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| 1 | SBAS-InSAR技术监测青藏高原季节性冻土形变显示文摘冻土的冻结和融化的反复交替会造成地质环境与结构的破坏,从而导致房屋和道路等地面工程建筑物的地基破裂或者塌陷,还会引起山体滑坡、洪水暴发以及冰川移动等.因此,监测冻土形变对确保冻土区工程建筑的稳定性和安全性,同时保证冻土区社会经济可持续发展具有重要的意义.目前,在冻土监测方面并没有能大面积监测冻土形变时间演化情况的有效方法,本文提出将InSAR技术中的小基线集方法(SBAS-InSAR)应用于监测冻土来获取其形变时间序列中.考虑到冻土形变呈现明显的季节性特征,本文提出利用周期形变模型来代替传统SBAS方法中的线性形变模型,从而更好地分离出高程残差和大气误差.利用ENVISAT卫星获取的21景ASAR影像图作为实验数据,采用改进的SBAS技术成功获取了青藏高原从羊八井站至当雄站铁路段冻土区的地表形变时间序列图,揭示了该冻土区从2007年到2010年的季节性形变演化情况.通过与研究地区温度变化的联合分析,发现所得到的地表形变结果与冻土的物理变化规律非常吻合,证明了SBAS-InSAR技术在冻土形变监测中具有良好的发展应用前景. | 李珊珊 李志伟 胡俊 孙倩 俞晓莹 | 2013 | 地球物理学报2013，56，5： | 97 |
| 2 | 基于短基线集方法(SBAS-INSAR)技术的山区城市地面沉降监测研究——以攀枝花为例显示文摘基于合成孔径雷达干涉(interferometric synthetic aperture radar,INSAR)技术的山区城市地面沉降研究,因地形复杂、植被覆盖等因素开展较少。首次在攀枝花市,利用12景2009-2010ENVISAT ASAR数据,采用短基线集方法开展大范围、长时间监测。结果表明,攀枝花市东区地面沉降较大,沉降的平均速率高达48 mm/年;西区沉降较小,沉降平均速率10 mm/年。推测原因多为城市化建设所致地面荷载;而市东北方向的露天矿区,因连续开采所致,不同时期同一地点的地表变化,导致高相干点在此区域分散稀疏,不能表明是否有沉降现象。 | 孟庆凯 汪宝存 苗放 | 2016 | 科学技术与工程2016，16，13： | 17 |
| 3 | A Two-step Estimation Method of Troposphere Delay with Consideration of Mapping Function Errors显示文摘Mapping function errors are usually not taken into consideration, when space geodetic data observed by VLBI, GNSS and some other techniques are utilized to estimate troposphere delay, which could, however, probably bring non-ignorable errors to solutions. After analyzing the variation of mapping function errors with elevation angles based on several-year meteorological data, this paper constructed a model of this error and then proposed a two-step estimation method of troposphere delay with consideration of mapping function errors. The experimental results indicate that the method put forward by this paper could reduce the slant path delay residuals efficiently and improve the estimation accuracy of wet tropospheric delay to some extent. | Haopeng FAN Zhongmiao SUN Liping ZHANG Xiaogang LIU | 2020 | Journal of Geodesy and Geoinformation Science2020，3，1： | 11 |
| 4 | OBSERVATION AND INVESTIGATION OF VARIABILITIES OF BASELINE CO_2 CONCENTRATION OVER WALIGUAN MOUNTAIN IN QINGHAI PROVINCE OF CHINA显示文摘In-situ measurement of atmospheric CO2 was made at the top of the Waliguan Mountain(36°17′N,100°54′E,3816m asl).where the air is not directly affected by the local anthropogenic and natural sources,by using a nondispersiveinfrared(NDIR)analyzer and following the procedures proposed by WMO.The CO2 in the flask samples collected onthe mountain was also analyzed in a laboratory.The measurements uncover the daily,monthly and seasonal variabilitiesand the baseline level of the CO2 in the air over the“clean”area of Chinese hinterland.Results suggest that theCO2 concentration over the East Asia continent has evident periodical variation,similar to that of global distribution.In1992,an annual mean baseline CO2 concentration of 356.4 ppm over the continent was obtained.The annual mean val-ue was 357.2 ppm for 1993.Some relationships between the CO2 concentration at Waliguan and the weather conditions,especially,wind speed and direction are found through the observation. | 温玉璞 邵志清 徐晓斌 季秉法 朱庆斌 | 1994 | Acta meteorologica Sinica1994，8，3： | 7 |
| 5 | Design,methodology,and baseline of whole city‑million scale children and adolescents myopia survey(CAMS)in Wenzhou,China显示文摘Background:Myopia is the most common visual impairment in children and adolescents worldwide.This study described an economical and effective population-based screening pipeline and performed the project of a million scale children and adolescents myopia survey(CAMS),which will shed light on the further study of myopia from the level of epidemiology and precision medicine.Methods:We developed a novel population-based screening pattern,an intelligent screening process