民事契约论与中国婚姻家庭法

我国<婚姻法>受前苏联婚姻家庭学的影响,对"资本主义婚姻家庭关系契约化、商品化"持批判态度.文章通过对婚姻的社会背景、内涵、实践意义的分析,认为婚姻是当事人间的协议,当事人既可以协议建立婚姻,也可以协议解除婚姻,即婚姻的本质就是契约.     

浅析舒曼艺术歌曲的创作特点

简单分析了德国浪漫主义作曲家舒曼艺术歌曲创作方面的主要特征及其贡献。     

Conversion of CO<Subscript>2</Subscript> to useful substances with composite iron,nickel, and copper catalysts

Composite materials of Fe/Al₂O₃, which consist of small particles of iron supported by thermally stable alumina even at 500–700 °C, have been widely used in the water-gas shift reaction for natural gas reforming. Therefore, Fe/Al₂O₃ is one of the promising candidates for re-transformation of exhausted CO₂ into fuels such as alcohols and hydrocarbons. The development of a CO₂ reforming system using the composite materials of Fe/Al₂O₃ through CO₂ reduction to CO, dissociation of water into hydrogen, and methanol synthesis has been investigated. It was found that dry and steam (i.e. wet) reforming of CO₂ produced almost the same amount of CO. At a temperature above 500 °C, maximal and saturated yields of CO and H₂ from CO₂ and water were obtained. However, this CO₂ reforming system requires higher-pressure conditions from several tens to hundreds standard atmospheric pressure in order to achieve high yield and selectivity for methanol production. In this study we developed the modified CO₂ reforming system by the utilization of Ni and/or Cu instead of Fe in order to obtain other types of useful products such as CO, CH₄, and carbon, more efficiently and selectively under atmospheric pressure. When Ni or Cu was used, conversion of CO₂ was reduced to 76%, while 9% of methane was detected in the case of Ni. On the other hand, though the CO₂ conversion reduced half of the Fe, the selectivity of CO from CO₂ increased to 95% in the case of Cu.     

Numerical investigation of cavitating flow behind the cone of a poppet valve in water hydraulic system

Computational Fluid Dynamics (CFD) simulations of cavitating flow through water hydraulic poppet valves were performed using advanced RNGk-epsilon turbulence model. The flow was turbulent, incompressible and unsteady, for Reynolds numbers greater than 43000. The working fluid was water, and the structure of the valve was simplified as a two dimensional axisymmetric geometrical model. Flow field visualization was numerically achieved. The effects of inlet velocity, outlet pressure, opening size as well as poppet angle on cavitation intensity in the poppet valve were numerically investigated. Experimental flow visualization was conducted to capture cavitation images near the orifice in the poppet valve with 30° poppet angle using high speed video camera. The binary cavitating flow field distribution obtained from digital processing of the original cavitation image showed a good agreement with the numerical result. Project supported by the National Natural Science Foundation of China (No. 59835160) and Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry of China (No. 50175097)     

论新疆高校"民汉合班"的文化追求

"民汉合班"是新疆高校近年来为缩小民汉教育质量差距而采取的一种教育模式,是"民汉一体化"教学思想的表达."民汉合班"的班级主体构成打破了以往单一民族成份的格局,由此也带来了班级文化呈现主流民族文化及少数民族文化共在的多民族文化并存态势.文章从文化共生班级文化内涵解析入手,论证了"民汉合班"追求文化共生班级文化的价值,并提出了构建文化共生班级文化的路径.     

对高校教师体质观念及现状的调查与分析

本文对高校教师的体制观念、行为模式、体制现状进行了较为深入的研究和探讨，并得出了一些规律性的、共性的结果，同时提出了提高高校教师体质观念，体质水平的相关建议。     

多元智能理论的评价观及其对我国幼儿发展评价的启示

多元智能理论是一种全新的有关人类智能结构的理论。其评价观及其对我国幼儿发展评价的启示是：评价要以帮助幼儿发展为主要目的；评价内容和评价标准应多元化；评价是情境化的，是幼儿学习情境的一部分。     

基于心理契约视角分析大学生就业中的违约现象

大学生就业一直是社会关注的焦点和热点，近年来，违约现象的增多给大学生就业工作带来一定困难，致使人力资源配置成本增加。本文从心理契约的视角分析大学生就业中的违约现象，找出双方心理契约违背的根源，并提出解决方案，旨在减少和避免大学毕业生就业中因心理契约违背出现的违约现象。