天体周日视运动过程中方位变化速度最慢点的确定     

钱玉林 《上海海事大学学报》1994,(3)

用拉格朗日乘数法确定天体周日视运动过程中方位变化速度最慢点的位置，从而使有关结论完整化。  相似文献   

微型雷达柔性多体传动系统运动问题分析     

张士元  郑百林  贺鹏飞 《闽江学院学报》2008,29(5):48-52

轴系装置由于不仅具有惯性而且具有弹性,因此在周期性荷栽作用下,会产生扭转振动,甚至于产生拍振．本文针对卫星微型雷达,建立多柔性体系统动力学仿真模型,研究多柔性体上的弹性振动对雷达捕捉目标精度的影响．研究表明,两个转动机构都出现了拍振现象;对雷达镜面的影响表现为明显的在x,y方向上的谐波干涉,并提出改进方案．  相似文献   

本科教学工作水平评估研究述评   总被引：2，自引：0，他引：2  

余天佐  谢安邦 《大学.研究与评价》2008,(9):52-56

随着本科教学评估全面铺开,高等教育理论界、官方人士和实践工作者对此展开了全面而深入的讨论,他们在肯定评估成绩的同时,普遍认为本科教学评估仍然存在不少问题。这些问题可以概括为:教学质量能否评估,本科教学评估属于总结性还是形成性,评估主体的一元与多元,评估指标体系的统一与分层分类,以及"要我评"与"我要评"的关系等。  相似文献   

基于“校企室”三方协同的现代学徒制高职高技能人才培养路径的探索与实践     

胡晓东 《宁波职业技术学院学报》2021,(2):37-44

目前现代学徒制模式下,高职高技能人才培养存在着校企双育人主体机制还不健全、教学模式不顺畅、校企课程交融不深入、教学评价体系不完善等系列问题,高职高技能人才培养质量还不能满足社会经济发展要求。对此,文章从学生技术技能培养、综合职业素质养成和社会人才需求的视角出发,重点引入省级技能大师工作室高技能人才培养平台,与学校、联盟企业联合组建“校企室”三方协同的现代学徒制高职高技能人才培养模式,搭建“校企室”三方育人主体的现代学徒育人平台,构建涵盖“通识、岗位、专项”三核心、四阶段的现代学徒制课程体系,创建多维度技术技能训练和实践的“专业实训室+企业现场+大师工作室”三场所构成的现代学徒制实训基地,建立“教、学、做、工、培、训”交替融合的现代学徒制教学实施模式,建立三方育人主体的现代学徒制人才培养标准,以及“柯氏四级评估模型”多元参与、四级评价的现代学徒制人才培养质量评价方法,并在数控技术专业试点,成效显著,为高职院校同类专业开展三方育人现代学徒制人才培养提供参考与借鉴。  相似文献   

加速度瞬心问题的讨论     

王志刚  王耀华 《唐山师范学院学报》2004,26(2):50-51,57

利用加速度瞬心的概念，推导了加速度瞬心相对静系、动系的坐标公式及任一点相对加速度瞬心的加速度表达式。  相似文献   

Busy yet passive: (non-)decision-making in school governing bodies     

Helen Young 《British Journal of Sociology of Education》2017,38(6):812-826

School governing bodies in England have considerable powers and duties, and their formal role positions them as decision-makers. This article draws on qualitative research in the governing bodies of four maintained schools. Using deliberative democracy as a sensitising concept, the article considers some processes by which decisions are made (or not made) in governing bodies. Without claiming that governors never make decisions, it explores constraints and limitations on their ability to do so. Governors exhibit a paradoxical combination of busy-ness and passivity. On the one hand, governing bodies are constituted and structured around activity and technically decisions were made. On the other, decisions could rarely be attributed to active choices by governors. Rather, their more passive agreement with actions and positions was presented as almost unavoidable ‘common sense’, either due to the national policy context or the headteacher’s presentation of the available options.  相似文献   

