Based on the theories of traffic parameters detection and modeling pollutant concentration the paper discusses on estimation of traffic pollutant concentration along urban roadside with the technique of artificial neural network .

本文首先从交通参数检测与 道路 交通污染物 浓度预测两方面的理论出发，研究探讨了道路周边大气污染物 浓度预测问题，并提出了一个利用神经元网络技术预测大气污染物浓度的模型。

Human errors of Air traffic controllers are mostly caused by the poor working status or lack of concentration .

而 管制员的人因失误的产生大多是由工作状态不佳、注意力不 集中等问题导致的。

Daily work of mining equipment wireless communication neighborhood stray current power lines and traffic in the ore concentration area are the main noise source .

分析其干扰源，主要为：矿山采矿设备的日常工作，矿 集区内的无线通讯设施，居民区游散电流，输电线， 道路 交通等。

The significance is explored the relationship between the road traffic accident and blood alcohol concentration of drunk drivers for forensic medicine .

探讨道路 交通事故与驾驶员血酒精 含量关系及其法医学意义，为预防、控制道路交通事故和创伤急救提供重要依据。

The results show that the annual mean value for runoff is 1529 . 2 mm with of the highest values coming from traffic roads and commercial districts . The concentration of pollutants is high in the urban storm runoff .

结果表明，珠海城区暴雨产流年平均 1529.2mm，其中以 交通主干道和商业区径流量最大。

The simulation results showed that traffic operation status and concentration of the pollutants improved significantly the value of pollutant exposure and dose decreased in condition of actuated signal .

仿真结果表明，采用感应信号控制方法，交叉 口 机动车运行状况得到明显改善，主要污染物 浓度显著降低，行人暴露量与污染物吸入剂量明显减少。

Taking aviation market turnover and traffic volume for object by Market Concentration Rate Herfindahl-Hirschman Index and Lorenz curve for measure that Chinese civil aviation market presents the characteristics of the oligarchic monopoly .

以航空市场的周转量和 运输量为对象，以市场 集中度、赫尔芬达尔&赫希曼指数和洛伦兹曲线为衡量指标，得出我国民航市场呈现寡头垄断的特点。

Research conclusions : In the one-way highway traffic tunnel with vents on the roof of tunnel the natural ventilation can control the harmful gas concentration inside the tunnel within sanitary standards .

研究结论：在顶部设有开孔的单向公路 交通隧道中，自然通风可以控制隧道有害气体 浓度在卫生标准的之内。

The rules of evolvement of the interior spatial structure of port-hinterland are ports transition from scattered to concentrate port city by relying on port into and port detachment the traffic economic belt in different stages concentration and diffusion mutual growth .

港口-腹地系统空间结构演变的规律为：港口由分散向集中过渡；港口城市由依托港口转为与港口剥离； 交通经济带在不同阶段 集聚与扩散相互消长。

Using of fractal theory to analyze the evolution of the spatial structure of tourist resources in Qinhuangdao using comparative methods to analyze Qinhuangdao tourism traffic using the preference scale market competition the degree of concentration to analyze the spatial structure of Qinhuangdao tourist market .

利用分形理论来分析秦皇岛旅游资源空间结构的演化，运用比较的方法对秦皇岛旅游 交通空间结构作了分析，运用亲景度、市场竞争态和地理 集中度来分析秦皇岛客源市场空间结构。