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					Proof of Language Proficiency

     Principal Applicant: Guoli Li

    Section 1 Claim

English is my official language. I do not have any training in French. My claim of
English skills is listed below.

   Speaking: high proficiency
   Listening: high proficiency
   Reading: high proficiency
   Writing: high proficiency

Section 2 Support
I will support my claim with my education background, publications, work experience,
academic awards, and English tests. The relevant documents are provided along with
this application.

1. Education Background

I began my Master of Science (M.Sc.) program in the Department of Computer
Science at the University of Toronto in Sept. 2003 and completed my Master of
Science in Jan. 2005. Now, I continue my PhD program in the same research area.

My research area is workflow management based on distributed content-based
publish/subscribe systems and related area. The current project I am involved is called
PADRES, which is a distributed content-based publish/subscribe middleware platform.
This project is a collaborative research project between the Middleware Systems
Research Group at the University of Toronto, Ontario-based Cybermation Inc., and
Sun Microsystems of Canada. The PADRES team consists of 2 PhD students (I’m one
of the two PhDs), 5 master students, Prof. Arno Jacobsen and 2 technical architects from
Cybermation Inc. As a PhD student, I organize the group meetings weekly to discuss
research challenges, communicate with the industry partners for the commercial
requirements of the project, and coordinate with other team members to design and
implement the project. The project processes smoothly, and the first demo version of
the project is finished in 6 months after the design phase. I successfully presented the
PADRES project in Cybermation Inc.

As part of my M.Sc. thesis, my research focuses on optimizations in content-based
routing, event correlation in distributed Publish/Subscribe, and decentralized
workflow management based on Publish/Subscribe. I finished my master thesis in 3
months based on the solid research that I had conducted. My M.Sc. thesis is 121 pages
long, which is proved by two professors in Department of Computer Science at
University of Toronto. I also published 4 academic papers about my research at
several international conferences (Please refer to the Publications Section for detail).

My M.Sc. program in computer science had an extremely heavy workload, where I
spent hours actively listening in lectures, read through countless number of books,
prepared reports, technique papers and documentations, and presented my work to
professors and classmates. For example, in the course “Advanced topics in distributed
computing”, I gave a lecture about “Group Communication”, which was 3 hours long.
I also successfully completed three major projects worked in teams of three. For all
the 7 courses I took in the last 2 years, my cumulative GPA is 3.9 out of 4. Without
strong English skills it would be difficult to survive the graduate program in
University of Toronto, not to mention accomplishing what I have. Copies of my
transcript, M.Sc. thesis, publications and master degree certificate are provided.

In China, I receieved my M.Sc. and Bachelor degree in the Department of Computer
Science at Xi’an Jiaotong University. I’ve studied English for 12 years.

2. Publications

During my graduate program in University of Toronto, I exploit optimizations in
content-based routing, such as covering and merging techniques, and present a unified
approach for message routing, covering and merging in Publish/Subscribe systems
based on modified binary decision tree. This work is published in International
Conference on Distributed Computing Systems (ICDCS’05), Columbus, Ohio, USA,
June 2005.

Guoli Li, Shuang Hou, Hans-Arno Jacobsen “A Unified Approach to Routing, Covering and
Merging in Publish/Subscribe Systems based on Modified Binary Decision Diagrams”, In
Proceedings of 25th International Conference on Distributed Computing Systems (ICDCS),
Columbus, Ohio, USA, 2005

I study the distributed composite event detection in Publish/Subscribe literature by
designing a subscription language and supporting composite subscriptions in
PADRES. The content goes to the paper “Composite Subscriptions in Content-based
Publish/Subscribe Systems” which is accepted by the ACM/IFIP/USENIX 6th
International Middleware Conference 2005. Another paper “Decentralized Workflow
Execution based on PADRES” is also accepted by the conference as a demonstration

Guoli Li and Hans-Arno Jacobsen, Composite Subscriptions in Content-based Publish/Subscribe
Systems, ACM/IFIP/USENIX 6th International Middleware Conference, Grenoble, France,

