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Adaptive joint configuration optimization for collaborative inference in edge-cloud systems

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Science China(Information Sciences) 2024年第4期67卷 335-336页

作者： Zheming YANG wen ji Zhi WANG Institute of Computing Technology Chinese Academy of Sciences University of Chinese Academy of Sciences Peng Cheng Laboratory Tsinghua Shenzhen International Graduate School Tsinghua University

With the rapid development of technologies such as deep learning and the Internet of Things(IoT), the deployment and application of various IoT devices are becoming increasingly widespread, resulting in the inference tasks generated increasing dramatically [1]. Many deep neural network(DNN) models are deployed on servers for performing inference tasks.

关键词： Inference engines

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Cross-layer scheduling with fairness for multi-user OFDM system:a restless bandit approach

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The Journal of China Universities of Posts and Telecommunications 2011年第4期18卷 25-30页

作者： GE wen-dong ji Hong LI Xi Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

In OFDM-based System such as long term evolution （LTE）, the scheduling scheme plays an essential role in not only improving the capacity of system, but also guarantee the fairness among the user equipments （UEs）. However, most existing work about scheduling only considers the current throughput in physical layer. Thus in this paper, a cross-layer scheduling with fairness based on restless bandit （CSFRB） scheme with the ＇indexability＇ property is proposed for the multi-user orthogonal frequency-division multiplexing （OFDM） system to minimize the distortion in the application layer, to maximize the throughput and to minimize the energy consumption in the physical layer. The scheduling problem is firstly established as a restless bandit problem, which is solved by the primal-dual index heuristic algorithm based on the first order relaxation with low complexity, to yield the CSFRB scheme. AdditionaUy, this scheme is divided into offiine computation and online selection, where main work will be finished in former one so as to decrease the complexity further. Finally, extensive simulation results illustrate the significant performance improvement of the proposed CSFRB scheme compared to the existing one in different scenarios.

关键词： multi-user OFDM scheduling cross-layer design restless bandits

Index-adaptive Triangle-Based Graph Local Clustering

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Computers, Materials & Continua 2023年第6期75卷 5009-5026页

作者： Yuan Zhe Wei Zhewei wen ji-rong Renmin University of China Beijing100872China

Motif-based graph local clustering(MGLC)algorithms are gen-erally designed with the two-phase framework,which gets the motif weight for each edge beforehand and then conducts the local clustering algorithm on the weighted graph to output the *** correctness,this frame-work brings limitations on both practical and theoretical aspects and is less applicable in real interactive *** research develops a purely local and index-adaptive method,Index-adaptive Triangle-based Graph Local Clustering(TGLC+),to solve the MGLC problem ***+combines the approximated Monte-Carlo method Triangle-based Random Walk(TRW)and deterministic Brute-Force method Triangle-based Forward Push(TFP)adaptively to estimate the Personalized PageRank(PPR)vector without calculating the exact triangle-weighted transition probability and then outputs the clustering result by conducting the standard sweep *** paper presents the efficiency of TGLC+through theoretical analysis and demonstrates its effectiveness through extensive *** our knowl-edge,TGLC+is the first to solve the MGLC problem without computing the motif weight beforehand,thus achieving better efficiency with comparable ***+is suitable for large-scale and interactive graph analysis tasks,including visualization,system optimization,and decision-making.

关键词： Graph local clustering triangle motif sampling method

Shot Noise in Aharonov-Casher Rings

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Chinese Physics Letters 2010年第6期27卷 199-202页

作者： LIN Liang-Zhong ZHU Rui DENG wen-ji Department of Physics South China University of Technology Guangzhou 510640

We investigate the shot noise of electron transport through an Aharonov-Casher ring subject to the Rashba spin-orbit coupling （SOC）. Analytic expressions for the coefficients of reflection and transmission are derived by using the Griffith boundary conditions. For this kind of SOC, the ballistic transport of electrons can be analyzed as two independent spin channels, and both of them have the same transmission and reflection coefficients. The dependences of shot noise and Landauer-Biittiker conductance on controllable factors, including the strength of Rashba SOC, the asymmetrical angle of lead-connection positions, the radius of the rings, and the wave vector （or energy） of the incident Fermi electrons, are explicitly described by some new combined parameters. The ways that the shot noise and conductance vary with Rashba SOC and with asymmetrical angle are demonstrated by numerical simulations, respectively. It is revealed that the shot noise reaches its maximum for the particular situation of half transmission and half reflection and zero shot noise occurs at conductance maxima.

