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2 result(s) for "郭泽轩"
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面向检验试车的涡扇发动机多目标性能优化
TB114; 涡扇发动机因其高推进效率、低燃油消耗率等特点广泛应用于军民用飞机,其性能直接影响飞行任务的安全与稳定.针对涡扇发动机不同状态下涡轮前温度与高压转速比指标进行性能优化,从而提高其一次检验试车通过率,具有重要现实意义.提出涡扇发动机的多目标性能优化框架,在某型号涡扇发动机历史生产数据集上,以检验试车过程中不同状态下涡轮前温度与高压转速比为目标变量,以某面积a、某面积b、某角度c为属性变量,建立涡扇发动机多目标性能模型并与目前主流算法模型对比验证,最后结合通过检验试车的后验概率推理与状态组合全局搜索,给出推荐状态组合表,辅助企业制定零部件生产制造装配标准,从而优化涡扇发动机性能、减少重新装配次数并提高一次检验试车通过率.
市场营销中服务营销的作用及实践路径
随着社会的不断进步,人民的生活水平在不断提高,消费需求也发生了变化,消费需求的变化让服务逐渐成为一种营销组合的重要元素。在竞争日趋激烈的社会经济下,只有提供优质的服务,通过服务,提高顾客满意度和建立顾客忠诚,也就是所谓的服务营销逐渐成为企业立足和持续发展的关键。为此,本文就市场营销中服务营销的作用及实践路径进行研究分析。