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Reliability-based design optimizationhas gained much attention due to the ability of considering the various uncertainty informations. Since reliability-based design optimization played a significant role in the improvement of product reliability and other performances in the full life cycle, it is one of the most popular research topics in the field of engineering design. The state-of-the-art achievements and contributions in the field of the reliability-based design optimization as well as the time-dependent reliability-based design optimization under aleatory uncertainties were reviewed from the perspectives of analytical strategies and surrogate models. Moreover, the existing problems and challenges were discussed, and some research directions in future were concluded. 相似文献
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企业信息平台中消息机制的应用研究 总被引:5,自引:0,他引:5
企业信息平台实现有业务往来的各应用系统之间的交互,同时从分散的各应用系统中提取公共信息,为企业信息发布提供及时、可靠的数据。文章介绍企业信息平台的设计方案,并探讨消息机制在企业信息平台中的应用。 相似文献
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心血管疾病已成为全球死亡率和发病率的首因,血清胆固醇水平过高是其主要危险因素。目前,降低人体内胆固醇水平的方法主要包括膳食干预和药物治疗,但药物通常具有副作用。乳酸菌作为益生菌的主要来源,已通过动物或人体临床试验证实了其降胆固醇作用,至少能对血清总胆固醇、总甘油三酯、低密度脂蛋白胆固醇、高密度脂蛋白胆固醇中的一项及以上指标有改善作用。乳酸菌可以通过调控体内胆固醇的吸收转运、分解代谢和/或合成代谢相关基因表达的机制来降低机体内胆固醇水平。不论是乳酸菌的体内降胆固醇能力还是作用机制,都存在着菌株特异性。文中对上述内容进行了综述,并对存在的问题进行了分析与展望,旨在为降胆固醇乳酸菌的深入研究提供参考。 相似文献
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