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明代曲作家胡文焕的戏曲与散曲创作较少有人关注,本文通过考证认为,除一般所称四种剧作外,胡文焕尚作有《完扇记》一剧;同时,文章试图以统计方法对其散曲作品进行详细分析。胡文焕编选的《群音类选》是明代最称浩繁的戏曲选本,本文对其在编选体例、观念和内容方面的独到之处都一一加以评述。 相似文献
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入世后,民族教育的发展,面对国际社会教育所带来的压力和挑战,要求与机遇,需要我们适时作出相应的对策。这篇章主要从民族教育的现状,国家对民族教育的政策法律保障,加入WTO之后民族教育面临的机遇与挑战以及对策四方面来论述加入WTO对民族教育的影响。 相似文献
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曾磊 《中国边疆史地研究》2020,(1):107-116,215
通过对“祖家将”这一关宁军中较为重要的武将集团在关宁军中地位之演变可知,天启年间“祖家将”在关宁军中的地位较低。袁崇焕督师辽东期间,祖大寿因战功擢升为总兵,在大凌河之战后,祖大寿的地位得以稳固,随即发展个人势力。但应看到,“祖家将”在关宁军中始终没有占据绝对主导地位,明廷对关宁军控制较深。因此,“家军”、“将门”的方式,不能完全用来揭示关宁军的性质,不能将关宁军简单界定为独立于明廷的军阀武装。 相似文献
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公元前506年吴师入郢之役的战争地理过去共有三种论说。本文结合古文字资料、历史文献以及田野考察资料,重新解读“淮汭”与“豫章”两个关键地名,并以吴、楚之间的水、陆交通线为背景,重建这一战役的战争地理。吴师的进兵与退兵都是利用淮河水道,而双方的交战则是在随枣走廊之中往复。相较于过去的学说,本文的地理重构不只是立足于较为可靠的文献基础,同时展现出更为合理的空间逻辑关系。 相似文献
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为探明桂林七星岩景区摩崖题刻文物所赋存的山体里断裂带及岩溶洞穴等渗水通道的发育情况,采用考虑道间时差相位的多道瞬态瑞雷波探测方法,结合工程地质勘察资料,揭示了山体里对摩崖题刻产生溶蚀病害的断裂带及岩溶裂隙等渗流通道的空间位置和规模,为石刻文物注浆保护方案的制定提供了科学依据,也为瑞雷波方法在相关工程的应用提供了经验和借鉴。 相似文献
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The vector assignment p‐median problem (VAPMP) is one of the first discrete location problems to account for the service of a demand by multiple facilities, and has been used to model a variety of location problems in addressing issues such as system vulnerability and reliability. Specifically, it involves the location of a fixed number of facilities when the assumption is that each demand point is served a certain fraction of the time by its closest facility, a certain fraction of the time by its second closest facility, and so on. The assignment vector represents the fraction of the time a facility of a given closeness order serves a specific demand point. Weaver and Church showed that when the fractions of assignment to closer facilities are greater than more distant facilities, an optimal all‐node solution always exists. However, the general form of the VAPMP does not have this property. Hooker and Garfinkel provided a counterexample of this property for the nonmonotonic VAPMP. However, they do not conjecture as to what a finite set may be in general. The question of whether there exists a finite set of locations that contains an optimal solution has remained open to conjecture. In this article, we prove that a finite optimality set for the VAPMP consisting of “equidistant points” does exist. We also show a stronger result when the underlying network is a tree graph. 相似文献
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