The use of statistical modeling in the estimation of Oringin-Desityation (OD) matrix from trafinc counts is ceviewed In particular modets that consider explicitly the pres-ence of measurement and sampling erors in the observed link fiows are discussed This paper proposes treating the link choice proprtion as random variablcs Accordingly. new statistical models are fomulated and the corresponding Maximum Likelihood Estimator and Bayesiac Estimator of the OD matrix are developed The accuracids of these estimators are compared with those obtainc by prvious mcthods Copyright

Statistical models for the estimation of Origin-Destination (OD) matrix from trac counts that consider explicitly the presence of randomness in the link choice proportions have been developed recently. These models are more receptive to the-uctuations in the observations due to measurement errors and temporal variations and they can make better use of tra

研究了社会化协作与小农生产方式两种状态转换的机制，明确了交易收益等于通过交易节约的自给自足生产所需额外投入的资源，交易支出等于交易成本，建立了一个Stackelberg对策模型，确定出交易成本与交易收益的临界比率，此比率决定了企业的决策，等价地反映了社会化协作与小农生产方式的状态空间及其转换条件。

随着中国经济的迅速发展，对交通的需求变得越来越迫切，各大城市都建立了快速路系统。快速路上没有交通信号灯，车辆可以高速行驶，但是在快速路的出口，由于右转车等待向右并线，使快速路上的车辆不能及时驶出，甚至导致整条道路的严重拥堵。出口成了影响快速路通行能力可靠性的瓶颈，无法有效地发挥快速路迅捷、通畅的作用。依据交通需求满意可靠性观点，利用仿真数据，研究在车辆到达服从泊松分布，不同到达率、右转率、让行率条件下，由右转车向右并线引起的道路通行能力可靠性变化，给出分析结果和一些有价值的结论。