Results 31 to 40 of about 256,015 (173)
ウェーブレットに基づいた地中レーダ受信信号のノイズ除去と埋設管位置標定に関する研究 [PDF]
, 2018 電気通信大学201
Makoto Kobayashi, 小林 允
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Differences in characteristics between naturalized threatened plants and other threatened plants
Conservation Biology, EarlyView.Abstract Many non‐native plant species introduced by humans have become naturalized. At the same time many species are threatened in their native range. However, the number of plant species threatened in their native range that are naturalized elsewhere remains unknown.
Weihan Zhao +10 more
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Dianci bileiqi, 1980 本文研究了具有内部微观结构缺陷的瓷件在单轴向应力状态下强度的维布尔分布,给出δu=0情况下决定维布尔参数的一个图解方法。根据维布尔分布导出抗折瓷件在一定可靠性下极限应力下限值的计算公式,并比较了按维布尔分布和按正态分布计算的在相同可靠性下瓷件极限应力下限值的结果,结果表明按维布尔分布计算的下限位偏于安全。
马功勋, 刘长荣, 陶增炎
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Bayesian modeling for composite reliability and maximal reliability. [PDF]
, 2019 A reliability coefficient in psychometrics is used as an index of consistency. The α coefficient has been widely used as an estimate of reliability coefficient: however, in recent years, there has been an increasing interest in devising other methods of ...
Akiyama Takashi, 秋山 隆
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Comprehensive framework for assessing and optimizing existing research networks
Conservation Biology, EarlyView.Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East +2 more
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Zhendong Ceshi yu Zhenduan为了研究大跨屋盖表面风压非高斯特性及极值风压分布，对某高铁站房屋盖进行了风洞测压试验。首先，对表面风压进行高斯分布和非高斯分布的划分；其次，对比3种不同单一概率分布（Gumbel、Lognormal和Weibull）及其对应的组合分布（双Gumbel、双Lognormal和双Weibull）对屋盖表面风压时程的拟合效果，并比较了组合概率分布获取的极值风压与修正Hermite法的估计结果；最后，给出全风向角下屋盖极值风压分布。结果表明：组合概率分布对风压时程的拟合效果优于单一分布 ...
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Gaoya dianqi, 2003 利用表面电荷法对绝缘子表面的电压分布和场强进行了计算,研究了影响电压分布的某些因素,如均压环、伞裙对电压分布的影响。计算表明,合成绝缘子的电压分布特性与瓷质绝缘子有很大不同,其电压分布非常不均匀,高压端承受了更高的电压。伞裙和均压环均能改善电压、场强分布,但合成绝缘子均压环对电压分布均匀性的改善不如瓷质悬式绝缘子。
郭效金
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DEAとInverted DEAのノンパラメトリック検定を用いたわが国の電力各社の生産性に対する電力自由化の効果検証 [PDF]
, 2018 This paper is verifying of the effects on the electric power deregulation in Japan to the productivity of each electric power company by using the parametric and nonparametric test of the DEA (Data Envelopment Analysis) and the Inverted DEA (Inverted ...
SUGIYAMA, Manabu +2 more
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パーチェス法を用いたエージェントシミュレーションによる金融機関の合併に関するシステミックリスクへの影響分析 [PDF]
, 2018 リーマンショック以降，欧州を中心にインターバンクネットワーク上の金融機関のシステミックリスクに対して関心が高まっている．本研究では，金融機関の破綻の影響がインターバンクネットワークにおいてどのように伝播するかについてエージェントベースシミュレーションを用いて分析した．シミュレーションでは，(1)市場性資産価格の下落率と(2)有価証券に与える損害率を変化させる2種類のシナリオを用意し，金融機関の合併の有効性・破綻リスクのモデル化を試みた．その結果，(1)金融機関の合併を実施した場合においても ...
Akihiko OHSUGA +7 more
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Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Conservation Biology, EarlyView.Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
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