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Research on the construction of precise and healtli poverty -leviation performanceindex based on Analytic Hierarchy Process. 被引量:4
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作者 李相荣 汤榕 +2 位作者 王维成 杨静 常高峰 《卫生软科学》 2018年第5期21-23,共3页
"在文献研究法、 专家咨询法的基础上, 遵循科学性、 可操作性、 定性与定量相结合的原则, 采用层次分析法构建精准健康扶贫绩效评价指标体系,最终建立1个一级指标、3个二级指标、18个三级指标,为今后评价健康扶贫工作效果提供参考.
关键词 健康扶贫 绩效指标 层析分析法
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Different effects of economic and structural performance indexes on model construction of structural topology optimization 被引量:5
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作者 G.L.Yi Y.K.Sui 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2015年第5期777-788,共12页
The objective and constraint functions related to structural optimization designs are classified into economic and performance indexes in this paper.The influences of their different roles in model construction of str... The objective and constraint functions related to structural optimization designs are classified into economic and performance indexes in this paper.The influences of their different roles in model construction of structural topology optimization are also discussed.Furthermore,two structural topology optimization models,optimizing a performance index under the limitation of an economic index,represented by the minimum compliance with a volume constraint(MCVC)model,and optimizing an economic index under the limitation of a performance index,represented by the minimum weight with a displacement constraint(MWDC)model,are presented.Based on a comparison of numerical example results,the conclusions can be summarized as follows:(1)under the same external loading and displacement performance conditions,the results of the MWDC model are almost equal to those of the MCVC model;(2)the MWDC model overcomes the difficulties and shortcomings of the MCVC model;this makes the MWDC model more feasible in model construction;(3)constructing a model of minimizing an economic index under the limitations of performance indexes is better at meeting the needs of practical engineering problems and completely satisfies safety and economic requirements in mechanical engineering,which have remained unchanged since the early days of mechanical engineering. 展开更多
关键词 Economic index performance index Structural topology optimization models MCVC model MWDC model Safety and economy
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Effects of Dietary Crude Fiber Levels on Growth Performance and Serum Biochemical Index of Dingan Geese Aged from 35 to 70 Days 被引量:3
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作者 Liu Quanwei Wang Feng +5 位作者 Wei Limin Lin Dajie Xing Manping Yang Shaoxiong Sun Ruiping Ye Baoguo 《Animal Husbandry and Feed Science》 CAS 2019年第1期12-15,共4页
[Objective] The study was carried out to investigate the effects of dietary crude fiber on growth performance and serum biochemical in-dex of Dingan geese aged from 35 to 70 days.[Method] A total of 120 Dingan geese o... [Objective] The study was carried out to investigate the effects of dietary crude fiber on growth performance and serum biochemical in-dex of Dingan geese aged from 35 to 70 days.[Method] A total of 120 Dingan geese on day 28 with the same genetic background and similar initial weight(1 384.83.73±0.76 g) were randomly assigned into 3 groups, with 4 replicates per group and 10 geese per replicate. Geese were fed the diets containing 4.29%, 5.29% and 6.29 % crude fiber, respectively. The experiment lasted 35 d.[Result] Final weight and daily gain of 5.29 %CF group were significantly higher than those of 6.29 % CF group(P<0.05);Feed intake was markedly higher than those of 4.29% and 6.29 % CF groups(P<0.05);Feed gain ratio was significantly lower than that of 6.29 % CF group(P<0.05). Compared with 4.29% and 6.29 % CF groups, serum albumin concentrations of 5.29 % CF group increased significantly(P<0.05), while serum total protein and globin contents were higher(P>0.05), but serum uric acid level was lower(P>0.05).[Conclusion] 5.29 % crude fiber could lead to higher growth performance of Dingan geese. 展开更多
关键词 CRUDE fiber Dingan GEESE Growth performance SERUM BIOCHEMICAL index
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Research on Evaluating Index of Lightning Protection Safety Performance of High Voltage Overhead Transmission Line 被引量:4
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作者 Yi Luo Jingzhou Jiang +1 位作者 Yu Nong Shizuo Li 《Journal of Power and Energy Engineering》 2014年第4期680-686,共7页
