基于“成效为本”的课程开发与实施策略

为适应新形势下高职教学发展需要,四川长江职业学院利用其香港资源背景,开启了学习和借鉴成效为本教育理念,将香港职业资历架构与自身课程改革建设融合的探索之路。本文全面分析基于成效为本的课程具有教学目标明确化、教学内容实用化、教学方式多样化、课程评价可量化等四个特点,并在课程实施中提出需要建设优秀的教学团队、建设高标准的实训基地、建立教学的建设性校准机制、持续改进与管理课程等措施。

“成效-质量-贡献”三位一体的经济学类研究生能力评价指标体系构建

文章首先说明了经济学类研究生能力评价的必要性及依据,然后从评价指标体系的构建原则、评价指标体系的维度设置及指标选取两个方面论述了“成效-质量-贡献”三位一体的经济学类研究生能力评价指标体系构建,最后阐述了“成效-质量-贡献”三位一体的经济学类研究生能力评价指标体系应用。

Evolution of microstructure in semi-solid slurries of rheocast aluminum alloy

Semi-solid metal processing is being developed in die casting applications to give several cost benefits. To efficiently apply this emerging technology, it is important to understand the evolution of microstructure in semi-solid slurries for the control of the theological behavior in semi-solid state. An experimental apparatus was developed which can capture the grain structure at different times at early stages to understand how the semi-solid structure evolves. In this technique, semi-solid slurry was produced by injecting fine gas bubbles into the melt through a graphite diffuser during solidification. Then, a copper quenching mold was used to draw some semi-solid slurry into a thin channel. The semi-solid slurry was then rapidly frozen in the channel giving the microstructure of the slurry at the desired time. Samples of semi-solid 356 aluminum alloy were taken at different gas injection times of 1, 5, 10, 15, 20, 30, 35, 40, and 45 s. Analysis of the microstructure suggests that the fragmentation by remelting mechanism should be responsible for the formation of globular structure in this rheocasting process.

Travel modal choice analysis for traffic corridors based on decision-theoretic approaches

The rapid development of multimodal transportation system prompts travellers to choose multiple transportation modes, such as private vehicles or taxi, transit(subways or buses), or park-and-ride combinations for urban trips. Traffic corridor is a major scenario that supports travellers to commute from suburban residential areas to central working areas. Studying their modal choice behaviour is receiving more and more interests. On one hand, it will guide the travellers to rationally choose their most economic and beneficial mode for urban trips. On the other hand, it will help traffic operators to make more appropriate policies to enhance the share of public transit in order to alleviate the traffic congestion and produce more economic and social benefits. To analyze the travel modal choice, a generalized cost model for three typical modes is first established to evaluate each different travel alternative. Then, random utility theory(RUT) and decision field theory(DFT) are introduced to describe the decision-making process how travellers make their mode choices. Further, some important factors that may influence the modal choice behaviour are discussed as well. To test the feasibility of the proposed model, a field test in Beijing was conducted to collect the real-time data and estimate the model parameters. The improvements in the test results and analysis show new advances in the development of travel mode choice on multimodal transportation networks.

关于美国制造业回流的数据观察与分析思考

美国制造业在上世纪五六十年代达到鼎盛期后不断外迁调整而逐步“空心化”,2008年国际金融危机以后美国政府大力推动制造业回流和振兴。研究发现美国制造业回流已取得明显“成效”,近两年回流集中在“2+2+1”领域(半导体和电池两大产业链、清洁能源和医疗健康两大行业以及关键矿产领域),且中高端与中低端产业同步回流,并形成了“本土回流+近岸回流+友岸回流”体系,特别亚洲是最重要的回流来源地。这将推动全球供应链和产业布局产生深刻调整。为此,从发挥上海“桥头堡”地位抢先布局、关注制造业企业“综合成本”感受度、塑造“上海制造”战略新优势、推进“上海制造”“高精尖缺”人才引育等方面提出了上海制造业发展的思考与建议。