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Interference coordination schemes for cellular network assisted device-to-device multicast

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The Journal of China Universities of Posts and Telecommunications 2013年第5期20卷 63-70页

作者： wang Dong-yu wang Xiao-xiang wang yu-long Key Laboratory of Universal Wireless Communications Ministry of EducationBeijing University of Posts and Telecommunications

In this paper, a multicast concept for device-to-device （D2D） communication underlaying a cellular infrastruc^tre is investigated. To increase the overall capacity and improve resource utilization, a novel interference coordination scheme is proposed. The proposed scheme includes two steps. First, in order to mitigate the interference from D2D multicast transmission to cellular networks （CNs）, a dynamic power control scheme is proposed that can determine the upper bound of D2D transmitter power based on the location of base station （BS） and areas of adjacent cells from the coverage area of D2D multicast group. Next, an interference limited area control scheme that reduces the interference from CNs to each D2D multicast receiver is proposed. The proposed scheme does not allow the coexistence of cellular user equipments （CUEs） located in the interference limited area to reuse the same resources as the D2D multicast group. From the simulation results, it is confirmed that the proposed schemes improve the performance of the hybrid system compared to the conventional ways.

关键词： OFDM wireless system feedback load reduction multicast system unicast system opportunistic feedback scheme

Statistical Average of Spin Operators for Calculation of Three-Component Magnetization （II）： Solution of Equation

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Communications in Theoretical Physics 2006年第1期45卷 175-179页

作者： wang Huai-yu long Yao CHEN Nan-Xian Department of Physics Tsinghua University Beijing 100084 China

In this paper, the solution of Chebyshev equation with its argument being greater than 1 is obtained. The initial value of the derivative of the solution is the expression of magnetization, which is valid for any spin quantum number S. The Chebyshev equation is transformed from an ordinary differential equation obtained when we dealt with Heisenberg model, in order to calculate all three components of magnetization, by many-body Green＇s function under random phase approximation. The Chebyshev functions with argument being greater than 1 are discussed. This paper shows that the Chebyshev polynomials with their argument being greater than 1 have their physical application.

关键词： three-component magnetization Heisenberg model many-body Green's function method ordinary differential equation Chebyshev functions

An improved scheme for infectious bursal disease virus genotype classification based on both genome-segments A and B

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Journal of Integrative Agriculture 2021年第5期20卷 1372-1381页

作者： wang yu-long FAN Lin-jin JIANG Nan GAO Li LI Kai GAO yu-long LIU Chang-jun CUI Hong-yu PAN Qing ZHANG Yan-ping wang Xiao-mei QI Xiao-le Avian Immunosuppressive Diseases Division State Key Laboratory of Veterinary BiotechnologyHarbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin 150069P.R.China OIE Reference Laboratory for Infectious Bursal Disease Harbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin 150069P.R.China Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis Yangzhou 225009P.R.China

Infectious bursal disease(IBD)is caused by infectious bursal disease virus(IBDV),which has a genome consisting of two segments of double-stranded linear *** have been traditionally divided into four phenotypes based on their pathogenicity and antigenicity,including classic,variant,very virulent,and attenuated *** the emergences of divergent molecular characteristics of novel strains produced by continuous mutations and recombination,it is increasingly difficult to define new IBDV strains using the traditional descriptive classification *** most common classification scheme for IBDV with segmented genome is based solely on segment A,while the significance of segment B has been largely *** this study,an improved scheme for IBDV genotype classification based on the molecular characteristics of both VP2(a viral capsid protein encoded by segment A)and VP1(an RNA-dependent RNA polymerase protein encoded by segment B)was proposed for the first *** this scheme,IBDV was classified into nine genogroups of A and five genogroups of B,respectively;the genogroup A2 was further divided into four *** commonly used phenotypic classifications of classic,variant,very virulent,and attenuated IBDVs correspond to the A1 B1,A2 B1,A3 B2,and A8 B1 genotypes of the proposed classification *** novel variant IBDVs including the strains identified in this study were classified as belonging to genotype A2 d *** flexibility and versatility of this improved classification scheme will allow the unambiguous identification of existing and emerging IBDV strains,which will greatly facilitate molecular epidemiology studies of IBDV.

