Objective:compare the habits and features of obese (BMI>25) and normal (BMI<25) individuals and express a method to ameliorate the life styles using a cross-sectional experiment.Methods:A total of 220 randomly s...Objective:compare the habits and features of obese (BMI>25) and normal (BMI<25) individuals and express a method to ameliorate the life styles using a cross-sectional experiment.Methods:A total of 220 randomly selected cases were divided into case group (n=110) and control group (n=100) according to the calculated BMI level.Samples with BMI>25 kg/m2 were assigned to the case (obsess) group and those with BMI ranging from 20 to 25 were assigned to control (normal) group.The Miller-Smith life style questionnaires consisting 20 questions each with 5 different answers were given to both groups.Data of the questionnaires were collected and analyzed using t-test and Chi-square with SPSS.Results:No significant differences were found among the two groups in terms of the mean age,gender,level of education,marital status,insurance,breakfast,lunch or dinner,fried meat,legumes,caffeinated beverages,the length of sleep during 24 h,cigarette smoking and losing job or spouse.However,in regards to use of vegetables,sausage,fried potatoes,enriched breads,low fat milk,low salt,candies and chocolates significant relations were found (P<0.05).Conclusion:The present study suggests one way to control obesity and prevent diseases is to ameliorate the life styles.There is a relation between health and stress and irregularity of meals,such as breakfast skipping,is associated with overweight and obesity in adolescence.展开更多
In order to evaluate the effects of mesh generation techniques and grid convergence on pump performance in centrifugal pump model, three widely used mesh styles including structured hexahedral, unstructured tetrahedra...In order to evaluate the effects of mesh generation techniques and grid convergence on pump performance in centrifugal pump model, three widely used mesh styles including structured hexahedral, unstructured tetrahedral and hybrid prismatic/tetrahedral meshes were generated for a centrifugal pump model. And quantitative grid convergence was assessed based on a grid convergence index(GCI), which accounts for the degree of grid refinement. The structured, unstructured or hybrid meshes are found to have certain difference for velocity distributions in impeller with the change of grid cell number. And the simulation results have errors to different degrees compared with experimental data. The GCI-value for structured meshes calculated is lower than that for the unstructured and hybrid meshes. Meanwhile, the structured meshes are observed to get more vortexes in impeller passage.Nevertheless, the hybrid meshes are found to have larger low-velocity area at outlet and more secondary vortexes at a specified location than structured meshes and unstructured meshes.展开更多
Much research has focused on learners' individual differences from cognitive and affective perspectives on Second Language Acquisition,while relatively little research has been conducted to survey the role of lear...Much research has focused on learners' individual differences from cognitive and affective perspectives on Second Language Acquisition,while relatively little research has been conducted to survey the role of learning styles empirically.As for third language learners' learning styles,fewer researchers have examined the differences.Using the Index of Learning Styles(ILS) developed by Felder and Soloman,this paper investigates the general distribution of different learning styles among various ethnic minorities' third language learners,and explores the correlation between learning styles and gender,nationalities.In the end,it presents several pedagogical suggestions,especially for third language learning and teaching.展开更多
In order to make most software engineers and managers pay more attention to software quality at source level, two confusing terms-coding standard and programming style-were reviewed and compared. An evolutionary model...In order to make most software engineers and managers pay more attention to software quality at source level, two confusing terms-coding standard and programming style-were reviewed and compared. An evolutionary model of quality assurance at source code level was proposed, which implies that coding standard should be better accepted and more emphasized than programming style. Our current researches on evaluating the compliance with coding standards will likely make the strategy of quality assurance at source code level more operable.展开更多
