开采上保护层效果检验技术研究

煤与瓦斯突出严重影响了矿井安全生产,开采保护层是最有效、最经济的防治措施;通过对海孜矿上保护层开采效果研究,结果表明：开采前后瓦斯压力及含量降低明显,卸压区内瓦斯抽采率可达33.2%;卸压区内煤层透气性系数比未卸压区的增大三倍;相似模拟实验表明9煤的膨胀率为8.1‰,综合分析确定开采上保护层后对9煤起到了明显的卸压保护作用,研究结果为相似条件下保护层开采提供了参考。     

开展综合设计性实验 培养大学生创新能力

结合高等学校自身情况,从大学生进行设计性实验角度阐述如何培养新时代下大学生的创新能力,并通过探讨大学生自主设计性实验的开展,对大学实验教学提出一定建议。     

中职模拟电子技术实验课程改革

模拟电子技术课程是电力类专业的一门重要的技术基础课,而实验是电子技术课程教学中不可缺少的重要环节。通过实验教学改革使学生掌握基本电子电路的设计方法,能激发学生的学习兴趣,锻炼其动手能力,提高分析问题和解决问题的能力。     

浅析发展性学校评价的动力缺失及对策建议

发展性学校评价理念在落实的过程中存在动力缺失的问题,究其原因,主要有：评价主体对发展性学校评价的认识存在偏差、评价反馈环节薄弱、组织缺失和合作文化缺乏以及内部评价与外部评价失衡等,为了有效激发评价动力,需要从以下几点着手：正确认识发展性学校评价、完善评价机制、注重校内合作文化建设、加强内外部评价之间真诚对话等。     

听力理解中的障碍及策略分析

在英语学习中,听力是应主要培养的能力之一。本文从听力活动中存在的主要障碍入手,分析了英语听力培养所面临的困难,结合日常教学实践,提出了解决听力障碍的策略及方法。     

2010年广东省大学生田径锦标赛综述

通过对2010年广东省大学生田径锦标赛整体赛事的综合分析,对广东省大学生田径锦标赛的发展现状及其存在问题进行探讨、研究,并提出建议。     

《供应链管理》桌面实训实例分析——商丘职业技术学院高职实训新方式

商丘职业技术学院《供应链管理》课程实训教学中实施的桌面实训项目,其设计思路来源于沙盘实训并借鉴于桌面游戏。在教师的实训教学实践中,逐步形成了完整的实训设计,包括实训模块、实训课时、实训规则等,并取得了良好的实践效果。桌面实训作为高职实践教学的新形式具有较强的推广性。     

论需求分析理论框架与交际测试法真实性的关系

需求分析是开展语言教学的首要阶段,其相关理论常用于外语课程改革和教学大纲设计的研究。语言测试作为对教学内容的检核和评估的手段,其测试内容的设计与需求分析也有明显的关联,但从需求分析的角度来探讨语言测试的相关性研究论述较少。文章对需求分析模型和语言测试真实性原则进行论述,并以IELTS听力试题为例阐述需求分析与交际语言测试真实性的相关性,探讨语言交际测试原则中真实性的实现途径,发现语言测试只有始终与持续性的语言需求分析相结合,客观反映受试者的语言水平,才能保障测试的真实性。     

Modeling of polishing process for electric stainless-steel kettle

The market of stainless electric steel kettles is growing significantly, but the main mechanism for polishing kettles via traditional handwork operations limits the growth of electric kettle manufacturing. Based on the successful multi-tool automatic polishing system for electric stainless steel kettles, regression analysis and orthogonal tests were employed to construct a polishing process model, with a purpose to improve the automatic polishing technology for electric stainless steel kettles. The model reveals the relationship between the surface roughness and processing parameters including gringding depth, abrasive tangent speed, workpiece rotating speed and axial feeding speed. Simulation and experimental results are in agreement,which shows that this modeling method is feasible in practice, and it can also be used as a guidance for planning automatic polishing process of electric stainless-steel kettles.     

An examination of the interactions between museum educators and students on a school visit to science museum

Today, science is a major part of western culture. Discussions about the need for members of the public to access and understand scientific information are therefore well established, citing the importance of such information to responsible citizenship, democracy, socially accountable scientific research and public funding (National Research Council [2009] Learning science in informal environments: People, places, and pursuits. National Academies Press). In recent years there has been an increased interest in investigating not just what visitors to informal environments have learnt after a visit, but also how visitors interact and engage with exhibits during the visit (Davidsson & Jakobsson [2012] Understanding interactions at science centers and museums: Approaching sociocultural perspectives. Rotterdam: Sense Publishers). Within the field of school visits to science museums, however, interactions between students and museum educators (MEs) remain relatively unexplored. In our study of such school visits, we are mainly interested in the interactions that take place between three agents—the students, the museum educator and the physical setting of the exhibit. Using moment-to-moment fine grain analysis of multiple interactions allowed us to identify recurring patterns between students and the museum educators around exhibits, and to examine the MEs’ mediational role during the interactions, and the practices they employ to engage students with exhibits. Our study revealed that most interactions between MEs and students consist of technical explanations of how to operate the exhibits. The interactions that do move past this stage often include two main practices, which the MEs use to promote students’ engagement with the exhibits: physical instruction and engaging the students emotionally. Understanding what is actually happening in the learning process that occurs during students’ interactions with exhibits can help museum educators and exhibit designers improve the experiences of students on school visits.