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VisuaLizations As Intermediate Representations (VLaiR): An approach for applying deep learning-based computer vision to non-image-based data

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Visual Informatics 2022年第3期6卷 35-50页

作者： ai jiang Miguel A.Nacenta Juan Ye School of Computer Science University of St AndrewsUK University of Victoria Canada

Deep learning algorithms increasingly support automated systems in areas such as human activity recognition and purchase *** identify a current trend in which data is transformed first into abstract visualizations and then processed by a computer vision deep learning *** call this VisuaLization As Intermediate Representation(VLaiR)and believe that it can be instrumental to support accurate recognition in a number of fields while also enhancing humans’ability to interpret deep learning models for debugging purposes or for personal *** this paper we describe the potential advantages of this approach and explore various visualization mappings and deep learning *** evaluate several VLaiR alternatives for a specific problem(human activity recognition in an apartment)and show that VLaiR attains classification accuracy above classical machine learning algorithms and several other non-image-based deep learning algorithms with several data representations.

关键词： Information visualization Convolutional neural networks Human activity recognition Smart homes Data representation Intermediate representations Interpretability Machine learning Deep learning

Encapsulating soluble active species into hollow crystalline porous capsules beyond integration of homogeneous and heterogeneous catalysis

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National Science Review 2020年第1期7卷 37-45页

作者： Guorui Cai Meili Ding Qianye Wu Hai-long jiang Hefei National Laboratory for Physical Sciences at the Microscale CAS Key Laboratory of Soft Matter Chemistry Collaborative Innovation Center of Suzhou Nano Science and Technology Department of Chemistry University of Science and Technology of China

Homogeneous molecular catalysts and heterogeneous catalysts possess complementary strengths, and are of great importance in laboratory/commercial procedures. While various porous hosts, such as polymers, carbons, silica, metal oxides and zeolites, have been used in an attempt to heterogenize homogeneous catalysts, realizing the integration of both functions at the expense of discounting their respective advantages, it remains a significant challenge to truly combine their intrinsic strengths in a single catalyst without compromise. Here, we describe a general template-assisted approach to incorporating soluble molecular catalysts into the hollow porous capsule, which prevents their leaching due to the absence of large intergranular space. In the resultant yolk(soluble)–shell(crystalline) capsules, the soluble yolks can perform their intrinsic activity in a mimetic homogeneous environment, and the crystalline porous shells endow the former with selective permeability, substrate enrichment, size-selective and heterogeneous cascade catalysis, beyond the integration of the respective advantages of homogeneous and heterogeneous catalysts.

关键词： metal–organic frameworks hollow capsules molecular catalyst heterogeneous catalysis cascade reaction

Salt Stress-induced Programmed Cell Death in Rice Root Tip Cells

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Journal of Integrative Plant Biology 2007年第4期49卷 481-486页

作者： Jian-You Li ai-Liang jiang Wei Zhang Department of Biochemistry and Molecular Biology College of Life Sciences Nanjing Agricultural University Nanjing 210095 China

Salt stressed rice root tips were used to investigate the changes of reactive oxygen species （ROS） and antioxidant enzymes at the early stages of programmed cell death （PCD）. The results indicated that 500 mmol/L NaCI treatment could lead to specific features of PCD in root tips, such as DNA ladder, nuclear condense and deformation, and transferase mediated dUTP nick end labeling positive reaction, which were initiated at 4 h of treatment and pro- gressed thereafter. Cytochrome c release from mitochondria into cytoplasm was also observed, which occurred at 2 h and was earlier than the above nuclear events. In the very early phase of PCD, an immediate burst in hydrogen peroxide and superoxide anion production rate was accompanied by two-phase changes of superoxide dismutases and ascorbate peroxidase. A short period of increase in the activity was followed by prolonged impairment. Thus, we conclude that salt can induce PCD in rice root tip cells, and propose that in the early phase of rice root tip cell PCD, salt stress-induced oxidative burst increased the antioxidant enzyme activity, which, in turn, scavenged the ROS and abrogated PCD. Also, when the stress is prolonged, the antioxidant system is damaged and accumulated ROS induces the PCD process, which leads to cytochrome c release and nuclear change.

