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MimiBS： Mimicking Base-Station to Provide Location PrivacyProtection in Wireless Sensor Networks

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Journal of Computer Science & Technology 2017年第5期32卷 991-1007页

作者： ling-fang Zeng Dan Feng Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan 430074 China

In a wireless sensor network (WSN), sink node/base station (BS) gathers data from surrounding nodes and sends them to a remote server via a gateway. BS holds important data. Therefore, it is necessary to hide its location from an inside/outside attacker. Providing BS location anonymity against a local and global adversary, we propose a novel technique called MimiBS 'Mimicking Base-Station'. The key idea is the integration of aggregator nodes (ANs) with sensor nodes (SNs), while fine tuning TTL (time to live) value for fake packets, and setting some threshold value for real packet counter rpctr. MimiBS creates multiple traffic-hotspots (zones), which shifts the focus from BS to the newly created ANs hotspots. Multiple traffic-hotspots confuse the adversary while determining the real BS location information. We defend the BS location information anonymity against traffic analysis attack, and traffic tracing attack. MimiBS gives an illusion of having multiple BSs, and thus, if the attacker knows any about AN, he/she will be deceived between the real BS and ANs. MimiBS outperforms BLAST (base-station location anonymity and security technique), RW (random walk), and SP (shortest path), while conducting routing without fake packets, with fake packets, without energy consideration, and with energy consideration respectively.

关键词： base station location privacy wireless sensor network balanced energy consumption aggregator node

Fabrication of Monodisperse ＂Core-Satellite＂ Nanostructures by DNA-Programming： a Novel Class of Superstructured Building Blocks for Hierarchical Nanoassembly

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Chinese Journal of Chemical Physics 2013年第5期26卷 601-606,I0004页

作者： Yang Yang Xue Bai ling-ling fang Zhao-xiang Deng CAS Key Laboratory of Soft Matter Chemistry & Collaborative Innovation Center of Suzhou NanoScience and Technology Department of Chemisto4 University of Science and Technology of ChinaHefei 230026 China

Monodisperse nanoparticle assembly with tunable structure, composition and properties can be taken as a superstructured building block for the construction of hierarchical nanostruc tures from the bottom up, which also represents a great challenge in nanotechnology. Here we report on a facile and controllable method that enables a high yield fabricatioa of uniform gold nanoparticle （AuNP） coresatellites with definable number （in average） of the satellite particles and tunable coretosatellite distance. The formation of the coresatellite nanostruc tures is driven by programmable DNAbasepairing, with the resulting nanocomplexes being isolatable via gel electrophoresis. By rationally controlling the DNA coverages on the core and shell particles, high production yields are achieved for the assembly/isolation process. As well, benefiting from a minimum DNA coverage on the satellite AuNPs, a strong affinity is observed for the asprepared coresatellites to get adsorbed on proteincoated graphene ox ide, which allows for a twodimensional hierarchical assembly of the coresatellite structures. The resulting hierarchical nanoassemblies are expected to find applications in various areas, including plasmonics, biosensing, and nanocatalysis. The method should be generalizable to make even more complicated and higherorder structures by making use of the structural programmability of DNA molecules.

关键词： Core-satellite DNA nanoassembly Graphene oxide Gold nanoparticle Hier-archical structure

Interfacial phase competition induced Kondo-like effect inmanganite-insulator composites

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Frontiers of physics 2016年第6期11卷 129-133页

作者： ling-fang Lin ling-Zhi Wu Shuai Dong Department of Physics Southeast University Nanjing 211189 China School of Geography and Biological Information Nanjing University of Posts and Telecommunications Nanjing 210046 China

A Kondo-like effect, namely, the upturn of resistivity at low temperatures, is observed in perovskite manganite when nonmagnetic insulators are doped as secondary phase. In this paper, the low-temperature resistivity upturn effect has been argued to originate from interfacial magnetic phase reconstruction. Heisenberg spin lattices have been simulated using the Monte Carlo method to reveal phase competition around secondary phase boundary, namely, manganite-insulator boundary that behaves with a weak antiferromagnetic tendency. Moreover, the resistor network model based on double-exchange conductive mechanism reproduces the low-temperature resistivity upturn effect. Our work provides a reasonable physical mechanism to understand the novel transport behaviors in microstructures of correlated electron systems.

关键词： manganite Kondo-like effect manganite-insulator composites phase competition 75.47.Lx 75.47.Gk 73.63.-b

Non-asymptotic Error Bound for Optimal Prediction of Function-on-Function Regression by RKHS Approach

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Acta Mathematica Sinica,English Series 2022年第4期38卷 777-796页

作者： Hong Zhi TONG ling fang HU Michael NG School of Statistics University of International Business and EconomicsBeijing 100029P.R.China Department of Mathematics Hong Kong Baptist UniversityKowloon TongHong KongP.R.China Department of Mathematics The University of Hong KongPokfulamHong KongP.R.China

In this paper,we study and analyze the regularized least squares for function-on-function regression *** our model,both the predictors(input data)and responses(output data)are multivariate functions(with d variables andd variables respectively),and the model coefficient lies in a reproducing kernel Hilbert space(RKHS).We show under mild condition on the reproducing kernel and input data statistics that the convergence rate of excess prediction risk by the regularized least squares is minimax *** examples based on medical image analysis and atmospheric point spread function estimation are considered and tested,and the results demonstrate that the performance of the proposed model is comparable with that of other testing methods.