关键词： infectious bursal disease virus genotype VP1 VP2 novel variant strain

Sporadic E responds to the 2022 Tonga volcano eruptions recorded by the Meridian Project

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Earth and Planetary Physics 2025年第1期9卷 20-28页

作者： YangYi Sun Tao yu Jin wang Chi long School of Geophysics and Geomatics China University of Geosciences(Wuhan)Wuhan 430047China School of Physics and Electronic Science Guizhou Normal UniversityGuizhou 550001China

In this study,ionosonde observations over Fuke(19.5°N,109.1°E),Wuhan(30.5°N,114.4°E),and Mohe(53.5°N,122.3°E)were analyzed to demonstrate the responses of the sporadic E()to the severe atmospheric disturbances caused by the Tonga volcanic eruptions on January 15,*** most prominent signature was the disappearance of the layer after~10:00 UT over Wuhan and Fuke,which was attributed to the vertical drift caused by the *** occurred intermittently after 13:00 UT following the arrival of the tropospheric Lamb *** examine the causal mechanism for the intermittence,we also included data of horizontal winds in the mesosphere and lower thermosphere region recorded by the meteor radars at Wuhan and Mohe in this *** wind disturbances with periods of~20 hours contributed to the formation of the layer in the nighttime on January 15.

关键词： sporadic E Tonga eruptions neutral wind disturbances

The Dissymmetry of Friction Stir Welding Joints and Va-riable Polarity Plasma Arc Welding Joints Study

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稀有金属材料与工程 2011年第S4期40卷 84-89页

作者： Chen Shujun,wang long,yu Yang Beijing University of Technology Mechanical Engineering,Beijing100022,China Beijing Univ Technol Mech Engn Beijing 100022 Peoples R China

2219 aluminum alloys welding joints were prepared by Friction stir welding (FSW) and Variable polarity plasma arc welding (VPPAW).The microstructure of joints was characterized by means of OM,SEM,and *** measurements was performed to differentiate the joint zones and to evaluate the symmetry level of the joints with the help of nano-indentation *** dissymmetry of microstructure and mechanical properties was found both in FSW joint and VPPAW *** dissymmetry in FSW joint can not be suppressed due to the nature of the mixing head,but the symmetry and satisfactory welding joint can be obtained by changing the working pattern of VPPAW.

关键词： FSW VPPAW nano-indentation experiment "Half-leaf" zone dissymmetry

Mapping of QTLs for Nitrogen Use Efficiency and Related Traits in Rice(Oryza sativa L.)

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Agricultural Sciences in China 2005年第10期4卷 721-727页

作者： SHAN yu-hua wang yu-long PAN Xue-biao College of Environmental Sciences Yangzhou University Yangzhou 225009 P.R.China Rice Research Center Yangzhou University Yangzhou 225009 P.R.China

Current rice production is usually guaranteed by applying large amount of chemical nitrogen fertilizers to paddy soils. The improvement of nitrogen use efficiency is of great importance not only in rice production itself but in environmental protection as well. In this study we performed a molecular marker-based genetic analysis of nitrogen use efficiency for biomass production （NUEp） and several other related traits in a recombinant inbred line （RIL） population, derived from a cross of the parents of Shanyou 63, the most widely cultivated indica hybrid in China. A total of 12 QTLs were detected using interval mapping with a LOD threshold of 2.0, among which one QTL controlling NUEp was located at the marker interval of Waxy-C1496 on chromosome 6, and the rest 11 QTLs associated nitrogen concentration and accumulation in rice plant were positioned on chromosomes 1, 2, 4 and 6, respectively. Correlation between NUEp and other traits was analyzed and the implications of the results with respect to the improvement of the hybrid rice were discussed.

关键词： Rice Nitrogen use efficiency QTL mapping

Neuroprotective Effect of Fructus broussonetiae on APP/PS1 Mice via Upregulation of AKT/β-Catenin Signaling

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Chinese Journal of Integrative Medicine 2021年第2期27卷 115-124页

作者： LI Ying-hong JIN yu wang Xu-sheng CHEN Xiao-ling CHEN Hong-bo XU Ji DUAN Li-hong wang yu-long LUO Xun wang Qing-mei WU Zheng-zhi The First Affiliated Hospital of Shenzhen University(the Second People's Hospital of Shenzhen) ShenzhenGuangdong Province(518035)China The Shenzhen Key Laboratory of Health Sciences and Technology Graduate School at ShenzhenTsinghua UniversityBeijing(518055)China Graduate School Guangzhou Medical UniversityGuangzhouGuangdong(510182)China Stroke Biological Recovery Laboratory Spaulding Rehabilitation HospitalHarvard Medical SchoolCharlestownBostonMassachusetts(02129)USA Shenzhen Sanming Group Spaulding Rehabilitation HospitalHarvard Medical SchoolCharlestownBostonMassachusetts(02129)USA Kerry Rehabilitation Medicine Research Institute ShenzhenGuangdong Province(518048)China

