|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | GrabCut image segmentation algorithm based on structure tensor显示文摘This paper attempts to present an interactive color natural images segmentation method. This method extracts the feature of images by using the nonlinear compact structure tensor(NCST) and then uses GrabCut method to obtain the segmentation. This method not only realizes the non-parametric fusion of texture information and color information, but also improves the efficiency of the calculation. Then, the improved GrabCut algorithm is used to evaluate the foreground target segmentation. In order to calculate the simplicity and efficiency, this paper also extends the Gaussian mixture model(GMM) constructed base on the GrabC ut to the tensor space, and uses the Kullback-Leibler(KL) divergence instead of the usual Riemannian geometry. Lastly, an iteration convergence criterion is proposed to reduce the time of the iteration of GrabCut algorithm dramatically with satisfied segmentation accuracy. After conducting a large number of experiments on synthetic texture images and natural images, the results demonstrate that this method has a more accurate segmentation effect. | Zhang Yong Yuan Jiazheng Liu Hongzhe Li Qing | 2017 | The Journal of China Universities of Posts and Telecommunications2017，24，2： | 3 |
| 2 | Three-dimensional ATUM-SEM reconstruction and analysis of hepatic endoplasmic reticulum-organelle interactions显示文摘The endoplasmic reticulum(ER)is a contiguous and complicated membrane network in eukaryotic cells,and membrane contact sites(MCSs)between the ER and other organelles perform vital cellular functions,including lipid homeostasis,metabolite exchange,calcium level regulation,and organelle division.Here,we establish a whole pipeline to reconstruct all ER,mitochondria,lipid droplets,lysosomes,peroxisomes,and nuclei by automated tape-collecting ultramicrotome scanning electron microscopy and deep learning techniques,which generates an unprecedented 3D model for mapping liver samples.Furthermore,the morphology of various organelles and the MCSs between the ER and other organelles are systematically analyzed.We found that the ER presents with predominantly flat cisternae and is knitted tightly all throughout the intracellular space and around other organelles.In addition,the ER has a smaller volume-to-membrane surface area ratio than other organelles,which suggests that the ER could be more suited for functions that require a large membrane surface area.Our data also indicate that ER-mitochondria contacts are particularly abundant,especially for branched mitochondria.Our study provides 3D reconstructions of various organelles in liver samples together with important fundamental information for biochemical and functional studies in the liver. | Yi Jiang Linlin Li Xi Chen Jiazheng Liu Jingbin Yuan Qiwei Xie Hua Han | 2021 | Journal of Molecular Cell Biology2021，13，9： | 2 |
| 3 | Structured method for XML-based SVG显示文摘 | Jiazheng Yuan De Xu hong Sheng Hong Bao | 2007 | Journal of Computational Information System2007，3，2： | 1 |
| 4 | Architecture Design & Implementation of XML-Based SVG显示文摘 | Xu De Bao Hong | 2005 | Journal of Computer Research and Development (S1006-8961)2005，42，9： | 1 |
| 5 | Efficacy of an adjusted treatment strategy on the management and in-hospital outcome of patients with STEMI during the COVID-19 pandemic显示文摘Dear Editor,The coronavirus disease 2019(COVID-19) broke out in early December 2019 in Wuhan, China~([1]), which put tremendous pressure on the medical system. A nationwide lockdown and strict quarantine measures proved effective in reducing the spread of the pandemic. However, it might have affected the management of time-dependent diseases such as STelevation myocardial infarction(STEMI)~([2]). | Jing Wang Inam Ullah Zhou Dong Zekang Ye Qian Gu Chuchu Tan Jiazheng Ma Jianzhen Teng Lu Shi Xiaoxuan Gong Yong Li Liang Yuan Zhihui Xu Chunjian Li | 2022 | The Journal of Biomedical Research2022，36，1： | 0 |
| 6 | Synaptic degeneration in the prefrontal cortex of a rat AD model revealed by volume electron microscopy显示文摘Alzheimer’s disease(AD),a neurodegenerative disease,is identified as the most common cause of dementia(Goedert and Spillantini,2006).Typical symptoms of AD in neuropathology are closely associated with changes in synapses and neurons(Serrano-Pozo et al.,2011).The prefrontal cortex(PFC)plays a crucial role in executive function,controlling the highest level of cognitive and emotional processes,and is also vulnerable to neurodegeneration in AD(Salat et al.,2001).While synaptic degeneration is believed to underlie the progressive decline of cognition in AD,specific changes in synaptic structures relevant to AD remain elusive due to a shortage of quantitative tools.Synaptic dysfunction,while key to AD pathophysiology,is difficult to monitor and study in human AD patients. | Yi Jiang Linlin Li Keliang Pang Jiazheng Liu Bohao Chen Jingbin Yuan Lijun Shen Xi Chen Bai Lu Hua Han | 2022 | Journal of Molecular Cell Biology2022，14，3： | 0 |
