University of Thessaloniki, Greece
School of Chemistry - Department
of Chemical Technology and Industrial Chemistry -
Lab. General & Inorganic Chemical Technology
Postgraduate courses in chemical process modeling
Georgios Gallios, Associate Professor in the Department
of Chemical Technology and Industrial Chemistry
Laboratory General and Inorganic Chemical Technology
in the School
of Chemisty at Aristotle
University of Thessaloniki, uses
ExtendSim as an aid in teaching simulation and optimization
of chemical processes in postgraduate courses.
Fairchild Tropical Botanic Garden & the National Science Foundation
Environmental education program
for middle and high schools
comprehensive middle school and high school environmental education program
coupled with support from the National Science Foundation created an ExtendSim
model simulating the effects of rainforest deforestation and agriculture
(planting pasture crops) on the amount of CO2 in the atmosphere and on
animals living in the rainforest. Hence, the Rainforest
Carbon Cycling Model was born.
Carbon Cycling Model makes a tropical rain forest come alive as carbon
from the air flows through it! Designed for users with no previous modeling
experience, this model allows users to delve into ‘What if?’ sorts
of questions about factors that limit forest production and the effects
of land-use change on carbon cycling and global warming.
Rainforest Carbon Cycling Model History
Ann Russell, Terrestrial Ecosystems Ecologist at Iowa
State University had a dream to develop a model of carbon cycling in
a tropical rain forest using ExtendSim energy language model. Using data
collected from research in a Costa Rican rainforest, Jim Dailey of Jim
Dailey & Associates transformed the data into an animated, bilingual
model for children and the general public and called it the Rainforest
Carbon Cycling Model.
The model was distributed to 45,000 children in the Miami-Dade County
school system through an outreach program organized by the Fairchild Tropical
Botanical Gardens in Coral Gables, Florida called the Fairchild
Fairfield Challenge Overview
Designed for students of diverse interests, abilities, talents and backgrounds,
the Fairchild Challenge is Fairchild Tropical Botanic Garden's environmental
education outreach program. With separate but parallel programs for different
grade levels 6 to 8 and 9 to 12, the Fairchild Challenge is composed
of multidisciplinary competitions aligned with Sunshine State Standards.
The annual Fairchild
Challenge options are intended to appeal to students' sense of play
and creativity, to encourage them to experiment with ideas, projects
and skills and to empower them to seek information and voice opinions.
This free program was originally open to all schools in the greater Miami
area. As of January 2010, 92 middle schools and 61 high schools are actively
participating in the Fairfield Challenge. Other sites are replicating
the Fairchild Challenge model nationally and abroad.
Operations Management in
the McDonough School of Business
Washington, DC USA
Benihana case study
Ricardo Ernst and Professor Glen Schmidt of Georgetown
whet their students' appetites for Operations Management by
beginning their core courses with the Benihana case study (HBS
9-673-057). Although originally written in 1972, Benihana remains
one of the most popular Harvard Business School cases. The case
captivates students because it brings operations to life in a
familiar setting; that of a teppanyaki-style restaurant.
Benihana simulation models an evening at Benihana's West 52nd
Street restaurant. In addition to emulating customer flow patterns
and dinner choices, the ExtendSim model incorporates a sensitivity
analysis feature that enables the user to examine the impact
of altering the restaurant's capacity, and the bar capacity.
The professors have published the paper Benihana:
A New Look at an Old Classic.
||George Washington University
Statistical Quality Control
Washington, DC USA
Statistical Quality Control
Harris, D.Sc. teaches a class in Statistical Quality Control in the Engineering
Management and Systems Engineering Department at The George Washington
University. In the Spring of 2010 class, students were
asked use ExtendSim LT to develop a simulation of a manufacturing process
and perform quality control processes as part of the model. There were
two additional challenges for the students in using ExtendSim LT for this
The curriculum at GWU offers a modeling
and simulation class using Arena from Rockwell Automation, so
most students are trained in the use of simulation tools. Part
of the challenge to this project is that students use a modeling
tool they are not familiar with to broaden their modeling experience.
||Models must be relatively small as they
may only contain up to 75 blocks.
