Assessment of traffic atmospheric environmental quality with LVQ neural network model

By comparison, LVQ network was better than the others in classification ability and training cost, and PNN network in computation load and easy use.

比较而言，学习矢量量化网络在分类能力和训练成本方面更胜一筹，而概率神经网络则在计算负载和易用性方面更好一些。

The results show that LVQ method outperforms these models and has good application prospect in this field.

研究结果表明学习矢量量化算法与这些传统方法相比具有更高的预测精度，在此领域有着良好的应用前景。

With its advanced technology in railway vehicle's air-conditioning systems and hydraulic pressure control systems, LVF is one supplier of the main air-conditioning systems for those big railway vehicle manufacturers such as siemens, Bombardier and alstom.

凭借其先进的轨道交通空调系统和液压系统技术，利勃海尔交通系统有限公司是庞巴迪，西门子，阿尔斯通等国际轨道车辆生产企业的主要空调系统供应商。

Method ERPs at 9 locations to LVF and RVF signals were compared in 23 normal subjects in 3 task conditions: looking forward only ( VC);

方法对23名被试者在3种任务条件下9个部位的与LVF和RVF相应的事件关联电位（ERPs）进行了比较。

Objective To study the response characteristics of left and right brain to signals from left ( LVF) and right ( RVF) visual fields during cognitive activity.

目的探讨在认知活动中左右脑对左右视场（LVF，RVF）信号的反应特性。

It is very important to determine left ventricular function ( LVF) in the diagnosis and treatment of heart diseases.

左室功能检查在心脏病诊治中极为重要。

The phenomena that the contents of S and N in naphtha hydrogenation treatment ( NHT) products exceed the standard are studied, and the influence of raw materials on the activity of catalyst is discussed.

对石脑油加氢处理产品硫、氮含量严重超标现象进行了研究，重点探讨了原料性质对催化剂活性的影响。

It is a key to GMRES ( m) method to choose the different m value to different equations of N-S equation in order to enlarge the application in CFD/ NHT;

N-S方程求解中不同方程不同m值的协调选取是GMRES（m）方法在CFD/NHT领域推广应用的关键；

Left ventricular remodelling, heart failure, postinfarction angina and death were obviously more frequent in HT group than those in NHT group ( P 0.05).

HT组发生左室重构，心力衰竭（心功能Ⅲ～Ⅳ级），心梗后心绞痛和死亡明显多于NHT组（P0.05）。

Finally, using NHT/ NST and atomic force microscope, the micro-tribological properties of enamel and the recovery of surface damage were preliminarily investigated.

本文采用纳米压痕/划痕仪和原子力显微镜研究了牙釉质的微观摩擦学性能，并对其损伤的修复过程进行了初步探讨。

The optimized design is performed through CFD/ NHT simulation for an avionics system adopting force convection air cooling, and also experiment is made to validate the simulation results.

针对采用强迫风冷散热的典型机载电子设备，利用CFD/NHT仿真进行优化设计，与热测试相结合进行验证。

Methods The clinical data of 82 elderly AMI patients with HT were compared with 94 cases of elderly AMI patients without hypertension ( NHT).

方法对比分析82例有HT史和94例无高血压（NHT）史的老年人AMI临床资料。

Once a left-winger , she can seem ill at ease grasping for the centre.

她曾是 左翼 人士, 要把握中间派力量似乎并不容易.

I played as a left-winger at ice hockey.

我打冰球的时候是一名左边锋.

BNP is a marker of systolic left ventricular dysfunction ( LVSD ) and heart failure.

脑钠肽是一种左室收缩功能和心衰的标志物.

The implanted pump sits in the left ventricle, the largest chamber of the heart.

这种仪器的植入位置是左心室(心脏最大的腔).

The thickening generally happens in the left ventricle, the heart's main pumping chamber.

增厚的部位一般为左心室, 也就是心脏为全身供血的主要腔室.

Results suggest that after injection, most internal pressure of left ventricle reduce, very few keep unchanged.

结果显示给予乙醇后, 大多数左心室内压降低, 个别左心室内压不变.

You're saying that his left ventricle had been weakened by the lvad malfunction?

你声称他的左心室因起搏器故障而开始衰弱?

Performs an arithmetic left shift on a bit pattern.

对位模式执行数学左移位.