浅谈判断与排除数控机床一般故障的方法

数控机床发生故障后,如何在诸多故障现象当中,捕捉到故障病因的症结?故障的诊断是否遵循一定的规律和方法?如何迅速诊断故障出处并排除故障使其恢复正常,是提高数控机床设备使用率的迫切需要。不断探索研讨故障发生的根源与防止故障发生的措施,才是最积极、最有效地提高数控机床使用效益和经济效益的举措。     

新中国初期的院系调整促进陕西高等教育快速发展

20世纪50年代,我国高等院校两次调整,促使陕西高等教育在学校数量、在校生规模、办学层次、学科类型等方面获得全面的快速发展。陕西高等教育在这一阶段的快速发展,为陕西发展成我国的高教大省奠定了坚实的基础。     

高校辅导员心理问题成因及其调适

辅导员是从事学生思想政治工作的中坚力量,对学生的成长起着不可替代的作用。但是由于工作繁杂、考评机制不健全、职业认同感低等原因使得高校辅导员心理问题突出。拟从当前高校辅导员工作的实际情况出发,分析其心理健康问题产生的原因并提出对策,以求借鉴意义。     

城市景观三维重建及渲染算法研究

针对现有的三维重建及渲染算法无法满足城市景观三维重建的需求问题,本文提出基于Kal-man滤波修正的三维重建算法和基于改进LOD的地形渲染算法。首先利用Kalman滤波修正算法对三维重建光束平差算法进行优化,加速原算法的响应时间,然后对LOD地形渲染算法进行优化,使用节点评价函数进行判断,节点是否需要进行分裂,从而实现不同的细节层次,利用添加边以及删减边结合的方法来消除地形中出现的裂缝。仿真试验结果表明,本文提出的基于Kalman滤波修正的三维重建算法和基于改进LOD的地形渲染算法在城市景观三维重建的应用中效果良好。     

探析高职学生在高中阶段的考试心理问题

为全面了解高职学生心理状况、提升其学习能力,试从其高中时期考试心理困惑及产生原因着手进行分析,以找出合适的解决方法。高中毕业生因考试压力带来心理困惑,既影响成绩发挥,也影响其身心健康。社会、家长要转变人才评价观念,注重培养学生心理素质;学生要形成正确的考试认知、树立自信心,努力学习;避免把过去的心理困惑带到新的学习阶段,影响身心健康发展。     

大学生入党动机的非理性偏差及矫正路径

大学生入党动机的非理性偏差主要表现在功利型、虚荣型、从众型等方面,大学生入党动机是否纯洁,直接关系到党员素质的高低,关系到党员队伍的先进性,因而,加强对大学生入党动机的表现和原因进行深刻分析,具有重要的理论意义和现实意义。     

提高宁夏工科高等教育培养质量的途径研究

根据宁夏高等教育发展的现状,并在分析中国高等教育发展趋势的基础上,结合宁夏高校工科教育发展的特点,研究提高宁夏工科乃至其它学科教育质量的制度和技术措施,提出了提升宁夏工科高等教育质量的具体策略。     

Are students really connected? Predicting college adjustment from social network usage

The rapid growth in popularity of social networking sites has spurred research exploring the impact of usage in a variety of areas. The current study furthered this line of research by examining the relationships between social network usage and adjustment to college in the academic, social, personal-emotional and university affiliation domains. Realising the number of students with social networking accounts, some universities have developed strategic plans for social media. Thus, this study also compared two universities, one with a social media strategic plan and one without, to determine if the planning process had an influence on students. Results indicated that social network usage was related to college adjustment. Specifically, those students who reported higher rates of social media use reported lower levels of adjustment to college in all domains. However, there were no differences between the two universities, indicating that having a social media strategic plan does not influence students in the area of college adjustment. These results are discussed in light of retention rates and changing practices within higher education.     

Social capital in the classroom: a study of in-class social capital and school adjustment

Social capital is generally considered beneficial for students’ school adjustment. This paper argues that social relationships among pupils generate social capital at both the individual and the class levels, and that each has its unique effect on pupils’ performance and well-being. The sample in this study consists of 1036 children in 60 first-grade classes in 46 Dutch elementary schools. Multilevel regression results show that a substantial proportion of the variance in school adjustment can be attributed to the class level and that both individual-level and classroom-level social capital have substantial effects on school adjustment. At the individual level, the size of one’s network is more important than its structure. At the collective level, social capital also has a ‘dark side’ because it can have negative effects on adjustment, lowering the academic performance in a class.     

结构调整、范式转换与“第三次工业革命”

我国正处于结构调整和发展方式转变的关键时期。文章用演化理论阐释了工业革命的性质,及其与科技革命和范式转换的联系与区别,探析了第三次工业革命的内涵。第三次工业革命在技术、生产和组织上,表现出与当前经济范式截然不同的特征。尽管支撑第三次工业革命的主要技术和产业尚未完全成熟,但是第三次工业革命已现端倪,不容忽视。第三次工业革命在给中国新兴产业和社会发展带来历史机遇的同时,也对传统自上而下的管理方式提出挑战。为了适应生产力发展的需要,传统管理方式需从直接干预向营造环境转变。