In this paper, we investigate the semi-online scheduling problem with known maximum job size on two uniform machines with the speed ratio s >= 1. The objective is to minimize the makespan. Two algorithms are presented, where the first is optimal for 1.559 <= s <= 2 and s >= 3+root 17/2 . In addition, the improvement on lower bounds is made for 2 < s < 3+root 17/2.
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Shanghai Jiao Tong Univ, Antai Coll Econ & Management, Shanghai 200030, Peoples R ChinaShanghai Jiao Tong Univ, Antai Coll Econ & Management, Shanghai 200030, Peoples R China
Cao, Qian
Cheng, T. C. E.
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Hong Kong Polytech Univ, Dept Logist & Maritime Studies, Kowloon, Hong Kong, Peoples R ChinaShanghai Jiao Tong Univ, Antai Coll Econ & Management, Shanghai 200030, Peoples R China
Cheng, T. C. E.
Wan, Guohua
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Shanghai Jiao Tong Univ, Antai Coll Econ & Management, Shanghai 200030, Peoples R ChinaShanghai Jiao Tong Univ, Antai Coll Econ & Management, Shanghai 200030, Peoples R China
Wan, Guohua
Li, Yi
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Shanghai Jiao Tong Univ, Antai Coll Econ & Management, Shanghai 200030, Peoples R ChinaShanghai Jiao Tong Univ, Antai Coll Econ & Management, Shanghai 200030, Peoples R China