自然法传统与西方权利思想的演进

自然法传统与西方权利思想的产生及发展有着密切联系。古希腊的自然主义观念与人文理念是自然法与西方权利思想的共同理论渊源。伴随自然法理论的生成,与权利相关的各种理念也随之产生,当自然法思想发展到古典自然法阶段时,其已经成为了一种关于权利的思想学说,而且开始引导着近代西方权利思想的发展趋向。进入20世纪之后,在复兴的自然法理论的主导下,权利思想仍然得到发展并显示出强大的理论生命力,从而继续居于西方政治法律领域中的主流理论地位。     

Wavelet fractal character of overlapping signal

A new method based on the combining of the wavelet theory with the fractal theory and named wavelet fractal peak position method (WFPPM) is introduced to extract the number of the components and the relevant peak positions from overlapping signals in chemistry .The overlapping signal is first transformed into continuous wavelet transform value of time domain in certain dilation range via continuous wavelet transform (CWT),and then changed into capacity dimensions (Dc),The number of the components and the relevant positions of overlapping peaks can be identified easily according to the change of Dc.An investigation concerning the influence of different dilation ranges on the peak positions extracted by WFPPM is also provided .Studies show that the WFPPM is an efficient tool for extracting the peak positions and identifying the number of peaks from unresoloved signals,even when this kind of overlapping is significantly serious,Relative errors of lless than 1.0% in peak positions are found when WFPPM is used in the processing of the cadmium (Ⅱ)-indium(Ⅲ) mixture system .The analytical results demonstrate that the desired peak positions can be extracted conveniently ,accurately and rapidly from an unresoled signal via WFPPM,Tremendous developing and applications based on currently reported WFPPM in extracting overlapping signals would be expected in the near future.     

Attribute level lineage in uncertain data with dependencies

In uncertain data management, lineages are often used for probability computation of result tuples. However, most of existing works focus on tuple level lineage, which results in imprecise data derivation. Besides, correlations among attributes cannot be captured. In this paper, for base tuples with multiple uncertain attributes, we define attribute level annotation to annotate each attribute. Utilizing these annotations to generate lineages of result tuples can realize more precise derivation. Simultaneously, they can be used for dependency graph construction. Utilizing dependency graph, we can represent not only constraints on schemas but also correlations among attributes. Combining the dependency graph and attribute level lineage, we can correctly compute probabilities of result tuples and precisely derivate data. In experiments, comparing lineage on tuple level and attribute level, it shows that our method has advantages on derivation precision and storage cost.     

Li6.75La3Zr1.75Nb0.25O12增强的Cu基微振动敏感型高阻尼复合材料的制备和阻尼性能研究

基于Li_(6.75)La_3Zr_(1.75)Nb_(0.25)O_(12)(LLZNO)陶瓷材料的近室温高阻尼特性并与金属Cu复合,设计和制备了高阻尼LLZNO/Cu复合材料,并采用多功能内耗仪和显微硬度测量仪对复合材料的阻尼性能和力学性能进行了评价.研究结果表明:与相同制备工艺的纯Cu基体材料相比,LLZNO/Cu复合材料的阻尼性能和硬度值均有显著提高,其中,陶瓷颗粒质量分数为30%的LLZNO/Cu复合材料的阻尼峰值高达0.050,比纯Cu阻尼值提高近25倍,硬度值也从纯Cu试样的59MPa提高到近91MPa.进一步的阻尼-振幅依赖性测试表明,即使应变振幅降低到10×10~(-6),LLZNO/Cu复合材料的阻尼性能也基本保持不变,表现出典型的微振动敏感特性,其机制起因于应力作用下LLZNO陶瓷内高浓度Li离子迁移扩散诱导的能量耗散.     

虾青素的化学合成法概述

虾青素是萜类化合物β-胡萝卜素的一种,广泛存在于自然界中,具有较强的抗氧化活性和多种生理活性,应用于诸多领域.综述了虾青素的几种化学合成方法,再展望了虾青素的发展前景.     

Synthesis of Mesoporous Silica Nanoparticles with Tunable Shape and Size

The structural and morphological properties of mesoporous silica nanoparticles( MSNs) have dramatical influence on their in vivo biological behaviors,and thereby synthesis of MSNs with well-defined shape and size has recently attracted much more attention in the biomedical field. The synthesis of MSNs with controllable size and shape was presented by controlling the reaction temperature and the concentration of templating agent(cetyltrimethylammonium bromide,CTAB). The results indicated that MSNs were larger in particle size and more round in shape with increasing of the reaction temperature,but their particle size and dispersivity became smaller and poorer as CTAB concentration increased. Therefore,the particle size and shape of MSNs can be tuned by using the optimal synthesis conditions for specific biomedical applications.     

混沌免疫混合算法参数自适应调整的优化设计

为提高免疫算法的求解性能,在免疫克隆选择算法中融入了混沌优化操作.分析了抗体群选择概率的重要性并给出其变化的计算式,采用抗体群的连续3代平均适应度变化率以自适应地调节抗体选择概率参数值.给出了混沌免疫混合算法参数自适应调整的优化设计的具体步骤,运用混沌免疫混合算法参数自适应调整的优化方法、免疫克隆选择算法以及其他文献方法对起重机结构主梁截面优化设计.结果表明:混沌免疫混合算法参数自适应调整的优化方法具有自适应能力强、计算效率高及优化设计精度高等优点.     

室温原子转移自由基聚合（RT—ATRP）在合成嵌段共聚物中的应用研究进展

室温原子转移自由基聚合较普通自由基聚合有多方面的优点。综述了室温原子转移自由基聚合在合成油溶性、水溶性及两亲嵌段共聚物方面的研究和应用,对室温原子转移自由基聚合及其在合成嵌段共聚物的应用作了展望。     

利用基质辅助激光解吸电离质谱成像技术研究斑马鱼响应富营养化污染水质内源性脂质分子变化

斑马鱼作为一种常见的模式物种,体内易富集水中污染物,常用于农药、有机物等污染水质监测与评估,但其响应富营养化水质污染的分子机制尚不明确.基质辅助激光解吸电离质谱成像(matrix assisted laser desorption ionization mass spec-trometry imaging,MALDI-...     

赣南历史军事聚落空间影响演化

以宋元、明清时期的赣南历史军事聚落为研究对象,基于权重核密度估计方法,分析了历史时期的赣南地区军事聚落的空间影响格局演化特征,探讨了其影响因素,分析了军事聚落的空间影响格局对现代城乡聚落发展的影响.研究表明赣南历史军事聚落及其空间影响格局演化呈现以下特征:军事聚落层级宋元代为三级、明代为四级和清代为五级;在历史时期经历了三种空间影响格局:"多核心"与带状空间影响模式;向外扩散的"双核心"与带状空间影响模式;向外扩散的"轴"状、带状与"核心"状空间影响模式.历史军事聚落的空间格局对现代城乡聚落发展的影响表现在空间影响"轴"可以成为赣州城市发展主轴,空间影响环绕带上的城乡发展差异大,应加强城乡统筹和重点镇发展,空间影响副中心可以作为现代赣南次中心城市发展,历史军事聚落应作为历史城镇、历史乡村聚落进行重点保护.研究表明采用权重核密度估计法可以较好地表现历史军事聚落的空间影响,方便历史军事聚落演化不同阶段的对比分析.