and internetbased information transmission and analysis system to carry out the survey consisting of school children in Wenzhou,China.The examination items include unaided distance visual acuity,presenting distance visual acuity,and noncycloplegic autorefraction.Myopia and high myopia were defined as spherical equivalent(SE)≤−1.00 diopters(D)and SE≤−6.00 D,respectively.Next,the reports of the vision checking were automatically sent to parents and the related departments.The CAMS project will be done two to four times annually with the support of the government.An online eyesight status information management system(OESIMS)was developed to construct comprehensive and efficient electronic vision health records(EVHRs)for myopia information inquiry,risk pre-warning,and further study.Results:The CAMS completed the first-round of screening within 30 days for 99.41%of Wenzhou students from districts and counties,in June 2019.A total of 1,060,925 participants were eligible for CAMS and 1,054,251(99.37%participation rate)were selected through data quality control,which comprised 1305 schools,and 580,609,251,050 and 170,967 elementary,middle,and high school students.The mean age of participants was 12.21±3.32 years(6-20 years),the female-to-male ratio was 0.82.The prevalence of myopia in elementary,middle,and high school students was 38.16%,77.52%,and 84.00%,respectively,and the high myopia incidence was 0.95%,6.90%,and 12.98%.Conclusions:The CAMS standardized myopia screening model involves automating large-scale information collection,data transmission,data analysis and early warning,thereby supporting myopia prevention and control.The entire survey reduced 90%of staff,cost,and time consumption compared with previous surveys.This will provide new insights for decision support for public health intervention. | Liangde Xu Youyuan Zhuang Guosi Zhang Yunlong Ma Jian Yuan Changseng Tu MiaoMiao Li Wencan Wang Yaru Zhang Xiaoyan Lu Jing Li Xinting Liu Zhengbo Xue Meng Zhou Jie Sun Jinhua Bao Ming Li Fan Lu Hong Wang Jianzhong Su Jia Qu | 2021 | Eye and Vision2021，8，1： | 7 |
| 6 | Design and baseline data of a populationbased metabonomics study of eye diseases in eastern China: the Yueqing Ocular Diseases Investigation显示文摘Background:China is undergoing a massive transition toward an urban and industrial economy.These changes will restructure the demographics and economy which will eventually influence the future patterns of disease.The risk factors of vision-impairing eye diseases remain ambiguous and poorly understood.Metabolomics is an ideal tool to understand and shed light on the ocular disease mechanisms for earlier treatment.This article aims to describe the design,methodology and baseline data of the Yueqing Ocular Diseases Investigation(YODI),a developed county population-based study to determine the prevalence and primary causes of visual impairment;also with metabonomics analysis we aimed to identify,predict and suggest some preventive biomarkers that cause blindness.Methods:A population-based,cross-sectional study.Randomized clustering sampling was used to identify adults aged 50 years and older in Xiangyang Town,Yueqing county-level City.The interviews covered demographic,behavioral,ocular risk factors and mental health state.The ocular examination included visual acuity,autorefraction,intraocular pressure,anterior and posterior segment examinations,fundus photography,retinal tomography and angiography,and visual field testing.Anthropometric measurements included height and weight,waist and hip circumference,blood pressure,pulse rate,electrocardiogram,and abdominal ultrasound scan.A venous blood sample was collected for laboratory tests and metabonomics studies.Results:Of the 5319 individuals