关键词： Regularized least squares function-on-function regression non-asymptotic error bound reproducing kernel Hilbert space integral operator

Influence of the coupled-dipoles on photosynthetic performance in a photosynthetic quantum heat engine

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Chinese Physics B 2021年第4期30卷 299-304页

作者： ling-fang Li Shun-Cai Zhao Department of Physics Kunming University of Science and TechnologyKunming 650500China

Recent evidence suggests that the multiple charge-separation pathways can contribute to photosynthetic *** this work,the influence of coupled-dipoles on photosynthetic performance was investigated in a two-charge separation pathways quantum heat engine(QHE) *** the population dynamics of the two coupled sites,j-V characteristics,and power involving this photosynthetic QHE model were evaluated for the photosynthetic *** results illustrate that the photosynthetic performance can be greatly enhanced but quantum interference is deactivated by the coupleddipoles between the two-charge separation ***,the photosynthetic performance can also be promoted by the deactivated quantum interference owing to the *** is a novel role of the coupled-dipoles in the energy transport process of biological photosynthetic,and some artificial strategies may be motivated by this photosynthetic QHE model in the future.

关键词： photosynthetic performance coupled-dipole photosynthetic heat engine

Monitoring Hydrogen Sulfide Using a Quantum Cascade Laser Based Trace Gas Sensing System

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Chinese Physics Letters 2011年第6期28卷 302-304页

作者： WANG ling-fang SHARPLES Thomas-Roben Microsystem Research Center Chongqing UniversityChongqing 400030 Department of Chemistry University of OxfordOxfordEnglandUK

We present the detection of hydrogen sulfide(H_(2)S)in a quantum cascade laser(QCL)based gas sensing system employing direct laser absorption *** sensitivity is obtained to be 3.61×10^(−6) cm^(−1)Hz^(−1/2) and the H_(2)S broadening coefficient in N2 is analyzed by fitting to the plot of the Lorentzian half width at the half maximum as a function of N_(2) pressure is 0.1124±0.0031 cm^(−1)·atm^(−1).A simulation based on data from the HITRAN database shows broad agreement with the experimentally obtained spectrum.

关键词： Quantum sulfide Cascade

Evaluation of redundancy-based system: a model checking approach

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Science China(Information Sciences) 2018年第6期61卷 241-243页

作者： ling fang Chunyan MU Zhuo CHENG Guoqiang LI Institute of Technology Innovation Hefei Institutes of Physical Science Chinese Academy of Sciences School of Computing Teesside University State International S&T Cooperation Base of Networked Supporting Software Jiangxi Normal University School of Software Shanghai Jiao Tong University

Dear editor,Functional redundancy is a key and well-known fault tolerance scheme for which there are functionally equivalent versions that can rescue a system from execution failure and improve its reliability with **... 详细信息

关键词： NVP RB a model checking approach Evaluation of redundancy-based system

Large enhancements in gelation behavior of wheat gliadins by incorporation of low concentrations of methylcellulose

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Chinese Chemical Letters 2009年第5期20卷 623-626页

作者： Yi Hu Song ling fang Li Qiang Zheng Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education Zhejiang University Hangzhou 310027 China

Influence of non-gelling methylcellulose （MC） on gelation behavior of wheat gliadins in 13 wt% alkaline propanol/water （50：50, v/v） solution was investigated using dynamic theological time sweep test. Increasing MC concentration （CMC） up to CMC = 1 wt% caused a significant reduction in gelation time （tget） of the solution and an increase in loss tangent （tan δ） value of the resultant gel at T 〈 30 ℃.

关键词： Gliadin Gelation Rheology Methylcellulose (MC)

Effects of delayed mating on the fecundity, fertility and longevity of females of diamondback moth, Plutella xylostella

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Insect Science 2011年第3期18卷 305-310页

作者： Xiang-Ping Wang Yu-ling fang Zhong-Ning Zhang College of Agriculture Yangtze University Jingzhou Hubei Province Chinese Academy of Sciences Beijing China State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology Chinese Academy of Sciences Beijing China

The effects of delayed mating on the copulation duration, female fertility, fecundity, egg fertility, longevity and the number days alive after mating of females of diamondback moth （DBM）, Plutella xylostella, were studied. When male mating was delayed, the female fertility, fecundity, egg fertility, longevity and number days alive after mating of DBM decreased, and there was a negative correlation between the age of the moth with those variables except copulation duration. When female mating was delayed, the female fertility, fecundity, percent egg fertility and number days alive after mating of DBM also decreased, but the longevity increased, which also showed a negative relationship between the age of the moth with the variables except copulation duration and longevity. When both males and females delayed mating, the female fertility and fecundity decreased; egg fertility was affected marginally, and the longevity of females increased. The moth age was negatively correlated with those variables.

关键词： delayed mating egg fertility fecundity female fertility longevity Plutella xylostella