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991.
992.
重庆城市体系的结构研究 总被引:6,自引:2,他引:4
本文讨论了重庆城市建设发展的总特征,分析了城市体系发展中规模结构工业职能的空间结构所存在的主要问题,提出了进一步推动重庆城市体系建设发展的战略研究。 相似文献
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994.
Pey-Chun Chen Pierre Hansen Brigitte Jaumard Hoang Tuy 《Journal of regional science》1992,32(4):467-486
ABSTRACT. Weber's problem consists of locating a facility in the plane in such a way that the weighted sum of Euclidean distances to n given points be minimum. The case where some weights are positive and some are negative is shown to be a d.-c. program (i.e., a global optimization problem with both the objective function and constraint functions written as differences of convex functions), reducible to a problem of concave minimization over a convex set. The reduced problem is then solved by outer-approximation and vertex enumeration. Moreover, locational constraints can be taken into account by combining the previous algorithm with an enumerative procedure on the set of feasible regions. Finally, the algorithm is extended to solve the case where obnoxiousness of the facility is assumed to have exponential decay. Computational experience with n up to 1000 is described. 相似文献
995.
996.
法国军事顾问团来华与抗战前期中法关系 总被引:1,自引:0,他引:1
抗战前期,法国和其它西方大国一样对日本侵略实行绥靖政策,对中国只表示道义上的支持和给予极其有限的援助,妄图以牺牲中国的利益,换取自己的暂时和平。由于法国的特殊情况,他的对华政策具有一些与众不同的特点。一般文章只论及英美在抗战时期的对华政策,而对法国的研究偏少,本文试图通过抗战前期法国军事顾问团来华这一事件,揭示此期法国政府的对华政策及中法关系的演变。 相似文献
997.
Jinhua Chen 《Frontiers of History in China》2014,9(2):314-317
China has long boasted a time-honored tradition of reverence for books, but this tradition has been subject to periodic countercurrents that have occasionally led to the widespread, deliberate destruction of books by political authorities. The two most notorious historical examples of this phenomenon are the massive book-burning carried out by the First Emperor of the Qin dynasty, 相似文献
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1000.
Bo Chen 《Frontiers of History in China》2018,13(4):558
In the New Policies period of the late Qing, the central government’s power had declined due to an expansion of power at the local-government level. After gaining the right to independently fundraise during the Self-Strengthening Movement, local governments also obtained the privilege of issuing currency. Following a downward trend in China’s fiscal power, the issuance of banknotes by local government had become a noticeable problem. The influence of foreign banks in China, meanwhile, was continuing to expand, the increasing number of countries involved as well as the growing number of banks being just two examples. Because the central government lacked strong supervision, the rate of issuance of banknotes by foreign banks thus gradually increased, leading to growing prices. In addition, this dispersion of financial power further boosted inflation. Since the Qing government focused on reforming its approaches to finance and strengthening its central role during the New Policies, reorganizing its banknote policy was its primary agenda. However, to a large extent, the policy was guided by the idea that monetary policy should be subordinate to financial needs. Thus, the very limited effect of the Qing government’s banknote-reorganization policy also marked the regime’s failure to bring about the modernization of China. 相似文献