In order to improve the lightning protection performance of transmission lines, lightning protection management has been divided into every tower that lightning protection performance has been evaluated respectively. ... In order to improve the lightning protection performance of transmission lines, lightning protection management has been divided into every tower that lightning protection performance has been evaluated respectively. According to factors such as landform, span, tower type, grounding resistance, isolator type, and so on, relative ratio of tripping operation of every tower in the line has been calculated to evaluate its lightning protection safety performance, it is beneficial to operation maintenance and lightning reconstruction of transmission lines. 展开更多
关键词 Transmission LINES LIGHTNING Protection Safety performance EVALUATING index RATIO of LIGHTNING TRIPPING Operation
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Effects of Crude Fiber Levels on Production Performance, Organ Index and Serum Biochemical Parameters of Dingan Geese Aged from 1 to 28 Days 被引量:1
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作者 Liu Quanwei Wei Limin +5 位作者 Wang Feng Lin Dajie Xing Manping Yang Shaoxiong Sun Ruiping Ye Baoguo 《Animal Husbandry and Feed Science》 CAS 2019年第3期98-102,共5页
[Objective]The paper was to investigate the effects of dietary crude fiber level on production performance,organ index and serum biochemical parameters of Dingan geese aged from 1 to 28 days.[Method]A total of 144 1-d... [Objective]The paper was to investigate the effects of dietary crude fiber level on production performance,organ index and serum biochemical parameters of Dingan geese aged from 1 to 28 days.[Method]A total of 144 1-day-old Dingan geese with the same genetic background and similar initial weight(88.75±0.21g)were randomly assigned into 3 groups with 4 replicates per group and 12 geese per replicate,and fed with the diets containing 2.56%,3.52% and 4.48% crude fiber,respectively.The trial lasted 28 d.[Result]1)The final weight and daily gain of 3.52% CF group were significantly higher than those of 2.56% CF group(P<0.05);the feed/gain ratio was markedly lower than that of 2.56% CF group(P<0.05).2)The slaughter rate,semi-eviscerated rate and leg muscle rate of 3.52% CF group were higher than those of 2.56% and 4.48% CF groups(P>0.05).3)As the dietary crude fiber levels rose,the abdominal fat rate showed a downward trend(P>0.05).4)The liver index of 3.52% CF group was significantly higher than that of 2.56% CF group(P<0.05).4)Compared with 2.5%and 4.48% CF groups,the serum albumin concentrations of 3.52% CF group markedly increased(P<0.05),the serum total protein and globin contents were higher(P>0.05),but the serum uric acid level was lower(P>0.05).[Conclusion]When the crude fiber level was 3.52%,the production performances of Dingan geese aged from 1 to 28 days were better,and the liver index and serum albumin level could be obviously improved. 展开更多
关键词 CRUDE fiber Dingan GEESE Production performance ORGAN index SERUM BIOCHEMICAL index
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Usefulness of myocardial performance index for assessing right ventricular function after percutaneous closure of atrial septal defect 被引量:2
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作者 Jingdong Ding Genshan Ma +4 位作者 Yaoyao Huang Xiaoli Zhang Jian Zhu Rong Yang Fengxiang Lu 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2007年第4期220-224,共5页
Objective Assessment of right ventricular function in patients with atrial septal defect(ASD)is difficult.The Doppler myocardial performance index(MPI)may provide a method of assessing function in these patients.The p... Objective Assessment of right ventricular function in patients with atrial septal defect(ASD)is difficult.The Doppler myocardial performance index(MPI)may provide a method of assessing function in these patients.The purposes of this study were to evaluate the right ventricular function and its changes in patients with ASD after transcatheter closure of ASD.Methods MPI,defined as the sum of isovolumic relaxation time and isovolumic contraction time derived by ejection time,was measured from tricuspid inflow and right ventricular outflow;Doppler velocity profiles recorded during routine echocardiography.Twenty nine patients(13 men,16 women;mean age 25.28±12.69,range 6 to 57 years)were diagnosed to secundum ASD[the stretched diameters of ASD were from 9 To 36(24.91±7.98)mm],and had a successfully placed Amplatzer septal occluder(ASO)(the sizes of ASO were from 11 to 40 mm);there were 81 sex-matched,age-matched healthy people(control group 41men,40 women;mean age 29.02±14.22,range 4 to 45 years).MPI was measured again on 3 days and 1 month after closure of ASD.Change in the study group was assessed and compared to the control subjects with structurally normal hearts.A complete 2-dimensional and Doppler echocardiographic examination was performed in all study groups.Results 1)The isovolumic