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文章分析了在一个角度和一个三角形中进行后方交会时最佳点位的规律,指出某些规程中有关后方交会问题的不足之处.  相似文献   
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This essay is concerned with organisational learning and, in particular, policy learning. Sometimes, organisations learn; sometimes they do not. Sometimes they use their acquired knowledge, but this is, not always the case.  相似文献   
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翻译作为一种双语信息的转换过程,难免会受到母语负迁移的影响。可从词汇和句法两个方面探讨母语负迁移对中国学生翻译学习的影响,并就如何帮助中国学生克服翻译学习中的母语负迁移提出了切实可行的对策,以便更好地促进翻译学习,提高学生的翻译能力。  相似文献   
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The purpose of this study was to investigate the use of a single 3-min all-out maximal effort to estimate anaerobic capacity (AC) through the lactate and excess post-exercise oxygen consumption (EPOC) response methods (AC[La?]+EPOCfast) on a cycle ergometer. Eleven physically active men (age?=?28.1?±?4.0?yrs, height?=?175.1?±?4.2?cm, body mass?=?74.8?±?11.9?kg and ?O2max?=?40.7?±?7.3?mL?kg?1?min?1), participated in the study and performed: i) five submaximal efforts, ii) a supramaximal effort at 115% of intensity of ?O2max, and iii) a 3-min all-out maximal effort. Anaerobic capacity was estimated using the supramaximal effort through conventional maximal accumulated oxygen deficit (MAOD) and also through the sum of oxygen equivalents from the glycolytic (fast component of excess post-exercise oxygen consumption) and phosphagen pathways (blood lactate accumulation) (AC[La?]+EPOCfast), while during the 3-min all-out maximal effort the anaerobic capacity was estimated using the AC[La?]+EPOCfast procedure. There were no significant differences between the three methods (p?>?0.05). Additionally, the anaerobic capacity estimated during the 3-min all-out effort was significantly correlated with the MAOD (r?=?0.74; p?=?0.009) and AC[La?]+EPOCfast methods (r?=?0.65; p?=?0.029). Therefore, it is possible to conclude that the 3-min all-out effort is valid to estimate anaerobic capacity in physically active men during a single cycle ergometer effort.  相似文献   
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随着教育改革的不断深入,中国学生发展核心素养为各个学科的教学实践提供了更有力的抓手和更细化的要求。作为中小学教育体系的重要组成部分,书法教育的开展也应当以核心素养为指导。通过厘清中小学书法教育对学生发展核心素养,尤其是在人文底蕴、健康生活、责任担当等方面的重大作用,分析现有中小学书法教育中对有效发展核心素养的制约因素,探究实现中小学书法教育促进学生发展的路径与策略。  相似文献   
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Has also been director or executive secretary of several educational projects in Brazil. Author of some twenty books and of numerous articles on education, training, science and technology.  相似文献   
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Queries submitted to search engines can be classified according to the user goals into three distinct categories: navigational, informational, and transactional. Such classification may be useful, for instance, as additional information for advertisement selection algorithms and for search engine ranking functions, among other possible applications. This paper presents a study about the impact of using several features extracted from the document collection and query logs on the task of automatically identifying the users’ goals behind their queries. We propose the use of new features not previously reported in literature and study their impact on the quality of the query classification task. Further, we study the impact of each feature on different web collections, showing that the choice of the best set of features may change according to the target collection.  相似文献   
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浅谈本科毕业论文的写作与指导   总被引:1,自引:0,他引:1  
从本科生毕业论文的选题、撰写、整理及答辩等环节出发,结合指导基础数学专业本科生毕业论文的实践经历,提出了一些看法与见解.  相似文献   
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