This SD model has to be different from the one used in Homework 4 and 6.
这系统动态学(SD)模型必须不同于课后作业4和6的模型。
Methods: Using the SD model to build the SD diagram and using VENSIM to do stimulation analysis and intervention.
方法：用流率基本入树建模法构建系统流图，用VENSIM软件进行模拟分析和干预。
The study, based on the system of dynamics theory and SD model, simulated the balance between the water and soil of Ejina Oasis.
本文以系统动力学理论为基础，采用SD系统动力学模型，对额济纳绿洲水土资源平衡进行模拟研究。
The SD model of the compound model can dynamically determine the structure of land-use system in system idea and then better solve the first problem.
本复合模型中的SD模型能从系统的观点动态地确定土地利用系统的结构，较好地解决前一个问题。
Second, this paper establishes a SD model for Guangxi Beibu Gulf port group logistics system using of empirical research method, survey research method, simulation method.
第二，运用实证研究法、调查研究法、仿真模拟法建立了广西北部湾港口群物流系统SD模型。
Taking the forestry economy system of Nanch 'a area in Heilongjiang province as an example, a system dynamics (SD) model is built, tested and analyzed based on structure analysis.
以黑龙江省南岔区(局)林业经济系统为例，在分析系统结构的基础上，构建了林业经济系统SD模型，并且对总体模型进行历史检验与仿真分析。
Taking the forestry economy system of Nanch 'a area in Heilongjiang province as an example, a system dynamics (SD) model is built, tested and analyzed based on structure analysis.
以黑龙江省南岔区(局)林业经济系统为例，在分析系统结构的基础上，构建了林业经济系统SD模型，并且对总体模型进行历史检验与仿真分析。
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