Over the past two decades, investigations of nonlinear systems have revealed that the simplest laws of nature can lead to bewilderingly complex dynamics, and yet that such dynamics exhibit universal features which are largely independent of many details of the underlying system. Thus, phenomena as disparate as neuronal dynamics and mixing of granular materials can be studied with the same mathematical tools. Common themes that arise in the study of nonlinear systems include their qualitative dynamics, structural stability, long-term behavior, chaos, bifurcations, and the impact of symmetries on the dynamics.
By stressing the unity of the underlying concepts and using the accumulated experience of scientists from diverse backgrounds, investigators of nonlinear phenomena are transforming important problems once considered intractable, or even ill-posed, into promising new fields. Methods developed in the study of nonlinear systems are now being applied to such areas as pattern formation, quantum theory, bimotor control, computational neuroscience, nonlinear optics, crystal growth, granular flows, biological fluids, mixing, nonequilibrium transport, and combustion. These problems cut across many fields, and traditionally have been studied only by researchers in their individual fields, e.g., chemical, mechanical, or electrical engineering, physics, applied and pure mathematics, or the biological and health sciences.
The aim of the program, Dynamics of Complex Systems in Science and Engineering, is to provide unique training to graduate students at Northwestern who work on problems involving nonlinear phenomena. A systematic study of nonlinear systems should be an important part of the education of all Ph.D. students who will be dealing with complex systems later in their careers. The most remarkable single aspect of nonlinear systems is the commonality of the mathematics that describe them, despite the wildly varying contexts. It is clear that a strongly cross-disciplinary program of study for nonlinear systems will be far superior to any based in a single department or discipline.
Student Timeline
Components

Overview of the various components.
1. Welcoming workshop retreat:
The incoming graduate students will be introduced to the faculty and
more senior students during a weekend retreat to take place in the
early fall, before the first week of classes. On this occasion the
new students will meet the faculty and graduate students associated
with the program. The main purpose of this meeting is to bring the
incoming students into the community and give them an overall view
of the scientific activities of the program. Presentations will be
given by the senior graduate students, who may report on the results
from their work during the second-year project course, from their
internship, or from their thesis research. In addition, the retreat
will provide an informal setting for the discussion of general
topics of concern and interest to scientists. It is also a natural
setting for establishing student-mentor relationships, as well as
identifying a suitable Advisor for each student.
2. Advisor:
This faculty
member, typically outside the students own department, oversees
the students progress through the (missing word). Initially,
the Advisor helps the departmental advisor direct the students
course of study, with special attention to the background courses
needed for the intensive second year course. As the student
progresses through the program, the Advisors role shifts from
that of an advisor on courses to one of a mentor who takes an
interest in the students development as a scientist.
3. Summer Project:
During
the summer between the first and second year, students will work on
small-scale research projects with members of the faculty. Since the
students will be on the Fellowship and will not require support by a
goal-oriented grant of a specific faculty member, this project can be
exploratory for both the student and the faculty members, and will
allow the student to get a better feeling for an area of research
before he/she decides to start a thesis in it. The summer research
projects will also involve 2-3 advanced undergraduates from
underrepresented groups to aid in identifying and recruiting talented
students to our training program.
4. Nonlinear Sciences Course:
The centerpiece of
the proposed graduate training will be the cross-disciplinary
nonlinear science course based on teaching across departments and
schools and on student research projects. This year-long intensive
course, intended for students in their second year of graduate study,
will constitute one of the students elective courses in their
respective Ph.D. programs. It will be taught by faculty from the ,
the , and the (missing words) . The participating graduate students
will be recruited primarily from departments of Applied Mathematics,
Mathematics and physics, the Institute for Neuroscience, and a number
of engineering departments (Biomedical, Chemical, Electrical and
Mechanical Engineering, and Material Science). The course will
provide the students with an in-depth, integrated treatment of
different aspects of nonlinear science, while also introducing
concrete examples of important nonlinear processes in diverse
systems. It will equip the students with the necessary tools for
investigating nonlinear systems in their specific fields of interest.
The course will
start with lectures on the qualitative behavior of dynamical systems
described by ordinary differential equations and maps, including
fundamental elements of bifurcation theory, low-dimensional chaotic
dynamics, and an introduction to dynamical systems with many degrees
of freedom.
