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井水位的“记忆”滞后效应 总被引:5,自引:0,他引:5
观测资料表明,井水位对信息响应存在的“记忆”滞后现象,它与一般的位相滞后不同,在鲁29井现场试验也证明了井水位对井吕空气压力变化的响应存在的“记忆”滞后现象。利用水平层状承压含水层模式,从理论上解释了井水位对井口空气压力变化响应“记忆”滞后现象,认为这种现象与水井含水层的导水系数有关,含水层导不系数越小,这种现象越明显,用一般多元回归方法无法较好地扣除井水位中“记忆”滞后影响,作给出了一种可以扣 相似文献
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谭采云 《CT理论与应用研究》1993,(2)
存贮器是CT 图象处理器中电路板最多的部件,也是故障较多的部件。本文分析存贮器物理地址和虚地址之间的关系,介绍存贮器板中故障器件定位方法。经多次实际应用检验,每次都完全成功。 相似文献
35.
Minelle Mahtani 《GeoJournal》2009,74(3):257-264
With its longstanding history and interest in issues of landscape and representation, geographers are ideally positioned to
analyze the relationship between media, identity and place in media. What is missing, however, is a grounded understanding
of the dynamics of the locally produced politics of representation and, in particular, how these representations are perceived
by different members of the audience. This paper briefly explores the nexus of race, news production and news consumption
through an analysis of interviews with racialized journalists (journalists who identified as members of minority racial groups)
and a focus group conducted with self-identified Iranian Canadians. The paper looks specifically at two themes that emerged
in the empirical material: the contamination of memory and the creation of colonized memory media-spaces for some participants
in the focus group, and the nature of racialized silences in the newsroom. I suggest that geographies of news might well be
understood as a complex, interactive process of the production of meaning between both producer and consumer, where news content,
ethics, roles and values are negotiated through multiple social contexts. 相似文献
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The lag-one serial correlation coefficient is one of the important hydrological metric used as a quantitative measure of carry-over
capacity of water stored within a catchment. In this study, the annual lag-one serial correlation coefficient has been computed
for 27 unregulated streams spread across the two main climatic regions of New Jersey, USA. The computed mean annual lag-one
serial correlation coefficient was found to be 0.17, which is typical of the national value. It appears that streams that
drain northern catchments have higher carry-over capacity in comparison to their southern counterparts. Further, the Goud–Dincer
Gamma method of reservoir storage capacity was used to compare the average reservoir storage needed to meet the over-year
storage requirement for a hypothetical reservoir located within the two main climatic regions. The results revealed that on
average, a reservoir needed to meet over-year storage requirements in climate region 1 (northern New Jersey) needs to be a
little more than one half times as large as those in climate region 2 (southern New Jersey) for the same level of regulation.
Though groundwater recharge to streams in the southern catchments are generally higher than their northern counterparts, it
appears relatively less ground water (release from storage) in any given year in the south is carried from the previous year(s). 相似文献
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利用自记忆模式试报我国汛期降水 总被引:4,自引:0,他引:4
基于大气运动是一种不可逆过程的观点,引进了记忆过去时次资料的记忆函数。进一步阐明了大气运动的自记忆概念,导出了大气运动的自记忆性方程。基于自记忆原理,从大气热力学方程和水分平衡方程出发,建立了一个用于短期降水预报的数学模式。对6-8月我国汛期降水预测作了12年的回报试验,结果表明该模式的预测评分比目前的月预报有很大提高。 相似文献