摘要：Many problems in engineering shape design involve eigenvalue *** relevant difficulty is that the eigenvalues are not continuously differentiable with respect to the *** this paper,we are interested in the case of multi-density inhomogeneous materials which minimizes the least *** the finite element discretization,we propose a monotonically decreasing algorithm to solve the minimization *** numerical examples are provided to illustrate the efficiency of the present algorithm as well as to demonstrate its availability for the case of more than two *** the computations are sensitive to the choice of the discretization mesh sizes,we adopt the refined mesh strategy,whose mesh grids are 25-times of the amount used in[*** and ***,***.,171(2001),pp.272-288].We also show the significant reduction in computational cost with the fast convergence of this algorithm.

摘要：We present a systematic scheme to achieve both high birefringence and low confinement loss in index-guiding photonic crystal fibers(PCFs) ,using a structurally-simple PCF with finite number of air holes in the cladding region. By increasing the size of the outermost-ring air holes in the cladding region,highly birefringent PCFs with low confinement loss can be successfully achieved. The design strategy is based on the fact that the modal birefringence of PCFs is dominated by the inner-ring air holes in PCF,which is verified by a full-vector finite element method with anisotropic perfectly matched layers. Numerical results show that modal birefringence in the order of 10-3 and confinement loss less than 0.1 dB/km can be easily realized in the proposed PCF with only four rings of air holes in the cladding region. We expect that such fibers will be much easier to be fabvicated than those with more air holes in the cladding region.

摘要：作为中国近现代出版巨擎,商务印书馆广泛运用各种书刊广告,进行各类图书推介与营销。1928至1938年商务印书馆在《中国评论周报》(The China Critic)上持续发布英文广告,宣传推介各类中英文图书。这些英文广告投放频率疏密有致、设计风格灵活整饬、主题类型丰富多样,体现出商务印书馆独特的图书广告营销策略。

摘要：2007年3月,作家出版社出版了王朔的新作《我的千岁寒》,书中夹有眼镜、杀毒软件等广告单。据了解,王朔新书版税高达365万元,其销售状况并不十分理想,但由于书中所夹广告已经收回约60万元的投资,使得新书的销售压力大大减小。此举可谓是第一个吃螃蟹者,引起了业界褒贬不一的争议。针对图书夹带刊登广告现象,本文作者以个别访谈的方式进行了调查:受访者更多地认为决定购买图书主要取决于图书本身的内容,附带广告仅有少许影响或基本无影响;同时,本文作者也对附带广告的载体能够被受众接受的方式,避免广告信息内容对图书造成瑕疵等提出了见解。作为一家之言供大家参考。

摘要：针对血压计设计中的用户需求,结合质量功能展开、卡诺模型等思想,对血压计用户需求的获取和需求建模方法进行研究。通过对用户需求的重要度计算,构建了血压计用户需求权重矩阵和质量屋的结构特征矩阵,给出了外观与结构设计方案,实现了用户需求到产品结构要素的有效映射,验证了该研究方法的可行性,为该类产品的创新设计提供参考。

摘要：通过对广告的投入产出效益与企业财务绩效之间关系的研究,以我国取得驰名商标认定的上市公司为样本,考察广告投入对商标资产和企业财务绩效的影响,然后依据总资产规模将上市公司分为大公司和小公司两类,具体分析两者在广告投入与企业财务绩效上的差异。结果表明:广告投入能够正向促进企业的财务绩效;广告投入可以扩大驰名商标的品牌效应,带动企业财务绩效;在规模较大的企业里,广告投入对驰名商标的品牌效应和财务绩效的提升作用更加明显。

摘要：In order to design a complex laser resonator with multi-parameters, the method of particle swarm optimization(PSO) algorithm is employed. The parameters influencing the resonator stability and mode size distribution are taken into consideration, and the stability criteria index and the mode size distribution are used as target values. The absolute values of the differences between practical and the target values are set as the fitness function for the PSO. By minimizing the fitness function, a laser resonator with the optimized cavity parameters can be found. The analyses for the design example demonstrate the feasibility and validity of the PSO method in the computer aided design of multi-parameters laser resonator. Applying PSO algorithm in the intelligent design of solid state laser resonators can realize the transition from manual trial-and-error to computer intelligent design of the laser resonators.

摘要：目的结合模糊Kano模型和可拓创新法,解决特种运载抱罐车目前同质化严重、用户满意度低等问题。方法提出基于模糊Kano模型和可拓创新法相结合的创新设计方法。首先,对特种运载抱罐车展开可拓分析,建立物元模型,进行拓展分析并利用模糊Kano模型,输出质量要素的重要程度,提取关键设计要素。其次,结合用户需求的数据分析结果,利用可拓变换方法将所构建的特种运载抱罐车物元数学表征模型进行变换,获取新的产品创意模型。最终利用优度评价法获取最优方案。结果通过对特种运载抱罐车的优化设计,实现在外观造型、安全性能以及功能特征等方面的提升。结论证明集成模糊Kano模型和可拓创新方法相结合的设计方法能够提高特种运载抱罐车的用户满意度和市场竞争力。

摘要：为了对松嫩平原地下水进行动态模拟评价，以Visual Modflow软件为平台，采用2008～2009年最新的监测数据，开展研究区地下水的数值模拟验证．结果表明，模型拟合误差的平均绝对值在0．5121左右，VM软件能够满足地下水动态评价的要求，可以在大型盆地开展地下水动态评价．预测结果表明，目前地下水开采量的增长是不可持续的，应该设计更加科学合理的开采计划，保护地下水资源．

摘要：2018年,美国迪士尼动画《胡桃夹子与四个王国》走进观众的视野,迅速吸引了无数观众的眼球。影片建立在童话故事的基础上,用丰富的视觉元素构建起基本的视觉空间,通过电影技术实现了童话般的视觉效果表现。该片无论是人物形象的塑造,还是环境氛围的营造,视觉效果设计都发挥了不可替代的作用,视觉美学设计巧妙地体现人物形象、揭示影片主题并突出表现了影片的整体风格。