|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | An improved EM algorithm for remote sensing classification显示文摘The use of a general EM(expectation-maximization) algorithm in multi-spectral image classification is known to cause two problems:singularity of the variance-covariance matrix and sensitivity of randomly selected initial values.The former causes computation failure;the latter produces unstable classification results.This paper proposes a modified approach to resolve these defects.First,a modification is proposed to determine reliable parameters for the EM algorithm based on a k-means algorithm with initial centers obtained from the density function of the first principal component,which avoids the selection of initial centers at random.A second modification uses the principal component transformation of the image to obtain a set of uncorrelated data.The number of principal components as the input of the EM algorithm is determined by the principal contribution rate.In this way,the modification can not only remove singularity but also weaken noise.Experimental results obtained from two sets of remote sensing images acquired by two different sensors confirm the validity of the proposed approach. | YANG HongLei PENG JunHuan XIA BaiRu ZHANG DingXuan | 2013 | Chinese Science Bulletin2013，58，9： | 5 |
| 2 | Efficient and photostable CsPbI_(2) Br solar cells realized by adding PMMA显示文摘Organic–inorganic hybrid perovskite materials demonstrate promising applications in high-efficiency perovskite solar cells (PSCs) with a certified power conversion efficiency(PCE) of 25.5%(https://www.nrel.gov/pv/cell-efficiency.html). | Yanbo Shang Zhimin Fang Wanpei Hu Chuantian Zuo Bairu Li Xingcheng Li Mingtai Wang Liming Ding Shangfeng Yang | 2021 | Journal of Semiconductors2021，42，5： | 4 |
| 3 | Hydrogeochemical Modeling of the Shallow Thermal Water Evolution in Yangbajing Geothermal Field, Tibet显示文摘The exploitation of thermal water and the mix of cold water changed the properties of geofluid in shallow reservoir,which altered the concentration of the chemical constitutes and continuously built new water-rock reaction. This paper deduced reservoir pressure and temperature variation tendency from 2004 to 2013,analyzed the change of some components in the shallow reservoir water,and finally obtained the evolution of the shallow geothermal water with hydrogeochemical model. The results show the reservoir pressure decreased significantly compared with the slight decline of reservoir temperature,and much cold groundwater infiltrated into the shallow reservoir,which affected the solubility of SiO2 and led to precipitation,the increased CO2 in shallow reservoir promoted the dissolution of aluminosilicate. Calcite and kaolinite precipitation zone has extended to the north in the field,which influenced the porosity of the reservoir rock. | Xiuhua Zheng Chenyang Duan Bairu Xia Yong Jiang Jian Wen | 2019 | Journal of Earth Science2019，30，4： | 3 |
| 4 | Controlling the uncertainty in reservoir stochastic simulation显示文摘Unexpected noise in reservoir stochastic simulation realization may be too high to make the realization useful, especially when there is a lack of hard data. Through discussing the uncertainties, we present two ways to control the uncertainty ratio that is brought by the algorithm of stochastic simulation. By reasonably reducing the random value of the stochastic simulation result, the unexpected values introduced by the residual that associates with random series can be controlled. Another way when the data disperse unevenly is to control the stochastic simulation order by grouping the points that need to be simulated to make those points which can be simulated by more neighborhood hard data calculated first. Both methods do not go against the core stochastic simulation algorithm. | Cui Yong Chi Bo Chen Guo Ouyang Cheng Xia Bairu | 2010 | Petroleum Science2010，7，4： | 2 |
