The resonance Interaction or two-state atoms with single mode rleld is described theoretically byusing the semi-classical theory and Jaynes-Cummings model. The nonlinear characteristics of this system arecalculated by...The resonance Interaction or two-state atoms with single mode rleld is described theoretically byusing the semi-classical theory and Jaynes-Cummings model. The nonlinear characteristics of this system arecalculated by using FFT and Runge-Kutta methods. The chaotic strange attractors in this system are obtainedfrom the numerical results.展开更多
The Max’s equation of self-focusing in laser-plasma interaction due to the pondermotive force has been discussed and its physical meaning of the assumption has been predicted. The characteristics of selffocusing due ...The Max’s equation of self-focusing in laser-plasma interaction due to the pondermotive force has been discussed and its physical meaning of the assumption has been predicted. The characteristics of selffocusing due to the pondermotive force with different initial situations have been analyzed through the numerical calculation.展开更多
State-owned enterprises(SOEs) serve as an important material and political basis for socialism with Chinese characteristics. SOEs must be reformed in accordance with Xi Jinping Thought on Socialist Economy with Chines...State-owned enterprises(SOEs) serve as an important material and political basis for socialism with Chinese characteristics. SOEs must be reformed in accordance with Xi Jinping Thought on Socialist Economy with Chinese characteristics for a new era, which is the fundamental basis for maintaining the nature and direction of reform for SOEs. Reforms must be built on the fundamental standpoint with people at the center, and aimed at emancipating, developing and protecting productive forces based on the principles of justice and fairness, which is also the direction for Chinese SOEs reform in the new era. Adherence to the public ownership of state-owned assets in the form of value and its market-oriented management in the form of use-value is not only the objective requirement of a production mode adapting to the growth of productive forces, but also the logic of SOEs reform in the new era. Meanwhile, SOEs need to highlight the top-level designs of governmental systems in the reform process, giving e ective play to the leading and guiding roles of Xi Jinping Thought on Socialist Economy with Chinese characteristics for a new era.展开更多
Theoretically based on historical materialism,the historical initiative of the Communist Party of China(CPC)is a precious character of creating new prospects amid changing circumstances consciously and proactively to ...Theoretically based on historical materialism,the historical initiative of the Communist Party of China(CPC)is a precious character of creating new prospects amid changing circumstances consciously and proactively to acquire benefits for Chinese people.Integrated into its centenary history and showing highlights in different historical periods,the CPC’s historical initiative features dialectical unity between problem orientation and mission pursuit,upholding fundamental principles and breaking new ground,regularity and consciousness,as well as the leadership of the CPC and the pioneering spirit of the people.To accomplish the Second Centenary Goal and advance national rejuvenation,the CPC will follow the path of socialism with Chinese characteristics under the guidance of Marxism,stay committed to achieving national rejuvenation,unite and rely on the people,and stimulate the spirit of innovation and creation,thereby pooling more proactive spiritual strengths to make greater contributions in the new era.展开更多
