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Multiple CRC-aided variable successive cancellation list decoder of polar codes

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The Journal of China Universities of Posts and Telecommunications 2017年第2期24卷 83-88页

作者： cao miao Zhao Shuang Zhao Shengmei Institute of Signal Processing and Transmission Nanjing University of Posts and Telecommunications Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications

In order to change the path candidates, reduce the average list size, and make more paths pass cyclic redundancy check （CRC）, multiple CRC-aided variable successive cancellation list （SCL） decoding algorithm is proposed. In the decoding algorithm, the whole unfrozen bits are divided into several parts and each part is concatenated with a corresponding CRC code, except the last part which is concatenated with a whole unfrozen CRC code. Each CRC detection is performed, and only those satisfying each part CRC become the path candidates. A variable list is setup for each part to reduce the time complexity. Variable list size is setup for each part to reduce the time complexity until one survival path in each part can pass its corresponding CRC. The results show that the proposed algorithm can reduce the average list size, and the frame error rate （FER） performance, and has a better performance with the increase of the part number.

关键词： polar codes successive cancellation list decoder cyclic redundancy check list path variable list size

维普期刊数据库

The Brain Connectome for Chinese Reading

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Neuroscience Bulletin 2022年第9期38卷 1097-1113页

作者： Wanwan Guo Shujie Geng miao cao Jianfeng Feng Institute of Science and Technology for Brain-Inspired Intelligence Fudan UniversityShanghai200433China Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence(Ministry of Education) Fudan UniversityShanghai200433China

Chinese,as a logographic language,fundamentally differs from alphabetic languages like *** neuroimaging studies have mainly focused on alphabetic languages,while the exploration of Chinese reading is still an emerging and fast-growing research ***,a growing number of neuroimaging studies have explored the neural circuit of Chinese ***,we summarize previous research on Chinese reading from a connectomic *** evidence indicates that the left middle frontal gyrus is a specialized hub region that connects the ventral with dorsal pathways for Chinese ***,the orthography-to-phonology and orthography-to-semantics mapping,mainly processed in the ventral pathway,are more specific during Chinese ***,in addition to the left-lateralized language-related regions,reading pathways in the right hemisphere also play an important role in Chinese ***,we comprehensively review prior findings and emphasize several challenging issues to be explored in future work.

关键词： Brain connectome Chinese reading Word recognition Reading comprehension Structural connectivity Functional connectivity

Assessing the Adverse Impacts of PM_(2.5)on Olfactory System Using an Air-liquid Interface Culture Model of Primary Olfactory Epithelial Cells

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Chemical Research in Chinese Universities 2023年第3期39卷 415-424页

作者： WANG Huan XU Ting WEI Sheng cao miao YIN Daqiang Key Laboratory of Yangtze River Water Environment Ministry of EducationCollege of Environmental Science and EngineeringTongji UniversityShanghai200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092China

The air-liquid interface(ALI)culture is a kind of recently developed system,which has proved its availability in simulating the biology of respiratory tract epithelial *** this study,an ALI-based mouse primary olfactory epithelial cell(OEC)model was established to perform the exposure of PM_(2.5)(PM=particulate matter)collected from Dianshan Lake(Shanghai)and Wangdu(Hebei).The results showed that PM_(2.5)in both regions caused a decrease in cell viability in a dose-dependent *** 0.5 and 5µg/cm^(2)(around ambient concentrations)of PM_(2.5)disrupted OEC membrane integrity and produced oxidative stress with elevated indicators of malondialdehyde(MDA)and reactive oxygen species(ROS).In transcriptomic sequencing,the terms concerning inflammatory cytokines and second messenger cyclic adenosine-3′,5′-monophoshate(cAMP)were enriched in two *** cytokine array showed the levels of some cytokines were altered,although inflammatory responses may not remarkably ***,PM_(2.5)disturbed cAMP contents and key genes in the cAMP signaling *** effects of PM_(2.5)of both regions were largely consistent,while Wangdu samples caused more ROS and Dianshan Lake samples tended to induce inflammatory ***,with the application of a novel ALI-based in vitro OEC model,our study demonstrated that ambient PM_(2.5)has the ability to threaten the physiologies and functions of the olfactory system.

关键词： Air-liquid interface Olfactory epithelial cell PM_(2.5) Inflammatory cytokines Cyclic adenosine-3′,5′-monophoshate(cAMP)

Microstructural evolution and deformation behavior of copper alloy during rheoforging process

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Journal of Materials Science & Technology 2020年第7期42卷 17-27页

作者： miao cao Qi Zhang Ke Huang Xinjian Wang Botao Chang Lei Cai School of Mechanical Engineering Xi’an Jiaotong UniversityXi’an710049China Zhejiang Dunan Artificial Environment Co. Ltd.Hangzhou310053China School of Science Xi’an Jiaotong UniversityXi’an710049China

A complete rheo-forming process was carried out to investigate the rheoforging process of C3771 lead brass valve,starting from the semi-solid billet preparation to rheoforging experiments and material performance *** near-spherical micro-grains with mean equivalent diameter of 56.3μm,shape factor of 0.78 were obtained when the raw C3771 lead brass were rotary swaged to a radial strain of0.22 and then heated to 895℃for 5 *** Forge 3 D software was used to analyze the temperature,strain and strain rate distribution of copper valve for obtain the reasonable process parameters during the subsequent rheoforging *** experiment results showed that near-spherical micro-grains were stretched and refined to about 35.7-43.4μm in different positions due to the dynamic recrystallization during the rheoforging *** cap thread and nut thread failure torque of the so-produced valve are also discovered to be higher than the traditionally forged copper valve with dendrite micro-grains,with an enhancement of the cap and thread failure torque of 42.2%and 28%,re s pectively.

