目的探讨急诊可疑脓毒症危险分层(risk-stratifcation of emergency department suspected sepsis,REDS)评分在脓毒症患者预后判断中的价值。方法收集2018年1月至2020年2月间在黄山首康医院住院的脓毒症患者的临床资料进行回顾性病例对...目的探讨急诊可疑脓毒症危险分层(risk-stratifcation of emergency department suspected sepsis,REDS)评分在脓毒症患者预后判断中的价值。方法收集2018年1月至2020年2月间在黄山首康医院住院的脓毒症患者的临床资料进行回顾性病例对照研究。计算REDS评分、急性生理学与慢性健康状况评分系统Ⅱ(acute physiology and chronic health evaluationⅡ,APACHEⅡ)评分和急诊脓毒症病死率评分(mortality in emergency department sepsis,MEDS)。通过REDS评分与APACHEⅡ和MEDS比较,评价REDS评分在脓毒症患者预后判断中的价值。结果103例患者最终被纳入研究,其中男65例(63.11%),女38例(36.89%);年龄范围42~93岁,中位数(四分位数)74(65,82)岁;72例(69.91%)存活(存活组),31例死亡(30.09%)(死亡组)。存活组和死亡组的REDS评分[(5.28±2.10)分与(7.87±2.53)分]、MEDS评分[(6.64±3.32)分与(9.06±3.36)分]、APACHEⅡ评分[(18.96±6.72)分与(21.87±6.15)分],差异均有统计学意义(t=5.404,P<0.001;t=3.381,P=0.001;t=2.067,P=0.041)。REDS评分7.5时Youden指数最大(0.381),受试者工作特征曲线下面积0.777(95%可信区间:0.678~0.876,P<0.001)。APACHEⅡ评分19.5时Youden指数最大(0.177),受试者工作特征曲线下面积0.614(95%可信区间:0.499~0.729,P=0.068)。MEDS评分10.5时Youden指数最大(0.341),受试者工作特征曲线下面积0.696(95%可信区间:0.590~0.802,P=0.002)。REDS评分的受试者工作特征曲线下面积大于APACHEⅡ评分(Z=1.987,P=0.046)。结论REDS评分对脓毒症患者病情和预后判断有较好的效果,与MEDS评分相当,但优于APACHEⅡ评分。展开更多
In the process of designing self-elevating drilling unit, it is important, yet complicated, to use comparison and filtering to select the optimum scheme from the feasible ones. In this research, an index system and me...In the process of designing self-elevating drilling unit, it is important, yet complicated, to use comparison and filtering to select the optimum scheme from the feasible ones. In this research, an index system and methodology for the evaluation of self-elevating drilling unit was proposed. Based on this, a multi-objective combinatorial optimization model was developed, using the improved grey relation Analysis （GRA）, in which the analytic hierarchy process （AHP） was used to determine the weights of the evaluating indices. It considered the connections within the indices, reflecting the objective nature of things, and also considered the subjective interests of ship owners and the needs of designers. The evaluation index system and evaluation method can be used in the selection of an optimal scheme and advanced assessment. A case study shows the index system and evaluation method are scientific, reasonable, and easy to put into practice. At the same time, such an evaluation index system and evaluation method will be helpful for making decisions for other mobile platforms.展开更多
In this paper, classification models are used as tools to make final decision. Fuzzy method provides the mathematical tools for quantitative analysis and dealing with ambiguous concepts. Analytic Hierarchy Process (AH...In this paper, classification models are used as tools to make final decision. Fuzzy method provides the mathematical tools for quantitative analysis and dealing with ambiguous concepts. Analytic Hierarchy Process (AHP) is used to obtain the weight of each index and enables examiners to visualize the decision process and obtain more reasonable evaluation values to solve some problems. An example is given at the end of this paper.展开更多
Due to the increasingly serious environmental pollution and destruction,especially humans' unreasonable activities,the ecological and economic system(EES) issues of Northwest region in China have attracted more an...Due to the increasingly serious environmental pollution and destruction,especially humans' unreasonable activities,the ecological and economic system(EES) issues of Northwest region in China have attracted more and more attention of the researchers.Aiming at evaluating its ecological and economic system health,a multi-objective evaluation framework called PressureState-Response(PSR) was established to describe the ecological and economic health situations.Meanwhile,an integrative set pair model combining set pair analysis(SPA) and fuzzy analytic hierarchy process(FAHP) was proposed to assess the ecological and economic system.Then the EES status of five northwest provinces(Shanxi,Gansu,Qinghai,Ningxia and Xinjiang) of Northwest region in China was evaluated during 1985 to 2009.The EES development trends of five provinces are obtained.In general,the health values of five provinces showed a rising trend.The health values of five provinces grew rapidly during 1985 to 2000.After 2000,the health values of five provinces still followed the present growth trend,but the growth is relatively smooth.The results show that the method proposed is effective for assessing the health of ecological and economic system.展开更多
