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| 1 | Identity-based public auditing for cloud storage systems against malicious auditors via blockchain显示文摘Cloud storage systems provide users with convenient data storage services, which allow users to access and update outsourced data remotely. However, these cloud storage services do not guarantee the integrity of the data that users store in the cloud. Thus, public auditing is necessary, in which a third-party auditor(TPA) is delegated to audit the integrity of the outsourced data. This system allows users to enjoy on-demand cloud storage services without the burden of continually auditing their data integrity. However,certain TPAs might deviate from the public auditing protocol and/or collude with the cloud servers. In this article, we propose an identity-based public auditing(IBPA) scheme for cloud storage systems. In IBPA,the nonces in a blockchain are employed to construct unpredictable and easily verified challenge messages,thereby preventing the forging of auditing results by malicious TPAs to deceive users. Users need only to verify the TPAs' auditing results in batches to ensure the integrity of their data that are stored in the cloud.A detailed security analysis shows that IBPA can preserve data integrity against various attacks. In addition,a comprehensive performance evaluation demonstrates that IBPA is feasible and efficient. | Jingting XUE Chunxiang XU Jining ZHAO Jianfeng MA | 2019 | Science China(Information Sciences)2019，62，3： | 17 |
| 2 | Comparison of the Global Energy Cycle between Chinese Reanalysis Interim and ECMWF Reanalysis显示文摘The global energy cycle is a diagnostic metric widely used to gauge the quality of datasets. In this paper, the 'Mixed Space-Time Domain' method for diagnosis of energy cycle is evaluated by using newly developed datasets-the Chinese Reanalysis Interim (CRAI) and ECMWF Reanalysis version 5 (ERA5), over a 7-yr period (2010-16) on seasonal and monthly timescales. The results show that the energy components calculated from the two reanalysis datasets are highly consistent;however, some components in the global energy integral from CRAI are slightly larger than those from ERA5. The main discrepancy in the energy components stems from the conversion of baroclinic process, whereas the dominant difference originates from the conversion from stationary eddy available potential energy to stationary eddy kinetic energy (CES), which is caused by systematic differences in the temperature and vertical velocity in low-mid latitudes of the Northern Hemisphere and near the Antarctic, where there exist complex terrains. Furthermore, the monthly analysis reveals that the general discrepancy in the temporal variation between the two datasets also lie mainly in the CES as well as corresponding generation and dissipation rates. | Bin ZHAO Bo ZHANG Chunxiang SHI Jingwei LIU Lipeng JIANG | 2019 | Journal of Meteorological Research2019，33，3： | 14 |
| 3 | The historical and current research progress on jujube–a superfruit for the future显示文摘Jujube(Ziziphus jujuba Mill.),or Chinese date,is the most important species of Rhamnaceae,a large cosmopolitan family,and is one of the oldest cultivated fruit trees in the world.It originates from the middle and lower reaches of the Yellow River,the‘mother river’of the Chinese people.It is distributed in at least 48 countries on all continents except Antarctica and is becoming increasingly important,especially in arid and semiarid marginal lands.Based on a systematic analysis of the unique characteristics of jujube,we suggest that it deserves to be recognized as a superfruit.We summarized historical research achievements from the past 3000 years and reviewed recent research advances since 1949 in seven fields,including genome sequencing and application,germplasm resources and systematic taxonomy,breeding and genetics,cultivation theory and techniques,pest control,postharvest physiology and techniques,and nutrition and processing.Based on the challenges facing the jujube industry,we discuss eight research aspects to be focused on in the future. | Mengjun Liu Jiurui Wang Lili Wang Ping Liu Jin Zhao Zhihui Zhao Shengrui Yao Florin Stănică Zhiguo Liu Lixin Wang Changwei Ao Li Dai Xiansong Li Xuan Zhao Chunxiang Jia | 2020 | Horticulture Research2020，7，1： | 10 |
