Study on Automated Trust Negotiation Mechanism in EPC Network

无线射频识别（RadioFrequencyIdentification，RFID）结合其他通讯技术，可以即时地提供贴有RIFD标签产品的信息，利用这些信息可以追踪产品在整个供应链中运动的情况，从而提高了供应链的可视性，使供应链的管理更加高效。但要实现这些好处，供应链企业必须共享这些信息，同时供应链企业还需要知道在哪里可以找到这些信息。 EPCglobal标准组织提出了发现服务（DiscoveryServices，DS）来解决该问题，可以把发现服务看作是电子产品代码网络（ElectronicProductCodeNetwork，EPC网络）的一个受限的搜索引擎。授权用户能够使用EPC码向发现服...To improve the visibility of supply chain and make the supply chain management more effectively, combined with other communication technologies, RFID is used to track the movement of products attached with RFID tags in supply chain and provide products details. To realize these advantage,supply chain participants should share products information and the partners need to know where to find these i...学位：管理学硕士院系专业：管理学院管理科学系_管理科学与工程学号：1772007115071

远海风电柔性直流送端交流系统故障协调控制

为提升远海风电对称双极柔性直流送端交流系统单相接地故障和两相短路故障工况（第一类故障）下的功率输送能力，以及三相接地故障工况（第二类故障）的交流电压稳定性，提出海上换流站协调控制策略。首先分析了第一类故障的过电压和极间环流产生机理，以及第二类故障的交流电压失稳机理。在此基础上，提出了功率平衡控制策略和输出有功电流策略。第一类故障下定电压控制极采用限压策略，功率平衡控制策略抑制极间环流，增大定电压控制极的功率，减少了交流电压控制器响应时间，提升了功率输送能力。第二类故障工况下，定电压控制极切换为交流电流控制模式，定功率控制极的输出有功电流策略抑制电压相量幅值和相位变化，解决了交流电压失稳的问题。最后，基于PSCAD/EMTDC搭建远海风电柔性直流送出系统仿真模型，仿真结果验证了所提控制策略有效性

国际高等教育质量保障与评估发展趋势及其启示——基于11个国家(地区)高等教育质量保障体系的考察

自世界高等教育逐渐步入大众化、普及化阶段以来,世界各国(地区)在构建和完善高等教育质量保障体系方面投入了大量精力。对四大洲共11个国家(地区)高等教育质量保障的结构、立法、理念与原则以及质量评估的内容与方法等方面进行研究,并据此对我国新一轮本科教育评估工作提出一些建议:继续采用审核模式,发挥文化机制作用,引导高校形成质量改进文化;突出\"学生中心\"理念,坚持成效导向,注重学生学习体验以及学生参与;强调学校自评和后续整改,重视评估工具的开发与应用,建立持续改进的长效机制;重视大数据和信息技术应用,优化评估流程,提高评估信度、效度与效率;重视评估的顶层设计,不断优化外部质量保障结构,使院校评估与专业评估形成有机整体;进一步教育部高等教育教学评估中心委托课题“新一轮高校本科教育评估方案研制——高等教育质量保障国际比较”的研究成

Heavy metals contamination in fish from coral reef ecosystem and ecology risk evaluation

为研究海南珊瑚礁区重金属的污染现状,选择鱼类为污染指示物,测定珊瑚礁区的5种鱼体中Cr、Mn、Cu、zn、AS、Pb和Hg 7种重金属的含量,并采用单因子污染指数法(PI)对重金属的污染状况进行了风险评价。研究结果显示,不同鱼类对同种重金属元素的富集能力存在较大差异,同种鱼对不同重金属元素的富集能力也存在差异。珊瑚礁区鱼类重金属的污染程度由强到弱的顺序为:Cr>AS>Mn>Hg>zn>Cu>Pb;鱼类的鳃和内脏器官比肌肉更容易蓄积重金属。珊瑚礁区生物富集作用最明显的为Cr和AS。PI结果表明海南珊瑚礁区鱼体重金属Cr的污染严重,AS中度污染,其他重金属基本无污染或轻度污染。To study the pollution status quo of heavy metals in coral reef ecosystem in Hainan Island,concentrations of heavy metals including Cr,Mn,Cu,Zn,As,Pb,and Hg in wild fish were determined.Single factor pollution index(Pi) was employed to evaluate the heavy metal pollution level.The results showed that enriched degree of the heavy metals in fish can be ranked from high to low as Cr>As>Mn>Hg>Zn>Cu>Pb;heavy metals prefer to be accumulated in gill and viscera.Obvious bioaccumulation of Cr and As in fish of coral reef ecosystem was observed.Pi indicated that coral reef ecosystem in Hainan Island has been heavily polluted by Cr and moderately polluted by As.Other metals have shown no pollution or slight pollution.中国博士后科学基金(2012M510201); 中国科学院百人计划资助项目(2060299); 中国科学院南海海洋研究所知识创新工程领域前沿项目(50601-31); 王宽诚教育基金会对本工作的资

我国传染病微生态的预防发展趋势

我国传染病微生态的预防发展趋势范明远，向近敏，苏文金，郝维善，何明清，王世荣传染病的预防战略，传统观念仍局限于疫苗和药物两大主题。从微生态学（细胞或分子生态学）角度来考虑传染病的预防战略，是当今国际上生物医学的发展趋势。微生态学是边缘学科之一，根据其..

