“互联网+”时代高校图书馆创新服务研究

以“互联网+”时代的高校图书馆创新服务为切入点,分析了“互联网+”时代高校图书馆创新服务4个方面的变革,探讨了高校图书馆提供创新服务的两个模式,提出了高校图书馆提供创新服务的途径.     

互联网+高校图书馆生态化建设实证研究

本文提出了互联网+高校图书馆生态化建设的概念框架,通过定量和定性研究,对互联网+高校图书馆生态化建设的需求、服务理念和效果等进行分析并提出了建设性建议。研究发现,互联网+高校图书馆生态化建设已广为接受,需求度高。"以人为本""以互联网为中心""以互联网资源网络推广应用为中心"和"以生态化可持续发展为目标"的互联网+高校图书馆生态化建设服务理念效果显著。但是,互联网+高校图书馆生态化建设的效果有待提高,尤其是"硬件生态化"建设。     

“互联网+”背景下高校图书馆读者服务研究

随着以创新为主旋律的互联网+时代的到来,传统的高校图书馆的读者服务模式已不能适应现阶段发展的需要,这就催生了图书馆服务理念、服务模式、服务内容的革新。本文在分析"互联网+"对高校图书馆的影响基础上提出"互联网+"背景下高校图书馆的服务转型策略。     

互联网+环境下图书馆读者服务的优化与创新

随着"互联网+"的概念提出并被提升为国家级的战略计划后,应用物联网与互联网等信息技术对传统行业进行变革,优化升级已经是大势所趋。高校图书馆作为高校办学条件的三大支柱之一,占具相当重要的组成部分,也借助这股浪潮对自己的读者服务进行相应的优化与创新,互联网思维所体现的以读者为中心和共享的精神也是当下图书馆服务事业所追求的。本文对当前图书馆的读者服务进行了一定的分析,认为在互联网+环境下,图书馆应该不断的创新技术手段,以技术为助力,以资源为支撑,构建人性化、系统化,科学化的图书馆读者服务体系。     

互联网+时代下图书馆馆员素质提升路径的思考

现代图书馆以网络化、数字化、自动化为主要技术特征,服务重心由"文献本位"向"人本位"转移。图书馆活动将进入以用户文献信息需求为调节手段的动态运行机制。其馆藏资源结构、服务内容与形式等都将随着用户需求的变化而变化,最大限度地为用户提供全方位的文献信息服务是其宗旨,因此,图书馆员必须具备比较全面的能力,才能做好服务工作。该文将主要互联网+时代下图书馆馆员素质提升的路径。     

浅析公共图书馆微服务——以长春市图书馆为例

互联网+背景下,国内公共图书馆的宣传推广方式也花样频出,微服务的引入使公共图书馆突破传统的业务思维模式,更加方便快捷地提供多样化、个性化的读者服务。以长春市图书馆现有微服务进行分析,对受到读者热烈响应的品牌活动进行详细介绍,并结合其他平台较为成功的微服务项目,提出公共图书馆微服务创新升级的相关建议,主要分为基础性服务的升级、细化和加强互动、引导读者深度阅读两大方面,希望对服务模式和服务内容的推陈出新,助力全民阅读推广。     

基于互联网思维的图书馆数字阅读服务创新研究

互联网思维对社会各行各业产生了深远影响,图书馆需要引入互联网思维来转型升级,为读者提供更好的数字阅读服务。分析了互联网思维对图书馆数字阅读服务的影响,运用互联网的大数据思维、用户思维、跨界思维、社会化思维对图书馆数字阅读服务创新进行了探讨。     

互联网+背景下高校图书馆+的服务模式新探索

随着"互联网+"的不断兴起,各行各业都开始思考如何在"互联网+"背景下深化改革,创造更大的行业价值,"高校图书馆+"也不例外。在"互联网+"背景下,高校图书馆+的服务模式已渐渐不能满足高校图书馆的自身发展。该文借助于观察法、文献法、分析法,逐步分析了"互联网+"的含义、目前高校图书馆+的服务模式存在的不足以及互联网+背景下高校图书馆+的服务延伸新方向,从而逐步探索出了"互联网+"背景下高校图书馆+的服务模式:(1)全媒体开放式服务;(2)嵌入式学科服务;(3)MOOCS教育服务;(4)O2O社交网络服务。该文旨在通过探索研究,为"互联网"背景下高校图书馆+的服务模式的探索研究提供理论指导意见。     

“互联网+”思维背景下的高校图书馆服务创新

当代社会“互联网+”思维的迅速流行和发展,为高校图书馆服务领域引入了很多新的研究课题。从互联网与图书馆这两个看似毫无关联领域的结合,到互联网+思维背景下图书馆发展思路的提出,高校图书馆服务面临着巨大的发展困境,本文尝试从基于支持学术交流、为校友提供终身学习支持、休闲休憩业务、社交媒介的全方位运用、基于馆藏的展览与服务等多方面来研究探讨高校图书馆的服务创新。     