关键词： antioxidant system Oryza sativa programmed cell death reactive oxygen species salt stress.

A Numerical Study on the Responses of Wave-Driven Circulation to Varying Incident Wave Forcing and Reef Morphology in A Reef-Lagoon-Channel System

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China Ocean Engineering 2022年第6期36卷 933-946页

作者： YAO Yu WU Ji LI jiang-xia CHEN long School of Hydraulic and Environmental Engineering Changsha University of Science and TechnologyChangsha 410114China Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province Changsha 410114China

Wave-driven circulation in a reef-lagoon-channel system has significant ecological,geomorphological,and environmental ***,there is still research gap in fully understanding the responses of wave-driven circulation in the system to varying incident wave forcing and reef *** better interpret the wave-current process inside an idealized reef-lagoon-channel configuration,a numerical model based on the horizontally two-dimensional(2DH)fully nonlinear Boussinesq equations is presented in this *** adopted model is firstly validated by a published laboratory dataset for wave height,wave setup and mean current in the ***,the impacts of wave forcing(incident wave height,incident wave period,reef-flat wave level)and reef morphological(fore-reef slope,cross-shore reef-flat width,channel width,reef roughness)factors that are not fully considered in the previous laboratory studies are reported through the numerical simulations in this ***,the model is applied to analyze the wave pump efficiency parameter in the system,and an empirical equation to predict this parameter is also proposed.

关键词： wave-induced setup circulation cell coral reef wave pump efficiency Boussinesq equations

Simultaneous Approximation Ratios for Parallel Machine Scheduling Problems

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Journal of the Operations Research Society of China 2019年第3期7卷 485-500页

作者： long Wan Jin-jiang Yuan School of Information Technology Jiangxi University of Financeand EconomicsNanchang 310013China School of Mathematics and Statistics Zhengzhou UniversityZhengzhou 450001China

Motivated by the problem to approximate all feasible schedules by one schedule in a given scheduling environment,we introduce in this paper the concepts of strong simultaneous approximation ratio and weak simultaneous approximation *** we study the two variants under various scheduling environments,such as non-preemptive,preemptive or fractional scheduling on identical,related or unrelated machines.

关键词： Scheduling Simultaneous approximation ratio Global fairness

Numerical and Experimental Study on Hydrodynamic Performance of A Novel Semi-Submersible Concept

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China Ocean Engineering 2018年第2期32卷 144-156页

作者： GAO Song TAO long-bin KOU Yu-feng LU Chao SUN jiang-long State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration Shanghai Jiao Tong UniversityShanghai 200240China Department of Naval Architecture and Marine Engineering University of StrathclydeGlasgowG11XQUnited Kingdom China Ship Development and Design Center Wuhan 430064China School of Naval Architecture and Ocean Engineering Huazhong University of Science and TechnologyWuhan 430074China

The Multiple Column Platform(MCP) semi-submersible is a newly proposed concept, which differs from the conventional semi-submersibles, featuring centre column and middle pontoon. It is paramount to ensure its structural reliability and safe operation at sea, and a rigorous investigation is conducted to examine the hydrodynamic and structural performance for the novel structure concept. In this paper, the numerical and experimental studies on the hydrodynamic performance of MCP are performed. Numerical simulations are conducted in both the frequency and time domains based on 3D potential theory. The numerical models are validated by experimental measurements obtained from extensive sets of model tests under both regular wave and irregular wave conditions. Moreover, a comparative study on MCP and two conventional semi-submersibles are carried out using numerical ***, the hydrodynamic characteristics, including hydrodynamic coefficients, natural periods and motion response amplitude operators(RAOs), mooring line tension are fully examined. The present study proves the feasibility of the novel MCP and demonstrates the potential possibility of optimization in the future study.

