高速公路隧道路面抗滑可靠性分析

行车环境的特殊性和路面抗滑性能耐久性是影响高速公路隧道交通安全的重要因素.为了解路面抗滑性能现状,以某高速公路隧道路面为研究对象,实测道路交通量和隧道路面不同位置平均构造深度MTD和摆值BPN.预估了隧道路面抗滑性能的剩余寿命,并用模糊聚类分析方法对数据进行处理,得到隧道不同路段路面抗滑水平聚类结果,分析结果与实际状况吻合.为制定路面养护对策、进行合理的车速管制提供了科学依据,减少或避免交通事故的发生,也为高速公路隧道路面整体可靠性评价提供参考.

Abstract：

The particularity of driving environment and durability of pavement skid-resistant performance are important factors which influence traffic safety in expressway tunnels. In order to learn about the pres-ent situation of pavement skid-resistant performance, mean pavement texture depth (MTD) and British pendulum number (BPN) of one expressway tunnel pavement were measured in different places of this tun-nel. Residual life of its pavement skid-resistant performance was predicted based on surveyed traffic vol-ume. Fuzzy cluster was used to analyze pavement skid-resistant performance. The analysis result showed that the cluster result was in good agreement with the actual situation. This paper provides scientific basis to make reasonable pavement maintenance countermeasures and to define proper speed limitation in tun-nels, which will lead to a decrease in or avoidance of traffic accidents. Besides, this paper can also serve as a reference to the whole structure reliability analysis in expressway tunnels.     

Index Design and Comprehensive Evaluation of Germplasm Resources of Fruits Based on Mathematical Model of AHP and FCE:Sterculia nobilis Smith as a Case

The mathematical model of analytic hierarchy process (AHP)—fuzzy comprehensive evaluation (FCE) was applied to comprehensively evaluate the germplasm resources of Sterculia nobilis Smith,and the scientific nature and reliability of the mathematical model was verified by calculating index weights and comprehensive evaluation scores.In this paper,11 indicators were selected to construct a comprehensive evaluation system from four dimensions of yields,resistances,contents of main inclusions in seeds and tree shapes.AHP method was applied to calculate the index weight of each dimension,after passing the consistency test,FCE method was applied to comprehensively evaluate germplasm resources of S.nobilis Smith.The index weights of the yields,resistances,contents of major inclusions in seeds and tree shapes were 0.5518,0.2554,0.1279 and 0.0649,respectively.The yield had the greatest influence on the comprehensive evaluation of germplasm resources of S.nobilis Smith,which was in line with the actual production demand of S.nobilis Smith as a food crop.However,resistances and contents of major inclusions in seeds had limited influence on it,while tree shapes had the least influence on it.After fuzzy comprehensive evaluation,the final evaluation score was 88.00,the corresponding evaluation score was between 4 and 5,and the evaluation results ranged from slight good to good,which indicated that the evaluation weights corresponding to the four dimensions were more scientific and reasonable.In this study,the mathematical model of AHP-FCE was used to establish and evaluate the comprehensive evaluation system of the germplasm resources of S.nobilis Smith.According to the values of index weights and the evaluation results,it showed that the mathematical model was scientific and reliable,and it could provide a new reference method for the comprehensive evaluation of germplasm resources of other fruits.     

Applying Fuzzy Matter-Element Model Based on AHP to Evaluating Bids of Water Saving Irrigation Project

Owing to overcoming the characteristics that there are many economic and technical indexes which are fuzzy and incompatibility to each other in evaluating investment project,a new method is proposed. The method is based on the matter-element analysis and combined with the concepts of fuzzy mathematics, which is called the method of fuzzy matter-element analysis. It constructs the compound fuzzy matter element with the investment projects ,evaluation factors and their fuzzy value. Through establishing the best subjection degree (fuzzy value).complex fuzzy matter element of relational coefficient and weight aggregation of fuzzy matter-element model ,the writer achieves on optimum order of the investment projects according to the calculated relational degree and finds the best project. In this paper ,the calculation of weight adopts the analytical hierarchy process method (AHP). Through the actual example ,it shows that the model is simple and its calculation is reliable. It is very significant for the engineering evaluated bid and investment decision.     

