论如何理解均势含义

均势概念的由来历史悠久,在17世纪中叶的欧洲得到广泛的讨论和应用,随着一战后国际关系学科的建立,均势这一概念逐渐被赋予了更广泛、更深层次和更系统的理论解读,均势的内涵也因此趋于精细化、复杂化、模糊化,导致对均势内涵的理解至今尚未存在一个认定的解释标准。本文从梳理均势的渊源和均势的内涵着手,首先厘清均势概念的由来,随之阐述均势在国际关系（政治）中所被赋予的丰富内涵,并从国际体系的、国家的和二者中间的三个层次角度塑造一个理解均势内涵的基本模式,试图以此规范对均势含义的理解。     

基于SPCE061A智能磁性液体表观密度仪控制系统

介绍以SPCE061A单片机为控制器的磁性液体表观密度仪控制系统,用以满足工业设计中复杂的数据采集需要。该系统由SPCE061A单片机控制,通过力敏传感器单元与PC系统通信,设计数据处理方法并编写相应的计算程序和交互式的窗体界面,用户可根据实际测量要求对实测软件进行设置,从而实现对实验数据读取、处理和曲线绘制、显示、打印、保存等功能。同时,用户可远程登录计算机,进入系统设置实测软件,远程进行数据采集,并能得到实时的采集结果,故系统具有扩展性。该系统控制简单、成本低,适用于教学和科研中的数据采集。     

Studying children's knowledge base of one-sided levers as force amplifiers

Attention to core concepts in science and engineering in early education has grown recently, and understanding levers as force amplifiers can be recognized as one of these. Previous studies focused on two-sided levers and do not provide sufficient information about children's knowledge of levers as force amplifiers, nor about their learning and its support from an education perspective. It is important to consider load distance and force distance separately, as may be done in one-sided levers, to understand children's knowledge of levers as “simple machines” thoroughly. Moreover, children's zone of proximal development and the possibilities to foster their knowledge should be explored to understand important features of teaching. We thus directed two studies with 6- to 7-year-old children. In study 1, we conducted a paper-and-pencil test in the context of wheelbarrows (N = 370; age M = 6.62). We investigated whether it is possible to empirically separate the features load, load distance, and force distance as well as to determine their level of difficulty. Our study showed that children's concepts of the three aspects load, load distance, and force distance are fragmented, with children finding it continuously more difficult to judge load, load distance, and force distance correctly. In study 2, we developed a 20-min intervention with a controlled 2 × 2 pre-post follow-up design for exploring the zone of proximal development of 304 6- to 7-year-old children in the domain of one-sided levers as force amplifiers, focusing on force distance and load distance. We implemented a structured learning environment that encouraged the children to manipulate wheelbarrows and supported them with pictures and/or verbal prompts. 6- to 7-year-old children had a higher learning gain when they were exposed to scaffolds that combined pictures and verbal prompts in the posttest as well as in the follow-up test four weeks later compared to the control group.     

劳动力价值理论视角下的农民工工资问题探析

农民工是我国城乡二元体制下的特有阶层,是农民身份与工人职业的特殊结合。当前农民工工资水平总体偏低且拖欠、克扣现象严重,这与我国劳动力市场上农民工数量供大于求、农民工可接受的工资水平低、组织化程度低相关,为农民工创造公平的就业条件,规范企业用工制度,强化农民工教育、改善维权途径,对维护农民工的合法权益,促进我国的现代化进程及和谐社会的建设有重要的现实意义。     

运用内力图规律快速绘制剪力图和弯矩图

根据荷载集度与剪力、弯矩之间的导数关系,找出了绘制内力图的规律,应用此规律画剪力图和弯矩图不必列内力方程,只需依据梁在不同荷载作用下剪力图及弯矩图的图形特征计算出控制截面的内力值,即能简便、快捷地画出内力图。     

论我国农村剩余劳动力的转移

近几年来,农村劳动力的隐性失业问题日益暴露,并逐渐成为制约中国经济发展的重要因素。实现农村剩余劳动力的有效转移是避免劳动力资源浪费和引发社会问题的重要方面。文章分析了当前我国农村剩余劳动力转移的制约因素,提出了解决问题的对策和建议。     

瑜伽课程纳入体育类第二课堂课程的现状调研

本文以瑜伽在大学的推广情况以及在推广中所需注意到的问题为主线,阐述了瑜伽课程在沈阳音乐学院南校区推广以来的探索实践过程。结合教学及课程设置中的实例,提出引导＂终身体育＂的概念进驻现代大学生活。促进大学生树立＂终身体育＂意识的建议。     

探析电源电动势和内电阻的测定方法和误差

物理实验在物理教学中占有很大的比例,理解实验原理,探究实验方法,合理分析误差是做好实验的前提,也是学好相应物理内容的关键.电学实验占物理实验的比重较大,其中,电源电动势和内电阻的测定既是电学实验的基础,又是不少学生难以掌握的内容.     

中小学委托管理工作的问题剖析与对策思考

改革开放以来,我国的基础教育得到了巨大的发展。然而,也出现了不均衡的趋势。近年来,一种新的管理制度——委托管理制度,在许多省市陆续开展起来。它对区域内学校的均衡发展起到了很好的作用,也产生了一些研究成果。为了保障委托管理的成效,需要建立委托管理的常规运行机制和道德支撑,解决动力与归因的缺失问题;大力凸显委托管理的特征;建立教师培养的新的机制;关注教师的心理问题,促进异质文化的融合;建立并完善实现教育均衡的配套政策。     

民族地区少数民族传统文化变迁及其地理驱动力分析——基于施甸县两个典型布朗族村落的调查与思考

在经济、文化全球化和以工业化与城镇化为主要特征的国家发展背景下,面对施甸县布朗族传统文化呈现弱化这一现象,以施甸县两个典型的布朗族村落为研究对象,在运用田野调查、问卷调查及访谈法等方法获取大量研究数据和资料的基础上,采用从定性到定量的综合集成方法揭示施甸布朗族传统文化的变迁特征,并进一步分析其传统文化变迁的地理驱动力,并就如何实现施甸布朗族聚居地区社会经济较快发展与其民族传统文化传承和保护之间的耦合提出相关的对策建议,以期为当地政府制定民族文化发展战略及其传承保护措施提供科学依据和决策参考。