PBF

Stacked filters are a class of nonlinear digital filters based on threshold decomposition , whose optimizing process is a course of optimizing PBF .

层叠滤波器是基于阈值分解发展起来的一种非线性滤波器，它的优化过程是对正布尔函数不断学习的过程。

Prediction of Concrete Compression Strength Based on BP and PBF Neural Network Theories

基于BP、RBF神经网络混凝土抗压强度预测

Micro Observation and Analysis on Inclusions in PbF 2 Crystal

氟化铅晶体中包裹体的显微观察与分析

Application of PBF Belt Vacuum Filter in TA Residue Dewatering

PBF型带式真空过滤机在TA残渣脱水中的应用

Objective : To study the relationship between percentage body fat ( PBF ) and dyslipidemia in women .

目的：探讨女性体脂百分比（percentagebodyfat，PBF）与血脂异常的关系。

Monitoring and analyzing the BMI , WHR and PBF in adults

成年人体重指数、脂肪分布、脂肪含量的监测及分析

METHODS : Radioactive microsphere technique ( RMT ) was used in the measurement and calculation of PBF .

方法：采用放射性生物微球技术，测量并计算犬牙髓组织的PBF值。

The suggestion of these three groups of PBF has significant meaning in the study of tectonic of mid-Asian area .

这一构造体系对中亚地区的大地构造研究具有重要的意义。

Objective To assess the change of pulmonary blood flow ( PBF ) in pulmonary lesion with functional CT imaging of blood flow .

目的采用功能CT成像评价肺部病变时肺血流量（PBF）的改变。

This article summarized the research progress of the PBF gene structure , expression and its role in thyroid cancer and breast cancer development in recent years .

本文就近年来对PBF基因结构、表达分布及它在甲状腺癌和乳癌中作用的研究进展进行综述。

However , the portal blood flow ( PBF , Q PBF ) had no correlation with fibrosis staging .

而门静脉血流量（PBF，QPBF）与S无明显相关关系。

Lead fluoride ( PbF 2 ) crystal is a promising radiation material for use in Cherenkov detectors in high energy physics experiments .

氟化铅晶体是一种性能优异的Cherenkov辐射材料，在实验高能物理领域被用作Cherenkov探测器，有广泛的应用前景。

With the aid of positive Boolean function ( PBF ) descriptions , the connection of standard morphological filters and stack filters is established .

借助与正向布尔函数（PBF）表示，建立了标准形态滤波器与层叠滤波器的联系，分析了标准形态滤波器的输出统计特性。

Then , this paper studies the impacts of two kinds of asymmetry on the risk-taking behavior of the mutual fund which management fee is asymmetric PBF .

然后，研究了合同不对称与资金流动不对称对采用PBF合同的基金的风险承担行为的影响。

Author believes that these three group faults of PBF layout at the depth of 50 km with a space of about 1000 km between them ;

认为：约在50km深处、三组主干基底构造系以1000km左右的间隔分布；

We study the effect of asymmetric PBF on asset price , and show that the larger the degree of asymmetric is , the higher the asset price becomes .

研究了不对称PBF合同对资产价格的影响研究，发现合同不对称的程度越大，资产的价格越高。

The calculation of dielectric correlation function in PbF 2 + WO 3 + GeO 2 ( PWG ) glass ceramics was proposed .

提出了关于PbF2+WO3+GeO2（PWG）玻璃陶瓷中介电相关函数的计算。

Base on optimal stack filtering theory , the multi stage adaptive WOS filter is proposed by expressing the PBF of WOS filter in term of linear separate function .

根据层叠滤波器理论，所有WOS滤波器正布尔函数都是线性可分离的。

Objective To investigate the changes of hepatic portal vein blood flow ( PBF ) and oxygen metabolism during normothermic or hypothermic cardiopulmonary bypass ( CPB ) .

目的研究常温和低温心肺转流（CPB）期间门静脉血流量（PBF）和氧代谢的变化。

The second stage of the filter can automatically select corresponding positive Boolean function ( PBF ) according to the different area of input noisy image by designing detail detection unit in the filtering algorithm .

通过在滤波算法中引入细节检测单元，使得滤波器的第2级可以针对噪声污染图象的不同区域，自动选择相应的滤波器单元，从而达到滤除噪声、保持图象边缘细节的效果。

The STI of postmenopausal women were lower than that of premenopausal women , while their PBF and waist hip ratio ( WHR ) were higher significantly .

围绝经期妇女中绝经组的STI明显低于未绝经组，脂肪百分比（PBF）和腰臀比（WHR）却显著升高，提示增龄及停经是造成澳门女性骨量丢失、脂肪增多的原因之一。

Based on the observation with polarizing microscope , the inclusions in cubic PbF 2 crystals are classified as three types : needle like , tabular and irregular shape inclusions .

本文根据偏光显微镜观察，把存在于立方氟化铅晶体中的包裹体分为三种类型：针状包裹体、板状包裹体和无规则形包裹体。

The pancreas wet weight ( PWW ), serum amylase ( sAmy ) level s , pancreatic blood flow ( PBF ) and histological alteration were evaluated .

观察血清淀粉酶、胰腺湿重、胰腺血流量及胰腺组织病理改变；

For the male patients and the female patients , the ratios of the interviewers whose WHR and PBF exceeded the normal indexes were 70.27 % and 72.07 % , respectively .

男女腰臀比及体脂肪比率超标分别占70.27%、72.07%。

Their design is actually an optimization problem of positive Boolean function ( PBF ) . This paper presents a clone selection algorithm for optimizing stack filters under mean absolute error ( MAE ) criterion .

层叠滤波器设计的核心实际上是一个正布尔函数的优化问题，在MAE准则下，提出了一种基于克隆选择算法的层叠滤波器的优化方法。

In this paper , an algorithm is presented for randomly generating positive Boolean function ( PBF ) . It generates PBF randomly , so it makes using global optimizing algorithm to optimize stack filters possible .

提出了一种随机生成正布尔函数算法，能随机生成正布尔函数，使应用全局化优化算法优化层叠滤波器成为可能。

Objective To study the effect of regional intra arterial perfusion of 5 fluorouracil ( 5 Fu ) on pancreatic blood flow ( PBF ) in rats with acute necrotizing pancreatitis ( ANP ) .

目的探讨区域动脉灌注5氟尿嘧啶（5Fu）对急性坏死性胰腺炎（ANP）大鼠胰腺血流（PBF）的改善作用。

Morgan Stanley delivers crude to an Ohio refinery owned by PBF energy and buys petrol , diesel and lubricants made by its two other refineries in Delaware and New Jersey .

摩根士丹利向pbfenergy位于俄亥俄州的一家炼油厂供应原油，并向该公司位于特拉华州和新泽西州的另外两家炼油厂购买汽油、柴油和润滑油。

One of the main features of PBF is to simplify the process of the list of candidate forwarders by utilizing of reference path generated previously by routing protocols , and therefore PBF exhibits more scalability .

PBF的主要特点之一是利用先验的参考路径，简化了候选转发节点集的操作，因而具有良好的可扩展性。

Conclusion : Diagnosis of obesity with BMI and PBF are two different diagnosis methods , incidence rate of obesity the latter obviously is higher than the former , two combine in clinical work , which can avoid deviation and misleading .

结论：用体质量指数和体脂含量作为不同的诊断方法，肥胖检出率后者明显高于前者，临床处理个体化问题可将两者结合起来，避免偏差和误导。