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SVM-based loss differentiation algorithm for wired-cum-wireless networks

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The Journal of China Universities of Posts and Telecommunications 2009年第4期16卷 104-111页

作者： DENG Qian-hua ,cai An-ni School of Telecommunication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China School of Telecommunication Engineering Beijing University of Posts and Telecommunications Beijing 100876 China

In a hybrid wired-cum-wireless network environment, packet loss may happen because of congestion or wireless link errors. Therefore, differentiating the cause is important for helping transport protocols take actions to control congestion only when the loss is caused by congestion. In this article, an end-to-end loss differentiation mechanism is proposed to improve the transmission performance of transmission control protocol （TCP）-friendly rate control （TFRC） protocol. Its key design is the introduction of the outstanding machine learning algorithm - the support vector machine （SVM） into the network domain to perform multi-metric joint loss differentiation. The SVM is characterized by using end-to-end indicators for input, such as the relative one-way trip time and the inter-arrival time of packets fore-and-aft the loss, while requiring no support from intermediate network apparatus. Simulations are carried out to evaluate the loss differentiation algorithm with various network configurations, such as with different competing flows, wireless loss rate and queue size. The results show that the proposed classifier is effective under most scenarios, and that its performance is superior to the ZigZag, mBiaz and spike （ZBS） scheme.

关键词： machine learning SVM TCP-friendly rate control (TFRC) congestion control

Frequency effect on p-nitrophenol degradation under conditions of strict acoustic and electric control

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Water Science and Engineering 2011年第1期4卷 74-82页

作者： Chang-ping ZHU Bo huaNG Qing-bang HAN cai-hua ni Guang-jun ZHU Ming-hua LIU Ming-lei SHAN College of Computer and lnformation Engineering Hohai University Changzhou 213022 P. R. China State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing 210098 P. R. China College of Information and Electrical Engineering China University of Mining and Technology Xuzhou 221008 P. R. China School of Chemical and Material Engineering Jiangnan University Wuxi 214122 P. R. China

The process of decomposing p-nitrophenol （PNP） with power ultrasound requires strict control of acoustic and electric conditions. In this study, the conditions, including acoustic power and acoustic intensity, but not ultrasonic frequency, were controlled strictly at constant levels. The absorbency and the COD concentrations of the samples were measured in order to show the variation of the sample concentration. The results show significant differences in the trend of the solution degradation rate as acoustic power increases after the PNP solution （with a concentration of ll4 mg/L and a pH value of 5.4） is irradiated for 60 min with ultrasonic frequencies of 530.8 kHz, 610.6 kHz, 855.0 kHz, and 1130.0 kHz. The degradation rate of the solution increases with time and acoustic power （acoustic intensity）. On the other hand, the degradation rate of the solution is distinctly dependent on frequency when the acoustic power and intensity are strictly controlled and maintained at constant levels, The degradation rate of the PNP solution declines with ultrasonic frequencies of 530.8 kHz, 610.6 kHz, 855.0 kHz, and 1 130.0 kHz; the COD concentration, on the contrary, increase.

关键词： ultrasonic treatment frequency effect COD concentration p-nitrophenol

A　NEW　EMPIRICAL　EQUATION　ON　CORRELATION　BETWEEN　TOPOLOGIC　INDEX　AND　PHYSICO－CHEMICAL　PROPERTIES　OF　NORMAL　PARAFFINS

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Chinese Chemical Letters 1996年第8期7卷 771-772页

作者： cai hua ni Xian Yu ZENG ping MEI(Department of Chemistry, JingZhou Teachers’ College Department of Polymer Science, Beijing Universityof Chemical Techology department of Applied Chemistry, Jianghan Petroleum Institute). Department of Chemistry Jingzhou Teachers' College Department of Polymer Science Beijing Univ. of Chemical Technology Department of Applied Chemistry Jianghan Petroleum Institute

An empirical epuation to reveal relations between topological index(ZG)and physico chemical portes of normal paraffins is proposed as follows; p= a ig ZG/Nx + b, where P standsfor a physico-chemical property, N is the number of carbon atoms in the molecule, and ZG is thetopological index proposed by Hosoya a, b, and x are constants related to a certain Phyaicochemical property. Thirteen properties are calculated ac this equation The values of theseproperties caiculated are Close to those from experiments.

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Anti-breast cancer effect of quercetin nanoparticles based on MOFs for chemo-phototherapy and heat shock proteins inhibition

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Nano Research 2025年第1期18卷 545-558页

作者： Rongyue Zhu Shilang Liao Mengru cai Dongge Yin Tingting Fu Jing Liu Yuji Du Jiahui Kong Rongrong Chang Jian ni Xingbin Yin Beijing University of Chinese Medicine Fangshan DistrictBeijing 102488China

Phototherapy, including photodynamic therapy(PDT) and photothermal therapy (PTT), is a promisingmethod of tumor treatment, which has the advantages ofstrong specificity and small side effects. However, PDT willaggravate the hypoxic environment in tumor cells, and PTTwill lead to heat-resistant reaction, both of which will make theorganism quickly produce heat shock proteins (HSPs) toprotect itself, thus seriously hindering the therapeuticefficiency of phototherapy. As a natural HSPs inhibitor,quercetin (QR) provides a feasible way to solve this ***, a kind of metal organic framework (MOF), Fe-TCPP(FT), was used as a delivery material and photosensitizer tobuild a chemo-phototherapy platform, and QR was used as achemotherapy drug and HSPs inhibitor. On this basis, the nanoparticles (NPs) were modified with PEG-CPP30 (a cellpenetratingpeptide that specifically recognizes human breast cancer MCF-7 cells), which showed excellent targetingcapacity and biocompatibility. The combination of chemotherapy and phototherapy significantly improved the anti-cancereffect. At the same time, NPs also showed prominent anti-HSPs effect. The effective connection of the two played acomplementary role in the process of tumor treatment, which provided a new strategy for the accurate and efficienttreatment of tumors in the future.