关键词： Semi-solid Microstructural evolution Dynamic recrystallization Mechanical properties

维普期刊数据库

Frequency-Resolved Connectome Hubs and Their Test-Retest Reliability in the Resting Human Brain

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Neuroscience Bulletin 2022年第5期38卷 519-532页

作者： Lei Wang Xiaodan Chen Yuehua Xu miao cao Xuhong Liao Yong He State Key Laboratory of Cognitive Neuroscience and Learning Beijing Normal UniversityBeijing 100875China Beijing Key Laboratory of Brain Imaging and Connectomics Beijing Normal UniversityBeijing 100875China IDG/McGovern Institute for Brain Research Beijing Normal UniversityBeijing 100875China Institute of Science and Technology for Brain-Inspired Intelligence Fudan UniversityShanghai 200433China Key Laboratory of Computational Neuroscience and BrainInspired Intelligence(Fudan University) Ministry of EducationShanghai 200433China School of Systems Science Beijing Normal UniversityBeijing 100875China Chinese Institute for Brain Research Beijing 102206China

Functional hubs with disproportionately extensive connectivities play a crucial role in global information integration in human brain ***,most resting-state functional magnetic resonance imaging(R-fMRI)studies have identified functional hubs by examining spontaneous fluctuations of the blood oxygen level-dependent signal within a typical low-frequency band(e.g.,0.01–0.08 Hz or 0.01–0.1 Hz).Little is known about how the spatial distributions of functional hubs depend on frequency bands of ***,we used repeatedly measured R-fMRI data from 53 healthy young adults and a degree centrality analysis to identify voxelwise frequency-resolved functional hubs and further examined their test-retest reliability across two *** showed that a wide-range frequency band(0.01–0.24 Hz)accessible with a typical sampling rate(fsample=0.5 Hz)could be classified into three frequency bands with distinct patterns,namely,low-frequency(LF,0.01–0.06 Hz),middle-frequency(MF,0.06–0.16 Hz),and high-frequency(HF,0.16–0.24 Hz)*** functional hubs were mainly located in the medial and lateral frontal and parietal cortices in the LF band,and in the medial prefrontal cortex,superior temporal gyrus,parahippocampal gyrus,amygdala,and several cerebellar regions in the MF and HF *** hub regions exhibited fair to good test-retest reliability,regardless of the frequency *** presence of the three frequency bands was well replicated using an independent R-fMRI dataset from 45 healthy young *** findings demonstrate reliable frequency-resolved functional connectivity hubs in three categories,thus providing insights into the frequency-specific connectome organization in healthy and disordered brains.

关键词： Connectome Hubs Frequency Degree centrality Test-retest reliability

Disruption of three polyamine uptake transporter genes in rice by CRISPR/Cas9 gene editing confers tolerance to herbicide paraquat

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aBIOTECH 2022年第2期3卷 140-145页

作者： Yu-Shu Lyu Li-miao cao Wen-Qian Huang Jian-Xiang Liu Hai-Ping Lu State Key Laboratory of Plant Physiology and Biochemistry Cllge of Life SciencesZhejang UniversityHangzhou 310058China State Key Laboratory of Rice Biology Zhejang Provincial Key Laboratory of Crop Genetie ResourcesInstitute of Crop ScienceZhejiang UniversityHangzhou 310058China

Weeds are a major biotic constraint that can cause dramatic crop production *** technology has been widely used by farmers as the most cost-effective weed control measure,and development of new strategy to improve herbicide tolerance in plants is urgently *** CRISPR/Cas9-based genome editing tool has been used in diverse applications related to agricultural technology for crop *** we identified three polyamine uptake transporter(PUT)genes in rice that are homologous to the Arabidopsis *** successfully demonstrate that CRISPR/Cas9-targeted mutagenesis of OsPUT1/2/3 greatly improves paraquat resistance in rice without obvious yield ***,manipulation of these loci could be valuable for producing transgene-free rice with improved herbicide resistance in future.

