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38篇 您的检索式:作者名="Shen Yuming"
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12018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents显示文摘Syncope belongs to the transient loss of consciousness(TLOC), characterized by a rapid onset, short duration, and spontaneous complete recovery. It is common in children and adolescents, accounting for 1% to 2% of emergency department visits.Recurrent syncope can seriously affect children's physical and mental health, learning ability and quality of life and sometimes cardiac syncope even poses a risk of sudden death. The present guideline for the diagnosis and treatment of syncope in children and adolescents was developed for guiding a better clinical management of pediatric syncope. Based on the globally recent development and the evidence-based data in China, 2018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents was jointly prepared by the Pediatric Cardiology Society, Chinese Pediatric Society, Chinese Medical Association(CMA)/Committee on Pediatric Syncope, Pediatricians Branch, Chinese Medical Doctor Association(CMDA)/Committee on Pediatric Cardiology, Chinese College of Cardiovascular Physicians, Chinese Medical Doctor Association(CMDA)/Pediatric Cardiology Society, Beijing Pediatric Society, Beijing Medical Association(BMA). The present guideline includes the underlying diseases of syncope in children and adolescents, the diagnostic procedures, methodology and clinical significance of standing test and headup tilt test, the clinical diagnosis vasovagal syncope, postural orthostatic tachycardia syndrome, orthostatic hypotension and orthostatic hypertension, and the treatment of syncope as well as follow-up.Cheng Wang Yaqi Li Ying Liao Hong Tian Min Huang Xiangyu Dong Lin Shi Jinghui Sun Hongfang Jin Junbao Du Jindou An Jie Chen Mingwu Chen Qi Chen Sun Chen Yonghong Chen Zhi Chen Adolphus Kai-tung Chau Junbao Du Zhongdong Du Junkai Duan Hongyu Duan Xiangyu Dong Lin Feng Lijun Fu Fangqi Gong Yonghao Gui Ling Han Zhenhui Han Bing He Zhixu He Xiufen Hu Yimin Hua Guoying Huang Min Huang Ping Huang Yujuan Huang Hongfang Jin Mei Jin Bo Li Fen Li Tao Li Xiaohui Li Xiaoyan Liu Yan Li Haitao Lv Tiewei Lv Zipu Li Luyi Ma Silin Pan Yusheng Pang Hua Peng Yuming Qin Jie Shen Lin Shi Kun Sun Jinghui Sun Hong Tian Jie Tian Cheng Wang Hong Wang Lei Wang Jinju Wang Wendi Wang Yuli Wang Rongzhou Wu Tianhe Xia Yanyan Xiao Chunhong Xie Yanlin Xing Zhenyu Xiong Baoyuan Xu Yi Xu Hui Yan Shiwei Yang Qijian Yi Xia Yu Xianyi Yu Yue Yuan Hongyan Zhang Huili Zhang Li Zhang Qingyou Zhang Xi Zhang Yanmin Zhang Zhiwei Zhang Cuifen Zhao Bin Zhou Hua Zhu 2018Science Bulletin2018,63,23:54
2Landscape of DILI-related adverse drug reaction in China Mainland显示文摘Drug-induced liver injury(DILI)is a type of bizarre adverse drug reaction(ADR)damaging liver(L-ADR)which may lead to substantial hospitalizations and mortality.Due to the general low incidence,detection of L-ADR remains an unsolved public health challenge.Therefore,we used the data of 6.673 million of ADR reports from January 1st,2012 to December 31st,2016 in China National ADR Monitoring System to establish a new database of L-ADR reports for future investigation.Results showed that totally 114,357 ADR reports were retrieved by keywords searching of liver-related injuries from the original heterogeneous system.By cleaning and standardizing the data fields by the dictionary of synonyms and English translation,we resulted 94,593 ADR records reported to liver injury and then created a new database ready for computer mining.The reporting status of L-ADR showed a persistent 1.62-fold change over the past five years.The national population-adjusted reporting numbers of L-ADR manifested an upward trend with age increasing and more evident in men.The annual reporting rate of L-ADR in age group over 80 years old strikingly exceeded the annual DILI incidence rate in general population,despite known underreporting