Dicarboxylate-controlled three Zn(II) coordination polymers incorporating flexible 1,2-bis(imidazol-1 '-yl)ethane ligand: Syntheses, structures, thermal stabilities and photoluminescent properties

通讯作者地址: Sun, D (通讯作者),Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Shandong, Peoples R China 地址: 1. Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Shandong, Peoples R China 2. Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 电子邮件地址: [email protected]; [email protected] mixed-ligand Zn(II) coordination polymers (CPs) of the formula {[Zn-2(bime)(2)(adiP)(2)]center dot(H2O)(5)}(n) (1), {[Zn(bime)(ipa)]center dot(H2O)3}(n) (2), {[Zn(bime)(tpa)]center dot(H2O)center dot(CH3OH)](n) (3) (bime = 1,2-bis(imidazol-1'-yl)ethane, H(2)adip = adipic acid, H(2)ipa = isophthalic acid and H(2)tpa = terephthalic acid) were synthesized. All CPs have been characterized by element analysis, powder X-ray diffraction (PXRD), IR and X-ray single-crystal diffraction. Complexes 1 and 2 exhibit similar wavy two-dimensional (2D) sheets with 4(4)-sql topology. Compared tot, complex 2 contains a larger window owing to the different conformation of bime ligand. In both 1 and 2, we observed 1D water chain filling in the 44-sql net. In 3, the bime acts as a bidentate ligand and the tpa adopts a mu(2)-eta(1),eta(1) coordinated mode which links the Zn(II) ions to form a 2D 6(3)-hcb net. The results suggest that the dicarboxylates play crucial roles in the formation of the different structures. In addition, the thermal stabilities and the photoluminescence properties of them were also investigated. (C) 2012 Elsevier B.V. All rights reserved.National Natural Science Foundation of China 20721001 MSTC 2007CB815301 Independent Innovation Foundation of Shandong University 2011GN030 Special Fund for Post-doctoral Innovation Program of Shandong Province 20110100

A novel one-dimensional mixed ligands silver(I) coordination polymer containing two different chains

通讯作者地址: Sun, D (通讯作者),Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Shandong, Peoples R China 地址: 1. Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Shandong, Peoples R China 2. Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Fujian, Peoples R China 电子邮件地址: [email protected]; [email protected] mixed-ligand coordination polymer (CP) of the formula {[Ag-3(bmimb)(2) (ndca)(1.5)]center dot H2O}(n) (1) (where bmimb = 1,4-bis(2-methylimidazol-1-ylmethyl)benzene and H(2)ndca = naphthalene-1,4-dicarboxylic acid) was synthesized by reaction of Ag2O and bmimb ligand with H(2)ndca under the ammoniacal condition. It has been structurally characterized by element analysis, IR and X-ray single-crystal diffraction. The bmimb acts as bidentate ligand, and the ndca ligand adopts two different coordination modes in 1, which are mu(4)-eta(1):eta(1):eta(1):eta(1) and mu(2)-eta(1):eta(0):eta(1):eta(0), respectively. Coordination of Ag(I) ions with bmimb and ndca ligands produces two different 1D chains, which is attributed to the different coordination modes of the ndca ligand, indicating the ndca ligand plays an important role in the formation of the diverse 1D chains. The complex 1 exhibits photoluminescent emission in the solid state at room temperature. (C) 2012 Elsevier B.V. All rights reserved.National Natural Science Foundation of China 21021061 21071118 MSTC 2007CB815301 Independent Innovation Foundation of Shandong University 2011GN030 Special Fund for Postdoctoral Innovation Program of Shandong Province 20110100

Six low-dimensional silver(I) coordination complexes derived from 2-aminobenzonitrile and carboxylates

通讯作者地址: Huang, RB (通讯作者),Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China 电子邮件地址: [email protected] new Ag(I) coordination complexes, [Ag(abn)(4-cba)](2) (1), [Ag(abn)(3-cba)](2) (2), [Ag(abn)(fba)](2) (3), [Ag(abn)(3-mba)](2) (4), [Ag(abn)(moba)](2) (5), [Ag(abn)(2)(4-mba)](n) (6), (abn = 2-aminobenzonitrile, 4-cbaH = 4-chlorobenzoic acid, 3-cbaH = 3-chlorobenzoic acid, Hfba = 3-fluorobenzoic acid, 3-mbaH = 3-methylbenzoic acid, Hmoba = 2-methoxybenzoic acid and 4-mbaH = 4-methylbenzoic acid), have been synthesized and characterized by elemental analysis, IR spectra and single crystal X-ray diffraction. Complexes 1-4 are similar discrete binuclear Ag(I) motif containing monodentate mu(1)-N-amino abn and mu(2)-eta(1):eta(1) carboxylates. The complementary N-amino-H center dot center dot center dot N-cyano hydrogen bonds link the binuclear motifs into 1D chain which is further extended into 2D supramolecular sheet by N-amino-H center dot center dot center dot O-carboxyl hydrogen bonds. Notably, the electronic effect of substituents in 1-4 has deeply influence on the Ag center dot center dot center dot Ag interaction. Complex 5 is also a discrete binuclear Ag(I) motif but contains a monodentate mu(1)-N-cyano abn ligand. The 1D chain was observed in complex 6 where two different abn ligands with mu(1)-N-cyano and mu(2)-N-cyano, N-amino coordination modes coexist and 4-mba is a chelating mu(1)-eta(1):eta(1) ligand. The results show that the different structures are predominantly attributed to the various ancillary carboxylate ligands and diverse coordination modes of abn ligand. Moreover, the emissive behaviors of them are discussed. (C) 2012 Elsevier B.V. All rights reserved.National Natural Science Foundation of China 21021061 21071118 MSTC 2007CB81530