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KIC 5197256:an eclipsing binary containing a δ Scuti variable star

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Research in Astronomy and Astrophysics 2021年第9期21卷 111-123页

作者： Cheng-Long lv Ali Esamdin Jun-Hui Liu Xiang-Yun Zeng Tao-zhi yang Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China University of Chinese Academy of Sciences Beijing 100049China Department of Astronomy Xiamen UniversityXiamen 361005China School of Physics Xi'an Jiaotong UniversityXi’an 710049China

This paper reports analysis of an eclipsing binary system KIC 5197256 with aδSct variable *** light-curve modeling,several stellar parameters are derived,e.g.,temperature,mass,and mass *** O-C diagram is a straight line with a negative slope which means that its period is almost constant for about 2 *** analyses are performed for the residual light curve after subtracting the binary *** frequency spectrum reveals that one component star is aδScuti *** frequency separation is cross-identified with the histogram graph and the Fourier transform *** on the large separation and density relationship,the mean density of theδSct component is estimated to be 0.05 g·*** frequencies with the same frequency spacing in the range of 25 d-1-34 d-1 are ***,the pulsation amplitudes ofδSct stars increase with decreasing of rotations,so we propose that KIC 5197256 might have a relatively large rotational velocity,and the frequency f10 might be the rotation frequency.

关键词： binaries:eclipsing-stars:individual:KIC 5197256 stars:variables:δScuti stars:oscillations

PR-segment depression during cryoballoon ablation of atrial fibrillation: a case report

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Journal of Geriatric Cardiology 2019年第10期16卷 789-792页

作者： Ming LIANG yang lv Zu-Lu WANG Gui-Tang yang Ming-Yu SUN zhi-Qing JIN Jian DING Ya-Ling HAN Department of Cardiology General Hospital of Northern Theater Command

Cryoballoon ablation has been widely used in the treatment of atrial fibrillation (AF).[1] The main complications of the procedure include pericardial tamponade, pulmonary vein stenosis, and atrial esophageal leakage,... 详细信息

关键词： Atrial fibrillation Chest pain Cryoballoon ablation

ndustrial eco-efficiency and its spatial-temporal differentiation in China

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Frontiers of Environmental Science & Engineering 2012年第4期6卷 559-568页

作者： Wei yang Fengjun JIN Chengjin WANG Chen lv Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China Graduate University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Regional Sustainable Development Modeling Chinese Academy of SciencesBeijing 100101China School of Environment Tsinghua UniversityBeijing 100084China

The aim of this paper is to study the spatialtemporal differentiation of industrial eco-efficiency in China. Using methods based on the data envelopment analysis （DEA） model and exploratory spatial data analysis （ESDA） and data from 1985, 1995, 2005, and 2008 of 30 provinces in China, the spatial-temporal pattern changes in industrial eco-efficiency are discussed. The results show that： first, the patterns of industrial eco-efficiency are dominated by clustering of relatively low efficiency provinces; second, spatial relationships between the industrial eco-efficiencies of different provinces changed slightly throughout the period and the provinces persistently exhibit spatial concentration of relatively low industrial eco-efficiency; finally, there is an obvious trend in the polarization of industrial eco-efficiency, i.e., the higher level spatial units are concentrated in eastern China, and the lower level spatial units are mainly in western and central China. （ESDA）

关键词： industrial eco-efficiency data envelopment analysis (DEA) model exploratory spatial data analysis

Automated Landmark Matching of FY-2 Visible Imagery with Its Applications to the On-Orbit Image Navigation Performance Analysis and Improvements

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Chinese Journal of Electronics 2014年第3期23卷 649-654页

作者： yang Lei FENG Xiaohu lv Ke SHANG Jian National Satellite Meteorological Center China Meteorological Administration Key Laboratory of Radiometric Calibration and Validation for Environmental Satellite Graduate University of Chinese Academy of Sciences

