1. Editorial: In memoriam: Yong He (1969–2005)

   • Guohui Lin
   • Zhiyi Tan

   EditorialNotes 20 September 2006 Pages: 325 - 326

2. The web proxy location problem in general tree of rings networks

   • Guangting Chen
   • Gu Zhang
   • Rainer E. Burkard

   OriginalPaper 20 September 2006 Pages: 327 - 336

3. Scheduling with machine cost and rejection

   • György Dósa
   • Yong He

   OriginalPaper 20 September 2006 Pages: 337 - 350

4. The shortest path improvement problems under Hamming distance

   • Binwu Zhang
   • Jianzhong Zhang
   • Liqun Qi

   OriginalPaper 20 September 2006 Pages: 351 - 361

5. Separating online scheduling algorithms with the relative worst order ratio

   • Leah Epstein
   • Lene M. Favrholdt
   • Jens S. Kohrt

   OriginalPaper 20 September 2006 Pages: 363 - 386

6. A note on the complexity of the problem of two-agent scheduling on a single machine

   • C. T. Ng
   • T. C. E. Cheng
   • J. J. Yuan

   OriginalPaper 20 September 2006 Pages: 387 - 394

7. Inverse maximum flow problems under the weighted Hamming distance

   • Longcheng Liu
   • Jianzhong Zhang

   OriginalPaper 20 September 2006 Pages: 395 - 408

8. Dynamic-objective particle swarm optimization for constrained optimization problems

   • Haiyan Lu
   • Weiqi Chen

   OriginalPaper 20 September 2006 Pages: 409 - 419

9. Optimal algorithms for uncovering synteny problem

   • Chen Ting
   • H. E. Yong

   OriginalPaper 20 September 2006 Pages: 421 - 432