changed since then, many of the issues remain relevant. From corporate corruption, to terrorism, to greenhouse gasses, each story analyzed a past headline news topic from a systems thinking perspective. These topics were modeled using STELLA or iThink with the hopes to gain perspective on the system, stimulate discussion and perhaps adjust our assumptions. isee systems has been re-releasing each Story of the Month from our archives, as originally developed, with an easy-to-access isee Sim Exchange.

#32 - Resources and Population

by isee systems - 99 downloads

#33 - resources allocation

by isee systems - 85 downloads

#34 - Population

by isee systems - 72 downloads

#35 - Identify structure

by isee systems - 72 downloads

#36 - External Resource

by isee systems - 27 runs

#37 - Compounding

by isee systems - 30 runs

#38 - Goal Seeking

by isee systems - 59 runs

#39 - Dual Flow

by isee systems - 39 runs

#40 - Draining

by isee systems - 35 runs