微信小程序赋予图书馆内部办公自动化的新可能性及实践重点——以厦门大学为例

在对微信小程序\"核心能力\"分析的基础上,以现实需求为导向,立体对比了三种主要技术路线,阐述了微信小程序在助推图书馆内部办公从\"自动化\"向\"移动化\"全面演进中的无限潜力。通过厦门大学具体实践中的几个应用场景,真实展现小程序在内部管理效率提升方面的优势,不仅是抛砖引玉,更是为了探讨实践中的开发思路和技术难点

Waterproof Performance of Gypsum Modified by Silane Coupling Agent and Polyvinyl Alcohol

以硅烷偶联剂A151和聚乙烯醇(PVA)为防水剂,研究石膏制品的防水性能。从微观形貌、接触角、石膏晶体表面的元素分布等方面,探讨其防水机理。结果表明,A151可以将亲水的石膏表面转变为憎水表面;PVA能在保留石膏制品质轻的同时,填充毛细孔,提高强度性能;两者复合使用可以显著提高石膏制品的防水性能。A151/PVA复合防水剂的制备工艺简单,并适用于非碱性环境,对石膏制品质轻的特性无明显影响。浸水2 H后,试样的吸水率仅为0.9%,其湿强仍然是普通石膏制品干强的1.4倍。Waterproof performances of gypsum products were studied by adding waterproof agents of silane coupling agent A151 and polyvinyl alcohol( PVA).Their waterproof mechanism was discussed through microstructures,contact angles and surface element distribution of gypsum products.A151 changed the surface wetting performance of gypsum from hydrophilicity to hydrophobicity.PVA was filled in the capillaries of gypsum products,which improved their mechanical strength without increase of their density.Therefore,waterproof abilities of gypsum products were significantly improved by combined waterproof agents of A151 and PVA.At the same time,it is a facile process to prepare the composite waterproof agent.They can be used under non-alkaline condition,and retain the light-weight property of gypsum.After soaking in water for 2 h,the obtained samples had water-absorption capacities as low as 0.9%,and their wet strength still remained 1.4 times that of dry strength of original gypsum products

学术期刊划分及在期刊管理中的应用

学术期刊是图书馆行业理论探讨和业务实践中经常提到的概念,一般学术期刊是指学术性较强的期刊,是相对于非学术期刊而言的。但学术期刊的完整定义以及它的划定范围相对比较模糊,相关研究只是一语带过,且专门研究学术期刊这一概念的定义、特征、范畴的文献很少。文章专门就学术期刊的概念、划分,以及学术期刊与非学术期刊、学术图书及核心期刊的关系加以论述,并就学术期刊划分在图书馆期刊工作实践中的应用进行探讨。通过对学术期刊特征、范畴的认识和具体的划分,可应用于期刊实践中促进期刊工作效率,提升工作质量

Ships Tracking Based on Active Contour Model

将主动轮廓线模型用于海面运动船只的跟踪,提出了一种自动选择主动轮廓线初始控制点的方法,增强了主动轮廓线模型的实用性,并将基于主动轮廓线模型的跟踪方法用于多个海面运动目标的跟踪。实验结果表明,提出的初始主动轮廓线自动选取方法可以准确地选择目标的轮廓线的特征点;基于主动轮廓线模型的跟踪方法可以比较准确地跟踪运动船只的主要轮廓特征。This paper proposes a method based on active contour model to track the moving object on the sea surface,and a method for selecting the initial control points of the active contour automatically.And it uses the tracking method to track multi-ships moving on the sea surface.Experimental results show that the tracking method based on active contour model can track the ships’ contour effectively,and the method for selecting the initial points is excellent.国家创新研究群体基金资助项目(60024301);; 国家自然科学基金资助项目(60175008

Tb_3Al_5O_(12)∶Ce~(3+)发光粉的微波辅助合成和性能表征

采用微波辅助合成-高温热处理制备了铈掺杂铽铝石榴石(Tb3Al5O12∶Ce3+,简称TAG∶Ce)发光粉。用XRD、SEM、激发和发射光谱等对粉末的晶型、形貌以及发光性能进行了表征。结果表明,发光粉晶粒清晰、表面光滑,粒径在2μm以下。TAG∶Ce的激发光谱主激发峰在467nm,330nm左右存在次激发峰,375nm附近存在两个强度较弱的峰;发射光谱峰值波长为550nm,与传统固相法制备的TAG∶Ce基本一致。与传统高温固相反应法相比,此方法具有高效、节能、环保等优点。通过分析反应历程,证明了Tb2O3-Al2O3系统中Al离子的分扩散系数大于Tb离子的

PPV对文献采访的影响及因应对策

PPV模式是近年来在国外图书馆兴起的一种新的文献采购模式,相对于传统的\"捆绑采购\",PPV模式有明显的针对性强、节省经费和快速满足用户需求的优势。文章介绍PPV采购的主要模式,分析PPV模式的利弊,从采购方式的变化、经费预算的影响及改变图书馆的工作流程等方面探讨PPV采购模式对传统文献采访的影响,并提出图书馆适应和完善PPV模式的因应对策

