目 录
前 言........................................................................................................................................0
1绪论........................................................................................................................................1
1.1研究背景......................................................................................................................1
1.2研究意义......................................................................................................................1
2回收物流概论........................................................................................................................3
2.1回收物流的涵义..........................................................................................................3
2.2回收物流的业务流程..................................................................................................4
2.3回收物流的主要特点..................................................................................................5
3城市废品回收的概况............................................................................................................7
3.1城市废品的来源及组成..............................................................................................7
3.2国内外城市废品回收物流现状..................................................................................7
3.2.1国外的研究现状................................................................................................7
3.2.2我国城市废品的回收模式................................................................................9
3.2.3我国城市废品的处理流程..............................................................................11
3.2.4我国废品回收物流中存在的问题..................................................................11
4.1系统仿真概述............................................................................................................14
4.1.1系统仿真的定义..............................................................................................14
4.1.2系统仿真的术语..............................................................................................14
4.1.3系统仿真的分类..............................................................................................15
4.1.4系统仿真的步骤..............................................................................................15
4.1.5系统仿真的作用..............................................................................................17
4.2 WITNESS仿真软件及性能分析.............................................................................18
4.2.1 WITNESS的用户界面...................................................................................18
4.2.2 WITNESS的特点...........................................................................................19
4.2.3 WITNESS的规则...........................................................................................19
4.2.4 WITNESS的建模与仿真过程.......................................................................20
5基于WITNESS的城市废品回收物流系统仿真研究........................................................22
5.1回收系统描述............................................................................................................22
5.2回收系统数据............................................................................................................22
5.3仿真模型的建立........................................................................................................23
5.3.1元素定义（Define）.......................................................................................23
5.3.2元素可视化（Display）的设计.....................................................................23
5.3.3各个元素细节（Detail）的设计....................................................................24
5.4模型运行和数据分析................................................................................................28
5.5模型优化....................................................................................................................29
总 结......................................................................................................................................33
致 谢......................................................................................................................................35
参考文献................................................................................................................................37
附录A 元素设计程序全文....................................................................................................40
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