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A Survey on Routing Algorithms for Opportunistic Mobile Social Networks

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China Communications 2021年第2期18卷 86-109页

作者： Ying cai Haochen Zhang Yanfang Fan Hongke xia Department of Computer Science and Technology Beijing Information Science and Technology UniversityBeijing 100101China

Opportunistic Mobile Social Networks(OMSNs)are kind of Delay Tolerant Networks(DTNs)that leverage characteristics of Mobile Ad Hoc Networks(MANETs)and Social Networks,particularly the social features,to boost performance of routing *** in OMSNs communicate to share and disseminate data to meet needs for variety of *** networks have attracted tremendous attention lately due to the data transmission requirement from emerging applications such as IoT and smart city *** carried by human is the carrier of message transmission,so the social features of human can be used to improve the ability of data *** this paper,we conduct a comparative survey on routing algorithms in *** first analyze routing algorithms based on three social *** node selfishness is not really considered previously in aforementioned routing algorithms,but has significant impact on network performance,we treat node selfishness as another social feature,classify and elaborate routing algorithms based on incentive *** assess the impact of social features on routing algorithms,we conducted simulation for six routing algorithms and analyzed the simulation ***,we conclude the paper with challenges on design of routing in OMSNs and point out some future research directions.

关键词： OMSNs routing algorithms social features selfishness incentive mechanism

Synthesis of CuO nanometer powder by one step solid state reaction at room temperature

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Chinese Science Bulletin 1998年第7期43卷 571-573页

作者： Dianzeng jia jianqun Yu Xi xia Xinjiang Univ Dept Chem Urumqi 830046 Peoples R China

Copper oxide nanometer powder was synthesized by one step solid state reaction of CuCl-2·2H-2O with NaOH at room temperature. The solid product CuO was characterized by X-ray diffraction and a transmission electron microscope. It has been found that the particles of prepared copper oxide are spherical with average diameter of 20 nm. This new method has the advantages of convenience and high yield compared with literature methods.

关键词： solid state reaction nanometer powder copper oxide.

Efficient delivery of clay-based nanovaccines to the mouse spleen promotes potent anti-tumor immunity for both prevention and treatment of lymphoma

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Nano Research 2021年第5期14卷 1326-1334页

作者： Ling-xiao Zhang Ying-Bo jia Ya-Ru Huang Hui-Na Liu xia-Mei Sun Ting cai Rui-Tian Liu Zhi Ping Xu Hwa Mei Hospital University of Chinese Academy of Sciences(Ningbo No.2 Hospital)Ningbo315010China Ningbo Institute of Life and Health Industry University of Chinese Academy of SciencesNingbo315010China Australian Institute for Bioengineering and Nanotechnology The University of QueenslandSt LuciaQLD4072Australia State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing100049China

Cancer therapeutic nanovaccines are ideal tools to inhibit tumor growth and provide the body with continuous protecting immune ***,the conventional subcutaneous(SC)vaccination normally induces limited anti-tumor immune responses with low therapeutic ***,we devised clay-based nanovaccines and directly delivered them to the spleen via intravenous(IV)injection to induce the stronger anti-tumor immunity with higher efficacy for tumor prevention and *** clay,i.e.,layered double hydroxide(LDH)was prepared as nanoadjuvant with the average size from 77 to 285 nm and co-loaded with the model antigen ovalbumin(OVA)and bioadjuvant CpG to form CpG/OVA-LDH(CO-LDH)*** found that CO-LDH-215(the size of LDH was 215 nm)promoted dendritic cells to present the most antigen,and moreover showed the highest spleen enrichment(~1.67%of CO-LDH-215 enriched in the spleen at 24 h post IV injection).The in vivo immunologic data showed that CO-LDH-215 induced the most potent anti-tumor immune responses and completely prevented the growth of E.G7-OVA tumor in the mouse ***,IV injected CO-LDH-215 nanovaccine more effectively delayed tumor growth than that SC injected,largely due to the direct and quick delivery of more nanovaccines to the *** study demonstrates that the therapeutic efficacy of nanovaccines can be greatly enhanced by targeted delivery of nanovaccines to the spleen via the proper vaccination route.

