Comparing Models of Change to Estimate the Mediated Effect in the Pretest–Posttest Control Group Design

Models to assess mediation in the pretest–posttest control group design are understudied in the behavioral sciences even though it is the design of choice for evaluating experimental manipulations. The article provides analytical comparisons of the four most commonly used models to estimate the mediated effect in this design: analysis of covariance (ANCOVA), difference score, residualized change score, and cross-sectional model. Each of these models is fitted using a latent change score specification and a simulation study assessed bias, Type I error, power, and confidence interval coverage of the four models. All but the ANCOVA model make stringent assumptions about the stability and cross-lagged relations of the mediator and outcome that might not be plausible in real-world applications. When these assumptions do not hold, Type I error and statistical power results suggest that only the ANCOVA model has good performance. The four models are applied to an empirical example.     

公路自行车骑行服的研发

从研究使用对象的需求入手，对公路自行车骑行服的研发案例的全过程进行分析，对功能性服装设计的研究方法进行简略的介绍。设计过程由六部分组成，其体系化的设计手法也为仅仅着眼于服装外观造型的设计方法开阔了视野、拓展了设计的角度。     

多媒体计算机网络对作文教学的影响

多媒体计算机网络技术的应用,导致作文教学的思想观念、教学方法和教学设计的深刻变革.教师利用多媒体计算机网络的资源共享、交互和多媒体功能,可以改进教学方法,突破传统作文教学的某些弊病.     

全光纤无源耦合器件制作过程中的实践创新能力培养

结合本科生毕业设计“全光纤光功率比耦合器件的制备”的实践过程,在理论上基于光波的耦合波方程,对熔融拉锥单模光纤耦合器的功率耦合比与拉伸长度、拉伸位置和损耗的关系进行数值模拟,使本科生在毕业设计的有限时间内掌握一种基本软件工具。通过设计过程中的实践活动,学生在指导教师的科研理念引导下,利用实验室现有的设备制作出2×2型、单窗口1×2型1550 nm和1310 nm宽带耦合器, 并完成了对制备出的光纤耦合器的光功率和光谱的检测。在实践教学过程中,突出体现了知识、能力、科研素质提高和创新能力的培养。通过无源耦合器件的制备,培养了学生的实践动手能力和科研思维能力, 为今后的学习或就业奠定了良好的基础。     

Pedagogical and technological augmentation of mobile learning for young children interactive learning environments

The ubiquity and educational potential of mobile applications are well acknowledged. This paper proposes six theory-based, pedagogical strategies to guide interaction design of mobile apps for young children. Also, to augment the capabilities of mobile devices, we used a humanoid robot integrated with a smartphone and developed an English-learning app that applied the design strategies to this environment. Our observations of children's one-on-one use support the promise of the strategies and the combined use of robots and mobile devices to be a viable option to help optimize mobile learning.     

半导体PN结测温实验的设计

讨论了半导体PN结的温度特性及其测温实验的设计。可将此内容改编成工科大学物理设计性实验项目。     

碳素厂沥青烟气治理系统设计

碳素厂在生产碳阳极时，需加入一定量沥青作为粘合剂。碳阳极在焙烧时沥青转化为沥青烟气排出，一部分没有燃烧的沥青烟气直接排入大气，严重超过国家污染物排放标准，给人体健康和安全生产带来极大隐患。章在国内碳素厂沥青烟气治理先进技术的基础上，设计一套适用于中小型碳素厂沥青烟气治理的系统，使沁阳黄河碳素厂的沥青烟气实现达标排放。     

电子类教学仪器的抗振防振设计

对电子教学设备的抗振从理论和实践上进行了探讨，并介绍了电子类教学设备的抗振设计原则和方法。     

感受生活愉悦设计——论海报设计中独特创意的产生

创意是设计的灵魂,更是海报设计的关键,而独特创意的产生有其思维轨迹可寻,这为设计者在生活中去积累设计元素,寻找创意火花提供一些方式方法。     

Participatory creativities: developing a research design for children’s pastoral encounters with the natural world

ABSTRACT

In this paper, the author discusses the interrelationship between creativity, children’s experiences of the natural world and pastoral education. Based on a research design developed whilst undertaking a professional doctorate in education (EdD), and grounded in a theoretical framework of children’s rights, the author explores the creative uncertainties of collaboratively researching children’s educational experiences with nature. The paper considers the ways in which the research design supports a pastoral care agenda, whilst encouraging the emergence of ‘creative artefacts’, alongside the extent to which the focus of the research, encounters with the natural world, might be deemed pastorally minded in its own right. The children who have participated in the research then draw the paper to a close, sharing what their involvement in the project has meant to them. Images and excerpts of children’s own creative reflections are offered as illustration of the powerful confluence of the Creative and the Pastoral.