recruited for the YODI,4769(89.7%)subjects were enrolled for analyses.The median age was 62.0 years,and 45.6%were male.The educational level of illiteracy or semi-illiteracy,primary,middle and high school or above was 29.8%,45.5%,20.1%,and 3.3%,respectively.Majority of the participants were female,younger,and less educated when compared with nonparticipants.The average body mass index and waist-hip ratios were 24.4±3.4 kg/m^(2) and 0.9±0.1 respectively.Blood sample collection reached a sample size of 1909(479 from subjects with selfreported diabetes and 1430 from one-third of the 4290 subjects without self-reported diabetes).Conclusions:The YODI provides population-based data with a high response rate(89.7%)on the prevalence and primary causes of major vision-impairing eye diseases in developed county areas in eastern China.Metabonomics analysis from YODI will provide further association of metabolic characteristics with the visual impairment eye diseases.The risk prediction model could be created and has the potential to be generalized to developed eastern areas in China for prevention. | Yuxuan Deng Yuanbo Liang Sigeng Lin Liang Wen Jin Li Yue Zhou Meixiao Shen Jingwei Zheng Kemi Feng Yanting Sun Kwapong Willaim Robert Jia Qu Fan Lu | 2020 | Eye and Vision2020，7，1： | 4 |
| 7 | Infrared-transmission spectra and hydrogen content of hydrogenated amorphous silicon显示文摘In this paper, two kinds of methods of calculating the hydrogen content of a-Si:H thin film by means of the wagging mode and the stretching modes of infrared-transmission spectra , are investigated. The reason for the difference in these two calculation results is analyzed. If the contents of SiH2 and (SiH2)n are indicated in terms of a structure factor F=(I840+I880)/I2000, it is shown that the calculation results obtained from the two different methods are almost equal when the refractive index n is approximately 3.4 or the fitting thickness is between 0.71 and 0.89 mm in the case of a small F. It is shown that the ways of fabrication of thin film can influence silicon-hydrogen bonding configuration of a-Si:H film, and different ways of fabrication can lead to different contents of SiH2 and (SiH2)n. The uniformity of the thin film with a big F is bad. In this case, there is great difference between the thickness measured by the SurfCom408A surface profile apparatus and the thickness obtained by fitting the fringes; and the hydrogen contents of a-Si:H films obtained by means of the wagging mode and the stretching modes are different, too. But the fabrication of the MWECR CVD assisted by CAT CVD can effectively restrain the formation of SiH2 and (SiH2)n. | HU Yuehui CHEN Guanghua WU Yueying YIN Shengyi GAO Zhuo WANG Qing SONG Xuemei DENG Jinxiang | 2004 | Science China(Physics,Mechanics & Astronomy)2004，47，3： | 3 |
| 8 | Long-term Trends and Predictors of Smoking Behaviors among Men Following First-ever Ischemic Stroke显示文摘Continued smoking following stroke is associated with adverse outcomes including increased risk of mortality and secondary stroke. The aim of this study was to examine the long-term trends in smoking behaviors and factors associated with smoking relapse among men who survived their first-ever stroke. Data collection for this longitudinal study was conducted at baseline through face-toface interviews and follow-up was completed every 3 months via telephone, beginning in 2010 and continuing through 2014. Cox proportional hazard regression models were used to identify predictors of smoking relapse behavior. At baseline, 372 male patients were recruited into the study. Totally, 155(41.7%) of these patients stopped smoking for stroke, and 61(39.3%) began smoking again within 57 months after discharge with an increasing