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Integrating machine learning and physical models for reconstructing sound speed profiles in mesoscale eddies 认领 引用
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作者 Hongchen LI Ming LI +3 位作者 Penghao WANG Kefeng MAO Yuhang ZHU Yuhang LIU 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2026年第4期1323-1341,共19页
Mesoscale eddies significantly affect sound propagation,yet their complex internal sound speed profiles suffer from substantial reconstruction errors,and only few studies specifically addressed this reconstruction.To ... Mesoscale eddies significantly affect sound propagation,yet their complex internal sound speed profiles suffer from substantial reconstruction errors,and only few studies specifically addressed this reconstruction.To bridge this gap,we used multi-source satellite data and Argo profiles to identify eddies and build a temperature-salinity-sound speed dataset.Sea surface parameters(temperature,height anomalies,salinity,density)and Argo density serve as inputs for a random forest(RF)algorithm to learn the surface-to-underwater sound speed mapping.Concurrently,a unified eddy dynamic model reconstructs the internal density field.By combining these environmental parameters with the reconstructed density generates eddy sound speed profiles,an integrated PIRF-DEN model that merges machine learning and physical modeling was established.Evaluations demonstrate the superiority of the model.By incorporating density input,the reconstruction accuracy was significantly improved,the mean absolute error(MAE)and root mean square error(RMSE)were reduced to 0.83 and 1.39 m/s,respectively,which is 87.3%and 83.7%less than that of the sEOF-r method.Integration of the eddy model effectively characterized the vertical density structure,whose constraint lowered the overfitting risk and enhanced the accuracy and stability over sEOF-r,sEOF-RF,and RF models.Propagation loss calculations using the reconstructed sound speed showed high correlation(coefficient:0.77)with measured data,further confirming its reliability. 展开更多
关键词 sound speed reconstruction random forest(RF) unified mesoscale eddy structural model vertical density
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Reconstructing active sites in Ni-Co double hydroxides to enhance electrocatalytic efficiency for nitrate reduction to ammonia 认领 引用 被引量：1
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作者 Jian Zhou Yunteng Wang +5 位作者 Dandan Wu Ying Wang Tao Zhou Terence Xiaoteng Liu Ming Wen Yongqing Fu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第11期133-142,I0005,共10页
Nitrate-to-ammonia conversion presents an effective method to remediate nitrate pollution while transforming waste into a valuable product and has recently garnered significant attention.Beyond the extensively studied... Nitrate-to-ammonia conversion presents an effective method to remediate nitrate pollution while transforming waste into a valuable product and has recently garnered significant attention.Beyond the extensively studied Cu-based catalysts,Co has also garnered significant attention.Identifying the real active sites and elucidating the mechanisms are urgently needed for its development in nitrate reduction.Co3O4,particularly its Co3+sites,is an established active phase for nitrate reduction and has been extensively studied.However,unlike the deliberate construction of the Co3O4phase or introducing doping to expose more Co3+in the previous studies,it was found in this work that the active species above could be generated in Ni-Co double hydroxides in the context of nitrate reduction.The in situ generated Co3O4,especially the spontaneously more exposed octahedrally coordinated Co3+,can significantly facilitate the crucial adsorption of Nand thus the following reaction.Furthermore,incorporated Ni sites accelerate nitrate reduction kinetics by promoting hydrogenation,facilitated by their H*-generating capability.This enhanced catalytic activity yields a superior NH3production rate of 7.05 mmol h-1cm-2.Besides,a new and more efficient approach for nitrate remediation that focuses on the nitrate sources was proposed and verified through experimentation. 展开更多
关键词 Nitrate reduction Electrocatalysis Co-based material In situ reconstruction
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Reconstructing Cultural Memory: English Translation Journey of The Book of Chuang Tzu 认领 引用
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作者 XU Xinyi 《Cultural and Religious Studies》 2025年第11期653-666,共14页
