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1.
贵州贡院建于明嘉靖十六年首开乡闱时,其发展历程正是贵州科举史的缩影。其结构及功能与他省贡院相似,规模居于全国中下等,号舍最少时不足千间,最多时超过四千间。其明末毁于战火,清代重建后亦频繁维修,经费则以公款为主,辅以民间捐助。 相似文献
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作为世界美术史上的奇迹,敦煌飞天有着悠久而灿烂的历史,经历了千余年的岁月,展示出不同的时代特色和民族风格。从诞生至今,飞天那飘舞的衣裙一直影响和启迪着一代又一代艺术家,给人以美的享受。 相似文献
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Jacop Custodi elaborated recently a response to our article “A nationalist party with non-nationalistic voters? Discussing the limits of nationalism in party categorisation” published in the journal Nations & Nationalism. We consider the work of Custodi is an important and original contribution to the study of left politics and nationalism. This being said, we reflect on the negative consequences of overstretching the category nationalism, both referring to parties and to political discourse. The aim of this reply is unpacking and explaining these negative consequences and offering an alternative as well as responding to some specific points raised by Custodi in his reply. 相似文献
5.
本文通过 X 射线衍射(XRD)、差热分析(DTA)、发射光谱分析(ESA)、扫描电镜(SEM)和能量色散 X 射线分析(EDAX)的方法,对古耀州青瓷所用原料及其矿物组成,古瓷器的烧成温度和显微结构进行了分析研究。得出耀瓷乃是使用当地高岭石和伊利石粘土矿物为原料烧制而成,烧成温度在1200℃以上的结论. 相似文献
6.
近代中国邮政空间主要是以民信局、国营邮政、侨批等多种企业实体构成。清朝邮政成立后即开始蚕食小额民间资本支持下的民信局经营空间,而基于对1936年《中华民国邮政舆图》的数字化工作发现,历经40余年经营,国营邮政基本整合了全国范围内的邮政空间,也基本完成了本领域的“国进民退”。在此过程中,国营邮政审慎模仿民信局的经营方式,使用多种创新经营策略,除了在大中城市内部和城市之间构建了便捷快速的邮政网络空间,更借助邮政代办的方式以极低的成本将营业网络“下沉”到铁路和公路无法覆盖的农村地区,较好地与传统农村“定期市”网络完成耦合,基本达到了通商处必通邮的效果。国营邮政点和邮路集聚所形成的“邮政聚集区”也成为一种显著的近代化外在空间表征,同时成为界定所谓“核心—边缘”结构的系统可信、定量可验证的空间指标。 相似文献
7.
Yong Ge Can Wang Xiujia Huan Su-chiu Kuo Hsiao-chun Hung Zhenhua Deng 《Archaeometry》2023,65(6):1313-1321
The selection of a non-shattering phenotype is a pivotal change in the process of rice domestication. However, current research is heavily restricted by the preservation conditions of macro-plant remains in early and middle Neolithic sites, as very limited well-preserved rice spikelet bases could be retrieved. We present a non-destructive method based on micro-computed tomographic (CT) scanning, which could provide detailed visualization of the internal structures of charred spikelet bases and efficiently discriminate the shattering and non-shattering phenotypes of rice spikelet bases according to the abundance of fusiform echinate phytoliths. It could be widely applied in different contexts, especially those poorly preserved specimens and tempers in pottery sherds, greatly improving our knowledge of rice domestication. 相似文献
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In archaeology, strontium isotope analysis is developing into an efficient scientific technique for tracing the movement of prehistoric humans and animals. Determining the local bioavailable 87Sr/86Sr ratio range is the key to distinguishing whether the human or animal is indigenous to the local area. It has been shown that the 87Sr/86Sr ratio in the enamel of pigs can be an excellent sample to determine the range of local strontium isotope ratio at the site. However, pigs may not be all local at the site, and there is no special study on whether pigs’ different ages and tooth types impact the local strontium isotope characteristics. In this paper, the tooth enamel of 19 pigs from the Zaoshugounao site for strontium isotope ratio (87Sr/86Sr) by multicollector–inductively coupled plasma mass spectrometry. There were no significant differences in 87Sr/86Sr ratios of local pigs at different months and different molar types, which did not affect the determination of the local strontium isotope standard. Based on the local strontium isotope ratio range (0.711056–0.711476), we found that five pigs were non-local. The Jing and Wei river basins (in Guanzhong basin) and northern Shaanxi are likely sources of non-pigs. 相似文献
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Geographical distance constitutes friction in searching for research collaborators. Taking advantage of a quasinatural experiment featured by High-Speed Railway (HSR) lines in China, this paper employs the difference-in-differences model to identify the causal impact of a substantial improvement in the intercity transportation infrastructure on collaborative innovation across cities. The data pertain to a universe of patent applications filed by Chinese universities and their citations. We find that HSR contributes to a substantial increase in the innovation quantity and quality of collaborative patenting innovation between universities and corporates. It contributes to industry collaboration by utilizing university academic disciplines in the related technology fields. Lastly, HSR facilitates universities to search for new research partners with better quality beyond the geographical boundary. 相似文献
10.
Juan Luis Gómez-Reino Santiago Lago-Peñas Jorge Martinez-Vazquez 《Journal of regional science》2023,63(4):793-819
The standard theory of optimal jurisdictional size hinges on the existence of economies of scale in the provision of local public goods and services. However, despite its relevance for forced local amalgamation programs and related policies, the empirical evidence on the existence of such economies of scale remains elusive. The main goal of this paper is to produce an updated and comprehensive quantitative review of the existence of economies of scale in the provision of local public goods using a meta-analysis approach to systematize the wide range of empirical approaches and modeling frameworks found in the previous literature. Our analysis confirms the presence of moderately increasing to constant returns to scale in the provision of local services with no reduction in the average costs of production in the delivery of most local public services beyond a certain, modest jurisdictional size, which many studies have estimated at 10,000 residents. Also, the potential for economies of scale differs at least across three traditional services: education, water and sanitation, and garbage collection, being highest for education and lowest for garbage collection. Our analysis also offers guidelines for future empirical research in this area. Physical output and production cost data should be used, together with translog specifications for the modeling of cost functions. Last, we find evidence that the determinants of output cost elasticity include bidirectional publication bias and population density but do not include the presence or absence of modern “lean” production technologies or the (perceived) capital intensity of the sector, contrary to conventional wisdom. These findings have significant policy implications for countries considering jurisdictional consolidation programs. 相似文献