| 7 | The complete and fully-phased diploid genome of a male Han Chinese显示文摘Since the release of the complete human genome,the priority of human genomic study has now been shifting towards closing gaps in ethnic diversity.Here,we present a fully phased and well-annotated diploid human genome from a Han Chinese male individual(CN1),in which the assemblies of both haploids achieve the telomere-to-telomere(T2T)level.Comparison of this diploid genome with the CHM13 haploid T2T genome revealed significant variations in the centromere.Outside the centromere,we discovered 11,413 structural variations,including numerous novel ones.We also detected thousands of CN1 alleles that have accumulated high substitution rates and a few that have been under positive selection in the East Asian population.Further,we found that CN1 outperforms CHM13 as a reference genome in mapping and variant calling for the East Asian population owing to the distinct structural variants of the two references.Comparison of SNP calling for a large cohort of 8869 Chinese genomes using CN1 and CHM13 as reference respectively showed that the reference bias profoundly impacts rare SNP calling,with nearly 2 million rare SNPs miss-called with different reference genomes.Finally,applying the CN1 as a reference,we discovered 5.80 Mb and 4.21 Mb putative introgression sequences from Neanderthal and Denisovan,respectively,including many East Asian specific ones undetected using CHM13 as the reference.Our analyses reveal the advances of using CN1 as a reference for population genomic studies and paleo-genomic studies.This complete genome will serve as an alternative reference for future genomic studies on the East Asian population. | Chentao Yang Yang Zhou Yanni Song Dongya Wu Yan Zeng Lei Nie Panhong Liu Shilong Zhang Guangji Chen Jinjin Xu Hongling Zhou Long Zhou Xiaobo Qian Chenlu Liu Shangjin Tan Chengran Zhou Wei Dai Mengyang Xu Yanwei Qi Xiaobo Wang Lidong Guo Guangyi Fan Aijun Wang Yuan Deng Yong Zhang Jiazheng Jin Yunqiu He Chunxue Guo Guoji Guo Qing Zhou Xun Xu Huanming Yang Jian Wang Shuhua Xu Yafei Mao Xin Jin Jue Ruan Guojie Zhang | 2023 | Cell Research2023，33，10： | 0 |
| 8 | A graph theory model using human nature structure显示文摘A graph theory model of the human nature structure( GMH) for machine vision and image/graphics processing is described in this paper. Independent from the motion and deformation of contours,the human nature structure( HNS) embodies the most basic movement characteristics of the body. The human body can be divided into basic units like head,torso,and limbs. Using these basic units,a graph theory model for the HNS can be constructed. GMH provides a basic model for human posture processing,and the outline in the perspective projection plane is the body contour of an image. In addition,the GMH can be applied to articulated motion and deformable objects,e. g.,in the design and analysis of body posture,by modifying mapping parameters of the GMH. | 刘佳 Hu Haimiao Duan Miyi Li Wenfa Yuan Jiazheng | 2017 | High Technology Letters2017，23，4： | 0 |
| 9 | Phase transition regulation and caloric effect显示文摘Solid state refrigeration based on caloric effect is regarded as a potential candidate for replacing vapor-compression refrigeration.Numerous methods have been proposed to optimize the refrigeration properties of caloric materials,of which single field tuning as a relatively simple way has been systemically studied.However,single field tuning with few tunable parameters usually obtains an excellent performance in one specific aspect at the cost of worsening the performance in other aspects,like attaining a large caloric effect with narrowing the transition temperature range and introducing hysteresis.Because of the shortcomings of the caloric effect driven by a single field,multifield tuning on multicaloric materials that have a coupling between different ferro-orders came into view.This review mainly focuses on recent studies that apply this method to improve the cooling performance of materials,consisting of enlarging caloric effects,reducing hysteresis losses,adjusting transition temperatures,and widening transition temperature spans,which indicate that further progress can be made in the application of this method.Furthermore,research on the sign of lattice and spin contributions to the magnetocaloric effect found new phonon evolution mechanisms,calling for more attention on multicaloric effects.Other progress including improving cyclability of FeRh alloys by introducing second phases and realizing a large reversible barocaloric effect by hybridizing carbon chains and inorganic groups is described in brief. | Yuan LIN Jiazheng HAO Kaiming QIAO Yihong GAO Fengxia HU Jing WANG Tongyun ZHAO Baogen SHEN | 2023 | Frontiers in Energy2023，17，4： | 0 |
| 10 | Crustal velocity structure of the Northwest Sub-basin of the South China Sea based on seismic data reprocessing显示文摘The deep crustal structure of the Northwest Sub-basin(NWSB)of the South China Sea(SCS)is of great importance for understanding the tectonic nature of the continent-ocean transition(COT)and magmatism in this oceanic basin.The 2-D wide-angle reflection/refraction seismic profile OBS2006-2 is almost parallel to the extinct spreading ridge(ESR)of the NWSB.In addition to the original data,we added the data of two reprocessed OBS stations,and carried out seismic phase re-picking and travel-time imaging to obtain the crustal velocity structure along this profile.Resolution tests demonstrate that the newly acquired velocity structure is more reliable than the prior interpretation.The depth of the Moho(23.5–11.8 km)and crustal thickness(20.5–6.5 km)systematically changes from continental crust of the Xisha Block to the oceanic crust within the NWSB.The COT zone has a width of^20 km and the depth of the Moho decreases from 15.0 to 11.0 km,corresponding to a^4 km decrease in crustal thickness(6–10 km).A high velocity layer(HVL,7.2–7.4 km s–1)exists at the bottom of the crust at the location where the sharp lateral transition of the continental crust to the oceanic crust occurs.Age dating shows that the Doublepeak Seamount was formed at^23 Ma,after the cessation of the NWSB seafloor spreading(~32–25 Ma).The crust beneath the Double-peak Seamount is oceanic with a thickness of 9 km.We infer that this oceanic crust was formed by magmatic upwelling and decompression melting along a pre-existing zone of weakness. | Qiang WANG Minghui ZHAO Haoyu ZHANG Jiazheng ZHANG Enyuan HE Ye YUAN Xuelin QIU | 2020 | Science China Earth Sciences2020，63，11： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员