This paper examines the English translations of The Book of Chuang Tzu by Martin Palmer under Big Translation Theory,which emphasizes cyclical cultural reconstructions.Focusing on three phases-full translation,abridge... This paper examines the English translations of The Book of Chuang Tzu by Martin Palmer under Big Translation Theory,which emphasizes cyclical cultural reconstructions.Focusing on three phases-full translation,abridged adaptation and back translation-the study reveals how cultural and philosophical nuances are reshaped during interlingual,intralingual,and intersemiotic conversions.Textual analysis demonstrates that Palmer’s translations,while enhancing readability for Western readers,distorts some of the core Taoist concepts.While the full and abridged versions lead to cultural reconstructions,the back-translated text reflects that,under Big Translation Theory,such reconstructions help to integrate traditional Chinese cultural memory with Western discourse,forming a new type of collective cultural memory.By associating translation activities with building collective cultural memory,the study reveals the cross-cultural and social attributes in translating classical texts,which secures the communicative and prolonged nature of cultural essence. 展开更多
关键词 The Book of Chuang Tzu Big Translation Theory Martin Palmer cyclical cultural reconstruction collective cultural memory
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Stress field evolution law of mining environment reconstructing structure with change of filling height 认领 引用 被引量：1
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作者 陈庆发 周科平 王利利 《Journal of Central South University》 SCIE EI CAS 2010年第4期738-743,共6页
For improving global stability of mining environment reconstructing structure,the stress field evolution law of the structure with the filling height change of low-grade backfill was studied by ADINA finite element an... For improving global stability of mining environment reconstructing structure,the stress field evolution law of the structure with the filling height change of low-grade backfill was studied by ADINA finite element analysis code.Three kinds of filling schemes were designed and calculated,in which the filling heights were 2,4,and 7 m,separately.The results show that there are some rules in the stress field with the increase of the filling height as follows:(1) the maximum value of tension stress of the roof decreases gradually,and stress conditions are improved gradually;(2) the tension stress status in the vertical pillar is transformed into the compressive stress status,and the carrying capacity is improved gradually;however,when the filling height is beyond 2.8 m,the carrying capacity of the vertical pillar grows very slowly,so,there is little significance to continue to fill the low-grade backfill;(3) the bottom pillar suffers the squeezing action from the vertical pillars at first and then the gravity action of the low-grade backfill,and the maximum value of tension stress of the bottom pillar firstly increases and then decreases.Considering the economic factor,security and other factors,the low-grade backfill has the most reasonable height(2.8 m) in the scope of all filling height. 展开更多
关键词 mining environment reconstructing strucre stress field filling height evolution law
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CLDASSD:Reconstructing Fine Textures of the Temperature Field Using Super-Resolution Technology 认领 引用 被引量：7
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作者 Ruian TIE Chunxiang SHI +3 位作者 Gang WAN Xingjie HU Lihua KANG Lingling GE 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2022年第1期117-130,共14页
Before 2008,the number of surface observation stations in China was small.Thus,the surface observation data were too sparse to effectively support the High-resolution China Meteorological Administration’s Land Assimi... Before 2008,the number of surface observation stations in China was small.Thus,the surface observation data were too sparse to effectively support the High-resolution China Meteorological Administration’s Land Assimilation System(HRCLDAS)which ultimately inhibited the output of high-resolution and high-quality gridded products.This paper proposes a statistical downscaling model based on a deep learning algorithm in super-resolution to research the above problem.Specifically,we take temperature as an example.The model is used to downscale the 0.0625°×0.0625°,2-m temperature data from the China Meteorological Administration’s Land Data Assimilation System(CLDAS)to 0.01°×0.01°,named CLDASSD.We performed quality control on the paired data from CLDAS and HRCLDAS,using data from 2018 and 2019.CLDASSD was trained on the data from 31 March 2018 to 28 February 2019,and then tested with the remaining data.Finally,extensive experiments were conducted in the Beijing-Tianjin-Hebei region which features complex and diverse geomorphology.Taking the HRCLDAS product and surface observation data as the"true values"and comparing them with the results of bilinear interpolation,especially in complex terrain such as mountains,the root mean square error(RMSE)of the CLDASSD output can be reduced by approximately 0.1℃,and its structural similarity(SSIM)was approximately 0.2 higher.CLDASSD can estimate detailed textures,in terms of spatial distribution,with greater accuracy than bilinear interpolation and other sub-models and can perform the expected downscaling tasks. 展开更多
关键词 statistical downscaling deep learning temperature field high-resolution reconstruction
