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| 1 | Impact of meteorological factors on the incidence of childhood hand,foot,and mouth disease(HFMD)analyzed by DLNMs-based time series approach显示文摘Background:Hand,foot,and mouth disease(HFMD)has become an emerging infectious disease in China in the last decade.There has been evidence that meteorological factors can influence the HFMD incidence,and understanding the mechanisms can help prevent and control HFMD.Methods:HFMD incidence data and meteorological data in Minhang District,Shanghai were obtained for the period between 2009 and 2015.Distributed lag non-linear models(DLNMs)were utilized to investigate the impact of meteorological factors on HFMD incidence after adjusting for potential confounders of long time trend,weekdays and holidays.Results:There was a non-linear relationship between temperature and HFMD incidence,the RR of 5th percentile compared to the median is 0.836(95%CI:0.671-1.042)and the RR of 95th percentile is 2.225(95%CI:1.774-2.792),and the effect of temperature varied across age groups.HFMD incidence increased with increasing average relative humidity(%)(RR=1.009,95%CI:1.005-1.015)and wind speed(m/s)(RR=1.197,95%CI:1.118-1.282),and with decreasing daily rainfall(mm)(RR=0.992,95%CI:0.987-0.997)and sunshine hours(h)(RR=0.966,95%CI:0.951-0.980).Conclusions:There were significant relationships between meteorological factors and childhood HFMD incidence in Minhang District,Shanghai.This information can help local health agencies develop strategies for the control and prevention of HFMD under specific climatic conditions. | Hongchao Qi Yue Chen Dongli Xu Hualin Su Longwen Zhan Zhiyin Xu Ying Huang Qianshan He Yi Hu Henry Lynn Zhijie Zhang | 2018 | Infectious Diseases of Poverty2018，7，1： | 17 |
| 2 | Controlled synthesis of porous spinel cobalt manganese oxides as efficient oxygen reduction reaction electrocatalysts显示文摘在这篇文章,我们报导一个灵巧的先锋热分解方法准备多孔的尖晶石类型钴锰氧化物(公司 x Mn 3-x 有可控制的形态学和水晶的结构的 O 4) 。在反应的盖住的代理人被发现在从立方的公司 2 MnO 4 nanorods 到四角形的公司 2 Mn 4 microspheres 和四角形的公司 2 Mn 4 立方体分别地。所有准备尖晶石材料展出灿烂的氧减小反应(ORR ) 与高稳定性一起的 electrocatalysis。特别地,立方的公司 2 有 0.9 V 的一个发作潜力的最好的表演和是的 0.72 V 的一个一半波浪潜力很关上到商业 Pt/C 的 MnO 4 nanorods 表演。同时,立方的公司 2 在场的 MnO 4 nanorods 有他们在 10,000 秒的一连续操作时间以后的 electrocatalytic 活动的可以忽略的降级的优异稳定性,它比商业 Pt/C electrocatalyst 好一些。 | Hongchao Yang Feng Hu Yejun Zhang Liyi Shi Qiangbin Wang | 2016 | Nano Research2016，9，1： | 11 |
| 3 | Remaining Useful Life Model and Assessment of Mechanical Products: A Brief Review and a Note on the State Space Model Method显示文摘The remaining useful life(RUL) prediction of mechanical products has been widely studied for online system performance reliability, device remanufacturing, and product safety(safety awareness and safety improvement). These studies incorporated many di erent models, algorithms, and techniques for modeling and assessment. In this paper, methods of RUL assessment are summarized and expounded upon using two major methods: physics model based and data driven based methods. The advantages and disadvantages of each of these methods are deliberated and compared as well. Due to the intricacy of failure mechanism in system, and di culty in physics degradation observation, RUL assessment based on observations of performance variables turns into a science in evaluating the degradation. A modeling method from control systems, the state space model(SSM), as a first order hidden Markov, is presented. In the context of non-linear and non-Gaussian systems, the SSM methodology is capable of performing remaining life assessment by using Bayesian estimation(sequential Monte Carlo). Being e ective for non-linear and non-Gaussian dynamics, the methodology can perform the assessment recursively online for applications in CBM(condition based maintenance), PHM(prognostics and health management), remanufacturing, and system performance reliability. Finally, the discussion raises concerns regarding online sensing data for SSM modeling and assessment of RUL. | Yawei Hu Shujie Liu Huitian Lu Hongchao Zhang | 2019 | Chinese Journal of Mechanical Engineering2019，32，1： | 6 |