situation in spontaneous ADR reporting system.The percentage of herbal and traditional medicines(H/TM)L-ADR reports in the whole number was 4.5%,while 80.60%of the H/TM reports were new findings.There was great geographical disparity of reported agents,i.e.more cardiovascular and antineoplastic agents were reported in higher socio-demographic index(SDI)regions and more antimicrobials,especially antitubercular agents,were reported in lower SDI regions.In conclusion,this study presented a large-scale,unbiased,unified,and computer-minable L-ADR database for further investigation.Age-,sex-and SDI-related risks of L-ADR incidence warrant to emphasize the precise pharmacovigilance policies within China or other regions in the world.Jiabo Wang Haibo Song Feilin Ge Peng Xiong Jing Jing Tingting He Yuming Guo Zhuo Shi Chao Zhou Zixin Han Yanzhong Han Ming Niu Zhaofang Bai Guangbin Luo Chuanyong Shen Xiaohe Xiao 2022Acta Pharmaceutica Sinica B2022,12,12:12
3Basic Characteristics,Spatial Disparity and Its Major Influencing Factors of Service Industry in China显示文摘Based on the analysis of its basic characteristics,this article investigated the disparities of Chinese service industry among the three regions(the eastern China,the western China and the middle China) and inter-provincial disparities of that in the three regions by Theil coefficient and cluster analysis.Then,major factors influencing its spatial disparity were explored by correlation analysis and regression analysis.The conclusions could be drawn as follows.1) The development of Chinese service industry experienced three phases since the 1980s:rapid growth period,slow growth period,and recovery period.From the proportion of value-added and employment,its development was obviously on the low level.From the composition of industrial structure,traditional service sectors were dominant,but modern service sectors were lagged.Moreover,its spatial disparity was distinct.2) The level of Chinese service industry was divided into five basic regional ranks:well-developed,developed,relatively-developed,underdeveloped and undevel-oped regions.As a whole,the overall structure of spatial disparity was steady in 1990-2005.But there was notable gradient disparity in the interior structure of service industry among different provinces.Furthermore,the overall disparity expanded rapidly in 1990-2005.The inter-provincial disparity of service industry in the three regions,especially in the eastern China,was bigger than the disparity among the three regions.And 3) the level of economic development,the level of urban development,the scale of market capacity,the level of transportation and telecommunication,and the abundance of human resources were major factors influencing the development of Chinese service industry.SHEN Yuming QIU Ling REN Wangbing CAO Yi HU Dan SONG Yujing 2009Chinese Geographical Science2009,19,4:6
4Base-free aerobic oxidation of glycerol on TiO_2-supported bimetallic Au–Pt catalysts显示文摘The aerobic oxidation of glycerol provides an economically viable route to glyceraldehyde, dihydroxyacetone and glyceric acid with versatile applications, for which monometallic Pt, Au and Pd and bimetallic Au–Pt, Au–Pd and Pt–Pd catalysts on Ti O2 were examined under base-free conditions. Pt exhibited a superior activity relative to Pd, and Au–Pd and Pt–Pd while Au was essentially inactive. The presence of Au on the Au–Pt/Ti O2 catalysts led to their higher activities(normalized per Pt atom) in a wide range of Au/Pt atomic ratios(i.e.1/3–7/1), and the one with the Au/Pt ratio of 3/1 exhibited the highest activity. Such promoting effect is ascribed to the increased electron density on Pt via the electron transfer from Au to Pt, as characterized by the temperature-programmed desorption of CO and infra-red spectroscopy for CO adsorption. Meanwhile,the presence of Au on Au–Pt/Ti O2, most like due to the observed electron transfer, changed the product selectivity, and facilitated the oxidation of the secondary hydroxyl groups in glycerol, leading to the favorable formation of dihydroxyacetone over glyceraldehyde and glyceric acid that were derived from the oxidation of the primary hydroxyl groups. The synergetic effect between Au and Pt demonstrates the feasibility in the efficient oxidation of glycerol to the targeted products, for example, by rational tuning of the electronic properties of metal catalysts.Yihong Shen Yuming Li Haichao Liu 2015Journal of Energy Chemistry2015,24,5:5
