科创中国

The existing research of steering comfort mainly focuses on the subjective evaluation,aiming at designing and optimizing the steering system.In the development of steering system,especially the evaluation of steering comfort,the objective evaluation methods considered the kinematic characteristics of driver steering maneuver are not proposed,which means that the objective evaluation of steering cannot be conducted with the evaluation of kinematic characteristics of driver in steering maneuver.In order to propose the objective evaluation methods of steering comfort,the evaluation of steering movement quality of driver is developed on the basis of the study of the kinematic characteristics of steering maneuver.First,the steering motion trajectories of the driver in both comfortable and certain extreme uncomfortable operation conditions are detected using the Vicon motion capture system.The operation conditions are under the restrictions of the vertical height and horizontal distance between steering wheel center and the H-point of driver,and the steering resisting torque else.Next,the movement quality evaluation of driver steering maneuver is assessed using twelve kinds of evaluation indices based on the kinematic analyses of the steering motion trajectories to propose an objective evaluation method.Finally,an integrated discomfort index of steering maneuver is proposed on the basis of the regression analysis of subjective evaluation rating and the movement quality evaluation indices,including the Jerk,Discomfort and Joint Torque indices.The test results show that the proposed integrated discomfort index gives a good fitting with the subjective evaluation of discomfort,which means it can be used to evaluate or predict the discomfort level of steering maneuver.This paper proposes an objective evaluation method of steering comfort based on the movement quality evaluation of driver steering maneuver.

Objective Immediate physical exercise has been recommended for patients in the recovery phase to improve survival and quality of life(QOL)and reduce recurrence of disease.The new NCCN Guidelines for Survivorship also highlighted the role of exercise in post-cancer health,encouraging patients to perform light physical activity following treatment.The aim of our study is to effect of Tai Chi Chuan(TCC)on serotonin and cortisol for monitoring stress and QOL in post-treatment breast cancer patients.Methods Totally85 post-treatment breast cancer patients were enrolled in this study to observe the effects of practicing TCC on recovery,as well as stress and happiness which are indicators of QOL of in patients.Peripheral blood was drawn from study subjects to analyze the levels of serotonin,cortisol and high sensitive C-reactive protein(HSCRP)at baseline,and at 3,6 and 12 months of TCC practice.Blood was drawn from healthy subjects only at baseline.A QOL questionnaire was administered to study subjects at three time points throughout the study,and once for healthy controls.The data were processed by analysis of variance of repeated measurement.Results At 3,6 and 12 months time points following regular TCC exercise,WBC,RBC,hemoglobin in blood samples showed a statistically significant difference(F=161.55,172.14,289.73;all P=0.00);the level of serotonin(biomarker for well-being),cortisol(indicator of stress)and HS-CRP(biomarker for inflammation)showed a statistical improvement(F=307.46,182.85,102.23;all P=0.00).After 3,6 and 12 months of regular TCC exercise,according to the results of QOL questionnaire,the indicators including quality of sleep,perceived hunger,fatigue,contentment,stress and social interaction presented a significant difference(F=312.98,222.64,543.90,46.05,28.10,78.92,all P<0.05),while there was no statistical difference in life dissatisfaction(F=56.61,P=0.166)Conclusions TCC physical activity for post-treatment breast cancer patients improved QOL and overall well-being,leading to improved mental,physical and psychological functioning.Regulated levels of serotonin and cortisol mediated by TCC exercises are proved to be vital for continued good health.

河北省引黄输水工程是解决河北省水资源危机的有效措施.从1993年开始的引黄输水工程,为缓解河北省水资源紧张发挥了重要作用.通过对引黄输水水质监测结果分析,通过对8次引黄输水水质评价,在对所监测的项目中.有3次输水没有超标现象,有3次污染物的超标倍数小于或等于1,有2次超标倍数在1.2~2.8之间.从输水水质主要污染物分析,主要污染物为氨氮、挥发酚、总磷、总锰、总镉.根据对黄河水源水质资料分析,氮类污染和金属类污染主要受缓和黄河水源的影响,挥发酚、总磷污染主要受河道环境的污染.通过对引黄调水水质评价,受黄河水源和沿途河道的影响,引黄调水水质存在较大的不确定性.因此应加强对引黄调水水质的监测,为用水部门及时提供调水水质信息,以便制宰相席的用水方案.

施工中土工膜的接缝试验检测有严格的质量标准,同时土工膜焊缝又是防渗的质量控制重点,施工中通过对土工膜检测设备的改进,缩短了土工膜的施工及焊接检测、验收的时间,保证了渠道工程的施工质量,加快了施工进度;达到了较理想的使用效果.

水泥混凝土路面具有良好的抗冲击、抗冻、抗裂性能,有利于延长路面使用寿命、能有效减小路面截面厚度等优点.结合2010年度新沂河整治水泥混凝土路面防汛道路工程,介绍混凝土路面工程结构及施工特点,并对施工质量控制具体措施、混凝土路面质量检测及评定方法进行探讨,旨在为水泥混凝土路面在水利堤防配套防汛道路工程中的推广及应用提供借鉴.

与发达国家相比.我国教师教育职前培养质量评价缺乏整体教育服务意义上的专业标准.结合中美教师教育质量评价等已有指标体系或模型.研究分析武汉高校师范生和一线教师相关调查的数据,结果显示:办学思路、资源管理(含师资条件)、课程教学、教育实践、学生收获是影响我国教师教育职前培养标准化质量评价的五个核心要素:通过对"SMTCI"结构方程模型进行拟合度检验、路径分析和效应分析,得出了建立我国教师职前培养质量评价的内在联系性、冲突性、核心因子簇和基本发展思路.

糯扎渡水电工程的质量管理借鉴了国内外其他工程的先进经验,同时又具有鲜明的"糯扎渡特色".通过不断创新质量管理理念、建立健全工程质量管理体系、加强体系运行的有效性,基本做到了制度建设无缺漏、管理过程无漏洞、监督实施无缺为.采用事前控制及早预防、事中控制及时纠正、事后控制总结经验,互相衔接、严格把关,保证了糯扎渡水电工程质量在控、受控.

对档案利用服务质量的评价不能只停留于综合档案馆的自我评价,社会公众即档案利用者才是档案利用服务质量评价的主体力量.本文从利用者本位的视角出发,尝试提出了一种社会公众参与的档案利用服务质量评价的指标体系和评价量表,以期推动综合档案馆档案利用服务质量的规范化管理.

结合南水北调天津干线工程建设管理具体工作实践,对南水北调中线天津干线施工控制体系构建、主要做法和成功经验进行了分析梳理总结,结果表明南水北调天津干线工程施工中的土方工程、混凝土工程,施工受季节影响以及施工工期受资源配置、施工方案的选择影响较大,在建设实施过程中通过合理安排施工,配置资源合理,优化施工方案,充分发挥整体钢模台车的整体优势,对加强工程实体质量控制等方面的实践是成功的,对进一步提高南水北调天津干线工程以及其它大型水利工程建设水平具有一定的借鉴意义.

介绍了变频调速技术的节能原理,阐述了基于PLC和变频器控制的恒压供水特点,完成了一台变频器控制四台水泵实现恒压供水的具体要求,设计了硬件控制回路和软件编程方法.实际运行证明,变频恒压供水系统控制简单、可靠性高、保护功能完善、节能效果明显.