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Algebraic method for calculating c-derivative, c-partial derivative and its application in detecting special boolean function(计算布尔函数c-导数、c-偏导数的代数方法及其在检测特殊布尔函数中的应用)

Zhejiang Daxue xuebao. Lixue ban, 2016
提出了c-偏导数的定义和计算c-导数及c-偏导数的代数方法，给出了基于c-偏导数检测冗余函数、基于c-导数检测线性函数、基于高阶c-导数检测自反函数和自双反函数的方法.与图形方法相比，代数方法具有不受变量限制、简单方便等优点.
WANGFang(王芳)
doaj   +1 more source

棒形抗折试条的统计强度

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
doaj  

草原干涸湖床地表粒度特征及其对沙尘释放的影响

Shuitu Baochi Xuebao
[目的] 为探究干涸湖盆典型地表风蚀过程及盐碱尘暴形成的机理。[方法] 以锡林郭勒盟阿巴嘎旗查干淖尔干涸盐湖为研究对象,从湖心到湖岸根据盐湖地表的动态演化过程选择4种典型地表(结皮地表、破碎地表、活化地表和沙化地表),分析从湖心到湖岸近地表土壤粒度分布特征、风速廓线及输沙规律等。[结果] (1)从湖心向湖岸延伸,地表0—2 cm沉积物颗粒粒配整体呈逐渐变粗的趋势,且以黏粒和粉粒为主;(2)干涸盐湖从湖心到湖岸风速整体呈降低趋势,不同地表的风速廓线基本符合Karman的速度对数分布规律,且拟合效果较好 ...
李思瑶, 蒙仲举, 祁帅
doaj  

[Accuracy of dynamic navigation-assisted trephine method for bone harvesting]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Liu J, Zhu N, Chang Y, Gao X, Zhang Y.
europepmc   +1 more source

[A multi-view stereo vision methodology for digital soft-tissue impressions in fixed implant rehabilitation of edentulous patients]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Yang Y, Tian Y, Shan S, Li W, Shang X, Wang Y, Guo S, Gao Z, Wen A, Zhao Y, Wang Y.   +10 more
europepmc   +1 more source

[Regional distribution differences and influencing factors of primary healthcare institutions in China]. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban
Ni P, Wang J, Shi L, Xu L.
europepmc   +1 more source

[Establishment of a Noninvasive Diagnostic Model for Wilson Disease Using Metallomics and Machine Learning]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Zhou H, Xu H, Pan A, Tang X, Zhang J, Xie L, Li Y.   +6 more
europepmc   +1 more source

[The causal association between circulating zinc, magnesium, and other minerals with autism spectrum disorder: a Mendelian randomization study]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Zhu BQ, Chen SJ, Gu TM, Jin SR, Yao D, Zheng SS, Shao J.   +6 more
europepmc   +1 more source

[A Meta analysis of risk factors for pulmonary hypertension related to bronchopulmonary dysplasia in preterm infants]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Yao ZZ, Yu AZ, Feng X.
europepmc   +1 more source

[Differential analysis of gut microbiome in patients with periprosthetic joint infection, aseptic failure, and osteoarthritis]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Muzhabaier K, Li Y, Wang F, Guo X, Chen Q, Zhang X, Cao L.   +6 more
europepmc   +1 more source