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Joint Spectrum Partition and Performance Analysis of Full-Duplex D2D Communications in Multi-Tier Wireless Networks

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Computers, Materials & Continua 2019年第7期61卷 171-184页

作者： Yueping Wang Xuan zhang yixuan zhang Nanjing University of Aeronautics and Astronautics NanjingChina Huawei Corporation NanjingChina Huawei Research Center Singapore

Full-duplex(FD)has been recognized as a promising technology for future 5G networks to improve the spectrum ***,the biggest practical impediments of realizing full-duplex communications are the presence of self-interference,especially in complex cellular *** the current development of self-interference cancellation techniques,full-duplex has been considered to be more suitable for device-to-device(D2D)and small cell communications which have small transmission range and low transmit *** this paper,we consider the full-duplex D2D communications in multi-tier wireless networks and present an analytical model which jointly considers mode selection,resource allocation,and power ***,we consider a distance based mode selection *** performance analysis of different D2D communications modes are performed based on stochastic geometry,and tractable analytical solutions are *** we investigate the optimal resource partitions between dedicated D2D mode and cellular *** results validate the theoretical anlaysis and indicate that with appropriate proportions of users operated in different transmission modes and optimal partitioning of spectrum,the performance gain of FD-D2D communication can be achieved.

关键词： Full-duplex device-to-device communications HetNets power control spectrum partition

Privacy-Aware Service Subscription in People-Centric Sensing:A Combinatorial Auction Approach

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Computers, Materials & Continua 2019年第7期61卷 129-139页

作者： Yuanyuan Xu Shan Li yixuan zhang Hohai University Nanjing211100China Nanjing University of Aeronautics and Astronautics Nanjing211106China Huawei Research Center Singapore Metropolis Tower 2Singapore

With the emergence of ambient sensing technologies which combine mobile crowdsensing and Internet of Things,large amount of people-centric data can be obtained and utilized to build people-centric *** that the service quality is highly related to the privacy level of the *** this paper,we investigate the problem of privacy-aware service subscription in people-centric *** efficient resource allocation framework using a combinatorial auction(CA)model is ***,the resource allocation problem that maximizes the social welfare in view of varying requirements of multiple users is formulated,and it is solved by a proposed computationally tractable solution ***,the prices of allocated resources that winners need to pay are figured out by a designed *** results demonstrate the effectiveness of the proposed scheme.

关键词： Privacy-aware service subscription combinatorial auction winner determination

Performance analysis of global HYCOM flow field using Argo profiles

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International Journal of Digital Earth 2023年第1期16卷 3536-3559页

作者： yixuan zhang Songshan Yue Kai Xu Zhuo zhang Liangcheng Zhou Yihan zhang Guonian Lü School of Geography Key Laboratory of Virtual Geographic Environment(Ministry of Education of PRC)Nanjing Normal UniversityNanjingPeople’s Republic of China State Key Laboratory Cultivation Base of Geographical Environment Evolution(Jiangsu Province) NanjingPeople’s Republic of China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application NanjingPeople’s Republic of China

Flow field data generated by ocean models are important for simulating ocean currents and circulation patterns,which are essential components in digital Earth *** evaluate the accuracy of model-simulatedflow felds,Array for Real-timeGeostrophic Oceanography(Argo)float observations can be considered *** this study,a novel method for comparing Argo profiles with 3-dimensional trajectories obtained by simulating Argo floats in Hybrid Coordinate Ocean Model(HYCOM)-provided flow fields was *** and subsurface trajectories were calculated,and their spatial matching characteristics were *** results demonstrated that(1)the HYCOM surface and subsurface flow felds generally conform to the basic characteristics and trends of ocean currents;(2)the HYCOM sea surface current field error pattern exhibits a symmetrical distribution centered on the equator in the Northern and Southern Hemispheres and increases with increasing latitude;and(3)the HYCOM subsurface flow field exhibits regional differences,with the largest differences in the Gulf Stream,North Atlantic Warm Current,and Westerly Wind Drift *** analysis of the disparities between HYCOM and Argo data,the effectiveness of using model simulation data can be enhanced,and the accuracy and dependability of ocean models can be improved.