relaxation and isovolumic contraction times[respectively(77.59±14.39)ms vs(60.93±12.94)ms,P<0.0001;(28.28±10.88)ms vs(23.64±9.01)ms,P=0.027]were prolonged,and ejection time[(260.65±21.86)ms vs(271.85±21.92)ms,P=0.033]was shortened in patients with ASD compared with that in control subjects,resulting in a marked increase in the MPI(0.40±0.07 vs 0.31±0.05,P<0.0001)from normal values;2)by Pearson's correlations,the MPI had no correlation with heart rate and blood pressure in control subjects and patients with ASD,but it correlated positively with age in patients with ASD;3)by Pearson's correlations,the MPI correlated positively with the diameter of ASD and pulmonary artery pressure;4)after transcatheter closure of ASD,the MPI decreased markedly.Conclusions 1)MPI is a conceptually new,simple,and reproducible Doppler index in patients with ASD;2)MPI is free from the effect of age,heart rate and blood pressure;(3)MPI appears to be relatively dependent on changes in the diameter of ASD and pulmonary artery pressure;4)the right ventricular function was improved after transcatheter closure of ASD. 展开更多
关键词 HEART atrial septal defect right ventricular function myocardial performance index
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Research Advances in Detection Techniques of High Performance Liquid Chromatography-Refractive Index Detector 被引量:1
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作者 Huo Fang Zhang Zhimei +3 位作者 Wang Jianjun Guo Shijin Zhou Chunfeng Fu Shijun 《Animal Husbandry and Feed Science》 CAS 2014年第2期87-90,共4页
As a highly sensitive and stable detector,refractive index detector is usually used for quantitative detection of substances such as polymer,sugar and organic acid. The research reviewed the application of HPLC-RID in... As a highly sensitive and stable detector,refractive index detector is usually used for quantitative detection of substances such as polymer,sugar and organic acid. The research reviewed the application of HPLC-RID in the fields of quantitative determination of medicine and food,in order to lay a foundation for wider use of RID. 展开更多
关键词 Refractive index detector High performance liquid chromatography Research progress
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Performance index limits of high reinforced concrete shear wall components 被引量:1
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作者 劳晓春 韩小雷 《Journal of Central South University》 SCIE EI CAS 2011年第4期1248-1255,共8页
The deformation performance index limits of high reinforced concrete (RC) shear wall components based on Chinese codes were discussed by the nonlinear finite element method. Two typical RC shear wall specimens in th... The deformation performance index limits of high reinforced concrete (RC) shear wall components based on Chinese codes were discussed by the nonlinear finite element method. Two typical RC shear wall specimens in the previous work were first used to verify the correctness of the nonlinear finite element method. Then, the nonlinear finite element method was applied to study the deformability of a set of high RC shear wall components designed according to current Chinese codes and with shear span ratio λ≥2.0. Parametric studies were made on the influence of shear span ratio, axial compression ratio, ratio of flexural capacity to shear capacity and main flexural reinforcement ratio of confined botmdary members. Finally, the deformation performance index and its limits of high RC shear wall components under severe earthquakes were proposed by the finite element model results, which offers a reference in determining the performance status of RC shear wall components designed based on Chinese codes. 展开更多
关键词 reinforced concrete shear wall components performance index limits nonlinear finite element method Chinese codes
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AN ARTERIAL PERFORMANCE INDEX 被引量:1
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作者 Min Huang(Dept. of Mechanical and Aerospace Engineering,Princeton University,princeton,NJ 08544 USA)Jinzhe Feng(Xi'an Jiaotong University,Xi'an 710049,China)Yaotian Huang(Institute of Orthopaedics,Xijing hospital,Xi'an 710032,China) 《Chinese Journal of Biomedical Engineering(English Edition)》 1998年第1期31-36,共6页
A quantitative index for evaluating the performance of artery was introduced according to the idea of energy exchange between arterial wall and blood.The index was studied by using the exponential and parabolic pressu... A quantitative index for evaluating the performance of artery was introduced according to the idea of energy exchange between arterial wall and blood.The index was studied by using the exponential and parabolic pressure-volume relations or human arteries. Methods for estimating the index in vivo based on aWindkessel model of the arterial system were proposed. Data from patients withcongestive heart failure and hypertension were used for illustration. It was shownthat the index has physiological meaning and is a useful parameter for evaluationthe performance of artery. 展开更多
