调查性质的

With this aim , this paper has made a comprehensive study on the problem of the land requisition in our country . armed with such renowned theories as the theory of property right application , land rent , public choice etc ., the study has rendered a potent analysis of the problems involved in the current land requisition policy and their reasons . then , based on china ' s realities , it advances its own proposal to renovate the current policy from various aspects including the nature and limitation , the procedure and the standard of compensations of the land requisition , that is , by means of a combination of enumeration and generalization , decide on a strict definition of public interests ; improve the procedure of the requisition of land under the principle of openness , justice and high efficiency ; set up the compensation standard with the market price as the baton while versified by other supplementary ways ; most importantly , clarify the property right of land

本文通过对土地征用问题进行系统、深入的调查研究，针对当前我国土地征用制度存在的主要缺陷和弊端，应用产权理论、地租理论、公共选择理论、新制度经济学中的路径依赖理论以及其它相关理论分析土地征用存在的问题及其原因，并结合国内外的先进经验，立足本国实际，从征地性质与范围的界定、征地程序的完善，以及征地补偿标准的确定，提出了完善土地征用制度的政策建议：采取列举式和概括式相结合的方式，严格的界定&公共利益&范围；树立正当的程序观念，按照公正、公开与效率的原则，完善征地程序；建立以市场价格为主的土地征用补偿标准，建立多样化的征地补偿方式等来解决我国征地中存在的问题，但最根本的是明晰土地产权从而进一步完善我国土地征用制度。

The sketch and specific design approaches of mid-block street crossing are generalized and three management and control modes are discussed. Based on extensive investigation and survey, the paper analysis the arriving laws in different land-use condition and the traffic characteristics of different crossing entities under different control modes. The initial characteristic, the speed and dispersion of the mobile flow are also intensive studied, as well as the effect of mid-block street crossing. Establish the linear planning models on the coordination between the signals of mid-block crossing and intersection. Finally the evaluation of the model output is carried out from time saving results, safety, economic results and social results. Set the example of Taiping north road in Nanjing, surveying the traffic situation, applying the method of signal coordination between the mid-block crossings and intersection to realize the south-to-north signal coordination design. The evaluation results show the coordination plan are more superior to the current signal plan.

本文首先阐述了行人过街物理设施的概略设计和详细设计方法，讨论了路段人行横道的三种交通管制方式的设计方法和实用条件；其次，在充分的实际调查基础上，详细分析了不同用地性质条件下的过街需求的到达特性和不同交通管制下不同过街实体的交通特性，分析了进入路段的机动车初始流特性，并对机动车在路段中的车速特征、离散性以及路段信号控制人行横道对机动车流的影响进行了研究；然后，根据以上分析的过街交通和机动车交通的交通特性，建立了路段行人过街信号与交叉口信号协调控制的线性规划模型；最后，对模型输出的协调控制方案进行了效益评价分析，从时间效益、安全性、经济效益和社会效益四个方面，定量和定性相结合地对其实施效果予以评价；以南京市太平北路路段为例，根据现状交通状况，应用行人过街信号与交叉口信号协调控制的方法，对该路段由南向北方向进行单向协调控制设计，并进行方案效益分析评价，提出了优于现状控制方案的人行过街信号与交叉口信号协调控制方案。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。