关键词： HYCoOM Argo floats ocean flow field trajectory matching ocean modeling

Autonomous atomic Hamiltonian construction and active sampling of X-ray absorption spectroscopy by adversarial Bayesian optimization

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npj Computational Materials 2023年第1期9卷 1890-1900页

作者： yixuan zhang Ruiwen Xie Teng Long Damian Günzing Heiko Wende Katharina J.Ollefs Hongbin zhang Institute of Materials Science Technical University of Darmstadt64287 DarmstadtGermany School of Materials Science and Engineering Shandong University250061 JinanChina Faculty of Physics University of Duisburg-Essen47057 DuisburgGermany

X-ray absorption spectroscopy(XAS)is a well-established method for in-depth characterization of electronic *** practice hundreds of energy-points should be sampled during the measurements,and most of them are ***,it is also tedious to estimate reasonable parameters in the atomic Hamiltonians for mechanistic *** implement an Adversarial Bayesian optimization(ABO)algorithm comprising two coupled BOs to automatically fit the many-body model Hamiltonians and to sample effectively based on active learning(AL).Taking NiO as an example,we find that less than 30 sampling points are sufficient to recover the complete XAS with the corresponding crystal field and charge transfer models,which can be selected based on intuitive hypothesis *** applications on the experimental XAS spectra reveal that less than 80 sampling points give reasonable XAS and reliable atomic model *** ABO algorithm has a great potential for future applications on automated physics-driven XAS analysis and AL sampling.

关键词： structure Hamiltonian absorption

Constrained crystals deep convolutional generative adversarial network for the inverse design of crystal structures

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npj Computational Materials 2021年第1期7卷 588-594页

作者： Teng Long Nuno M.Fortunato Ingo Opahle yixuan zhang Ilias Samathrakis Chen Shen Oliver Gutfleisch Hongbin zhang Institute of Materials Science Technische Universität DarmstadtDarmstadtGermany

Autonomous materials discovery with desired properties is one of the ultimate goals for materials science,and the current studies have been focusing mostly on high-throughput screening based on density functional theory calculations and forward modeling of physical properties using machine *** the deep learning techniques,we have developed a generative model,which can predict distinct stable crystal structures by optimizing the formation energy in the latent *** is demonstrated that the optimization of physical properties can be integrated into the generative model as on-top screening or backward propagator,both with their own *** the generative models on the binary Bi-Se system reveals that distinct crystal structures can be obtained covering the whole composition range,and the phases on the convex hull can be reproduced after the generated structures are fully relaxed to the *** method can be extended to multicomponent systems for multi-objective optimization,which paves the way to achieve the inverse design of materials with optimal properties.

关键词： properties crystal inverse

Fluorescent Double Network Hydrogels with Ionic Responsiveness and High Mechanical Properties for Visual Detection

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Journal of Wuhan University of Technology(Materials Science) 2024年第2期39卷 487-496页

作者：郑湾 LIU Lerong Lü Hanlin WANG Yuhang LI Feihu zhang yixuan 陈艳军 WANG Yifeng School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

We developed a fluorescent double network hydrogel with ionic responsiveness and high mechanical properties for visual *** nanocomposite hydrogel of laponite and polyacrylamide serves as the first network,while the ionic cross-linked hydrogel of terbium ions and sodium alginate serves as the second *** double-network structure,the introduction of nanoparticles and the reversible ionic crosslinked interactions confer high mechanical properties to the *** ions are not only used as the ionic cross-linked points,but also used as green emitters to endow hydrogels with fluorescent *** the basis of the “antenna effect” of terbium ions and the ion exchange interaction,the fluorescence of the hydrogels can make selective responses to various ions(such as organic acid radical ions,transition metal ions) in aqueous solutions,which enables a convenient strategy for visual detection toward ***,the fluorescent double network hydrogel fabricated in this study is promising for use in the field of visual sensor detection.

关键词： visual detection ionic responsiveness fluorescent hydrogels double network hydrogels mechanical property

Signaling pathways in cancer metabolism:mechanisms and therapeutic targets

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Signal Transduction and Targeted Therapy 2023年第6期8卷 2550-2576页

作者： Mengshu You Zhuolin Xie Nan zhang yixuan zhang Desheng Xiao Shuang Liu Wei Zhuang Lili Li Yongguang Tao Hunan Key Laboratory of Cancer Metabolism Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of MedicineCentral South University410078ChangshaHunanChina NHC Key Laboratory of Carcinogenesis(Central South University) Cancer Research Institute and School of Basic MedicineCentral South University410078ChangshaHunanChina Department of Pathology Key Laboratory of Carcinogenesis and Cancer InvasionMinistry of EducationXiangya HospitalCentral South University410078ChangshaHunanChina Department of Pathology Xiangya HospitalCentral South University410008ChangshaHunanChina Department of Oncology Institute of Medical SciencesXiangya HospitalCentral South University410008ChangshaHunanChina Department of Thoracic Surgery Xiangya HospitalCentral South University410008ChangshaHunanPeople’s Republic of China Cancer Epigenetics Laboratory Department of Clinical OncologyState Key Laboratory of Translational OncologySir YK Pao Centre for Cancer and Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongMa Liu ShuiHong KongChina