Objective:To evaluate the mechanisms underlying the protective effect of Chinese herbal medicine Fructus broussonetiae(FB)in both mouse and cell models of Alzheimer’s disease(AD).Methods:APP/PS1 mice treated with FB for 2 months and vehicle-treated controls were run through the Morris water maze and object recognition test to evaluate learning and memory ***-Seq,Western blotting,and immunofluorescence staining were also conducted to evaluate the effects of FB treatment on various signaling pathways altered in APP/PS1 *** further explore the mechanisms underlying FB’s protective effect,PC-12 cells were treated with Aβ25–35 in order to establish an in vitro model of ***:FB-treated mice showed improved learning and memory capacity on both the Morris water maze and object recognition ***-seq of hippocampal tissue from APP/PS1 mice showed that FB had effects on multiple signaling pathways,specifically decreasing cell apoptotic signaling and increasing AKT and β-catenin ***,FB up-regulated both AKT and β-catenin signaling in PC-12 cells pre-treated with Aβ25–35,in which AKT positively regulated β-catenin *** study showed that AKT promoted β-catenin signaling via enhancing β-catenin(Ser552)***,AKT and β-catenin signaling inhibition both resulted in the attenuated survival of FB-treated cells,indicating the AKT/β-catenin signaling is a crucial mediator in FB promoted cell ***:FB exerted neuroprotective effects on hippocampal cells of APP/PS1 mice,as well as improved cell viability in an in vitro model of *** protective actions of FB occurred via the upregulation of AKT/β-catenin signaling.

关键词： Alzheimer disease Chinese medicine neuroprotective agent apoptosis regulatory proteins Fructus broussonetiae

Numerical Simulation of Root Growth Dynamics of CO_2-Enriched Hybrid Rice Cultivar Shanyou 63 Under Fully Open-Air Field Conditions

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Journal of Integrative Agriculture 2013年第5期12卷 781-787页

作者： SUN Cheng-ming LIU Tao GUO Dou-dou ZHUANG Heng-yang wang yu-long ZHU Jian-guo Key Lab of Crop Cultivation & Physiology Jiangsu Province/Agricultural CollegeYangzhou University Institute of Soil Science Chinese Academy of Sciences

Hybrid indica rice （Oryza sativa L.） cultivars play an important role in rice production system due to its heterosis, resistance to environmental stress, large panicle, and high yield potential. However, no attention has been given to its root growth dynamic responses to rising atmospheric CO2 concentration （[CO2]） in conjunction with nitrogen （N） availability. Free air COz enrichment （FACE） and N have significant effects on rice root growth. In this experiment, a hybrid cultivar Shanyou 63 （Oryza sativa L.） was used to study the effects of FACE and N levels on roots growth of rice. The results showed a significant increase in both adventitious root volume （ARV） and adventitious root dry weight （ARD） under the FACE treatment. The application of nitrogen also increased ARV and ARD, but the increase was smaller than that under FACE treatment. On the basis of the FACE experiment, numerical models for rice adventitious root volume and dry weight were built with the time as the driving factor. The models illustrated the dynamic development of rice adventitious root volume and dry weight after transplanting, regulated either by the influence factor of atmospheric [CO2] or by N application. The models were successfully used to predict ARV and ARD under FACE treatment in a different year with the predicted data being closely related to the actual experimental data. The model had guiding significance to growth regulation of rice root under the condition of atmospheric [CO2] rising in the future.

关键词： hybrid indica rice free air C02 enrichment (FACE) root volume root dry weight numerical model

DI-YOLOv5:An Improved Dual-Wavelet-Based YOLOv5 for Dense Small Object Detection

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IEEE/CAA Journal of Automatica Sinica 2025年第2期12卷 457-459页

作者： Zi-Xin Li yu-long wang Fei wang the Shanghai Key Laboratory of Power Station Automation Technology Shanghai University the School of Mechatronic Engineering and Automation Shanghai University IEEE the TAIHU Laboratory of Deepsea Technological Science China Ship Scientific Research Center

Dear Editor,This letter focuses on the fact that small objects with few pixels disappear in feature maps with large receptive fields, as the network deepens, in object detection tasks. Therefore, the detection of dens...

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