工学结合背景下高职专业人才培养与职业标准的对接——以岭南职业技术学院为例

高等职业技术教育根本特性在于职业性与技术性。专业人才培养要立足于职业性与技术性,需要提高教育教学质量,实现专业人才培养与行业、企业标准对接。在分析工学结合背景下高职专业人才培养的现状基础上,提出专业人才培养与职业标准对接的内涵,指出专业人才培养与职业标准对接的必要性。构建与职业标准对接的专业人才培养不只是与教学环节的单一对接,而是需要进行深度产教融合、课程体系的构建、课程内容整合与刷新等一系列贯穿于人才培养全过程的一个系统性工程。     

高温压电材料的概况及发展趋势

介绍了高温压电材料的研究现状,综述了钙钛矿、钨青铜型、铋层状、碱金属铌酸盐结构体系4种不同压电陶瓷的结构及研究情况,并指出了高居里点压电陶瓷的研究方向和发展趋势。     

Anisotropic fluoride nanocrystals modulated by facet-specific passivation and their disordered surfaces

Rutile-type fluorides have been proven to be active components in the context of emerging antiferr-omagnetic devices. However, controlled synthesis of low-dimensional, in particular two-dimensional (2D), fluorides in a predictable and deterministic manner remains unrealized because of a lack of efficient anisotropic control, which impedes their further development in reduced dimensions. We report here that altered passivation of {110} growing facets can direct the synthesis of rutile-type fluoride nanocrystals into well-defined zero-dimensional (0D) particulates, one-dimensional (1D) rods and 2D sheets in a colloidal approach. The obtained nanocrystals show positive exchange bias and enhanced magnetic transition temperature from the coexistence of long-range antiferromagnetic order and disordered surface spins, making them strong alternatives for flexible magnetic devices and sensors.     

热释电材料的研究现状分析

本文分析了热释电材料的研究现状 ,对比了各种材料的优缺点并着重阐述了PT系列材料的研究方向、方法、研究进展及存在问题。最后 ,对今后的研究提出了自己的看法     

不同质子酸掺杂聚苯胺的吸波性能研究

采用3厘米波导式测量线在8—14GHz频率范围内，用多点拟合的实验和计算方法对掺杂聚苯胺的微波吸收特性及参量进行了研究．发现：浓H2SO4掺杂本征态聚苯胺(PAn)所合成材料的电损耗很小、磁损耗较大(相对于盐酸聚苯胺而言)，且不利于对微波的吸收：FeCl3掺杂浓H2SO4-PAn材料可合成磁损耗较高、基本上有利于吸收微波的材料；更令人注意的是，利用HCl-PAn具有较大的电损耗，浓H2SO4-PAn—FeCl3材料具有较大的磁损耗这一特点，我们将它们按一定的比例混合，可以合成出平均衰减为13．37dB，最大衰减为26．7dB，密度为0．7g／cm^3、频宽为10．34—14GHz的很有利于吸收微波的材料．     

传播学视阈下的文化媒介属性(下)

媒介是文化的载体,承载着人类数千年以来的历史文化和生生不息的知识、智慧以及人们的思想、观念走进了21世纪。与此同时,各种样式、种类、流派和风格的人类文化,在不断涌现的新的文化媒介、新的传播技术和新的传播方式的支持下,发扬光大、日益繁荣,成为推动社会、经济发展的重要产业。从文化媒介的共享性、传播性、创意性和流通性等方面,论述文化媒介的产业特质。     

基于社会学视角的传统农村治理模式研究

纵观中国传统农村社会,法治长期得不到发展,传统农村主要依靠社区内自身的礼治秩序实现农村治理的目标。传统农村具有血缘性、狭隘性、封闭性、独立性等特征,这些独特秉性酝酿了独特的农村礼治秩序。农村礼治秩序的实施运行则从根本上取决于相关因素的保障;礼治的制度资源、制裁效能成为产生礼治秩序的重要内因;乡村的社会环境、政权管理的高成本则为礼治秩序的产生提供了可能的外因。     

铁在六角氮化硼层中的磁行为(英文)

采用第一原理密度泛函理论计算研究了铁原子掺杂入六角氮化硼层中的磁行为。发现铁诱发了六角氮化硼层的自旋分裂,铁d电子的占据也明显发生变化。通过密里肯标准布居分析判断,体系表现出来的磁矩主要由铁的3d电子捐献。论文丰富了分子磁铁的研究并指出了一条增强分子体系磁性的方法。     

Strategy selection for cognitive skill acquisition depends on task demands and working memory capacity

The involvement of working memory capacity (WMC) in ruled-based cognitive skill acquisition is well-established, but the duration of its involvement and its role in learning strategy selection are less certain. Participants (N = 610) learned four logic rules, their corresponding symbols, or logic gates, and the appropriate input–output combinations in three-gate circuit patterns. Participants practiced 120 repetitions of each rule (480 total gates) over the course of 10 training blocks. Memory load varied between subjects. The confluence of task demands and individual differences in WMC (N = 518) dramatically affected speed–accuracy tradeoffs and strategic use of a computerized help function. Cluster analysis revealed five distinct groups of participants based on the combination of response accuracy, latency, and help use. Some groups with moderate to high mean WMC acquired the task with predictable performance patterns. Other groups, prevalently under a memory load and with low mean WMC, failed to learn or overused help.