| 4 | Risk analysis for the highly pathogenic avian influenza in China's Mainland using meta-modeling显示文摘A logistic model was employed to correlate the outbreak of highly pathogenic avian influenza (HPAI) with related environmental factors and the migration of birds. Based on MODIS data of the normalized difference vegetation index, environmental factors were considered in generating a probability map with the aid of logistic regression. A Bayesian maximum entropy model was employed to explore the spatial and temporal correlations of HPAI incidence. The results show that proximity to water bodies and national highways was statistically relevant to the occurrence of HPAI. Migratory birds, mainly waterfowl, were important infection sources in HPAI transmission. In addition, the HPAI outbreaks had high spatiotemporal autocorrelation. This epidemic spatial range fluctuated 45 km owing to different distribution patterns of cities and water bodies. Furthermore, two outbreaks were likely to occur with a period of 22 d. The potential risk of occurrence of HPAI in China's Mainland for the period from January 23 to February 17, 2004 was simulated based on these findings, providing a useful meta-model framework for the application of environmental factors in the prediction of HPAI risk. | CAO ChunXiang XU Min CHANG ChaoYi XUE Yong ZHONG ShaoBo FANG LiQun CAO WuChun ZHANG Hao GAO MengXu HE QiSheng ZHAO Jian CHEN Wei ZHENG Sheng LI XiaoWen | 2010 | Chinese Science Bulletin2010，55，36： | 9 |
| 5 | Nanoindentation characteristics of cement with different mineral admixtures显示文摘In order to determine the effects of different mineral admixtures including fly ash(FA),blast furnace slag(BFS) and metakaolin(MK) on hydration product phases from the nanoscale structure perspective,nanoindentation characteristics of the samples with similar 28-day strengths have been investigated.The results indicate that the volume fractions of porosity in porosity and hydration product phases of the samples with the same kind of mineral admixture are almost equal to each other,and are greater than that of the sample without mineral admixture.Mineral admixtures especially MK can decrease remarkably the volume fractions of CH in porosity and hydration product phases,and there exists a good linear relationship between the(Al+Si)/Ca molar ratio of cementitious materials chemical compositions and the volume fraction of HD C-S-H gel in C-S-H gel.Therefore,it is possible to predict the volume fraction change of HD C-S-H gel in C-S-H gel by simply calculating the(Al+Si)/Ca molar ratio of cementitious materials with similar 28-day strengths under the constant water-binder ratio. | HE ZhiHai QIAN ChunXiang ZHANG Yi ZHAO Fei HU YingBo | 2013 | Science China(Technological Sciences)2013，56，5： | 7 |
| 6 | Microstructure and corrosion behavior of Mg-Zn-Y-Al alloys with long-period stacking ordered structures显示文摘Mg97−xZn1Y2Alx alloys with long-period stacking ordered(LPSO)structures were prepared by conventional casting method.The optical microscopy(OM),X-ray diffraction(XRD)and the scanning electron microscope(SEM)equipped with energy dispersive X-ray spectroscopy(EDS)were used to analyze the microstructure of the alloys with different compositions.Immersion test and electrochemical measurement were used to evaluate the corrosion behavior of the alloys at room temperature,and the corrosive medium is 3.5%NaCl aqueous solution.The results showed that,with the increasing aluminum(Al)addition,exceptα-Mg and LPSO phases,new phases also emerged on the grain boundaries.At the same time,the zigzag part of LPSO phases disappeared,and the boundaries between LPSO phases andα-Mg became smooth.Furthermore,the addition of Al to Mg-Zn-Y alloys could hinder the activity of cathodic hydrogen evolution reaction and improve the uniformity and compactness of the protective surface film,thus,enhanced the corrosion resistance of Mg-Zn-Y alloys. | Dan Wang Jinshan Zhang Jidong Xu Zilong Zhao Weili Cheng Chunxiang Xu | 2014 | Journal of Magnesium and Alloys2014，2，1： | 6 |