trend in the number of cigarettes smoked per day. Exposure to environmental tobacco smoke at places outside of home and work(such as bars, restaurants)(HR, 2.34; 95% CI, 1.04–5.29, P=0.04), not having a spouse(HR, 0.12; 95% CI, 0.04–0.36; P=0.0002) and smoking at least 20 cigarettes per day before stroke(HR, 2.42; 95% CI, 1.14–5.14, P=0.02) were predictors of smoking relapse. It was concluded that environmental tobacco smoke is an important determinant of smoking relapse among men who survive their first stroke. Environmental tobacco smoke should be addressed by smoke-free policies in public places. | 侯利莎 杜旭东 李吉杰 朱萍 闫沛静 詹凤羽 周沐科 朱彩蓉 | 2017 | Journal of Huazhong University of Science and Technology(Medical Sciences)2017，37，3： | 3 |
| 9 | 基于Baseline SVD主动学习算法的推荐系统显示文摘推荐系统是一种解决信息过载的新型技术,为了解决推荐系统中新用户带来的冷启动问题,提出一种基于主动学习的推荐系统。主动学习方法能有效减少需要标记的样本数量,快速建立模型,在此选择将主动学习方法和Baseline SVD推荐算法结合起来,通过记录模型训练得到的预估评价的改变程度,认为改变最大的样例即是最具有信息量的样例,供新用户标记,并重新训练模型。通过与其他选择策略进行实验比较,证实了该方法确实有效解决了新用户带来的冷启动问题。 | 季芸 胡雪蕾 | 2015 | 现代电子技术2015，38，12： | 3 |
| 10 | 基于氧气A吸收带的baseline拟合距离反演算法显示文摘目标红外被动测距的实现同气体及其波段的选取密切相关。氧气A吸收带具有独特的谱线结构,对于火箭羽流或者高温辐射体的距离探测,氧气A吸收带是最佳的距离反演通道。利用该特点,详细研究了逐线积分算法(LBLRTM),并设计了氧气A带吸收系数及标准光谱计算软件;利用A吸收带吸收光谱带外数据,采用多项式拟合方法,实现基线(baseline)拟合,进而得到带平均透过率;在不同的距离条件下,将两种带平均透过率进行对比,误差在1.9%左右,拟合精度较高,该方法为后续距离的精确反演提供了理论依据。 | 宗鹏飞 王志斌 陈媛媛 陈友华 | 2013 | 光散射学报2013，25，1： | 3 |
| 11 | A cohort study on the relationship between cerebrovascular hemodynamic changing and risk of strok显示文摘Objective To study the role of cerebrovascular hemodynamic indexes(CVHI)changing in stroke and to provide reference for stroke prevention and risk factor study.Methods From 2003 to 2004,participants aged 40 | 郭吉平 | 2013 | China Medical Abstracts(Internal Medicine)2013，30，2： | 2 |
| 12 | Corrections to the IAU 1976 precession constant and the coefficients of the IAU 1980 nutation series from VLBI observations显示文摘In the aspect of examination by observations and based on a longer data span and improved precision of very_long baseline interferometry observations, the corrections to the IAU 1976 precession constant and the coefficients of IAU 1980 nutation series are solved. The corrections to coefficients of long periodic terms, the detection of the retrograde free core nutation, and the possible relation between the corrections to coefficients of the prograde annual term and the enviromental temperature are also briefly discussed. | Li Jinling Wang Guangli | 1998 | Chinese Science Bulletin1998，43，12： | 2 |
| 13 | Factors associated with early virological response to peginterferon-α-2a/ribavirin in chronic hepatitis C显示文摘AIM: To evaluate the impact of sociodemographic/clinical factors on early virological response (EVR) to pegin-terferon/ribavirin for chronic hepatitis C (CHC) in clinical practice. METHODS: We conducted a multicenter, cross-sectional, observational study in Hepatology Units of 91 Spanish hospitals. CHC patients treated with peginterferon α-2a plus ribavirin were included. EVR was defined as undetectable hepatitis C virus (HCV)-ribonucleic acid (RNA) or ≥ 2 log HCV-RNA decrease after 12 wk of treatment. A bivariate analysis of sociodemographic and clinical variables associated with EVR was carried out. Independent factors associated with an EVR were analyzed using a multiple regression analysis that included the following baseline demographic and clinical variables: age (≤ 40 years vs > 40 years), gender, race, educational level, marital status and family status, weight, alcohol and tobacco consumption, source of HCV infection, alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels, and gamma glutamyl transpeptidase (GGT) (≤ 85 IU/mL vs > 85 IU/mL), serum ferritin, serum HCV-RNA concentration (< 400 000 vs ≥ 400 000), genotype (1/4 vs 