岩石爆破性稳健模糊分级新方法的探讨

作者在对国内外岩石爆破性分级分析研究的基础上,首次将稳健统计学应用于岩石爆破性分级理论中,并将稳健统计学与模糊理论有机地结合起来,提出了一种科学、可靠的分级方法——稳健模糊分级法。     

基于探测查询的Deep Web实体识别

目前,Web上存在很多Deep Web网站,而各个网站的数据表现形式有很大的差别.因此要集成这些网站就需要正确抽取其中的数据,并将其中表示同一实体的数据合并.该文提出了一种基于探测查询的方法来自动完成页面的数据抽取及实体识别工作,该方法通过提交查询可以在提取数据的同时确定实体的各个属性,根据实体的各个属性进行实体识别.实验表明,该方法具有较高的实体识别准确率.     

The role of sediment resuspension duration in release of PAHs

Polycyclic aromatic hydrocarbons （PAHs） are ubiquitous environmental pollutants. Due to their low water solubility and high hydrophobicity, PAHs are rapidly sorbed onto particles and subsequently deposit in sediments once introduced into aquatic environment. In such a way, sediments become a huge sink for PAHs. During sediment resuspension, the potential exists for PAHs to be released from sediments into water. Sediment resuspension plays an important role in the transportation and fate of PAHs in the aquatic environment. In this study, release behavior of PAHs on Yangtze River sediment during resuspension was investigated using a particle entrainment simulator （PES）. The role of resuspension duration on release of 16 PAHs was measured by resuspending sediment for 12 h at 0.2 and 0.5N/m^2, respectively. Results indicated that PAH concentrations in TSS increase over time with more increase of phenanthrene and 4-ring PAHs. Comparing with 0.2 N/m2 （30%）, TPAHs concentrations in TSS demonstrated remarkable increase during 0.5 N/m2 resuspension （37%）. Dissolved PAH concentrations increased throughout the duration with more increase of 2-3 ring PAHs （50%-88%）. Dissolved PAH concentrations showed remarkable increase during 0.5 N/m^2 resuspension （50%）. Moreover, PAH concentrations in overlying water throughout the duration of resuspension were higher than toxic effects threshold values in drinking water developed by WHO, which may cause toxic effect on ecosystem.     

Applications of electrospun nanofibers

Polymeric nanofiber non-woven materials produced by electrospinning have extremely high surface-to-mass （or volume） ratio and a porous structure with excellent pore-interconnectivity. These characteristics plus the functionalities and surface chemistry of the polymer itself impart the nanofibers with desirable properties for a range of advanced applications. This review summarizes the recent progress in electrospun nanofibers, with an emphasis on their applications.     

Editor's note

Yoshiyuki （Yoshi） Tatsumi is currently the Program Director of the Institute for Research on Earth Evolution of Japan Agency for Marine-Earth Science and Technology （IFREE/JAMSTEC）. He received a BSc in Geology with honors （1978） and an MS （1980） from Kyoto University, and a PhD in Earth Sciences from the University of Tokyo in 1983. He held research/visiting positions at the University of Manchester, UK （1983--1984） and the University of Tasmania, Australia （1989--1990） while holding Assistant and Associate Professorships at Kyoto University （1983--1996）. He has been full Professor of School of Earth Sciences, Institute of Geothermal Sciences at the Kyoto University, and Ocean Research Institute at the University of Tokyo since 1996. Yoshi is a world-renowned igneous petrologist and authority on magma generation and evolution associated with subduction zones. He uses magmatism as a tool to understand the evolution of the solid Earth. He has published over 120 research papers in leading journals such as Nature, Science, Geology, Earth and Planetary Science Letters, Journal of Geophysical Research, Journal of Petrology, Contributions to Petrology and Mineralogy, Chemical Geology, etc. Every igneous petrologist today, in particular those who study the petro- genesis of subduction-zone igneous rocks, is impressed with and influenced by Yoshi＇s classic book 《Subduction Zone Magmatism》 （Tatsumi Y. and Eggins S., Blackwell Publishing, 1995, 1--224）, which has been widely cited in research papers and used in classrooms. His thinkina goes bevond magmatism.     

思想政治教育的中国优秀传统文化渊源探究

思想政治教育在全面推进青少年的素质教育中具有非常重要的地位.思想政治教育同中国传统文化间有密切的联系.探究思想政治教育中的传统文化因素,既有利于进一步加强当前的思想政治教育,全面推进青少年的素质教育,又有利于中华优秀传统文化的发扬光大.     

Register Allocation Algorithm for High-Level Circuit Synthesis for Improved Testability

Register allocation in high-level circuit synthesis is important not only for reducing area, delay, and power overheads, but also for improving the testability of the synthesized circuits. This paper presents an improved register allocation algorithm that improves the testability called weighted graph-based balanced register allocation for high-level circuit synthesis. The controllability and observability of the registers and the self-loop elimination are analyzed to form a weighted conflict graph, where the weight of the edge between two nodes denotes the tendency of the two variables to share the same register. Then the modified desaturation algorithm is used to dynamically modify the weights to obtain a final balanced register allocation which improves the testability of the synthesized circuits. Tests on some benchmarks show that the algorithm gives a higher fault coverage than other algorithms with less area overhead and even less time delay.     

动物营养与饲料学实验教学改革研究

根据人才培养的要求,从动物营养与饲料学实验教学内容的编排、授课的形式、学生能力的培养与实验成绩的考评等方面对该实验课的教学进行了初步的研究与探讨．     

动物营养实验室的管理研究

动物营养实验室不仅是专业实践的场所.更应成为科学研究和新技术推广的基地.通过分析动物营养实验室管理存在的缺点弊端,就如何进行科学化管理提出几点建议.以优化和提升动物营养实验室的管理水平.     

Banach空间一类混合单调集值算子不动点定理及其应用

利用锥理论和混合单调迭代序列技术,在不要求任何紧性和连续性的情况下,证明了Banach空间中的一类混合单调集值算子不动点定理,并应用到一阶集值方程中,推广了某些已知结果．