| 4 | 1.82 wt.% Pt/N, P co-doped carbon overwhelms 20 wt.% Pt/C as a high-efficiency electrocatalyst for hydrogen evolution reaction显示文摘为氢进化反应的划算的 electrocatalysts (她的) 在可更新的精力的地里起一个关键作用。尽管巨大的努力被奉献给其他的材料的搜索, Pt/C 仍然是为 HER 的最有效的 electrocatalyst。不过,减少在设计 eletrocatalysts 装载磅具有意义。与装载的低磅,然而,它正在质问维持优秀催化性能。此处,新催化剂(Pt/NPC ) 被与 1.8 nm 的一条平均直径驱散磅 nanoparticles (PtNPs ) 在上准备一三维(3D ) 碳网络与 N 和 P 共同做。因为 N 和 P 掺杂物的高 electronegativity, PtNPs 一致地经由与磅和碳的高电子的亲密关系在碳网络上被驱散,负担得起 Pt/NPC 催化剂;Pt/NPC 展出了上级她的活动,归因于充电的捐赠从 N 和 P 引起到磅的磅 d 乐队的换至较低排挡。有 1.82 wt.% 装载的 ultralow 磅的 Pt/NPC 展出的结果表演优秀她的表演,它对应于一她比那大的集体活动 20.6 褶层在 20 mV 对 RHE 的过电位为广告 20% Pt/C 观察了。 | Changhong Wang Feng Hu Hongchao Yang Yejun Zhang Huan Lu Qiangbin Wang | 2017 | Nano Research2017，10，1： | 5 |
| 5 | An Effective and Scalable VM Migration Strategy to Mitigate Cross-VM Side-Channel Attacks in Cloud显示文摘Co-residency of virtual machines(VMs) of different tenants on the same physical platform would possibly lead to cross-VM side-channel attacks in the cloud. While most of current countermeasures fail for real or immediate deployment due to their requirement for modification of virtualization structure, we adopt dynamic migration, an inherent mechanism of the cloud platform, as a general defense against this kind of threats. To this end, we first set up a unified practical information leakage model which shows the factors affecting side channels and describes the way they influence the damage due to side-channel attacks. Since migration is adopted to limit the time duration of co-residency, we envision this defense as an optimization problem by setting up an Integer Linear Programming(ILP) to calculate optimal migration strategy, which is intractable due to high computational complexity. Therefore, we approximate the ILP with a baseline genetic algorithm, which is further improved for its optimality and scalability. Experimental results show that our migration-based defense can not only provide excellent security guarantees and affordable performance cost in both theoretical simulation and practical cloud environment, but also achieve better optimality and scalability than previous countermeasures. | Chao Yang Yunfei Guo Hongchao Hu Wenyan Liu Yawen Wang | 2019 | China Communications2019，16，4： | 3 |
| 6 | Defensive deception framework against reconnaissance attacks in the cloud with deep reinforcement learning显示文摘Implementing defensive deception in the cloud is promising to proactively counter reconnaissance attack. This technique presents decoys to camouflage cloud assets and distracts attack resource. However,the major challenge is to develop an effective deception strategy to orchestrate digital decoys. To address this issue, we propose a deep reinforcement learning(DRL)-based defensive deception framework. First,we formulate a utility function, which mathematically models underlying threats associated with common vulnerabilities among virtual machines in the cloud. Then, we customize training interfaces and the neural networks for a DRL agent. The reward function reflects the effectiveness of asset concealment and the waste of attack resources, referring to a comprehensive defense goal. Finally, the well-trained DRL agent generates the optimal defense strategy. It specifies a more granular deception strategy than existing proposals. Simulation results show that the proposed framework leads to a 7.87% average advantage in realizing the comprehensive defense goal. Moreover, it can stably improve the concealment degree of cloud assets up to 20.58%, and increase the attack cost up to 40.40%. This study shows that it is promising to improve cloud security with deception defense and artificial intelligence techniques. | Huanruo LI Yunfei GUO Shumin HUO Hongchao HU Penghao SUN | 2022 | Science China(Information Sciences)2022，65，7： | 3 |
