Assessment of temporal and spatial variations in surface water quality is important to evaluate the health of a watershed and make necessary management decisions to control current and future pollution of receiving wa...Assessment of temporal and spatial variations in surface water quality is important to evaluate the health of a watershed and make necessary management decisions to control current and future pollution of receiving water bodies. In this work, surface water quality data for 12 physical and chemical parameters collected from 10 sampling sites in the Nenjiang River basin during the years(2012-2013) were analyzed. The results show that river water quality has significant temporal and spatial variations. Hierarchical cluster analysis(HCA) grouped 12 months into three periods(LF, MF and HF) and classified 10 monitoring sites into three regions(LP, MP and HP) based on the similarity of water quality characteristics. The principle component analysis(PCA)/factor analysis(FA) was used to recognize the factors or origins responsible for temporal and spatial water quality variations. Temporal and spatial PCA/FA revealed that the Nenjiang River water chemistry was strongly affected by rock/water interaction, hydrologic processes and anthropogenic activities. This work demonstrates that the application of HCA and PCA/FA has achieved meaningful classification based on temporal and spatial criteria.展开更多
Studying the process of the decision-making in family is a necessity. The main aim of this study is to recognize the factors affecting decision-making in family. This investigation has been performed by using the surv...Studying the process of the decision-making in family is a necessity. The main aim of this study is to recognize the factors affecting decision-making in family. This investigation has been performed by using the survey method and 200 people were studied, emphasizing the approaches of Collins, Ingellhart, Weber, and Watt. The present study attempts to probe the role of women in power relationships in family. To analyze the data, the multivariable regression has been used. The result from the multivariable regression statistical analysis of participation in family decision-making equals R2 = .3. It can be concluded that the duration of marriage life, age, and men＇s age of marriage have affected the women＇s family participation. The comparison of regression quotient shows that marriage duration has the most share in dependent variable changes.展开更多
基金Project(2012ZX07501002-001)supported by Major Science and Technology Program for Water Pollution Control and Treatment of the Ministry of Science and Technology,China
文摘Assessment of temporal and spatial variations in surface water quality is important to evaluate the health of a watershed and make necessary management decisions to control current and future pollution of receiving water bodies. In this work, surface water quality data for 12 physical and chemical parameters collected from 10 sampling sites in the Nenjiang River basin during the years(2012-2013) were analyzed. The results show that river water quality has significant temporal and spatial variations. Hierarchical cluster analysis(HCA) grouped 12 months into three periods(LF, MF and HF) and classified 10 monitoring sites into three regions(LP, MP and HP) based on the similarity of water quality characteristics. The principle component analysis(PCA)/factor analysis(FA) was used to recognize the factors or origins responsible for temporal and spatial water quality variations. Temporal and spatial PCA/FA revealed that the Nenjiang River water chemistry was strongly affected by rock/water interaction, hydrologic processes and anthropogenic activities. This work demonstrates that the application of HCA and PCA/FA has achieved meaningful classification based on temporal and spatial criteria.
文摘Studying the process of the decision-making in family is a necessity. The main aim of this study is to recognize the factors affecting decision-making in family. This investigation has been performed by using the survey method and 200 people were studied, emphasizing the approaches of Collins, Ingellhart, Weber, and Watt. The present study attempts to probe the role of women in power relationships in family. To analyze the data, the multivariable regression has been used. The result from the multivariable regression statistical analysis of participation in family decision-making equals R2 = .3. It can be concluded that the duration of marriage life, age, and men＇s age of marriage have affected the women＇s family participation. The comparison of regression quotient shows that marriage duration has the most share in dependent variable changes.