| 7 | The novel H1N1 Influenza A global airline transmission and early warning without travel containments显示文摘A novel influenza A (H1N1) has been spreading worldwide. Early studies implied that international air travels might be key cause of a severe potential pandemic without appropriate containments. In this study, early outbreaks in Mexico and some cities of United States were used to estimate the preliminary epidemic parameters by applying adjusted SEIR epidemiological model, indicating transmissibility infectivity of the virus. According to the findings, a new spatial allocation model totally based on the real-time airline data was established to assess the potential spreading of H1N1 from Mexico to the world. Our estimates find the basic reproductive number R0 of H1N1 is around 3.4, and the effective reproductive number fall sharply by effective containment strategies. The finding also implies Spain, Canada, France, Panama, Peru are the most possible country to be involved in severe endemic H1N1 spreading. | CHANG ChaoYi CAO ChunXiang WANG Qiao CHEN Yu CAO ZhiDong ZHANG Hao DONG Lei ZHAO Jian XU Min GAO MengXu ZHONG ShaoBo HE QiSheng WANG JinFeng LI XiaoWen | 2010 | Chinese Science Bulletin2010，55，26： | 6 |
| 8 | Identity-Based Encryption with Keyword Search from Lattice Assumption显示文摘Public key encryption scheme | Xiaojun Zhang Chunxiang Xu Liming Mu Jie Zhao | 2018 | China Communications2018，15，4： | 5 |
| 9 | A fully automatic registration approach based on contour and SIFT for HJ-1 images显示文摘To achieve a fully automatic registration between HJ-1 CCD images and HJ-1 infrared images is a difficult task as it must deal with the varying illuminations and resolutions of the images,different perspectives,and the local deformations within the images.In this paper,aimed at those registration issues,a fully automatic registration approach based on contour and SIFT is proposed.The registration technique performs a pre-registration process using contour feature matching algorithm that decides the overlapping region between a reference image and an input image.Once the coarse regions are obtained,it performs a fine registration process based on SIFT detector and a local adaptive matching strategy.In the fine registration process,image blocking theory is used,which not only speeds up the features extraction and matching,but also makes the matching point pairs distributed uniformly in images,and further improves the accuracy of input image rectification.Experiments with visible images and infrared images from HJ-1A/B demonstrate the efficiency and the accuracy of the proposed technique for multisource remote sensing images registration. | NI XiLiang CAO ChunXiang DING Lin JIANG Tao ZHANG Hao JIA HuiCong LI GuangHe ZHAO Jian CHEN Wei JI Wei XU Min GAO MengXu ZHENG Sheng TIAN Rong LIU Cheng LI Sha | 2012 | Science China Earth Sciences2012，55，10： | 5 |
| 10 | Remote sensing based shrub above-ground biomass and carbon storage mapping in Mu Us desert,China显示文摘The estimation of above-ground biomass(AGB) and carbon storage is very important for arid and semi-arid ecosystems.HJ-1A/B satellite data combined with field measurement data was used for the estimation of shrub AGB and carbon storage in the Mu Us desert,China.The correlations of shrub AGB and spectral reflectance of four bands as well as their combined vegetation indexes were respectively analyzed and stepwise regression analysis was employed to establish AGB prediction equation.The prediction equation based on ratio vegetation index(RVI)was proved to be more suitable for shrub AGB estimation in the Mu Us desert than others.Shrub AGB and carbon storage were mapped using the