消失模白区锅炉控制系统设计及在GCr15SiMn轴承钢生产的应用

根据工厂的实际水平情况实现生产设备与生产流程的优化匹配,在符合实际生产要求的情况下最大限度地降低生产成本。针对蒸汽锅炉过热汽温和压力对象较差的动态特性,基于PLC和触摸屏技术的GCr15SiMn轴承钢铸造温度与工艺控制系统,显著细化了GCr15SiMn轴承钢铸造后的显微组织,改善了GCr15SiMn轴承钢铸造后的力学性能和耐磨损性能,具有较好的工业应用价值。     

有机化学课堂教学中化学思维和化学方法的培养

本文结合作者的课堂教学实践,对如何培养学生的化学思维与化学方法,从三个方面进行了论述。     

Axial compression behavior and analytical method of L-shaped column composed of concrete-filled square steel tubes

Based on the characteristics of an L-shaped column composed of concrete-filled square steel tubes, the axial compression experiment and nonlinear finite element analysis were carried out to study the mechanical property of the L-shaped column. The load-displacement curve for the L-shaped column, the deflection and load-strain curves for the mono columns were obtained by the axial compression experiment. The results show that the L-shaped column exhibits a flexural-torsional buckling failure mode. The numerical simulation by the finite element analysis shows that the bearing capacity and failure mode are in accordance with those of the axial compression experiment and the feasi- bility of the finite element analysis is proved. For the calculation of the bearing capacity of the L-shaped column com- posed of concrete-filled square steel tubes, an analytical method is proposed based on the theory of the elastic stability and spatial truss model. The results of the analytical method are in good agreement with those of the axial compression experiment and the finite element analysis.     

案例教学在化工仪表及自动化课程中的探索与实践

本文就实施案例教学在化工仪表及自动化课程中的意义、案例的选取原则以及案例教学的组织形式等进行了探索。     

The limit analysis in soil and rock： a mature discipline of geomechanics

The solution of a slope stability problem can be approached by its least upper-bound and maximum lower-bound with high accuracy. The limit equilibrium methods that employ vertical slices imply a lower bound of the factor of safety. It has been successfully extended to the area of active earth pressure analysis that accounts for different input of locations of earth pressure applications. Those methods that employ slices with inclined interfaces give an upper-bound approach to the stability analysis. It enjoys a sound mechanical background and is able to provide accurate solutions of soil plasticity. It has been successfully extended to the area of bearing capacity analysis in which various empirical coefficients are no longer necessary. The 3D upper- and lower-bound methods under this framework have been made possible and show great potential for solving various engineering problems.     

行为导向法在中职英语教学中的有效应用与思考

随着新课程改革的不断实施与深化,对教育质量不断提出更高要求,而教学方法的选择也成了影响教育质量的关键因素。在以往教学活动中,过多地强调了教师的作用而忽略了学生的主体地位,行为导向教学法的运用,能够使学生的主体地位得到充分体现,教师的主导作用得到充分发挥,能够有效的提高课堂教学效率。本文笔者以中职英语教学作为主要的研究对象,针对行为导向法的运用进行简单的探讨。     

我省农村中学数学教师队伍的基本状况及专业培训情况调研

教师专业化发展主要靠教师自身努力（内因）,培训（外因）只是一种辅助手段。我们应当理性看待师资培训问题。期望仅依靠师资培训一劳永逸地从根本上提升教师专业素质是不现实的。对中学数学教师的问卷调查与个别访谈均表明,目前中学数学师资培训从培训理念、培训方法、培训内容、培训过程等方面存在诸多问题,均急需改进。我们认为中学数学教师培训不但要关注当前教学实践中存在的问题,更要在促使教师主动积极地进行教学改革方面下功夫。     

旅游区环境美学评价方法及应用——以庐山风景区为例

旅游区环境质量评价不应仅限于环境污染和防治,还应根据各类旅游区的特点,从环境美学质量要素方面进行综合评价。环境美学质量评价方法虽然很多,但受各种因素制约大多不成熟,目前最常用的方法是征询评分统计加权法。本文以庐山风景区为例,介绍旅游区环境美学评价方法——征询评分统计加权法的应用。     

"一一制"普通高校学生体育课成绩评价体系的调查与分析

选定学生对“一一制”的态度等组成调查问卷发放给2001级学生,收回有效问卷906份,归纳反馈信息得出:“一一制”普通高校学生体育课成绩评价体系公正、公开、科学、先进、易操作,学生成绩分布合理,收效甚佳,可以替代“四合一式”普通高校学生体育课成绩评价体系.     

试析制约我国高校国防教育教学方法改革与创新的因素

高校国防教育教学方法影响着国防教育教学目标实现的程度和效率。高校国防教育教学方法的特殊性表现为:具有鲜明的军事化特点;突出爱国主义教育;重点培养综合素质。影响和制约国防高校国防教育教学方法改革的因素主要有:社会经济;科技大环境因素;高校自身文化传统的因素;教学设计和教学条件的因素;国防教育教师素质与个性因素。