中国回旋管的发展计划(英文)

本文介绍在回旋管领域开展的研究工作及电子回旋谐振加热在中国的应用。同时,还报道在回旋管领域提出的新概念和取得的成果。     

谈声乐教学中的三大要素--歌唱的呼吸、共鸣位置、打开喉咙

歌唱的呼吸、共鸣、打开喉咙是声乐教学中的重点、难点问题.文章结合作者的声乐教学经验阐述了这三大要素之间的相互关系以及如何进行歌唱的深呼吸,打开共鸣腔体,获得正确的歌唱位置,从而获得正确的歌唱方法.     

基于功能梯度磁电复合材料的新型自偏置磁传感器

文章采用超磁致伸缩材料Terfenol-D(Tb0.37Dy0.63Fe2)、金属玻璃Metglas 2605SA1和压电材料PZT(Pb(Zr, Ti)O3),设计了一种基于功能梯度磁电复合材料的新型自偏置磁传感器.利用Metglas和Terfenol-D之间的磁导率和矫顽力差异产生较强的磁化梯度,打破原有的平衡状态,导致内建磁场产生,进一步提高了零偏置磁场下磁致伸缩材料的压磁系数和磁电响应.实验结果表明：该传感器获得了较高的低频和高频零偏置磁电电压系数,分别达到9.14 mV/Oe和572 mV/Oe,并且谐振磁电电压输出和激励交变磁场之间呈线性变化关系.该自偏置磁传感器避免了传统磁电传感器对偏置磁场的依赖,具有制作简单、成本低、体积小,无需偏置磁场以及灵敏度高等优点.     

纯电动汽车磁助力启动制动结构设计

根据纯电动汽车整丰在运行条件下制动力矩的需求,设计了一种磁助力启动制动系统。利用电磁同性相斥、异性相吸的原理,根据车轮速度时时变化控制和改变磁极磁性,在汽车起步和制动过程起到磁助力作用。计算了电磁启动制动力矩,设计了电磁制动控制电路。基于ECE法规设计了制动力分配算法,计算表明：在高响应测速传感器的反馈控刺中,磁动力启动制动结构能够迅速有效地起到助力作用,为改善纯电动汽车的行车效能提供了新的思路。     

退火对软磁合金的最大磁导率影响的机理研究

本文以Fe－Ni软磁合金为研究对象，从晶体缺陷及内应力两方面分析了退火参数对最大磁导率影响的机理，指出位错、晶界以及晶格畸变应力是影响最大磁导率的主要因素。     

一种复杂场景雷达图像实时仿真方法

雷达图像计算机仿真技术是解决多参数雷达图像数据源匮乏的有效途径,其核心是对地表场景电磁物理模型的建模.文中提出了一种利用待仿真场景地物的先验信息和数字高程信息,对待仿真场景进行雷达成像的电磁物理特性建模,进而实现雷达图像仿真的方法.仿真结果表明,该方法可以实时地对地表复杂大场景进行多模式、多参数变化的雷达成像仿真.     

谈歌唱中共呜的构成与运用

本文论述了歌唱共鸣器官的构成及其在声乐演唱中的重要作用，探讨了共鸣与音源、音色的关系及共鸣腔体的训练。从理论角度深入了解共鸣的构成和运用，将会对我们的演唱和教学起到重要作用。     

Under the skin: Exploring 2-month-olds' thermal reactions in different social interactions with mother and stranger

Physiological adaptations to external stressors can reveal socio-cognitive health in infancy. With the use of thermal imaging and behavioural analyses, the current study examined the arousal markers accompanying infants’ interactions with a familiar and an unfamiliar person. To address the current research question, the mother and a complete stranger interacted with 2 to 3 month-old infants (N= 10, 2 boys)in three different conditions: Neutral, Play, and Compliment. Behavioral analyses showed that overall gaze was longer to the Stranger compared to the Mother independent of condition. Physiological findings showed that skin temperature was significantly higher with the stranger independent of condition. The regions of the face that passed the significance threshold included the maxillary area, the nose, and the forehead. Both behavioral and physiological findings emphasize the ability of the infant to distinguish between a familiar and an unfamiliar person. Most importantly, however thermal imaging has proven to be a promising tool in physiologically differentiating between variable social conditions in very young infants opening up a new experimental portal for identifying healthy physiological development.     

Cognition in Situations

The symbolic interactionist tradition can contribute to advancing sociological studies of cognition by setting dual process models on more solid ground. I draw on Blumer's epistemological statements and the interactionist tradition more broadly to consider how dual process models of cognition could be applied to naturally occurring situations. I suggest that attending to the ways the past and the future are handled and modified within social interaction provides a usable inroad for the sociology of cognition to engage with situational analysis. I identify “resonance” and “iterative reprocessing” as concepts that are suitable to this end.     

均匀磁场中的平面载流线圈

本文以最普遍的方式讨论了任意形状的平面载流圈在均匀磁场中的力学性质,从而在普遍的意义上定义了平面载流圈的磁矩．