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Multi-path routing based on load-balance for cognitive packet networks

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The Journal of China Universities of Posts and Telecommunications 2011年第5期18卷 71-75页

作者： CHEN liang JI Hong li yi li Xi College of Information and Commumieation Engineering Beijing University of Posts and Telecommunications Beijing 100876 China

Quality of service （QoS） routing algorithms have been hardly discussed in the scientific community, most previous work on QoS routing concentrates on the performance of the single route. Cognitive packet network （CPN） has been designed for providing QoS routing. In this paper, to balance the loads among networks, we present a multi-path routing algorithm based on load-balance （MPRLB）, which is carried out in two steps. The algorithm with low computational complexity is firstly applied to establish multi path routing for each source and destination node pairs （SD-pair） nodes in the network. Then, we propose the hopfield neural network algorithm, which is applied to improve the efficiency of the flow deviation method for fast flow allocation among the links of the network based on load balance. Extensive simulation results demonstrate that the proposed scheme significantly improves the performance compared with the existing scheme that ignores load balancing.

关键词： hopfield neural network CPN multi-path routing

Formation of the Kuiper Belt by Long Time-Scale Migration of Jovian Planets

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Chinese Journal of Astronomy and Astrophysics 2006年第5期6卷 588-596页

作者： Jian li li-Yong Zhou yi-Sui Sun Department of Astronomy Nanjing University Nanjing 210093

The orbital migration of Jovian planets is believed to have played an important role in shaping the Kuiper Belt. We investigate the effects of the long time-scale （2 ×107 yr） migration of Jovian planets on the orbital evolution of massless test particles that are initially located beyond 28 AU. Because of the slowness of the migration, Neptune＇s mean motion resonances capture test particles very efficiently. Taking into account the stochastic behavior during the planetary migration and for proper parameter values, the resulting concentration of objects in the 3：2 resonance is prominent, while very few objects enter the 2：1 resonance, thus matching the observed Kuiper Belt objects very well. We also find that such a long time-scale migration is favorable for exciting the inclinations of the test particles, because it makes the secular resonance possible to operate during the migration. Our analyses show that the us secular resonance excites the eccentricities of some test particles, so decreasing their perihelion distances, leading to close encounters with Neptune, which can then pump the inclinations up to 20°.

关键词： celestial mechanics -- Kuiper Belt -- methods numerical -- solar system formation

Intelligent diagnosis of the solder bumps defects using fuzzy C-means algorithm with the weighted coefficients

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Science China(Technological Sciences) 2015年第10期58卷 1689-1695页

作者： LU XiangNing SHI Tielin WANG SuYa li li yi SU Lei liAO GuangLan School of Mechanical & Electrical Engineering Jiangsu Normal University School of Materials Science and Engineering Georgia Institute of Technology State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and Technology

Solder bump technology has been widely used in electronic packaging. With the development of solder bumps towards higher density and finer pitch, it is more difficult to inspect the defects of solder bumps as they are hidden in the package. A nondestructive method using the transient active thermography has been proposed to inspect the defects of a solder bump, and we aim at developing an intelligent diagnosis system to eliminate the influence of emissivity unevenness and non-uniform heating on defects recognition in active infrared testing. An improved fuzzy c-means(FCM) algorithm based on the entropy weights is investigated in this paper. The captured thermograms are preprocessed to enhance the thermal contrast between the defective and good bumps. Hot spots corresponding to 16 solder bumps are segmented from the thermal images. The statistical features are calculated and selected appropriately to characterize the status of solder bumps in FCM clustering. The missing bump is identified in the FCM result, which is also validated by the principle component analysis. The intelligent diagnosis system using FCM algorithm with the entropy weights is effective for defects recognition in electronic packages.

关键词： solder bump Fuzzy C-Means clustering feature weighting principal component analysis

Theoretical Study on the Structural and Electronic Properties of the Reduced SnO_2 (110) Surface

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Chinese Journal of Structural Chemistry 2007年第5期26卷 606-612页

作者： ZHANG Yong-Fan liN Wei WANG Qi-Wei li yi li Jun-Qian Department of Chemistry Fuzhou University Fuzhou Fujian 350002 China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter The Chinese Academy of Sciences Fuzhou Fujian 350002 China

The reduced SnO2（110） surface has been investigated by using first-principles method with a slab model. By examining the vacancy formation energy of three kinds of reduced SnO2（110） surfaces, the most energetically favorable defect surface is confirmed to be the surface with the coexistence of bridging and in-plane oxygen vacancies, which is different with the traditional model by only removing bridging oxygen. The results of band structure calculations indicate that the electronic structure of this defect surface is similar to the SnO surface.

关键词： SnO2(110) surface band structure defect state

Application of Et_3NHCl-AlCl_3 Ionic liquid as an Initiator in Cationic Copolymerization of 1, 3-Pentadiene with Styrene

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Chinese Chemical Letters 2006年第1期17卷 117-120页

作者： Yuan Yuan WANG Hui SUN Juan li Dong JIANG li yi DAI Center for the Chemistry of Ionic liquids East China Normal University （E.C.N.U） Shanghai 200062

The random copolymer poly （1, 3-pentadiene-co-styrene） formed through cationic copolymerization using the ~ethylamine hydrochloride and hydrous aluminium chloride （Et3NHCl-AlCl3） room temperature ionic liquid as initiating agent in toluene was analyzed using IR spectra in conjunction with gel permeation chromatography （GPC）. The room temperature ionic liquid was found to have high initiatic activity for copolymerization.

