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数字储能系统 [PDF]

open access: yes全球能源互联网, 2018
在能源互联网时代,电池储能系统将被广泛用于各种工业、商业和居民场景,如可再生能源、电动汽车和不间断电源等。因此,电池储能系统的效率、可靠性和安全性等主要性能指标对储能系统成功商业化部署至关重要。然而,电池单体差异性与固定串并联的电池成组方式之间的不匹配关系所形成的大规模电池成组中的莱比锡最小因子效应,即木桶短板效应,极大损害了电池储能系统,尤其是大规模电池储能系统的循环寿命、安全性、可靠性和有效容量。近年来,归功于材料科学的发展,高频电力电子开关器件日益普及,成本也日益降低 ...
慈松
doaj   +1 more source

Measurement of the A-Value of the Intersystem Transition in Al II at 2670 Å: Å Progress Report [PDF]

open access: yesInternational Astronomical Union Colloquium, 1984
Ratios of intensities of spectral lines produced in the radiative decay of collisionally-excited levels of atomic ions are versatile indicators of electron density in astrophysical plasmas when one of the lines involves a metastable level (see the review by Feldman 1981 and references therein). Radiative transition probabilities (A-values) and electron
H. S. Kwong, B. Carol Johnson
openaire   +1 more source

Optical spectrum of the post-AGB Star HD56126 in the wavelength interval 4010-8790 Å Å [PDF]

open access: yesAstrophysical Bulletin, 2007
42 pages, 6 ...
N. S. Tavolganskaya   +3 more
openaire   +4 more sources

The impact of CMS 8 TeV top quark pair production data on CT18NNLO gluon-parton distribution function(CMS 8 TeV顶夸克对实验数据对CT18NNLO胶子部分子分布函数的影响)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2023
在不进行量子色动力学(quantum chromodynamics,QCD)整体分析的情况下,估算新数据对部分子分布函数(parton distribution functions,PDF)的影响,以及用更新的部分子分布函数预测其他可观测量不确定度的贡献是一项非常有用的工作。首先,用更新和优化的部分子分布函数软件ePump(error PDF updating method package)研究由CMS 8 TeV顶夸克对产生的微分散射截面1/σdσ/dytt¯、1/σdσ/dmtt¯ 、1/σdσ ...
木沙江·卡得尔(MUSAJAN Kadir)   +3 more
doaj   +1 more source

Environmental racism and air pollution: Pre and post the COVID‐19 economic shutdown

open access: yesReview of Policy Research, EarlyView., 2023
Abstract Decades of research demonstrates that minoritized groups are disproportionately affected by swathes of harmful pollutants, including air pollution, even controlling for low income. Would significantly reducing individual car traffic help reduce the EJ gap?
Heather E. Campbell   +3 more
wiley   +1 more source

Tabular method of calculating Boolean difference and partial derivative of logical functions(计算逻辑函数布尔差分及布尔偏导数的表格方法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2006
分析了用图形方法计算逻辑函数的布尔差分与布尔偏导数存在的问题,在分析布尔差分与布尔偏导数的定义的基础上提出了计算布尔差分与布尔偏导数的表格方法,讨论了在1值最小项数较多时用计算布尔差分与布尔偏导数的表格方法.本文提出的表格方法与图形方法相比,具有不需画图,操作方便,易于计算机编程操作以及可用于多变量逻辑函数等优点.
LIANYi-qun(练益群)   +1 more
doaj   +1 more source

The generalized Kumaraswamy exponential distribution with application in survival analysis(广义Kumaraswamy指数分布及其在生存分析中的应用)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2013
定义并研究了广义Kum指数分布(GKumE).给出GKumE分布的分布函数、密度函数以及风险函数,并讨论了其密度函数的展开以及一些数学性质.采用极大似然估计方法对GKumE分布参数进行估计.最后,利用一组实际寿命数据分析了GKumE分布的应用.
ZHOUWei(周唯), ZHANGGuo-fen(张帼奋)
doaj   +1 more source

Asymptotic distribution of the product of trimmed sums(一类截断部分和乘积的渐近正态性)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2007
对于取值为正的独立同分布且平方可积的随机变量X1,X2,…且有连续的分布函数,令Mn = max{X1,X2, …,Xn},对某固定常数a>0,令,截断和Tn(a)= Sn — Sn(a),在X的分布满足中尾分布的条件时,截断和Tn(a)的乘积为渐近对数正态.
ZOUHai-lian(邹海连)   +1 more
doaj   +1 more source

A new skew Laplace distribution(一种非对称拉普拉斯分布)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2014
讨论一种新的非对称拉普拉斯分布,研究了该分布的性质、数字特征、参数估计、应用等,并将该分布与拉普拉斯分布在实际应用中的效果进行了对比.
ZHANGGuofen(张帼奋), DINGNing(丁宁)
doaj   +1 more source

Tabular method of calculating Boolean partial derivative and difference of the OC type logic function(计算OC型逻辑函数的布尔偏导数与布尔差分的表格方法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2007
讨论了OC型逻辑函数一阶布尔偏导数的规范OC展开式.在此基础上提出了计算OC型逻辑函数一阶、二阶布尔偏导数的表格方法.根据二阶布尔差分的定义以及二阶布尔差分与布尔偏导数的关系提出了两种计算OC型逻辑函数二阶布尔差分的表格方法,并作了比较.本文提出的计算OC型逻辑函数布尔偏导数与布尔差分的表格方法具有简捷、方便以及易于计算机编程操作等优点.
LIUGuan-sheng(刘观生)   +2 more
doaj   +1 more source

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