Design and Realization of the Individual Income Tax Declaration System Based on J2EE

计算机技术的迅猛发展，网络技术已经普遍运用于社会生活的各个领域。税收征收管理进入了电子办公的时代。个人所得税网上申报将从根本上改变目前的征管模式。提供网上申报是一条高效的申报方式。 随着计算机网络和浏览器技术的发展与普及，通过使用浏览器进行网络申报，给纳税人提供一条方便、快捷的申报途径，并提供网上办税服务，这是提高纳税服务质量，降低征收纳税成本和减轻税务人员工作量的好办法。纳税人通过网络可以随时随地地进行自行网上申报和缴纳税款，这是实现“科技管税”和“服务促税”的体现。 本文在分析了个人所得税网上申报系统功能需求的基础上，设计并实现了个人所得税网上申报系统。通过用例和逻辑等视图分析系统的设...With the rapid development of computer technology,network technology has been widely used in various fields of social life. Tax collection and management has been in an age of electronic office. The online declaration of personal income tax will fundamentally change the current collection mode. Providing online declaration is an efficient way. With the development and popularization of computer n...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201123110

金融安全、流动性与中国外汇储备风险管理——基于交易价差估计的主权债市场流动性及其风险分析

本文基于主权债交易价差估计指标对债券市场流动性进行直接测度,并结合时变COPULA理论对市场之间的流动性风险相依性进行实证检验。研究结果表明,世界主要主权债市场流动性发生明显变化,流动性变差;流动性风险随流动性的降低而加大,但各个市场的流动性风险表现出相对独立特性;各市场之间的流动性风险相依关系保持相对稳定性,且呈现周期性变化。国家自然科学基金项目“动态优化视角下的中国外汇储备全面风险管理研究”(71473280);;教育部哲学社会科学重大课题攻关项目“我国外汇储备的科学管理及运用战略问题研究”(12JZD027);;中央高校基本科研业务专项资助项目(2012016053

LncRNA Xist通过调控SDF-1/CXCR4轴促进大鼠骨髓间充质干细胞增殖与迁移

【目的】探讨lncRNA Xist在大鼠骨髓间充质干细胞（BMSC）增殖和迁移中的作用及其可能机制。【方法】取3周龄的雌性SD大鼠的股骨和胫骨，分离BMSC细胞，体外培养并鉴定。设计并筛选对lncRNA Xist沉默效率高的siRNA；利用Lipo2000分别将si-Xist和si-NC转染入实验组（si-Xist组）和对照组（si-NC组）BMSC中。CCK-8实验检测各组BMSC增殖能力。划痕及Transwell迁移实验检测各组BMSC横向和纵向迁移能力。qPCR验证lncRNA Xist的沉默效率及检测各组BMSC中SDF-1和CXCR4mRNA水平的相对表达量；western blot检测各组BMSC中CXCR4蛋白水平的相对表达量。【结果】BMSC第3代细胞呈梭状、漩涡状生长，流式细胞术示CD11b（-）、CD34（-）、CD45（-）、CD44（+）、CD90（+）、CD105（+）。使用siRNA干扰BMSC中lncRNA Xist的表达，三条siRNA沉默效率分别为67.92%、68.72%、98.32%。CCK-8实验证明，12h时两组间OD450差异无统计学意义（P>0.05），而在24h和48h时，si-Xist组OD450均低于si-NC组（P0.05）；Western blot实验证实，在蛋白水平，si-Xist组CXCR4相对表达量低于si-NC组（P<0.05）。【结论】LncRNA Xist通过调控CXCR4的表达，提高大鼠BMSC的增殖、迁移能力

Temperature Control of Double-Walled Thermostatic Container with Self-Tuning Control

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Green Emission from a Strain-Modulated InGaN Active Layer

Strain-induced quantum dots (QDs) like island formations are demonstrated to effectively suppress pits/dislocation generation in high indium content (26.8%) InGaN active layers. In addition to the strain redistribution in the QD-like islands, strain modulation on the InGaN active layers by using the GaN island capping is employed to form an increased surface potential barrier around the dislocation cores, which inhibits the carrier transport to the surrounding dislocations. Cathodoluminescence shows distinct double-peak emissions at 503 nm and 444 nm, corresponding to the In-rich QD-like emission and the normal quantum well emission, respectively. The QD-like emission becomes dominated in photoluminescence due to the carrier localization effect of In-rich InGaN QDs at relatively low "carrier injection current". Accordingly, green emission may be enhanced by the following origins: (1) reduction in pits/dislocations density, (2) carrier localization and strain reduction in QDs, (3) strain modulation by GaN island capping, (4) enhanced light extraction with faceted GaN islands on the surface.National Natural Science Foundation of China [60876008, 61076091]; Program for New Century Excellent Talents in Fujian Province Universit