关键词： multiple column platform(MCP) semi-submersible platform numerical simulation model test response amplitude operators(RAOs)

Effect of Cr Content on the Compression Properties and Abrasive Wear Behavior of the High-Volume Fraction(TiC–TiB_2)/Cu Composites

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Acta Metallurgica Sinica(English Letters) 2014年第5期27卷 951-956页

作者： Feng Qiu Yue Han ai Cheng Jianbang Lu Qichuan jiang Key Laboratory of Automobile Materials Ministry of EducationDepartment of Materials Science and EngineeringJilin University

The （TiC-TiB2）/Cu composites with 50 vol% TiC-TiB2 ceramic particles were successfully fabricated by the combustion synthesis and hot press consolidation in a Cu-Ti-B4C-Cr system. The effects of the Cr content on the microstructures, hardness, compression properties, and abrasive wear behaviors of the composites were investigated. The final products consist of only Cu, TiC, and TiB2 phases, and the ceramic particles are distributed uniformly in these composites. The size of the ceramic particles decreases with Cr addition. As the Cr content increases, the yield strength, ultimate compression strength, microhardness, and abrasive wear resistance of the composites increase, and the fracture strain decreases.

关键词： Metal matrix composites Powder metallurgy Combustion synthesis Abrasive wear

Does polar amplification exist in Antarctic surface during the recent four decades?

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Journal of Mountain Science 2021年第10期18卷 2626-2634页

作者： WANG Shi-meng XIE ai-hong ZHU jiang-ping State Key Laboratory of Cryospheric Sciences Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China

There are numerous studies on polar amplification and its influence on mid-latitude weather and ***,assessments on whether polar amplification occurs in Antarctica are rarely *** on the latest atmospheric reanalysis of ERA5 produced by European Centre for Medium-Range Weather Forecasts(ECMWF),we have defined the Antarctic amplification index,and calculated the trend of annual and seasonal Surface air Temperature(SAT)mean during 1979-2019 for Antarctic Ice Sheet(aiS)and the trend mean of different meridional sectors of Antarctic sub regions including East Antarctic Ice Sheet(EaiS),West Antarctic Ice Sheet(WaiS)and Antarctic Peninsula(AP).Antarctic amplification shows regional differences and seasonal *** shows a slight warming with the largest magnitude in *** temperature anomalies indicate the least fluctuations in austral summer,and the more fluctuations in winter and *** austral summer,the warming trend domains EaiS and WaiS,while the cooling trend appears over *** zonal mean in Southern Hemisphere maintains a warming trend in the low latitudes,and fluctuates greatly in the middle and high *** strongest Antarctic amplification phenomenon occurs in spring,with the amplification index of *** AP,the amplification occurs in austral autumn,and the amplification index is *** South Pole and the surrounding regions,SAT for land only fluctuates largely and shows different trends in different *** mechanism of Antarctic amplification is unclear till now,and its research suffers from the limitation of measured *** suggests that future research needs progress in comprehensive ground observation network,remote sensing data accumulation,and high-resolution climate modeling with better representation of both atmospheric and cryospheric processes in Antarctica.

关键词： Antarctic amplification Surface air temperature Meridional Sectors Three Antarctic sub regions

An improved and scalable process for 3,8-diazabicyclo[3.2.1]-octane analogues

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Chinese Chemical Letters 2011年第5期22卷 523-526页

作者： long jiang Huang Da Wei Teng College of Chemical Engineering Qingdao University of Science & Technology Qingdao 266042 China

An improved and scalable process for substituted 3,8-diazabicyclo[3.2.1]octane was developed.N-Benzyl-2,5-dicarbethoxy-pyrrolidine 2 was reduced to N-benzyl-2.5-dihydroxymethylpyrrolidine 9 and subsequently debenzylated to afford N-Boc-2,5- dihydroxymethylpyrrolidine *** mesylation of the diol 10 and cyclization with benzylamine,a diversity of scaffold,3,8- diazabicyclo[3.2.1]octane analogue 12 was obtained in a total yield of 42%in five steps.

关键词： 3 8-Diazabicyclo[3.2.1]octane:Scaffold Process development