In the Winter and
Spring quarters the students will split into 2-3 project-focussed
teams comprised of approximately 5 students each and supervised by 2
faculty members with complementary expertise and perspectives.
The students in a
given team will focus on one theme, with each student pursuing his or
her own project as part of the larger group effort; this ensures that
each student learns all aspects of a specific area, while still
gaining valuable team-work experience. Progress in nonlinear science
rests on the close interplay among theory, experiment, and
computation. This will be reflected in the course by including a
strong computational component in each students experimental
and/or theoretical project.
5. Internship Program:
To complement
their thesis research, students will be encouraged to participate in
an internship program. The goal of this program is to provide the
students with supplementary training that will significantly broaden
and strengthen their education. For example, students working on
theoretical projects might intern in experimental labs, while
students working on experimental theses might collaborate on
theoretical or computational projects. In other cases the internship
could allow the student to master a specific experimental technique
or theoretical approach not readily available at Northwestern, but
important for the students thesis research.
Students,
together with their advisors, will make the initial contact with the
internship host. A brief proposal will then be written that clearly
states the goals of the internship. We expect that internships will
last 3-6 months. The experience of the hosts chosen for the
internship program shows that this length of time is usually
sufficient to achieve meaningful results and sometimes even form the
basis for a publication. After the first three months the host in
agreement with the thesis advisors decide whether the project is
successful and whether the internship will be extended to the full
six months. Upon returning to Northwestern the student will present
his/her results in the form of a written report and a brief
presentation in the Graduate Seminar Series.
The internships
will be make use of the extensive connections the Northwestern
faculty have with other institutions and labs. Close contact between
the thesis advisors and the students host will contribute
substantially to the success of the internships. At the same time,
the internships will provide opportunities for these contacts to grow
into full-fledged collaborations.
Frequently Asked Questions for IGERT Students
General Information
IGERT Student Responsibilities
IGERT Seminars
Internships and Travel
Choosing an Advisor
Other IGERT Programs
General Information
What does IGERT stand for?
IGERT stands for the Integrative Graduate Education and Research
Traineeship Program.
Where is the IGERT Commons Room?
Tech L550 (Yes, there actually is a fifth floor in the Tech building!).
Find directions to the room by linking
through Contacts on the IGERT website.
What kind of information can I find at the IGERT website?
The IGERT website (http://www.complex-systems.northwestern.edu) has a description of the program, a schedule
of seminars and other IGERT events, a list of important contacts, as well as a listing of the IGERT program
requirements and courses offered. In short, the website is the best place to begin any search for
IGERT information.
Where should I go to address IGERT financial matters?
For payroll concerns, see Edla d'Herckens. For reimbursements, see Judy
Piehl. Both are located in the
ESAM office, Tech M426.
IGERT Student Responsibilities
What are my responsibilities as a 1st year graduate student in the IGERT program? Are there course requirements?
There are no course requirements for first year graduate students in the
IGERT program, but regular
attendance to meetings and seminars is expected.
What are my responsibilities as a 2nd year graduate student in the IGERT program?
Course requirements?
2nd year graduate students are required to take Interdisciplinary
Nonlinear Dynamics (438-1), which is
offered each fall quarter. IGERT students should also take at least one of the IGERT project courses (438-2, 3)
offered in the winter and spring quarters. Again, regular attendance to meetings and seminars is
expected.
Do Senior IGERT students have any additional responsibilities?
Students that have more than one year experience are expected to give or
host a Student Seminar in addition
to the regular IGERT responsibilities.
Do I need to acknowledge IGERT in journal publications? How?
Yes. The proper way to acknowledge IGERT in research publications is:
"This research has been supported in part by the NSF-IGERT program 'Dynamics of
Complex Systems in Science and Engineering' (DGE-9987577)."
IGERT Seminars
What are the seminars that IGERT offers?
Nonlinear Seminar- The Nonlinear Seminar generally takes place on
Fridays from 2-3pm in the ESAM conference
room (M416). The seminar features lectures on a wide range of topics in Nonlinear
Dynamics.