关键词： quercetin Fe-metal organic frameworks(MOFs) phototherapy anti-cancer heat shock proteins inhibition

Desulfurization using the 1,2-dimethylimidazolium ionic liquid as an adsorbent

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Chinese Chemical Letters 2015年第3期26卷 317-319页

作者： Yue-Qin cai Gong-hua Song Dian-ni Liang School of Chemistry and Molecular Engineering East China University of Science and Technology Shanghai Key Laboratory of Chemical Biology Institute of Pesticides & PharmaceuticalsEast China University of Science and Technology

The aim of this study is to investigate the possible use of a 1,2-dimethylimidazolium ionic liquid,2,2-bis（（1,2-dimethylimidazolium）methyl）propane-1,3-diol hexafluorophosphate（1）,as an adsorbent to selectively remove aromatic heterocyclic sulfur compounds from model *** result indicates that adsorbent 1 is insoluble in model *** spent IL saturated sulfur compounds could be regenerated by a water dilution *** influence of extraction time or temperature as well as the molar ratio of 1 to aromatic heterocyclic sulfur compound was also studied.

关键词： adsorbent sulfur remove aromatic heterocyclic ionic insoluble regenerated saturated molar

Output Feedback H~∞ Control for a Class of Nonlinear Stochastic Systems

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Acta Mathematicae Applicatae Sinica 2010年第2期26卷 251-266页

作者： Yuan-hua ni Key Laboratory of Systems and Control Institute of Systems Science Academy of Mathematics and SystemsScience Chinese Academy of Sciences Beijing 100190 China

This paper deals with the output feedback H∞ control problem for a class of nonlinear stochastic systems. Based on the latest developed theory of stochastic dissipation, a notable result about the nonlinear H∞ output feedback control of deterministic system is generalized to the stochastic case. Finally, in the cases of state feedback and output feedback, two families of controllers are provided respectively.

关键词： H∞ control stochastic nonlinear systems Hamilton-Jacobi-Isaacs equations output feedback

Total Coloring of Planar Graphs without Chordal 7-cycles

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Acta Mathematica Sinica,English Series 2015年第12期31卷 1951-1962页

作者： hua cai School of Mathematics Shandong University Department of Mathematics Changji University

A k-total-coloring of a graph G is a coloring of vertices and edges of G using k colors such that no two adjacent or incident elements receive the same *** this paper,it is proved that if G is a planar graph with Δ（... 详细信息

关键词： Planar graph total coloring chordal 7-cycle

Collision-induced Rotational Energy Transfer in an Atom-Diatom System

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Chinese Journal of Chemical Physics 2008年第5期21卷 457-462页

作者： Yan-qing ni Jian Li Feng-cai Ma Department of Physics Liaoning University Shenyang 110036 China Department of Science Shenyang Institute of Aeronautical Engineering Shengyang 110036 China

As a further theoretical study of the collision-induced quantum interference on rotational energy transfer in an atom-diatom system, based on the first-Born approximation of time-dependent perturbation theory, taking into account the anisotropic Lennard-Jones interaction potential and the long-range interaction potential, the differential interference angles in singlet-triplet mixed states of CO A^1Π（v=9）-e3∑-（v=1） system in collision with He, Ne, Ar, and other partners were calculated theoretically. The relationships of differential interference angle versus impact parameters, including collision parameter b and velocity, are obtained.

关键词： Rotational energy transfer Collision-induced quantum interference Interference angle

Sediment dynamics in an offshore tidal channel in the southern Yellow Sea

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International Journal of Sediment Research 2014年第2期29卷 246-259页

作者： Wen-fei ni Ya-ping WANG Xin-qing ZOU Ji-cai ZHANG Jian-hua GAO School of Geographic and Oceanographic Sciences Nanjing University Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology Ministry of Land and Resources School of Geographic and Oceanographic Sciences Nanjing University

The geomorphology of the southern Yellow Sea(SYS) is characterized by offshore radial sand ridges(RSR).An offshore tidal channel(KSY Channel) is located perpendicular to the coast,comprised of a main and a tributary channel separated by a submarine sand ridge(KSY Sand Ridge) extending *** order to investigate the interactions among water flow,sediment transport,and topography,current velocity and suspended sediment concentration(SSC) were observed at 11 anchor stations along KSY Channel in RSR during a spring tide *** resolution bottom topography was also *** currents and tidally averaged suspended sediment fluxes were calculated and analyzed by using the decomposition *** suggested that the water currents became stronger landward but with asymmetrical current speed and temporal duration of flood and ebb *** currents showed landward water transport in the nearshore channel and a clockwise circulation around the KSY Sand ***-averaged SSC also increased landward along the *** main mechanisms controlling SSC variations were resuspension and horizontal advection,with spatial and temporal variations in the channel,which also contributed to sediment redistribution between channels and sand *** flow transport and the tidal pumping effect dominated the suspended sediment flux in the KSY *** KSY Sand Ridge had a potential southward migration due to the interaction between water flow,sediment transport,and topography.

关键词： Tidal channel Sand ridge Suspended sediment concentration Flux decomposition Southern Yellow Sea