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Reconstructing Spatial Distribution of Historical Cropland in China′s Traditional Cultivated Region: Methods and Case Study 认领 引用 被引量：7
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作者 YANG Xuhong GUO Beibei +2 位作者 JIN Xiaobin LONG Ying ZHOU Yinkang 《Chinese Geographical Science》 SCIE CSCD 2015年第5期629-643,共15页
As an important part of land use/cover change(LUCC), historical LUCC in long time series attracts much more attention from scholars. Currently, based on the view of combining the overall control of cropland area and ... As an important part of land use/cover change(LUCC), historical LUCC in long time series attracts much more attention from scholars. Currently, based on the view of combining the overall control of cropland area and ′top-down′ decision-making behaviors, here are two global historical land-use datasets, generally referred as the Sustainability and the Global Environment datasets(SAGE datasets) and History Database of the Global Environment datasets(HYDE datasets). However, at the regional level, these global datasets have coarse resolutions and inevitable errors. Considering various factors that influenced cropland distribution, including cropland connectivity and the limitation of natural and human factors, this study developed a reconstruction model of historical cropland based on constrained Cellular Automaton(CA) of ′bottom-up′. Then, an available labor force index is used as a proxy for the amount of cropland to inspect and calibrate these spatial patterns. Applied the reconstruction model to Shandong Province, we reconstructed its spatial distribution of cropland during 8 periods. The reconstructed results show that: 1) it is properly suitable for constrained CA to simulate and reconstruct the spatial distribution of cropland in traditional cultivated region of China; 2) compared with ′SAGE datasets′ and ′HYDE datasets′, this study have formed higher-resolution Boolean spatial distribution datasets of historical cropland with a more definitive concept of spatial pattern in terms of fractional format. 展开更多
关键词 traditional cultivated region historical cropland reconstruction constrained Cellular Automaton （CA） Shandong Province
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Reconstructing the historical spatial land use pattern for Jiangsu Province in mid-Qing Dynasty 认领 引用 被引量：5
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作者 金晓斌 潘倩 +2 位作者 杨绪红 白清 周寅康 《Journal of Geographical Sciences》 SCIE CSCD 2016年第12期1689-1706,共18页
This study is proposed to reconstruct a high-resolution spatial distribution of historical land use pattern with all land use types to overcome low-accuracy and/or the monotonic land use type in current historical lan... This study is proposed to reconstruct a high-resolution spatial distribution of historical land use pattern with all land use types to overcome low-accuracy and/or the monotonic land use type in current historical land use reconstruction studies. The year of 1820 is set as the temporal section and the administrative area of Jiangsu Province is the study area. Land use types being reconstructed include farmland, residential land （including both urban land and rural residential land）, water body, and other land （including forest land, grassland, and unused land）. Data sources mainly refer to historical documents, historical geographic research outcomes, contemporary statistics, and natural environmental data. With great considerations over regional natural resources and social and economic conditions, a few theoretical assumptions have been proposed to facilitate the adjustment on prefecture farmland, urban land, and rural residential land. Upholding the idea that the contemporary land use pattern has been inherently in sequence with the historical land use pattern as well as the land use pattern shall be consistent to its accessibility, this study reconstructs the land use pattern in Jiangsu Province in 1820 with 100 m＊100 m grids based on accessibility analysis and comprehensive evaluation. The outcome has been tested as valid by regionalization and correlation analysis. The resulted spatial distribution shows that back in 1820 in Jiangsu Province： （1） farmland, urban land, rural residential land, water body, and other land take about 48.49%, 4.46%, 0.16%, 15.03%, and 31.86% of the total land area respectively; （2） the land use pattern features high proportion of land in farming while low-proportion land in non-farming uses while population, topography, and the density of water body lead to great spatial variations; and （3） the reconstruction methodology has been tested as reasonable based on significant positive correlations between 1820 data and 1985 for both farmland and rural residential land at the prefecture level. 展开更多
关键词 land use grid, reconstruction mid-Qing Dynasty Jiangsu Province
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Method for denoising and reconstructing radar HRRP using modified sparse auto-encoder 认领 引用 被引量：3