关键词 ARTERIES performance index complicance BLOOD PRESSURE
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Spatio-temporal Heterogeneity in the Performance of Rural Revitalization in Chifeng City of China:Based on a Range-wide EBM-GML Model
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作者 Jiajing Li Jianing Li Pei Zhang 《Journal of Geographical Research》 2023年第2期15-33,共19页
To solve the problems of rural revitalization performance research,a quantitative model of non-oriented range-wide EBM(Epsilon-Based Measure)-GML(Global-Malmquist)based on VRS(Variable Returns to Scale)conditions incl... To solve the problems of rural revitalization performance research,a quantitative model of non-oriented range-wide EBM(Epsilon-Based Measure)-GML(Global-Malmquist)based on VRS(Variable Returns to Scale)conditions including non-desired outputs is constructed.A comprehensive spatio-temporal heterogeneity research index system of rural revitalization performance is also constructed.Taking the typical rural in Chifeng City as an example,the panel data from 2016-2020 are selected for empirical analysis,the conclusions and countermeasures are suggested as follows:1)In general,the rural revitalization performance of Chifeng City increases significantly during the five-year period,with significant spatio-temporal heterogeneity.The overall analysis shows that the overall performance value of rural revitalization in Chifeng City is 0.683 from 2016 to 2020.The highest performance value is 1 and the lowest performance value is 0.389.The performance growth rate increases year by year,with an average annual growth rate of 4.46%.2)From 2016 to 2020,the GML index of rural revitalization performance in Chifeng City is 1.174,showing an increasing trend.Based on the range of change of GML index,Chifeng City can be classified into three types:Continuous improvement,fluctuating improvement and fluctuating decline.3)Niujiayingzi,Guandongche,Zhaidamu,and Qiangangtai rural have the highest degree of technological progress. 展开更多
关键词 Rural revitalization performance EBM model GML index Spatio and temporal heterogeneity Chifeng City
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A“Three-index”Seismic Performance Evaluation Method Based on Sino-US Seismic Code
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作者 Hui Wang Shuqi Wan 《Structural Durability & Health Monitoring》 EI 2018年第3期149-167,共19页
The Code for Seismic Design of Buildings(GB50011-2010)in 2016 and the method of seismic performance-based design for high-rise buildings in the Guide for Performance-based Design of High-Rise Buildings(TBI2017)are com... The Code for Seismic Design of Buildings(GB50011-2010)in 2016 and the method of seismic performance-based design for high-rise buildings in the Guide for Performance-based Design of High-Rise Buildings(TBI2017)are compared.In view of the characteristics and limitations of the seismic performance index set by the Sino-US seismic code,a“three-index”performance index system and evaluation process considering the displacement angle of the structural interlayer,the plastic damage degree of components and the plastic strain of material is put forward;combining the example of time-history analysis of a out-of-code high-rise building under the rare earthquakes is verified.The results show that the method of seismic performance evaluation by using deformation control index in Sino-US seismic code is relatively simple;however,both are lacking in the setting of specific components and the whole structure level respectively.The"three-index"system can comprehensively and quantitatively evaluate the seismic performance of out-of-code high-rise buildings. 展开更多
关键词 Seismic performance evaluation seismic performance index out-of-code high-rise buildings rare earthquakes time-history analysis
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Effects of NS Series Composite Lactobacillus Prepa-ration on Performance,Plasma Biochemical Indexes and Immunity of Sows
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作者 WEI Ming-yu LU Jian-ming +10 位作者 ZHAO Wu HE Ying JIN Feng HUXu sun zhilyong CHEN Zhongwei LIANG Bao-zhong LIANG Jia-xing SU Qi-lian LAI Sheng-ji HU Ting-jun 《Animal Husbandry and Feed Science》 CAS 2012年第1期5-9,共5页