Here are the results of this project in Jim Harris' own words:
"Although they were able to use only 75 icons
in a model, they had to be creative and determine how to develop multiple
models that achieved the entire process by writing data to files and reading
it into a subsequent model. Most students thought this was the best
part of the class.
"I expected a lot of complaints, but received none. The
project was an undefined, open-ended project in which they had three weeks
to do research, learn ExtendSim, generate data, perform analysis, and write
a short report about the project, etc. They presented on Monday this
week. Quite impressive.
"All the students learned ExtendSim in this short period of
time with little guidance from me. I pointed them to the Users Guide
and explained that it was very good and they should read it.
quite impressed with each model developed by the three teams of the class.
One team really went overboard on details and were complemented by other
classmates for their work.
"Overall the class liked ExtendSim. Each class member had exposure
to Arena in a previous modeling and simulation class George Washington
University teaches. (Some had more experience than others as normal.) The
one observation I made was that students who I thought did not understand
the material very well, really came alive as a result ot this project.
"I teach at least one class per year, at times two or three in the
evenings. I plan to continue on this strategy using ExtendSim. This
gives them an opportunity for exposure to other software. My selling point
was that it would look very good on their resume. The class is mostly
seniors and grad students. This was an exercise of reality for them."
Boston, MA USA
part of a required course for all MBA students, pre-packaged
simulation exercises explore and analyze how variability
in processing times affects process performance.
The ExtendSim Simulation Exercises in Process Analysis case
studies are available for purchase by other universities. Each
package consists of a CD that contains pre-built models so
students can execute the simulation and modify certain parameters
to test changes in process design. See the Academic
Textbooks section for ordering details.
Series of computer simulation exercises that explore how variability
in processing times affects process performance. CD contains
pre-built models so students can execute the simulation and
modify certain parameters to test changes in process design.
and discrete event projects
|Updated August 31, 2011
over 11 years, students of Dr.
Jacek Zabawa at Politechnika
Wroclawska have made many models and projects with ExtendSim,
both discrete event and continuous.
For the 2011 Spring semester, the Institute of Organization and Managment at Politechnika Wroclawska applied for and was appointed an ExtendSim Adopter. The ExtendSim Academic Network license awarded was used in four courses:
||Financial Simulation Models
||Financial Analysis with Applications of Company Models
||Business Process Modelling
In previous years, Dr. Zabawa had been utilizing the ExtendSim Demo for these courses (with the exception of the Financial Analysis course), but found that using the Academic Network License awarded as an ExtendSim Adopter made it easier for him to conduct classes and allowed students to better prepare for tests.
This semester was the first time Dr. Zabawa taught "Financial Analysis of Company Applications with Models". It consisted of lecture and seminars. During the lectures, Zabawa presented, among others, the construction of financial statements (balance, incomes etc.) in ExtendSim; including the calculation of income and expenses for this activity-based costing exercise.
In the seminar portion of the course, students created financial simulation models of selected economic games.
The courses in "Simulation Modeling" ran as in previous years.
In the 2009/2010 academic
year, Dr. Zabawa used ExtendSim for two courses:
||Financial Simulation Models
In these courses, students:
||Made several discrete models with ExtendSim, using built-in database blocks. Students also tried to make comparisons between simulations in Vensim as compared to ExtendSim models.
||Dr. Zabawa built several example models to help clarify income and expenditure issues.
||Discussed the basis for programming custom blocks in ModL.
In the 2009/2010 year, Dr. Zabawa put together a series of graphic instructions on the stages of model building, supplemented by detailed descriptions. It proved helpful for students who were not in class and made it is easier for them to make up the material. This approach to teaching gave Dr. Zabawa more time to discuss additional models and techniques.
In addition to models prepared by Dr. Zabawa designed specifically for his course, he also used examples provided by ExtendSim for classroom examples.
