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71.
中国古代文学课程本是一门充满前贤智慧,集艺术性、知识性、趣味性、思想性于一体的课程。但是从现状看,很多学生对该课程并不满意。因此古代文学教师必须清楚认识到古代文学教学中存在的问题,适应现代环境,寻找正确的教学相长的方法以提高古代文学课程的教学质量。 相似文献
72.
随着通信技术的快速发展和通信新应用的广泛普及.高校通信类专业课程需要不断进行教学改革,建立科学的课程教学模式和实践模式,实施创新型人才培养。本文针对我校现代交换技术课程的教学实践过程.阐述了多元化课堂教学模式、多层次实践教学环节以及课程考核评定的具体措施,指出建设开放性教学资料、采用多样化课堂教学方法、培养学生的研究性学习能力和实践创新能力对专业课教学的重要性,对提升课程教学质量和培养创新型专业人才模式进行了有益探索。 相似文献
73.
采用连续标准加入法,利用标准计算图求值来测定水中氟化物浓度,该法测得的回收率,精密度均令人满意。 相似文献
74.
中国网络咨询业的现状与发展 总被引:1,自引:0,他引:1
本文在解释网络咨询概念的基础上,主要分析中国网络咨询的发展现状、存在的问题,并对中国网络咨询业的发展前景进行预测。 相似文献
75.
脑科学与类脑智能技术相互借鉴、相互融合代表了未来脑科学与类脑智能研究的新趋势。中科院在脑科学研究上具有深厚积累和特色优势,率先启动了"脑功能联结图谱"战略性先导科技专项(B类),选择感知觉、学习记忆等几种重要大脑功能,绘制其神经环路图谱,解析其信息处理加工规律;率先在脑科学和智能技术两大领域进行实质性融合,在先导专项中扩充了类脑智能研究内容,成立了中科院脑科学与智能技术卓越创新中心,全面推进脑科学与类脑智能研究深度融合,为我国智能产业的发展提供科技引领与支撑。在分析国际脑科学与类脑智能发展态势的基础上,文章阐述了中科院在脑科学与类脑智能研究方面的部署,提出了进一步加强脑科学与智能技术融合的举措与建议。 相似文献
76.
南海北部早第三纪流沙港组孢粉组合 总被引:1,自引:0,他引:1
In the northern part of South China Sea, including Tonkin Gulf, Hainan lsland,
Leizhon Peninsula and some basin of Guangdong Province, Paleogene deposits are
composed of three formations: the Weizhon, the Liushagang and the Changliu forma-
tions arranged in descending order. The paper on the palynoflora of the Weizhon
Formation (early and middle Oligocene) is in press[2]. This paper deals only with the
palynoflora of the Liushagang Formation, with may be divided into four main stages:
The first stage is represented by Monocolpollenites tranquillus and Crassoretitri-
letes sp., assigned to early Eocene The second stage is characterized by Salixipollenites,
Momipites triletipollenites and Operculumpollis. Its age is middle Eocene. The third
stage is dominated by some species of Quercoidites and Ulmipollenites and also
characterized by the presence of Platycaryapollenites and Prominangularia dogying-
ensis, This sporo-pollen assemblage suggests a late Eocene in age. The fouth stage is
marked by profusion of some alga of brockish water, such as Rugasphera corrugia,
Granodiscus gronulatus and some pollen types of Liquidambarpollenites minutus,
Multiporopollenites puctatus and Tricolporopollenites minutus. The age of the last
stage is assigned to early oliocene.
In generaly, the palynoflora of the Liushagang Formation is quite different from
that of the Weizhou Formation. The main types of spores and pollen are common
with those found in Europe and North America of the same age, while the Weizhou
Formation has many elements common both in this region and Borneo.
During Eocene and early Oligocene this area was of continental phase with
brackish basins. At the beginning the climate was rather moist and hot, but then itbecame moist and warmtemperate. 相似文献
77.
Xiangjie Kong Mengyi Mao Huizhen Jiang Shuo Yu Liangtian Wan 《Journal of Informetrics》2019,13(3):887-900
Collaboration usually has a positive effect on researchers’ productivity: researchers have become increasingly collaborative, according to recent studies. Numerous studies have focused on enhancing research collaboration by recommendation technology and measuring the influence of researchers. However, few studies have investigated the effect of collaboration on the position of a researcher in the research social network. In this paper, we explore the relationships between collaboration and influence by social analytical methods, which are pertinent to analyzing the network structure and individual traits. We evaluate three aspects of the researchers’ influence: friendship paradox validation, social circle, and structure of a researcher's ego network. Furthermore, the ”six degrees of Bacon number” theory, generalized friendship paradox, and triadic closure theory are introduced to support our analysis. Experimental results show that collaboration can help researchers increase their influence to some extent. 相似文献
78.
Chao Ai Wei Gao Lijuan Chen Jiawei Guo Xiangdong Kong Andrew Plummer 《Journal of The Franklin Institute》2021,358(1):296-320
The requirement for An electrical grid-connected wind turbine is that the synchronous generator speed is stable within a required speed range for the electrical grid. In this paper, a hydraulic wind turbine (HWT) system is considered, and the working principle and working conditions of the HWT are introduced. A novel speed control method is proposed in this paper, using both a proportional flow control valve and a variable displacement motor, which are adjusted in combination to control the speed of the HWT. By establishing a state space model of the HWT and solving the nonlinear system with a feedback linearization method, a bivariate tracking controller is constructed to realize accurate speed control under fluctuating wind speed and the load disturbance conditions. The effectiveness of the control method is verified by simulation, but experimental results highlight problems with the method. The theoretical controller is simplified to reduce sensitivity to measurement noise and modeling error. The control effect has been improved to some extent, but it is limited. Based on these results, combined with the sliding mode variable structure control method and the feedback linearization method to solve the problem of measurement noise and modeling error, and the effectiveness of the control law is finally verified experimentally. It lays a theoretical foundation for the practical application of HWT. 相似文献
79.
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