Guoli Li, Eli Fidler and Hans-Arno Jacobsen, Decentralized Workflow Execution based on
PADRES, ACM/IFIP/USENIX 6th International Middleware Conference, Grenoble, France,
November, 2005

I implement a workflow management system based on PADRES. The
Publish/Subscribe based workflow management eliminates most of the limitations of
traditional centralized workflow management systems, such as the centralized
manager causes a single point failure and forms a bottleneck of performance.
PADRES, which has composite subscriptions in addition to the standard
Publish/Subscribe features, illustrates the success of the paradigm in the workflow
management context. The work is described in detail in “Distributed
Publish/Subscribe for Workflow Management”, International Conference on Feature
Interactions in Telecommunications and Software Systems (ICFI’05), Leicester, UK,
June 2005.

Eli Fidler, Hans-Arno Jacobsen, Guoli Li, and Serge Mankovski “The PADRES Distributed
Publish/Subscribe   System”,   International   Conference    on    Feature    Interactions   in
Telecommunications and Software Systems (ICFI'05), Leicester, UK, June 2005

Full papers listed above are provided.

3. Work Experience

As a PhD student, I also work as a research assistant in Middleware Systems Research
Group at the University of Toronto. This position demands a high level of English
skills. As I have described above, I need to work with other research assistants and
professors, read and write many research and technical documents to make progress
in research. The papers I published and the master thesis are the evidences of my
English skills.

I am a teaching assistant in the Department of Computer Science Department for
course CSC444 (Software Engineering) and CSC207 (Software Design). I’ve worked
for 6 semesters and my duties in these courses included weekly tutorials during which
I taught students software design concepts and supervised computer lab during which
I help students with their assignments. I have a good relationship with the class
instructors and students. They described me as a very helpful and communicative
person in the final course evaluations.

4. Awards

I am the winner of Communications and Information Technology Ontario (CITO)
Research Excellence Scholarships in June 2005. CITO awards Research Excellence
Scholarships in recognition of exceptional graduate students whose CITO-supported
research has created new knowledge, technology or advancement in their field of
study. Candidates for this award are nominated by their professor with submissions
reviewed by an independent panel. Each nomination is evaluated on the quality of the
student’s research ability, the student’s impact on the CITO project, and the quality of

the student’s collaboration with industry and other team members. I am one of the 7
winners in 2005. My profile is published on CITO’s webpage.

I am the winner of Connaught Scholarship in University of Toronto from 2003-2007.
Each year only one or two students in the Department of Toronto receive this
scholarship. The candidates are nominated by the Department and reviewed by the
panel of School of Graduate Study, University of Toronto. Each nomination is
evaluated on the research ability, publications and GPA.

5. English Tests Provided by ETS

In Oct. 2001, I took the Test of English as a Foreign Language (TOEFL) and scored
623 out of 667, with 4.5 out of 6 essay rating. The TOEFL test evaluates a foreigner’s
ability to speak, listen, read and write in English. This test is also an admission
requirement for international students, in English-speaking postsecondary institutions.
University of Toronto, for instance, only considers graduate international students
with TOEFL scores of 580 for admission1. This test shows that my English level
exceeds the expectation of even the highly regarded University of Toronto. A copy of
my TOEFL score record is provided.

In Oct. 2000, I took the Graduate Record Examination (GRE) and scored 2090 out of
2400. The Graduate Record Examinations (GRE) Program has served the need of the
graduate community for a reliable assessment of the knowledge and abilities of
applicants to graduate school for over fifty years. GRE scores are required for
graduate program admissions to most universities in U.S.A. and some universities in
Canada. Students with GRE scores of 1900 are considered for admission in most
North American universities.

Section 3 Conclusion

For the two years that I have been living in Canada, I have been constantly exposed to
English-speaking environments. I completed my M.Sc. program, and extended my
study to the PhD level. I also worked at University of Toronto as a Teaching Assistant
for six semesters. My strong English skills contributed immensely to all that I have
accomplished. Based on these facts, I claim that my English skills in speaking,
listening, reading and writing are all in the high proficiency level.

  University of Toronto TOEFL admission requirements.


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