RVI based prediction model in final.The statistics showed the western Mu Us desert has relatively high AGB and carbon storage,and that the gross shrub carton storage in Mu Us desert reaches 16 799 200 t,which has greatly contributed to the carbon fixation in northern China. | XU Min 1,2,CAO ChunXiang 1,TONG QingXi 1,LI ZengYuan 3,ZHANG Hao 1,HE QiSheng 1,2,GAO MengXu 1,2,ZHAO Jian 1,2,ZHENG Sheng 1,2,CHEN Wei 1,2 & ZHENG LanFen 1 1State Key Laboratory of Remote Sensing Science,Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University,Beijing 100101,China 2 Graduate School of the Chinese Academy of Sciences,Beijing 100049,China 3 Research Institute of Forest Resources and Information Techniques,Chinese Academy of Forestry,Beijing 10009,China | 2010 | Science China(Technological Sciences)2010，53，S1： | 5 |
| 11 | Cloud data auditing with designated verifier显示文摘一个审计的计划是证明采购到云的主人数据被使未经触动的一个好方法,并且能够给公共可证实性服务的一个计划是一些研究人员设法造最后几年了的一种好选择。然而,在一个公共审计计划,所有人做数据和一些分泌信息到公共验证器的漏的可能性的确认是数据主人是 unhappywith 的一个问题这种情形。例如,数据主人不想要任何人对另外知道他把数据在云服务者存储了。由与审计系统的公众联系的隐私的问题激发了,我们建议了审计的一个指明的验证器(DVA ) 基于 Steinfeld 策划 et al.s 通用指明的验证器(DV ) 签名计划。我们的 DVA 计划与私人确认能力授权一个第三方听者。因为计划包含验证器的私人钥匙,它提供私人确认。而且,我们在场审计计划改善审计效率的批。通过严密安全分析,我们证明我们的计划在假设计算 Diffie-Hellman (CDH ) 问题在双线性的地图的组上是难的随机的 oraclemodel 是 provably 安全的。 | Solomon Guadie WORKU Chunxiang XU Jining ZHAO | 2014 | Frontiers of Computer Science2014，8，3： | 4 |
| 12 | The Tibetan Plateau Surface–Atmosphere Coupling System and Its Weather and Climate Effects: The Third Tibetan Plateau Atmospheric Science Experiment显示文摘The Tibetan Plateau(TP) is a key area affecting forecasts of weather and climate in China and occurrences of extreme weather and climate events over the world. The China Meteorological Administration, the National Natural Science Foundation of China, and the Chinese Academy of Sciences jointly initiated the Third Tibetan Plateau Atmospheric Science Experiment(TIPEX-Ⅲ) in 2013, with an 8–10-yr implementation plan. Since its preliminary field measurements conducted in 2013, routine automatic sounding systems have been deployed at Shiquanhe, Gaize, and Shenzha stations in western TP, where no routine sounding observations were available previously. The observational networks for soil temperature and soil moisture in the central and western TP have also been established. Meanwhile, the plateau-scale and regional-scale boundary layer observations, cloud–precipitation microphysical observations with multiple radars and aircraft campaigns, and tropospheric–stratospheric air composition observations at multiple sites, were performed. The results so far show that the turbulent heat exchange coefficient and sensible heat flux are remarkably lower than the earlier estimations at grassland, meadow, and bare soil surfaces of the central and western TP. Climatologically, cumulus clouds over the main body of the TP might develop locally instead of originating from the cumulus clouds that propagate northward from South Asia. The TIPEX-Ⅲ observations up to now also reveal diurnal variations, macro-and microphysical characteristics, and water-phase transition mechanisms, of cumulus clouds at Naqu station. Moreover, TIPEX-Ⅲ related studies have proposed a maintenance mechanism responsible for the Asian 'atmospheric water tower' and demonstrated the effects of the TP heating anomalies on African, Asian, and North American climates. Additionally, numerical modeling studies show that the Γ distribution of raindrop size is more suitable for depicting the TP raindrop characteristics compared to the M–P distribution, the overestimation of sensible heat flux can be reduced via modifying the heat transfer parameterization over the TP, and considering climatic signals in some key areas of the TP can improve the skill for rainfall forecast in the central and eastern parts of China. Furthermore, the TIPEX-Ⅲ has been promoting the technology in processing surface observations, soundings, and radar observations, improving the quality of satellite retrieved soil moisture and atmospheric water vapor content products as well as high-resolution gauge–radar–satellite merged rainfall products, and facilitating the meteorological monitoring, forecasting, and data sharing operations. | Ping ZHAO Yueqing LI Xueliang GUO Xiangde XU Yimin LIU Shihao TANG Wenming XIAO Chunxiang SHI Yaoming MA Xing YU Huizhi LIU La JIA Yun CHEN Yanju LIU Jian LI Dabiao LUO Yunchang CAO Xiangdong ZHENG Junming CHEN An XIAO Fang YUAN Donghui CHEN Yang PANG Zhiqun HU Shengjun ZHANG Lixin DONG Juyang HU Shuai HAN Xiuji ZHOU | 2019 | Journal of Meteorological Research2019，33，3： | 4 |