5Concept of the solar ring mission:An overview显示文摘The concept of the Solar Ring mission was gradually formed from L5/L4 mission concept, and the proposal of its pre-phase study was funded by the National Natural Science Foundation of China in November 2018 and then by the Strategic Priority Program of Chinese Academy of Sciences in space sciences in May 2019. Solar Ring mission will be the first attempt to routinely monitor and study the Sun and inner heliosphere from a full 360-degree perspective in the ecliptic plane. The current preliminary design of the Solar Ring mission is to deploy six spacecraft, grouped in three pairs, on a sub-AU orbit around the Sun. The two spacecraft in each group are separated by about 30?and every two groups by about 120?. This configuration with necessary science payloads will allow us to establish three unprecedented capabilities:(1) determine the photospheric vector magnetic field with unambiguity,(2) provide 360-degree maps of the Sun and the inner heliosphere routinely, and(3) resolve the solar wind structures at multiple scales and multiple longitudes. With these capabilities, the Solar Ring mission aims to address the origin of solar cycle, the origin of solar eruptions, the origin of solar wind structures and the origin of severe space weather events. The successful accomplishment of the mission will advance our understanding of the star and the space environment that hold our life and enhance our capability of expanding the next new territory of human.WANG YuMing JI HaiSheng WANG YaMin XIA LiDong SHEN ChengLong GUO JingNan ZHANG QuanHao HUANG ZhengHua LIU Kai LI XiaoLei LIU Rui WANG JingXiu WANG Shui 2020Science China(Technological Sciences)2020,63,9:4
6Non-thermal plasma treatment of Radix aconiti wastewater generated by traditional Chinese medicine processing显示文摘The wastewater effluent from Radix aconiti processing, an important step in the production processes of traditional Chinese medicine(TCM), is a type of toxic wastewater and difficult to treat. Plasma oxidation methods have emerged as feasible techniques for effective decomposition of toxic organic pollutants. This study examined the performance of a plasma reactor operated in a dielectric barrier discharge(DBD) to degrade the effluent from R. aconiti processing. The effects of treatment time, discharge voltage, initial p H value and the feeding gas for the reactor on the degradation of this TCM wastewater were investigated. A bacterium bioluminescence assay was adopted in this study to test the toxicity of the TCM wastewater after non-thermal plasma treatment. The degradation ratio of the main toxic component was 87.77% after 60 min treatment with oxygen used as feed gas and it was 99.59% when the initial p H value was 8.0. High discharge voltage and alkaline solution environment were beneficial for improving the degradation ratio. The treatment process was found to be capable of reducing the toxicity of the wastewater to a low level or even render it non-toxic. These experimental results suggested that the DBD plasma method may be a competitive technology for primary decomposition of biologically undegradable toxic organic pollutants in TCM wastewater.Yiyong Wen Jianping Yi Shen Zhao Song Jiang Yuming Chi Kefu Liu 2016Journal of Environmental Sciences2016,28,6:4
