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Table 5 The actual inventory quantity and demand rate, from May 2004 to April 2008

From: Probabilistic multi-item inventory model with varying mixture shortage cost under restrictions

Year

No. of cycle

Month

Item 1

Item 2

Item 3

Q1

D1

Q2

D2

Q3

D3

2004

1

May

5800

6000

10,500

10,500

8000

900

June

9000

8000

9000

10,000

5500

500

July

11,800

12,000

12,000

12,000

8000

900

Aug

11,800

12,000

12,000

12,500

6000

500

Sept.

8000

8500

10,000

9000

4000

400

Oct.

7200

7000

7500

7000

3000

400

2

Nov.

10,000

10,000

10,000

10,500

5500

500

Dec.

11,000

12,000

9000

9000

5500

500

2005

 

Jan.

12,800

12,800

11,000

11,000

5000

550

 

Feb.

11,000

10,000

7500

7500

4000

500

 

March

6000

6500

12,500

12,500

5000

500

 

April

9500

8500

13,000

12,500

7000

600

3

May

12,000

12,000

11,000

12,000

9500

10,000

 

June

12,000

12,500

10,000

9000

6500

6000

 

July

8500

9000

12,500

12,800

9000

10,000

 

Aug.

7000

7500

17,000

16,000

7000

6000

 

Sept.

11,000

12,000

9000

10,000

5000

5000

 

Oct.

13,400

11,000

7800

8000

4000

5000

4

Nov.

12,850

13,500

12,500

12,000

6500

6000

Dec.

12,830

13,000

11,000

12,000

6500

 

2006

Jan.

12,850

12,500

11,850

10,500

7000

7500

Feb.

12,830

11,850

6830

8000

6000

7000

March

12,820

12,000

11,820

12,500

7000

7000

April

10,730

11,030

12,730

12,230

9000

8000

5

May

6500

7000

11,500

12,000

10,000

11,000

June

9800

8500

10,000

9500

7500

7000

July

12,500

13,000

12,800

12,950

10,000

11,000

Aug.

12,200

13,000

17,000

16,000

8500

7000

Sept.

9000

8600

9000

9500

6000

6000

Oct.

7000

7300

8500

8750

5000

6000

6

Nov.

10,000

12,000

13,000

12,000

7500

7000

Dec.

12,000

10,500

11,500

12,500

7500

7000

Jan.

13,000

14,000

12,000

11,000

8000

8500

Feb.

13,000

13,000

7000

8000

7000

8000

March

13,000

12,000

12,000

13,000

8000

8000

April

11,000

10,000

13,000

13,000

10,000

9000

  

May

7000

7000

12,000

13,000

11,500

12,000

June

10,000

11,000

10,000

9000

8500

8000

July

13,000

13,000

13,000

14,000

11,000

12,000

Aug.

12,000

13,000

17,000

16,000

9000

8000

Sept.

9000

9000

11,000

9000

7000

7000

Oct.

10,000

8000

8000

9000

7000

7000

8

Nov.

10,000

12,000

13,000

12,000

8500

8000

Dec.

12,000

10,000

11,500

12,000

8500

8000

2008

Jan.

14,000

14,500

12,500

12,000

9000

9500

Feb.

13,000

13,200

8000

7500

8000

9000

March

13,000

13,000

13,000

13,000

9000

9000

April

11,000

10,000

14,000

14,000

11,000

10,000