Subjects: Astronomy >> Astrophysical processes submitted time 2019-04-29 Cooperative journals: 《天文研究与技术》
Abstract：射电望远镜是天文观测与深空探测的重要设备，当前正朝着大口径、高频段方向发展。大型射电望远镜的面形精度是影响接收性能的关键指标。为了厘清各种大型射电望远镜面形精度测量方法的特点，将大型射电望远镜面形精度测量方法分为了四类：经典测量法、激光测量法、摄影测量法和微波全息法；详细阐述了各种面形精度测量方法的原理及应用，并对比分析了各自的优劣势；最后对大型射电望远镜面形精度测量方法的发展趋势进行了论述和展望，为不断探索和创新望远镜面形精度测量方法提供了启发。
Subjects: Astronomy >> Astrophysical processes submitted time 2019-04-29 Cooperative journals: 《天文研究与技术》
Abstract： C超丰贫金属星（CEMP）在老年恒星中的普遍存在使得它成为研究宇宙早期形成和演化的重要对象，具有不同中子俘获元素丰度特征的CEMP有着不同的起源。不同于已经历挖掘过程的巨星，主序拐点星能很好地在其表层大气保留形成初期的物质，从而可以追溯到更早期的恒星形成化学环境。我们通过LAMOST巡天数据选源并利用Subaru/HDS进行后续高分辨率光谱观测了12颗CEMP主序拐点星，其中有10颗星是首次被分析。与已有的CEMP主序拐点星观测样本相比，我们的样本中包含了更高比例的中子俘获元素不超丰CEMP恒星（CEMP-no星），发生在中等程度C超丰区域，为其起源研究提供了重要数据。对其中6颗CEMP-no星测定了Li丰度，尤其是其中3颗极贫金属星样为探讨[Fe/H]<-3.0的CEMP拐点星Li丰度特征提供了重要的新观测数据。新增样本验证了CEMP-no星在[Fe/H]～-3.0附近为Li-正常星，与前人结论一致；而新增的两颗CEMP-s星表现出了中等Li丰度，介于之前的较大Li丰度范围，我们的研究为CEMP-s和CEMP-no的分类提供了辅助约束条件。
Subjects: Psychology >> Medical Psychology submitted time 2019-04-29
Abstract： " The Promoting the Emergence of Advanced Knowledge (PEAK) Relational Training System is the first verbal behavior assessment instrument and treatment protocol that integrates Skinner’s “Verbal Behavior” and Post-Skinnerism analysis of human language and cognition, “Relational Frame Theory”. It aims to address the language and cognitive deficits in children with autism. By the end of 2018, the PEAK system has published four modules: PEAK-Direct Training module (PEAK-DT), PEAK-Generalization module (PEAK-G), PEAK Equivalence module (PEAK-E) and PEAK-Transformation module (PEAK-T). Each of the modules contains a direct pre-assessment, a full 184-itemized skill assessment, and a 184 item curriculum. Based on the previous literature, PEAK-DT has broken the ceiling effect of the VB-MAPP milestone evaluation in patients with ASD, and the entirety PEAK system is prospected to provide a more advanced and comprehensive verbal behavior assessment and training system than VB-MAPP. Since the establishment of the PEAK system in 2014, many published empirical studies indicated that some properties of the PEAK system are: good reliability and validity as an assessment tool, effective treatment for the patients with ASD, and an easily-mastered operation in practice; which makes the PEAK system owning potential application value in the intervention delivered from behavioral analysists as well as autistic parents in the future.
Hits
Hits
Downloads
Comment