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Values of macular ganglion cell-inner plexiform layer and 10-2 visual field measurements in detecting and evaluating glaucoma
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作者 Hai-Jian Hu Ping Li +7 位作者 Bin Tong Yu-Lian Pang Hong-Dou Luo Fei-Fei Wang Chan Xiong Yu-Lin Yu Hai He Xu Zhang 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2024年第5期852-860,共9页
AIM:To assess the performance of macular ganglion cell-inner plexiform layer thickness(mGCIPLT)and 10-2 visual field(VF)parameters in detecting early glaucoma and evaluating the severity of advanced glaucoma.METHODS:T... AIM:To assess the performance of macular ganglion cell-inner plexiform layer thickness(mGCIPLT)and 10-2 visual field(VF)parameters in detecting early glaucoma and evaluating the severity of advanced glaucoma.METHODS:Totally 127 eyes from 89 participants(36 eyes of 19 healthy participants,45 eyes of 31 early glaucoma patients and 46 eyes of 39 advanced glaucoma patients)were included.The relationships between the optical coherence tomography(OCT)-derived parameters and VF sensitivity were determined.Patients with early glaucoma were divided into eyes with or without central 10°of the VF damages(CVFDs),and the diagnostic performances of OCT-derived parameters were assessed.RESULTS:In early glaucoma,the mGCIPLT was significantly correlated with 10-2 VF pattern standard deviation(PSD;with average mGCIPLT:β=-0.046,95%CI,-0.067 to-0.024,P<0.001).In advanced glaucoma,the mGCIPLT was related to the 24-2 VF mean deviation(MD;with average mGCIPLT:β=0.397,95%CI,0.199 to 0.595,P<0.001),10-2 VF MD(with average mGCIPLT:β=0.762,95%CI,0.485 to 1.038,P<0.001)and 24-2 VF PSD(with average mGCIPLT:β=0.244,95%CI,0.124 to 0.364,P<0.001).Except for the minimum and superotemporal mGCIPLT,the decrease of mGCIPLT in early glaucomatous eyes with CVFDs was more severe than that of early glaucomatous eyes without CVFDs.The area under the curve(AUC)of the average mGCIPLT(AUC=0.949,95%CI,0.868 to 0.982)was greater than that of the average circumpapillary retinal nerve fiber layer thickness(cpRNFLT;AUC=0.827,95%CI,0.674 to 0.918)and rim area(AUC=0.799,95%CI,0.610 to 0.907)in early glaucomatous eyes with CVFDs versus normal eyes.CONCLUSION:The 10-2 VF and mGCIPLT parameters are complementary to 24-2 VF,cpRNFLT and ONH parameters,especially in detecting early glaucoma with CVFDs and evaluating the severity of advanced glaucoma in group level. 展开更多
关键词 10-2 visual field ganglion cell-inner plexiform layer retinal nerve fiber layer thickness GLAUCOMA
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Dual-function protective layer for highly reversible Zn anode
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作者 Jiaming Li Hanhao Liang +6 位作者 Yini Long Xiao Yu Jiaqi Li Nan Li Junyi Han Jianglin Wang Zhanhong Yang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第11期12-23,共12页
The thermodynamic instability of zinc anodes in aqueous electrolytes leads to issues such as corrosion,hydrogen evolution reactions(HER), and dendrite growth, severely hindering the practical application of zinc-based... The thermodynamic instability of zinc anodes in aqueous electrolytes leads to issues such as corrosion,hydrogen evolution reactions(HER), and dendrite growth, severely hindering the practical application of zinc-based aqueous energy storage devices. To address these challenges, this work proposes a dualfunction zinc anode protective layer, composed of Zn-Al-In layered double