Task: Question Answering
Input (English): Passage: The historian Homer H. Dubs speculated in 1941 that Roman prisoners of war who were transferred to the eastern border of the Parthian empire might later have clashed with Han troops there.After a Roman army under the command of Marcus Licinius Crassus decisively lost the battle of Carrhae in 54 BC, an estimated 10,000 Roman prisoners were dispatched by the Parthians to Margiana to man the frontier. Some time later the nomadic Xiongnu chief Zhizhi established a state further east in the Talas valley, near modern-day Taraz. Dubs points to a Chinese account by Ban Gu of about "a hundred men" under the command of Zhizhi who fought in a so-called "fish-scale formation" to defend Zhizhi's wooden-palisade fortress against Han forces, in the Battle of Zhizhi in 36 BC. He claimed that this might have been the Roman testudo formation and that these men, who were captured by the Chinese, founded the village of Liqian (Li-chien, possibly from "legio") in Yongchang County.There have been attempts to promote the Sino-Roman connection for tourism, but Dubs' synthesis of Roman and Chinese sources has not found acceptance among historians, on the grounds that it is highly speculative and reaches too many conclusions without sufficient hard evidence. DNA testing in 2005 confirmed the Indo-European ancestry of a few inhabitants of modern Liqian; this could be explained by transethnic marriages with Indo-European people known to have lived in Gansu in ancient times, such as the Yuezhi and Wusun. A much more comprehensive DNA analysis of more than two hundred male residents of the village in 2007 showed close genetic relation to the Han Chinese populace and great deviation from the Western Eurasian gene pool. The researchers conclude that the people of Liqian are probably of Han Chinese origin. The area lacks archaeological evidence of a Roman presence. 
Question: What is the full name of the person whose synthesis of Roman and Chinese sources has not found acceptance among historians on the grounds that it is highly speculative and reaches too many conclusions?
Output (English): Homer H. Dubs.