Publications from the previous 2 years:
||Preparing for the 2011 Financial Analysis course inspired me Dr. Zabawa to prepare another paper in which he plans to formulate a methodology of modeling assumptions in financial simulations. The paper will roughly describe the multiplication of objects: one object for "things" and second object for "money".
In conjunction with his colleague, Dr. Bozena Mielczarek,
they wrote the chapter Simulation modeling of supply chain management systems for the publication Information systems architecture and technology: IT technologies in knowledge oriented management process / eds Zofia Wilimowska [and others]. Wroc?aw : Oficyna Wydawnicza Politechniki Wroc?awskiej, 2009
Drs. Zabawa and Mielczarek contribution to the book discusses building inventory models, including the modeling of cost accounting in Extendsim.
Dr. Bozena Mielczarek teamed with Dr. Justyna Uziako-Mydlikowska to publish the chapter Simulation models and software tools in another volume of the same book Information systems architecture and technology: System analysis in decision aided problems / eds Jerzywitek [and others]. Wroclaw : Oficyna Wydawnicza Politechniki Wrocawskiej, 2009.
This chapter contains a paragraph about Extendsim.
||Also in the 2009/2010 year, Dr. Zabawa planned to publish another chapter in a book (in Polish) about discrete rate modeling based on the yogurt production model. Details are forthcoming.
In addition, Professor Zabawa has written
a number of papers about the
implementation of ExtendSim. Here are just a few samples:
de Católica de Chile
in repetitive building projects
his final thesis to achieve a PhD in Construction Management, Vicente
González examined buffer management in repetitive
building projects. In April of 2005, Dr. González was
awarded a Research Grant to use Extend for his project. In
January of 2008, he co-authored "Work-In-Process Buffer
Design Methodology for Scheduling Repetitive Building Projects".
Variability is one of the factors with the largest
negative impact in construction projects, which can induce
dynamic and unexpected conditions, unsteadying project objectives
and obscuring the means to achieve them. A common practice
in construction to protect production systems from variability
is the use of buffers (Bf). However, current buffering practices
in construction are characterized by the intuition and informality
leading to poor control of variability. For overcoming these
limitations, this research proposes a Bf design methodology
based on Work-In-Process (WIP) for scheduling repetitive building
projects at tactical and strategic levels. At tactical level,
the methodology uses Simulation-Optimization (SO) models to
design optimum WIP Bf sizes by different project objectives.
Two home building projects implementing the methodology at
this level were studied. As a result, improvements on labor
productivity and project cost were obtained. At strategic level,
a multiobjective model to apply the Bf design methodology was
developed, demonstrating its advantages through a project scheduling
the impacts of applying WIP Bf strategies based on Lean Production
principles are addressed.
||Download final report (664
KB): "Work-In-Process Buffer Design Methodology
for Scheduling Repetitive Building Projects" by
Vicente González and Luis F. Alarcón
||Download Extend OR 6 model files (5.7
MB). Download the ExtendSim
Demo to view these files.
Krannert School of Management
West Lafayette, IN USA
professors Suresh Chand (left) and Herb Moskowitz (right) are
leading a project team that uses management principles to increase
the efficiency of healthcare delivery. What began as an MBA
class project at Purdue University’s Krannert School
of Management is now applying factory
management techniques to a medical clinic, ultimately improving
productivity and quality. The student-faculty team’s
approach to improving healthcare clinic operations is, of necessity, “multipronged.” Ultimately,
the research applies the principles of engineering, management,
science, and information technology to improve the delivery
of healthcare to consumers.
Graduate School of Management
Lafayette, IN USA
Herb Moskowitz developed
a simulation-and case-based, active-and self-learning model
for understanding and applying Six Sigma principles and tools.