oxides(ILDO) by rationally designing Zn-Al layered double hydroxides(Zn-Al LDHs) for the first time. Differing from previous works on the LDHs coatings, firstly, the ILDO layer accelerates zinc-ion desolvation and also captures and anchors SO_(4)^(2-). Secondly, the in-situ formation of the Zn-In alloy phase effectively lowers the nucleation energy barrier, thereby regulating zinc nucleation. Consequently, the zinc anode with the ILDO protective layer demonstrates long-term stability exceeding 1900 h and low voltage hysteresis of 7.5 m V at 0.5 m A cm^(-2) and 0.5 m A h cm^(-2). Additionally, it significantly enhances the rate capability and cycling performance of Zn@ILDO//MnO_(2) full batteries and Zn@ILDO//activated carbon zinc-ion hybrid capacitors.This simple and effective dual-function protective layer strategy offers a promising approach for achieving high-performance zinc-ion batteries. 展开更多
关键词 Protection layer Zn-Al-In layered double oxide Captures and anchors SO_(4)^(2-) Zn-In alloy phase Zn metal anode
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Effect of nitrite intercalated Mg-Al layered double hydroxides on mortar durability under Cl−and SO_(4)^(2-) coexisting environment 被引量:5
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作者 WANG Xu-hui XU Jin-xia TAN Qi-ping 《Journal of Central South University》 SCIE EI CAS CSCD 2022年第2期546-560,共15页
The aim of this paper is to investigate the effect of nitrite intercalated Mg-Al layered double hydroxides(Mg-Al LDH-NO_(2))on mortar durability under the coexisting environment of Cl−and SO_(4)^(2-).Cl−and SO_(4)^(2-... The aim of this paper is to investigate the effect of nitrite intercalated Mg-Al layered double hydroxides(Mg-Al LDH-NO_(2))on mortar durability under the coexisting environment of Cl−and SO_(4)^(2-).Cl−and SO_(4)^(2-) binding properties of Mg-Al LDH-NO_(2) in simulated concrete pore solutions,Cl−and SO_(4)^(2-) diffusion properties of mortars with Mg-Al LDHNO 2 were examined.The steel corrosion and resistance of mortar against SO_(4)^(2-) attack were also evaluated.The results indicate that Mg-Al LDH-NO_(2) can effectively adsorb the Cl−and SO_(4)^(2-) in simulated concrete pore solution,and inhibit the diffusion of Cl−and SO_(4)^(2-) into cement mortars.The presence of SO_(4)^(2-) can greatly affect the uptake amount of Cl−,and there is a coupled effect of Cl−and SO_(4)^(2-) on their penetration into mortar specimens.In addition,Mg-Al LDH-NO_(2) can greatly upgrade the resistance of mortars against SO_(4)^(2-) attack and well prevent the steel from corrosion.However,Cl−will aggravate the SO_(4)^(2-) attack and SO_(4)^(2-) can initially decrease and then increase the steel corrosion. 展开更多
关键词 layered double hydroxides mortar durability SO_(4)^(2-)attack steel corrosion Cl−and SO_(4)^(2-)coexisting environment
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Desorption of Cl^(-) from Mg-Al layered double hydroxide intercalated with Cl^(-) using CO_(2) gas and water 被引量:2
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作者 Tomohito Kameda Hiroki Uchida +5 位作者 Shogo Kumagai Yuko Saito Keiichi Mizushina Ichirou Itou Tianye Han Toshiaki Yoshioka 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2021年第1期131-134,共4页
