三维动画软件3DMax在虚拟有机化学实验中的应用

通过一虚拟有机实验室的建立，对3DMax在有机化学仪器的三维立体模型的建立，玻璃材质的制作，实验现象的虚拟及此过程中部分关键参数的设定等问题进行探讨并制作完成了有机化学实验软件．     

关于实体纹理造型中木纹函数的讨论

本文讨论实体纹理造型中木纹函数的建立和新的算法，描述木纹模型的构造过程，最后渲染产生实体木板的纹路效果。     

Developing Student Metacognition through Reflective Writing in an Upper Level Undergraduate Anatomy Course

Incorporating metacognitive strategies in the classroom helps students monitor and adjust their learning strategies throughout the semester, and helps students progress from novice to expert learners in a subject. Journaling (i.e., reflective writing) is one metacognitive task that allows students to contemplate and articulate their skill development as they learn a new subject. The research reported here examines the use of ‘blogs’ (i.e., online journals) in an upper level undergraduate human anatomy course. The blogs both facilitated development of students' metacognitive skills and provided researchers insight into student metacognitive process. Data were examined from 92 students from three successive semesters (spring 2010, 2012 and 2014). Each student reviewed 10 radiology online cases throughout the semester and then reflected on their understanding of anatomy and radiology in an online blog for each case. A total of 927 blogs were examined for this research. The researchers used a grounded theory approach to analyze the blog narratives and develop a codebook based on common themes. The 927 blogs yielded 11,082 statements that were coded with the codebook. As the semester progressed, the blog entries showed that students demonstrated greater self-confidence in their abilities to understand the subject matter, expressed greater enthusiasm for anatomy in general, and they improved their metacognitive skills. This research illustrates that reflective writing in an undergraduate anatomy course not only facilitates improvement in student metacognitive skills, but also provides the instructor with evidence how a student progresses from novice to more experienced learner in anatomy.     

Distinct neuron populations for simple and compound calls in the primary auditory cortex of awake marmosets

Marmosets are highly social non-human primates that live in families. They exhibit rich vocalization, but the neural basis underlying this complex vocal communication is largely unknown. Here we report the existence of specific neuron populations in marmoset A1 that respond selectively to distinct simple or compound calls made by conspecific marmosets. These neurons were spatially dispersed within A1 but distinct from those responsive to pure tones. Call-selective responses were markedly diminished when individual domains of the call were deleted or the domain sequence was altered, indicating the importance of the global rather than local spectral-temporal properties of the sound. Compound call-selective responses also disappeared when the sequence of the two simple-call components was reversed or their interval was extended beyond 1 s. Light anesthesia largely abolished call-selective responses. Our findings demonstrate extensive inhibitory and facilitatory interactions among call-evoked responses, and provide the basis for further study of circuit mechanisms underlying vocal communication in awake non-human primates.     

矩形平板典型非定常拍动的三维效应

用三维非定常面元法研究了不同展弦比矩形平板拍动的非定常气动响应.通过对矩形平板沉浮和俯仰2种基元运动的三维效应分析,得到如下结论:矩形平板非定常运动中,附加惯性效应影响了升力的瞬时值,其幅值随着展弦比的降低而减小,但时均值总为零;尾缘涡和侧缘涡作用是平均升力的来源,因矩形板在一个拍动周期内流向涡的方向发生改变,涡致升力的三维效应会随拍动非定常性增强而减弱.     

一种利用先验信息的可见光域相干衍射成像方法

提出一种可见光域的相干衍射成像方法.该方法在待测样品面引入一个已知的标准物体作为先验信息,并通过控制激光光束的照明范围得到2幅不同输入信息下的衍射图.依据这2幅衍射图和已知的先验信息,使用本文提出的相位恢复算法,在计算机数值模拟和光学实验中重建待测样品的复振幅信息.该方法仅需2幅衍射图即可进行无透镜成像,因此其成像过程较为简便,具有一定的实用价值.     

面向留学生的立体化信息服务体系的建立

本文从分析留学生利用高校图书馆获取信息过程中所存在的障碍和遇到的问题入手,总结了目前我国高校留学生信息服务中的不足,探讨并构建能够满足多层次留学生需求的立体化信息服务体系的具体内容,为高校图书馆面向留学生教育和服务工作提供参考。     

海洋生态灾害重大事件处置能力评价指标体系初探——基于“三维结构”理论分析

现有处置能力评价研究主要基于事件生命周期、基于事件影响因素、基于"三维结构"中的一个维度构建指标体系,存在构建思路单一、指标不全面、不规范等问题。试图解决这些问题,从要素维、流程维、功能维提出了海洋生态灾害处置能力评价指标体系的三维架构,为后续相关研究提供借鉴。     

陆水电厂水轮机叶片裂纹原因分析与处理

对陆水电厂水轮机叶片裂纹产生的原因进行了分析,并提出相应的处理方法,实施后取得了良好的效果.     

磁共振成像技术及其应用

磁共振成像技术依据原子核能级跃迁释放能量在物质不同结构环境中不同的衰减,通过外加梯度磁场检测所发射的电磁波,获得构成物体的原子核种类和位置,从而绘制出物体内部的结构图像．近年来,随着快速变化的梯度磁场的应用,核磁共振成像技术不仅在医学,而且在其他科研领域都得到了广泛的应用．