两种简便测定尿肌酐排出量的方法

采用实验评定法,对同一天的尿液分别测定两个时段的尿肌酐量、晨尿肌酐量及全日尿肌酐量,并对两种简便测定尿肌酐的方法进行分析比较。结果表明,两段尿测定法与一段尿法均能比较客观代表全日尿肌酐量。     

论军事五项体能监测指标的构建

运用文献资料法、专家访谈和专家调查法,对优秀军事五项运动员体能耐力监测指标进行了初步筛选,并对体能耐力指标进行降维分层。在此基础上运用聚类、逐步回归和综合评价等研究方法,初步建立了科学反映军事五项男运动员体能监测指标体系和回归方程以及体能单项和综合评价标准。     

“最佳二传竞技水平”的概念模型开发及测评方法

为了克服“二传竞技水平”测评指标的选用及量化难度大的困难;为了提供一套科学、客观、实用的多指标测评体系,以“三论归一学说”为理论指导,把二传的本质是“变换器”作为测评体系的开端,以开发“最佳二传竞技水平”的概念为基础,以具有权威性和代表性的文献为依据,建立了“最佳二传竞技水平”的概念模型,并结合测评原则推演出模型指标体系。指标体系经理论论证、专家验证、实践检验后证明：满足测量学的“三性”要求,不仅能为参赛二传手的二传竞技水平排序,而且其量化分析报告能为二传训练提供指导性的反馈信息。     

Author ranking evaluation at scale

We evaluate author impact indicators and ranking algorithms on two publication databases using large test data sets of well-established researchers. The test data consists of (1) ACM fellowship and (2) various life-time achievement awards. We also evaluate different approaches of dividing credit of papers among co-authors and analyse the impact of self-citations. Furthermore, we evaluate different graph normalisation approaches for when PageRank is computed on author citation graphs.We find that PageRank outperforms citation counts in identifying well-established researchers. This holds true when PageRank is computed on author citation graphs but also when PageRank is computed on paper graphs and paper scores are divided among co-authors. In general, the best results are obtained when co-authors receive an equal share of a paper's score, independent of which impact indicator is used to compute paper scores. The results also show that removing author self-citations improves the results of most ranking metrics. Lastly, we find that it is more important to personalise the PageRank algorithm appropriately on the paper level than deciding whether to include or exclude self-citations. However, on the author level, we find that author graph normalisation is more important than personalisation.     

Four pitfalls in normalizing citation indicators: An investigation of ESI’s selection of highly cited papers

InCites Essential Science Indicators is becoming increasingly used to identify top-performing research and evaluate the impact of institutes. Unfortunately, our study shows that ESI indicators, as well as other normalized citation indicators, have the following flaws. First, the publication month and the online-to-print delay affect a paper’s probability of becoming a Highly Cited Paper (HCP). Papers published in the earlier months of the year are more likely to accumulate enough citation counts to rank at the top 1% compared with those published in later months of the year. Papers with longer online-to-print delays have an apparent advantage for being selected as HCPs. Research field normalizations lead to the third pitfall. Different research fields have different citation thresholds for HCPs, making research field classification important for a journal. In addition, the uniform thresholds for both articles and reviews in ESI affect the reliability of HCP selection because, on average, reviews tend to have higher citation rates than articles. ESI’s selection of HCPs provides an intuitive feel for the problems of normalized citation impact indicators, such as those provided in InCites and SciVal.     

温州经济发展存在的问题及对策——基于温杭甬台绍金经济指标的比较

温州经济发展面临着“追兵渐近、标兵渐远”的态势。通过温杭甬台绍金在总量指标、质量指标、投资指标、出口指标和消费指标五大经济指标的比较分析发现，温州经济发展存在高商务成本、投资生态圈未戍形、中心城市扩容窄、物流平台拓展落后、深陷民间借贷和联保等问题。在当前重大转型升级期，温州应采取打好互保链这张牌，改善软环境，借城市经济“外推”服务业等切实有效的措施，用以助推温州经济进一步发展。     

Helical angle measurement of worm by a coordinate measuring machine and its uncertainty evaluation

The purpose of the study concerns the measurement of worm’s helical angle by a coordinate measurement machine in the ambient industrial environment. The novel measurement method and sampling strategy were described firstly. This method used the coordinate measurement machine to measure both of the worm gear’s left and right surfaces. The worm surface was reconstructed based on the measured data of all the sampling points. Then a middle cylinder was established to truncate the fitted worm surfaces, and the truncated spiral lines were straightened to calculate the helical angle. The measurement uncertainty of worm’s helical angle was evaluated by taking the difference of calculated helical angles along the truncated spiral lines on both the left and right side surfaces of the worm. Twenty-four measurement experiments show that the maximum measurement error of the proposed method is 0.105, and the measurement error ratios are all less than 3.5?. The result means that the measurement method can realize the precision measurement of worm’s helical angle and can be employed in the generally industrial application.     

基于三坐标测量仪的特征线数据采集方法

阐述了三坐标测量仪数据采集在逆向工程中的重要作用.通过研究三坐标测量仪数据采集的基本原则和路径规划方法,提出了基于三坐标测量仪的特征线数据采集方法,实现了基于三坐标测量仪的简单型面及自由曲面的数据快速采集.     

用透镜测量柔软微细物体

介绍了用透镜测量柔软微细物体的原理、装置，方法步骤及误差分析。