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Mou Yue Wang Lidi 《中国标准化(英文版)》2007,(3)
The public information signs( The term public information signs will be abbreviated to public signs in the following text.)in the urban areas not only offer convenience for people to move around, but also reflect the level of development and progress of those areas. It is essential to the creative development and uplifting of the New Costal Area (thereafter, NCA) to have a good understanding of its present situation with regard to its public signs, to discuss the related issues in the development, to work out a system that is up to international standard and develop its own standards in the course of implementing the national strategies on standardizing public signs. 相似文献
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Through experiments, this paper investigates the compatibility of information types with the diagnostic strategy in information aid. Compatibility with operator strategies is an important requirement for information aiding systems in nuclear power plants (NPPs). This paper used three typical types of information aids for MCR operators to investigate the effect of the aids on diagnostic strategies: “alarm (A),” “hypothesis on faults (H),” and “hypothesis on faults and expected symptoms (HS).” The experimental results indicate that the effectiveness of information aid types can vary, dependent on the strategies subjects employ. The results also show that the HS aid improved the diagnosis performance in the hypothesis-and-test strategy. 相似文献
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利用13C标记的多溴联苯醚标准作内标对厦门沿岸海域和筼筜湖沉积物进行色谱—质谱联机测定并采用同位素稀释法进行数据收集和计算,分别测定PBDE3、15、28、47、60、85、99、100、138、153、154和183共12个同类化合物,其回收率范围为75.8-100.5%,最低检测限0.02ng/g(d),沉积物中总PBDE最高值为厦门第一码头2.06ng/g(d),最低是厦门大学海水浴场为0.10ng/g(d)。 相似文献
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利用^13C标记的多溴联苯醚标准作内标对厦门沿岸海域和筼筜湖沉积物进行色谱-质谱联机测定并采用同位索稀释法进行数据收集和计算,分别测定PBDE3、15、28、47、60、85、99、100、138、153、154和183共12个同类化合物,其回收率范围为75.8—100.5%,最低检测限0.02ng/g(d),沉积物中总PBDE最高值为厦门第一码头2.06ng/g(d),最低是厦门大学海水浴场为0.10ng/g(d)。 相似文献
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本文主要对重力供液系统中蒸发器出口制冷剂的过热度进行分析,通过visual basic软件仿真计算出全部用气化潜热制冷需要的蒸发器面积A1,和有过热度后多出来的面积A2。将A1+A2与蒸发器现有面积进行对比,发现A1+A2比蒸发器现有面积小,说明现有蒸发器的面积比实际需要的面积要大,因此我们可以减小蒸发器的面积来达到优化蒸发器的目的。 相似文献
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金属矿床遥感影像特征与地学信息的相关性是矿床遥感地质方法研究矿化集中域矿床展布规律、开展成矿预测的基础。遥感图像中特定的、具一定地质意义的影像线-环结构,标志一定成矿地质构造单元的影像单元(赋矿影像-地质单元),与成矿有关的地质-构造-岩浆-矿化系统相对应的影像线-环构造系(赋矿影像线-环体制),构成赋矿遥感影像网络结构,具有影像特征和地质特征的双重性。影像网络结构的群集性、节律性、贯穿性、对应性;影像网络结构的综合性信息标志功能,可提供矿化集中域成矿地质环境、成矿地质条件、矿床时空展布信息,作为矿床定位预测的重要信息标志。 相似文献
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针对兰州某地区地铁站冷负荷的计算进行研究,这对降低地铁站环控设备容量和减少运行成本有较大意义.与国内相同规模地铁车站的冷负荷相比较,模拟所得结果(最不利工况下)均在合理区间——公共区负荷549.20kW(参考值:420~570kW);设备区负荷545.19kW(参考值:404kW~581kW),表明计算方法、参数设定合... 相似文献
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The present study is about the effect of temporal uncertainty on the control of a dynamic task. Two types of temporal uncertainty are defined: Data Uncertainty (DU), the variability in temporal information, and Knowledge Uncertainty (KU), the complexity in the temporal structure of a situation. The effect of temporal data uncertainty on the control of a dynamic task with high knowledge temporal uncertainty is tested experimentally. Fifty-seven participants practiced the computerized game ‘Save the Whale’, with three levels of data uncertainty about the moment of occurrence of critical events, DU0, DU1 and DU2. Results show that performance is better in the DU0 than in the other two conditions, which do not differ from each other. The performance improves with practice at the same rate, regardless of the level of uncertainty. It is also shown that the control strategies reported by the participants become more variable with an increase in uncertainty. It is concluded that temporal data uncertainty does not limit temporal pattern learning. 相似文献
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本文通过采用k-ε双方程紊流模型对某城市下沉式冷却塔运行时的压力场、速度场和温度场进行模拟,对下沉式冷却塔运行时对周边环境的影响进行了定量分析和评价,对同类型工程具有借鉴意义。 相似文献
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目前,网络入侵技术越来越先进,许多黑客都具备反检测的能力,他们会有针对性地模仿被入侵系统的正常用户行为;或将自己的入侵时间拉长,使敏感操作分布于很长的时间周期中;还可能通过多台主机联手攻破被入侵系统.对于伪装性入侵行为与正常用户行为来说,仅靠一个传感器的报告提供的信息来识别已经相当困难,必须通过多传感器信息融合的方法来提高对入侵的识别率,降低误警率.应用基于神经网络的主观Bayes方法,经实验,效果良好. 相似文献
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The activities in the year 2001 of some 46 intellectual property offices and organizations worldwide in the field of patent, trademark and industrial design information are summarized, based on the Annual Technical Reports (ATRs) provided by those offices and organizations. The summary for each country commences with filing statistics, followed by the most relevant, new features of their information activities. Both the filing and information activities vary enormously.The author concludes, inter alia, that
- 1. In most industrialised countries as well as some of the emerging countries, the number of IP rights applications continued to increase.
- 2. The granting/registration procedures have not kept up in many IP Offices with this increased number of applications.
- 3. Work on systems permitting electronic filing of applications, correspondence and fee payment is continuing at a great pace.
- 4. CD-ROM, DVD and the Internet are now the major vectors for disseminating IP information.
- 5. The value of the ATRs, and their chronological and geographical comparisons, is increasingly limited by the absence of many ATRs each year and the repetition of information already provided in previous ATRs.
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提出的边缘数据排序算法,用于扩展目标跟踪设计之中,此算法采用链式数据结构,在寻找搜索起始点的基础之上,以距离最近为相邻象元之准则在链式数据结构中进行搜索,并重新妆成边缘数据的空彰序集合。 相似文献
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既有公共建筑能耗中,围护结构节能潜力巨大。以兰州某既有办公建筑为例,采用DeST-C软件模拟围护结构不同材料厚度、窗型,得出系列负荷,通过对数据分析、比较,得出如下结论:外墙外保温适宜材料为50mm的挤塑板,最大热负荷节能率为45.66%;屋面适宜保温材料为65mm的挤塑板,最大热负荷节能率为4.25%;外窗各个朝向全部更换玻璃,推荐选用内张膜中空玻璃(双膜),最大热负荷节能率为7.36%;单独更换南向外窗材料,推荐选用真空镀膜复合中空玻璃,最大热负荷节能率为1.78%。 相似文献