The present study documents the variability of surface sensible heat flux over Northwest China using station observations for the period 1961 2000.It is found that the afternoon and nighttime sensible heat flux variat...The present study documents the variability of surface sensible heat flux over Northwest China using station observations for the period 1961 2000.It is found that the afternoon and nighttime sensible heat flux variations are remarkably different.The variability of the instant flux in the afternoon is much larger than in the nighttime.The afternoon and nighttime flux anomalies tend to be opposite.The diurnal and seasonal dependence of sensible heat flux variations is closely related to the diurnal cycle of mean land-air temperature difference.The relationship of sensible heat flux with land-air temperature difference based on the instant value differs from that based on the daily mean.The present study indicates the importance for the models to properly simulate mean land-air temperature difference and its diurnal and seasonal variations in order to capture surface sensible heat flux variability over Northwest China and predicts its plausible impacts on climate.展开更多
The main objective of this study was always to know the profile of the institutionalized people in our environment, to know their reality： age, age of admission, level of dependency and evolution during their stay, y...The main objective of this study was always to know the profile of the institutionalized people in our environment, to know their reality： age, age of admission, level of dependency and evolution during their stay, years of stay, number of children, reason for admission. We use data from more than 600 patients from different residences of different backgrounds： public and private, lay and religious, rural and urban. We performed a descriptive study expressing the results in percentages with standard deviation and later evaluated the statistical significance of the differences using the student＇s t-test for the quantitative and Chi-square variables to compare qualitative variables. The results of the study are numerous and of diverse nature, because of their extension, from the general profile of the resident, to the important gender differences, attributed in principle to the different roles of each gender in the studied generations. There are also differences depending on the funding, the reason for admission or the environment. This is at the end only the beginning of a large comparative study with non-institutionalized population, in order to compare this population.展开更多
基金supported by the National Basic Research Program of China (Grant No. 2009CB421405)the National Natural Science Foundation of China (Grant Nos.40905027 and 40730952)Program of Knowledge Innovationfor the 3rd period of Chinese Academy of Sciences (Grant No.KZCX2-YW-220)
文摘The present study documents the variability of surface sensible heat flux over Northwest China using station observations for the period 1961 2000.It is found that the afternoon and nighttime sensible heat flux variations are remarkably different.The variability of the instant flux in the afternoon is much larger than in the nighttime.The afternoon and nighttime flux anomalies tend to be opposite.The diurnal and seasonal dependence of sensible heat flux variations is closely related to the diurnal cycle of mean land-air temperature difference.The relationship of sensible heat flux with land-air temperature difference based on the instant value differs from that based on the daily mean.The present study indicates the importance for the models to properly simulate mean land-air temperature difference and its diurnal and seasonal variations in order to capture surface sensible heat flux variability over Northwest China and predicts its plausible impacts on climate.
文摘The main objective of this study was always to know the profile of the institutionalized people in our environment, to know their reality： age, age of admission, level of dependency and evolution during their stay, years of stay, number of children, reason for admission. We use data from more than 600 patients from different residences of different backgrounds： public and private, lay and religious, rural and urban. We performed a descriptive study expressing the results in percentages with standard deviation and later evaluated the statistical significance of the differences using the student＇s t-test for the quantitative and Chi-square variables to compare qualitative variables. The results of the study are numerous and of diverse nature, because of their extension, from the general profile of the resident, to the important gender differences, attributed in principle to the different roles of each gender in the studied generations. There are also differences depending on the funding, the reason for admission or the environment. This is at the end only the beginning of a large comparative study with non-institutionalized population, in order to compare this population.