“互联网+”时代高校图书馆嵌入式学科服务体系构建策略

嵌入式学科服务是高校图书馆学科服务发展的新模式,随着"互联网+"思维融入到高校图书馆信息服务的建设中,对高校嵌入式学科服务的创新发展带来了机遇和挑战。本研究通过文献调查法,分析了国内高校图书馆嵌入式学科服务发展现状及存在的问题。在"互联网+"时代,从图书馆经费投入、学科馆员培养、用户沟通渠道搭建、学科资源优化整合、学科服务平台建设、学科服务管理评价机制制定等方面探讨了高校图书馆嵌入式学科服务体系构建策略,为"互联网+"时代高校图书馆嵌入式学科服务的创新发展献策献计。     

盾构机密封舱渣土非线性本构模型参数识别

根据密封舱改性渣土的三轴压缩实验数据,建立了基于优化方法的Duncan-Chang双曲线本构模型参数反演方法。为了解决参数识别反问题解的不稳定性问题,在Gauss-Newton优化迭代算法的基础上,提出了正则化参数反演方法。实际应用结果表明,所提出的反演方法具有较快的收敛速度和较强的鲁棒性,预测的实验模型变形与实验值吻合较好。     

Electrochemical properties of LiNi<Subscript>0.5</Subscript>Mn<Subscript>1.3</Subscript>Ti<Subscript>0.2</Subscript>O<Subscript>4</Subscript>/Li<Subscript>4</Subscript>Ti<Subscript>5</Subscript>O<Subscript>12</Subscript> cells

Spinel compounds LiNi_0.5Mn_1.3Ti_0.2O₄ (LNMTO) and Li₄Ti₅O₁₂ (LTO) were synthesized by different methods. The particle sizes of LNMTO and LTO are 0.5–2 and 0.5–0.8 μm, respectively. The LNMTO/LTO cell exhibits better electrochemical properties at both a low current rate of 0.2C and a high current rate of 1C. When the specific capacity was determined based on the mass of the LNMTO cathode, the LNMTO/LTO cell delivered 137 mA·h·g⁻¹ at 0.2C and 118.2 mA·h·g⁻¹ at 1C, and the corresponding capacity retentions after 30 cycles are 88.5% and 92.4%, respectively.     

Preparation of Al<Subscript>72</Subscript>Ni<Subscript>8</Subscript>Ti<Subscript>8</Subscript>Zr<Subscript>6</Subscript>Nb<Subscript>3</Subscript>Y<Subscript>3</Subscript> amorphous powders and bulk materials

Amorphous Al₇₂Ni₈Ti₈Zr₆Nb₃Y₃ powders were successfully fabricated by mechanical alloying. The microstructure, glass-forming ability, and crystallization behavior of amorphous Al₇₂Ni₈Ti₈Zr₆Nb₃Y₃ powders were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), and differential scanning calorimetry (DSC). The isothermal crystallization kinetics was analyzed by the Johnson–Mehl–Avrami equation. In the results, the supercooled liquid region of the amorphous alloy is as high as 81 K, as determined by non-isothermal DSC curves. The activation energy for crystallization is as high as 312.6 kJ·mol?1 obtained by Kissinger and Ozawa analyses. The values of Avrami exponent (n) imply that the crystallization is dominated by interface-controlled three-dimensional growth in the early stage and the end stage and by diffusion-controlled two- or three-dimensional growth in the middle stage. In addition, the amorphous Al₇₂Ni₈Ti₈Zr₆Nb₃Y₃ powders were sintered under 2 GPa at temperatures of 673 K and 723 K. The results show that the Vickers hardness of the compacted powders is as high as Hv 1215.     

Kinetic parameters of oscillating reaction of amino acid- BrO3^——Mn^2＋-H2SO4-acetone system

In the previous papers[1—3], the oscillating reactionusing amino acids as organic substrates was studied. Inorder to obtain information about the kinetic parameters ofoscillating reaction of amino acids in amino acid- BrO3 - ?Mn2 -H2SO4-acetone sy…     

Acid etching process for fabrication of Bi2Sr2CaCu2O8＋x stack

We adopted a new method, acid etching process, to fabricate the intrinsic Josephson junctions based on the Bi2Sr2CaCu2O8 x single crystals. By soaking the crystals into the dilute hydrochloric acid, we fabricated a junction stack successfully, and meantime made the surrounding area insulated. A certain concentration of hydrochloric acid was used to maintain the roughness of the modified layer. The cur-rent-voltage characteristic was achieved through the four terminal measurement. We could control the junctions' number by changing the concentration and the soaking time. We also found that the thick-ness of the stack was equal to the average height of the insulation layer. Such a simple, convenient and controllable fabrication method with a high yield might widen the applications of the intrinsic Joseph-son junctions.     