The strategic researches about vertical industry B2B E-commerce company are insufficient. The existing e-commerce strategic researches have many problems in practical application. Based on AHP and fuzzy evaluation, th...The strategic researches about vertical industry B2B E-commerce company are insufficient. The existing e-commerce strategic researches have many problems in practical application. Based on AHP and fuzzy evaluation, the paper studies strategic programming evaluation of vertical industry B2B E-commerce, establishes strategic ambiguity evaluation model of vertical industry B2B e-commerce company, selects the best strategic program from the altennative strategic programs, and makes empirical analysis. Lastly, based on summarizing the thesis, the paper proposes suggestions and prospection for the study in the future.展开更多
To understand implementation of a nationwide sloping farmland soil erosion comprehensive control project during China＇s 12 th Five-Year Plan we used data collection and expert consultation. We selected 24 indexes acr...To understand implementation of a nationwide sloping farmland soil erosion comprehensive control project during China＇s 12 th Five-Year Plan we used data collection and expert consultation. We selected 24 indexes across three aspects including project management, engineering construction and implementation benefit and used AHP-grey correlation analysis methods. We found that the scores for engineering construction were greater than 0.65 in most of the provinces, autonomous regions and municipalities. These scores are high and scores for project management and implementation benefit are between 0.45–0.65; however, overall scores are low. The comprehensive evaluation results are normally distributed. The composite scores for Sichuan, Yunnan and Guizhou are 0.71, 0.68 and 0.68 respectively, indicating that the implementation effects are good. The scores for Jilin and Liaoning are 0.38 and 0.42 respectively, indicating that the implementation effects need improvement. Scores for other provinces are between 0.45–0.65 and the effects are medium. The evaluation results show certain zonal rules spatially and the implementation effect in karst regions of Southwest China is the highest, followed by the purple soil region in Southwest China, Loess Plateau region of Northwest China, earth-rock mountain region of North China and red soil hilly region of South China. The implementation effect in the black soil region of Northeast China suggests that improvement is needed in this region.展开更多
文摘目的探讨急诊可疑脓毒症危险分层(risk-stratifcation of emergency department suspected sepsis,REDS)评分在脓毒症患者预后判断中的价值。方法收集2018年1月至2020年2月间在黄山首康医院住院的脓毒症患者的临床资料进行回顾性病例对照研究。计算REDS评分、急性生理学与慢性健康状况评分系统Ⅱ(acute physiology and chronic health evaluationⅡ,APACHEⅡ)评分和急诊脓毒症病死率评分(mortality in emergency department sepsis,MEDS)。通过REDS评分与APACHEⅡ和MEDS比较,评价REDS评分在脓毒症患者预后判断中的价值。结果103例患者最终被纳入研究,其中男65例(63.11%),女38例(36.89%);年龄范围42~93岁,中位数(四分位数)74(65,82)岁;72例(69.91%)存活(存活组),31例死亡(30.09%)(死亡组)。存活组和死亡组的REDS评分[(5.28±2.10)分与(7.87±2.53)分]、MEDS评分[(6.64±3.32)分与(9.06±3.36)分]、APACHEⅡ评分[(18.96±6.72)分与(21.87±6.15)分],差异均有统计学意义(t=5.404,P<0.001;t=3.381,P=0.001;t=2.067,P=0.041)。REDS评分7.5时Youden指数最大(0.381),受试者工作特征曲线下面积0.777(95%可信区间:0.678~0.876,P<0.001)。APACHEⅡ评分19.5时Youden指数最大(0.177),受试者工作特征曲线下面积0.614(95%可信区间:0.499~0.729,P=0.068)。MEDS评分10.5时Youden指数最大(0.341),受试者工作特征曲线下面积0.696(95%可信区间:0.590~0.802,P=0.002)。REDS评分的受试者工作特征曲线下面积大于APACHEⅡ评分(Z=1.987,P=0.046)。结论REDS评分对脓毒症患者病情和预后判断有较好的效果,与MEDS评分相当,但优于APACHEⅡ评分。
基金Supported by the National 863 Plan Foundation under Grant No.2003AA414060
文摘In the process of designing self-elevating drilling unit, it is important, yet complicated, to use comparison and filtering to select the optimum scheme from the feasible ones. In this research, an index system and methodology for the evaluation of self-elevating drilling unit was proposed. Based on this, a multi-objective combinatorial optimization model was developed, using the improved grey relation Analysis （GRA）, in which the analytic hierarchy process （AHP） was used to determine the weights of the evaluating indices. It considered the connections within the indices, reflecting the objective nature of things, and also considered the subjective interests of ship owners and the needs of designers. The evaluation index system and evaluation method can be used in the selection of an optimal scheme and advanced assessment. A case study shows the index system and evaluation method are scientific, reasonable, and easy to put into practice. At the same time, such an evaluation index system and evaluation method will be helpful for making decisions for other mobile platforms.
