基于ArcObject 的HFC 网管组件设计

基于组件A rcO b ject 平台, 提出了HFC 网管系统组件开发结构和总体构架, 给出了行业组件设计和 部分实现。基于组件技术的优势不仅仅在于软件的设计和开发上, 在后期的维护和升级方面也提供了很大的方便 和灵活, 为HFC 网管G IS 系统的建设也提供了较好的解决方案。福建省重点科技项目(编号: 2001ö lf020) ; 福建省自然科学基金项目(编号: E0110007) 资助

高校图书馆创意迎新的策划、实施与效果评估

迎新工作是高校图书馆的常规任务。厦门大学图书馆突破传统规程创意迎新,为大学新生提供了更好的服务,展现了馆员们的智慧和特长,加强了团队合作

“双一流”建设背景下高校图书馆发展趋势——ACRL《学术图书馆发展趋势报告》解读与启示

美国大学与研究图书馆学会发展趋势报告是学术图书馆了解当前环境,制定未来发展规划的重要指导性报告。当前国内高校正处于"双一流"建设起步阶段,趋势报告为高校图书馆发展转型提供了可供借鉴的参考。结合历年趋势报告和"双一流"建设基本任务,文章从五个方面对高校图书馆未来发展趋势进行了研究:关注高等教育环境变化,加强学科服务,打造立德树人基地,重视特藏建设,搭建产学研桥梁等。2017年福建省中青年教师教育科研项目(文献信息资源共享与服务研究专项)“高校图书馆开放数据服务模式与平台研究”(JZ170289

基于偏好统计数据表征的鲁棒几何模型拟合方法

鲁棒几何模型拟合是计算机视觉的一个基础性研究问题,广泛应用于各类计算机视觉任务,如单应性矩阵或基础矩阵估计、图像匹配、医学图像分析等。它的主要任务是:在包含噪声点和离群点的数据集中估计模型实例的参数和个数。针对该任务,本文提出一种基于新型数据表征(称之为偏好统计数据表征)的模型拟合方法。该新型数据表征算法将残差值进行排序然后映射到不同的区间以构建残差直方图数据表征,来描述数据分布的特征。该算法充分利用传统模型拟合方法中偏好分析和一致性统计分析的优点,更加有效地对数据分布特征进行描述,从而有效地提高数据表征的准确性和鲁棒性。为了进一步有效地利用该数据表征中的统计信息(内点和离群点显示出显著的信息熵值差异),本文利用直方图中不同区间段所映射的残差值的出现频次,以分析直方图的特性。并且采用一种简单的自适应熵阈值算法,来区分内点与离群点以进行离群点检测。最后,为了能够更好地处理分布在交叉模型实例附近的数据点,本文引入一种基于相似矩阵学习的图聚类技术,提出一个有效的模型实例估计算法。该算法先是用聚类技术以实现数据的分割,进而估计模型实例的参数。同时,该模型实例估计算法结合拉普拉斯矩阵特征值的分析..

The properties of action potential and sodium-calcium exchange tail current of rabbit right ventricular outflow tract myocytes

目的研究兔右室流出道(rVOT)心肌细胞动作电位及钠钙交换尾电流(InCX,TAIl)相关特性,探讨源于rVOT室性心律失常的发生机制。方法采用全细胞膜片钳技术记录兔右室(rV)游离壁和rVOT心肌细胞的动作电位,在不更换细胞及电极内液情况下连续记录InCX,TAIl,对比分析两者动作电位和InCX,TAIl特性。结果兔rVOT心室肌细胞动作电位复极时程(APd)的变异程度大于rV游离壁心肌细胞。在rVOT心肌细胞记录到早期后除极及显著延长的APd。动作电位显著延长及后除极的rVOT心肌细胞所对应的InCX,TAIl到达峰值时程较动作电位正常的细胞延迟,并且电流强度大于rV游离壁对照组心肌细胞(P<0.05)。结论 rVOT心肌细胞APd变异程度大,而且APd显著延长的rVOT细胞InCX,TAIl到达峰值时程延迟及相应电流显著增大,这是rVOT部位好发触发活动的重要机制。Objective To explore the electrophysiological basis of arrhythmogenesis in right ventricular outflow tract(RVOT) myocytes of rabbit heart.The properties of action potential and sodium-calcium exchange tail current(INCX,tail) in rabbit RVOT cells were observed.Methods Patch-clamp technique was used to measure INCX,tail and action potential in single myocytes obtained by enzymatic dispersion of rabbit ventricle.Results Marked variability of action potential repolarization was observed in rabbit RVOT cardiomyocytes.The events of early afterdepolarization(EAD) and marked action potential duration(APD) extension were recorded in RVOT cells.The peak of INCX,tail was delayed significantly in marked APD extension RVOT cells compared to RV free wall cells,and the amplitude of INCX,tail in the former was larger than the latter ones(P<0.05).Conclusion In rabbit RVOT cardiomyocytes,prolonged APD might be the induction factor of delayed afterdeporization and EAD genesis.Under this precondition,the late-peaking and larger amplitude of INCX,tail in RVOT cells might play pivotal role in the mechanism of RVOT arrhythmogenesis.厦门市卫生局资助项目(No.A0000258