关键词： cancer immunotherapy nanovaccine layered double hydroxide targeted delivery to the spleen lymphoma

Analysis of independent risk factors for acute acquired comitant esotropia

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International Journal of Ophthalmology(English edition) 2023年第11期16卷 1854-1859页

作者： Jie cai Wei-xia Lai xia Li Qin Li Ying cai Jin-Mao Chen Department of Ophthalmology the First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina Department of Ophthalmology the First Affiliated Hospital of Guangxi University of Chinese MedicineNanning 530022Guangxi Zhuang Autonomous RegionChina Nanning Aier Eye Hospital Nanning 530001Guangxi Zhuang Autonomous RegionChina

comitant esotropia(AACE).METHODS:A retrospective cohort study was conducted by analyzing 83 patients(case group)with AACE who underwent strabismus correction surgery from January 1,2021 to June 30,*** 73 outpatient volunteers were recruited during the same period as the normal control *** case group’s binocular vision time,near and distance esotropia angle,and near stereo vision function were recorded,and the age,gender,refractive status,and best-corrected visual acuity(BCVA)of both groups were ***,multiple logistic regression analysis was conducted using an eye usage condition questionnaire to determine the independent risk factors for ***:In the case group,61 patients(73.49%)had myopia,with a mean equivalent spherical power(SE)of-3.35±3.31 D(range:+2.75 to-10.62 D)of the right eye and-2.87±3.35 D(range:+2.75 to-11.12 D)of the left *** average duration of diplopia in the case group was 29.83±35.72mo,of which 80 patients(96.39%)were primarily with distance *** near and distance esotropia angle after wearing glasses were 52.36±20.95 prism degree(PD)and 56.71±19.54 PD,respectively,and there was no statistically significant difference between the two(t=1.38,P=0.169).The incidence of improper glasses wearing and unhealthy eye habits in the case group was significantly higher than those in the control group(P<0.05).Close-up work without glasses[β=2.30,odds ratio(OR)=10,95%confidence interval(CI)2.35-42.51,P=0.002]and near work in supine position(β=1.80,OR=6.02,95%CI 3.29-11.02,P<0.001)were independent risk factors for ***:Patients with AACE mainly present with distance diplopia,and there is a high degree of variation in *** work without wearing glasses and in supine position are independent risk factors for AACE.

关键词： acute acquired comitant esotropia strabismus risk factors

Scheme for Implementing Quantum Dense Coding and Teleportation with Tripartite Entangled State in Cavity QED

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Communications in Theoretical Physics 2008年第11期50卷 1113-1116页

作者： jia Chun-xia PENG Zhao-Hui Department of Physics Hunan University of Science and Technology Xiangtan 411201 China

In this paper, we present a peculiar tripartite entangled state that is inequivalent to both the GHZ state and the W state, and then propose to implement efficient quantum information processing such as quantum dense coding and teleportation with this entangled state in cavity QED. In this scheme the atoms interact with a highly detuned cavity field with the assistance of a strong classical driven field. It does not require the transfer of quantum information between the atomic system and the cavity, and then our scheme is insensitive to both the cavity decay and the thermal field.

关键词： dense coding teleportation cavity QED

Chlorobenzenes in waterweeds from the Xijiang River (Guangdong section) of the Pearl River

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Journal of Environmental Sciences 2007年第10期19卷 1171-1177页

作者： DU Qing-ping jia xiao-shan HUANG cai-na Faculty of Environmental Science and Engineering Guangdong University of Technology Guangzhou 510006 China School of Environmental Science and Engineering Sun Yat-sen University Guangzhou 510275 China

The Xijiang River is the major source of water for about 4.5 millions of urban population and 28.7 millions of rural population. The water quality is very important for the health of the rural population. The concentration and distribution of chlorobenzenes （CBs） in both water and waterweeds collected from 4 stations in the Xijiang River （Gangdong section） of the Pearl River in April and November were determined. The result showed that nearly every congener of CBs was detected. The total contents of CBs （ZCBs） in the river water ranged from 111.1 to 360.0 ng/L in April and from 151.9 to 481.7 ng/L in November, respectively. The pollution level of CBs in the water in April was higher than that in November. The contents of ZCBs in waterweeds ranged from 13.53×10^2μg/g to 38.27×10^2μg/g dry weight （dw）. There was no significant difference between April and November in waterweeds. The distribution of CBs in roots, caulis, and leaves of Vallisneria spiralis L. showed different patterns. The leaves mainly contained low-molecular-weight CBs （DCBs）, whereas the roots accumulated more PCBs and HCBs. The average lgBCFlip （bioconcentration factor） of CBs ranged from 0.64 to 3.57 in the waterweeds. The spatial distribution character of CBs in the Xijiang River was： Fengkai County 〈 Yunan County 〈 Yun＇an County 〈 Gaoyao County according to the ZCBs, and the pollution deteriorated from the upstream to the downstream of the Xijiang River. Further analysis demonstrated that the discharge of waste containing CBs may be the main source of CBs pollution in the Xijiang River .