To analysis and improve China Fengyun-2(FY-2, spin-stabilized geosynchronous meteorological satellite) on-orbit Image navigation(IN) performance, an automated landmark matching algorithm(FY-2 automated landmark matching, FALM) for the Visible and infrared spin scan radiometer(VISSR) visible channel has been developed at China National satellite meteorological center(NSMC). FALM is based on a correlation algorithm used to match the observed landmark to the corresponding landmark extracted from the template. FALM can overcome the previous methods’ shortcomings, such as the dependency on ten-year long satellite data and US Defense Mapping Agency data. Each step of FALM, generation of the landmark templates, binarization processing for observed images, image matching between observed images and landmark templates are described. Exclusion of false matching is done by several strict quality measures including cloud contamination detection, prior knowledge check,neighborhood filter and Hypothesis test. 400 days of FY-2data have been processed by FALM and the results have showed that mainly five factors which can influence the FY-2 on-orbit IN performance: orbit control, the integrity of the known IN parameters, the satellite viewing zone adjustment, beta angle computation and the moment of sunshine pressure. Because of FALM’s high processing speed and accuracy, it is ready to put into operation for the FY-2 IN improvement, as well as for operational monitoring purposes, and will be further developed for FY-4.

关键词： Automated landmark matching FY-2 On-orbit image navigation performance analysis

Comparison of Fungicidal Difference of Two Arylpyrazoles Based on the Crystal Structures, Density Functional Theory Calculation and Molecular Docking

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Chinese Journal of Structural Chemistry 2019年第11期38卷 1845-1856页

作者： LIU Yuan-Yuan LI Yi lv Kun-zhi School of Pharmaceutical and Chemical Engineering Chengxian CollegeSoutheast UniversityNanjing 210088China College of Food Science and Light Industry Nanjing Technical UniversityNanjing 211816China Nanjing Sanhome Pharmaceutical Co Ltd. Nanjing 210018China

Two arylpyrazoles I andⅡwere synthesized and characterized by NMR and single-crystal X-ray *** I displayed 71.4%fungicidal inhibition rate against Rhizoctonia solani at 0.1 ppm,better than the control pyraclostrobin,whereasⅡhad little *** fungicidal difference was discussed from theoretic level based on the crystal structure,density functional theory(DFT)calculation and molecular *** B3 LYP/6-31G^**level was employed to explore the HOMO-LUMO energy gap and charge *** docking was performed on the probable target protein bc1-enzyme *** calculation and docking studies supported the in vitro findings.

关键词： arylpyrazole fungicidal difference crystal structure density functional theory calculation molecular docking

MOBILE PHONE AS PERVASIVE ELECTRONIC MEDIA TO RECORD AND EVALUATE HUMAN GAIT BEHAVIOR

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Journal of Innovative Optical Health Sciences 2012年第1期5卷 28-35页

作者： QIAN WANG yang YU YONGQIANG lv JING LIU Department of Biomedical Engineering School of Medicine Tsinghua UniversityBeijing 100084P.R.China Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R.China

Gait recognition has been of great importance for disease diagnosis,rehabilitation assessment,as well as personal *** gait analysis generally has to rely heavily on complex,expensive data acquisition and computing *** significantly simplify the evaluation process the mobile phone,which is one of the most indispensable electronic media in human daily life,was adopted as a pervasive tool for gait study,by using its digital imaging recording and analysis *** basic procedure to record and quantify the video of human gait was illustrated and demonstrated through conceptual *** applications were *** fundamental and practical issues raised in such flexible technology were pointed *** method is expected to be widely used in future human analysis.

关键词： Gait analysis telemedicine pervasive medicine low cost medicine

Minmax Common Due-Window Assignment Scheduling with Deteriorating Jobs

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Journal of the Operations Research Society of China 2024年第3期12卷 681-693页

作者： Dan-yang lv Jing Xue Ji-Bo Wang School of Mechatronics Engineering Shenyang Aerospace UniversityShenyang110136LiaoningChina

This paper investigates the common due-window assignment scheduling problem with deteriorating jobs on a single machine in which the processing time of a job is a proportional function of its starting *** goal is to minimize the maximum value of earliness and tardiness penalties,as well as due-window location cost,and size *** on whether the location and size of due-window are known,this paper studies three relevant cases,all of which are solvable in polynomial time.

关键词： Scheduling Single machine Deteriorating jobs Common due-window Earliness Tardiness

Artificial Intelligence Methods Applied to Catalytic Cracking Processes

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Big Data Mining and Analytics 2023年第3期6卷 361-380页

作者： Fan yang Mao Xu Wenqiang Lei Jiancheng lv College of Computer Science Sichuan UniversityChengdu 610041China Algorithm and Big Data Center New Hope Liuhe Co LtdChengdu 610000China. Data Intelligence Lab New Hope Liuhe Co LtdChengdu 610000China. College of Computer Science Sichuan UniversityChengdu 610041China.

Fluidic Catalytic Cracking(FCC)is a complex petrochemical process affected by many highly non-linear and interrelated *** yield analysis,flue gas desulfurization prediction,and abnormal condition warning are several key research directions in *** paper will sort out the relevant research results of the existing Artificial Intelligence(AI)algorithms applied to the analysis and optimization of catalytic cracking processes,with a view to providing help for the follow-up *** with the traditional mathematical mechanism method,the AI method can effectively solve the difficulties in FCC process modeling,such as high-dimensional,nonlinear,strong correlation,and large *** methods applied in product yield analysis build models based on massive *** fitting the functional relationship between operating variables and products,the excessive simplification of mechanism model can be avoided,resulting in high model *** methods applied in flue gas desulfurization can be usually divided into two stages:modeling and *** the modeling stage,data-driven methods are often used to build the system model or rule base;In the optimization stage,heuristic search or reinforcement learning methods can be applied to find the optimal operating parameters based on the constructed model or rule *** methods,including data-driven and knowledge-driven algorithms,are widely used in the abnormal condition ***-driven methods have advantages in interpretability and generalization,but disadvantages in construction difficulty and prediction *** the data-driven methods are just the ***,some studies combine these two methods to obtain better results.

关键词： neural networks intelligent optimization algorithm catalytic cracking lumped kinetics

Distribution Characteristics and Metallogenic Regularity of Graphite Deposits in Qinling Orogen,China

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Acta Geologica Sinica(English Edition) 2015年第4期89卷 1244-1263页

作者： FENG yangwei QU Hongjun yang Chenyi lv Lushi State Key Laboratory of Continental Dynamics Department of GeologyNorthwest University Xi'an Institute of Geology and Mineral Resources Xi'an Center of Geological Survey China Geological Survey Key Laboratory for the Study of Focused Magmatism and Giant Ore Deposits MLR Shaanxi Earthquake Administration Aerophotogrammetrical Surveying and Remote Sensing Bureau CNACG

Qinling orogen is one of the five main repository distribution provinces of large scale graphite resources. Graphite occurrence strata are multitudinous including NeoArchaean group to Neopaleozoic. Mineral deposit types are complete consisting of crystal flaky graphite deposit and aphanitic graphite deposit, ore types of the former are main graphite gneiss, graphite schist and graphitized marble, and ore types of the latter are main graphite layer metamorphosised from coal bed and graphitic carbargilite. At present, most graphite deposits with low research degree only implement preliminary investigations of the graphite resource, which has a good prospect. Based on the basic material of dozens of graphite deposits, spots and plays discovered in the Qinling orogen, this paper applied geologic multidisciplinary analysis method to disclose the graphite deposit types of the Qinling orogen, mainly through outdoors geologic survey and specimen examination with analysis of some typical deposits： regional metamorphism crystal graphite deposits and thermo-contact metamorphic aphanitic graphite deposits, with the control of latitudinally trending regional tectonic, graphite deposits of the Qinling orogen distribute sublatitudinally trending three large ore belts： I the Neoarchean-Proterozoic basement crystal graphite enrichment deposits zone along the south margin of North China plate; II the Carboniferous intermountain basin group aphanitic graphite enrichment deposits zone near the Shangdan suture of the West Qinling; III Paleozoic crystal graphite enrichment deposits zone in the Qinling paleomicroplate of the west part of the East *** are reached from multiple inquiries： Qinling multi-cycle complex continental collision orogen zone has experienced multiple tectonic framework transformation and polyphase tectonic thermal event from NeoArchean Erathem adjointing multiple graphite tectonic mineralization cycle. In the light of chief control of mineralization a

关键词： Qinling orogen graphite deposits graphite gneiss Metallogenic regularity