关键词： Paraquat OsPUTs CRISPR/Cas9 Rice

The structural connectome in ADHD

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Psychoradiology 2021年第4期1卷 257-271页

作者： Xuan Bu miao cao Xiaoqi Huang Yong He State Key Laboratory of Cognitive Neuroscience and Learning Beijing Normal UniversityBeijing 100875China Beijing Key Laboratory of Brain Imaging and Connectomics Beijing Normal UniversityBeijing 100875China IDG/McGovern Institute for Brain Research Beijing Normal UniversityBeijing 100875China Institute of Science and Technology for Brain-Inspired Intelligence Fudan UniversityShanghai 200433China Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence(Fudan University) Ministry of EducationShanghai 200433China Huaxi MR Research Center West China Hospital of Sichuan UniversityChengdu 610041China Chinese Institute for Brain Research Beijing 102206China

Attention-deficit/hyperactivity disorder(ADHD)has been conceptualized as a brain dysconnectivity *** the past decade,noninvasive diffusion magnetic resonance imaging(dMRI)studies have demonstrated that individuals with ADHD have alterations in the white matter structural connectome,and that these alterations are associated with core symptoms and cognitive deficits in *** review aims to summarize recent dMRI-based structural connectome studies in ADHD from voxel-,tractography-,and network-based ***-and tractography-based studies have demonstrated disrupted microstructural properties predominantly located in the frontostriatal tracts,the corpus callosum,the corticospinal tracts,and the cingulum bundle in patients with ***-based studies have suggested abnormal global and local efficiency as well as nodal properties in the prefrontal and parietal regions in the ADHD structural *** altered structural connectomes in those with ADHD provide significant signatures for prediction of symptoms and diagnostic *** studies suggest that abnormalities in the structural connectome may be one of the neural underpinnings of ADHD psychopathology and show potential for establishing imaging biomarkers in clinical ***,given that there are inconsistent findings across studies due to sample heterogeneity and analysis method variations,these ADHD-related white matter alterations are still far from informing clinical *** studies with larger and more homogeneous samples are needed to validate the consistency of current results;advanced dMRI techniques can help to generatemuchmore precise estimation of whitematter pathways and assure specific fiber configurations;and finally,dimensional analysis frameworks can deepen our understanding of the neurobiology underlying ADHD.

关键词： attention-deficit/hyperactivity disorder white matter diffusion MRI connectomics

InGaN/GaN multi-quantum-well-based light-emitting and photodetective dual-functional devices

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Frontiers of Optoelectronics 2009年第4期2卷 442-445页

作者： cao miao Hai LU Dunjun CHEN Rong ZHANG Youdou ZHENG Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials Department of Physics Nanjing University

In this study, we fabricated and characterized an InGaN/GaN multi-quantum-well(MQW)-based p-n junction photodetector(PD) for voltage-selective lightemitting and photo-detective applications. The photodetector exhibits a cutoff wavelength at around 460 nm which is close to its electroluminescence(EL) peak position. The rejection ratio was determined to be more than three orders of magnitude. Under zero bias, the responsivity of the device peaks at 371 nm, with a value of 0.068 A/W, corresponding to a 23% quantum *** overall responsivity gradually rises as a function of reverse bias, which is explained by the enhanced photocarrier collection efficiency.

关键词： GaN multi-quantum-well (MQW) photodetector (PD) light emitting diode (LED)

Quantitative analysis of optic disc changes in school-age children with ametropia based on artificial intelligence

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International Journal of Ophthalmology(English edition) 2023年第11期16卷 1727-1733页

作者： Fang Liu Xing-Hui Yu Yu-Chuan Wang miao cao Lian-Feng Xie Jing Liu Lin-Lin Liu The First Clinical Medical College of Gannan Medical University Ganzhou 341000Jiangxi ProvinceChina Department of Ophthalmology the First Affiliated Hospital of Gannan Medical UniversityGanzhou 341000Jiangxi ProvinceChina

AIM:To explore changes in the optic disc and peripapillary atrophy(PPA)in school-age children with ametropia using color fundus photography combined with artificial intelligence(AI)***:Based on the retrospective case-controlled study,226 eyes of 113 children aged aged 6–12y were enrolled from October 2021 to May *** to the results of spherical equivalent(SE),the children were divided into four groups:low myopia group(66 eyes),moderate myopia group(60 eyes),high myopia group(50 eyes)and emmetropia control group(50 eyes).All subjects underwent un-aided visual acuity,dilated pupil optometry,best-corrected visual acuity(BCVA),intraocular pressure,ocular axis measurement and color fundus ***:The width of PPA,horizontal diameter ratio of PPA to the optic disc and area ratio of PPA to the optic disc were significantly different among the four groups(P<0.05).The width of the nasal and temporal neuroretinal rim,the roundness of the optic disc,the height of PPA,the vertical diameter ratio of PPA to the optic disc,and the average density of PPA in the high myopia group were significantly different compared with the other three groups(P<0.05).There were strong negative correlations between SE and area ratio of PPA to the optic disc(r=-0.812,P<0.001)and strong positive correlation between axial length(AL)and area ratio of PPA to the optic disc(r=0.736,P<0.001).CONCLUSION:In school-age children with high myopia,the nasal and temporal neuroretinal rims are narrowed and even lost,which have high *** area ratio of the PPA to the optic disc could be used as an early predictor of myopia progression,which is of great significance for the development prevention and management of myopia.

关键词： optic disc artificial intelligence ametropia peripapillary atrophy spherical equivalent