210 research outputs found

    Analysis and Design of An Oline Learning System for A Police Traning School

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    随着我省公安工作信息化的普及,传统公安工作已由纸上逐步转化为网上。按照公安部金盾工程的相关要求,在公安教育上也要实行信息化建设。公安教育是公安民警走出校园进入工作岗位后,进行切实有效的再教育的重要方式。传统公安教育依托书本、卷子,不但民警学习的时间无法自己掌握(通常由所在单位统一制定学习时间),且公安机关要支付大量的经费去购买书籍,印制卷子,费时费力。因此,提高公安教育信息化程度是新时期公安工作的重中之重。 本论文是围绕某警校在线学习系统的分析与设计而展开的。某警校在线学习系统是一个典型的B/S模式的网络教学平台,系统以DreamweaverCS4作为开发工具,运用ASP网页技术,使用Mic...With our province public security work popularization of information technology, the traditional work has been transformed online. According to the Ministry of public security golden Shield Project request, the police information technology education should be implemented. Re-education is an important way to the police training. The traditional police education is based on books and papers, then p...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201323009

    Design and Implementation of Office Automation System for an Enterprise

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    计算机技术的发展使海量信息得以存在并迅猛发展。OA办公自动化系统是指利用网络通讯基础及先进的网络应用平台,建设一个安全、可靠、开放、高效的信息网络和办公自动化、信息管理电子化系统,为管理部门提供现代化的日常办公条件及丰富的综合信息服务,实现办公事务处理自动化,以提高办公效率和管理水平,实现企业各部门日常业务工作的规范化、电子化、标准化。增强档案部门文书档案、人事档案、科技档案、财务档案等档案的可管理性,实现信息的在线查询、借阅,最终实现“无纸化”的办公系统。 本文从软件工程的理论角度,对企业办公自动化系统从研究背景、需求分析、系统设计、系统实现到最后的系统测试进行了详细的论述。在这个过程中,...Nowadays, the development of computer technology leads to the abrupt existence and rapid growth of large information. OA office automation system is the use of network communication foundation and advanced network application platform, Building a secure, reliable, open and efficient information network and office automation, information management electronic system, to provide the management depar...学位:工程管理硕士院系专业:软件学院_工程硕士(软件工程)学号:X201323010

    商业银行金融衍生业务的风险管理

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    国内金融改革的不断深化,资本市场发展迅猛,为商业银行金融衍生业务的发展创造了有利的条件。本文从商业银行的角度分析金融衍生产品的发展现状和面临的风险,提出防范和规避商业银行金融衍生产品业务风险的措施和手段

    Marking the Mycelium of Fusarium oxysporum f. sp. Melon by Using the Enhanced Green Fluorescent Protein Gene

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    尖孢镰刀菌(Fusariumoxysporum)是一种世界性分布的重要的植物病原真菌,寄主范围广泛,可引起100多种植物的维管束萎蔫病害,即植物枯萎病。尖孢镰刀菌甜瓜专化型(F.oxyspurmf.sp.melonis)是甜瓜枯萎病致病真菌。 本研究通过根癌农杆菌介导转化法(AgrobacteriumtumefaciensMediatedTransformation,AtMT),将构巢曲霉(Aspergrillusnidulans)的甘油醛-3-磷酸脱氢酶启动子PgpdA驱动的增强型绿色荧光蛋白基因eGFP成功转入尖孢镰刀菌甜瓜专化型菌株L128。 建立了尖孢镰刀菌甜瓜专化型菌株的AtMT...Fusariumo xysporum causes wilt disease in more than 100 plant species all over the world and is one of the most important plant pathogenic fungi. Fusarium oxysporum f. sp. melon is the pathogen of melon wilt. In our research, we transformed eGFP gene under the promoter of PgpdA from Aspergillus nidulans to the strain L128 of Fusarium oxysporum f. sp. melon by Agrobacterium tumefaciens Mediate...学位:理学硕士院系专业:生命科学学院生物学系_发育生物学学号:2162007115421