Mg-Al layered double hydroxide intercalated with CO_(3)^(2-)(CO_(3)·Mg-Al LDH) is effective for treating HCl exhaust gas.HCl reacts with CO_(3)^(2-) in CO_(3)·Mg-Al LDH, resulting in the formation of Cl·... Mg-Al layered double hydroxide intercalated with CO_(3)^(2-)(CO_(3)·Mg-Al LDH) is effective for treating HCl exhaust gas.HCl reacts with CO_(3)^(2-) in CO_(3)·Mg-Al LDH, resulting in the formation of Cl·Mg-Al LDH.We propose that CO_(2) can be used for the desorption of Cl^(-)from Cl·Mg-Al LDH to regenerate CO_(3)·Mg-Al LDH.Herein,we studied the desorption of a from CI-Mg-Al LDH by adding water to Cl·Mg-Al LDH and blowing CO_(2) into it.We also analyzed the effects of temperature and water addition speed on the desorption of CI^(-)from Cl·Mg-Al LDH.Our results show that the added water adhered to CI·Mg-Al LDH and that CO_(2) in the gaseous phase was dissolved in this adhered water,thus generating CO_(3)^(2-).Therefore,anion exchange occurred between CO_(3)^(2-) and Cl^(-)in the Cl·Mg-Al LDH,thus desorbing Cl^(-). 展开更多
关键词 Mg-Al layered double hydroxide CO_(2)gas Cl^(-)desorption Semi-dry method
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Promoting surface reconstruction of NiFe layered double hydroxides via intercalating[Cr(C_(2)O_(4))_(3)]^(3-)for enhanced oxygen evolution 被引量:2
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作者 Yujie Wu Minglei Song +8 位作者 Yu-Cheng Huang Chung-Li Dong Yingying Li Yuxuan Lu Bo Zhou Dongdong Wang Jianfeng Jia Shuangyin Wang Yanyong Wang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2022年第11期140-148,I0005,共10页
Rationally manipulating surface reconstruction of catalysts for water oxidation,inducing formation and dynamic accumulation of catalytically active centers still face numerous challenges.Herein,the introduction of[Cr(... Rationally manipulating surface reconstruction of catalysts for water oxidation,inducing formation and dynamic accumulation of catalytically active centers still face numerous challenges.Herein,the introduction of[Cr(C_(2)O_(4))_(3)]^(3-)into NiFe LDHs by intercalation engineering to promote surface reconstruction achieves an advanced oxygen evolution reaction(OER)activity.In view of the weak electronegativity of Cr^(3+) in[Cr(C_(2)O_(4))_(3)]^(3-),the intercalation of[Cr(C_(2)O_(4))_(3)]^(3-)is expected to result in an electron-rich structure of Fe sites in NiFe LDHs,and higher valence state of Ni can be formed with the charge transfer between Fe and Ni.The optimized electronic structure of NiFe-[Cr(C_(2)O_(4))_(3)]^(3-)-LDHs with more active Ni^(3+) species and the expedited dynamic generation of Ni^(3+) (Fe)OOH phase during the OER process contributed to its excellent catalytic property,revealed by in situ X-ray absorption spectroscopy,Raman spectroscopy,and quasi-in situ X-ray photoelectron spectroscopy.With the modulated electronic structure of metal sites,NiFe-[Cr(C_(2)O_(4))_(3)]^(3-)-LDHs exhibited promoted OER property with a lower overpotential of 236 mV at the current density of 10 mA cm^(-2).This work illustrates the intercalation of conjugated anion to dynamically construct desired Ni^(3+) sites with the optimal electronic environment for improved OER electrocatalysis. 展开更多
关键词 NiFe layered double hydroxides [Cr(C_(2)O_(4))_(3)]^(3-)intercalation Dynamic restructuring Operando spectroscopies Oxygen evolution reaction
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United States Healthcare Data Breaches: Insights for NIST SP 800-66 Revision 2 from a Review of the NIST SP 800-66 Revision 1
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作者 Mohammed Mohammed Raoof 《Journal of Information Security》 2024年第2期232-244,共13页