ウダガワコウサイ ノ ポトカラヒイ ニ ツイテ ： コモンジョ ノ カイドク ト ランパク シッパン ノ シャシン トクセイ

Kohsai Udagawa (1821-1887) was one of scientists in Japan. He lived from the last days of the Tokugawa shogunate to the early days of the Meiji era. Present paper is about interpretation of his manuscript concerning Niepceotype albumen wet plate photography, named "Potokarahii" and the results of experiment on the process. It was supposed that the old document was a translation from a Dutch technical book. It contains preparation and image formation on a silver iodide-albumen photosensitive layer on a glass plate. It consists of following items ; introduction, cleaning of glass plate, preparation and coating of iodide-albumen solution, sensitization, light exposure, development, fixing, washing and drying. Interpretation was a little difficult, because the manuscript was composed of classical Chinese characters. "hentai-kana", classical Japanese character, and old Dutch technical terms and units. Sentitometric exposure of plates was operated in the way of time scale, because a light wedge could not be contact with the wet surface of plates.ISO photographic speed calculated from the results of 5500 K sensitometry was equivalent to 4 × 10^, although effective speed was about ten times faster in taking picture as is mentioned in the later part of the abstract. Development time was shortened by treatment with saturated gallic acid solution before light exposure. Solarization of image appeared in the higher exposure region without the treatment. In addition to them, it was desired to add silver nitrate solution into a gallic acid developer to obtain a negative image having proper density on the plate. Spectral response was observed in the region of 330 nm-500 nm with maximum sensitivity at 400 nm. Effective speed of the plate was 4 × 10^ in taking picture, owing to the sensitivity to ultra violet and blue rays. It took 10-15 minites at F numbers of 8-11 to take portrait or still life in the open air. Some consideration was made for the reason why "Potokarahii" was not published in those days

Direct Numerical Simulation Research for Supersonic Shock Wave/Turbulent Boundary Layer Interactions

激波/边界层干扰问题是可压缩湍流领域中一个基本的流动现象，具有十分重要的工程应用背景。干扰区内的流动非常复杂，其中包括边界层大尺度的分离与再附过程、激波低频振荡现象、大尺度涡结构的生成以及强压力脉动载荷等。本文采用直接数值模拟对来流马赫数Ma = 2.25，33.2&deg; 激波角的入射激波/平板湍流边界层干扰流动的分离特性、再附边界层结构以及摩擦阻力的生成演化机制进行了研究。此外，还对来流马赫数Ma = 2.9，24&deg; 偏转角的压缩-膨胀折角构型中的复杂流动进行了直接数值模拟，探讨了膨胀角高度变化对离心不稳定性以及干扰区的非定常运动特性的影响规律，还对壁面压力脉动场的空间分布结构进行了分析。主要的工作和研究成果如下： (1) 入射激波与平板湍流边界层干扰流动的分离泡结构具有三维空间分布特征，整体上呈现扁平的单峰造型。通过定量对比三个不同展向站位的分析结果，研究了展向三维结构对分离区非定常运动特性以及瞬态分离微团的几何形态的影响规律。研究发现，分离泡的非定常特性表征为低频的、大尺度的膨胀和收缩运动。壁面压力脉动的功率谱密度结果表明，展向三维结构对非定常运动的特征频率影响较小。通过经验模态分解方法对分离泡面积脉动信号进行了低频重构，从中提取出了膨胀和收缩过程，借此条件统计分析分离泡呼吸运动对瞬态分离微团几何形状的影响。此外，应用本征正交模态分解对流向速度场进行了低阶近似，分析发现分离泡呼吸运动与低阶模态密切相关，前十个低阶模态重构出的流场能够精确复现分离泡低频的、大尺度呼吸运动。再附边界层内湍流运动的统计特性研究发现，边界层外层的相干结构强度明显增加、具有较大的空间尺度。壁面剪切应力脉动与流向速度脉动的时-空相关性分析表明，涡结构倾角在再附边界层的恢复过程中逐渐减小。通过空间两点的振幅调制相关性，对边界层内、外层结构间的尺度干扰效应进行了分析，提出了一种可能的机制来解释激波干扰区下游的强调制作用。 (2) 考虑激波入射角分别为33.2&deg;&nbsp;和28&deg;&nbsp;的两种情况，对比研究激波干扰强度对壁面摩擦阻力生成、演化特性的影响规律。研究发现，摩擦阻力在流动产生分离时的恢复速率较为缓慢；而边界层在保持附着的情况下，在一个边界层厚度的流向范围内快速恢复到来流充分发展湍流边界层的水平。本研究将最新提出的平均摩擦阻力分解方法应用在激波干扰区内，定量地考察摩擦阻力在不同激波入射角情况下的演化规律。研究发现，与充分发展湍流边界层不同，再附边界层内湍流相关项的贡献显著增强，而压力梯度引起的空间发展项在很大程度上抑制了摩擦阻力的产生。此外，通过二维经验模态分解技术对湍流脉动实现尺度分解，定量评估不同展向空间尺度的湍流运动对摩擦阻力生成的贡献。结果表明，在分离区和再附区来自外层大尺度结构的贡献占主导地位，而内层小尺度结构的贡献相当有限。然而在弱干扰的情况下，外层大尺度结构的贡献显著减少，导致外层大尺度和内层小尺度运动的贡献相当。 (3) 对压缩-膨胀折角干扰构型中的激波/湍流边界层干扰问题进行了直接数值模拟研究。考虑了膨胀角高度为 / = 4.25, 1.22 两种情况。当膨胀角高度较高时，流动规律与传统的压缩折角构型一致；而对于高度较低的情况，激波干扰区受下游膨胀角的存在影响较大，分离区的长度显著减小。壁面压力脉动的功率谱密度结果表明，干扰区非定常运动的低频成分被抑制。极限流线确认了G&ouml;rtler涡在再附区附近存在。通过对边界层内流线的曲率半径和G&ouml;rtler 数分布分析发现，离心不稳定性在压缩角附近区域得到保留，但在膨胀角附近区域消失。膨胀折角下游的流动结构相对复杂，可以观察到附加的激波串结构和新的流向涡生成。此外，本研究还在膨胀角上、下游流动之间发现了信号之间的负反馈机制。</p