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61.
谢西川 《山西广播电视大学学报》2007,12(4):51-52
语言表达是教师的一项基本功。历史教学中教师的课堂语言,必须讲求科学性并做到形象生动,还要感情充沛,语言简练、干净、明确。 相似文献
62.
谢冬冰 《南京师范大学文学院学报》2004,(1):25-31
构成语言的基本单位之一是名称,名称最早产生于直觉的聚合。在人类的神话阶段,人们对神的崇拜实质上是对神的名称的崇拜,因为各种神灵的本质只是一种只有能指而没有所指的虚构。早期人类意识中的隐喻思维对名称的产生起了关键的作用。所以,语言生成的初始过程不是一个逻辑化的过程,而是一个诗性思维的过程。 相似文献
63.
比较教育研究的基本范式述评 总被引:5,自引:0,他引:5
本文根据历史线索对比较教育研究领域中的三种范式:科学主义的研究范式、批判理论的研究范式和解释学的研究范式,进行了大致的厘定和评价,试图展示该领域理论形态和研究策略的整体景观。同时,就各自理论话语所处的特定语境作简单的分析,并倡导各自间不应是相互对峙与攻讦,而是要彼此间抱宽容和理解态度,不是苛求于整合而是要寻求互补。 相似文献
64.
The Hybrid Fiber-Coax (HFC) network is being paid close attention to in recent years as a bi-directional broadband access
network. To achieve seamless connection with the backbone network, and Asynchronous Transfer Mode (ATM) Network Network Interface
(NNI) cell format is used as the basic transmission packet unit in the HFC system. As the transmission condition of the HFC
system’s upstream channel is bad, two improved header error control (HEC) schemes, i. e. the improved HEC and the cell interleaving
technique, are employed to guarantee the packet integrity. Theoretical analysis of the results showed that the improved HEC
and the cell interleaving technique are applicable to isolated random errors and burst errors, respectively. 相似文献
65.
Dazhong Ma Qiuye Sun Xiangpeng Xie Xiaoyu Li 《Journal of The Franklin Institute》2019,356(3):1225-1246
The power sharing of AC/DC micro-grids is researched in this paper. The proposed strategy mainly include two parts: the primary power event triggering control with secondary control and an adaptive quasi sliding mode voltage control in inner-loop. Firstly, a event triggering power sharing control (ETPSC) based on droop curve is developed to regulate the voltage and frequency of AC and voltage of DC with the aim of the proportional power sharing between AC and DC micro-grids. The triggered threshold of ETPSC can be chosen to decide the transmitted power between AC and DC micro-grids. When the difference power between AC and DC micro-grids is less than the triggered threshold of power flow, there is no power sharing between AC and DC micro-grids, which can less the number of switching the power flow direction and the transmitted line power loss. The ETPSC has a great robust for the disturbances of load and improve the stability of the system. An adaptive quasi-sliding-mode control,which is implemented easily and flexibly with small computational burden and only based on input/output (I/O) measurement data but not the model any more, is used to control voltage in inner-loop. The effectiveness of the proposed control schemes is demonstrated by some numerical simulations and experimental results. 相似文献
66.
中医认为原发性坐骨神经痛属于痹症范围,因风寒邪入侵,局部气滞血瘀,经络闭阻所致,本文就近年来坐内神经痛的治疗方法作一探讨。 相似文献
67.
笔者于1997~2000年间运用隔姜灸配合超短波,治疗急性细菌性痢疾31例,取得了较满意的疗效,现报告如下: 相似文献
68.
本文通过对超高层框筒结构-上海浦东新资大厦进行分析,着重介绍了超高层结构预应力设计中一些需要特珠注意的因素,同时针对超高层结构在预应力施工中的一些特点,提出了施工中一些特殊要求.本文对从事高层预应力结构设计及施工的人员有一定的借鉴作用. 相似文献
69.
本文在分析图书馆文化创意产品合作开发现状的基础上,以山东省图书馆首届文化创意产品设计大赛为契机,介绍了山东省试点图书馆+高校合作开发文化创意产品的情况,构建图书馆+高校合作开发文化创意产品模式化流程,并提出文创开发需要限定主题、创意空间服务文创、争取政策性激励以支持文创合作三点优化措施。 相似文献
70.
Potential growth of two widely-grown hybrid rice varieties in the Jinhua district of Zhejiang Province, Shanyou63 for mid-rice and Xieyou46 for late rice, was simulated using a crop growth model of WOFOST. Parameters of the rice growth in WOFOST were calibrated through field experiments from 1999 to 2002 in Jinhua. The potential yield simulated with WOFOST was about 12 t/ha for Shanyou63 and 10 t/ha for Xieyou46, which are in good agreement with the highest recorded yield obtained in this area. Under farmers practice, current yield is about 7.5 t/ha for Shanyou63 and 6.5 t/ha for Xieyou46. There is a gap between the actual rice yield and the potential yield for these two hybrid rice varieties grown in this area. The attainable target yields were set to 70% to 75% of their potential yields for the two varieties. A recently developed software "Nutrient Decision Support System (NuDSS)" for irrigated rice was used to optimize nutrient management for these two rice varieties. According to NuDSS, the optimal fertilizer N requirement for the target yields was about 150 kg/ha for Shanyou63 and about 120 kg/ha for Xieyou46, which were only about 70% of the fertilizer N application under current farmers' practice. Comparing with farmers' practice, there is great potential to increase actual rice yields and to reduce fertilizer N use rates by improving rice crop management practice in Jinhua. 相似文献