从第三人称指示语看五四时期中国的近代化——以“她”字为例

五四时期是中国历史上的大变革时期,其所涉及的新文化运动更被称为现代中国的文化革命。这一时期中西文化相碰撞,西方的语言体系逐渐引入中国,作为语用学中人称指示语的重要组成部分的第三人称指示语,在西风渐入中也发生了新的变化,一定程度上反映了五四时期中国的近代化。     

企业协同创新伙伴选择研究

协同创新伙伴与企业创新能力提升密切相关。构建包含个体创新指标和协同创新指标的企业协同创新伙伴选择指标体系,个体创新指标包括企业敏捷程度、财务健康、技术能力、信誉状况与知识拥有和管理经验,协同创新指标包括企业目标一致、资源互补、团队协作良好、动机一致和知识相通,同时应用CRITIC法确定指标权重,运用主成分投影法选择协同创新伙伴,并通过一个汽车企业具体案例分析其在企业中的实际应用,验证了企业协同创新伙伴选择指标体系和选择方法的有效性。     

验证码安全性检测与评估系统

随着时代不断地发展,计算机技术迅速地更新,为了人们的信息安全,验证码技术已经成为保护网络安全的重要手段。验证码技术属于人机区对于大小固定的、质心位置居中的验证码,可以得到百分之百的识别率。由于扭曲字符干扰较大,所以识别率达不到理想效果。文章采用的方法有助于提高验证码的安全性。     

区间直觉模糊多属性决策方法在数字图书馆馆藏中的应用

针对备选方案中评价专家给定的区间直觉模糊信息,提出一种基于投影思想的区间直觉模糊信息多属性决策方法。为全面考虑各评价指标权重信息不完全的情形,将专家对各指标的正、负理想方案作为参照点,建立一个基于投影的多目标规划模型以获得指标权重,并运用加权算术平均算子对评价信息进行集结,从而获得各方案的排序与择优结果。最终,通过数字图书馆馆藏实例验证该方法的可行性与有效性。     

Using 3D digital models for the virtual restoration of polychrome in interesting cultural sites

In most cases, the polychrome paintings that decorated heritage buildings no longer exist or are reduced to mere remnants. These facts decontextualize the sites in their historical and artistic evolution, distort the intention under which they were conceived, and hamper their accomplishment. Current recovery methods are restricted to the stabilization of the remains in their present status, requiring a lot of completely manual work that is expensive and almost unrelated to the use of new technologies. Three-dimensional digitalization and modelling is proved to be the basis for the virtual recovery of paintings in a significant edifice. To do so, an innovative methodology is presented that allows the 3D geometric information of a site (captured using a laser scanner) to be combined with specially designed 2D artistic images. The resulting 3D digital models can then be focused, with high efficiency projectors, on the equivalent area of the original site, and also used as raw material to compose a video-projection without perspective effects to emulate, with due rigour, the primitive appearance, its evolution along time, the effects of the deterioration, or other interesting aspects. The results obtained at Sta. María de Mave (Palencia, Spain) are presented, supporting the potential of this new methodology not only as a scientific way to discuss possible restoration hypotheses with experts or as a didactic tool for narrating the historical evolution of a monument, but also as a spectacular show for tourists.     

气象传真图的投影变换

对地图投影变换的数值方法进行了介绍。并以气象传真图为研究对象，设计了全自动投影变换程序，能够将极射赤面投影的气象传真图变换成墨卡托投影。     

微格演练在推铅球教学中的应用研究

通过微格演练应用于推铅球的教学实验后,得出微格演练可以使讲解示范与技术分析同步进行的结论,有利于学生掌握技术与技能,有利于提高学生的学习兴趣,有利于信息的传递与反馈,有利于提高教学质量.     

组合形体的解读和绘制方法

组合体的投影作图,一直是学生在学习画法几何和工程制图当中的一大问题。本文通过切割、组合等方式,并结合立体图使学生可形象、直观地掌握组合体的解读和绘制的方法。     

On the Maximal Disjoint Division in Riesz Spaces

TheRieszspaces,consideredinthispaper ,areal waysArchimedean .LetLbeaRieszspace .Foru∈L ,theprincipalidealandtheprincipalbandgeneratedbyuaredenotedbyId(u)andB(u)respectively .ForA L ,theidealandthebandgeneratedbyAaredenotedbyId(A)andB(A)respectively .Aset {ui:i∈I}ofnonzeromutuallydisjointelementsofLiscalledamaximaldis jointsystem[2 ] ifx⊥uiforalli∈Iimpliesx =0 (equiv alently ,theidealgeneratedby {ui:i∈I}isorderdenseinL) .AssumethatuiisaprojectionelementinL .ByPiwedenotetheorderp…     

初始点任意优化问题的广义摄动梯度投影算法

本讨论带不等式和等式约束优化问题，考虑到计算的误差因素，在搜索方向上进行摄动，提出了求解非线性规划问题的广义摄动梯度投影算法，其初始点可以任意选取，使在实际计算上容易实现。同时，证明了算法的全局收敛性。