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作者 Chen GUO Haipeng WANG +2 位作者 Tao JIAN Congan XU Shun SUN 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2020年第3期1026-1036,共11页
A high resolution range profile(HRRP) is a summation vector of the sub-echoes of the target scattering points acquired by a wide-band radar.Generally, HRRPs obtained in a noncooperative complex electromagnetic environ... A high resolution range profile(HRRP) is a summation vector of the sub-echoes of the target scattering points acquired by a wide-band radar.Generally, HRRPs obtained in a noncooperative complex electromagnetic environment are contaminated by strong noise.Effective pre-processing of the HRRP data can greatly improve the accuracy of target recognition.In this paper, a denoising and reconstruction method for HRRP is proposed based on a Modified Sparse Auto-Encoder, which is a representative non-linear model.To better reconstruct the HRRP, a sparse constraint is added to the proposed model and the sparse coefficient is calculated based on the intrinsic dimension of HRRP.The denoising of the HRRP is performed by adding random noise to the input HRRP data during the training process and fine-tuning the weight matrix through singular-value decomposition.The results of simulations showed that the proposed method can both reconstruct the signal with fidelity and suppress noise effectively, significantly outperforming other methods, especially in low Signal-to-Noise Ratio conditions. 展开更多
关键词 High resolution range profile Intrinsic dimension Modified sparse autoencoder Signal denoise Signal sparse reconstruction
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Hamstring autograft utilization in reconstructing anterior cruciate ligament:Review of harvesting techniques,graft preparation,and different fixation methods 认领 引用 被引量：2
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作者 Waleed Albishi Baraa Baltow +2 位作者 Nora Albusayes Ameer A Sayed Hamza M Alrabai 《World Journal of Orthopedics》 2022年第10期876-890,共15页
Rupture of the anterior cruciate ligament(ACL)is a common orthopedic injury.Various graft options are available for the reconstruction of ruptured ACL.Using the hamstring muscle as an autograft was first described in ... Rupture of the anterior cruciate ligament(ACL)is a common orthopedic injury.Various graft options are available for the reconstruction of ruptured ACL.Using the hamstring muscle as an autograft was first described in 1934,and it remains a commonly harvested graft for ACL reconstruction.Hamstring autografts can be harvested using the traditional anteromedial approach or the newer posteromedial technique.An isolated semitendinosus tendon can be used or combined with the gracilis tendon.There are numerous methods for graft fixation,such as intra-tunnel or extra-tunnel fixation.This comprehensive review discusses the different hamstring muscle harvesting techniques and graft preparation options and fixation methods.It provides a comprehensive overview for choosing the optimal surgical technique when treating patients. 展开更多
关键词 Anterior cruciate ligament Anterior cruciate ligament reconstruction Graft fixation Hamstring autograft Infrapatellar nerve injury Patient reported outcomes
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Reconstructing seafloor age distributions in lost ocean basins 认领 引用 被引量：1
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作者 Simon Williams Nicky M.Wright +2 位作者 John Cannon Nicolas Flament R.Dietmar Müller 《Geoscience Frontiers》 SCIE CAS CSCD 2021年第2期769-780,共12页
Reconstructions of past seafloor age make it possible to quantify how plate tectonic forces,surface heat flow,ocean basin volume and global sea level have varied through geological time.However,past ocean basins that ... Reconstructions of past seafloor age make it possible to quantify how plate tectonic forces,surface heat flow,ocean basin volume and global sea level have varied through geological time.However,past ocean basins that have now been subducted cannot be uniquely reconstructed,and a significant challenge is how to explore a wide range of possible reconstructions.Here,we investigate possible distributions of seafloor ages from the late Paleozoic to present using published full-plate reconstructions and a new,efficient seafloor age reconstruction workflow,all developed using the open-source software GPlates.We test alternative reconstruction models and examine the influence of assumed spreading rates within the Panthalassa Ocean on the reconstructed history of mean seafloor age,oceanic heat flow,and the contribution of ocean basin volume to global sea level.The reconstructions suggest variations in mean seafloor age of~15 Myr during the late Paleozoic,similar to the amplitude of variations previously proposed for the Cretaceous to present.Our reconstructed oceanic age-area distributions are broadly compatible with a scenario in which the long-period fluctuations in global sea level since the late Paleozoic are largely driven by changes in mean seafloor age.Previous suggestions of a constant rate of seafloor production through time can be modelled using our workflow,but require that oceanic plates in the Paleozoic move slower than continents based on current reconstructions of continental motion,which is difficult to reconcile with geodynamic studies. 展开更多