| 13 | Evaluation of Surface Relative Humidity in China from the CRA-40 and Current Reanalyses显示文摘Recently,the China Meteorological Administration(CMA)released a new Global Atmospheric Reanalysis(CRA-40)dataset for the period 1979−2018.In this study,surface relative humidity(RH)from CRA-40 and other current reanalyses(e.g.,CFSR,ERA5,ERA-Interim,JRA-55,and MERRA-2)is comprehensively evaluated against homogenized observations over China.The results suggest that most reanalyses overestimate the observations by 15%−30%(absolute difference)over the Tibetan Plateau but underestimate the observations by 5%−10%over most of northern China.The CRA-40 performs relatively well in describing the long-term change and variance seen in the observed surface RH over China.Most of the reanalyses reproduce the observed surface RH climatology and interannual variations well,while few reanalyses can capture the observed long-term RH trends over China.Among these reanalyses,the CFSR does poorly in describing the interannual changes in the observed RH,especially in Southwest China.An empirical orthogonal function(EOF)analysis also suggests that the CRA-40 performs better than other reanalyses to capture the first two leading EOF modes revealed by the observations.The results of this study are expected to improve understanding of the strengths and weaknesses of the current reanalysis products and thus facilitate their application. | Jingpeng ZHANG Tianbao ZHAO Zhi LI Chunxiang LI Zhen LI Kairan YING Chunxiang SHI Lipeng JIANG Wenyu ZHANG | 2021 | Advances in Atmospheric Sciences2021，38，11： | 4 |
| 14 | Modification of Mn on corrosion and mechanical behavior of biodegradable Mg(88)Y4Zn2Li5 alloy with long-period stacking ordered structure显示文摘The biological corrosion behavior and mechanical properties of Mg(89-x)Y4 Zn2 Li5 Mnx(x=0,0.5,1,1.5 and2 at.%) alloy with long-period stacking ordered(LPSO) structure were investigated in this work.The magnesium matrix and the eutectic phase of Mg(88)Y4 Zn2 Li5 Mn1 alloy are effectively refined by the grain boundary segregation of Mn,and the average size of matrix and the eutectic phase decreased by 66%and 74%,respectively.The ultimate tensile strength(UTS) and elongation enhanced by 36% and 55%,respectively.The corrosion rates obtained by weight loss and hydrogen evolution of Mg(88)Y4 Zn2 Li5 Mn1 alloy were 79% and 84% lower than that of Mg(88)Y4 Zn2 Li5 alloy.Additionally,Mg(88)Y4 Zn2 Li5 Mn1 alloy also presents superior corrosion behavior in electrochemical test.It is verified that Mn plays a positive role in both corrosion and mechanical properties of the Mg(88)Y4 Zn2 Li5 Mn1 alloy,which provides a reference for further experimental work. | Jiaxin Zhang Jinshan Zhang Fuyin Han Wei Liu Longlong Zhang Rui Zhao Chunxiang Xu Jing Dou | 2020 | Journal of Materials Science & Technology2020，42，7： | 4 |