Analysis and Design of Agricultural Sustainability Indicators System

The development and characteristic of agricultural sustainability indicators system （Sis）, at home and abroad, was reviewed. It was pointed out that the existing domestic methods of sustainability evaluation can not be accepted by foreign scholars, and their scientific basis is inadequate. The experience and shortcomings of the previous studies on the indicators selection and evaluation methods were analyzed, also with the significance for practice. Finally, a new SIs for agriculture development evaluation was proposed, together with the corresponding calculation and evaluation methods. The farmer development index indicator was proposed to embody the viewpoint that the development of people is the ultimate aim; the dynamic weight calculation method was designed to reflect the various significance of the different indicators when their values were changing; and new indicators integrate methods were also explored.     

Operational Performance Evaluation of Corn Processing Industry Technological Innovation Alliance Based on Survey Data in Heilongjiang Province

This paper selected the corn processing industry technology innovation alliance in Heilongjiang Province as the research object, evaluated the operational performance of the alliance by using analytic hierarchy process (AHP) and fuzzy comprehensive evaluation methods. AHP empirical results showed that the satisfaction of information communication and the satisfaction of the management process were the weakest. And the order from high to low on the level of indicators of the impact for the alliance was the result of alliance operations and the process of alliance operations, the behavioral attitude of alliance members. Besides, the results of fuzzy comprehensive evaluation showed that the operational performance of the corn processing industry technology innovation alliance in Heilongjiang Province was in the general level.     

Modeling and Analysis on Production Yield and Energy Consumption of Pelleting Process

The existing studies on the pelleting process were reviewed, and then the forming process of pelleting was introduced. Furthermore, the models describing the production yield and energy consumption of pelleting were presented. Based on the models, the influence of the pelleting structure parameters, die speed on the production yield and energy consumption were discussed. The results showed that larger pellet mill was preferred and the proper speed of the die should be selected to increase the production yield and reduce the energy consumption.     

Fuzzy Reasoning Methods by Choosing Different Fuzzy Counters and Analysis of Effect

Different fuzzy reasoning methods were gave by choosing different fuzzy counters.This article generally introduced the basic structure of fuzzy controller,and compared and analysised the reasoning effect of fuzzy reasoning methods and the effect of computer simulating control basicly on different fuzzy counters.     

Majorizational Choosing of Several Different Fuzzy Counter Operator

Different fuzzy reasoning methods were made by choosing different fuzzy operater.This article generally introduced the basic structure of fuzzy controller,and gave several different fuzzy controllers,and compared and analyzed different fuzzy coumters in theory and computer simulating control and realized majorizational choosing of several fuzzy counters.     

Application of Fuzzy Regression Model to the Prediction of Field Mouse Occurrence Rate

Expressions were given to describe the closeness between the estimated value and observed value for two asymmetric exponential fuzzy numbers. Based on that, the model was given to solve the question of fuzzy multivariable regression with fuzzy input, fuzzy output and crisp coefficients. Finally, with this model, the prediction of field mouse occurrence rate had been done and the satisfied result was obtained.     

Estimation on the Reliability of Farm Vehicle Based on Artificial Neural Network

As a peculiar product in China today,farm vehicles play an important role in economic construction and development of the countryside,but its work reliability remains low.In this paper truncated tracking was used to solve the low reliability of farm vehicles.Relevant reliability data were obtained by tracking a certain model vehicle and conducting reliability experiments.Data analysis revealed the weakest part of the vehicle system was the engine assembly.The theory of Artificial Neural Network was employed to estimate a parameter of the reliability model based on self-adaptive linear neural network,and the reliability function educed by the estimation could provide important theory references for reliability reassignment,manufacture and management of farm transport vehicles.