Healthcare security and privacy breaches are occurring in the United States (US), and increased substantially during the pandemic. This paper reviews the National Institute of Standards and Technology (NIST) publicati... Healthcare security and privacy breaches are occurring in the United States (US), and increased substantially during the pandemic. This paper reviews the National Institute of Standards and Technology (NIST) publication base as an effective solution. The NIST Special Publication 800-66 Revision 1 was an essential standard in US healthcare, which was withdrawn in February 2024 and superseded by SP 800-66 Revision 2. This review investigates the academic papers concerning the application of the NIST SP 800-66 Revision 1 standard in the US healthcare literature. A systematic review method was used in this study to determine current knowledge gaps of the SP 800-66 Revision 1. Some limitations were employed in the search to enforce validity. A total of eleven articles were found eligible for the study. Consequently, this study suggests the necessity for additional academic papers pertaining to SP 800-66 Revision 2 in the US healthcare literature. In turn, it will enhance awareness of safeguarding electronic protected health information (ePHI), help to mitigate potential future risks, and eventually reduce breaches. 展开更多
关键词 SP 800-66 Revision 1 SP 800-66 Revision 2 HIPAA Compliance Security Breaches Risk management Framework (RMF) Internet of Things (IoT) Artificial Intelligence (AI)
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Direct Synthesis of Al_2O_3-modified Li(Ni_(0.5)Co_(0.2)Mn_(0.3))O_2 Cathode Materials for Lithium Ion Batteries 被引量:1
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作者 王启岁 ZHANG Changchun +2 位作者 XING Junlong YANG Maoping XIE Jia 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2018年第1期97-101,共5页
To improve the cyclic stability at high temperature and thermal stability, the spherical Al2O3-modified Li(Ni0.5Co0.2Mn0.3)O2 was synthesized by a modified co-precipitation method, and the physical and electrochemic... To improve the cyclic stability at high temperature and thermal stability, the spherical Al2O3-modified Li(Ni0.5Co0.2Mn0.3)O2 was synthesized by a modified co-precipitation method, and the physical and electrochemical properties were studied. The TEM images showed that Li(Ni0.5Co0.2Mn0.3)O2 was modified successfully with nano-Al2O3. The discharge capacity retention of Al2O3-modified Li(Ni0.5Co0.2Mn0.3)O2 maintained about 99% after 200 cycles at high temperature(55 ℃), while that of the bare one was only 86%. Also, unlike bare Li(Ni0.5Co0.2Mn0.3)O2, the Al2O3-modified material cathode exhibited good thermal stability. 展开更多
关键词 modified precipitation method layered cathode materials Al2O3- modified cyclic stability DSC
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One-dimensional Zigzag Chain Composed of HgI_2 Unit and 2,5-Bis(4-pyridyl)-1,3,4-thiadiazole:[HgI_2(C_(12)H_8N_4S)] 被引量:1
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作者 CHEN Li-Juan MENG Ze-Rong ZHANG Quan-Zheng WU Xiao-Yuan LU Can-Zhong 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2006年第10期1189-1192,共4页