7Ge nanoparticles uniformly immobilized on 3D interconnected porous graphene frameworks as anodes for high-performance lithium-ion batteries显示文摘Germanium(Ge), an alloy-type anode material for lithium-ion batteries(LIBs), possesses many advantages such as high theoretical capacity and decent electrical conductivity. Nevertheless, its application is restricted by tremendous volume variation and tardy reaction kinetic during discharge/charge process.In this paper, the Ge/3DPG composites with Ge nanoparticles uniformly dispersed in 3D interconnected porous graphene(3DPG) skeleton are successfully prepared using a template-assisted in-situ reduction method. The unique 3D interconnected porous graphene can not only enhance the electronic conductivity and reaction kinetics of the materials, but also provide sufficient buffer space to effectively mitigate the volume expansion during cycling and strengthen the structural integrity. Moreover, the small-sized Ge nanoparticles in close conjunction with the 3D graphene can boost the surface-controlled reaction of the electrode, which contributes to a fast charge–discharge rate capability. The Ge/3DPG composite with optimized Ge/graphene mass ratio delivers high reversible specific capacity(1102 mAh g^(-1) after 100 cycles at 0.2 C), outstanding rate capability(494 mAh g^(-1) at 5 C), and admirable cycling stability(85.3% of capacity retention after 250 cycles at 0.5 C). This work provides a significant inspiration for the design and fabrication of advanced Ge-based anode materials for next-generation highperformance LIBs.Yao Chen Yuming Zou Xiaoping Shen Jingxia Qiu Jiabiao Lian Jinrui Pu Sheng Li Fei-Hu Du Shang-Qi Li Zhenyuan Ji Aihua Yuan 2022Journal of Energy Chemistry2022,31,6:3
8Satisfiability and reasoning mechanism of terminological cycles in description logic vL显示文摘The current research works and the existing problems of terminological cycles in description logics are analyzed in this paper. Referring to the works of Baader F and Nebel B,we aim in a new direction. Firstly,description logic νL is defined,and the description graphs GT and GJ are redefined. A syntax condition for the satisfiability of membership relation is given. By using this syntax condition,we prove the following:The subsumption reasoning in νL with respect to gfp-model,lfp-model and descriptive model is polynomial.WANG Ju JIANG YunCheng SHEN YuMing 2008Science in China(Series F)2008,51,9:3
9Prognostic value of systemic immune- inflammation index in acute/subacute patients with cerebral venous sinus thrombosis显示文摘Objective To evaluate the prognosis values of systemic immune-inflammation index(SII)in non-chronic cerebral venous sinus thrombosis(CVST).Methods patients with CVST,admitted to the First Affiliated Hospital of Zhengzhou University,were retrospectively identified from January 2013 to December 2018.We selected patients in acute/subacute phase from database.Functional outcomes of patients were evaluated with the modified Rankin Scale(mRS)-mRS 3-6 as poor outcomes and mRS 6 as death.The overall survival time was defined as the date of onset to the date of death or last follow-up date.Survival analysis was described by the Kaplan-Meier curve and Cox regression analysis.Multivariate logistic regression analysis assessed the relationship between SII and poor functional outcome.The area under the Receiver Operating Curve curve(AUC)was estimated to evaluate the ability of SII in prediction.Results A total of 270 patients were included and their duration of follow-up was 22 months(6-66 months),of whom 31 patients had poor outcomes and 24 patients dead.Cox regression analysis showed that SII(HR=1.304,95%CI:1.101 to 1.703,p=0.001)was a predictor of death in non-chronic CVST.Patients with higher SII presented lower survival rates(p=0.003).The AUC of SII was 0.792(95%CI:0.695 to 0.888,p=0.040)with a sensitivity of 69.6%and specificity of 80.1%.Subgroups analysis demonstrated that SII was an important predictor of poor outcomes in male(OR=1.303,95%CI:1.102 to 1.501,p=0.011)and pregnancy/puerperium female(OR=1.407,95%CI:1.204 to 1.703,p=0.034).Conclusions SII was a potential predictor in the poor prognosis of patients with acute/subacute CVST,especially in male and pregnancy/puerperium female.Shen Li Kai Liu Yuan Gao Lu Zhao Rui Zhang Hui Fang Yongli Tao Hongbing Liu Jiawei Zhao Zongping Xia Yuming Xu Bo Song 2020Stroke & Vascular Neurology2020,5,4:3