关键词 Plate reconstructions Sea level Seafloor spreading
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FITTING CORRECTION METHOD OF RING ARTIFACTS FOR RECONSTRUCTING CONE-BEAM CT IMAGES 认领 引用 被引量：1
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作者 罗守华 吴婧 +1 位作者 张波 陈功 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2010年第1期34-38,共5页
In high-resolution cone-beam computed tomography （CBCT） using the flat-panel detector, imperfect or defect detector elements cause ring artifacts due to the none-uniformity of their X-ray response. They often distur... In high-resolution cone-beam computed tomography （CBCT） using the flat-panel detector, imperfect or defect detector elements cause ring artifacts due to the none-uniformity of their X-ray response. They often disturb the image quality. A dedicated fitting correction method for high-resolution micro-CT is presented. The method converts each elementary X-ray response curve to an average one, and eliminates response inconsistency among pixels. Other factors of the method are discussed, such as the correction factor variability by different sampling frames and nonlinear factors over the whole spectrum. Results show that the noise and artifacts are both reduced in reconstructed images 展开更多
关键词 image processing image reconstruction flat-panel detector fitting correction method
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An efficient inverse approach for reconstructing time-and space-dependent heat flux of participating medium 认领 引用 被引量：1
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作者 Shuang-Cheng Sun Guang-Jun Wang Hong Chen 《Chinese Physics B》 SCIE EI CAS CSCD 2020年第11期164-173,共10页
The decentralized fuzzy inference method(DFIM)is employed as an optimization technique to reconstruct time-and space-dependent heat flux of two-dimensional(2D)participating medium.The forward coupled radiative and con... The decentralized fuzzy inference method(DFIM)is employed as an optimization technique to reconstruct time-and space-dependent heat flux of two-dimensional(2D)participating medium.The forward coupled radiative and conductive heat transfer problem is solved by a combination of finite volume method and discrete ordinate method.The reconstruction task is formulated as an inverse problem,and the DFIM is used to reconstruct the unknown heat flux.No prior information on the heat flux distribution is required for the inverse analysis.All retrieval results illustrate that the time-and spacedependent heat flux of participating medium can be exactly recovered by the DFIM.The present method is proved to be more efficient and accurate than other optimization techniques.The effects of heat flux form,initial guess,medium property,and measurement error on reconstruction results are investigated.Simulated results indicate that the DFIM is robust to reconstruct different kinds of heat fluxes even with noisy data. 展开更多
关键词 decentralized fuzzy inference surface heat flux reconstruction inverse heat transfer problem participating medium
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The Reconstructing of Low Signal-noise Ratio Single Ion Channel Signal from Patch-clamp Recordings Sampled in the Colored Background Noise 认领 引用
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作者 韩晓东 LiuXiangming 《High Technology Letters》 EI CAS 2002年第3期72-77,共6页
The single ion channel signal is an ionic current that can be recorded by the patch clamp technique. Hidden Markov model (HMM) algorithm has been used to convert the low signal noise ratio (SNR) noisy recording into a... The single ion channel signal is an ionic current that can be recorded by the patch clamp technique. Hidden Markov model (HMM) algorithm has been used to convert the low signal noise ratio (SNR) noisy recording into an idealized quantal one in the case of white background noise. The traditional HMM algorithm is extended and adapted to the colored background noise. A new algorithm called EHMM (Extended HMM) algorithm is proposed, and mainly validated by simulation. Results show that it’s effective. 展开更多
关键词 single ion channel signal patch clamp technique single reconstructing hidden Markov model EM algorithm
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Reconstructing the Nonlinear Dynamical Systems by Evolutionary Computation Techniques 认领 引用 被引量：1
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作者 LIU Minzhong KANG Lisha 《Wuhan University Journal of Natural Sciences》 EI CAS 2006年第3期520-524,共5页
