AIM:To evaluate the difference in diagnostic performance of hydro-stomach computed tomography(CT) to detect early gastric cancer(EGC) between blinded and unblinded analysis and to assess independent factors affecting ...AIM:To evaluate the difference in diagnostic performance of hydro-stomach computed tomography(CT) to detect early gastric cancer(EGC) between blinded and unblinded analysis and to assess independent factors affecting visibility of cancer foci.METHODS:Two radiologists initially blinded and then unblinded to gastroscopic and surgical-histological findings independently reviewed hydro-stomach CT images of 110 patients with single EGC.They graded the visibility of cancer foci for each of three gastric segments(upper,middle and lower thirds) using a 4-point scale(1:definitely absent,2:probably absent,3:probably present,and 4:definitely present).The sensitivity and specificity for detecting an EGC were calculated.Intraobserver and interobserver agreements were analyzed.The visibility of an EGC was evaluated with regard to tumor size,invasion depth,gastric segments,histological type and gross morphology using univariate and multivariate analysis.RESULTS:The respective sensitivities and specificities [reviewer 1:blinded,20%(22/110) and 98%(215/220);unblinded,27%(30/110) and 100%(219/220)/reviewer 2:blinded,19%(21/110) and 98%(216/220);unblinded,25%(27/110) and 98%(215/220)] were not significantly different.Although intraobserver agreements were good(weighted κ = 0.677 and 0.666),interobserver agreements were fair(blinded,0.371) or moderate(unblinded,0.558).For both univariate and multivariate analyses,the tumor size and invasion depth were statistically significant factors affecting visibility.CONCLUSION:The diagnostic performance of hydrostomach CT to detect an EGC was not significantly different between blinded and unblinded analysis.The tumor size and invasion depth were independent factors for visibility.展开更多
As a new affective variable in the field of L2 （Second Language） Acquisition, the study of WTC （Willingness to Communicate） has attracted widespread attention since the 1990s, which is not only an effective way to...As a new affective variable in the field of L2 （Second Language） Acquisition, the study of WTC （Willingness to Communicate） has attracted widespread attention since the 1990s, which is not only an effective way to promote language learning but also an important language target itself. Based on the data got from the questionnaire, the present study intends to explore the level, gender difference, correlation with academic .performance, and influencing factors of English majors＇ WTC inside classroom using both quantitative and qualitative research method. The results reveal that English majors＇ WTC inside classroom is comparatively high; there is no significant gender difference in English majors＇ WTC inside classroom, and there is significant positive correlation between WTC inside classroom and academic achievement; furthermore, language capacity, language anxiety, and communicative atmosphere are the main influencing factors展开更多
On the basis of an analysis of data from the Chinese Social Survey(CSS)2015,and with male social participation as the reference,we undertook an empirical study of Chinese women’s current social participation and the ...On the basis of an analysis of data from the Chinese Social Survey(CSS)2015,and with male social participation as the reference,we undertook an empirical study of Chinese women’s current social participation and the factors affecting it along the two dimensions of“marriage and family life”and“employment and income status,”as well as the basic characteristics of individuals.Our findings show that in general women display a lower level of social participation than men.In terms of type of social participation,women are more likely to take part in policy-supported activities or serve as volunteers for public interest activities but less likely to participate in the activities of particular“action organizations”or the expression of opinion.Women’s social participation is affected by many factors,including basic individual characteristics,marital status and family life,and employment and income status.A further gender comparison finds that female social participation tends to be more affected by marriage and family life,whereas male social participation is more closely related to employment and income status.We conclude that although more Chinese women have stepped out of the bonds of“home and family,”their social participation“outside the family”is family-bound in a way that is quite different that of men.Hence if we are to pursue gender equality at the level of social participation,it remains necessary to give women greater assurances in terms of marriage and family life by encouraging the realization of their self-worth and facilitating their social development,so as to coordinate and alleviate the double pressures of family and work,thus making women’s social participation an important force and enhancing their all-round development.展开更多
文摘AIM:To evaluate the difference in diagnostic performance of hydro-stomach computed tomography(CT) to detect early gastric cancer(EGC) between blinded and unblinded analysis and to assess independent factors affecting visibility of cancer foci.METHODS:Two radiologists initially blinded and then unblinded to gastroscopic and surgical-histological findings independently reviewed hydro-stomach CT images of 110 patients with single EGC.They graded the visibility of cancer foci for each of three gastric segments(upper,middle and lower thirds) using a 4-point scale(1:definitely absent,2:probably absent,3:probably present,and 4:definitely present).The sensitivity and specificity for detecting an EGC were calculated.Intraobserver and interobserver agreements were analyzed.The visibility of an EGC was evaluated with regard to tumor size,invasion depth,gastric segments,histological type and gross morphology using univariate and multivariate analysis.RESULTS:The respective sensitivities and specificities [reviewer 1:blinded,20%(22/110) and 98%(215/220);unblinded,27%(30/110) and 100%(219/220)/reviewer 2:blinded,19%(21/110) and 98%(216/220);unblinded,25%(27/110) and 98%(215/220)] were not significantly different.Although intraobserver agreements were good(weighted κ = 0.677 and 0.666),interobserver agreements were fair(blinded,0.371) or moderate(unblinded,0.558).For both univariate and multivariate analyses,the tumor size and invasion depth were statistically significant factors affecting visibility.CONCLUSION:The diagnostic performance of hydrostomach CT to detect an EGC was not significantly different between blinded and unblinded analysis.The tumor size and invasion depth were independent factors for visibility.
文摘As a new affective variable in the field of L2 （Second Language） Acquisition, the study of WTC （Willingness to Communicate） has attracted widespread attention since the 1990s, which is not only an effective way to promote language learning but also an important language target itself. Based on the data got from the questionnaire, the present study intends to explore the level, gender difference, correlation with academic .performance, and influencing factors of English majors＇ WTC inside classroom using both quantitative and qualitative research method. The results reveal that English majors＇ WTC inside classroom is comparatively high; there is no significant gender difference in English majors＇ WTC inside classroom, and there is significant positive correlation between WTC inside classroom and academic achievement; furthermore, language capacity, language anxiety, and communicative atmosphere are the main influencing factors
文摘On the basis of an analysis of data from the Chinese Social Survey(CSS)2015,and with male social participation as the reference,we undertook an empirical study of Chinese women’s current social participation and the factors affecting it along the two dimensions of“marriage and family life”and“employment and income status,”as well as the basic characteristics of individuals.Our findings show that in general women display a lower level of social participation than men.In terms of type of social participation,women are more likely to take part in policy-supported activities or serve as volunteers for public interest activities but less likely to participate in the activities of particular“action organizations”or the expression of opinion.Women’s social participation is affected by many factors,including basic individual characteristics,marital status and family life,and employment and income status.A further gender comparison finds that female social participation tends to be more affected by marriage and family life,whereas male social participation is more closely related to employment and income status.We conclude that although more Chinese women have stepped out of the bonds of“home and family,”their social participation“outside the family”is family-bound in a way that is quite different that of men.Hence if we are to pursue gender equality at the level of social participation,it remains necessary to give women greater assurances in terms of marriage and family life by encouraging the realization of their self-worth and facilitating their social development,so as to coordinate and alleviate the double pressures of family and work,thus making women’s social participation an important force and enhancing their all-round development.