Multiple Background Model-Based Moving Target Detection on Sea Surface

提出一种在反射光较强的条件下基于多背景模型的海面运动目标检测方法.使用基于统计模型的变化检测方法将被监控场景区分为海浪波动显著的背景区域和海浪波动不显著的背景区域;对这两种区域中的像素点分别以Weibull分布模型和Gauss分布模型建立背景模型;使用建立的背景模型检测海面的运动目标.实验结果表明,在海面反射光较强且波浪波动较大的情况下,用该方法可以比较准确地检测到海面的运动目标. A new method based on multiple background model for moving target detection on the sea surface is proposed. It can detect the moving target on the sea surface when there is heavy sea clutter and the reflected light is strong. The monitored area is first partitioned into two regions using the statistical model-based change detection method, where the sea clutter in one region is heavier than the other. Then Weibull distribution is used to create the background model for pixels in the region having heavier sea clutter and Gaussian distribution is used for the other region. Finally the background model is used to detect moving target on the sea surface. Experimental results show that the proposed method can detect moving target effectively even when the sea clutter is heavy and the reflected light is strong.国家自然科学基金资助项目(60175008);; 国家创新研究群体项目(60024301

高校阅读推广六策——厦门大学图书馆阅读推广实证研究

本文结合厦门大学图书馆阅读推广活动案例,笔者提出几点阅读推广策略:因势利导,驾轻就熟;需求引导,魅力增值;主题明确,系列组织;借助技术,创新发展;合作共建,群策群力;总结评估,奖励优秀。通过活动案例反思,进一步总结了四条实践经验:建立并完善有效的评价机制;扩大数字资源阅读推广;与常规工作相结合;力求内容和形式上的突破

Synthesis and Biological Activity of Novel Bis-heterocyclic Compounds Containing 1H-Pyrazole and Thiazole

以苯肼、乙酰乙酸乙酯和氨基杂环为原料 ,合成了两类含双杂环的新型吡唑甲酰胺衍生物 ,其结构经元素分析、1HNMR ,MS及IR确证 .初步的生物活性测试结果表明 :部分化合物对水稻纹枯病菌、小麦赤霉病菌和苹果轮纹病菌具有良好的抑制效果 .In order to search for novel fungicides with high activity and low toxicity, a series of bis-heterocyclic compounds containing 1H-pyrazole and thiazole were designed and synthesized from phenyl hydrazine, ethyl acetoacetate and aromatic aminoheterolcycles. The structures of all new compounds were confirmed by elemental analysis, 1H NMR, IR and MS spectra. Preliminary bioassays indicated that some compounds showed fungicidal activity against Pellicularia sasakii, Gibberella zeave and Physalospora piricola.科技部国家“九五”重点科技攻关 (No .97 563 0 2 0 5)资助项

Optical System for Asymmetrical Crossed Czerny-Turner Raman Spectrometer with High Luminous Flux

为克服分立式便携拉曼光谱仪光通量低的缺点,设计了一种集拉曼探头光路与分光系统于一体的光学系统。探头光路采用大数值孔径的非球面透镜实现样品的有效激发和信号的高效收集,通过胶合透镜组缩小会聚光路尺寸、消除轴向色差。分光系统基于交叉非对称Czerny-Turner结构,为获得期望的光谱分辨率和光谱范围,建立了分光系统光谱分辨率及光谱范围与交叉非对称Czerny-Turner结构参数的关系。由测得的汞灯谱图可知,分光系统的光谱分辨率优于6 cm~(-1)(0.37 nm),光谱范围为790~950 nm(200~2000 cm~(-1))。将设计的光学系统对CCL4进行测试,实验结果表明在相同积分时间内由这种整体式的光学系统检测到的CCL4光谱谱峰强度是用商业探头通过光纤连接分光系统检测到的近3倍,验证了光学系统设计的合理性。To overcome the low luminous flux in separated portable Raman spectrometer, an optical system embodies the probe of Raman spectrometer and monochromator is designed. An aspherical lens with high numerical aperture is used to obtain the effective excitation of sample and the efficient collection of signal in the optical system of the probe. A cemented lens group is used to minish the size of converging path and eliminate chromatic aberration.The monochromator is based on asymmetrical crossed Czerny-Turner structure. For the purpose of achieving desired spectrum resolution and spectrum range, the relationship between the spectrum resolution and spectrum range of the monochromator and the structural parameters of the asymmetrical crossed Czerny-Turner system is established. According to the tested spectrogram of mercury lamp, the spectrum resolution of the monochromator is better than 6 cm~(-1)(0.37 nm), and spectrum range is 790~950 nm(200~2000 cm~(-1)). A sample of CCL4 is introduced to examine the performance of the optical system, the experimented results demonstrate that the peak intensity of spectrogram of CCL4 measured by this incorporative optical system is almost three times as high as that using a commercial probe couples to the monochromator, which verifies the rationality of the design of the optical system.国家自然科学基金(21503171);; 中央高校基本科研业务费项目(20720150091、20720150094);; 福建省高端装备制造协同创新中心资