We introduce a new dynamical evolutionary algorithm（DEA） based on the theory of statistical mechanics and investigate the reconstruction problem for the nonlinear dynamical systems using observation data. The conver... We introduce a new dynamical evolutionary algorithm（DEA） based on the theory of statistical mechanics and investigate the reconstruction problem for the nonlinear dynamical systems using observation data. The convergence of the algorithm is discussed. We make the numerical experiments and test our model using the two famous chaotic systems （mainly the Lorenz and Chen systems）. The results show the relatively accurate reconstruction of these chaotic systems based on observational data can be obtained. Therefore we may conclude that there are broad prospects using our method to model the nonlinear dynamical systems. 展开更多
关键词 dynamical evolutionary algorithm nonlinear dynamical systems reconstruction
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Reconstructing dark energy potentials from parameterized deceleration parameters 认领 引用
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作者 王钰婷 徐立昕 +1 位作者 吕剑波 桂元星 《Chinese Physics B》 SCIE EI CAS 2010年第1期595-599,共5页
In this paper, the properties of dark energy are investigated according to the parameterized deceleration parameter q（z）, which is used to describe the extent of the accelerating expansion of the universe. The poten... In this paper, the properties of dark energy are investigated according to the parameterized deceleration parameter q（z）, which is used to describe the extent of the accelerating expansion of the universe. The potential of dark energy V（φ） and the cosmological parameters, such as the dimensionless energy density Ωφ, Ωm, and the state parameter wφ, are connected to it. Concretely, by giving two kinds of parameterized deceleration parameters q（z） = a ＋ bz/（1 ＋ z） and q（z） = 1/2 ＋ （az ＋ b）/（1 ＋ z）^2, the evolution of these parameters and the reconstructed potentials V（φ） are plotted and analysed. It is found that the potentials run away with the evolution of universe. 展开更多
关键词 dark energy（DE） deceleration parameter reconstructed potential
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A method of reconstructing complex stratigraphic surfaces with multitype fault constraints 认领 引用
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作者 Deng Shi-Wu Jia Yu +1 位作者 Yao Xing-Miao Liu Zhi-Ning 《Applied Geophysics》 SCIE CSCD 2017年第2期195-204,322,共10页
The construction of complex stratigraphic surfaces is widely employed in many fields, such as petroleum exploration, geological modeling, and geological structure analysis. It also serves as an important foundation fo... The construction of complex stratigraphic surfaces is widely employed in many fields, such as petroleum exploration, geological modeling, and geological structure analysis. It also serves as an important foundation for data visualization and visual analysis in these fields. The existing surface construction methods have several deficiencies and face various difficulties, such as the presence of multitype faults and roughness of resulting surfaces. In this paper, a surface modeling method that uses geometric partial differential equations （PDEs） is introduced for the construction of stratigraphic surfaces. It effectively solves the problem of surface roughness caused by the irregularity of stratigraphic data distribution. To cope with the presence of multitype complex faults, a two-way projection algorithm between three- dimensional space and a two-dimensional plane is proposed. Using this algorithm, a unified method based on geometric PDEs is developed for dealing with multitype faults. Moreover, the corresponding geometric PDE is derived, and an algorithm based on an evolutionary solution is developed. The algorithm proposed for constructing spatial surfaces with real data verifies its computational efficiency and its ability to handle irregular data distribution. In particular, it can reconstruct faulty surfaces, especially those with overthrust faults. 展开更多
关键词 Partial differential equation surface reconstruction interpolation fault meshing
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Algorithm for reconstructing compressed sensing color imaging using the quaternion total variation 认领 引用
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作者 廖帆 严路 +2 位作者 伍家松 韩旭 舒华忠 《Journal of Southeast University(English Edition)》 EI CAS 2015年第1期51-54,共4页
A new method for reconstructing the compressed sensing color image by solving an optimization problem based on total variation in the quaternion field is proposed, which can effectively improve the reconstructing abil... A new method for reconstructing the compressed sensing color image by solving an optimization problem based on total variation in the quaternion field is proposed, which can effectively improve the reconstructing ability of the color image. First, the color image is converted from RGB （red, green, blue） space to CMYK （cyan, magenta, yellow, black） space, which is assigned to a quaternion matrix. Meanwhile, the quaternion matrix is converted into the information of the phase and amplitude by the Euler form of the quatemion. Secondly, the phase and amplitude of the quatemion matrix are used as the smoothness constraints for the compressed sensing （CS） problem to make the reconstructing results more accurate. Finally, an iterative method based on gradient is used to solve the CS problem. Experimental results show that by considering the information of the phase and amplitude, the proposed method can achieve better performance than the existing method that treats the three components of the color image as independent parts. 展开更多