[Objective] The study was aimed to investigate the effects of NS series composite lactobacillus preparation on production performance and some immune indexes of sows. [Method] The sows were fed on the diets supplement... [Objective] The study was aimed to investigate the effects of NS series composite lactobacillus preparation on production performance and some immune indexes of sows. [Method] The sows were fed on the diets supplemented with the NS series composite lactobacillus prepara- tion, and the changes of production performance, plasma biochemical indexes, levels of IgG, IgA and IgM in serum and colostrum, and T lympho- cyte subpopulations were detected. [ Result] When the NS series composite lactobacillus preparation was supplemented to the sow diet at a propor- tion of 0.2%, the average weaning litter weight at 21 days old was significantly increased. The serum contents of total protein and glucose as well as the serum activities of aspartate aminotransferase (AST), alkaline phosphatase (ALP) and superoxide dismutase (SOD) were significantly in- creased after 30 d post delivery. Moreover, the levels of IgG, IgA and IgM in serum and colostrum of sows were significantly increased at the time of delivery and after 30 d post delivery. The antibodies in colostrum could be maintained at high levels. The percentage of CD3 * and CD4~ |ympho- cyte subpopulations was also increased after supplementation with the NS series composite lactobacillus preparation at a proportion of 0.2%. [ (Con- des'ion] The NS series composite lactobacillus preparation can improve performance, promote growth and metabolism, and enhance humoral and cellular immunity in sows. 展开更多
关键词 NS composite lactobacillus SOW Production performance Plasma biochemical indexes Humoral immunity Cellular immunity
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Performance Analysis of Listed Companies in the UAE-Using DEA Malmquist Index Approach
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作者 Sudipa Majumdar Behrooz Asgari 《American Journal of Operations Research》 2017年第2期133-151,共19页
Data Envelopment Analysis (DEA) is becoming an increasingly popular tool for assessing the relative performance of industries and companies. By applying DEA theory to the non-financial sector, the relative efficiency ... Data Envelopment Analysis (DEA) is becoming an increasingly popular tool for assessing the relative performance of industries and companies. By applying DEA theory to the non-financial sector, the relative efficiency of 27 listed corporations in the United Arab Emirates (UAE) has been analyzed in this paper. The focus of the study has been on the impact of the financial crisis and the recovery thereafter. Further, the productivity change was decomposed into technical efficiency change and technological change by using the non-parametric Malmquist Productivity Index (MPI) over the period from 2007 to 2014. Based on Malmquist analysis, we find that the most efficient industries during the post-crisis period were food and beverages, telecommunication and pharmaceuticals. In contrast, the sectors that were adversely affected by the crisis were services, real estate, construction and cements. The break-up of the TFP indicated that the efficiency indices in the top performing industries were driven by technological improvements or frontier effects. The top-performing companies in the UAE during the 2007-14 period demonstrated innovation-led growth, aided by the use of better technology, investments in capital equipment, and adoption of new production processes. 展开更多
关键词 performance TOTAL Factor PRODUCTIVITY Data Envelopment Analysis MALMQUIST index UNITED Arab Emirates
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Constitution of Hamiltonian Function and Solution of Optimal Control of a Sort of Performance Index
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作者 刘先省 文成林 《Chinese Quarterly Journal of Mathematics》 CSCD 1998年第2期97-102, ,共6页
Hamiltonian function is firstly constituted for solving optimal control. When character of controlled object is known,Hamiltonian function is determined by performance index. In this paper,by constituting Hamiltonian ... Hamiltonian function is firstly constituted for solving optimal control. When character of controlled object is known,Hamiltonian function is determined by performance index. In this paper,by constituting Hamiltonian function and solving optimal control of a sort of performance index,we can understand optimal control theory and apply optimal control method better. 展开更多
关键词 Hamiltonian function optimal control performance index
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Effects of Herba Picriae Extract on Growth Performance and Immune Organ Index of Guangxi Partridge Chickens
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作者 Cui YANG Xiaoguang LIAO +9 位作者 Siqian WU Huofu WAN Jing SHI Huihui CAO Linling ZHAO Dawei LAI Fanquan ZENG Fulin WANG Jiahuang YANG Zhuyue WU 《Asian Agricultural Research》 2020年第4期55-59,共5页