Rolling-induced microstructure change in Zr_（65）Al_（7.5）Ni_（10）Cu_（12.5）Ag_5 bulk metallic glass

The microstructures and free-volume evolutions of as-cast and pre-annealed Zr65Al7.5Ni10Cu12.5Ag5 bulk metallic glasses during rolling deformation have been investigated. No phase transformation is detected in the as-cast/rolled specimen. However,the structural stability of the glass against plastic deformation is worse after pre-annealing,indicated by nanocrystallization in preannealed/rolled specimens with large deformation degrees. Moreover,with increasing deformation degree,the free-volume content in a pre-annealed/rolled specimen increases at a lower average rate than that in an as-cast/rolled specimen.     

基于遗传算法的带附加气室空气悬架多目标优化

以带附加气室的空气弹簧悬架为研究对象,按照物理模型建立带附加气室空气弹簧的数学模型,考虑到空气弹簧刚度的非线性,将该模型以空气弹簧非线性力的形式直接引入到1/4车辆模型。以提高车辆平顺性、行驶安全性及操纵稳定性的综合性能为目标,以附加气室容积为优化变量,设计带附加气室空气悬架的多目标优化模型;考虑到悬架性能各指标量在量纲与量级上的差异,对各指标量进行统一化处理,并采用线性加权和法将多目标函数转化为单目标评价函数。在MAT-LAB/Simulink中搭建系统仿真模型,采用遗传优化算法对典型工况下的最优附加气室容积进行寻优。优化结果表明,优化附加气室容积能有效提高悬架的综合性能,降低车身加速度、悬架动行程,但轮胎动载荷有所增加。     

Synthesis, Characterization and Calorimetry of Ni（C4H8N2O3）2Cl2

A coordination complex was synthesized from NiCl2 and dipeptide glycylglycine（GG）. It was characterized by element analysis, NMR and TG methods, and then was determined to be Ni（C4HsN2O3）2Cl2. Using an isoperibolic reaction calorimeter, the standard molar enthalpy of formation of Ni（GG）2Cl2（solid） has been determined to be -（1 674.66±2.02） kJ · mol^-1 at 298.15 K.     

Work toughening effect in Zr_（41）Ti_（14）Cu_（12.5）Ni_（10）Be_（22.5） bulk metallic glass

Work hardening is a well-known phenomenon occurring in crystalline metals during deformation,which has been widely used to increase the strength of metals although their ductility is usually reduced simultaneously. Here we report that the plastic strain of Zr41Ti14Cu12.5Ni10Be22.5 (at.%) bulk metallic glasses has been increased from 0.3% for the as-cast sample to 2.5%-8.0% for samples that have experienced pre-deformation under constrained conditions. The pre-deformed glassy alloys possess more free volume and abundant introduced shear bands,which are believed to promote the activation of shear bands in post-deformation and result in an increase in plasticity. The orientation of the pre-introduced shear bands relative to the loading direction will affect the deformation behavior of pre-deformed samples. The present results show that pre-deformation of this glassy alloy will result in work toughening. This work toughening effect can be removed by isothermal annealing at a sub-Tg (glass transition) temperature,which causes annihilation of free volume and healing of shear bands.     

Mutagenesis of Ser24 of Cytochrome b559 α Subunit Affects PSII Acitivies in Chlamydomonas reinhardtii

In order to study the functions of cytochrome b559 (Cyt b559) in photosystem two (PSII) activity, mutant S24F of Chlamydomonas reinhardtii was constructed using site directed mutagenesis, in which Serine24 (Ser24) locating downstream of Histidine23 (His23) in α subunit of Cyt b559 was replaced by Phenylalanine (Phe). Physiological and biochemical analysis showed that mutant S24F could be grown photoautotrophically or photoheterotrophically. However, their growth rate was slower either on HSM or TAP medium than that of the control; Analysis of PSII activity revealed that its oxygen evolution was about 71% of wild type (WT); The Photochemical efficiency of PSII (Fv/Fm) of S24F was reduced 0.23 compared with WT; S24F was more sensitive to strong light irradiance than the wild type; Furthermore, SDS-PAGE and Western-blotting analysis indicated that the expression levels of α subunit of Cyt b559, LHCII and PsbO of S24F were a little less than those of the wild type. Overall, these data suggests that Ser24 plays a significant role in making Cyt b559 structure maintain PSII complex activity of oxygen evolution although it is not directly bound to heme group.