一种精度较高的控温装置     

皋艺  连建华 《长江工程职业技术学院学报》2002,19(2):23-24

介绍一种较新颖的电炉温控系统,电路简洁,工作可靠,控温精度高。  相似文献   

通信网络化的低压电器   总被引：1，自引：0，他引：1  

何亚平 《贵州教育学院学报》2003,14(4):57-58

阐述了低压电器向智能通信网络化发展的必然趋势．并指出了低压电器开发的方向。  相似文献   

职高计算机课堂教学中的低效现象及对策研究   总被引：1，自引：0，他引：1  

何丽明 《职教探索与研究》2007,(2)

职高计算机课堂教学效率低下现象一直是困扰广大职高计算机教师的问题。不同低效现象缘由各异。克服低效现象应注重培养学生的主动参与意识;慎重处理"任务驱动"教学模式的任务设置环节;善待课堂教学中的"非预设"生成。  相似文献   

略论汉初的黄老之学与儒学     

于东新 《廊坊师范学院学报》2007,23(6):14-17

西汉初期,叔孙通虽以儒学为高祖制礼仪,但也不过是点缀升平,并未被真正重视;陆贾著《新书》宣传文武之道,高祖忙于削平异姓侯王,儒学分封诸侯的思想,自然不适用。文帝喜"刑名,"景帝不任儒者。可见,儒学在西汉初期处于不得重视、暗中发展的情形。可是,黄老之学由于主张休养生息,清静无为,以及其"形名相实"的理论,最能适应西汉初期政治经济发展的需要,因而黄老之学成为汉初70余年间的基本统治思想。这种局面的打破是武帝即位以后的事,从此儒学便被奉为官方哲学,走上了神坛。  相似文献   

Fraction interventions for struggling elementary math learners: A review of the literature     

Rachel I. Roesslein  Robin S. Codding 《Psychology in the schools》2019,56(3):413-432

Understanding fractions has been a pervasively difficult skill for struggling math learners, yet it is essential for success in secondary level mathematics skills. The present systematic review examined the evidence base of fraction interventions for elementary level students identified as struggling math learners. Twelve studies met inclusion criteria and were reviewed for (a) instructional focus (b) instructional components, and (c) effectiveness of the intervention on fraction performance. The majority of studies had a primary instructional focus on conceptual knowledge of fraction learning. Results of the study also indicated that all interventions included multiple evidence‐based instructional components (e.g., concrete and visual representations, range and sequence of examples, etc.). These multicomponent interventions improved performance on a variety of proximal fraction outcome measures. Intervention effects were mixed for generalized outcome measures and minimal for distal outcome measures. Limitations, implications for practice, and future research directions are discussed.  相似文献   

低值易耗品价值摊销会计核算方法的合理选择     

张桂香 《湖南广播电视大学学报》2002,(3):16-17

合理选择低值易耗品价值摊销核算方法，不仅关系到会计信息的质量，同时还关系到资产的安全和完整。本认为：当前低值易耗品价值摊销核算方法选择中普遍存在认识上，操作上，制度上及管理上的四大误区，企业只有科学地运用会计准则，才能合理选择会计核算方法，尽可能地满足管理上的需要。  相似文献   

Development of computer play pedagogy intervention for children with low conceptual understanding in basic mathematics operation using the dyscalculia feature approach     

Nor Elleeiana Mohd Syah  Nur Azah Hamzaid  Belinda Pingguan Murphy  Einly Lim 《Interactive Learning Environments》2016,24(7):1477-1496

This study describes the development of a basic computer-based play pedagogy intervention using a dyscalculia-remedy-oriented approach such as repetition and number orientation manipulation, and the investigation of its effect on children displaying dyscalculia characteristics. This computer play was evaluated in a group of 50 seven-year-old Malaysian children, who were low achievers in mathematics subject and were divided into control and intervention group. The intervention group engaged with the newly developed computer play for an hour per day for five consecutive days, while the control group attended normal classroom learning for the same time period. Overall post-test scores indicated that children from the intervention group performed significantly better than the control group after the five-day intervention period by 57.9%. Number disorientation and arithmetic operation confusion, which are common amongst the children displaying dyscalculia characteristics, were also significantly reduced after the intervention. This implies that the children benefitted from the computer play.  相似文献   

不同工艺下超低碳贝氏体钢板回火过程中的力学性能     

苑少强  褚祥治  王仲军  陈贵清  李庆利 《唐山学院学报》2005,18(2):87-88,91

研究了弛豫析出控制相变(RPC)技术生产的超低碳贝氏体钢板回火过程中的性能变化,并与控轧后空冷(AC)以及传统的再加热淬火工艺(RQ)得到的钢板的性能进行了比较。结果表明:经过RPC工艺得到的钢板经500 ℃~700 ℃回火1 h后,随温度升高呈现软化硬化再软化的变化规律,经过AC工艺得到的钢板在回火后硬度和强度变化不明显,而经过RQ处理后的钢板随回火温度升高强度和硬度单调下降。利用RPC工艺得到的高强韧性钢板具有良好的热稳定性。  相似文献   

低合金高强度钢焊接线能量的选择     

王建勋  宋学平 《兰州石化职业技术学院学报》2006,6(1):11-13

借助焊接传热理论,导出了低合金高强度钢焊接线能量的理论计算公式,介绍了绘制最佳焊接线能量图的方法,对实际焊接生产中确定焊接线能量这一焊接技术参数具有重要的实际意义.  相似文献   

焦柳线张怀段低净空隧道对电气化施工的影响     

刘让雄 《石家庄铁路工程职业技术学院学报》2007,(Z1)

介绍张怀段低净空隧道在电气化施工中遇到的问题及处理对策,阐述问题产生的原因及改进建议。  相似文献