| 5 | Dithiol treatments enhancing the efficiency of hybrid solar cells based on PTB7 and CdSe nanorods显示文摘We report the fabrication of polymer/inorganic hybrid solar cells (HSCs) based on CdSe nanorods (NRs) and the semiconducting polymer PTB7. The power conversion efficiency of HSCs can be significantly enhanced by engineering the polymer/nanocrystal interface with ethanedithiol (EDT) and 1,4-benzenedithiol (1,4-BDT) treatments and reached 2.58% and 2.79%, respectively. These results were preferable to that of a pyridine-coated NR-based device (1.75%). This improvement was attributed to the thiol groups of EDT and 1,4-BDT, which can tightly coordinate the Cd ions to form Cd-thialate on CdSe NR surfaces, thereby effectively passivating the NR surface and reducing the active layer defects. Therefore, the rate of exciton generation and dissociation was enhanced and led to the improvement of the device performance. | Weining Luo Tonggang Jiu Chaoyang Kuang Bairu Li Fushen Lu Junfeng Fang | 2015 | Nano Research2015，8，9： | 2 |
| 6 | Somaclonal variation in plants: causes and detection methods 显示文摘 | Bairu M W Aremu O A Van Staden J | 2011 | Plant Growth Regulation2011，63，2： | 1 |
| 7 | 显示文摘 | Jun Yu Hua Wang Bairu Zhao | 2004 | Jpn J Appl Phys2004，43，5： | 1 |
| 8 | Using 210 Pb uns and 137 Cs to date recent sediment cores from the Badain Jaran Desert, Inner Mongolia, China显示文摘 | Siwen Liu Narentuya Bairu Xia Guoqiang Chu Mingzhong Tian | 2012 | Quaternary Geochronology2012，，： | 1 |
| 9 | Ultrafast interfacial charge-transfer dynamics in a donor-,rc-acceptor chromophore sensitized TiO, nanocomposite 显示文摘 | Bairu Semere G Edwin Mghanga Jameel Hasan | 2013 | Journal of Physieal Chemistry C2013，117，： | 1 |
| 10 | Capacitive Humidity Sensors Based on Ni/SiNWs Nanocomposites 显示文摘 | Tao Bairu Zhang Jian Miao Fengjuan | 2009 | Sensors and Actuators B2009，136，1： | 1 |
| 11 | Optimising DNA isolation for medicinal plants显示文摘 | MOYO M AMOO S O BAIRU M W | 2008 | South African Journal of Botany2008，74，4： | 1 |
| 12 | Determination of Fe ( 111 ) using diamond paste based electrodes 显示文摘 | Stefan R I Bairu S G van Staden J F | 2003 | Instrumentation Science & Technology2003，31，4： | 1 |
| 13 | Topolins : A panacea to planttissue culture challenges? 显示文摘 | Aremu A 0 Bairu M W Dole al K | 2012 | Plant Cell Tiss Organ Cult ?2012，108，： | 1 |
| 14 | Optimizing the micropropaga-tion protocol for the endangered Aloe polyphylla : Can meta-topolin and itsderivatives serve as replacement for benzyladenine and zeatin? 显示文摘 | Bairu M W Stirk W A Dolezal K | 2007 | Plant CellTissue Organ Cult2007，90，： | 1 |
| 15 | MicroRNA‐191, by promoting the EMT and increasing CSC‐like properties, is involved in neoplastic and metastatic properties of transformed human bronchial epithelial cells显示文摘 | Wenchao Xu Jie Ji Yuan Xu Yawei Liu Le Shi Yi Liu Xiaolin Lu Yue Zhao Fei Luo Bairu Wang Rongrong Jiang Jianping Zhang Qizhan Liu | 2015 | Carcinog2015，，1： | 1 |
| 16 | Optimizing the micropropagation protocol for the endangered Aloe polyphylla:Can meta-topolin and its derivatives serve as replacement for benzyladenine and zeatin显示文摘 | Bairu M W Stirk W A Dolezal K | 2007 | Plant Cell Tiss Organ Cult2007，90，： | 1 |
| 17 | Assessment of the role of meta-topolins on in vitro produced phenolics and acclimatization competence of micropropagated‘Wil iams’ banana显示文摘 | Adeyemi O. Aremu Michael W. Bairu Lucie Szü?ová | | 0，，： | 1 |
| 18 | Shoot and root proliferation in ‘Wil iams’ banana显示文摘 | Adeyemi O. Aremu Michael W. Bairu Lucie Szü?ová | | 0，，： | 1 |
| 19 | Bio‐Inspired Multifunctional Metallic Foams Through the Fusion of Different Biological Solutions显示文摘 | Xu Jin Bairu Shi Lichen Zheng Xiaohan Pei Xiyao Zhang Ziqi Sun Yi Du Jung Ho Kim Xiaolin Wang Shixue Dou Kesong Liu Lei Jiang | 2014 | Adv. Funct. Mater2014，，18： | 1 |
| 20 | Somaclonal variation in plants: causes and detection methods显示文摘 | Bairu M W Aremu A O Staden J V | 2011 | Plant Growth Regulation2011，63，2： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员