中长跑的战术研究

中长跑比赛战术，是运动员战胜对手，夺取金牌的比赛方案。是运动员训练水平和比赛能力的综合体现。随着运动训练水平的不断提高。运动水平的接近。比赛时，跑的战术应用。将对战胜对手起着越来越重要的作用。     

广义基本有限生成的TS1-模的性质

定义了广义基本有限生成的TS1-模.主要证明了广义基本有限生成的TS1-模的广义基本有限生成的type子模是广义基本有限生成的TS1-模;M是广义基本有限生成的TS1-模当且仅当对M的任意广义基本有限生成子模N,存在KIM,使得N≤geK.     

‘It's more flexible’: persistence of women engineers in the academy

The under-representation of women in engineering is an issue of concern for policy-makers. While much of the existing literature has focussed on understanding reasons for women's under-representation in engineering and related technical fields, there is a paucity of research that examines why women who are already in engineering persist. This study aims to answer the question, why do women engineers in academe persist in a discipline that is generally perceived to be inhospitable to women. Three main challenges, namely gender discrimination, lack of institutional and disciplinary support, and the rigid nature of the workplace, emerged as key impediments to women engineers in the private sector. In contrast, women engineers in the academy identified the flexibility offered by academic environments, the presence of personal support networks, and a passion for teaching and students as critical factors that influenced their decision to remain in academia.     

Diagnostic Dilemma of HbA1c Detection in Presence of a Hemoglobinopathy: A Case Report

We report a case of a diabetic, heterozygote with near normal hematology, marginally low level of hemoglobin A₂(HbA₂) having an increased level of hemoglobin F(HbF) that was pancellularly distributed among the red cells. BioRad DiaSTAT measurements gave a high glycated hemoglobin A1c(HbA1c) of 31.5% and the BioRad Variant analyzer recorded an HbA1c value which was very low, in discordance with the detected blood glucose levels. Flow cytometry and polymerization chain reaction (PCR) based studies were carried out which revealed the case to be that of the common hereditary persistence of fetal hemoglobin (HPFH)-3, an Asian Indian mutation. Fructosamine estimation and HbA1c by Boronate affinity chromatography were able to resolve the discordant value detected and was able to confirm the diabetes status. The case would have been a diagnostic dilemma, if reported without correlation.     

延缓生长法在试管内保存牛皮杜鹃种质初探

以牛皮杜鹃嫩茎基部直接再生形成的丛生芽团为试材,应用均匀设计法探讨了影响牛皮杜鹃丛生芽团试管保存的主要因子和水平,同时筛选最适于牛皮杜鹃丛生芽团试管保存的培养基,结果表明:最适宜的丛生芽团试管保存培养基为:DR+根皮苷2.70 mg/L+KT0.70 mg/L,保存46个月生长率仅为1.12%.对保存前后的芽苗分化的结...     

从速度的定义谈运动的本质

分析了速度概念的起源、目的和意义,并从匀速运动的速度定义式中揭开了时间引入物理学中的深刻含义,即定义式中的时间就是一种假想的、抽象的匀速运动。从瞬时速度的定义中发现,描述客观运动的物理量只能反映运动的某个属性,并不是整个运动本身。进一步分析了用动量和动能来量度运动的意义。     

引文网络中入度分布的特征研究——以图情领域为例

以图情领域的四种优秀期刊为数据来源,借助散点图与曲线拟合的方法,在论文、作者、机构三个层面上归纳了引文网络中入度分布的三个特征。其一,三个层面的入度分布均呈现幂律分布,优先连接机制起明显作用;其二,在机构的入度分布出现了单峰,即均匀连接机制存在于引文网络中,且削弱了入度分布近似直线的程度;其三,二八律与幂律分布存在紧密联系。论文最后对这些特征的形成原因进行了分析。     

盈余持续性与公司治理实证研究——来自沪深上市公司的经验证据

目前,大量研究探讨了盈余持续性与公司价值显著关联性,而对盈余持续性与公司治理的关系研究不够深入,为寻找经验证据和丰富这方面的研究,本文以沪深A股上市公司2009年数据为基础,以实证方法考察了公司治理对企业盈余持续性的影响,通过对这些最新数据进行研究后结论为：股权结构特征对会计盈余持续性有显著影响,尤其是股权集中程度对会计盈余持续性有积极的影响作用,公司规模也是影响会计盈余持续性的重要因素。     

带双参数的四次均匀 B 样条

文中给出了带两个形状参数的四次均匀B样条基函数,由其构造的样条曲线可以通过改变形状参数λ,μ的取值调整曲线的形状,其中参数λ控制整条曲线位置,参数μ对曲线作局部调整.     

初一学生数学学习动机和坚持性:数学——性别刻板印象的影响

为探究数学—性别刻板印象对初中生数学学习动机和坚持性的影响以及性别差异,采用外显数学刻板印象量表、内隐数学—性别联想测验、数学学习坚持性量表和数学学习动机量表,对初一学生进行测查.结果显示:(1)总体上,初中生不存在外显数学刻板印象,而存在内隐数学刻板印象;(2)性别调节外显数学刻板印象与数学学习动机的关系,并且进一步影响学生的数学学习坚持性.具体而言,男生的外显数学刻板印象通过提高学习动机影响学习坚持性;而对于女生,外显数学刻板印象却会降低学习动机影响学习坚持性.但内隐数学刻板印象并不存在类似调节和中介效应.在教育实践中,教师应充分重视数学刻板印象给男、女初中生数学学习活动带来的不同影响,并实施有效的预防和弥补措施.