10Overview of the Solar Polar Orbit Telescope Project for Space Weather Mission显示文摘The Solar Polar ORbit Telescope(SPORT) project for space weather mission has been under intensive scientific and engineering background studies since it was incorporated into the Chinese Space Science Strategic Pioneer Project in 2011.SPORT is designed to carry a suite of remote-sensing and in-situ instruments to observe Coronal Mass Ejections(CMEs),energetic particles,solar high-latitude magnetism,and the fast solar wind from a polar orbit around the Sun.The first extended view of the polar regions of the Sun and the ecliptic enabled by SPORT will provide a unique opportunity to study CME propagation through the inner heliosphere,and the solar high-latitude magnetism giving rise to eruptions and the fast solar wind.Coordinated observations between SPORT and other spaceborne/ground-based facilities within the International Living With a Star(ILWS) framework can significantly enhance scientific output.SPORT is now competing for official selection and implementation during China's 13 th Five-Year Plan period of 2016-2020.XIONG Ming LIU Ying LIU Hao LI Baoquan ZHENG Jianhua ZHANG Cheng XIA Lidong ZHANG Hongxin RAO Wei CHEN Changya SUN Weiying WU Xia DENG Yuanyong HE Han JIANG Bo WANG Yuming WANG Chuanbing SHEN Chenglong ZHANG Haiying ZHANG Shenyi YANG Xuan SANG Peng WU Ji 2016空间科学学报2016,36,3:3
11Effectiveness of intravenous r- tPA versus UK for acute ischaemic stroke: a nationwide prospective Chinese registry study显示文摘Background Intravenous recombinant tissue plasminogen activator(r-tPA)and urokinase(UK)are both recommended for the treatment of acute ischaemic stroke(AIS)in China,but with few comparative outcome data being available.We aimed to compare the outcomes of these two thrombolytic agents for the treatment of patients within 4.5 hours of onset of AIS in routine clinical practice in China.Methods A pre-planned,prospective,nationwide,multicentre,real-world registry of consecutive patients with AIS(age≥18 years)who received r-tPA or UK within 4.5 hours of symptom onset according to local decision-making and guideline recommendations during 2017-2019.The primary effectiveness outcome was the proportion of patients with an excellent functional outcome(defined by modified Rankin scale scores 0 to 1)at 90 days.The key safety endpoint was symptomatic intracranial haemorrhage according to standard definitions.Multivariable logistic regression was used for comparative analysis,with adjustment according to propensity scores to ensure balance in baseline characteristics.Results Overall,4130 patients with AIS were registered but 320 had incomplete or missing data,leaving 3810 with available data for analysis of whom 2666 received r-tPA(median dose 0.88(IQR 0.78-0.90)mg/kg)and 1144 received UK(1.71(1.43-2.00)×104 international unit per kilogram).There were several significant intergroup differences in patient characteristics:r-tPA patients were more educated,had less history of stroke,lower systolic blood pressure,greater neurological impairment and shorter treatment times from symptom onset than UK patients.However,in adjusted analysis,the frequency of excellent outcome(OR 1.18,95%CI 1.00 to 1.40,p=0.052)and symptomatic intracranial haemorrhage(OR 0.70,95%CI 0.33 to 1.47,p=0.344)were similar between groups.Conclusions UK may be as effective and carry a similar safety profile as r-tPA in treating mild to moderate AIS within guidelines in China.Registration http://gffzzd5593dd32ed44506hbfu0cw00ubw96wv5.ffgz.tsg.suse.edu.cn identifier:NCT02854592.Xinhong Wang Xiaoqiu Li Yuming Xu Runhui Li Qingcheng Yang Yong Zhao Fengyun Wang Baoying Sheng Runqing Wang Shaoyuan Chen Lihua Wang Liying Shen Xiaowen Hou Yu Cui Duolao Wang Bin Peng Craig S Anderson Huisheng Chen On behalf of INTRECIS Investigators 2021Stroke & Vascular Neurology2021,6,4:2