The title compound, [HgI2(C12H8N4S)], has been synthesized and characterized by single-crystal X-ray diffraction analysis. It crystallizes in monoclinic, space group P21/n with a = 14.086(2), b = 6.0365(6), c = ... The title compound, [HgI2(C12H8N4S)], has been synthesized and characterized by single-crystal X-ray diffraction analysis. It crystallizes in monoclinic, space group P21/n with a = 14.086(2), b = 6.0365(6), c = 20.286(2)°A,β= 108.818(5)°, V = 1632.7(3)°A^3, Mr = 694.67, Z = 4, D, = 2.826 g/cm^3,μ= 13.331 mm^-1, F(000) = 1240, S = 1.108, the final R = 0.0438 and wR = 0.0934 for 3085 observed reflections (I〉 2σ(I)). The Hg(Ⅱ) atom is coordinated by two 2,5-bis(4-pyridyl)-1,3,4-thiadiazole (L) molecules and two iodine anions in a distorted tetrahedral coordination geometry. Mercury atoms are linked by the organic ligands to form a one-dimensional zigzag chain. It is noteworthy that such 1D zigzag chains are extended into a two-dimensional double layer framework through I…I interactions 展开更多
关键词 2 5-bis(4-pyridyl)-1 3 4-thiadiazole mercury(Ⅱ) complex 2D double layer
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Comparison of electrochemical properties of atmospheric pressure plasma coatings for Al_2O_3-3TiO_2 and CoNiCrAlY in sea water
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作者 Seong-jong KIM Seong-kweon KIM Jae-cheul PARK 《中国有色金属学会会刊:英文版》 CSCD 2012年第S3期745-752,共8页
To improve the durability of underwater rotating products,the corrosion characteristics in harsh marine environment were evaluated through various electrochemical experiments on the Al2O3-3TiO2 and CoNiCrAlY coating l... To improve the durability of underwater rotating products,the corrosion characteristics in harsh marine environment were evaluated through various electrochemical experiments on the Al2O3-3TiO2 and CoNiCrAlY coating layers by atmospheric pressure plasma spray coating process.By evaluating the corrosion resistance of these materials,their applicability to environmentally friendly power generation equipment such as blades of tidal current turbines was examined.According to the Tafel analysis for micro-areas including the coating layer,the coating/metal interlayer and the base metal,the Al2O3-3TiO2 coating layer and the CoNiCrAlY coating layer show markedly lower corrosion current density than the base metal.The corrosion current density of the CoNiCrAlY coating layer (9.75316×10-8A/cm2) is about 1.6 times more than that of the Al2O3-3TiO2 coating layer (6.13139×10-8A/cm2). 展开更多
关键词 Al2O3-3TiO2 COATING layer CONICRALY COATING layer UNDERWATER ROTATING products marine environment corrosion characteristics atmospheric pressure plasma SPRAY
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Synthesis and Crystal Structure of 1,4-Bis-(benztriazol-1-ylmethyl)-2,3,5,6-tetramethylbenzene
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作者 CAI Yue-Peng HE Guang-Ping +3 位作者 CAI Yi ZHANG Chi SU Cheng-Yong KANG Bei-Sheng 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第3期279-282,共4页
The title compound 1,4-bis(benztriazol-1-ylmethyl)-2,4,5,6-trimethylbenzene crys- tallizes in the monoclinic system, space group Pbca with a = 9.842(5), b = 9.455(5), c = 22.165(12) ?, V = 2062.6(18) ?3, Dc = 1.277 ... The title compound 1,4-bis(benztriazol-1-ylmethyl)-2,4,5,6-trimethylbenzene crys- tallizes in the monoclinic system, space group Pbca with a = 9.842(5), b = 9.455(5), c = 22.165(12) ?, V = 2062.6(18) ?3, Dc = 1.277 g/cm3, Z = 4, C24H24N6, Mr = 396.49, μ(MoKa) = 0.079 mm-1 and F(000) = 840. The structure was refined to R = 0.0662 and wR = 0.1891 for 1163 observed reflections (I > 2σ(I)). The title molecule has trans-conformation about the central phenyl ring. The zigzag-like molecules are connected by face-to-face π…π stacking to form an infinite 2D layer. 展开更多
关键词 bis(benztriazol-1-ylmethyl)-2 4 5 6-trimethylbenzene synthesis crystal structure face-to-faceπ…πinteraction 2D layer