[Objectives]The purpose of this experiment was to study the effects of dietary supplementation of Herba Picriae extract on the growth performance and immune organ index of Guangxi partridge chickens.[Methods]A total o... [Objectives]The purpose of this experiment was to study the effects of dietary supplementation of Herba Picriae extract on the growth performance and immune organ index of Guangxi partridge chickens.[Methods]A total of 500 one-day-old Guangxi partridge chickens were selected and randomly divided into five groups,five replicates for each group and 20 chickens for each replicate.Groups A,B and C were treatment groups,in which 0.70%,0.35%and 0.175%of Herba Picriae extract was added to the basal diet,respectively.Group D was a positive drug control group,in which 0.01%colistin sulfate premix was supplemented.Group E was a blank control group,in which the chickens were fed the basal diet.The experimental period was 105 d.During the experiment,five chickens were randomly selected from each group on days 21,35 and 49,respectively for the measurement of immune organ index.[Results]When the chickens were fed basal diet supplemented with 0.175%of Herba Picriae extract,their daily body weight gain increased significantly from day 22 to day 35 and from day 71 to day 105 and tended to increase from day 1 to day 21,from day 36 to day 49,and from day 50 to day 70,with a range of 7.37%-8.72%.Dietary supplementation of 0.70%and 0.175%of Herba Picriae extract significantly promoted the growth and development of Fabricius bursae in the experimental chickens.[Conclusions]Dietary supplementation of 0.175%of Herba Picriae extract improved the growth performance and feed intake,as well as 21-d-old bursal index of the experimental chickens. 展开更多
关键词 Herba Picriae EXTRACT GUANGXI partridge CHICKEN Growth performance Immune ORGAN index
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Assessing economic performance of the three major urban agglomerations in China by using Malmquist productivity index
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作者 LI Qiu-ying 《Ecological Economy》 2019年第3期162-167,共6页
Forty years of reform and opening up,China has become to the world’s second-largest economy with great success.However,it is an undoubted actuality that the economic mode of Chinese development is still at the extens... Forty years of reform and opening up,China has become to the world’s second-largest economy with great success.However,it is an undoubted actuality that the economic mode of Chinese development is still at the extensive stage.China’s economy has shifted from a high-speed growth phase to a high-quality development phase.In this study,we analyzed three major urban agglomerations’total factor productivity index dynamically by means of Malmquist productivity i?ndex method.The results showed that MPI of Beijing-Tianjin-Hebei urban agglomeration was the highest,as the reasons of the effectiveness of dual-wheel driving both the technology progress and the cluster scale.The mean of MPI of Yangtze River Delta urban agglomeration was fallen into decline by an average of 1.3%annually due to the rate of increase of the size of the cluster towards to optimal frontier was inferior to the relative risk reduction of technology progress.Pearl River Delta urban agglomeration MPI declined by an average of 2.2%annually as a result of the contribution of technology progress reducing.The study of the economic performance of three major urban agglomerations provides a theoretical basis and important practical value for urban development of high quality optimization. 展开更多
关键词 ECONOMIC performance THREE MAJOR urban agglomerations MALMQUIST PRODUCTIVITY index
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Research on the Performance Evaluation Index System of Frontier County Governments in China ——Taking Hekou County as an Example
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作者 CHEN Yuetong SANG Yuan +1 位作者 ZHANG Chi LIU Xinbo 《International English Education Research》 2018年第4期4-6,共3页
At present, the overall economic and social development of our country is fast, but the rate of development of the remote land and territories in the land is still far behind the speed of the inland and the east. This... At present, the overall economic and social development of our country is fast, but the rate of development of the remote land and territories in the land is still far behind the speed of the inland and the east. This has also triggered a series of frontier issues. This requires our frontier government to strengthen border governance, seize the opportunity to meet challenges, and at the same time we must also strengthen the assessment of the governance capacity of the frontier government. This article hopes that through the actual investigation and study of frontier counties and the consideration of border issues according to local conditions, a set of performance evaluation index system for frontier county-level governments will be proposed, which will help the frontier government in border control. 展开更多
