用“英特尔@未来教育”理念实施小学数学“自主、合作、探究”研究性教学

英特尔@未来教育理念是一种以教师为主导,学生为主体,实施研究性课题和问题导向式的学习模式,它为我们提供了一种崭新自主、合作、探究的学习模式。本文结合教学实例从小学数学新课程倡导研究性学习的探究性、自主性、开放性、合作性等4个方面探索了怎样在平时数学教学中运用英特尔未来教育理念。     

A mobile augmented reality system to conduct electrical machines laboratory for undergraduate engineering students during the COVID pandemic

Education and Information Technologies - This paper reported an AR based teaching method adopted during the movement control period for undergraduate engineering students to perform electrical...     

Secondary Students’ Stable and Unstable Optics Conceptions Using Contextualized Questions

This study focuses on elucidating and explaining reasons for the stability of and interrelationships between students’ conceptions about Light Propagation and Visibility of Objects using contextualized questions across 3 years of secondary schooling from Years 7 to 9. In a large-scale quantitative study involving 1,233 Korean students and 1,149 Singaporean students, data were analyzed from responses to the Light Propagation Diagnostic Instrument consisting of four pairs of items, each of which evaluated the same concept in two different problem situations. Findings show that only about 10–45 % of students could apply their conceptions of basic optics in contextualized problem situations giving rise to both stable and unstable alternative conceptions. Students’ understanding of Light Propagation concepts compared with Visibility of Objects concepts was more stable in different problem situations. The concepts of Light Propagation and Visibility of Objects were only moderately correlated. School grade was not a strong predictive variable, but students’ school achievement correlated strongly with their conceptual understanding in optics. The teaching and learning approach and education systems in the two countries may have had some influence on students’ conceptual understanding.     

Academic social bookmarking: An empirical analysis of Connotea users

Three groups of social bookmarking users, namely experienced users, users with moderate level of experience, and novice users, were investigated, in terms of their reported tagging behaviors, perceived usefulness of social bookmarking in information discovery and management, and perceived usefulness of the bookmarking features provided. Based on the empirical analysis of the Connotea users, who are primarily in academia, the study shows that experienced academic users generally prefer to use social bookmarking while moderately experienced and novice users still prefer to use the traditional bookmarking methods, such as creating and using bookmarks on a dedicated computer. Experienced academic users were also found to create more tags per bookmark comparing to the other two groups. Most novice academic users, however, only created one tag per bookmark, which just met Connotea's minimum requirement. Surprisingly different from the collaborative design nature of the social bookmarking systems, the study finds that our participants, particularly experienced academic users, prefer to create and use their own bookmarks rather than sharing bookmarks created by others. In fact, experienced users have significantly higher frequency (once every two weeks) of creating bookmarks than the other two groups (once a month or less). In addition, website design features and functions, such as automatic collection of bibliographic information, are regarded by all participants as helpful for information discovery. The in-depth examination and discussion of the opinions of Connotea users may be useful for further improvement of the design features and usage applications, particularly for academic social bookmarking websites. The results may also have potential implications to the future development of social bookmarking services in general.     

中国依法治国进程中的法律文化建设

加强社会主义法律文化建设是依法治国的内在要求。本文从法律文化的涵义及功能出发,分析了当代中国法律文化的结构。指出建设社会主义法律文化对依法治国的深远意义,并对建设社会主义法律文化的途径作了探讨。     

Magnetically encoded 3D mesostructure with high-order shape morphing and high-frequency actuation

Inspired by origami/kirigami, three-dimensional (3D) mesostructures assembled via a mechanics-guided approach, with reversible and maneuverable shape-morphing capabilities, have attracted great interest with regard to a broad range of applications. Despite intensive studies, the development of morphable 3D mesostructures with high-order (multi-degree-of-freedom) deformation and untethered high-frequency actuation remains challenging. This work introduces a scheme for a magnetically encoded transferable 3D mesostructure, with polyethylene terephthalate (PET) film as the skeleton and discrete magnetic domains as actuation units, to address this challenge. The high-order deformation, including hierarchical, multidirectional and blending shape morphing, is realized by encoding 3D discrete magnetization profiles on the architecture through ultraviolet curing. Reconfigurable 3D mesostructures with a modest structural modulus (∼3 GPa) enable both high-frequency (∼55 Hz) and large-deformation (∼66.8%) actuation under an alternating magnetic field. Additionally, combined with the shape-retention and adhesion property of PET, these 3D mesostructures can be readily transferred and attached to many solid substrates. On this basis, diverse functional devices, including a switchable colour letter display, liquid mixer, sequential flashlight and biomimetic sliding robot, are demonstrated to offer new perspectives for robotics and microelectronics.     

初等教育支出绩效的实证分析——以我国东部沿海七省市为例

加强教育支出管理并实现支出效益最大化是教育支出改革的一项重要内容.只有对教育支出绩效进行客观评价,才能够形成进一步改革和优化的思路.本文以我国东部沿海七省市初等教育为样本,对我国公共教育支出绩效进行地区比较后发现.这一区域初等教育发展仍存在不平衡现象.而要消除这一现象,就应加强教育支出绩效管理,同时应不断完善服务于社会公共事务的教育公共财政体制.     

深化民族团结进步教育的几个基本问题

铸牢中华民族共同体意识是推动我国新时代民族团结进步教育高质量发展的主线和“纲”。同时,铸牢中华民族共同体意识也提出了深化民族团结进步教育的要求。在铸牢中华民族共同体意识视域下开展深化民族团结进步教育的背景、含义、意义、价值旨归与实施路径等问题的研究,以此为深化民族团结进步教育提供根本遵循、认识基础和学理依据。     

(NH4)3B11PO19F3: a deep-UV nonlinear optical crystal with unique [B5PO10F]∞ layers

Deep-ultraviolet (DUV) nonlinear optical (NLO) crystals that can extend the output range of coherent light below 200 nm are pivotal materials for solid-state lasers. To date, KBe₂BO₃F₂ (KBBF) is the only usable crystal that can generate DUV coherent light by direct second harmonic generation (SHG), but the layered growth habit and toxic ingredients limit its application. Herein, we report a new fluoroborophosphate, (NH₄)₃B₁₁PO₁₉F₃ (ABPF), containing four different functional units: [BO₃], [BO₄], [BO₃F] and [PO₄]. ABPF exhibits a KBBF-like structure while eliminating the limitations of KBBF crystal. The unique [B₅PO₁₀F]_∞ layers enhance ABPF’s performance; for example, it has a large SHG response (1.2 × KDP) and a sufficient birefringence (0.088 at 1064 nm) that enables the shortest phase-matching wavelength to reach the DUV region. Meanwhile, the introduction of strong B-O-P covalent bonds decreases the layered growth habit. These findings will enrich the structural chemistry of fluoroborophosphate and contribute to the discovery of more excellent DUV NLO crystals.     

保定师专毕业生能力情况的调查报告

在问卷调查的基础上,对保定师专的毕业生能力情况作出了评价,分析了存在的问题,提出了转变观念,增强创新意识,深化教学改革,加强社会实践,增加投入,创造条件,培养师专生综合能力的建议。