Parking guidance system , which aims at promoting the efficient utilization of park lots and nearby roads , utilize advanced gps , computer , electronics , communication and gis to realize collection , transmission , processing and real - time distribution of parking information . pgs can provide drivers with the location , using status , type of parking lots near the destination , the travel route to these parking lots and related road traffic information via many method , such as vms , broadcasting , telephone , internet , in - vehicle equipment , to guidance drivers to park conveniencely and reasonably . pgs can reduce the additional traffic volume , traffic congestion , time and energy wastage , environment pollution due to searching parking space blindly , promote the utilization rate of parking lot , enhance economic benefit , social benefit and environment benefit , upgrade the level of urban traffic information services 具体研究内容如下: 1 、利用bp神经网络及其两种改进算法实现了有效停车泊位预测; 2 、提出了基于停车场选择的停车诱导路径优化思想、算法; 3 、总结了国外停车泊位预定技术的研究现状、停车预定模型,并设计了停车预定功能实现的物理框架; 4 、给出了可变信息板信息发布的发布策略,并提出了停车场“空、满”状态判定方法; 5 、阐述了各种高效的信息传输方式在停车诱导系统中的应用框架,给出了基于gprs的停车诱导系统通信方案设计。
To scientifically evaluate the quality of water environmental of xishan district , this text proposes revising the original evaluation system , makes certain improvement in original evaluation system , such as settlement of factor , synthesizing pollution index computing method , water pollution degree judge method , etc 摘要为全面、科学地评价锡山区水环境质量状况，提出对原有评价体系作出修改，即对原评价体系中，评价因子的没定、综合污染指数计算法、水污染程度的判定方法等作了一定改进。
Based on lots of experiments , by combining the progress in mesomechanics with fea computation and analysis , this thesis investigated many parameters " effect on crack with an arc - tip in plain mixed - mode fracture , and compared existing criteria for fracture initiation , fracture direction and fracture mode transition 本文主要的工作是在试验的基础上，结合细观断裂力学当前的研究进展，通过有限元计算和模拟分析，研究了平面复合型断裂中各种力学参量对圆弧尖端裂纹断裂的影响，比较分析了现有的起裂判据、断裂扩展方向的判定方法以及断裂模式的转换条件。
It directly affects the engine ' s working reliability whether it ' s good or not . according to the past method , piston can only be decided whether it meets the need of engineering in test after it has been turn out . this paper simulates the real working condition of piston by combining the ked method and fe - contact analysis way . it reflects deforming rule of piston , and makes it possible that the structure problem of piston skirt can only be found during the design period , so the cost of developing new product is lowered and the time is shorted . this paper proves that the thought is practical and the result of simulation to piston lr4100 is in accord with practice 活塞裙部形线是活塞的关键结构之一，它的好坏直接影响发动机工作可靠性，以往的判定方法只有在活塞加工完成后，才能通过实验方法判定设计，能否满足工程实际的需要，本文通过ked方法与有限元接触方法的结合，模拟实际活塞工作情况，较为准确的反映出，活塞裙部的变形规律，在设计阶段发现活塞裙部的设计结构问题，节省新产品开发成本，缩短开发周期。
A new approach for initial localization of the mobile robots , namely complete line segments ( cls ) based localization was proposed . the definitions of cls as well as its properties and decision rules were given . the experimental results show that this method has much higher computational efficiency and better localization accuracy 作者先针对目前机器人定位研究中的难点? ?初始定位，结合激光测距雷达的数据特点，提出了基于完整线段( completelinesegments ， cls )的初始定位方法，包括cls的定义、性质和判定方法，并在机器人试验平台上进行了实验。
It has such feathers as multi - resolution , constant relative bandwidth , and the ability to indicate the local features of signal in time and space . after wavelet transform by using proper wavelet basis functions , the epileptic waves can be separated at different scale , then we can detect the epileptic waves by using the wavelet transform result at the proper threshold value 本文选取适当的小波函数，将信号进行连续小波变换，把脑电信号中的癫痫特征波在不同的尺度下分离出来，然后选取特定尺度下的变换结果，通过阈值判定方法对棘波进行检测。