文摘In this paper, classification models are used as tools to make final decision. Fuzzy method provides the mathematical tools for quantitative analysis and dealing with ambiguous concepts. Analytic Hierarchy Process (AHP) is used to obtain the weight of each index and enables examiners to visualize the decision process and obtain more reasonable evaluation values to solve some problems. An example is given at the end of this paper.
基金supported in partially by the National Society Science Fund of China(Grant No.09CJY020)the Special Fund of State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,China(Grant No. 2011585312)+1 种基金the Fundamental Research Funds for the Central Universities of Hohai University2010 Jiangsu Province Qing Lan Project
文摘Due to the increasingly serious environmental pollution and destruction,especially humans' unreasonable activities,the ecological and economic system(EES) issues of Northwest region in China have attracted more and more attention of the researchers.Aiming at evaluating its ecological and economic system health,a multi-objective evaluation framework called PressureState-Response(PSR) was established to describe the ecological and economic health situations.Meanwhile,an integrative set pair model combining set pair analysis(SPA) and fuzzy analytic hierarchy process(FAHP) was proposed to assess the ecological and economic system.Then the EES status of five northwest provinces(Shanxi,Gansu,Qinghai,Ningxia and Xinjiang) of Northwest region in China was evaluated during 1985 to 2009.The EES development trends of five provinces are obtained.In general,the health values of five provinces showed a rising trend.The health values of five provinces grew rapidly during 1985 to 2000.After 2000,the health values of five provinces still followed the present growth trend,but the growth is relatively smooth.The results show that the method proposed is effective for assessing the health of ecological and economic system.
文摘The strategic researches about vertical industry B2B E-commerce company are insufficient. The existing e-commerce strategic researches have many problems in practical application. Based on AHP and fuzzy evaluation, the paper studies strategic programming evaluation of vertical industry B2B E-commerce, establishes strategic ambiguity evaluation model of vertical industry B2B e-commerce company, selects the best strategic program from the altennative strategic programs, and makes empirical analysis. Lastly, based on summarizing the thesis, the paper proposes suggestions and prospection for the study in the future.
基金National Key Research and Development Program of China(2016YFC0503700)Nationwide Financial Budget Project"Water and soil conservation business"(126216229000150001)
文摘To understand implementation of a nationwide sloping farmland soil erosion comprehensive control project during China＇s 12 th Five-Year Plan we used data collection and expert consultation. We selected 24 indexes across three aspects including project management, engineering construction and implementation benefit and used AHP-grey correlation analysis methods. We found that the scores for engineering construction were greater than 0.65 in most of the provinces, autonomous regions and municipalities. These scores are high and scores for project management and implementation benefit are between 0.45–0.65; however, overall scores are low. The comprehensive evaluation results are normally distributed. The composite scores for Sichuan, Yunnan and Guizhou are 0.71, 0.68 and 0.68 respectively, indicating that the implementation effects are good. The scores for Jilin and Liaoning are 0.38 and 0.42 respectively, indicating that the implementation effects need improvement. Scores for other provinces are between 0.45–0.65 and the effects are medium. The evaluation results show certain zonal rules spatially and the implementation effect in karst regions of Southwest China is the highest, followed by the purple soil region in Southwest China, Loess Plateau region of Northwest China, earth-rock mountain region of North China and red soil hilly region of South China. The implementation effect in the black soil region of Northeast China suggests that improvement is needed in this region.
