信息技术在小学教育体育专业田径普修课教学中的应用

信息技术应用于小学教育体育专业田径普修课教学是提高教学质量的有效方法。优化教学内容和拓宽教学时空应加强开发互联网资源,发挥理论指导实践及两者相互渗透应制作田径多媒体课件,提高学生参与主动性应使用视频图像技术记录和分析学生技能表现,实现对学生进行过程性评价应充分利用计算机管理优势。     

延迟焦化过程抑制镍钒脱氢反应的初步研究

延迟焦化在原油深度加工中地位日益突出,其工艺技术进展的主要目标是最大限度地提高液体油收率。文章针对镍钒存在形态、脱氢反应的影响、抑制脱氢反应展开讨论,并提出钝化镍钒作用的对策,从理论研究找出切实可行的方法来指导生产实践。     

一种改进的 CCIWO 算法及在搜索纳什平衡点的应用

杂草算法（IWO ）是一种元启发式算法,模拟杂草定植和分布的过程,能够解决多维、线性和效率优化问题以及非线性优化问题。文章改进了IWO算法,并将其应用到电子市场优化中,通过查找市场存在的纳什平衡点,来对市场存在的最优方案进行查找。实验证明,该方法有效且精确度高。     

简析有效课堂教学

富有成效的英语堂教学是高校英语教育的关键。课堂教学中需要充分发挥教师与学生的主观能动性,使教师能够采用多种教学管理手段吸引学生的注意力,激发学生的学习积极性,从而使学生能够主动参与到课堂教学活动中,进而提高语言应用能力与自身素养。教师与学生的协作互动有利于课堂教学的开展。教师在课堂教学活动中应当及时辨识与合理把控学生的身心状态,使学生能够在教师的引导下积极有效开展课堂英语学习。     

Practical Student-centered Activities of Communicative Language Teach-ing-Unit 2 Text A:Animals (21st Century College English Book II)

English plays a very important role in our daily life and has been a world language for decades, as the global economy is developing so fast nowadays, the learners of English have already realized that...     

大学英语课堂新闻教学模式探析

作为内容教学法的一种重要实践方式,新闻英语教学增强了大学英语课堂趣味性,提高了学生学习积极性,扩大了学生视野,进一步提高了学生的英语听说读写能力。本文论述了新闻英语教学模式的具体践行方式,探讨了其对大学英语课堂的积极作用,并提出了如何在日常大学英语教学中更好地完善该教学模式。     

MasterCAM 2D动态铣削及其优势

MasrterCAM 2D动态铣削是世界技能大赛、全国数控大赛在数控铣削赛项中普遍采用的软件编程技巧。文章通过典型案例将MasrterCAM 2D动态铣削与其他铣削方式进行对比分析,梳理2D动态铣削的优势及应用技巧。     

十八大以来中国共产党对国内外矛盾的科学认识及应对策略研究

党的十八大以来,世情、国情发生了重大变化,国内外形势严峻复杂,中国特色社会主义的发展面临的机遇与挑战相互交织.文章运用马克思主义基本原理,从国内、国外两个视角出发,系统梳理十八大以来中国共产党对社会基本矛盾、社会主要矛盾、外部矛盾的理论内涵、发展特征、三重逻辑的科学认识及相应的应对策略,总结其中的理论与实践经验,从而阐...     

Extraterrestrial artificial photosynthetic materials for in-situ resource utilization

Aerospace milestones in human history, including returning to the moon and manned Martian missions, have been implemented in recent years. Space exploration has become one of the global common goals, and to ensure the survival and development of human beings in the extraterrestrial extreme environment has been becoming the basic ability and technology of manned space exploration. For the purpose of fulfilling the goal of extraterrestrial survival, researchers in Nanjing University and the China Academy of Space Technology proposed extraterrestrial artificial photosynthesis (EAP) technology. By simulating the natural photosynthesis of green plants on the Earth, EAP converts CO₂/H₂O into fuel and O₂ in an in-situ, accelerated and controllable manner by using waste CO₂ in the confined space of spacecraft, or abundant CO₂ resources in extraterrestrial celestial environments, e.g. Mars. Thus, the material loading of manned spacecraft can be greatly reduced to support affordable and sustainable deep space exploration. In this paper, EAP technology is compared with existing methods of converting CO₂/H₂O into fuel and O₂ in the aerospace field, especially the Sabatier method and Bosch reduction method. The research progress of possible EAP materials for in-situ utilization of extraterrestrial resources are also discussed in depth. Finally, this review lists the challenges that the EAP process may encounter, which need to be focused on for future implementation and application. We expect to deepen the understanding of artificial photosynthetic materials and technologies, and aim to strongly support the development of manned spaceflight.     

Benefits for immigrant-origin and nonimmigrant-origin youth of discussing immigration in gender and sexuality alliances

In a time of unprecedented polarization in the United States, particularly concerning immigration, schools are uniquely positioned to help students understand the consequences of drastic policy changes. Beyond formal settings such as social studies classes, extracurricular activities may be important for fostering discussions about sociohistorical and policy issues. Such discussions could serve to empower youth from marginalized populations and raise their critical consciousness. Yet the potential outcomes of discussions in these extracurricular settings have not been studied in depth. Using data collected in school-based Gender-and-Sexuality-Alliances (GSAs) throughout Massachusetts during the periods leading up to and following the 2016 US Presidential election, we examined whether discussions of immigration issues in GSAs were associated with greater empowerment and critical consciousness among 580 youth (M _Age = 15.59, range = 10–20 years). Multilevel structural equation models showed that the frequency with which youth discussed immigration, relative to their fellow members, was positively associated with residualized change in perceived peer validation for members in general and with residualized change in hope for immigrant-origin members only. Contrary to our expectations, we did not find significant associations for critical consciousness. Findings suggest how groups addressing issues of equity and justice can promote members' empowerment.