Congo River has abundant hydropower resources,and large-scale cascade power stations,such as the Grand Inga,can be constructed in downstream locations.However,the fragile economic foundations of the Democratic Republi...Congo River has abundant hydropower resources,and large-scale cascade power stations,such as the Grand Inga,can be constructed in downstream locations.However,the fragile economic foundations of the Democratic Republic of the Congo and neighbor!ng Central African countries,and the small-scale regional power consumption market prohibit the implementation of large-scale hydro power projects.As the high-voltage,I on g-dista nee power transmission tech no logy matures,hydropower from the Grand Inga can be delivered to load centers in other regions of Africa.This study establishes a 6 dime nsional comprehe nsive assessment model using the best-worst method to evaluate large-scale,I on g-distance,cross-border power intercon necti on projects.The model is applied to evaluate all the can didate in ter-regional power delivery schemes of the Inga III hydropower station,and the evaluation results can effectively help investment institutions and policy makers in policy making and potential market targeting.展开更多
A mathematical model for the estimation of critical constant(Z c)of organic compounds has been proposed as follows:Z c=a 0+a 1x 1+a 2x 2+a 3x2 1+a 4x2 2x 1=T K 1 bM K 2A K 3d K 4,x 1=T K 5 bM K 6A K 7d K 8in which, T ...A mathematical model for the estimation of critical constant(Z c)of organic compounds has been proposed as follows:Z c=a 0+a 1x 1+a 2x 2+a 3x2 1+a 4x2 2x 1=T K 1 bM K 2A K 3d K 4,x 1=T K 5 bM K 6A K 7d K 8in which, T b: normal boiling point, M: molecular weight, N: atomic number of molecular; and a 0,a 1,a 2,a 3,a 4, K 1,K 2,K 3,K 4,K 5,K 6,K 7,K 8 are parameters which are various with the kinds of organic compounds. The validity of these models has been tested extensively with the experimental data of 190 organic compounds. The calculation A.D.(%) of Z c are 2 63, which is obviously lower than those estimated by Wang’s, Joback’s and MXXC’s methods, respectively.展开更多
目的:探讨操作技能直接观察评估(direct observation of procedural skills,DOPS)在物理治疗学实践教学中的应用效果,发现有效的教学过程和评价方式,提高教学质量。方法:选取台州学院2019级康复治疗学专业学生57人纳入观察组,2018级康...目的:探讨操作技能直接观察评估(direct observation of procedural skills,DOPS)在物理治疗学实践教学中的应用效果,发现有效的教学过程和评价方式,提高教学质量。方法:选取台州学院2019级康复治疗学专业学生57人纳入观察组,2018级康复治疗学专业学生56人纳入对照组,观察组在物理治疗学实践课程中引入DOPS,对照组采用传统教学模式授课,2组在期末均进行一次DOPS考核,比较2组期末DOPS成绩及对DOPS评估结果的满意度。对DOPS项目11(整体表现)得分与总平均分行相关性分析。对观察组学生行问卷调查,评价对DOPS考核方案的认同度。结果:观察组期末DOPS考核总平均分显著高于对照组(P<0.01);项目1~6、项目10~12得分观察组均高于对照组(P<0.05)。观察组教师及学生满意度均高于对照组(P<0.05)。DOPS项目11得分与总平均分之间存在高强度的正相关关系(r=0.851,P<0.01)。问卷调查显示,观察组80.0%以上的学生对DOPS可“提高学生的康复技能”、“应继续实施DOPS”等4个项目表示非常同意。结论:DOPS教学及评价方式可有效的促进学生康复技能的提高,值得在康复物理治疗学教学中进行推广。展开更多
基金National Key Reaearch and Development Program of China(2016YFB0900400).
文摘Congo River has abundant hydropower resources,and large-scale cascade power stations,such as the Grand Inga,can be constructed in downstream locations.However,the fragile economic foundations of the Democratic Republic of the Congo and neighbor!ng Central African countries,and the small-scale regional power consumption market prohibit the implementation of large-scale hydro power projects.As the high-voltage,I on g-dista nee power transmission tech no logy matures,hydropower from the Grand Inga can be delivered to load centers in other regions of Africa.This study establishes a 6 dime nsional comprehe nsive assessment model using the best-worst method to evaluate large-scale,I on g-distance,cross-border power intercon necti on projects.The model is applied to evaluate all the can didate in ter-regional power delivery schemes of the Inga III hydropower station,and the evaluation results can effectively help investment institutions and policy makers in policy making and potential market targeting.
文摘A mathematical model for the estimation of critical constant(Z c)of organic compounds has been proposed as follows:Z c=a 0+a 1x 1+a 2x 2+a 3x2 1+a 4x2 2x 1=T K 1 bM K 2A K 3d K 4,x 1=T K 5 bM K 6A K 7d K 8in which, T b: normal boiling point, M: molecular weight, N: atomic number of molecular; and a 0,a 1,a 2,a 3,a 4, K 1,K 2,K 3,K 4,K 5,K 6,K 7,K 8 are parameters which are various with the kinds of organic compounds. The validity of these models has been tested extensively with the experimental data of 190 organic compounds. The calculation A.D.(%) of Z c are 2 63, which is obviously lower than those estimated by Wang’s, Joback’s and MXXC’s methods, respectively.
文摘目的:探讨操作技能直接观察评估(direct observation of procedural skills,DOPS)在物理治疗学实践教学中的应用效果,发现有效的教学过程和评价方式,提高教学质量。方法:选取台州学院2019级康复治疗学专业学生57人纳入观察组,2018级康复治疗学专业学生56人纳入对照组,观察组在物理治疗学实践课程中引入DOPS,对照组采用传统教学模式授课,2组在期末均进行一次DOPS考核,比较2组期末DOPS成绩及对DOPS评估结果的满意度。对DOPS项目11(整体表现)得分与总平均分行相关性分析。对观察组学生行问卷调查,评价对DOPS考核方案的认同度。结果:观察组期末DOPS考核总平均分显著高于对照组(P<0.01);项目1~6、项目10~12得分观察组均高于对照组(P<0.05)。观察组教师及学生满意度均高于对照组(P<0.05)。DOPS项目11得分与总平均分之间存在高强度的正相关关系(r=0.851,P<0.01)。问卷调查显示,观察组80.0%以上的学生对DOPS可“提高学生的康复技能”、“应继续实施DOPS”等4个项目表示非常同意。结论:DOPS教学及评价方式可有效的促进学生康复技能的提高,值得在康复物理治疗学教学中进行推广。
