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排序方式： 共有231条查询结果，搜索用时 15 毫秒
21.
16世纪,在环中国海贸易圈内,传统的贸易格局发生了根本性的变化,这时活跃在东亚贸易大舞台上的除了起主导作用的福建海商,还有新航路开辟后到达这里的葡萄牙人以及日本人,中国东南沿海地区的海洋社会经济逐渐被纳入到近代世界经济体系中去,环中国海贸易圈出现了激烈动荡的局面。 相似文献
22.
为调查公安院校大学生自我效能感与职业认同现状并探讨其相关性,通过整群抽样法选取某公安院校3280名大学生,采用一般自我效能感量表和警察职业认同量表进行调查,结果显示:该公安院校大学生的一般自我效能感总分为(26.49±5.72)分,职业认同总分为(11.55±1.64)分;单因素分析显示,自我效能感总分、职业认同总分在... 相似文献
23.
Yu-Bong Lai 《Public Choice》2007,133(1-2):57-72
This paper considers the political economy linkage between trade liberalization and domestic environmental regulations in a duopolistic product market. We investigate the environmental consequences and welfare implications of a home country’s unilateral tariff reduction on a polluting good. In a framework where the domestic environmental tax is subject to the influence of the home firm, we find that a tariff reduction on a good producing a consumption-type externality will improve the home country’s environmental quality. Moreover, we find that the home country’s tariff reduction will unambiguously enhance the home country’s welfare; and it will damage the foreign firm’s profits and thus the foreign country’s welfare, provided that the weight that the home government attaches to its social welfare is sufficiently small. This result also suggests the possibility that a unilateral tariff reduction will achieve a Pareto improvement. 相似文献
24.
我国高校人力资源管理存在的问题及对策研究 总被引：3，自引：0，他引：3
当前,我国高校人力资源利用效率低下,主要是由于高校人力资源管理理念滞后,重视度不高,"进出"盲目、激励机制效能较差、绩效考核机制粗糙、模糊等原因造成的,为了推动高校人力资源结构合理化,需要树立"以人为本"的现代人力资源管理理念、协调按"需"设岗与"以人为本"的关系,营造"和谐"人力资源管理环境,构建支持高校人力资源管理的软硬支持体系,创新高校人力资源管理核心机制。 相似文献
25.
只有把实践活动理解为人本源性的生存方式,才能抵达实践概念真实的理论精神,避免对实践概念真实内涵的种种遮蔽。从人与世界的关系、世界、人、人的价值实现、理论理性与实践理性的关系等五个基本方面阐发实践作为人本源性生存方式的意蕴,能揭示实践活动与人的生命存在之间的深层关联。 相似文献
26.
1683年清政府统一台湾,又于1885年建省。刘铭传作为首任台湾巡抚,为开发台湾建下了历史功绩。评价历史人物不必一分为二,而应择其一生中的重要阶段作评论。 相似文献
27.
28.
Hsieh HM Chiang HL Tsai LC Lai SY Huang NE Linacre A Lee JC 《Forensic science international》2001,122(1):7-18
A partial DNA sequence of cytochrome b gene was used to identify the remains of endangered animals and species endemic to Taiwan. The conservation of animals species included in this study were: the formosan gem-faced civets, leopard cats, tigers, clouded leopards, lion, formosan muntjacs, formosan sika deers, formosan sambars, formosan serows, water buffalo, formosan pangolins and formosan macaques. The control species used included domestic cats, domestic dogs, domestic sheeps, domestic cattles, domestic pigs and humans. Heteroplasmy was detected in the formosan macaque, domestic pig and domestic cats. The frequencies of heteroplasmy in these animals were about 0.25% (1 in 402bp). Sequences were aligned by Pileup program of GCG computer package, and the phylogenetic tree was constructed by the neighbor-joining method. The results of sequence comparison showed that the percentage range of sequence diversity in the same species was from 0.25 to 2.74%, and that between the different species was from 5.97 to 34.83%. The results of phylogenetic analysis showed that the genetic distance between the different species was from 6.33 to 40.59. Animals of the same species, both the endangered animal species and domestic animals, were clustered together in the neighbor-joining tree. Three unknown samples of animal remains were identified by this system. The partial sequence of cytochrome b gene adopted in this study proved to be usable for animal identification. 相似文献
29.
Li Dai;Lin Zhang;Houliang Wang;Ning Lai; 《Asian Politics & Policy》2024,59(6):2300255
In this paper, Zr:Dy:LiNbO3 crystals are prepared by traditional pull-up method, in which Zr4+ doping concentrations are 0, 1, 2, and 4 mol%, respectively. In this paper, the defective structure of Zr:Dy:LiNbO3 crystals and their resistance to photodamage under different Zr4+ concentration doping are studied. Firstly, the influence of Zr4+ doping concentration on the defective structure of Zr:Dy:LiNbO3 crystal and the occupancy of doped ions under different Zr4+ concentrations are tested and discussed by infrared (IR) absorption spectroscopy and ultraviolet-visible near-infrared (UV–vis–NIR) absorption spectroscopy. The Judd–Ofelt theoretical analysis results show that when the concentration of doped Zr4+ is 2 mol%, the spectral quality factor (X) of Dy3+ in lithium niobate crystals is significantly improved compared with that of Dy3+ in other crystals. Secondly, resistance to photodamage of Zr:Dy:LiNbO3 crystals is studied and analyzed by the light scattering exposure energy flow threshold method. The results show that when the concentration of doped Zr4+ ions reaches 4 mol%, the exposure energy value is increased by 210 times compared with the no doping, which greatly improves the anti-photodamage performance of the crystal. 相似文献
30.
Asia Europe Journal - In order to adapt to a changing global order, the European Union (EU) has established an important mechanism for cooperating with some of the world’s most influential... 相似文献