| 15 | Expression Analysis of the MdCIbHLH1 Gene in Apple Flower Buds and Seeds in the Process of Dormancy显示文摘A bHLH transcription factor that is induced by low temperature was found in apple(Malus×domestica Borkh.). To understand the sequence characteristics of the gene, bioinformatics analysis was performed. Furthermore, gene expression patterns of the laminated apple seeds and lateral flower buds were analyzed during the period of dormancy release with semi-quantitative RT-PCR. Based on secondary structure predictions, the results showed that the MdCIbHLH1 protein structure mainly included α-helix and random coil, while β-sheet and extended strand content was less. Semi-quantitative RT-PCR analysis showed that the expression patterns of MdCIbHLH1 were similar in laminated apple seeds and lateral flower buds during the period of dormancy release. Before dormancy release, expression levels of MdCIbHLH1 were high and gradually decreased during the period of dormancy release. These results indicated that MdCIbHLH1 might play an important role during dormancy release in apple seeds and apple buds. | REN Yiran ZHAO Qiang ZHAO Xianyan HAO Yujin YOU Chunxiang | 2016 | Horticultural Plant Journal2016，2，2： | 3 |
| 16 | Spectral behavior of 8-hydro-xyquinoline aluminum in nanometer-sized holes of porous alumina显示文摘The porous alumina have been prepared by anodization and an organic molecule 8-hydroxyquinoline aluminum (Alq3) has been impregnated in the pores. The morphology measured through atomic force microscopy shows that the size of the pores is about 10 nm. A blue-shift photoluminescence of Alq3 in nanometer-sized hole is close to that of the monomers. The measured spectral characteristics demonstrate the limitation of the porous alumina to the emission of Alq3. | XU Chunxiang XUE Qinghua BA Long ZHAO Bing GU Ning GUI Yiping | 2001 | Chinese Science Bulletin2001，46，21： | 3 |
| 17 | Volatile characteristics of 50 peaches and nectarines evaluated by HP–SPME with GC–MS显示文摘 | Yiju Wang Chunxiang Yang Shaohua Li Liu Yang Younian Wang Jianbo Zhao Quan Jiang | 2009 | Food Chemistry2009，，1： | 3 |
| 18 | A Study of the Comprehensive Urban Competitiveness Based On Principal Component Analysis显示文摘This paper studies the comprehensive urban competitiveness and performs the principal component analysis. The results show that the comprehensive evaluation of urban competitiveness is not entirely dependent on the city's economic strength or GDP,and it is necessary to consider from resource allocation capacity,openness and public service capacity. By selecting various data concerning 11 prefecture-level cities in Jiangxi Province in 2006,2009 and 2012,this paper gets the ranking results and analyzes trends,to provide a basis for making future economic policy. | Rifeng HE Chunxiang ZHAO | 2015 | Asian Agricultural Research2015，7，2： | 2 |
| 19 | Volatile characteristics of 50 peaches and nectarines evaluated by HP–SPME with GC–MS显示文摘 | Yiju Wang Chunxiang Yang Shaohua Li Liu Yang Younian Wang Jianbo Zhao Quan Jiang | 2009 | Food Chemistry2009，，1： | 2 |
| 20 | Interface control for pure ultraviolet electroluminescence from nano-ZnO-based heterojunction devices显示文摘Realization of pure and stable ultraviolet electroluminescence(UV EL) of ZnO light-emitting diode(LED)is still a challenging issue, due to complicated defects of intrinsic ZnO and the corresponding device interfaces. In this paper, we demonstrated a simple & feasible method to fabricate n-ZnO/AlN/p-GaN heterojunctions light-emitting devices. First, the vertically aligned ZnO nanorods(NRs) have been prepared as high quality active layer, and the nanostructured heterojunction LED arrays were constructed by directly bonding ZnO NRs onto AlN-coated p-GaN wafer. By optimizing the AlN layer thickness to be 20 nm, a strong and pure ultraviolet emission located at 387 nm can be observed. The energy band alignment of n-ZnO/AlN(20 nm)/p-Ga N heterojunction LED has been studied by using X-ray photoelectron spectroscopy(XPS), the valence band offset between AlN and GaN was calculated to be 0.34 eV. On the other side, the conduction band offset(as large as 3.28 eV) between Al N and ZnO can block the flow of electrons from ZnO top-GaN. Thus, electron-hole recombination takes place in the ZnO layer, and a pure UV EL could be observed. Our results provide a significant approach toward future of pure ultraviolet optoelectronic LEDs. | Daotong You Chunxiang Xu Feifei Qin Zhu Zhu A.Gowri Manohari Wei Xu Jie Zhao Wei Liu | 2018 | Science Bulletin2018，63，1： | 2 |
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