Graduate Student Seminar
- The Graduate Student Seminar
features talks from IGERT graduate
students, and
usually takes place in the ESAM conference room (M416) at times and dates announced at the beginning of each
quarter. Besides being a chance for IGERT students to gain experience giving scientific talks, the seminar is also
an opportunity to learn more about peer research. Generally, faculty attendance is discouraged, with the exception
of special Student Seminar topics on ethics and career development, which are given by selected faculty members.
Refreshments (usually pizza and soda) are served after each seminar.
Brown Bag Lunch
- The Brown Bag lunch is an informal
meeting for IGERT students that
usually takes place in
the IGERT Room, Tech L550. About half of the Brown Bag Lunches involve an informal talk given by a faculty member
or student, and the other half are simply opportunities to eat lunch and socialize with the other IGERT students.
The schedule for Brown Bag Lunches is usually posted at the beginning of each quarter.
Seminar for Women in Science and Engineering
- The Seminar
for Women in Science and Engineering features
talks and discussions on topics that are of interest to women in science and engineering. There are usually about 3
meetings per quarter, with dates and times posted on the IGERT website. All are welcome to
attend.
What is the Nonlinear Seminar Focus Topic? Can I suggest a Focus Topic?What are the
seminars that IGERT offers?
The Nonlinear Seminar includes special Focus Topics, which consist of a
series of speakers who specialize in
a specific area of research that may be of interest to IGERT participants. Any IGERT participant may propose a
Focus Topic for the Nonlinear Seminar. For graduate students interested in a specific topic, it is suggested that
they work with their advisor to develop a list of potential Focus Topic speakers, and contact the Nonlinear Seminar
Director (see website) for more information.
What is "Take-the-Speaker-to-Lunch"?
Every Friday before the Nonlinear Seminar, a group of IGERT students
takes the Seminar Speaker to lunch
(lunch paid for by the IGERT program). Generally, an e-mail is sent out by the Take-the-Speaker-to-Lunch
coordinator (see website) earlier on during the week. If you are interested in attending the lunch, simply respond
to the e-mail.
Do I have to give a Student Seminar?
Graduate students with over one year of experience in the IGERT program
are expected to either give or host
one Student Seminar per year.
Internships and Travel
When should I do my internship?
The time period for interning may vary from student to student. Some
students may wish to do an internship
early, before beginning dissertation work, and others may prefer to do an internship much later. It is largely up
to the student and his or her advisor.
How long does the internship last?
IGERT students generally intern for at least a three month period, but
longer internships (~ 6 months) are
also encouraged.
Does IGERT pay me during my internship?
IGERT can provide funds to help with travel and expenses during the
internship.
How do I set up the internship?
Much of the responsibility for arranging the internship rests on the
student. A good place to begin is the
IGERT website, which has a description of the internship program, a listing of potential hosts and examples of
previous internships. Students can also contact the IGERT internship coordinator (see website)
for advice.
Does IGERT give money to go to conferences? When should I do my
internship?
Yes, see the website for information and contacts regarding IGERT travel
grants.
Can I request a travel grant if I don't have research to present?
Yes. In fact, first year students with either no advisor or no research
to present are encouraged to apply
for travel grants to attend conferences of particular interest.
Choosing an Advisor
Do I have to choose an advisor who is currently affiliated with the IGERT
program?
No. By being IGERT-fellows students are not restricted in their choice
of
advisors in any way. Students new to Northwestern, who are offered a two-year
IGERT fellowship are completely free in their choice of research topic and
advisor. For more senior students the requirement to be funded by IGERT is
that their thesis work fit into the framework of the program which is broadly
defined as interdisciplinary nonlinear science. In this context it is worth
mentioning that in the past a number of IGERT students have chosen faculty
advisors who were not IGERT members at the time but who subsequently became
members of the program.
Other IGERT Programs
What is the IGERT Mentoring Program? How does it work?
The IGERT Mentoring Program matches incoming IGERT students with more
senior students in order to ease the
transition into IGERT and/or graduate school at Northwestern, in general. Students are grouped loosely according to
disciplines, and are encouraged to get together in informal settings. Information about the Mentoring program can
be found on the IGERT website.
What should I know about inter-university IGERT workshops?
The Northwestern IGERT program for dynamics of complex systems works
with other IGERT programs in related research
fields to offer joint workshops. These workshops provide a good opportunity for students to give and listen to
informal talks.
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