    Provement of the Performance Appraisal System of HangZhou Customs in the Vision of Current Economic Situation

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    经济全球化催化了“新公共服务”理论,促使许多政府高举起“政府是服务”的大旗。其中,绩效考评作为一种改进和评价政府绩效的实用性管理工具,己引起各国政府的普遍关注,并逐渐引入到我国政府管理的实践当中。公务员的绩效水平决定了政府的整体绩效,影响着政府的形象,政府管理国家政治、经济和社会事务的有效性也受制于此。公务员绩效考评作为现代政府人力资源管理的核心职能之一也有着重要的意义。而绩效考评于政府部门所具有的政治性、公共性、复杂性等特征,使得政府绩效考评成为管理实践中的难点之一。 随着我国外贸经济的快速发展,各界对海关执法和服务各方面要求越来越高,作为进出境监督管理机关的中国海关面临着履行传统职能和新...Economic globalization created "New Public Service" theory, which has pushed many governments to hold high the banner of "the Government service". In this theory, Performance Appraisal, as a practical management tool to improve and evaluate government’s performance, has caused widespread concern of governments. And it is also gradually introduced into management practice of our government. The per...学位:工商管理硕士院系专业:管理学院工商管理教育中心(MBA中心)_工商管理硕士(MBA)学号:1792006115153

    Research on Establishment of PA Information System in Large State-owned Construction Enterprises ——A Case Study of FCG Company

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    在系统论、集成观的项目管理理念下,以WBS为代表的传统项目管理方法不足以控制工程项目的全过程,国外引进的项目会计受国内建筑市场不规范的影响,运行困难重重,现行从会计角度进行确认、计量、报告的工程项目会计也不能真实反映项目的经营风险和盈利状况,会计的监督职能弱化,项目信息的决策有用性降低。 本文通过对WBS(WorkBreakdownStrutrue,工作分解结构)和工程项目会计的研究,提出大型国有建筑施工企业构建PA(ProjectAccounting)信息系统管控项目的重要性;采取定性和定量分析相结合的方法,对FCG公司的战略目标、工程项目管理的里程碑阶段进行了系统分析;运用SWOT矩阵分...Under the project management concepts of systemism and integrated view, traditional project management method represented by WBS is insufficient to control the whole process of engineering projects. The operation of project accounting introduced from abroad, due to the influence of non-standardization in domestic construction market, is full of difficulties. The current project accounting which co...学位:会计硕士院系专业:厦门大学与厦门国家会计学院会计硕士专业学位联合教育中心(MPACC)_会计硕士(MPACC)学号:X200615706

    鲁迅的“黑暗面”

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    晚年鲁迅曾在遗嘱中承认自己怨敌很多:\"我的怨敌可谓多矣。\"但他并不过于在意。他在《死》中写道\"还记得在发热时,又曾想到欧洲人临死时,往往有一种仪式,请别人宽恕,自己也宽恕了别人。\"\"我想了一想,决定的是:让他们怨恨去,我也一个都不宽恕。\"这里需要注意的是,\"并不过于在意\"不同于不在意。鲁迅先生的\"黑暗面\"从这里露出端倪。任别人怨恨和不宽恕本身就是矛盾的。不免让人对他表面的\"不过于在意\"表示怀疑。遗嘱的前面大部分都和普通遗

    Study of Co-decorated MWCNTs-promoted CuO-ZnO-ZrO2 Catalyst for Methanol Synthesis from CO2 Hydrogenation

