该实验设有三个不同的房间，先关闭一个房间，让小鼠在其余两个房间中自由活动，一个小时后打开关闭的房间，让小鼠在三个房间中自由活动，观察它们进入新房间的次数和停留时间，实验组老年鼠进入新房间的比例为40%，平均停留时间为130秒，模型对照组老年鼠进入新房间的比例为22%，停留时间为70秒/。青年鼠进入新房间比例为38%，停留时间为120秒。
本期刊·见为诸位介绍力学领域期刊Mechanics Based Design of Structures and Machines。除了对期刊进行详尽的介绍外/，还将向您介绍刊内近三年高被引文章，以及近一年高阅读文章：
The nanoplates have been used extensively in electronic devices, during the working process they can be affected by external forces. To enhance the working performance of mechanical systems, flexoelectric effects are usually added, therefore, it is necessary to study the mechanical behavior of these material structures under the effect of these effects. This is the first research to examine the vibration response and static buckling of variable flexoelectric nanoplates using the FEM and novel shear deformation theory type hyperbolic sine functions, where the thickness is adjusted by linear and nonlinear rules. This is a simple theory, which does not need any shear correction factors, while the mechanical responses of the structures are still described exactly. The numerical results of this work are compared with those of the analytical approach and other methods. Then, the influences of geometrical and material parameters on the free vibration and static bucking of the structure are explored. The data shows that the flexoelectric effect has a strong effect on the free vibration and static bucking behavior as well as the vibration mode shapes of the nanoplates. The working performance is increased when taking into account the effect of flexoelectricity. This work also shows that for each changing rule of plate thickness, the flexoelectric effect also significantly changes the mechanical response of the plate. This is an important suggestion in the design and use of plate structures in engineering practice.
Figure 1. Representation of the particle geometries used as reinforcements (images are not to scale).
日前，《中国应用型期刊评价研究报告（2023版）》发布，由教育部主管、中国教育电视台主办的《教育传媒研究》杂志被该报告评为中国应用型核心期刊。
近年来，中国经济学研究取得了显著的进展。作为这一领域的重要期刊，China Economic Journal在最新的《期刊引证报告》（Journal Citation Reports™，简称JCR™）中，影响因子首次进入JIF一区，成为经济学研究领域的一匹强势黑马。
技术不仅仅是一种工具，更是一种思维方式。在课程设计中，应该充分考虑技术的应用，将技术与课程相互融合，从而达到更好的教学效果。例如，在科学课程中，可以通过虚拟现实技术让学生更加深入地了解科学原理，提高学生的学习兴趣和效果。在语言课程中，可以通过在线协作工具让学生进行跨国交流，提高学生的语言应用能力。
2.完善技术设施。学校应该加大对技术设施的投入，为学生提供更加完善的技术学习环境。同时，应该注重技术的更新和维护，确保技术的正常运行。
随着社会的快速发展和教育的不断进步，学前教育作为教育体系的重要组成部分，越来越受到人们的关注。学前教育不仅仅是知识的传授，更是儿童自主性培养和教师角色定位的重要阶段。本文将从儿童自主性的发展、教师在儿童自主性培养中的作用以及教师在学前教育中的角色定位三个方面进行探讨。
课程改革的深度主要体现在对课程内容的更新和教学方法的创新上。传统的教学内容往往侧重于知识的灌输，而现代课程改革则更加注重学生的主体性和实践性。这要求教育者不仅要关注知识的传授，更要关注学生的学习过程和学习方法。