- On Sunday June 13 we will look at the newsboy problem which is a very imprtant part of supply chain management. Please revise your probability knowledge before Sunday.

- The solution for HW2 Q3.c is below:
If distrcit 1 is served let x_1=1, otherwise it is 0. Similarly define x_2, x_3, x_4, x_5, x_6 for the oter districts.
If location A has a station, ley y_A=1, otherwise it is 0. Similarly define y_B, y_C, y_D, y_E for other locations.
Max x_1 +2x_2 +3x_3 +4x_4 +5x_5 +6x_6
x_1 <= y_A+y_D
x_2 <= y_B+y_E
x_3 <= y_A+y_C+y_D
x_4 <= y_C+y_D
x_5 <= y_A+y_B
x_6 <= y_E
y_A+y_B+y_C+y_D+y_E=3
x_i, y_j are either 0 or 1

- Undergraduate students will submit case reports by June 20. Graduate students will submit term papers by June 20. Both reports can be written in groups of at most 3 people.

- As promised on Sunday June 6 lecture, 3 hw questions are announced on Monday June 7 at 17:22.

- Policy change about term reports: You can write your term reports in groups of at most 3 people. This will help you to write a better report. Also remember that there is at most 20 page limit for your reports.

- You can also use same groups to write your case reports. To write the case report, read i2 Harvard case and download i2techques03.pdf from the left. Answer the specific questions in the i2techques03.pdf and pay attention to the format mentioned there.

- Your syllabus is modified at 22:30 on June 4, see syllabus.doc from the teaching page.

- Please submit everything in paper (handwritten, print out or hard copy). I will not read e-mail attachments.

- As promised on Sunday May 30 lecture, 3 hw questions are announced on Monday May 31 at 17:20.

- In order to cut down your paper consumption, remember that you do not have to repeat my questions on your homework papers. Also you do not have to put a one page cover page for a one page homework. Just write your answers. Also remember that paper can not be recycled forever. Its fibers start disintegrating after 15-20 recycles at which time more trees must be cut down to produce paper.

- Please submit printed out copies of your homeworks in the class time or drop them into my office SL400-1 before the class. Do not e-mail your homeworks. I do not have a printer to print them out. Even with a printer and ample supply of paper, printing your hws will be too time consuming. Moreover, I cannot easily pull the attachments from utdallas.edu domain. It takes some time. Moreover every second I spend on the Internet and every file that I download increase my laptop's vulnerabilty to viruses, worms, addware, spyware. So please submit hard copies of hws.

- In Hw1 question 3: The word "semester" generally means half of an academic year. Most universities in the world, including Fu Jen, have two semesters per academic year. There are some universities with three semesters per academic year. To answer the question, however, you do not need to know how many semesters there are in an academic year. Hint: Use the Little's Formula.

- On Friday May 28, I will cover LP and IP formulations. See on the left under Supplements the link called OPRE 6201 Formulation (formulation.pdf), Transportation (network.pdf) and Facility Location (integer.pdf). In formulation.pdf, read sections 1-3 on pages 1-6 (inclusive). In network.pdf, read section 1.1-1.6 on pages 1-3. In integer.pdf, read sections 1-3 on pages 1-4. These pdf files are also available from my teaching web page: www.utdallas.edu/~metin/teaching.html. Click on the OPRE 6201 course and use the password "ilikeor". The chapters on OPRE 6201 web site on the left hand side have lecture notes as *.pdf and associated slides as *_s.pdf.

- As promised on Sunday May 16 lecture, 3 hw questions are announced on Monday morning May 17 at 10:30.

- Welcome to my SCM class. Please read these announcements first whenever you have a question. If your question is not answered, e-mail me.

- So what really is the difference between 1. and 2. editions of the textbook? You may read a review for both editions here .

- I reserve the right to modify course notes before I discuss them. Any modification after the discussion will be announced here.

- Late hw submissions delay the process of grading and posting. Please do not submit late unless you get permission to do so. Unauthorized late submissions will be subject to grade adjustments.

- For supply chain issues/questions/discussion/job announcements, join Yahoo's Supply Chain Management Group .

- Midterm course evaluations/suggestions: Please fill out an evaluation form and put into my office. These evaluations are just for me to improve the course.

- § is the section sign, for example § 1.9 is the first chapter section 9.

- What is the difference between notations A:=B and A=:B? You may see these rarely in the notes. A:=B means A is defined to be equal to B. A=:B means B is defined to be equal to A. In both cases, A=B. But := and =: tell us whether B existed first or A existed first. This is a kind of a chicken and egg issue. However the notation can be helpful in exposition.