Conceptual design of clean separation of ternary mixture of acetone-tetrahydrofuran-water

Based on the thermodynamics analysis of the mixture of acetone, tetrahydrofuran (THF) and water, the conceptual design of a clean separation process for this mixture was developed. Extractive distillation was used to separate water from the other two components. Different extractive solvents were compared through simulation with Aspen plus and it was found that triethylene glycol (TEG) was a highly selective and energy saving solvent.The extracted water could be separated from extractive solvent by ordinary distillation. The simulation result s f rom Aspen plus showed that the separation of THF and acetone could be achieved by azeot ropic distillation using cyclohexane or carbon bisulfide ( CS2 ) as azeot ropic solvent according to different end requirement s. When CS2 was used as azeot ropic solvent, high purity THF could be obtained while accompanied by wit h high energy cost due to low CS2 content in the binary azeot ropic mixt ure of CS2 and acetone. If cyclohexane was used as azeot ropic solvent , a great deal of energy could be saved at the sacrifice of reduced purity THF. The separation of an azeot ropic solvent and acetone could be realized through a liquid-liquid extraction process using water as extractive solvent.No waste water and other waste liquid were produced during the whole separation process thanks to the recycling of extractive solvent and azeot ropic solvent. Therefore the separation process developed here could be considered as a clean separation process

半导体量子点中强耦合磁极化子的性质

采用线形组合算符和么正变换研究了磁场对半导体量子点中强耦合磁极化子基态的影响.结果表明,磁极化子束缚能、磁极化子振动频率随有效束缚强度增大而减小,随电子-体纵光学声子耦合强度增大而增大,随磁场强度增大而增大,即均由于半导体量子点的受限和磁场的增大而使量子点的极化加强,因此半导体量子点的极化是不容忽略的

穆斯堡尔谱分析中洛仑兹函数拟合的线性化技术

提出了一个不用迭代过程拟合治仑兹函数的改进方法．通过对实验穆斯堡尔谱的分析，检验了本方法的有效性，并与非线性最小二乘法及有关文献提出的非迭代拟合方法进行了比较，表明本方法能给出满意的结果

Design of HFC Network Management Component based on ArcObject

基于组件A rcO bject平台,提出了HFC网管系统组件开发结构和总体构架,给出了行业组件设计和部分实现。基于组件技术的优势不仅仅在于软件的设计和开发上,在后期的维护和升级方面也提供了很大的方便和灵活,为HFC网管GIS系统的建设也提供了较好的解决方案。Based on component ArcObject platform,this paper presents the developing structure and overall architecture of HFC network management system component,and describes the design of trade component and implementation of some of them.The advantages of componentbased technique is not only for software design and development,but also for convenience and flexibility in maintenance and upgrading later.And at the same time,it is a better solution for GIS system construction of HFC network management.福建省重点科技项目 (编号 : 2 0 0 1lf0 2 0 ) ;;福建省自然科学基金项目 (编号 : E 0 1 1 0 0 0 7 )资助

甜高粱汁液的生物储存方法

<p><font face="宋体" size="3">发明提供了一种甜高粱汁液的生物贮存方法，是将新压榨的甜高粱汁液送入密闭贮罐，调整pH值至4.5～6.5，泵入灭菌罐，于温度60～90℃下蒸汽灭菌30～60分钟；然后冷却至10～25℃，除去沉淀，加入汁液质量0.01％～0.1％的酶搅拌均匀，立即泵入带有单向呼吸阀的密闭贮罐贮存。本发明利用微生物低温生长缓慢、向单一方向代谢的过程，竞争性抑制其它微生物的生长繁殖，从而达到保护汁液不变质的目的。实验证明，甜高粱汁液通过本发明生物贮存，三个月不变质。</font></p