3/4), cirrhotic status and ribavirin dose (800/1000/1200 mg/d).RESULTS: A total of 1014 patients were included in the study. Mean age of the patients was 44.3 ± 9.8 years, 70% were male, and 97% were Caucasian. The main sources of HCV infection were intravenous drug abuse (25%) and blood transfusion (23%). Seventyeight percent were infected with HCV genotype 1/4 (68% had genotype 1) and 22% with genotypes 2/3. The HCV-RNA level was > 400 000 IU/mL in 74% of patients. The mean ALT and AST levels were 88.4 ± 69.7 IU/mL and 73.9 ± 64.4 IU/mL, respectively, and mean GGT level was 82 ± 91.6 IU/mL. The mean ferritin level was 266 ± 284.8 μg/L. Only 6.2% of patients presented with cirrhosis. All patients received 180 mg of peginterferon α-2a. The most frequently used ribavirin doses were 1000 mg/d (41%) and 1200 mg/d (41%). The planned treatment duration was 48 wk for 92% of patients with genotype 2/3 and 24 wk for 97% of those with genotype 1/4 (P < 0.001). Seven percent of patients experienced at least one reduction in ribavirin or peginterferon α-2a dose, respectively. Only 2% of patients required a dose reduction of both drugs. Treatment was continued until week 12 in 99% of patients. Treatment compliance was ≥ 80% in 98% of patients. EVR was achieved in 87% of cases (96% vs 83% of patients with genotype 2/3 and 1/4, respectively; P < 0.001). The bivariate analysis showed that patients who failed to achieve EVR were older (P < 0.005), had higher ALT (P < 0.05), AST (P < 0.05), GGT (P < 0.001) and ferritin levels (P < 0.001), a diagnosis of cirrhosis (P < 0.001), and a higher baseline viral load (P < 0.05) than patients reaching an EVR. Age < 40 years [odds ratios (OR): 0.543, 95%CI: 0.373-0.790, P < 0.01], GGT < 85 IU/mL (OR: 3.301, 95%CI: 0.192-0.471, P < 0.001), low ferritin levels (OR: 0.999, 95%CI: 0.998-0.999, P < 0.01) and genotype other than 1/4 (OR: 4.716, 95%CI: 2.010-11.063, P < 0.001) were identified as independent predictors for EVR in the multivariate analysis. CONCLUSION: CHC patients treated with peginterferon-α-2a/ribavirin in clinical practice show high EVR. Older age, genotype 1/4, and high GGT were associated with lack of EVR. | Javier García-Samaniego Miriam Romero Rafael Granados Remedios Alemán Miguel Jorge Juan Dolores Suárez Ramón Pérez Gregorio Castellano Carlos González-Portela | 2013 | World Journal of Gastroenterology2013，19，12： | 2 |
| 14 | Spatial distribution modeling of temperature increase for the uplifted mountain terrains and its characteristics in Southwest China显示文摘Local temperature changes in mountain areas are significantly affected by the uplifted mountain terrains. Understanding how temperature increase with mountain terrains is an important component in accurately modeling the spatial distribution of temperature. The study, after minimizing the effect of elevation and latitude, quantitatively simulated the temperature increase in the uplifted mountain terrains, described the characteristics in the spatial distribution of warming areas with different magnitudes, and identified the correlated indices of mountain bodies for warming. Selecting Yunnan Province in southwest China as the study area, we simulated the warming field on a baseline surface at the average elevation of 2000 m and average latitude of 24.96°. The results indicated that the warming magnitudes in different local areas varied with the change in the spatial locations, and the warming process concentrated in the mountainous regions. Throughout the entire study area, the warming field presented a general pattern of three terraces from the regions of high mountains to middle mountains and then low mountains. The areasof high warming magnitude mainly surrounded large mountain bodies and were