| 7 | Design and Implementation of an SDN-Enabled DNS Security Framework显示文摘The Domain Name System(DNS) is suffering from the vulnerabilities exploited to launch the cache poisoning attack. Inspired by biodiversity, we design and implement a non-intrusive and tolerant secure architecture Multi-DNS(MDNS) to deal with it. MDNS consists of Scheduling Proxy and DNS server pool with heterogeneous DNSs in it. And the Scheduling Proxy dynamically schedules m DNSs to provide service in parallel and adopts the vote results from majority of DNSs to decide valid replies. And benefit from the centralized control of software defined networking(SDN), we implement a proof of concept for it. Evaluation results prove the validity and availability of MDNS and its intrusion/fault tolerance, while the average delay can be controlled in 0.3s. | Zhenpeng Wang Hongchao Hu Guozhen Cheng | 2019 | China Communications2019，16，2： | 3 |
| 8 | Acoustic wave detection of laser shock peening显示文摘 | Jiajun Wu Jibin Zhao Hongchao Qiao Xuejun Liu Yinuo Zhang Taiyou Hu | 2018 | Opto-Electronic Advances2018，1，9： | 3 |
| 9 | Toward a Scalable SDN Control Mechanism via Switch Migration显示文摘Dynamic Controller Provisioning Problem(DCPP) is a key problem for scalable SDN. Previously, the solution to this problem focused on adapting the number of controllers and their locations with changing network conditions, but ignored balancing control loads via switch migration. In this paper, we study a scalable control mechanism to decide which switch and where it should be migrated for more balanced control plane, and we define it as Switch Migration Problem(SMP). The main contributions of this paper are as follows. First, we define a SDN model to describe the relation between controllers and switches from the view of loads. Based on this model, we form SMP as a Network Utility Maximization(NUM) problem with the objective of serving more requests under available control resources. Second, we design a synthesizing distributed algorithm for SMP--- Distributed Hopping Algorithm(DHA), by approximating our optimal objective via Log-Sum-Exp function. In DHA, individual controller performs algorithmic procedure independently. With the solution space F, we prove that the optimal gap caused by approximation is at most 1/βlog|F|, and DHA procedure is equal to implementation of a time-reversible Markov Chain process. Finally, the results are corroborated by several numerical simulations. | Guozhen Cheng Hongchang Chen Hongchao Hu Zhiming Wang | 2017 | China Communications2017，14，1： | 3 |
| 10 | Enabling network function combination via service chain instantiation显示文摘 | Guozhen Cheng Hongchang Chen Hongchao Hu Zhiming Wang Julong Lan | 2015 | Computer Networks2015，，： | 2 |
| 11 | Roof model recommendation for complex buildings based on combination rules and symmetry features in footprints显示文摘Currently,very few roof shape information for complex buildings is available on OSM.Moreover,additional data requirements(e.g.3D point clouds)limit the applicability of many roof reconstruction approaches.To mitigate this issue,we propose an approach to roof shape recommendations for complex buildings by exploring the inherited characteristics of building footprints:the disclosure of rectangles combinations in a partition of footprints and the symmetrical features of footprints.First,it decomposes a complex footprint into rectangles by using an advanced minimal non-overlapping cover algorithm.Second,a graph-based symmetry detection algorithm is proposed to identify all the symmetrical sub-clusters in partitions.Then,a set of selection rules are defined to rank partitions,and the best ones are chosen for roof shape recommendation.Finally,a set of combination rules and a symmetry rule are defined.It enables to evaluate the probability of a footprint being a certain combination of roof shapes.Experimental results show the growth of the probability of correctly recommending roof shapes for single rectangles and buildings from a prior probability of 17–45%and from a prior probability of 0.29–14.3%,removing 60%and 93%of the incorrect roof shape options,respectively. | Xuke Hu Hongchao Fan Alexey Noskov | 2018 | International Journal of Digital Earth2018，11，10： | 2 |
