多核并行计算技术在风险监测系统中的应用

风险监测系统需要对核电站风险水平进行实时分析计算,对计算速度的要求较高,并且核电站相关人员制定的维修计划中存在多个状态,传统的计算方法是在普通计算机上串行执行所有的计算任务,没有充分利用多核的计算资源.本文提出了一种基于多核技术的并行计算方法,对多核并行计算技术在概率安全评价领域的应用进行了初步探讨.实验结果表明,原本...     

核电站风险监测系统数据库的设计和实现

风险监测系统是一种能辅助和优化核电站运行和维修决策的实时风险在线分析工具.数据库作为风险监测系统的重要部分,是分析计算工作的基础,而且其涉及数据量大、数据关系复杂、使用对象广泛,因此其设计和实现是风险监测系统的关键环节之一.本文采用了面向对象关系设计模式进行了数据库设计,并介绍了在数据库实现中面临的一系列问题和为解决这...     

HIAPER Pole-to-Pole Observations (HIPPO): fine-grained, global-scale measurements of climatically important atmospheric gases and aerosols

The HIAPER Pole-to-Pole Observations (HIPPO) programme has completed three of five planned aircraft transects spanning the Pacific from 85 °?N to 67 °?S, with vertical profiles every approximately 2.2 ° of latitude. Measurements include greenhouse gases, long-lived tracers, reactive species, O(2)/N(2) ratio, black carbon (BC), aerosols and CO(2) isotopes. Our goals are to address the problem of determining surface emissions, transport strength and patterns, and removal rates of atmospheric trace gases and aerosols at global scales and to provide strong tests of satellite data and global models. HIPPO data show dense pollution and BC at high altitudes over the Arctic, imprints of large N(2)O sources from tropical lands and convective storms, sources of pollution and biogenic CH(4) in the Arctic, and summertime uptake of CO(2) and sources for O(2) at high southern latitudes. Global chemical signatures of atmospheric transport are imaged, showing remarkably sharp horizontal gradients at air mass boundaries, weak vertical gradients and inverted profiles (maxima aloft) in both hemispheres. These features challenge satellite algorithms, global models and inversion analyses to derive surface fluxes. HIPPO data can play a crucial role in identifying and resolving questions of global sources, sinks and transport of atmospheric gases and aerosols.     

休宁双龙小学

双龙小学位于安徽黄山市休宁县双龙村,率水河与颜公河的交汇处,紧邻河岸.背靠30余米高的坞头山,村落西侧建有小学专用步行道,道路的北侧与小学主入口连接,南侧则直接与村口的小桥连接,主入口为学生上学的主要入口.沿河水岸未来将修建步道,同时供村民使用.小学东侧入口与南北向的村落主巷相连,巷道两旁的建筑多为2～3层,街道尺度宜人.村落的人流、车流交通汇聚于此,小学东侧入口成为学校与村落联系的通道.     

Outbreak of Escherichia coli 0157:H7 infections associated with consumption of beef donair

The Calgary Health Region identified an outbreak of Escherichia coli 0157:H7 infection in September 2004 following a fourfold increase in laboratory reports. Clinical isolates were indistinguishable by pulsed-field gel electrophoresis (PFGE), and the PFGE pattern was unique in North America. Most affected individuals reported beef donair consumption in 10-day food histories. We conducted a matched case-control study, inspected the implicated food premises, and conducted a traceback investigation of suspect ground beef to determine the source of the outbreak and implement prevention and control measures. A total of 43 laboratory-confirmed cases were identified, with symptom onsets between 8 September and 1 October 2004. Among 26 matched case-control pairs, consumption of beef donair from one of two locations of a local restaurant chain was the only statistically significant risk factor for infection (matched odds ratio undefined; P < 0.01). No samples of the implicated ground beef were available for microbiological testing. We identified several opportunities for time-temperature abuse and other factors that may have contributed to the serving of unsafe donair meat at the implicated restaurants. This outbreak highlighted gaps in food safety policy related to beef donair and similar products in Canada. Immediately following the outbreak, the Region implemented new safe food handling requirements and a Federal/Provincial/Territorial Working Group was established to make recommendations for national food safety policies specific to these products.     

高职院校师资队伍建设中面临的突出问题及对策

高等职业技术教育作为高等教育的重要组成部分,承担着培养生产一线从事生产技术、经营管理、高技术应用、高技术设备运作等应用性人才的重要任务。而高等职业技术教育的发展水平在很大程度上取决于教师队伍的整体素质。面对经济全球化、教育终身化、中国加入WTO、高等职业技术教育发展迅猛的形势,我们结合我校师资队伍的现状及存在的主要问题,提出加快高职院校师资队伍建设的主要对策,并对加强我校师资队伍建设进行战略思考。     

关于黄河黑山峡河段开发方式的争议和意见

地域、社会经济和自然资源的划分配置，使甘、宁两省(区)分别拥有小观音和大柳树低坝水电站，可各自承担水库淹没和搬迁，资源和淹没互相补偿，地质和坝高相互适应，各有利弊，各得其所。黑山峡水库建在龙(羊峡)库之前与建在龙库之后，其水库的作用有明显的差异。从龙、刘(家峡)两库联合运用18a的实际情况可以看出，刘库实质上已起到了黑库承上启下的反调节作用，目前不存在水资源配置难以满足要求的问题。目前甘、宁省(区)都需要发展电力，如由两省(区)对各自拥有的河段自主开发利用，效益将十分显著。     

发展探矿权采矿权市场的基本经验、主要问题与建议

通过全国范围各省(区、市)探矿权、采矿权市场建设情况调研，总结了“两权”市场建设的基本经验，分析了存在的主要问题，提出了进一步培育和规范“两权”市场建设的建议。     

精品酒店专题研究成果报告

总述(夏彦茗,俞挺编写)1.概念简述精品酒店的概念主要是区别于传统大型连锁酒店的,强调个性化、舒适化的服务模式,突出独特的生活文化体验方式并以设计为特色的小型酒店。这类酒店不着重于传统的商务旅行客,而更关注那些强调生活体验和舒适度的个人旅行者。自20世纪80年代提出这一概念以来,这种以主题化、风格化为特     

智慧广电建设升级方案总体架构研究

本文对智慧广电建设升级方案的总体架构进行研究,介绍了项目组研究细化的智慧广电主要特征,并概要阐述了研究提出的智慧内容生产、智慧内容传播、智慧安全保障、智慧监测监管、智慧服务供给、智慧生态和智慧引擎等七大领域的智慧广电总体架构.