依恋研究述评

依恋对个体的社会性和个性的发展有着极为重要的意义,从依恋涵义的演化入手,介绍了依恋研究的国内外概况,并分别探讨了依恋的内部工作模式、依恋的影响因素以及依恋对认知和社会性发展的影响等几个问题,最后提出目前依恋研究中存在的争议,试图从整体上对依恋研究有一个明晰的把握。     

Study on the relationship between adjustable operational parameters and noise of single-cylinder diesel engine

A Model S195 (8.8 kW) single cylinder was used in this study to determine the effect of four operational parameters, i. e. intake valve close angle, exhaust valve open angle, fuel delivery angle and fuel injection pressure on noise. Single factor and multi-factor quadratic regressive orthogonal methods were adopted in the experiments to find the relationship between the four parameters and noise. By means of optimization technique, the optimum operational parameters for two working conditions of the engine were selected and the test results showed that optimum adjustment could reduce noise by 2–4 dB. Project supported by Agricultural Ministry of China     

汽车防盗系统的维修

以桑塔纳2000GSi型轿车为例，说明了汽车防盗系统的结构，工作原理以及发生故障时的检测方法，分析了常见故障发生的原因，产生的后果和故障的排除。     

How to foster STEM learning during Covid-19 remote schooling: Combining virtual and video experiments

Understanding scientific concepts is a fundamental aim of science education. Conceptual understanding can be fostered through inquiry learning with experiments. However, during the Covid-19 pandemic school closures hands-on experiments could hardly be realized. Fortunately, digital technologies allow for conducting experiments virtually by using interactive simulations or observing video recordings of hands-on experiments. In the present study, 154 seventh graders in remote schooling were involved in inquiry learning using either a combination of virtual and video experiments in two different orders or only virtual experiments. We hypothesized that in general inquiry learning fosters students' conceptual understanding in physics, which could be confirmed. Moreover, we expected the combinations to be more effective than learning with virtual experiments only due to the complementary roles of the prior, which was, however, not the case. We conclude that virtual and video experiments can be recommended to teachers if hands-on experimentation is not possible.     

职业教育推进工学结合的制度保障

建立健全我国工学结合的制度保障体系,应修改完善《职业教育法》,明晰工学结合人才培养模式的法律地位;建立健全政策激励机制,提高企业持续参与工学结合人才培养的积极性;建立与教学和就业指导有机联系的工学结合模式运作机制;建立多渠道资金投入体系和职业教育学生资助制度;职业院校必须在合同基础上实施工学结合人才培养模式。     

Working memory updating as a predictor of academic attainment

There is growing evidence supporting the importance of executive functions, and specifically working memory updating (WMU), for children’s academic achievement. This study aimed to assess the specific contribution of updating to the prediction of academic performance. Two updating tasks, which included different updating components, were administered to 97 fourth-grade children. The keeping track task involves retrieval and substitution of information, while the numerical updating task also includes a transformation component. Academic attainment was assessed through standardised tests of verbal comprehension, arithmetic operations, mathematical problems and an assessment made by the teacher. The relative contribution to academic attainment, of the updating measures and measures related to intelligence, was compared. Results showed that both updating tasks are predictive measures of academic attainment, although the numerical updating task appeared to be a more consistent predictor of children’s performance. The relationship between updating and academic attainment is discussed, and possible educational implications are considered. The role of the transformation component of WMU is highlighted. This component could make a distinct and independent contribution to performance and, by extension, could be particularly relevant to the prediction of academic achievement.     

论美术创作中的技术素质

本文主要阐明两方面的问题，一是美术创作中的技术素质存在的问题；二是美术创作中如何提高技术素质问题。     

使用ASP开发WEB站点及安全性分析

“ASP” (ActiveServerPages)作为一种典型的服务器端网页设计技术 ,使用它可以创建和运行动态、交互的Web服务器应用程序 同时Access数据库作为微软推出的以标准JET为引擎的桌面型数据库系统 ,由于具有操作简单、界面友好等特点 ,一度使ASP +ACCESS的建站理念成为当前大部分建站人员的首选 但因ACSESS数据库易被下载和ASP网页设计过程中会出现各种问题 ,会使ASP的站点带来多种安全隐患 ,使得一些非法入侵人员有机可乘 从“ASP工作机理”、“使用ASP构建WEB站点”、“ASP的安全隐患”及“安全处理对策”等四个方面来阐述如何使用ASP开发网站、开发过程中可能遇到的各种问题以及处理这些问题的方法     

现代远程高等教育运行机制的构建

本文从现代远程高等教育运行机制的内涵及功能出发,讨论了影响现代远程高等教育运行机制构建的政府、市场、社会、学校等四大要素,重点阐述了现代远程高等教育运行机制中的目标机制、准入和导出机制、竞争机制、利益分配机制和监控机制。     

基于B/S架构的部门工作计划系统的设计与实现

研究了在.Net平台下基于B/S架构的部门工作计划系统的开发框架,介绍了系统实现的功能模块,并讨论了应用C#开发部门工作计划系统需要解决的关键技术问题。