distributed on the upper part. The areas of low warming magnitude clustered in the valleys and basins of the middle mountain region, mostly on the lower part of the large mountain bodies and its branches. The areas with zero warming magnitude occurred in the low mountains and broad valleys, which were distributed largely on the lower parts of the middle mountains and in most of the valleys. Quantified sampling analysis demonstrated good positive correlation between the warming magnitudes in uplifted mountain terrains and the volume index of the mountain body, as well as elevation difference, with the coefficients corresponding to 0.82 and 0.91, respectively. | WANG Yan-xia DING Kun LI Mao-biao ZHOU Ru-liang | 2017 | Journal of Mountain Science2017，14，11： | 2 |
| 15 | Effects of clozapine and haloperidol on body weight,neuropeptide Y and leptin in patients with schizophrenia显示文摘Objective To investigate the changes of neuropeptide Y(NPY) ,leptin,body weight and their relationship in schizophrenics with clozapine and haloperidol treatment. Methods Thirty schizophrenic patients | 宋梓祥 | 2013 | China Medical Abstracts(Internal Medicine)2013，30，1： | 1 |
| 16 | 112 CASES OF JUVENILE MYOPIA TREATED BY AURICULAR ACUPRESSURE显示文摘The author has treated 112 myopes (221eyes) in the Youyang County Hospital outpatientdepartment since March,1984.All cases wereobserved clinically for more than 6 months withrather satisfactory effects.Here is the report. | 陈茂长 | 1989 | Journal of Traditional Chinese Medicine1989，9，3： | 1 |
| 17 | Baseline JPEG压缩器在Xilinx FPGA上的设计与实现显示文摘由于近年来胶囊内窥镜需求的发展,以及FPGA在小型化和低功耗的技术进步,在内窥镜系统中应用FPGA为核心的解决方案已经成为可能。在目前的FPGA数字胶囊系统,以及未来用于胶囊窥镜的专用集成电路中,图像数据压缩都是重要组成部分。本文使用Verilog对普遍应用的Baseline JPEG压缩核进行封装并在FPGA进行实现和验证,并给出了电路设计和测试结果。在Xilinx Spartan LX9 FPGA上,所实现的Baseline JPEG压缩器达到最高166 MHz的时钟频率。 | 赵恒阳 刘华 | 2014 | 电子设计工程2014，22，20： | 1 |
| 18 | 基于一阶段目标检测网络头部算法研究显示文摘目标检测的网络框架对目标检测结果影响极大,其中网络头部的研究是网络框架改进的重点之一。本文针对一阶段目标检测的网络头部进行改进。通过对当前两阶段网络头部的研究与一阶段网络框架RetinaNet头部热力图的输出进行分析,在一阶段网络头部创新性地引入池化层模块、提出双分类头模块、使用2个网络头部权重自适应分配结合的方法。本文使用RetinaNet作为baseline、VOC0712和MS COCO2017数据集作为实验数据集,最终在VOC0712上mAP达到了80.8%,相比于baseline提高了3.5%,在MS COCO2017测试集上mAP达到了40.2%,相比于RetinaNet提高了1.1%,使用多尺度后mAP达到了41.7%,提高了2.4%。 | 肖贵明 丁德锐 梁伟 魏国亮 | 2022 | 智能计算机与应用2022，12，11： | 1 |
| 19 | Calibration of GPS receivers based on IGS and CORS techniques显示文摘Concerning the traditional methods,more technical details and more strict conditions are required for global positioning system(GPS)receiver’s calibration especially for mid and long baseline which influenced by the environment around easily,and more investigations have to be done.In this paper,a new method on how to calibrate GPS receivers is suggested,which is based on the convenient condition that Kunming has one international GPS service station and its own continuously operating reference stations,and the method is confirmed by a test using six different types of GPS receivers.Compared with the traditional methods,the new method is more efficient by decreasing routine calibration works up to 50%. | SHI Kun QIU Yunfeng ZHAO Biyun NIE Jin CHEN Yuhan | 2012 | Geo-Spatial Information Science2012，15，3： | 1 |
| 20 | Long-term follow-up study of moderate chronic obstructive pulmonary disease in elderly patients显示文摘Objective To investigate the prognosis of moderate chronic obstructive pulmonary disease (COPD) in the elderly patients, and to evaluate the factors for long term survival. Methods From May 1993,a prospective cohort study was carried out,in which 191 elderly patients with moderate COPD were recruited in Shougang communities, Shijingshan District, Beijing. The general | 向平超 | 2006 | China Medical Abstracts(Internal Medicine)2006，23，4： | 0 |
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