排序方式： 共有443条查询结果，搜索用时 15 毫秒
81.
杜庆龙 《佳木斯教育学院学报》2012,(8):264-265
题元理论是近些年来在现代语言学理论研究中出现的热点课题之一。本文概述题元理论并解释分析了题元角色理论在词法句法层面的应用,并指出了其存在的不足。 相似文献
82.
横县是我国最大的茉莉花生产基地和茉莉花茶加工基地,有着发展茉莉花旅游得天独厚的资源优势。在传统茉莉花产业发展遇到市场瓶颈,产业发展亟须转型之时,茉莉花旅游为其提供了一条切实可行的路径。基于茉莉花观赏、食药、民俗、文艺旅游价值的解析,探讨横县茉莉花旅游发展存在的问题,并提出横县茉莉花旅游可持续发展的对策。 相似文献
83.
爱情是大学生人格发展与成熟阶段的重要内容,对其人生发展具有重大影响,探索大学生的爱情本质对于帮助其成长具有重要意义.本研究采用质与量相结合的研究方法,从爱情类型学的角度探索出了大学生的27种爱情故事类型、核心内涵及其特征,并进行了不同文化的比较研究,然后在此基础上回答了“爱情的三大疑问”,从中对大学生的爱情本质特征做了较全面、深刻的分析,有助于大学生、教育与管理工作者更加科学地认识爱情、理解爱情,提升心理咨询的科学化水平. 相似文献
84.
毕波 《贵阳师范高等专科学校学报》2009,4(2):64-68
《红楼梦》成功地塑造了许多极富特色的“媒妁”形象,其中“亲属为媒”、“市井之人为媒”,反映了封建伦理与社会礼教束缚下的封建婚姻形态;而“丫鬟为媒”、“以物为媒”、“自媒”,则反映了青年男女对于自由爱情的追求与向往。“媒妁”形象反映了人们对待婚姻问题的思想倾向,包含着深邃的文化意义。 相似文献
85.
《Journal of The Franklin Institute》2023,360(11):7180-7205
This paper studies the problem of finite-time formation tracking control for networked nonaffine nonlinear systems with unmeasured dynamics and unknown uncertainties/disturbances under directed topology. A unified distributed control framework is proposed by integrating adaptive backstepping control, dynamic gain control and dynamic surface control based on finite-time theory and consensus theory. Auxiliary dynamics are designed to construct control gains with non-Lipschitz dynamics so as to guarantee finite-time convergence of formation errors. Adaptive control is used to compensate for uncertain control efforts of the transformed systems derived from original nonaffine systems. It is shown that formation tracking is achieved during a finite-time period via the proposed controller, where fractional power terms are only associated with auxiliary dynamics instead of interacted information among the networked nonlinear systems in comparison with most existing finite-time cooperative controllers. Moreover, the continuity of the proposed controller is guaranteed by setting the exponents of fractional powers to an appropriate interval. It is also shown that the improved dynamic surface control method could guarantee finite-time convergence of formation errors, which could not be accomplished by conventional dynamic surface control. Finally, simulation results show the effectiveness of the proposed control scheme. 相似文献
86.
《Journal of The Franklin Institute》2023,360(12):8398-8415
In this article, we primarily investigate practical exponential stability of switched homogeneous positive nonlinear systems (SHPNSs) that have partial unstable modes and perturbation. First of all, the max-separable Lyapunov function (MSLF) technique and a special pre-setting switching sequence are used to define a number of significant stability conditions that ensure the state trajectories of the system converge to a confined region in continuous-time and discrete-time domains. In addition, the key results include several earlier findings as special situations and can be directly applied to general switched systems, not necessarily positive. Finally, two important instances are provided to further illustrate the validity of the theoretical findings. 相似文献
87.
高校贫困大学生心理问题之我见 总被引：7，自引：0，他引：7
近年来,贫困大学生由于多方面的原因,人数增加,其心理问题也愈益突出。他们不仅需要外界的经济帮助,更需要心理上的关怀。因此,寻求有效对策,帮助他们战胜困难,培养自强自立的意识,促进其全面、健康的发展,是高校教育和管理工作者面临的一项重要任务。 相似文献
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89.
互动式教学模式已逐渐成为高校教学领域中新的教学模式,但当前对于互动式教学模式还存在认识上的误区和实践中的不足。构建以学生为主体的多元互动模式,探讨和分析这一框架之内的互动主体、互动方式、互动过程以及互动空间的特点,同时将此模式应用于教学实践中,将会切实提高高校教学质量。 相似文献
90.
为解决传统数据交换存在成本高、效率低的问题,本文在对不同数据处理方法比较分析基础上,对企业如何利用EDI技术实现数据交换进行了设计。研究认为EDI技术可更好地提高企业信息系统数据处理能力,在未来的电子商务领域中应用前景广阔。 相似文献