热处理工艺对5083铝合金船用板晶间腐蚀的影响

采用金相显微镜、SEM、EDS,研究热处理工艺对5083铝合金晶间腐蚀的影响.研究结果为：试样经过180℃退火后,内部形成了等轴晶粒,晶界上析出了β相（Mg2Al3）;稳定化试样在350℃下保温4 h,再经过180℃退火保温150 h,其晶间腐蚀深度最小,在50μm以下,晶间腐蚀等级为3级.     

We have been living with this pain: enquiry-based language learning in Iranian higher education

This article explores an understanding of learning as authentic enquiry and language as a social practice of meaning construction as the theoretical perspectives underlying an educational initiation beyond mainstream tertiary language education. With a general ethnographic approach and relying on multiple data sources, we investigate critical practices of teaching medical English in an Iranian university and illustrate a contextualized instance of enquiry-based language learning that embodies enquiry and discovery in two senses: students’ research and learning about the content for oneself, and moving away from spoon-feeding views of academic language education to experience language in real social contexts. On this basis, we argue for stepping beyond predetermined content-based approaches to university language teaching and call for living the language that is being learned, which involves enquiring, experiencing, discovering, challenging, and owning it.     

The reality of virtual worlds: pros and cons of their application to foreign language teaching

This article presents our experience of testing the OpenSim platform as a tool in teaching French to 108 tourism students at Universidad Rey Juan Carlos (Madrid, Spain). The article begins with some theoretical reflections on the behaviour of the student when using a virtual platform by means of an avatar, and with our observations of how this doubling of identity is actually the greatest asset of virtual worlds when we intend to apply them to teaching (1. Introduction). Then we move on to present our goals and method of work (2. Aims and methodology) and to analyse the development of the virtual space or sim, setting out the teaching strategies that were employed in each of the islands we created, and which correspond to reading comprehension, listening comprehension and written expression (3. Metaverse design). In order to assess the language learning results, we also devised tests throughout the experiment, which were repeated one month later. The assessment shows that the process of language acquisition is positive (4. Results analysis). Finally, we demonstrate that the rise of virtual worlds has been backed up by psycholinguistic factors, but at the same time their applicability and sustainability depend on technical aspects and very especially on theoretical and pedagogical tenets which are still to be drawn up (5. Conclusions).     

艺术类高职高专英语ESP教学模式探讨

随着中外文化交流的日益频繁,艺术类高职高专英语教学肩负着培养具有英语文化交流能力特别是能运用英语进行艺术专业信息收集、传递、分析的人才。目前的英语教学模式重在帮助学生打好语言基础。ESP教学模式有效运用交际教学理念和实践,同时对现有的师资、教材教法也提出了更多的思考空间。文章通过对艺术类高职高专英语教学的关注,试图对ESP教学模式的实施进行探讨。     

任务型语言教学下的ESP课程自主学习

本文从任务型语言教学理论入手,分析TBLT对于促进学习者自主学习的优势,提出在中国的ESP教学中运用任务来实现对学习者自主学习能力的培养与提高,并对可能存在的问题进行了探讨。     

“土地利用专项规划”课程教学创新探索

＂土地利用专项规划＂课程的教学质量和教学效果直接关系到学生能否适应社会的需要,科学设置课程内容与创新教学研究势在必行。文章基于对欧美教师教育转型和科学研究创新要求的思考,对＂土地利用专项规划＂课程教学内容设置与教学创新进行了初步的探索。     

高校图书馆参与城市社区文化建设的措施

以大文化的视野观察,高校图书馆和社区文化之间具有相同的社会公益属性。目前,城市社区文化存在不少问题和不足,需要其他公共文化资源的介入和支撑。高校图书馆有必要融入城市社区文化建设．并具备较好的图书资源和人力资源等优势,建立高校图书馆参与城市社区文化建设的机制和一套可实施的具体规章制度,应该能作出较大贡献。     

热处理对黑电气石结构的影响

该文以广西所产黑色电气石为研究对象,以400℃、500℃、600℃、700℃、800℃、900℃为热处理温度进行焙烧处理,采用X射线衍射法、红外吸收光谱测试了热处理前后电气石的结构变化．实验结果表明：当处理温度在400℃、500℃、600℃时,电气石的物相仍为黑电气石,说明该电气石在600℃下能够稳定存在;当处理温度升高到700℃,电气石的物相转变为布格电气石,同时晶胞体积缩小,可能是由于高温条件下电气石的晶胞产生了收缩：当热处理温度升高到900℃时,电气石结构被破坏,主要物相转变为Fe2O3．     

高等教育大众化背景下高校特色专业建设的原则探析

特色专业建设是高校优化专业结构,提高人才培养质量,提高高校声誉的蕈要措施。为此,在高等教育大众化背景下高校虚努力在特色专业建设方面下功夫,以特色专业建设为支点来推动高校的发展,努力办成人民满意的高等教育。高校特色专业建设的原则包括：因校制宜的原则、因地制宜的原则、循序渐进的原则、重点培育的原则。     

大学制度的分层研究

对大学制度的认识仅停留在观念上是远远不够的,还必须从技术层面深入解读,这就要求对大学制度进行分层研究。搞清楚究竟应该具备哪些制度才能使一所大学成为真正意义上的大学;究竟一所大学应该建立哪些制度才能保证大学功能的正常发挥;究竟至少需要哪些制度才能保证大学日常工作有条不紊地开展。所有这些制度安排使得大学和谐而高效地通过积累知识、传播知识、运用知识、发展知识、创新知识的各种活动来达到培养人才、研究科学、服务和引导社会的目标。