混凝土薄壁池体爆破方法研究     

刘凤文  薄树祥 《河北能源职业技术学院学报》2006,6(3):69-70,72

本文针对薄壁池体,从爆破工程实际出发以减小爆破公害、提高爆破效率为目的,提出适合薄壁池体的爆破新方法--"水土压爆破".通过分析论证、同常规方法的对比,可知新方法对于薄壁池体是爆破技术领域的一大进步.  相似文献   

多主体供给社区公共产品   总被引：2，自引：0，他引：2  

李雪萍 《华中师范大学学报(人文社会科学版)》2006,45(6):24-28

政府、企业、非营利组织、居民等多主体的合作是社区公共产品供给必经途径,多主体角色不清、功能错位已成为社区公共产品供给的瓶颈,消费者、供应者、生产者之间分开、连结、合作生产理论,为理顺主体关系提供分析工具,基于政府在各主体中的主导地位,其机制创新为建立主体间的合作关系奠定基础。  相似文献   

Using visual methodologies to understand pre-service Health and Physical Education teachers’ subjectivities of bodies     

Valeria Varea  Bonnie Pang 《Sport, Education and Society》2018,23(5):394-406

Socio-cultural theorists have argued that having a diverse understanding of subjectivities of normal/ideal bodies is important for Health and Physical Education (HPE) teachers. When teachers hold a single understanding and perception of normal/ideal bodies, such as a thin body as normal or ideal body, which are usually informed by dominant discourses, they may (re)produce narrow understandings of bodies among their students. This paper focuses on how a group of pre-service HPE specialist teachers (11 females and 3 males, aged between 18 and 26 at the time of the first interview) from an Australian university, discuss issues related to subjectivities of bodies. It draws on visual methodologies and semi-structured interviews to understand how these pre-service HPE specialist teachers construct discourses of bodies. Foucault’s concepts of normalisation, surveillance and biopedagogies are used to explore discursive constructions of bodies, with a particular focus on how some discourses are normalised via surveillance techniques. The results of the study invite us to reflect on how images may promote certain ways of thinking about and considering the body among pre-service HPE specialist teachers. In light of contradictions which were found across the comments of two participants who constructed different discourses during the interviews, we posit that making sense of subjectivities of bodies is complex and often contradictory. Furthermore, the results suggest that photo elicitation is a useful visual method for theorising issues related to bodies. Results can inform teacher education and policy in how to better prepare pre-service HPE teachers to teach about bodies.  相似文献   

Current status of cadaver sources in Turkey and a wake‐up call for Turkish anatomists          下载免费PDF全文

İlke Ali Gürses  Osman Coşkun  Adnan Öztürk 《Anatomical sciences education》2018,11(2):155-165

Persisting difficulties in body procurement in Turkey led to the acquisition of donated, unclaimed, autopsied, and imported bodies regulated under current legislature. Yet, no study had investigated the extent of the on‐going cadaver problem. This study was aimed to outline cadaver sources in anatomy departments and their effectiveness by means of an online survey. Additionally, official websites of each department were investigated regarding any information on body donation. Unclaimed cadavers (84.8%) were the major source for anatomy departments, followed by donated (50%) and imported cadavers (39.1%). Foundation‐based medical faculties were more likely to import cadavers (P = 0.008). There was a moderate increase (r_s = 0.567; P = 0.018) in donation registrations to our department after 2000. The departments in cities with significantly higher City‐Based Gross Domestic Product measures (US$9,900 vs. US$16,772, P = 0.041), frequencies for mid‐ or high‐school graduates (30.4% vs. 31.3%, P = 0.041), and frequencies for under‐ or post‐graduates (13.1% vs. 15.8%, P = 0.24) had managed to use donated cadavers. Anatomy departments’ major reasons for using unclaimed cadavers were education (45.9%), unclaimed cadavers being the only source (24.3%), and receiving inadequate donations (21.6%). Nine out of seventy‐four departments (12.2%) provided information regarding body donation on their websites. Body procurement remains as a serious problem in Turkey and it is apparent that current legislature does not provide a sufficient cadaver inflow. Similarly, anatomy departments’ effectiveness in public awareness of body donation and support in the National Body Donation Campaign seems questionable. Anat Sci Educ 11: 155–165. © 2017 American Association of Anatomists.  相似文献