我校图书馆查新站2004-2007年科技查新项目统计分析

科研立项、成果验收与鉴定、科技奖励、技术引进等均要通过科技查新来证明其新颖性。科技查新作为图书馆新兴的、具有高科技含量的技术工作是非常重要的。如何与学校科研教学相结合,为地方科技服务是摆在新时期图书馆馆员面前的新课题。     

An Examination and Validation of an Adapted Youth Experience Scale for University Sport

Limited tools assess positive development through university sport. Such a tool was validated in this investigation using two independent samples of Canadian university athletes. In Study 1, 605 athletes completed 99 survey items drawn from the Youth Experience Scale (YES 2.0), and separate a priori measurement models were evaluated (i.e., 99 items, YES 2.0, YES for Sport [YES-S]). Confirmatory factor analysis (CFA) and exploratory structural equation modeling (ESEM) results indicated issues with model fit. Post-hoc modifications improved fit, resulting in a 46-item, 9-factor model with five positive and four negative dimensions. In Study 2, 511 athletes completed the same items. The resultant model was confirmed using both CFA (comparative fit index [CFI] = .911, standardized root mean square residual [SRMR] = .056, root mean square error of approximation [RMSEA] = .040) and ESEM (CFI = .956, SRMR = .023, RMSEA = .034). The resultant University Sport Experience Survey provides a reliable and factorially valid instrument for measuring development in university sport.     

One hundred and fifty years of sprint and distance running – Past trends and future prospects

Sprint and distance running have experienced remarkable performance improvements over the past century. Attempts to forecast running performances share an almost similarly long history but have relied so far on relatively short data series. Here, we compile a comprehensive set of season-best performances for eight Olympically contested running events. With this data set, we conduct (1) an exponential time series analysis and (2) a power-law experience curve analysis to quantify the rate of past performance improvements and to forecast future performances until the year 2100. We find that the sprint and distance running performances of women and men improve exponentially with time and converge at yearly rates of 4% ± 3% and 2% ± 2%, respectively, towards their asymptotic limits. Running performances can also be modelled with the experience curve approach, yielding learning rates of 3% ± 1% and 6% ± 2% for the women's and men's events, respectively. Long-term trends suggest that: (1) women will continue to run 10–20% slower than men, (2) 9.50 s over 100 m dash may only be broken at the end of this century and (3) several middle- and long-distance records may be broken within the next two to three decades. The prospects of witnessing a sub-2 hour marathon before 2100 remain inconclusive. Our results should be interpreted cautiously as forecasting human behaviour is intrinsically uncertain. The future season-best sprint and distance running performances will continue to scatter around the trends identified here and may yield unexpected improvements of standing world records.     

陶瓷过滤机运行主要指标的回归分析

运用描述统计和回归分析的方法,建立了用于判断陶瓷过滤机是否高效运行的2个主要指标之间的回归模型。通过模型分析可知,给料浓度和利用系数之间有较强的线性关系,为提高陶瓷过滤机的过滤效率以及对机器的更新升级提供依据。     

语用模糊的认知分析

语用模糊就是交际过程中的交际参与者对意义的表述或者解释不确定的种种现象。文章从认知视角,用关联理论(Relevance Theory)和空间复合理论(Space Blending Theory)对语用模糊现象进行分析探讨,以解释言语交际中出现的语用模糊的认知心理过程。     

雷公山区贫困问题及扶贫开发--以雷公山国家级自然保护区乌东村为例

以雷山县丹江镇乌东村为例，对该村的贫困原因进行了分析研究，并提出了扶贫开发的思路及措施。     

微观经济理论的发展、扬弃提炼与缺陷分析——发达国家微观经济理论的批判与借鉴

发达国家微观经济理论以生产要素的合理配置为基础和研究核心,着重分析劳动力、资本、土地等生产要素的使用与相互替代,这也符合从生产力的角度研究企业及企业生产效率的提高问题;而现代企业理论则着重从生产关系的角度研究企业,虽然现代企业理论家并不懂得这一点;完全与不完全竞争市场中企业行为理论则着重研究企业与市场竞争形态的关系,从而确定企业行为。微观经济理论研究有许多方法,基础性分析建立在企业竞争行为、产品价格和供求规律基础上,随着经济实践的发展博弈论、信息经济学及不确定性逐步产生。但是无论研究内容还是方法发达国家微观经济理论都存在严重缺陷需要再认识     

篇章语言学中的语境与语篇分析

语境在语篇分析中的重要性体现在:语境有利于理解和建构单句语篇,有利于理解有歧义性的词和句,有利于明确代词的所指对象,有利于理解语篇中的省略。     

高校新生身心健康UPI调查结果的比较与分析

对多所高校新生UPI调查的筛选率、总分人数分布，自杀意念和主要心理症状的选择率进行了比较；并就各高校测查结果的差异性与一致性的原因及UPI调查与研究中存在的主要问题进行了讨论。     

EWB在《电路分析》课程教学中的应用

电路分析是一门很重要的专业基础课,而利用EWB软件进行教学及模拟实验仿真可以提高学生的学习兴趣,让学生更直观的掌握电路分析的基本理论,更有利于培养学生的实践技能和创新能力,本文就如何在<电路分析>课程教学中应用EWB软件辅助教学进行探讨.