目的探讨大学生生命意义感与父母教养方式、应对方式、幸福感指数的关系。方法采用生命意义感量表(PIL)、简式父母教养方式问卷(S-EMBU)、简易应对方式量表(SCSS)、幸福感指数量表(Index of Well-Being),对569名大学生团体施测。结果 1...目的探讨大学生生命意义感与父母教养方式、应对方式、幸福感指数的关系。方法采用生命意义感量表(PIL)、简式父母教养方式问卷(S-EMBU)、简易应对方式量表(SCSS)、幸福感指数量表(Index of Well-Being),对569名大学生团体施测。结果 1大学生生命意义感与父母情感温暖、积极应对、幸福感指数正相关(r=0.401,0.416,0.404,0.661;P<0.01);2多元逐步回归分析表明,幸福感指数、母亲情感温暖、积极应对正向预测大学生生命意义感(R2=0.542,P<0.001);3幸福感指数、积极应对方式分别在母亲情感温暖与大学生生命意义感间起部分中介作用。结论母亲情感温暖不仅直接预测生命意义感,还通过幸福感指数、积极应对方式间接预测生命意义感。展开更多
文摘Objective:compare the habits and features of obese (BMI>25) and normal (BMI<25) individuals and express a method to ameliorate the life styles using a cross-sectional experiment.Methods:A total of 220 randomly selected cases were divided into case group (n=110) and control group (n=100) according to the calculated BMI level.Samples with BMI>25 kg/m2 were assigned to the case (obsess) group and those with BMI ranging from 20 to 25 were assigned to control (normal) group.The Miller-Smith life style questionnaires consisting 20 questions each with 5 different answers were given to both groups.Data of the questionnaires were collected and analyzed using t-test and Chi-square with SPSS.Results:No significant differences were found among the two groups in terms of the mean age,gender,level of education,marital status,insurance,breakfast,lunch or dinner,fried meat,legumes,caffeinated beverages,the length of sleep during 24 h,cigarette smoking and losing job or spouse.However,in regards to use of vegetables,sausage,fried potatoes,enriched breads,low fat milk,low salt,candies and chocolates significant relations were found (P<0.05).Conclusion:The present study suggests one way to control obesity and prevent diseases is to ameliorate the life styles.There is a relation between health and stress and irregularity of meals,such as breakfast skipping,is associated with overweight and obesity in adolescence.
基金Projects(51109095,51179075,51309119)supported by the National Natural Science Foundation of ChinaProject(BE2012131)supported by Science and Technology Support Program of Jiangsu Province,China
文摘In order to evaluate the effects of mesh generation techniques and grid convergence on pump performance in centrifugal pump model, three widely used mesh styles including structured hexahedral, unstructured tetrahedral and hybrid prismatic/tetrahedral meshes were generated for a centrifugal pump model. And quantitative grid convergence was assessed based on a grid convergence index(GCI), which accounts for the degree of grid refinement. The structured, unstructured or hybrid meshes are found to have certain difference for velocity distributions in impeller with the change of grid cell number. And the simulation results have errors to different degrees compared with experimental data. The GCI-value for structured meshes calculated is lower than that for the unstructured and hybrid meshes. Meanwhile, the structured meshes are observed to get more vortexes in impeller passage.Nevertheless, the hybrid meshes are found to have larger low-velocity area at outlet and more secondary vortexes at a specified location than structured meshes and unstructured meshes.
文摘Much research has focused on learners' individual differences from cognitive and affective perspectives on Second Language Acquisition,while relatively little research has been conducted to survey the role of learning styles empirically.As for third language learners' learning styles,fewer researchers have examined the differences.Using the Index of Learning Styles(ILS) developed by Felder and Soloman,this paper investigates the general distribution of different learning styles among various ethnic minorities' third language learners,and explores the correlation between learning styles and gender,nationalities.In the end,it presents several pedagogical suggestions,especially for third language learning and teaching.
文摘In order to make most software engineers and managers pay more attention to software quality at source level, two confusing terms-coding standard and programming style-were reviewed and compared. An evolutionary model of quality assurance at source code level was proposed, which implies that coding standard should be better accepted and more emphasized than programming style. Our current researches on evaluating the compliance with coding standards will likely make the strategy of quality assurance at source code level more operable.
文摘目的探讨大学生生命意义感与父母教养方式、应对方式、幸福感指数的关系。方法采用生命意义感量表(PIL)、简式父母教养方式问卷(S-EMBU)、简易应对方式量表(SCSS)、幸福感指数量表(Index of Well-Being),对569名大学生团体施测。结果 1大学生生命意义感与父母情感温暖、积极应对、幸福感指数正相关(r=0.401,0.416,0.404,0.661;P<0.01);2多元逐步回归分析表明,幸福感指数、母亲情感温暖、积极应对正向预测大学生生命意义感(R2=0.542,P<0.001);3幸福感指数、积极应对方式分别在母亲情感温暖与大学生生命意义感间起部分中介作用。结论母亲情感温暖不仅直接预测生命意义感,还通过幸福感指数、积极应对方式间接预测生命意义感。
