Results 91 to 100 of about 10,456 (182)

基于变权—靶心贴近度的换流变压器状态评估方法

Gaoya dianqi
针对换流变压器状态评估中的数据匮乏以及各评价指标间的相互中和等问题，提出一种将变权理论和靶心贴近度相结合的换流变压器状态评估模型。首先，考虑到实际案例中指标的动态发展，采用变权模型根据指标量的劣化程度进行变权处理；其次，为了达到降低数据需求并能准确评估换流变压器状态的目的，采用靶心贴近度模型确定换流变压器对各个状态等级的贴近度；最后，采用隶属度函数将靶心贴近度转化为隶属度并计算换流变压器最终状态情况。实际案例表明：文中提出的状态评估模型不仅能够有效地评估换流变压器的健康状态而且同样适用于电力变压器 ...
李博, 吐松江 ·卡日, 张紫薇, 马小晶, 刘智超, 朱炜   +5 more
doaj  

应用云重心评判理论的并网风电机组性能分析

Gaoya dianqi, 2016
针对并网风力发电机组性能分析评估中存在大量定性指标、各指标模糊性和随机性并存的问题,提出了基于云重心评判法的并网风电机组性能分析评估模型。首先从技术参数、整体功能、系统可靠性及机组维修性4个层面分析并构建了风电机组性能分析综合评价指标体系。然后将各指标值转化为云模型并确定各个指标的权重值。最后计算出修正的加权偏离度,将其输入定性评判云发生器得到风电机组性能评估结果。运用所提方法对某型风力发电机组性能进行分析,并与模糊综合评判法进行比较,验证了该模型的优越性和有效性。
张心刚, 苏浩益
doaj  

[Predictors of sepsis-induced coagulopathy in children and development of a prediction model]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Maihemuti M, Simijiang Y.
europepmc   +1 more source

[Development and validation of a risk prediction model for cognitive impairment in rural elderly Chinese populations: evidence from the CHARLS study]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Wang F, Li W, Shang X, Li F.
europepmc   +1 more source

[Aesthetic goals of hypospadias repair]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Tang Y.
europepmc   +1 more source

[Association between insulin resistance and idiopathic central precocious puberty in girls and the diagnostic value of insulin resistance]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Li JB, Xiao Y, Jiang SQ, Luo XY, Zhang HR, Sun J, Shi WH, Yang Y, Wang W.   +8 more
europepmc   +1 more source

基于修正收益现值法的专有技术价值评估方法及实证研究 [PDF]

, 2018
吴新年, 曲建升, 白光祖, 郑玉荣, 靳军宝   +4 more
core  

[Expert consensus on clinical randomized controlled trial design and evaluation methods for bone grafting or substitute materials in alveolar bone defects]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Liao X, Xue Y, Zheng X, Wang E, Pan J, Zou D, Zhao J, Han B, Liu C, Hua H, Liang X, Shang S, Wang W, Liu S, Wang H, Wang P, Feng B, Ju J, Zhang L, Hu K.   +19 more
europepmc   +1 more source

[Multidisciplinary expert consensus on tophus damage grading and surgical treatment (2025 edition)]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Wound Repair Professional Committee of Chinese Medical Doctor Association.
europepmc   +1 more source

[Neurodevelopmental assessment of children with congenital heart disease: a Meta analysis based on the Bayley Scales of Infant Development and Wechsler Intelligence Scale]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Sun MT, Luo MJ, Tang JP, Chen Y, Chen KB, Zou Q, Ruan XR, Peng Y, Li ZW, Wen YT, Zhou CL, Wang TT, Qin JB.   +12 more
europepmc   +1 more source