关键词 frontier county government performance evaluation index
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Comparison of the Performance of Three Commonly Used Electrocardiographic Indexes for the Diagnosis of Left Ventricular Hypertrophy in Black Hypertensive Patients with Reduced Kidney Function Managed at a Tertiary Healthcare Hospital: A Post-Hoc Analysis
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作者 F.B.Lepira C.M.B.Mpembe +5 位作者 F.I.N.Mbutiwi J.R.Makulo P.K.Kayembe F.M.Kajingulu E.V.Kintoki J.R.M’buyamba-Kabangu 《World Journal of Cardiovascular Diseases》 2017年第4期105-118,共14页
Background: Reduced kidney function in blacks is associated with an increased frequency of left ventricular hypertrophy. Given the unavailability of echocardiography in most developing countries, the diagnostic perfor... Background: Reduced kidney function in blacks is associated with an increased frequency of left ventricular hypertrophy. Given the unavailability of echocardiography in most developing countries, the diagnostic performance of current ECG indexes needs to be evaluated. Objective: To compare the diagnostic performance of 3 commonly used ECG indexes (Sokolow-Lyon, Cornell voltage and Cornell product) in black hypertensive patients. Methods: Electrocardiography and echocardiography estimated left ventricular mass of 155 consecutive hypertensive patients who participated from January 2012 to January 2013 to an echocardiographic cross-sectional study of left ventricular structure was analyzed to compare Cornell voltage and Cornell product indexes with Sokolow-Lyon voltage index as a reference. Reduced kidney function was defined as eGFR 2. ROC curves in relation to LVH diagnosis were used to estimate the sensitivities and specificities of each index. P Results: The sensitivity and specificity were 43% and 85%, 23% and 77% and 26% and 77% for Sokolow-Lyon, Cornell voltage and Cornell product indexes, respectively. However, Sokolow-Lyon index (AUC;95% CI: 0.64;0.50 - 0.78) showed better performance than Cornell voltage (0.42;0.25 - 0.59) and Cornell product (0.43;0.28 - 0.59). Sokolow-Lyon index cut-point ≥ 37 mm corresponded to the highest Youden index (39.4% of sensitivity and 92.3% of specificity). Conclusion: Although the overall performance of the 3 ECG indexes versus echocardiography was low, Sokolow-Lyon index performed better than the two other indexes in diagnosing LVH. 展开更多
关键词 performance ECG indexes REDUCED Kidney Function BLACK AFRICANS
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Development of Computer Software for Evaluating Performance Index of Fairly Used Vehicle Engines
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作者 Morufu Oyekola Oduola Kayode Oke +1 位作者 Kunle Joseph Akinluwade Adelana Rasaki Adetunji 《材料科学与工程(中英文A版)》 2014年第7期249-254,共6页
关键词 计算机软件 性能指标 二手车 评价 发动机 图形用户界面 道路运输系统 TIFF格式
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Simplified stiffness-based approach for seismic performance evaluation of moment-resisting frame
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作者 于琦 孟少平 +1 位作者 吴京 孙巍巍 《Journal of Southeast University(English Edition)》 EI CAS 2009年第2期241-246,共6页
Based on the concept of stiffness degradation, a damage index of the whole frame and the storey is proposed for the frame seismic performance evaluation. The index is compatible with the non-linear static analysis (e... Based on the concept of stiffness degradation, a damage index of the whole frame and the storey is proposed for the frame seismic performance evaluation. The index is compatible with the non-linear static analysis (e. g. the pushover analysis), and the structural damage is considered via plastic hinges. Simultaneously, a practical approach is developed to obtain the relationships between the proposed index and earthquake intensities based on the capacity spectrum method. The proposed index is then illustrated through two low-rise reinforced concrete frames, and it is also compared with some other indices. The results indicate that the proposed index is on the safe side and not sensitive to the lateral load pattern. The storey index is helpful to reflect the storey damage and to uncover the position of the weak storey. Finally, the relationship between performance levels and damage index values is also proposed through statistical analysis for the performance-based seismic evaluation. 展开更多
关键词 damage index seismic evaluation capacity spectrum method FRAME lateral load pattern pushover analysis performance level stiffness degradation
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