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Nondoped-type White Organic Light-Emitting Diode Using Star-Shaped Hexafluorenylbenzene as an Energy Transfer Layer
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作者 Jun-sheng Yu Tao Ma +2 位作者 Shuang-ling Lou Ya-dong Jiang Qing Zhang 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 北大核心 2008年第5期500-504,共5页
White organic light-emitting diodes (WOLEDs) with a structure of indium-tin-oxide (ITO)/N,N'-bis- (1-naphthyl)-N,N'-diphenyl- (1, 1'-biphenyl)-4,4'-diamine (NPB)/1,2,3,4,5,6-hexakis(9,9-diethyl-9H-fluor... White organic light-emitting diodes (WOLEDs) with a structure of indium-tin-oxide (ITO)/N,N'-bis- (1-naphthyl)-N,N'-diphenyl- (1, 1'-biphenyl)-4,4'-diamine (NPB)/1,2,3,4,5,6-hexakis(9,9-diethyl-9H-fluoren-2- yl)benzene (HKEthFLYPh)/5,6,11,12-tetraphenylnaphtacene (rubrene)/tris(8-hydroxyquinoline) aluminum (Alq3)/Mg:Ag were fabricated by vacuum deposition method, in which a novel star-shaped hexafluorenyl- benzene HKEthFLYPh was used as an energy transfer layer, and an ultrathin layer of rubrene was inserted between HKEthFLYPh and Alq3 layers as a yellow light-emitting layer instead of using a time-consuming doping process. A fairly pure WOLED with Commissions Internationale De L'Eclairage (CIE) coordinates of (0.32, 0.33) was obtained when the thickness of rubrene was 0.3 nm, and the spectrum was insensitive to the applied voltage. The device yielded a maximum luminance of 4816 cd/m2 at 18 V. 展开更多
关键词 White organic light-emitting diode diethyl-9H-fluoren-2-yl)benzene Energy transfer Star-shaped hexafluorenylbenzene 1 2 3 4 5 6-hexakis(9 9- Ultrathin layer
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THE 2ND INTERNATIONAL CONFERENCE ON GALLSTONES: CAUSES AND MANAGEMENT, MARCH 19-22, 1995, TEL AVIV HILTON, ISRAEL
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《Chinese Medical Journal》 SCIE CAS CSCD 1994年第5期32-32,共1页
Presidents: T. Gilat (Israel), H. Fromm (USA). Plenary sessions. Epidemiology and natural history;pathogenesis; clinical aspects; treatment of gallbladder stones;treatment of biliary tract stones; future prospects.Re... Presidents: T. Gilat (Israel), H. Fromm (USA). Plenary sessions. Epidemiology and natural history;pathogenesis; clinical aspects; treatment of gallbladder stones;treatment of biliary tract stones; future prospects.Research workshops. Modulation of biliary lipid composition, cholesterol complexes in bile, nucleation and crystallization of cholesterol, biomineralization and stone formation, lithogenic events in the gallbladder. Poster sessions information. Gallstone conference secretariat, Peltours-Te’um Congress Organisers, P.O.B. 8388, Jerusalem 91082, Israel. Fax: (972 2) 637572, Tel: (972 2) 617402 展开更多
关键词 TEL AVIV HILTON THE 2ND INTERNATIONAL CONFERENCE ON GALLSTONES ND ISRAEL MARCH 19-22 CAUSES AND management
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基于SNMP协议的网络拓扑发现算法 被引量:9
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作者 邓泽林 张立芳 +1 位作者 刘翌南 傅明 《长沙理工大学学报(自然科学版)》 CAS 2007年第4期68-72,共5页
网络拓扑发现对于现代网络管理是一个重要的课题,尤其是第2层网络拓扑发现是一个难题.针对这一难题,基于大多数网络设备都支持的SNMP协议,提出了一个快捷、高效的算法,并对该算法进行了详细的描述,用该算法进行了真实环境的测试,测试结... 网络拓扑发现对于现代网络管理是一个重要的课题,尤其是第2层网络拓扑发现是一个难题.针对这一难题,基于大多数网络设备都支持的SNMP协议,提出了一个快捷、高效的算法,并对该算法进行了详细的描述,用该算法进行了真实环境的测试,测试结果和真实网络情况完全吻合,说明了此算法是一个有效的拓扑发现算法. 展开更多
关键词 网络 拓扑发现 简单网络管理协议 2
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以精细化管理推动高职院校二级教学管理模式建设 被引量:10
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作者 蒋新革 梁才 牛东育 《成都航空职业技术学院学报》 2010年第3期5-7,共3页
以开展教学工作的精细化管理为切入点,实施划分职责、明细流程、规范标准等措施,提升高职院校教学管理工作绩效。