12Association of microRNA polymorphisms with the risk of head and neck squamous cell carcinoma in a Chinese population:a case-control study显示文摘Background:MicroRNA(miRNA) polymorphisms may alter miRNA-related processes,and they likely contribute to cancer susceptibility.Various studies have investigated the associations between genetic variants in several key miRNAs and the risk of human cancers;however,few studies have focused on head and neck squamous cell carcinoma(HNSCC) risk.This study aimed to evaluate the associations between several key miRNA polymorphisms and HNSCC risk in a Chinese population.Methods:In this study,we genotyped five common single-nucleotide polymorphisms(SNPs) in several key miRNAs(miR-149 rs2292832,miR-146 a rs2910164,miR-605 rs2043556,miR-608 rs4919510,and miR-196a2 rs11614913) and evaluated the associations between these SNPs and HNSCC risk according to cancer site with a case-control study including 576 cases and 1552 controls,which were matched by age and sex in a Chinese population.Results:The results revealed that miR-605 rs2043556[dominant model:adjusted odds ratio(OR) 0.71,95%confidence interval(CI) 0.58-0.88;additive model:adjusted OR 0.74,95%CI 0.62-0.89]and miR-196a2 rs11614913(dominant model:adjusted OR 1.36,95%C11.08-1.72;additive model:adjusted OR 1.28,95%C11.10-1.48) were significantly associated with the risk of oral squamous cell carcinoma(OSCC).Furthermore,when these two loci were evaluated together based on the number of putative risk alleles(rs2043556 A and rs11614913 G),a significant locus-dosage effect was noted on the risk of OSCC(P_(trend) < 0.001).However,no significant association was detected between the other three SNPs(miR-149 rs2292832,miR- 146 a rs2910164,and miR-608 rs4919510) and HNSCC risk.Conclusion:Our study provided the evidence that miR-605 rs2043556 and miR-196a2 rs11614913 may have an impact on genetic susceptibility to OSCC in Chinese population.Limin Miao Lihua Wang Longbiao Zhu Jiangbo Du Xun Zhu Yuming Niu Ruixia Wang Zhibin Hu Ning Chen Hongbing Shen Hongxia Ma 2016Chinese Journal of Cancer2016,35,11:2
13Mars Orbiter magnetometer of China’s First Mars Mission Tianwen-1显示文摘As one of the seven scientific payloads on board the Tianwen-1 orbiter,the Mars Orbiter Magnetometer(MOMAG)will measure the magnetic fields of and surrounding Mars to study its space environment and the interaction with the solar wind.The instrument consists of two identical triaxial fluxgate magnetometer sensors,mounted on a 3.19 meter-long boom with a seperation of about 90 cm.The dual-magnetometers configuration will help eliminate the magnetic field interference generated by the spacecraft platform and payloads.The sensors are controlled by an electric box mounted inside the orbiter.Each magnetometer measures the ambient vector magnetic field over a wide dynamic range(to 10,000 nT per axis)with a resolution of 1.19 pT.Both magnetometers sample the ambient magnetic field at an intrinsic frequency of 128 Hz,but will operate in a model with alternating frequency between 1 and 32 Hz to meet telemetry allocations.Kai Liu XinJun Hao YiRen Li TieLong Zhang ZongHao Pan ManMing Chen XiaoWen Hu Xin Li ChengLong Shen YuMing Wang 2020Earth and Planetary Physics2020,4,4:2
14Cohort-based long-term ozone exposure-associated mortality risks with adjusted metrics:A systematic review and meta-analysis显示文摘Long-term ozone(O_(3))exposure may lead to non-communicable diseases and increase mortality risk.However,cohort-based studies are relatively rare,and inconsistent exposure metrics impair the credibility of epidemiological evidence synthetization.To provide more accurate meta-estimations,this study updates existing systematic reviews by including recent studies and summarizing the quantitative associations between O_(3) exposure and cause-specific mortality risks,based on unified exposure metrics.Cross-metric conversion factors were estimated linearly by decadal observations during 1990-2019.Haitong Zhe Sun Pei Yu Changxin Lan Michelle WLWan Sebastian Hickman Jayaprakash Murulitharan Huizhong Shen Le Yuan Yuming Guo Alexander T.Archibald 2022The Innovation2022,3,3:2
