农村集体土地发展权的二元主体及其矛盾

本文讨论农村集体土地发展权的主体问题，提出了农村集体土地发展权具有二元主体——国家和农民——的新观点，并从理论与现实两个方面阐述了发展权主体二元性的原因。在此基础之上，本文以国家征地制度和农村集体土地流转为例，分析了国家和农民为了争夺农村土地发展权而引发的矛盾。最后，本文提出了一个解决矛盾的简要方案。     

刍议中小企业发展中的金融支持问题

本文从中小企业的融资特征出发，通过分析造成中小企业融资困难的两大因素(信息不对称和金融体系的结构)的解决方式，提出一个满足不同规模企业融资需求的多层级的金融市场体系，并且在中小企业这一层级的金融市场中，构筑多元化的金融体系，应是适合中小企业发展的有效的金融体系结构。在此基础上，对我国建立多层级多元化的中小企业金融支持体系进行了一些思考。     

加强人民监督遏制权力腐败

人民监督是我国行政监督体系中的重要组成部分,在当前遏制权力腐败的斗争中发挥重要作用.文章通过对我国人民监督现状的分析,提出了加强人民监督的具体对策.     

RESEARCH ON MATHEMATICAL SIMULATION OF RESIDUAL CHLORINE DECAY AND OPTIMIZATION OF CHLORINATION ALLOCATION OF URBAN WATER DISTRIBUTION SYSTEM

The concentration of Residual Chlorine (RC) frequently violates the standard in situations of urban water distribution system with large water supply area and long time of distribution. If chlorine dosage increases within water treatment plant, although RC in distribution system could meet water quality standard, Disinfection By-Products (DBPs) such as hydrocarbon halide rises. In the paper, a mathematical model of chlorine allocation optimization was presented based on reaction kinetics mechanism and optimization theory to solve the problem. The model includes the objective function of minimizing annual operation cost and constraints of RC standard and rational chlorination station distribution, and solving by 0-1 Integer Programming (IP). The model had been applied to a real water distribution system. The simulation results of the model showed that adding chlorine in‘ water distribution system remarkably improved water quality and reduced the operation cost by 49.3% per year less than chlorine dosed only in water treatment plant to meet RC standard. The results prove adding chlorine in water distribution system based on the model can bring both technological and economic advancement.     

MELINIKOV’S METHOD FOR NON-LINER ROLLING MOTIONS OF A FLOODED SHIP

1.INTRODUCTIONA ship in waves can exhibit nonlinear re-sponse,which may lead to undesirable motion,in-cluding capsizing.Many researchers have consid-ered nonlinear ship motionin waters[1,2].Nonlinear motion of a flooded ship in waterhas been investigated during these years.In thepast years,the stability of floodedshipis esti matedby modifying that of the original ship in the viewof stability lost.However,the flooded water hassome critical effects on ship motionin waves.Andit was indicate…     

APPLICATION OF LBM-SGS MODEL TO FLOWS IN A PUMPING-STATION FOREBAY

A 2-D Lattice Boltzmann Method (LBM) coupled with a Sub-Grid Stress (SGS) model is proposed and validated by flows around a non-submerged spur dike in a channel. And then the LBM-SGS model is further applied to flows in a pumping-station forebay. Shallow water equations are numerically solved by the LBM and the turbulence can be taken into account and modeled efficiently by the Large Eddy Simulation (LES) model. The bounce-back scheme of the non-equilibrium part of the distribution function is used at the inlet boundary, the normal gradient of the distribution function is set as zero at the outlet boundary and the bounce-back scheme is applied to the solid wall to ensure non-slip boundary conditions. Firstly, the model successfully predicts the flow characteristics around a spur dike, such as circulating flow, velocity and water depth distributions. The results are verified by the experimental data and compared to the results obtained by conventional Smagoringsky Model (SM) of LES. Finally, the LBM-SGS model is used to further predict the flow characteristics in a forebay, such as secondary flow and water level. The comparisons show that the model scheme has the capacity to simulate complex flows in shallow water with reasonable accuracy and reliability.     

中国崛起的认识论及其叙事衍生

从自我认同与群体归属两种需要的分析视角,作者得出了四种观察中国与非中国之间关系的视野:国家、亚洲、文明与天下。其中,从中国的角度出发,观察非中国的视野主要是国家与天下。如果继续按照自我认同与群体归属两种需要的区分,我们可得出国家权力、霸道、主权身份以及中心-边陲四种叙事的文本。简言之,看待中国崛起不是一件纯粹的客观之事,而是涉及观察者的群我关系之深层需要。中国研究不仅是一个应该适应国情并随之调整的方法论问题,而且它还涉及知识形成的前提,亦即中国与非中国关系所涉及的群我关系。群我关系的形成与认知须靠文化形塑,进而使行为主体形成对中国崛起的认识角度与文本选择。     

潮汐电站月周期优化调度模型及其应用

在分析单库双向潮汐电站运行特点的基础上，以月发电量最大为目标建立电站优化调度模型，进行了动态规划描述，计算了江厦潮汐电站月最大发电量。与实际月发电量比较后表明，该优化调度模型合理有效。     

碾压混凝土的强度研究

本文对碾压混凝土的强度进行了深入研究,提出碾压混凝土的抗压强度与水灰比和粉煤灰掺量的相关关系及抗拉强度与抗压强度的相关关系,为碾压混凝土的理论设计和工程实践提供理论指导和技术支持。     

Simulation algorithm for spiral case structure in hydropower station

In this study, the damage-plasticity model for concrete that was verified by the model experiment was used to calculate the damage to a spiral case structure based on the damage mechanics theory. The concrete structure surrounding the spiral case was simulated with a three-dimensional finite element model. Then, the distribution and evolution of the structural damage were studied. Based on investigation of the change of gap openings between the steel liner and concrete structure, the impact of the non-uniform variation of gaps on the load-bearing ratio between the steel liner and concrete structure was analyzed. The comparison of calculated results of the simplified and simulation algorithms shows that the simulation algorithm is a feasible option for the calculation of spiral case structures. In addition, the shell-spring model was introduced for optimization analysis, and the results were reasonable.