关键词 精细化 二级管理 工作流程
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普通高校二级管理模式运行中权力让渡思考 被引量:11
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作者 祝建兵 《学术探索》 2007年第6期137-141,共5页
本文在阐述了普通高校(特指公立普通高等学校)运行二级管理模式的意义及分析高校权力配置对普通高校运行二级管理模式的影响的基础上,提出高校在运行二级管理模式时学校的行政权力应合理让渡于学术权力,强化院系学术权力的主张,并提出... 本文在阐述了普通高校(特指公立普通高等学校)运行二级管理模式的意义及分析高校权力配置对普通高校运行二级管理模式的影响的基础上,提出高校在运行二级管理模式时学校的行政权力应合理让渡于学术权力,强化院系学术权力的主张,并提出了针对性的办法和措施。 展开更多
关键词 二级管理 权力结构 让渡
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IP组播组管理协议及其在二层的实现 被引量:3
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作者 程传庆 《信息技术》 2003年第7期50-52,共3页
介绍了IP网络组播相关知识与协议体系 ,详细解析了互联网组管理协议 ,并提出该协议以太网二层的实现机制。
关键词 IP组播 组管理协议 IP网络 互联网 以太网二层
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二级管理下的教材建设质量监控研究 被引量:1
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作者 李发站 《南通职业大学学报》 2010年第1期45-47,54,共4页
教材建设是提高教学质量的关键之一。在分析高校教材建设存在问题的基础上,构建了高校二级管理下的教材建设质量监控体系及教材建设质量考核指标体系,这对提高教材建设的质量有着十分重要的意义,有助于高校竞争力的提升。
关键词 二级管理 教材建设 质量监控
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二级管理体制下高职院校教学秘书队伍建设研究 被引量:6
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作者 李习爱 《宁波教育学院学报》 2011年第4期8-9,13,共3页
目前二级管理体制下的高职院校教学秘书在教学管理中发挥着举足轻重的作用,但是由于一些现实原因,导致部分高职院校教学秘书队伍建设滞后。因此,要从重视思想教育、创新用人机制、提高工作水平等方面加强教学秘书队伍建设,为我国高职院... 目前二级管理体制下的高职院校教学秘书在教学管理中发挥着举足轻重的作用,但是由于一些现实原因,导致部分高职院校教学秘书队伍建设滞后。因此,要从重视思想教育、创新用人机制、提高工作水平等方面加强教学秘书队伍建设,为我国高职院校培养优秀的教学管理人才。 展开更多
关键词 高职院校 教学秘书 二级管理 队伍建设
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Application of CPML to truncate the open boundaries of cylindrical waveguides in 2.5-dimensional problems 被引量:1
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作者 WANG Yue WANG Jianguo ZHANG Dianhui 《Science in China(Series F)》 2005年第5期656-669,共14页
In order to solve the problem of truncating the open boundaries of cylindrical waveguides used in the simulation of high power microwave (HPM) sources, this paper studies the convolutional PML (CPML) in the cylind... In order to solve the problem of truncating the open boundaries of cylindrical waveguides used in the simulation of high power microwave (HPM) sources, this paper studies the convolutional PML (CPML) in the cylindrical coordinate system. The electromagnetic field's FDTD equations and the expressions of axis boundary conditions are presented. Numerical experiments are conducted to validate the equations and axis boundary conditions. The performance of CPML is simulated when it is used to truncate the cylindrical waveguides excited by the sources with different frequencies and modes in the 2.5-dimensional problems. Numerical results show that the maximum relative errors are all less than -90 dB. The CPML method is introduced in the 2.5-dimensional electromagnetic PIC software, and the relativistic backward wave oscillator is simulated by using this method. The results show that the property of CPML is much better than that of the Mur-type absorbing boundary condition when they are used to truncate the open boundaries of waveguides. The CPML is especially suitable for truncating the open boundaries of the dispersive waveguide devices in the simulation of HPM sources. 展开更多
关键词 convolutional perfectly matched layer FDTD 2-5-dimensional problem WAVEGUIDE backwardwave oscillator TRUNCATION particle simulation.
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浅析当今的以太网交换机
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作者 理查德·卡德 施端 《演艺科技》 2013年第11期6-7,共2页
简要介绍当今演出行业专用的以太网交换机方面的基础知识。
关键词 管理型交换机 二层交换机 三层交换机 IPV4 IPV6 拒绝服务
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