Decision Analysis of Supply Chain based on game theory

供应链企业之间是既合作又竞争的关系，企业既要保证自身利益不受侵犯，又要实现供应链绩效最优，使得企业决策变得非常复杂。本文围绕供应链企业的合作关系问题展开研究分析。本文主要是在博弈理论的框架内，通过建立博弈模型，分析企业如何在合作状态下实现双赢，以及如何维持这种长期的合作关系，文章分为以下几个部分。第一章首先介绍了供应链的基本概念，特征，结构模式，国内外的研究概况。第二章介绍了博弈论方面的基本知识，包括博弈论的基本概念、分类，并介绍了本文将要用到的博弈的均衡。第三章和第四章是本文的重点。第三章介绍了供应链企业合作关系的动态性，分析影响供应链企业合作关系稳定性的企业行为，进行行为特征的博弈分析，得...The supply chain enterprises are cooperative and competitive. Enterprises not only have to guarantee itself interest, but also have to realize the best performance of supply chain, which make the decision of enterprises very complicated. This article focus on the analysis of cooperation in supply chain. The cooperative enterprises how to achieve a win-win situation and how to sustain long-term c...学位：工学硕士院系专业：信息科学与技术学院自动化系_控制理论与控制工程学号：20043101

Comparison of Microwave Digestion and Electric Heating Board Digestion in Determining Heavy Metals Content in Soils

电热板消解作为常规环境样品(如土壤、废水、固体废物等)预处理方法,存在着耗时、耗材且操作复杂等缺点.本文就微波和电热板两种消解方式在测定土壤重金属中的应用进行了科学分析.研究结果表明,采用两种消解方式测得的Ni、Cu和Cd结果均在标准值的范围之内,Cr和Pb的结果均低于最低值,Zn用微波消解测得的值也在允许值范围内.微波消解的结果总体上比较接近标准值.在回收率和精密度基本一致的情况下,微波消解以具有速度快、试剂用量少、样品不易被玷污、节约能源等突出优点,使其更具广泛的应用潜力.Traditional methods of the pretreatment of environmental samples(such as soil,sewerage and solid waste)are expensive,time-consuming and complex to manipulate.In this paper,the total heavy metals in soils have been determined by both electric heating board digestion and microwave digestion.The result shows that the concentrations of Ni,Cu and Cd measured by these two ways are within the standard scale,while the concentrations of Cr and Pb measured are lower than standard values.The concentrations of Zn tested by microwave digestion method are equal to the standard value.Generally,with the comparable recovery rate and measuring precision,microwave digestion is much more reagent-saving,sample-protecting and convenient to operate compared with the electric heating board digestion.Microwave digestion mothod is demonstrated a high potential to be used widely.国土资源部福建省沿海经济带生态地球化学研究重大课

Effects of Sintering Conditions on the Liquid-phase Sintering of SiC-Y_2O_3-Al_2O_3 System

研究SiC-Al2O3-Y2O3体系在无压液相烧结过程中,不同的埋粉、烧结温度和保温时间对致密化过程的影响规律以及发生的主要物理化学变化.通过对烧结体失重率、线收缩率和密度的测量和断面形貌的观察发现,以BN为惰性埋粉时,烧结助剂挥发严重,密度低;以Y2O3为埋粉时,烧结过程中Y2O3从埋粉扩散进入坯体,造成烧结体质量增加,实际上未促进烧结;Al2O3和60%(-βSiC)-25%Al2O3-15%Y2O3埋粉有利于烧结,这是由于埋粉中Al2O3的含量较试样中的Al2O3含量高,具有较高的Al2O分压,能有效抑制烧结助剂的挥发.埋粉相同时,由于烧结和挥发的竞争,密度随烧结温度的升高或保温时间的增长先增加后降低.SiC ceramics were sintered using Al_2O_3 and Y_2O_3 as sintering additives.The effects of the powder bed,sintering temperature and sintering time on the densification and microstructure were investigated.The weight loss,linear shrinkage,relative densities and chemical compositions of the sintered samples were measured.And the crystal phase compositions was characterized by X-Ray Diffraction,and the microstructures was observed by SEM.It was found that the BN powder bed could not promote the densification effectively;With Y_2O_3 as the powder bed,large amount of Y_2O_3 diffused into the sample,but the materials did not densify;With Al_2O_3 or 60%(β-SiC)-25%Al_2O_3-15%Y_2O_3 as the beds,much improved densification was obtained,the density were up to 3.07 g/cm~3、3.08 g/cm~3 respectively,higher than with the BN powder bed,because the weight loss of the sintering aids was suppressed or the shrinkage was improved.And it was found that β-SiC could transform into α-SiC with the holding time.The final density increased initially with sintering temperature or holding time,but dropped then due to the evaporation of the additives.国家自然科学基金(50472056);; 福建省重大科技专项(200314007);; 国家“863”计划(2002AA305101)资

Effects of Sintering Additives on the Liquid-phase Sintering of SiC

研究了以Al2O3、Y2O3、Al2O3-Y2O3、SiO2-YAG为烧结助剂时,SiC液相烧结行为以及烧结过程中发生的主要物理化学变化.与传统固相烧结相比,液相烧结使SiC陶瓷性能显著提高.通过对烧结体失重率、线收缩率及密度的测量和断面形貌的观察发现:Al2O3对坯体致密化的促进效果较差;Y2O3为助剂烧结时,由于高温下剧烈挥发,不能有效促进致密化;不同配比的Al2O3-Y2O3助剂能有效促进坯体致密,当配比满足形成YAG的化学计量比要求时,最有利于SiC的烧结.同时对SiC的液相烧结机理也进行了探索.Silicon carbide ceramics have been widely used in petroleum chemical,automotive,mechanical and aerospace industries because of their excellent resistance to thermal shock,high temperatures,oxidation and chemical corrosion.In this paper liquid phase sintered silicon carbide ceramics were prepared with A_2O_3、Y_2O_3、A_2O_3-Y_2O_3 and SiO_2-YAG as sintering additives respectively.Compared with solid state sintered silicon carbide ceramics,the liquid phase sintered one exhibits superior performance.The effects of different additives on the densification and microstructure were also investigated by the measurement of weight loss,linear shrinkage and relative density as well as X-ray diffraction(XRD) and scanning electron microscopy(SEM) analysis.It is found that A_2O_3 was not effective sintering additive due to its high evaporation rate at the sintering temperature.With Y_2O_3 as the sintering additive,large amount of Y_2O_3 from the powder bed diffused into the sample,but the materials did not densify,so Y_2O_3 could not improved the densification of silicon carbide effectively.However,different ratios of A_2O_3-Y_2O_3 significantly promote the sintering,and much improved densification were obtained.With the best result for A_2O_3-Y_2O_3 ratio right for the formation of YAG,the final density was 3.03 g/cm~3,and SEM showed the densification of this sample was highest.The liquid-phase sintering mechanisms of SiC were also studied.国家自然科学基金(50472056);; 福建省重大科技专项(200314007);; 国家“863”计划(2002AA305101)资

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies