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A real-time data smoothness method based on xPC-Target

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High Technology Letters 2010年第1期16卷 99-102页

作者：王熠 He Hongwen lin yi School of Mechanical Beijing Institute of Technology Beijing 100081 P.R. China Beijing Automobile Technology Center Beijing 100021 P.R. China

A method of real-time data smoothness which is applied in a hardware-in-the-loop （HIL） simulation platform for a plug-in hybrid electric vehicle synthetical power device is described. The input signal of the platform comes from a AC/DC switch power with output containing noises. A linear slide average arithmetic is applied to smooth the noises. To average a certain number input sample signals, this method can decrease the noises voltage level, which meet the requirement of the simulation platform. The efficiency and signal delay time are presented to describe the result of this method, and a statistical index is used to judge the arithmetic＇ s efficiency. The tests results show that the arithmetic fit the requirement of the HIL simulation platform.

关键词： real-time simulation data smoothness arithmetic linear slide average (LSA)

Progress in the Study of Molecular Genetic Improvements of Poplar in China

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Journal of Integrative Plant Biology 2006年第9期48卷 1001-1007页

作者： Shan-Zhi lin Zhi-yi Zhang Qian Zhang Yuan-Zhen lin Key Laboratory for Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education Beijing Forestry University Beijing 100083 China

The poplar is one of the most economically important and intensively studied tree species owing to its wide application in the timber industry and as a model material for the study of woody plants. The natural resource of poplars in China is replete. Over the past 10 years, the application of molecular biological techniques to genetic improvements in poplar species has been widely studied in China. Recent advances in molecular genetic improvements of poplar, including cDNA library construction, gene cloning and identification, genetic engineering, gene expression, genetic linkage map construction, mapping of quantitative trait loci （QTL） and molecular-assisted selection, are reviewed in the present paper. In addition, the application of modern biotechnology to molecular improvements in the genetic traits of the poplar and some unsolved problems are discussed.

关键词： poplar gene engineering genetic improvement genetic linkage maps molecular marker quantitative trait loci (QTL) mapping

Classification of Northeast China Cold Vortex Activity Paths in Early Summer Based on K-means Clustering and Their Climate Impact

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Advances in Atmospheric Sciences 2021年第3期38卷 400-412页

作者： yihe FANG Haishan CHEN yi lin Chunyu ZHAO yitong lin Fang ZHOU Institute of Atmospheric Environment China Meteorological AdministrationShenyang 110016China Regional Climate Center of Shenyang Liaoning Province Meteorological AdministrationShenyang 110016China Key Opening Laboratory for Northeast China Cold Vortex Research China Meteorological AdministrationShenyang 110016China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster Ministry of Education/International Joint Research Laboratory on Climate and Environment ChangeNanjing University of Information Science and TechnologyNanjing 210044China Liaoning Provincial Meteorological Service Center Shenyang 110016China Climate Change Research Center Institute of Atmospheric Physicsand Nansen-Zhu International

The classification of the Northeast China Cold Vortex(NCCV)activity paths is an important way to analyze its characteristics in *** on the daily precipitation data of the northeastern China(NEC)region,and the atmospheric circulation field and temperature field data of ERA-Interim for every six hours,the NCCV processes during the early summer(June)seasons from 1979 to 2018 were objectively ***,the NCCV processes were classified using a machine learning method(k-means)according to the characteristic parameters of the activity path *** rationality of the classification results was verified from two aspects,as follows:(1)the atmospheric circulation configuration of the NCCV on various paths;and(2)its influences on the climate conditions in the *** obtained results showed that the activity paths of the NCCV could be divided into four types according to such characteristics as the generation origin,movement direction,and movement velocity of the *** included the generation-eastward movement type in the east of the Mongolia Plateau(eastward movement type or type A);generation-southeast longdistance movement type in the upstream of the Lena River(southeast long-distance movement type or type B);generationeastward less-movement type near Lake Baikal(eastward less-movement type or type C);and the generation-southward less-movement type in eastern Siberia(southward less-movement type or type D).There were obvious differences observed in the atmospheric circulation configuration and the climate impact of the NCCV on the four above-mentioned types of paths,which indicated that the classification results were reasonable.

关键词： northeastern China early summer Northeast China Cold Vortex classification of activity paths machine learning method k-means clustering high-pressure blocking

Influence of iron on the severity of hepatic fibrosis in patients with chronic hepatitis C

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World Journal of Gastroenterology 2006年第30期12卷 4897-4901页

作者： Tsung-Jung lin Li-ying Liao Shyr-yi lin Chih-lin lin Ting-An Chang Department of Gastroenterology Ren-Ai Branch Taipei City Hospital TaipeiTaiwan China Graduate Institute of Medical Sciences Taipei Medical University Taipei Taiwan China Department of Pathology Ren-Ai Branch Taipei City Hospital Taipei Taiwan China

AIM： To evaluate the association among hepatic fibrosis, serum iron indices, and hepatic iron stores in patients with Chronic Hepatitis C （CHC）. METHODS： Thirty-two CHC patients were included in our study. The histological degree of fibrosis and inflammation activity was assessed according to the Metavir system. The serum iron indices including ferritin, iron and transferrin saturation were measured. Hepatic iron deposition was graded by Perls＇ stain. RESULTS： The CHC patients with severe hepatic fibrosis （n = 16） were significantly older than CHC patients with mild fibrosis （n = 16）（P = 0.024）. The serum iron indices, increased serum iron store and positive hepatic iron stain were not significantly different between the two groups. In multivariate logistic regression analysis, the age at biopsy was an independent predictor of severe hepatic fibrosis （Odds ratio = 1.312; P = 0.035）. The positive hepatic iron stain was significantly associated with the values of alanine aminotransferase （ALT）（P = 0.017）, ferritin （P = 0.008）, serum iron （P = 0.019） and transferrin saturation （P = 0.003）. The ferritin level showed significant correlation with the value ofALT （r = 0.531; P = 0.003）, iron （r = 0.467; P = 0.011） and transferrin saturation （r = 0.556; P = 0.002）. CONCLUSION： Our findings suggest that the severity of hepatitis C virus （HCV）-related liver injury is associated with patient age at biopsy. Both serum iron indices and hepatic iron deposition show correlation with serum indices of chronic liver disease but are not related to grade and stage of liver histology.

关键词： Chronic hepatitis C Hepatitis C virus Hepatic iron Serum iron Hepatic fibrosis

Comparison of concomitant and subsequent cholangiocarcinomas associated with hepatolithiasis:Clinical implications

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World Journal of Gastroenterology 2013年第3期19卷 375-380页

作者： Chia-Cheng lin Ping-yi lin Yao-Li Chen Department of Surgery Changhua Christian Hospital Transplant Medicine and Surgery Research Centre Changhua Christian Hospital School of Medicine Chung Shan Medical University

AIM:To compare the outcomes of concomitant cholangiocarcinoma(C-CCA)and subsequent cholangiocar-cinoma(S-CCA)associated with hepatolithiasis. METHODS:From December 1987 to December 2007, 276 patients underwent hepatic resection for hepa-tolithiasis in Changhua Christian ***-five patients were excluded due to incomplete medical records and the remaining 211 patients constituted our study population *** patients were diag-nosed with C-CCA based on the preoperative biopsy or postoperative *** the follow-up period, 12 patients developed *** diagnosis of S-CCA was made by image-guided biopsy or by pathology if surgical intervention was carried *** charts were reviewed to collect clinical *** such as CCA incidence,interval from operation to CCA diagnosis,interval from CCA diagnosis to disease-related death,follow-up time,and mortality rate were calculated for both the C-CCA and S-CCA *** outcomes of the C-CCA and S-CCA groups were math-ematically compared and analysed. RESULTS:Our study demonstrates the clinical implications and the survival outcomes of C-CCA and S-CCA. Among the patients with unilateral hepatolithiasis,the incidence rates of C-CCA and S-CCA were fairly similar (4.8%vs 4.5%,respectively,P=0.906).However,for the patients with bilateral hepatolithiasis,the incidence rate of S-CCA(12.2%)was higher than that of C-CCA (4.7%),although the sample size was limited and the difference between two groups was not statistically sig-nificant(P=0.211).The average follow-up time was 56 mo for the C-CCA group and 71 mo for the S-CCA *** to the average time intervals from operation to CCA diagnosis,S-CCA was diagnosed after 67 mo from the initial *** average time intervals from the diagnoses of CCA to disease-related death was 41 mo for the C-CCA group and 4 mo for the S-CCA group,this difference approached statistical sig-nificance(P=0.075).Regarding the rates of overall and disease-

关键词： Hepatolithiasis Intrahepatic duct stones Recurrent pyogenic cholangitis Cholangiocarcinoma Concomitant cholangiocarcinoma Subsequent cholangio-carcinoma

The protective role of tacrine and donepezil in the retina of acetylcholinesterase knockout mice

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International Journal of Ophthalmology(English edition) 2015年第5期8卷 884-890页

作者： Yun-Min yi Li Cai yi Shao Man Xu Jing-lin yi Affiliated Eye Hospital of Nanchang University Jiangxi Research Institute of Ophthalmology and Visual Sciences Department of Ophthalmology the First Affiliated Hospital of Nanchang University

AIM: To determine the effect of different concentrations of the acetylcholinesterase (AChE) inhibitors tacrine and donepezil on retinal protection in AChE(+/-) mice (AChE knockout mice) of various ages. METHODS: Cultured ARPE -19 cells were treated with hydrogen peroxide (H2O2) at concentrations of 0, 250, 500, 1000 and 2000 mu mol/L and protein levels were measured using Western blot. Intraperitoneal injections of tacrine and donepezil (0.1 mg/mL, 0.2 mg/mL and 0.4 mg/mL) were respectively given to AChE4- mice aged 2mo and 4mo and wild-type S129 mice for 7d; phosphate buffered saline (PBS) was administered to the control group. The mice were sacrificed after 30d by cardiac perfusion and retinal samples were taken. AChE(+/-) deficient mice were identified by polymerase chain reaction (PCR) analysis using specific genotyping protocols obtained from the Jackson Laboratory website. H&E staining, immunofluorescence and Western blot were performed to observe AChE protein expression changes in the retinal pigment epithelial (RPE) cell layer. RESULTS: Different concentrations of H2O2 induced AChE expression during RPE cell apoptosis. AChE(+/-) mice retina were thinner than those in wild -type mice (P0.05). CONCLUSION: in viva, tacrine and donepezil can inhibit the expression of AChE; the decrease of AChE expression in the retina is beneficial for the development of the retina.

关键词： retinal pigment epithelium acetylcholinesterase apoptosis AChE(+/-) animal models acetylcholinesterase inhibitors

Control strategy of a novel electric power steering system integrated with active front steering function

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Science China(Technological Sciences) 2011年第6期54卷 1515-1520页

作者： ZHAO WanZhong lin yi WEI JianWei SHI GuoBiao Department of Automotive Engineering Nanjing Universi~ of Aeronautics and Astronautics Nanjing 210016 China School of Mechanical and Vehicular Engineering Beijing Institute of Technology Beijing 100081 China

A novel electric power steering system(EPS) integrated with active front steering(AFS) is *** has functions of both AFS system and EPS system with two actuator units:the AFS actuator unit and the EPS actuator *** AFS actuator unit controls the displacement transfer behavior of the steering system,and improves the handling stability under adverse road conditions by varying the steering ratio directly related to the speed and road *** EPS actuator unit controls the force transfer behavior of the steering system,and improves the steering portability and road feel of the *** on a dynamic model,the mixed H2/H∞ control strategy of the EPS actuator and the active steering intervention control strategy of the AFS actuator are *** simulation indicates that the novel EPS system with the designed control strategies has obvious advantages in vehicle handling stability and the driver's road feel over the traditional EPS system,and extends the vehicle's steering performance.

关键词： vehicle engineering electric power steering active steering control strategy

Risk-minimizing Hedging Strategy for an Equity-indexed Annuity under a Regime Switching Model

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Acta Mathematicae Applicatae Sinica 2015年第1期31卷 101-110页

作者： lin-yi QIAN Wei WANG Rong-ming WANG School of Finance and Statistics East China Normal University Department of Mathematic The University of Ningbo

The equity-indexed annuity （EIA） contract offers a proportional participation in the performance of a specified equity index, in addition to a guaranteed return on the single premium. How to manage the risk of the EIA is an important issue. This paper considers the hedging of the EIA. We assume that the parameters of the financial model depend on a continuous-time finite-state Markov chain and the Markov chain is observed, that is the Markov regime switching model. The state of the Markov chain can be interpreted as the state of an economy. Under the regime switching model~ we obtain the risk-minimizing hedging strategy for the EIA.

关键词： equity-indexed annuity regime switching, risk-minimization

Energy Absorption Characteristics of Single-walled Carbon Nanotubes

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Journal of Wuhan University of Technology(Materials Science) 2013年第2期28卷 249-255页

作者：冷鼎鑫孙凌玉 lin yi School of Transportation Science and Engineering Beihang University

The excellent mechanical properties of carbon nanotubes make them potential candidates for engineering application. In this paper, the impact and failure behaviors of single-walled carbon nanotubes （SWCNTs） are investigated. The effects of diameter, length, and chirality on their energy absorption characteristics under lateral impact and axial crush are studied. By integrating the principle of molecular structural mechanics （MSM） into finite element method （FEM）, the locations and directions of fracture process can be predicted. It is shown that the specific energy absorption （SEA） of SWCNTs is 1-2 order of magnitude higher than that of the ordinary metallic materials and composites in axial impact, indicating that carbon nanotubes are promising energy absorption materials for engineering applications.

关键词： single-walled carbon nanotubes numerical simulation impact behavior energy absorption