The learning model created by Krannert consists of seven interdependent
short cases focused on a specific company in the consumer electronics
industry. Students study yields, cycle times, and defects to
determine where improvements can be made. They use process
control techniques, pareto analysis, and design of experiments.
an integrated project under the European Union's 6th
framework program fo research
54 institutions from all across Europe are united
in the SPICOSA
partnership, representing national research institutes,
The Integrated Project SPICOSA, funded by the EU´s Sixth
Framework Programme, took off in February 2007 with the
aim to develop and test a self-evolving, holistic research
for the assessment of policy options for the sustainable
management of Coastal Zone (CZ) systems. It is thus of high
relevance to Integrated Coastal Zone Management (ICZM) and
other related European policies.
The initiative is based on the insight that policy has not
to respond effectively enough to human pressures on the coastal
environment. A more innovative, thorough approach is needed
to treat the coastal zone as an integral functioning system
System) and to focus more on providing prognostic information
decision makers on how a CZ system might respond to sustainable
technical options or management strategies.
The methodological product of the project is called the Systems
Approach Framework (SAF). It is based on an adaptation of the
Systems Approach that incorporates the ecological, social and
dimensions of the coastal zones together with emerging
concepts on system complexity. The SAF is designed to be readily
updateable, to provide an accumulative knowledge base for wider
and more complex applications, and to contribute to a growing
the options and actions necessary for the transition to
SETNet provides a platform for disseminating information,
knowledge and experiences about systems approaches, specifically
for ICZM students and coastal professionals in Europe. At SETNet,
students involved in coastal management across the EU can find
out the latest education information.
been created by the SPICOSA project via Plymouth University.
SETNet Education provides an overview of the latest techniques
in coastal management and gives examples of how these can be
applied. These are supported by a discussion forum and teaching
materials for Masters and PhD students.
Professional has been created and is maintained by
the SPICOSA project via Cardiff University. SETNet Professional
supports the development of innovative coastal management tools,
the execution of scientific research and public-private collaboration.
site provides access to:
||Academic courses currently offered in ICZM
and related subjects throughout the EU
||Teaching materials for post graduate courses
||Courses available for coastal professionals
||Professional training material
||Links to other useful coastal networks and
||The ENCORA fora for discussion about coastal
education and training.
Hasso Plattner Institute of Design at Stanford
Design for Extreme Affordability course
Design for Extreme Affordability is one of several initiatives
happening at the Hasso Plattner Institute of Design at Stanford
is a two-quarter,
graduate-level project course called Entrepreneurial Design for Extreme Affordability,
where students design comprehensive solutions to challenges
faced by the world’s poor. The course is hosted by the
Stanford Institute of Design, and involves graduate students
from all seven schools at Stanford. Multidisciplinary student
teams work to create innovations that lie at the intersection
of business, technology, and human values. The class is project
based, and all projects are done in close partnership with
a variety of local and international organizations. These organizations
host student fieldwork, facilitate the design development,
and implement ideas after the class ends.
The final deliverable is a product or service framed in a
comprehensive implementation plan including the business model,
the technical innovations, the cultural rationale, and the
appropriate next steps. The course culminates in a professional
presentation to the international partners and a panel of industry
experts. ExtendSim has been utilized in many projects for this
of Commerce and Finance
Bob Nydick published a popular textbook
with case studies that is being used to teach management science
at both the undergraduate and graduate levels. Titled "Decision
Technology: Modeling, Software, and Applications", the
textbook teaches how to apply three management science modules:
mathematical programming with LINGO (linear, integer, and non-linear),
decision analysis using Expert Choice (primarily the Analytic
Hierarchy Process [AHP]), and simulation using ExtendSim (primarily
The course packet includes a textbook bundled with a CD that
contains student (limited) versions of the three commercial
applications. All model files referenced in the text, as well
as explanatory and computer model files relating to the homework
problems, are provided. The book can be customized to deliver
one, two, or all three modules as desired.
The textbook has been used at universities such as Stanford
University, California; Washington University, St. Louis; The
University of Tennessee, Tennessee; Fairfield University, Connecticut;
and Pace University, New York among many others. To learn more,
see Academic Textbooks.