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    为了改善气候条件并解决碳资源问题,需要开发能将CO2转化为有价值材料的技术。在所考虑的多种选项中,甲醇因其是重要化工原料并可作为石油补充替代合成燃料,因而通过加氢将CO2转化为甲醇的研究倍受关注。 CO2是最稳定的化合物之一。从CO2加氢制甲醇(CO2+3H2=CH3OH+H2O,G523K=46.5kJ/mol)较之从CO加氢制甲醇(CO+2H2=CH3OH,G523K=26.9kJ/mol)在热力学上不利得多。在工业上要求的反应温度(523K)下CO2加氢的平衡转化率相当低。因此,开发能在高原料气空速条件下操作的高效催化剂(以便实现高的单程甲醇时空产率),...Hydrogenation of carbon dioxide has been considered as one of the most economical and effective ways to chemically fix huge amount of emitted CO2. In order to improve climate conditions, it is desirable to develop methods to convert CO2 into valuable chemicals. Among the options considered, catalytic hydrogenation of CO2 to produce methanol has received much attention. Since carbon dioxide is on...学位:工学硕士院系专业:化学化工学院化学工程与生物工程系_工业催化学号:2062006115205

    Effect of Loading Content of Silver on Lithium Storage for TiO2 Net-Work Flexible Film Electrode

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    采用水热法结合银镜反应制备出一系列不同Ag负载量(2.2%、4.0%、6.4%,; w/w)改性的3D纳米网状结构Ag@TiO_2薄膜电极。利用电感耦合等离子体技术(ICP)、X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(; TEM)和X射线能谱(EDX)等表征手段测试所合成材料的形貌及成分,实验结果表明Ag纳米颗粒可以成功沉积在TiO_2纳米线表面。电化学测试数据则; 表明,4.0%(w/w)负载量的Ag@TiO_2相比于未改性和其他负载量的TiO_2纳米线具有更好的倍率性能和更稳定的可逆容量。在50,100,; 200, 400, 800和1 200 mA·g~(-1)的电流密度条件下,该改性电极的放电容量可分别达到261.4,253.7,239.5,; 216.5, 193.1和185.1 mAh·g~(-1),在200 mA·g~(-1)下循环80次后容量保持率仍能达到99.8%。A series of silver-modified TiO(2)flexible film electrodes with hierarchical 3D nano-network structure are facilely synthesized using hydrothermal method followed via the traditional silver mirror reaction. Successful deposition of Ag nanoparticles on to the TiO2 nanowires surface is confirmed by inductively coupled plasma (ICP) technique, X-ray diffraction (XRD), scanning electron microscope (SEM) with energy-dispersive X-ray analysis (EDX) and transmission electron microscopy (TEM). The electrochemical properties of the Ag@TiO2 nanowires were researched in this work. Our results show that the Ag@TiO2 nanowires with 4.0% (w/w) silver exhibits a better rate performance and more excellent reversibility than pristine one. At different current densities of 50, 100, 200, 400, 800 and 1 200 mA . g(-1), the discharge capacities of the Ag@TiO2 electrodes are 261.4, 253.7, 239.5, 216.5, 193.1 and 185.1 mAh . g(-1), respectively. After 80 cycles at 200 mA . g(-1), its discharge capacity retention is 99.8% indicating Ag@TiO(2)electrodes are potentially useful for LIBs.国家自然科学基金(N0.51604132)资助项目

    Laser welding of superalloy K418 to 42CrMo steel

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    进行了K418高温合金和42CrMo钢的激光焊接实验,分别采用OM、SEM、XRD和EDS等手段分析了焊缝的金相组织和物相组成,评价了焊缝的显微硬度和拉伸强度。结果表明:焊缝主要由树枝状非平衡凝固的FeCrNiC(力固溶体组成,此外,还有少量细小、弥散的Ni_3Al(γ′)相、Laves颗粒和少量MC碳化物分布在树枝晶间区域。由于主要强化相γ′在激光辐照后的部分溶解和随后快速凝固的抑制作用,焊缝的硬度虽分布较均匀但低于母材。由于没有获得穿透的焊接接头,焊接接头的强度约只有母材的88.5%,焊缝的断裂机制是塑性和脆性断裂的混合机制。由于在焊缝中存在一些Laves颗粒,这促进了微裂纹和微孔的形成和扩展,降低了焊接接头的抗拉强度
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