关键词： ELECTRONIC noise ELECTRON transport BOUNDARY value problems ELECTRIC conductivity REFLECTANCE NUMERICAL analysis SIMULATION methods & models

Study on alkali mechanical activation for recovering rare earth from waste fluorescent lamps

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Journal of Rare Earths 2018年第1期36卷 108-112页

作者： Ling He wen ji Yanwei Yin Weimin Sun State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology School of Materials Science and Engineering Lanzhou University of Technology

Recycling of rare earth from waste fluorescent lamps is becoming increasingly important in future sustainable development. However, cerium and terbium are usually difficult to recover due to the stable spinel structure. In the research, alkali mechanical activation was innovatively used to pretreat the waste phosphors for recovering rare earths. The effect of alkali mechanical activation on the structural changes of waste phosphors was explored using X-ray diffraction （XRD） and Fourier transform infrared spec- troscopy （FFIR）. Meanwhile, the effects of different parameters including milling speed, activation time, and amount of alkali on the leaching rates of rare earth were investigated. The rare earth elements re- covery rates are observed to increase rapidly, particularly with increases in rotational speed and acti- vation time. Under optimal conditions, the maximum leaching rates of Ce and Tb reach 85.0% and 89.8%, respectively. And the total recovery rates of rare earth reach 95.2%. All the results indicate that alkali mechanical activation can effectively destroy the spinel structure and produce substantial physico- chemical changes. These changes lead to the easy dissolution of rare earths in acid solution, and greatly improve the leaching of cerium and terbium.

关键词： Rare earthSpinel structureRecovery rateAlkali mechanical activationWaste phosphorsRare earths

Effects of the Wetting Particles on Phase Separation of Binary Mixtures

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Chinese Physics Letters 2000年第11期17卷 824-826页

作者： LIU ji-wen MA Yu-Qiang National Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093

We study phase separation of binary mixtures in the presence of mobile particles by the lattice Monte Carlo *** presence of mobile particles changes the morphology of the domain growth,in agreement with earlier experimental *** varying the wetting interaction strength,we can control the speed of phase separation,and find a critical wetting strength beyond which the growth of the domains slows *** propose a novel scaling function which describes the growth of the domain size L(t)as a function of *** suggests an applicable way to tune the speed of phase separation by the coupling between the phase decomposition and the mobile particle-wetting process.

关键词： strength separation phase

Interactions between Soil Characteristics, Environmental Factors, and Plant Species Abundance: A Case Study in the Karst Mountains of Longhushan Nature Reserve, Southwest China

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Journal of Mountain Science 2015年第4期12卷 943-960页

作者： Dado TOURE GE ji-wen ZHOU jian-wei Institute of Ecology and Environmental Sciences School of Environmental Studies China University of Geosciences Faculty of Environmental Geology School of Environmental Studies China University of Geosciences

The ability to manage and restore plant communities in the face of human-induced landscape change may rely on our ability to predict how species respond to environmental *** this response requires examining factors or their interactions that have influence on plant and resource *** objective was to analyze the relationships between changes in plant abundance and the interaction among environmental habitat factors including soil, geological(rock type), and other environmental variables in the Longhushan karst mountains *** density and dominance were examined using ANOVA, ANCOVA,and Generalized Linear Models to establish the single or combined effects of these groups of *** results showed that trends in abundance were mainly affected by rock type(related to the percentage content of dolomite and calcite), soil characteristics in association with *** plant indices were higher in dolomite dominated areas and varied positively with moisture, and elevation, but negatively with organic matter, while density also increased with slope *** results demonstrate that significant variations in species abundance was produced with the combination of variables from soil, geological, andenvironmental factors, suggesting their interaction influence on *** postulate that spatial variations in plant abundance in karst ecosystem depends on the carbonate rock type in addition to water and nutrient availability which are mainly controlled by topography and other factors such as soil texture and *** study suggests that in karst areas carbonate rock type, in addition to local environmental variables, should be taken into account when analyzing the factors that have impact on plant communities.

