Graphical evaluation of robust parameter designs based on extended scaled prediction variance and extended spherical average prediction variance

For any response surface design, there are locations in the design region where responses are estimated well and locations where estimation is relatively poor. Consequently, graphical evaluation—such as variance dispersion graphs and the fraction of design space—is used as an alternative to a single-valued criterion. Such plots are used to investigate and compare the prediction capabilities of certain response surface designs currently available to the researcher. In this article, we propose the extended scaled prediction variance and extended spherical average prediction variance as prediction methods. We also illustrate how graphical methods can be employed to evaluate robust parameter designs.     

幼儿园园本课程智库建设与开发

With the introduction of the “Two-Child Policy,” the resource allocation of kindergartens has been unprecedentedly challenged by many factors such as time, space, and geography. This study starts with the content of the curriculum resources of kindergarten and discusses the construction and development of the think tank of kindergarten curriculum in the context of the big data era. Based on the experience of educational think tank at home and abroad, the concept of think tanks in the kindergarten curriculum is clarified. Under the premise of excavating the four characteristics of the kindergarten-based curriculum think tank, including cross-age, knowledge sharing, interaction, and cultural inheritance and development, the ideas and core elements of the kindergarten-based curriculum think tank construction is proposed. The first one is the integration of the think tank resources of the kindergarten curriculum; the second one is the collection and application of practical results of the think tank of the kindergarten curriculum; the third one is the influence and evaluation of the think tank of the kindergarten curriculum; the fourth is the cultural heritage and development of the think tank of the kindergarten curriculum. It is expected to provide theoretical and practical references for the resource integration, construction, and promotion of children’s think thank and kindergarten curriculum in the future.     

从思想史的发展看西方天地之学传入中国的意义

中国传统的天地观念为"天圆地方",认定中国作为礼义之邦,居天之中央,由此派生出华夏中心论。这种观念虽然受到过明清之际西方传教士带来的算历及地舆之学的冲击,但并未动摇其基础,于是又派生出西学中源的虚骄观念和中体西用的保守思潮。而鸦片战争前后所传来的西方天地之学,带有彻底的革命性质:一方面它将天地人视为统一的宇宙演化过程,不仅地球无中心,整个宇宙亦无中心,居于其中的人类正是宇宙长期演化的结果;另一方面,由于它彻底埋葬了中世纪的神学目的论,也带动了民主思想的大发展。因而,西方天地之学的传入,使明清之际萌发的民主、民生思想顿时成长起来而成为中国思想发展的主流。从《海国图志》和《瀛寰志略》的问世可见,西方天地之学的传入对中国思想界产生了深刻的影响。     

球体散射场的极化特性分析

应用解析方法给出了球体在完全极化平面波照射下散射场的极化散射矩阵表示式，通过极化比分析了球体散射场的极化特性。     

球型支座转动机构研究及设计

针对球型支座在转动时,侧面滑动副由面接触变为线接触,易带来摩擦副表面破坏的问题,为横向活动支座增加了转动机构,该转动机构主要是在上、下支座板之间设置转动块,转动块一侧固定滑动材料与上支座板对摩,实现支座的横向位移,另一侧与下支座板的圆弧凸缘接触,实现支座的转角要求。该转动机构不仅避免了支座有转角时摩擦副的破坏,同时也满足支座的位移和转角要求。通过对支座运动及受力状态的分析,找出了转动机构的受力最不利状态,并对此状态下的上支座板挡块、滑板及接触凸缘进行了应力计算,计算结果均满足设计要求。     

基于ANSYS Workbench的胶带硫化罐吊装机械手动力学研究

为了研究胶带硫化罐吊装机械手整机的动力学特性,应用有限元分析软件ANSYS Workhench建立有限元模型并 对其进行了静态结构分析、模态分析和谐响应分析,得出了吊装机械手的静态结构应变、前6阶模态和在额定负载作用 下的谐响应特性。通过对结果的分析,找出了该机械手Z轴的刚度和伺服电机的运动参数是影响该机械手稳定性的主 要因素,为后续优化设计和控制系统设计提供了理论依据和参考。     

现代智库事业的发展历程及特征研究——基于学术研究视角

学术研究是解决科学问题和社会难题、促进科学与社会均衡发展的重要途径,学术研究活动的规模与其所对应的社会事业规模、发展阶段等均存在一定的对应关系.文章在揭示该对应关系的基础上,通过对WOSTM收录的“智库”主题的学术研究文献数量的趋势变化分析,将全球现代智库事业的发展历程划分为三个不同阶段,即形成初期、低速调整期、高速成长期,并通过词频分析和内容分析的方法对现代国际智库事业三个阶段的发展特征进行揭示,最后对中国现代智库事业的发展现状进行分析.通过对比分析得出,中国现代智库事业目前虽处于起步阶段,但正在沿着一条跨越式发展道路加速前进.