关键词 total variation compressed sensing quatemion sparse reconstruction color image restoration
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Reconstructing Concept Lattices Using nth-Order Context Kernels 认领 引用
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作者 SHEN Xiajiong XU Bin LIU Zongtian 《Wuhan University Journal of Natural Sciences》 EI CAS 2006年第5期1362-1366,共5页
To be different from traditional algorithms for concept lattice constructing, a method based on nth-order context kernel is suggested in this paper. The context kernels support generating small lattices for sub-contex... To be different from traditional algorithms for concept lattice constructing, a method based on nth-order context kernel is suggested in this paper. The context kernels support generating small lattices for sub-contexts split by a given context. The final concept lattice is reconstructed by combining these small lattices. All relevant algorithms are implemented in a system IsoFCA. Test shows that the method yields concept lattices in lower time complexity than Godin algorithm in practical case. 展开更多
关键词 context kernel concept lattice isomorphism reconstruction
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Experiments of Reconstructing Discrete Atmospheric Dynamic Models from Data (I) 认领 引用
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作者 林振山 朱焰宇 邓自旺 《Advances in Atmospheric Sciences》 SCIE CAS 1995年第1期121-125,共5页
In this paper, we give some experimental results of our study in reconstructing discrete atmospheric dynamic models from data. After a great deal of numerical experiments, we found that the logistic map, xn +1= 1-uxn2... In this paper, we give some experimental results of our study in reconstructing discrete atmospheric dynamic models from data. After a great deal of numerical experiments, we found that the logistic map, xn +1= 1-uxn2 could be used in monthly mean temperature prediction when it was approaching the chaotic region, and its predictive results were in reverse states to the practical data. This means that the nonlinear developing behavior of the monthly mean temperature system is bifurcating back into the critical chaotic states from the chaotic ones. 展开更多
关键词 Reconstruction Discrete dynamic model Chaos Bifurcation Logistic map
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Transferring superior gluteal nerve to pudendal nerve in reconstructing functional impairment in simple conus medullaris or pudendal nerve injury 认领 引用
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作者 党瑞山 刘芳 +5 位作者 张少成 李玉泉 黄会龙 陈尔瑜 许家军 张传森 《Journal of Medical Colleges of PLA(China)》 2003年第6期337-340,共4页
Objective: 1Department of Anatomy, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China 2Department of Orthopedic Surgery, Changhai Hospital, Second Military Medical University... Objective: 1Department of Anatomy, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China 2Department of Orthopedic Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, China Abstract Objective: To study the anatomical basis of transferring the superior gluteal nerve to the pudendal nerve in reconstructing the functional impairment in simple conus medullaris or pudendal nerve injury. Methods: Superior gluteal nerve and pudendal nerve were observed and measured by the gross and microsurgical anatomical methods in 62 sides of 31 adult cadavers. Results: Superior gluteal nerve came out of the superior foreman of piriformis as 1 to 4 branches(29.03%,56.45%,12.90% and 1.61% respectively) and the pelvic-leaving points were mainly in the middle 1/3(85.48%) of the line from the posterior superior iliac spine to the ischial tuberosity. The length of the inferior branch of the superior gluteal nerve was more than 5 cm, and the distance between the pelvic-leaving points of the superior gluteal nerve and pudandal nerve was about 4 cm only. The pudendal nerve left the pelvis mainly in the middle 1/3(48.39%) of the line from the posterior superior iliac spine to the ischial tuberosity,or at the junction of its inferior-middle 1/3(46.77%). In clinic, we have successfully made the operation transferring the superior gluteal nerve to the pudendal nerve in 3 patients suffered from the injury of conus medullaris. Conclusion: Distance between the pelvic-leaving points of the superior gluteal nerve and the pudendal nerve is close, so the inferior branch of the gluteal nerve can be anastomosed with the pudendal nerve directly. Transferring the superior gluteal nerve with higher spinal segemental origin to the pudendal nerve of a lower spinal segemental origin is practical and easy. 展开更多
关键词 superior gluteal nerve pudendal nerve nerve transfer functional reconstruction
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