关键词： Interrelationship Karst soil Plant abundance Rock type Longhushan Nature Reserve

Correlations of β-catenin,Ki67 and Her-2/neu with gastric cancer

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Asian Pacific Journal of Tropical Medicine 2014年第4期7卷 257-261页

作者： Hong-wen Wu Cheng-Yong Qin ji-Lai Huang Xian-Yi Kong wen-ji Wang wen-Kun Bai School of Medicine Shandong University Digestive Internal Medicine The First Hospital of Zibo City Digestive Internal Medicine Shandong Provincial Hospital Digestive Internal Medicine Shandong Qianfoshan Hospital

Objective:To study the clinical pathologic characteristics ofβ-catenin,Ki67 and Her-2/neu in gastric cancer and the correlation ofβ-catenin and Ki67 to the protein expression and gene conditions of Her-2/***:The protein expression ofβ-catenin,Ki67 and Her-2/Neu was detected by immunohistochemistry in 101 cases of gastric cancer and the gene conditions of Her-2/Neu by fluorescence in situ hybridization(FISH).Results:The protein expression ofβ-catenin,Ki67 and Her-2/Neu had close relationship with the clinical pathologic characteristics of gastric ***β-catenin and Ki67 had obvious correlation to the differentiation,infiltration and lymphatic metastasis of the gastric cancer(P<0.05).The Ki67 had close relationship with the tumor-node-metastasis staging staging of gastric cancer(P<0.05).Her-2/Neu had close relationship with the differentiation and tumor-node-metastasis staging of gastric cancer(P<0.05)but had no relationship with the infiltration and lymphatic metastasis of the gastric cancer(P<0.05).The protein expression of Ki67 had significantly positive correlation to the protein expression and gene amplification conditions of Her-2/Neu(r=0.567,P<0.05 for protein;r=0.304,P<0.05 for gene).Conclusions:Combined detection ofβ-catenin,Ki67 and Her-2/Neu can be used as a reliable method to help the observation of biological behavior,diagnosis and prognosis of gastric cancer,and Ki67 can be used to serve the preliminary screening of Her-2/Neu gene state.

关键词： Gastric cancer β-catenin Ki67 Her-2/neu Immunohistochemistry Fluorescence in situ hybridization Tumor marker

A New Isoflavonoid from Belamcanda chinensis （L.） DC.

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Journal of Integrative Plant Biology 2005年第11期47卷 1404-1408页

作者： Min-jian QIN wen-Liang ji Zheng-Tao WANG wen-Cai YE College of Traditional Chinese Medicine China Pharmaceutical University Nanjing 210038 China Shanghai University of Traditional Chinese Medicine Shanghai 201203 China Institute of Traditional Chinese Medicine Jinan University Guangzhou 510632 China

A new isoflavonoid, 5, 6, 7, 3＇-terahydroxy-8, 4＇, 5＇-trimethoxyisoflavone （1）, along with 10 known isoflavonoids, namely 5, 6, 7, 4＇-tetrahydroxy-8-methoxyisoflavone （2）, irilone （3）, genistein （4）, tectorigenin （5）, irigenin （6）, irisflorentin （7）, dichotomitin （8）, dimethyltectorigenin （9）, iridin （10）, and tectoridin （11）, was isolated from the alcohol extract of the rhizomes of Belamcanda chinensis （L.） DC. The structures of these compounds were elucidated on the basis of results of spectroscopic analysis.

关键词： Belamcanda chinensis isoflavonoid 5, 6, 7, 3'-terahydroxy-8, 4', 5'-trimethoxyisoflavone.