目的:基于知识图谱进行可视化分析,探讨冠状病毒治疗领域研究进展。方法:检索科学网(Web of Science)核心合集数据库建库至2020年2月15日发布的冠状病毒治疗领域相关文献。利用Web of Science数据库文献分析工具统计年度发文趋势,采用VO...目的:基于知识图谱进行可视化分析,探讨冠状病毒治疗领域研究进展。方法:检索科学网(Web of Science)核心合集数据库建库至2020年2月15日发布的冠状病毒治疗领域相关文献。利用Web of Science数据库文献分析工具统计年度发文趋势,采用VOSviewer软件进行国家、研究机构、作者关系分析及主题词聚类和密度分析;采用HistCite软件筛选重要文献并绘制热点演进进程;采用CiteSpace软件进行主题词爆发点分析,挖掘冠状病毒治疗领域的前沿和热点。结果:共检索到1747条数据,排除17条重复数据,最终纳入1730条数据进入可视化分析。发文量分析显示,冠状病毒治疗领域相关文献在2003年和2012年后均出现上升,从2014年开始发文量维持在高位。国家分布显示,开展冠状病毒治疗研究的国家主要为美国(613篇)、中国(582篇)、德国(122篇)、加拿大(99篇)等,且各国之间合作密切。研究机构分布显示,在冠状病毒治疗领域中国科学院发文量位居榜首(82篇),中国香港大学(74篇)、中国香港中文大学(58篇)紧居其后,其次是美国国家过敏和传染病研究所(37篇);且各机构之间合作密切。作者分布显示,高产作者美国有2位(Ralph S.Baric 21篇、Kuochen Chou 17篇),中国有2位(Yuen Kwok-yung 17篇、Jiang Shibo 16篇),荷兰有1位(Eric J.Snijder 17篇);作者聚类分析显示,冠状病毒治疗领域研究者关注的课题主要集中在反向遗传学、呼吸道感染、受体结合结构域等方面,且所属团队成员相互协作,团队间交流密切。高被引论文分析显示,冠状病毒治疗领域被引频次TOP 15论文主要来自于中国、美国、荷兰等国家;文献内容代表不同时期该领域前沿及热点,研究热点主要为阻止病毒吸附、抑制病毒基因的核酸复制、转录和翻译等;主题词主要分为三大类,即冠状病毒流行病学、基础研究及药物开发,其中基础研究与药物开发关联性较强;关键词爆发点分析显示,1991、1996、2002年分别出现时间相关性爆发点,并且以"诊断""序列"为持续热点。结论:通过知识图谱可视化分析能较好地反映冠状病毒治疗领域研究的发展趋势和热点。目前冠状病毒治疗领域受重视程度呈现周期性改变,与不同时期的新型冠状病毒暴发相关,国家、研究机构、作者间密切联系,治疗热点集中于阻止病毒吸附、抑制病毒基因的核酸复制、转录和翻译等方面,并以此开发药物新靶点。展开更多
文摘The resonance Interaction or two-state atoms with single mode rleld is described theoretically byusing the semi-classical theory and Jaynes-Cummings model. The nonlinear characteristics of this system arecalculated by using FFT and Runge-Kutta methods. The chaotic strange attractors in this system are obtainedfrom the numerical results.
文摘The Max’s equation of self-focusing in laser-plasma interaction due to the pondermotive force has been discussed and its physical meaning of the assumption has been predicted. The characteristics of selffocusing due to the pondermotive force with different initial situations have been analyzed through the numerical calculation.
基金Key Program of the Ministry of Education(15JZD012)Youth Foundation of the Ministry of Education(16YJC790016)China Postdoctoral Science Foundation(2016M602782)
文摘State-owned enterprises(SOEs) serve as an important material and political basis for socialism with Chinese characteristics. SOEs must be reformed in accordance with Xi Jinping Thought on Socialist Economy with Chinese characteristics for a new era, which is the fundamental basis for maintaining the nature and direction of reform for SOEs. Reforms must be built on the fundamental standpoint with people at the center, and aimed at emancipating, developing and protecting productive forces based on the principles of justice and fairness, which is also the direction for Chinese SOEs reform in the new era. Adherence to the public ownership of state-owned assets in the form of value and its market-oriented management in the form of use-value is not only the objective requirement of a production mode adapting to the growth of productive forces, but also the logic of SOEs reform in the new era. Meanwhile, SOEs need to highlight the top-level designs of governmental systems in the reform process, giving e ective play to the leading and guiding roles of Xi Jinping Thought on Socialist Economy with Chinese characteristics for a new era.
文摘Theoretically based on historical materialism,the historical initiative of the Communist Party of China(CPC)is a precious character of creating new prospects amid changing circumstances consciously and proactively to acquire benefits for Chinese people.Integrated into its centenary history and showing highlights in different historical periods,the CPC’s historical initiative features dialectical unity between problem orientation and mission pursuit,upholding fundamental principles and breaking new ground,regularity and consciousness,as well as the leadership of the CPC and the pioneering spirit of the people.To accomplish the Second Centenary Goal and advance national rejuvenation,the CPC will follow the path of socialism with Chinese characteristics under the guidance of Marxism,stay committed to achieving national rejuvenation,unite and rely on the people,and stimulate the spirit of innovation and creation,thereby pooling more proactive spiritual strengths to make greater contributions in the new era.