| 12 | Secure Cloud Architecture for 5G Core Network显示文摘Service-based architecture(SBA)is a profound advancement in the novel 5G Core network(5GC).Existing studies show that SBA can benefit from cloud computing to achieve extensibility,modularity,reusability,and openness.It also brings security problems(e.g.,hypervisor hijacking,and malware injection).To provide secure 5G services,we propose a service-based cloud architecture called Mimicloud for 5GC based on dynamic and heterogeneous techniques.Mimicloud provides flexible reconfiguration mechanisms to protect containers and eliminate all attack knowledge obtained from adversaries.We use multiple containers to execute crucial services and ensure security with crosscheck.Mimicloud employs heterogeneous components to prevent multiple containers from being breached through the same vulnerabilities.Experimental results show that Mimicloud can effectively strengthen the security of the 5GC.The performance overhead is analyzed in order to demonstrate its scalability. | LI Lingshu WU Jiangxing HU Hongchao LIU Wenyan GUO Zehua | 2021 | Chinese Journal of Electronics2021，30，3： | 2 |
| 13 | Orchestrating Network Functions in Software-Defined Networks显示文摘Software.defined networking(SDN) enables third.part companies to participate in the network function innovations. A number of instances for one network function will inevitably co.exist in the network. Although some orchestration architecture has been proposed to chain network functions, rare works are focused on how to optimize this process. In this paper, we propose an optimized model for network function orchestration, function combination model(FCM). Our main contributions are as following. First, network functions are featured with a new abstraction, and are open to external providers. And FCM identifies network functions using unique type, and organizes their instances distributed over the network with the appropriate way. Second, with the specialized demands, we can combine function instances under the global network views, and formulate it into the problem of Boolean linear program(BLP). A simulated annealing algorithm is designed to approach optimal solution for this BLP. Finally, the numerical experiment demonstrates that our model can create outstanding composite schemas efficiently. | Hongchao Hu Lin Pang Zhenpeng Wang Guozhen Cheng | 2017 | China Communications2017，14，2： | 2 |
| 14 | Synthesis and conductive properties of a novel azobenzene-based conjugated polymer显示文摘 | Hu Hongchao Cui Yingde | 2015 | Synthetic Metals2015，，： | 2 |
| 15 | Synthesis and Kinetics of Hydrogenated Rosin Dodecyl Ester as an Environmentally Friendly Plasticizer显示文摘The plasticizer is an important polymer material additive.Non-toxic and environmentally friendly plasticizers are developed recently in order to decrease fossil fuel reserves,serious environmental pollution and the toxicity of phthalate esters.In this study,a new,efficient and environmentally friendly plasticizer of hydrogenated rosin dodecyl ester was prepared by an esterification reaction of hydrogenated rosin and dodecanol.The influences of different reaction conditions(including different catalysts,the catalyst concentration,the ratio of the reactants,reaction temperature,and reaction time)on the esterification yield are examined and discussed.Hydrogenated rosin dodecyl ester with 71.8%yield was synthesized under the optimized reaction conditions(1:0.8 molar ratio of rosin to dodecanol,1 mol%tetrabutyl titanate concentration,and 210℃for 6 h).The esterification reaction is a second-order reaction,and kinetic calculations showed that the activation energy is 39.77 KJ·mol^(−1).The structure of the hydrogenated rosin dodecyl ester was confirmed by FT-IR spectroscopy and^(13)C NMR spectrum.Besides,the thermal stability of target product(hydrogenated rosin dodecyl ester)was also tested by thermal gravimetric analysis(TGA),which showed a good thermal stability. | Qiaoguang Li Sheng Gong Jie Yan Hongchao Hu Xugang Shu Hanqing Tong Zhiye Cai | 2020 | Journal of Renewable Materials2020，8，3： | 2 |