关键词： Et3NHCl-AlCl3 ionic liquid 1 3-pentadiene styrene cationic copolymerization.

A CASE OF TRICUSPID ENDOCARDITIS WITH SUBSEQUENT LUNG ABSCESS

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Chinese Medical Sciences Journal 2007年第2期22卷 136-138页

作者： Hou-li Wang yi li Teng-da Xu Department of Emergency Medicine Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730

THE incidence of isolated right heart infective endocarditis （IE） is far less common than that of left heart. Clinical presentation is often associated with pulmonary manifestations. The main symptoms include high fever, chest pain, and dyspnea due to septic pulmonary emboli. Degenerative valvular disease, congenital heart diseases, prosthetic valves, long-term hemodialysis, diabetes mellitus predispose patients at increased risk of IE.1 In young persons, IE may be associated with intravenous drug abuse.2 This report dealt with a young patient who had none of the risk factors mentioned above. He was diagnosed and treated for lung abscess and septemia for one and a half months. Further investigation unveiled infective vegetation on tricuspid valve. Following surgical resection of the vegetation, fever and respiratory symptoms completely remitted. The mechanism of the IE occurred on the normal native tricuspid valve is proposed.

关键词： infective endocarditis right heart endocarditis lung abscess emergency

Pretreatment with a modified ***'solution in patients with severe upper limb injuries:Four case reports

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World Journal of Clinical Cases 2023年第20期11卷 4926-4931页

作者： Zhong-Yang Sun li-yi li Jian-Xin Xing liang-Cheng Tong ying li Department of Orthopedics Air Force Hospital of Eastern TheaterNanjing 210002Jiangsu ProvinceChina

BACKGROUND This study aims to describe the application of a modified ***'solution in patients with severe limb *** SUMMARY Four patients who sustained a high-energy trauma and underwent complete upper limb amputation were pretreated with a modified ***'solution before upper limb *** the perfusion solution stopped flowing from the blood vessel,the amputated upper limb amputation was *** patients were instructed to perform functional rehabilitation training after the *** 4 patients were followed up for 5 *** the severed upper limbs *** re-examination after the operation showed that the function of the affected limb was *** the patients were satisfied with the sensory and functional recovery of the affected *** The modified ***'solution can effectively improve the success rate of limb salvage surgery and the recovery of limb function in patients with a severe limb injury.

关键词： Severe upper limb injury Preperfusion Modified St.Thomas'solution Case report

Design, synthesis, and biological evaluation of N-hydroxycinnamamide/salicylic acid hybrids as histone deacetylase inhibitors

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Chinese Chemical Letters 2014年第3期25卷 474-478页

作者： Tao You Ke Chen Fei-Hai Wang Pi-Hong li li-yi li Zhi-Hao Wu Kong-Hai Ni Zhi-Qiang Zheng Department of General Surgery The Second Affiliated HospitalWenzhou Medical University School of Clinical Medicine Wenzhou Medical University

Novel histone deacetylase （HDAC） inhibitors 9a-1 were designed and synthesized by coupling the carboxyl group of salicylic acid （SA） with N-hydroxycinnamamides through various alkylol amines, and their in vitro biological activities were evaluated. The N-hydroxycinnamamide/SA hybrids 9b-f and 9h showed good to moderate anti-tumor activities. Notably, compound 9e had a greater potency, comparable to vorinostat （SAHA）, in human colon carcinoma cells, which was probably, or at least partially, attributable to the positive effects of the chain length noted in allojlol amines. Furthermore, the HDAC inhibitory activities of 9e against Hela cell nuclear were also similar to that of vorinostat （SAHA）, while the tested compounds 9c-f did not exhibit any isoform selectivity in the inhibition of HDACs. In addition, compound 9e could selectively inhibit tumor cells, but not inhibit non-tumor cell proliferation in vitro. Our findings suggest that the N-hydroxycinnamamide/SA hybrids may hold significant promise as therapeutic a^ents for the intervention of human cancers.

关键词： SynthesisAnti-tumor agentsHistone deacetylase inhibitorsN-HydroxycinnamamidesSalicylic acid

Influences of Electrolytes on Soap-Free P(ST-MMA-AA) Emulsion Polymerization

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复旦学报（自然科学版） 2005年第5期44卷 875-876页

作者： Zeping li Ronglong li yi DU Chengyou KAN Deshan liU Department of Chemical Engineering Tsinghua University Beijing 100084 China

Functional polymer microspheres are kinds of polymer particles with special structures, morphologies or functional groups[1] , and have been gained much attention because of their specific properties and their application since 1980s. Although some researches have investigated that the latex particle size and its distribution,as well as the stability of polymerization and the resultant latex were strongly influenced by introducing electrolyte into the emulsion polymerization system[2] , few of them focused on the systematic study of electrolytes on the soap-free emulsion polymerization, which is considered as a conventional approach to synthesize functional polymer microspheres with clean surfaces[2]. In this presentation, the influences of variety and dosage of electrolytes on soap-free emulsion polymerization of St, MMA and AA were studied, and a series of micron or submicron sized latex particles with narrow distribution were obtained.

关键词：聚合体电解液离子形态稳定性电化学