浅论教师在幼儿小提琴启蒙教育中的主导作用

由于小提琴演奏教学的特殊性,因此,近些年来在教育领域所提倡的"学生本位"的教学观,在小提琴的启蒙阶段还需要把握尺度。优秀的小提琴教师可以根据幼儿的身心特点,在启蒙教育阶段因人而异,因材施教,科学、系统训练,避免幼儿走弯路,降低学习的难度,更容易帮助幼儿克服困难,从而顺利学习。从这个意义上讲,教师在幼儿小提琴的启蒙教育中起着决定性因素,因此教师的主导作用毋庸置疑。本文就相关问题及解决方法做一具体阐述。     

Convergent genomic signatures of high-altitude adaptation among domestic mammals

Abundant and diverse domestic mammals living on the Tibetan Plateau provide useful materials for investigating adaptive evolution and genetic convergence. Here, we used 327 genomes from horses, sheep, goats, cattle, pigs and dogs living at both high and low altitudes, including 73 genomes generated for this study, to disentangle the genetic mechanisms underlying local adaptation of domestic mammals. Although molecular convergence is comparatively rare at the DNA sequence level, we found convergent signature of positive selection at the gene level, particularly the EPAS1 gene in these Tibetan domestic mammals. We also reported a potential function in response to hypoxia for the gene C10orf67, which underwent positive selection in three of the domestic mammals. Our data provide an insight into adaptive evolution of high-altitude domestic mammals, and should facilitate the search for additional novel genes involved in the hypoxia response pathway.     

Olivine-norite rock detected by the lunar rover Yutu-2 likely crystallized from the SPA-impact melt pool

Chang’E-4 landed in the South Pole-Aitken (SPA) basin, providing a unique chance to probe the composition of the lunar interior. Its landing site is located on ejecta strips in Von Kármán crater that possibly originate from the neighboring Finsen crater. A surface rock and the lunar regolith at 10 sites along the rover Yutu-2 track were measured by the onboard Visible and Near-Infrared Imaging Spectrometer in the first three lunar days of mission operations. In situ spectra of the regolith have peak band positions at 1 and 2 μm, similar to the spectral data of Finsen ejecta from the Moon Mineralogy Mapper, which confirms that the regolith''s composition of the landing area is mostly similar to that of Finsen ejecta. The rock spectrum shows similar band peak positions, but stronger absorptions, suggesting relatively fresh exposure. The rock may consist of 38.1 ± 5.4% low-Ca pyroxene, 13.9 ± 5.1% olivine and 48.0 ± 3.1% plagioclase, referred to as olivine-norite. The plagioclase-abundant and olivine-poor modal composition of the rock is inconsistent with the origin of the mantle, but representative of the lunar lower crust. Alternatively, the rock crystallized from the impact-derived melt pool formed by the SPA-impact event via mixing the lunar crust and mantle materials. This scenario is consistent with fast-cooling thermal conditions of a shallow melt pool, indicated by the fine to medium-sized texture (<3 mm) of the rock and the SPA-impact melting model [Icarus 2012; 220: 730–43].     

知觉预测领域专家-新手研究范式的元分析

摘要：研究目的：探讨知觉预测领域专家-新手研究范式的实效性和知觉预测领域专家-新手研究范式是否受体育项目、刺激材料、遮蔽方式的影响。研究方法：元分析方法。研究结果：知觉预测领域专家-新手研究范式中反应时、准确率、注视次数为大效应,注视时间、注视频率为中效应,且大、中效应稳定的。反应时、准确率、注视次数、注视时间、注视频率的效果量在不同体育项目、不同刺激材料、不同遮蔽方式上存在差异。结论：知觉预测领域专家-新手研究范式具有很好的实效性,其大、中效应的存在与专家认知优势有密切的关系;体育项目、刺激材料、遮蔽方式是知觉预测领域专家-新手研究范式的调节变量。     

浅谈音乐在艺术体操中的作用

论述了音乐在艺术体操中的作用及怎样选编艺术体操音乐（包括基本训练音乐和成套音乐）。并论述根据所选定的音乐如何对成套动作进行设计编排,同时还涉及在成套动作中对音乐的表现及音乐训练的部分方法。     

要遏制机遇因素在干部任用中的作用

机遇因素长期困扰我国人事任用工作。遏制干部任用中的机遇因素,主要应从坚持党管干部工作原则、改革人事制度、加强政治教育工作、加大人事工作反腐倡廉力度等方面作好工作,为建设一支高素质的干部队伍,提供组织保证、人才保证。     

关于破损档案揭粘技术

关于破损档案揭粘技术一、档案粘结原因及类型档案保存多年后,在多种因素影响下,有部分档案的纸张发生粘连。严重的粘结成块,像砖头一样结实,很难分离,人们常称之为“档案砖”。产生以上现象的原因极其复杂,主要是档案材料、环境、生物、人为等因素的综合作用。成因...     

构建高等医学院校体育课程体系的研究

贯彻落实《纲要》精神,坚持"健康第一、以人为本"的指导思想,在全面调研全国高等医学院校体育课程教学改革与成果的基础上,探索具有医学院校体育课程发展的新体系。体育课程建设要从培养学生创新意识入手,确立学校体育教育的多元化培养目标。合理利用和开发学校体育资源,营造丰富多彩的校园体育文化氛围,实现课内、外一体化,使学生终身受益。     

提升陕西民办高等教育办学水平和综合实力的若干思考

文章对陕西民办高等教育目前存在的问题进行了深入分析,并从培养目标、培养方案、培养体系、培养条件、市场导向的角度提出了提升陕西民办高等教育办学水平和综合实力的对策思考。     

高职服装群产学研结合人才培养模式的研究

基于高职服装产学研结合人才培养模式的外部环境和内部环境分析,详细论述了高职服装产业群产学研结人才培养模式的研究与建设的可行性、研究内容以及创新点.详细描述了高职服装产学研人才培养模式的课程体系建设、师资队伍建设等内容.着重于高职服装群产学研结合人才培养模式的创新.