15Mineralization Ages of the Jiapigou Gold Deposits,Jilin显示文摘The Jiapigou gold deposits are typical vein type deposits associated withArchaean greenstone belts in China. According to the crosscutting relationships between dykesand auriferous veins, single hydrothermal zircon U-Pb dating and quartz K-Ar,40Ar-39Ar andRb-Sr datings, the main mineralization stage of the Jiapigou deposit has been determined to be2469-2475 Ma, while mineralization superimposition on the gold deposit occurred in1800-2000 Ma and 130-272 Ma. They form a mineralization framework of one oldermetallogenic epoch (Late Archaean-Early Proterozoic) and one younger metallogenic epoch(Mesozoic) of gold deposits in Archaean greenstone belts in China.Li Junjian Shen Baofeng Mao Debao Li Shuangbao Zhou Huifang and Cheng Yuming Tianjin Institute of Geology and Mineral Resources,Chinese Academy of Geological Sciences, Tianjin Nonferrous Metal Geological Exploration Bureau, Changchun, Jilin 1997Acta Geologica Sinica(English Edition)1997,71,2:2
16Kinematic evolution of a slow CME in corona viewed by STEREO-B on 8 October 2007显示文摘Shen Chenglong Wang Yuming Gui Bin 2011Solar Physics2011,269,2:1
17Delay-dependent H∞ filtering for stochastic systems with Markovian switching and mixed mode-dependent delays显示文摘SHEN Hao XU Shengyuan SONG Xiaona CHU Yuming 0,,:1
18Measure- ment and analysis of SHCCT diagram for CI,AM steel显示文摘Yuming Huang Xizhang Chen Zheng Shen et a/ 2013Journal of Nuclear Materials2013,,432:1
19Microstructures and thermochromic characteristics of low-cost vanadium–tungsten co-sputtered thin films显示文摘Sheng Zhou Yi Li Huiqun Zhu Ruoxi Sun Yuming Zhang Yize Huang Liu Li Yujian Shen Qiuxin Zhen Guoxiang Tong Baoying Fang 2011Surface & Coatings Technology (-)2011,,11:1
20Comprehensive Assessment and Promotion Policy of Producer Services' Competitiveness in Beijing City:A Comparative Analysis among Beijing,Tianjin,Shanghai,Guangzhou and Shenzhen显示文摘The five central cities-Beijing,Tianjin,Shanghai,Guangzhou and Shenzhen-of the three most important strategic regions in China,namely Beijing-Tianjin-Hebei metropolitan region,the Yangtze River Delta and the Pearl River Delta,are taken as a comparative analysis on urban producer services' competitiveness,especially focusing on the comparative advantages and disadvantages of producer services in Beijing.Firstly,based on an integrated indicator system including one objective hierarchy,four standard hierarchies and 35 indicator hierarchies,the study applies factor analysis model and analytic hierarchy process model reformed by entropy technology to measure the comprehensive competitiveness of producer services in the above five cities.Secondly,Beijing has comparative advantages of capital resource,industrial base,scientific research resource and market scale,since it takes the first place of the five cities in the comprehensive competitiveness of producer services,the competitiveness of industrial development,business environment and living environment,only inferior to Shanghai in the competitiveness of talent capital.Thirdly,Beijing has comparative disadvantages in the level of producer services development,urban innovation capability and living environment.Finally,five proposals are put forth to enhance the competitiveness of producer services in Beijing,namely perfecting the system of laws and statutes,supporting the development of industry association,implementing scientific development planning,introducing preferential fiscal and taxation policies and strengthening human capital reserve.Qiu Ling Fang Chuanglin Shen Yuming Liu Xiaoli 2011Chinese Journal of Population,Resources and Environment2011,9,4:1
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