| 16 | Influence of 1.0 wt% Li on Precipitates in Al-Zn-Mg-Cu Alloy显示文摘微观结构控制总是在提高高张力艾尔合金的性质起一个关键作用。由 1.0 wt% 李的增加改进 7000 系列合金的微观结构的尝试很长时间,但是无系统地被做了。这篇文章由使用微分扫描 Li 免费的 Al-Zn-Mg-Cu 合金把 1.0 wt%包含 Li Al-Zn-Mg-Cu 合金的微结构特征与那些作比较 calorimetric (DSC ) 技术, Vickers microhardness 和传播电子显微镜学(TEM ) 。结果在 1.0 wt%包含 Li Al-Zn-Mg-Cu 合金显示出吉尼尔·普雷斯顿(GP ) 地区,或阶段的优势,并且证实李的能力延迟率猛抛生长并且变粗。 | Wei Fang Li Jinshan Hu Rui Kou Hongchao | 2008 | Chinese Journal of Aeronautics2008，21，6： | 1 |
| 17 | The Surface Energy Budget and Its Impact on the Freeze-thaw Processes of Active Layer in Permafrost Regions of the Qinghai-Tibetan Plateau显示文摘The surface energy budget is closely related to freeze-thaw processes and is also a key issue for land surface process research in permafrost regions.In this study,in situ data collected from 2005 to 2015 at the Tanggula site were used to analyze surface energy regimes,the interaction between surface energy budget and freeze-thaw processes.The results confirmed that surface energy flux in the permafrost region of the Qinghai-Tibetan Plateau exhibited obvious seasonal variations.Annual average net radiation(R_(n))for 2010 was 86.5 W m^(-2),with the largest being in July and smallest in November.Surface soil heat flux(G_(0))was positive during warm seasons but negative in cold seasons with annual average value of 2.7 W m^(-2).Variations in R_(n) and G_(0) were closely related to freeze-thaw processes.Sensible heat flux(H)was the main energy budget component during cold seasons,whereas latent heat flux(LE)dominated surface energy distribution in warm seasons.Freeze-thaw processes,snow cover,precipitation,and surface conditions were important influence factors for surface energy flux.Albedo was strongly dependent on soil moisture content and ground surface state,increasing significantly when land surface was covered with deep snow,and exhibited negative correlation with surface soil moisture content.Energy variation was significantly related to active layer thaw depth.Soil heat balance coefficient K was>1 during the investigation time period,indicating the permafrost in the Tanggula area tended to degrade. | Junjie MA Ren LI Hongchao LIU Zhongwei HUANG Tonghua WU Guojie HU Yao XIAO Lin ZHAO Yizhen DU Shuhua YANG | 2022 | Advances in Atmospheric Sciences2022，39，1： | 1 |
| 18 | The effect of M23C6 carbides on the formation of grain boundary serrations in a wrought Ni-based superalloy 显示文摘 | Li Jiang Rui Hu Hongchao Kou | 2012 | Materials Science and Engineering A2012，536，： | 1 |
| 19 | Strong performance guarantees for asynchronous crossbar schedulers显示文摘 | Hu Hongchao Guo YunFei Yi Peng | 2011 | IET COMMU- NICATIONS2011，13，5： | 1 |
| 20 | Data-driven approach to learning salience models of indoor landmarks by using genetic programming显示文摘In landmark-based way-finding,determining the most salient landmark from several candidates at decision points is challenging.To overcome this problem,current approaches usually rely on a linear model to measure the salience of landmarks.However,linear models are not always able to establish an accurate quantitative relationship between the attributes of a landmark and its perceived salience.Furthermore,the numbers of evaluated scenes and of volunteers participating in the testing of these models are often limited.With the aim of overcoming these gaps,we propose learning a non-linear salience model by means of genetic programming.We compared our proposed approach with conventional algorithms by using photographs of two hundred test scenes collected from two shopping malls.Two hundred volunteers who were not in these environments were asked to answer questionnaires about the collected photographs.The results from this experiment showed that in 76%of the cases,the most salient landmark(according to the volunteers’perception)was correctly predicted by our proposed approach.This accuracy rate is considerably higher than the ones achieved by conventional linear models. | Xuke Hu Lei Ding Jianga Shang Hongchao Fan Tessio Novack Alexey Noskov Alexander Zipfa | 2020 | International Journal of Digital Earth2020，13，11： | 1 |
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