关键词： chlorobenzenes pollution water water weeds distribution bioconcentration factor

Downside of a carbon tax for environment:Impact of information sharing

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Advances in Climate Change Research 2020年第2期11卷 92-101页

作者： NIE jia-jia SHI Chun-Lai XIONG Yu xia Sen-Mao LIANG jia-Min School of Economics and Management Southwest Jiaotong UniversityChengdu610031China Surrey Business School University of SurreyGuilfordGU27XHUK Business School Coventry UniversityCoventryCV15FBUK Newcastle Business School Northumbria UniversityNewcastleNE18STUK

Motivated by the observation that firms invest in carbon emissions reduction to decrease the cost of carbon tax as governments in numerous countries increasingly implement carbon tax to improve the environment,and broad researcher and practitioner agreement that carbon tax implementation always benefits the ***,we find that a carbon tax may actually hurt the environment based on a stylized game model with a better-informed retailer(one who controls the demand information sharing with the manufacturer)and a *** particular,we find that the carbon emissions reduction may harm the environment if the carbon tax is moderate or both the carbon tax and the demand fluctuation are *** further reveal free-riding behavior by the retailer,who may enjoy more profit sharing from the supply chain in the presence of carbon emissions *** on these observations,we argue that a carbon tax does not always benefit the environment when a manufacturer who receives demand information from the retailer responds better to market uncertainty.

关键词： Supply chain management Carbon emissions reduction Carbon tax Information sharing

An Efficient Synthesis of Tertiaryaminomethylphosphonates, A Versatile Precursor for Synthesis of Glyphosate and α-Aminomethylphosphonates

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Chinese Chemical Letters 2002年第9期13卷 818-819页

作者： Liang XU Min xia Jun Chao cai Shanghai Institute of Materia Medica Chinese Academy of SciencesShanghai 200031

Reaction of simple dialkyl phosphites with symmetrical 1,3,5-trisubstituted hexahydro- triazines (HHTs) in the presence of benzyl chloride, afforded tertiaryaminomethylphosphonates in excellent yields. Glyphosate, a-... 详细信息

关键词： Glyphosate a-aminomethylphosphonate 1,3,5-hexahydrotriazine dialkylphosphite.

Inverse Fluid-solid Interaction Scattering Problem Using Phased and Phaseless Far Field Data

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Acta Mathematicae Applicatae Sinica 2020年第1期36卷 74-94页

作者： xia JI Yun-fei jia xiao-dong LIU LSEC Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China Academy of Mathematics and Systems Science Chinese Academy of Sciences School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100190China

We consider the inverse fluid-solid interaction scattering of incident plane wave from the knowledge of the phased and phaseless far field *** the phased data,one direct sampling method for location and shape reconstruction is *** inner product is involved in the computation,which makes it very simple and fast to be *** the help of the factorization of the far field operator,we give a lower bound of the proposed indicator functional for the sampling points inside the elastic *** for the sampling points outside,we show that the indicator functional decays like the Bessel function as the points go away from the boundaries of the elastic *** also show that the proposed indicator functional continuously dependents on the far field patterns,which further implies that the novel sampling method is extremely stable with respect to data *** the phaseless data,to overcome the translation invariance,we consider the scattering of point sources *** adding a reference sound-soft obstacle into the scattering system,we show some uniqueness results with phaseless far field ***,we introduce a phase retrieval algorithm to retrieve the phased data without the additional *** novel phase retrieval algorithm can also be combined with the sampling method for phased *** also design two novel direct sampling methods using the phaseless data ***,some numerical simulations in two dimensions are conducted with noisy data,and the results further verify the effectiveness and robustness of the proposed numerical methods.

关键词： fluid-solid interaction scattering direct sampling method far field pattern phaseless phase retrieval