A wide spectrum of metabolites(mainly,the three major nutrients and their derivatives)can be sensed by specific sensors,then trigger a series of signal transduction pathways and affect the expression levels of genes in epigenetics,which is called metabolite *** body regulates metabolism,immunity,and inflammation by metabolite sensing,coordinating the pathophysiology of the host to achieve balance with the external *** reprogramming in cancers cause different phenotypic characteristics of cancer cell from normal cell,including cell proliferation,migration,invasion,angiogenesis,*** disorders in cancer cells further create a microenvironment including many kinds of oncometabolites that are conducive to the growth of cancer,thus forming a vicious *** the same time,exogenous metabolites can also affect the biological behavior of ***,we discuss the metabolite sensing mechanisms of the three major nutrients and their derivatives,as well as their abnormalities in the development of various cancers,and discuss the potential therapeutic targets based on metabolite-sensing signaling pathways to prevent the progression of cancer.

关键词： metabolism therapeutic immunity

Combination therapy using microwave ablation and d-mannose-chelated iron oxide nanoparticles inhibits hepatocellular carcinoma progression

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Acta Pharmaceutica Sinica B 2022年第9期12卷 3475-3485页

作者： Rui Cui Luo Wang Dongyun zhang Kun zhang Jianping Dou Linan Dong yixuan zhang Jiapeng Wu Longfei Tan Jie Yu Ping Liang Department of Interventional Ultrasound PLA General HospitalBeijing 100853China Department of Medical Ultrasonics the Sixth Affiliated HospitalSun Yat-sen UniversityGuangzhou 510655China Laboratory of Controllable Preparation and App Department of Medical Ultrasound Shanghai Tenth People's HospitalTongji University School of MedicineShanghai 200072China Ultrasound Research and Education Institute Tongji University School of MedicineShanghai 200072China Laboratory of Controllable Preparation and Application of Nanomaterials Key Laboratory of CryogenicsTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

Despite being a common therapy for hepatocellular carcinoma(HCC),insufficient thermal ablation can leave behind tumor residues that can cause *** is believed to augment M2 inflammatory macrophages that usually play a pro-tumorigenic *** address this problem,we designed D-mannose-chelated iron oxide nanoparticles(man-IONPs) to polarize M2-like macrophages into the antitumor Ml *** vitro and in vivo experiments demonstrated that man-IONPs specifically targeted M2-like macrophages and accumulated in peri-ablation zones after macrophage infiltration was augmented under insufficient microwave ablation(MWA).The nanoparticles simultaneously induced polarization of pro-tumorigenic M2 macrophages into antitumor M1 phenotypes,enabling the transformation of the immunosuppressive microenvironment into an immunoactivating ***-MWA macrophage polarization exerted robust inhibitory effects on HCC progression in a well-established orthotopic liver cancer mouse ***,combining thermal ablation with man-IONPs can salvage residual tumors after insufficient *** results have strong potential for clinical translation.

关键词： Microwave ablation Hepatocellular carcinoma Iron oxide nanoparticle Macrophage polarization Targeted therapy

Identification of two novel B-cell epitopes on the nucleocapsid protein of porcine deltacoronavirus

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Virologica Sinica 2022年第2期37卷 303-306页

作者： Haojie Ren Xiaoguang Yan Lintao Liu yixuan zhang Qianqian Li Xiumei Li Hui Hu College of Veterinary Medicine Henan Agricultural UniversityZhengzhou450002China Key Laboratory for Animal-derived Food Safety of Henan Province Zhengzhou450002China Luoyang Laipson Information Technology Co. LtdLuoyang471026China

Dear Editor,Porcine deltacoronavirus(PDCoV)is a novel discovered swine enteric coronavirus which can cause diarrhea and dehydration in pigs,particularly in neonatal piglets(Jung et al.,2016).At present,there are no commercial vaccines available for PDCo *** control PDCoV transmission and perform antiviral therapy efficiently,a rapid and accurate diagnostic method to detect PDCo V is needed.

关键词： swine delta needed