基于LINQ的多XML文档管理与设计

为了实现对多XML文档管理与操作,本文首先研究多XML文档建立方式和特点,并运用高效便捷的LINQ语言中联合查询语法实现同时对多个XML文档联合操作。该方法能够保证多个XML文档数据的一致性和完整性,便于多个XML文档数据的维护与管理。     

Government support for SME innovations in the regional industries: The case of government financial support program in South Korea

This study explores the impact of governmental support policies on the innovation of SMEs in the regional strategic industries in South Korea. We use the technological development assistance funds as a proxy for governmental support policies for SMEs in the regional industries in Korea. The innovation of SMEs is measured by technological innovation: patent, utility model, trademark, and new design registrations. Before empirically testing the impact of governmental support policies on the innovation of SMEs, this study reviews the literature concerning the innovation and the governmental support policies of SMEs in regional industries. Results from empirical models, which simultaneously control for factors which were thought to affect the innovation of regional SMEs, indicate that a positive relationship exists among the technological development assistance by the Korean government and patent acquisitions and new design registrations of regional SMEs. Networks with universities also have a positive relationship with patent acquisitions and new design registrations of regional SMEs. This study suggests there is an importance to governmental financial aids for regional SME innovations, and there is an importance to the need to build a strong social relationship in today's networked economy.     

SNS中品牌帖子的信息特征对消费者口碑传播行为的影响

以SNS中企业与消费者互动情境下产生的外生口碑为研究对象,将口碑传播视作信息处理的结果和细分口碑传播的行为维度,探究信息特征对口碑发布行为和再传播行为的不同影响。对调研数据进行回归分析发现:趣味性对两者均有促进作用,临场感仅对口碑发布行为有促进作用,但信息性对二者均起抑制作用;不管对应的产品卷入度如何,临场感的影响效果无显著差异,但信息性对评论的抑制作用随卷入度的增强而增强。     

电子政务网络影响力评估与提升策略研究——以广东省21个市政府为例

文章利用层次分析法和链接分析法确定了电子政务网络影响力的评估体系,提出如何合理利用商业搜索引擎搜集数据,并对广东省21个市级政府的网络影响力进行了测评,结合评估结果提出提升电子政务网络影响力的策略方法。     

Dual-mode on-demand droplet routing in multiple microchannels using a magnetic fluid as carrier phase

We present dual-mode, on-demand droplet routing in a multiple-outlet microfluidic device using an oil-based magnetic fluid. Magnetite (Fe₃O₄) nanoparticle-contained oleic acid (MNOA) was used as a carrier phase for droplet generation and manipulation. The water-in-MNOA droplets were selectively distributed in a curved microchannel with three branches by utilizing both a hydrodynamic laminar flow pattern and an external magnetic field. Without the applied magnetic field, the droplets travelled along a hydrodynamic centerline that was displaced at each bifurcating junction. However, in the presence of a permanent magnet, they were repelled from the centerline and diverted into the desired channel when the repelled distance exceeded the minimum offset allocated to the channel. The repelled distance, which is proportional to the magnetic field gradient, was manipulated by controlling the magnet''s distance from the device. To evaluate routing performance, three different sizes of droplets with diameters of 63, 88, and 102 μm were directed into designated outlets with the magnet positioned at varying distances. The result demonstrated that the 102-μm droplets were sorted with an accuracy of ∼93%. Our technique enables on-demand droplet routing in multiple outlet channels by simply manipulating magnet positions (active mode) as well as size-based droplet separation with a fixed magnet position (passive mode).     

Programmed sample delivery on a pressurized paper

This paper reports a method to control the fluid flow in paper-based microfluidic devices simply by pressing over the channel surface of paper, thereby decreasing the pore size and permeability of a non-woven polypropylene sheet. As a result, fluid resistance is increased in the pressed region and causes flow rate to decrease. We characterize the decrease of flow rate with respect to different amounts of pressure applied, and up to 740% decrease in flow velocity was achieved. In addition, we demonstrate flow rate control in a Y-shaped merging paper and sequential delivery of multiple color dyes in a three-branched paper. Furthermore, sequential delivery of multiple fluid samples is performed to demonstrate its application in multi-step colorimetric immunoassay, which shows a 4.3-fold signal increase via enhancement step.     

Optofluidic microvalve-on-a-chip with a surface plasmon-enhanced fiber optic microheater

We present an optofluidic microvalve utilizing an embedded, surface plasmon-enhanced fiber optic microheater. The fiber optic microheater is formed by depositing a titanium thin film on the roughened end-face of a silica optical fiber that serves as a waveguide to deliver laser light to the titanium film. The nanoscale roughness at the titanium-silica interface enables strong light absorption enhancement in the titanium film through excitation of localized surface plasmons as well as facilitates bubble nucleation. Our experimental results show that due to the unique design of the fiber optic heater, the threshold laser power required to generate a bubble is greatly reduced and the bubble growth rate is significantly increased. By using the microvalve, stable vapor bubble generation in the microchannel is demonstrated, which does not require complex optical focusing and alignment. The generated vapor bubble is shown to successfully block a liquid flow channel with a size of 125 μm × 125 μm and a flow rate of ∼10 μl/min at ∼120 mW laser power.     

八段锦初级练习中的呼吸方式探羹

目的：提出初练八段锦时宜采用的呼吸方式,为习练者提供借鉴和参考。方法：通过科学分析法和文献检索法分析呼吸运动的基本方式和八段锦练习时的呼吸特点。结果：初练者较易做到“调身”,即动作达标,但要做到“调息”,即在动作中加入适宜的呼吸,却并不容易掌握。结论：八段锦练习时,初练者应根据自身情况,采取舒服自然、合理适当的呼吸方式,待动作熟练后再有意识地进行呼吸方式的锻炼,最后达到“不调而自调”的状态。     

NCAA财政收支的结构与运行模式研究

通过文献分析法和数理统计法,分析了美国NCAA财政收入和支出的结构和运行模式。研究显示,NCAA最大的收入来源是电视转播,创收和政府学校的拨款是成员高校的两大收入来源。NCAA将大部分财政收入返还给第一级别联赛,重视在学生运动员学业和福利方面的投资。得出了对我国大学竞技体育的启示:推动大学竞技体育的筹融资,增加财政收入;科学合理的进行财政支出,推动大学竞技体育的健康发展。