摘要：针对差分麦克风阵列的白噪声放大问题,提出了一种参数化差分波束形成器的设计方法。通过理论推导,证明了延迟求和波束形成器能最大化白噪声增益,超指向波束形成器能最大化指向性增益。利用酉对角化方法处理转向向量与白噪声增益的伪相关矩阵,得到正交特征向量,并以此为基础设计波束形成器的参数。通过仿真实验,分析了参数化差分波束形成器在不同参数设置下的性能表现。实验结果表明,通过调整参数,所提方法能够在白噪声增益和指向性增益之间实现灵活的权衡与调节。

摘要：研究制造商主导的Stackelberg博弈下双渠道供应链的合作广告策略,分析信息不对称及双渠道对供应链合作广告投资决策的影响.研究表明,零售商在具有需求信息优势时会谎报需求信息,并且在一定条件下其谎报决策会降低制造商的利润,但能提高供应链的利润,这种情况下制造商无法通过激励合同促使零售商共享信息.另外,在最优合作广告策略下,当直销渠道与分销渠道所占市场份额的分配比例小于一定值时,制造商采取双渠道会使供应链参与者均受益.

摘要：Yixing clay is a type of clay from the region near the city of Yixing in Jiangsu Province,*** use dates back to the Song Dynasty (960-1279)

摘要：目的以笔者带领团队为南京博物院设计文化创意衍生产品及其包装设计作为探讨对象,探讨了包装设计中的3D虚拟技术。方法从3D虚拟技术的优势出发,以实践方法,挖掘包装设计实现过程中的3D虚拟技术。结论随着数字技术的发展、推广和应用,3D虚拟技术影响着艺术设计的各个领域,包装设计不仅仅需要3D技术帮助其虚拟实现,更重要的是推动包装设计全程数字化实现。

摘要：云南艺术学院产品设计专业创立于2000年,其不以工业生产为基础,而主要从事源发于民族民间工艺研究,做立足于田野调研基础上的实践研究。在经历了旅游商品设计、大民艺与现代设计、非遗与文创、手工创造基因与文化基因几番进路的迭代探索后,逐步建立了一套以在地实践为核心的设计教育体系。本文以20多年间云南艺术学院产品设计专业发展历程为叙事主线,探讨、分享专业建设的思路与经验,并对多元时代背景下地方高校特色专业建设发展进行思辨。

摘要：软文正日渐获得企业和学术界的重视。现实中,常常出现一个平面媒体上同时登载某品牌软文和该品牌广告或竞争品牌广告的情景。此时,软文和互补广告是否能够达到"双剑合璧"的效果?竞争广告是否一定会抑制软文的沟通效果?论文通过两个实验,深入分析和比较软文和互补广告及竞争广告的联合沟通效果。研究发现,软文和平面广告联合发布过程中,软文与互补广告的联合沟通效果并不一定高于与竞争广告的联合沟通效果。对于不熟悉品牌,软文和互补广告的联合沟通效果好于和竞争广告的联合沟通效果;对于熟悉品牌,软文和互补广告的联合沟通效果与和竞争广告的联合沟通效果没有显著差异,甚至在趋势上软文和竞争广告的联合沟通效果更好。

摘要：Malaria still threatens global health seriously *** the current discoveries of antimalarials are almost totally focused on single mode-of-action inhibitors,multi-targeting inhibitors are highly desired to overcome the increasingly serious drug ***,we performed a structure-based drug design on mitochondrial respiratory chain of Plasmodium falciparum and identified an extremely potent molecule,RYL-581,which binds to multiple protein binding sites of *** simultaneously(allosteric site of type Ⅱ NADH dehydrogenase,Q_(o) and Q_(i) sites of cytochrome bc_(1)).Antimalarials with such multiple targeting mechanism of action have never been reported ***-581 kills various drug-resistant strains in vitro and shows good solubility as well as in vivo *** structurebased strategy for designing RYL-581 from starting compound may be helpful for other medicinal chemistry projects in the future,especially for drug discovery on membrane-associated targets.

摘要：核级阀门现场使用可靠性水平与设计、制造等过程息息相关,通过可靠性鉴定与验收试验的产品通常具有较高的使用可靠性水平。因此,本文以核级阀门为研究对象,对核级阀门及其试验进行总结,并基于已开展的阀门可靠性鉴定试验进行故障率趋势分析和故障原因分析。结果表明,阀门可靠性鉴定试验大致可分为早期、中期、末期三个阶段,且试验早期的故障率最大,早期故障对试验的影响也最大。最后,基于分析结果和阀门可靠性鉴定试验现状,针对如何提升核级阀门质量与可靠性进行探讨,以达到降低现场使用故障率、提高现场使用可靠性的目标。本文成果可应用于核级阀门可靠性鉴定与验收试验方案设计。

摘要：目的探讨ADDIE模型教学法在肾内科实习护生临床带教中的应用效果。方法选择2022年1月-2023年12月在广西某“三甲”医院肾内科进行实习的护生为研究对象,采用信封法随机分为对照组和观察组,两组各80名护生。对照组采用传统一对一临床带教模式,观察组则采用ADDIE模型教学法进行临床实习带教。实习4周后,比较两组护生的肾内科专业理论知识考核成绩、肾内科专科操作技能考核成绩以及对临床教师实习带教的满意度。结果干预后观察组肾内科专业理论知识考核成绩、肾内科专科操作技能考核成绩及对临床教师实习带教的满意度均明显高于对照组(P<0.05)。结论ADDIE模型教学法能增强肾内科护生的学习主动性,促进肾内科临床教师业务能力及教学水平的提升,为临床带教提供科学依据。

摘要：The cooling control of the melt during the casting process is of great significance. A comprehensive closed-loop cooling control of castings by adopting a skeletal sand mold design was proposed. The skeletal sand mold consisting of an adaptive shell, functional cavities and a support was designed and created based on the finite difference meshes of a casting. It was applied to a round wall test casting. Two kinds of skeletal sand molds, one with lattice support and the other with enforcing ribs for this casting were designed and printed out by the 3 D printing(3 DP) method. Aluminum alloy A356 was cast by using these two sand molds. The first mold was cooled by natural convection, the other one by water spray cooling. Two sound castings were obtained. The sand mold temperature, cooling curves, microstructures, mechanical properties, residual stress and deformation were measured, compared and discussed. Water spray cooling hastened the cooling rate by 62%, increased the content of Mg and Cu in the α-Al matrix, improved the mechanical properties, and altered the surface residual stress state.