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Farideh Fekrsanati Stefan Klein Jens Hildenhagen Klaus Dickmann Yiorgos Marakis Aleka Manousaki Vassilis Zafiropulos 《Journal of Cultural Heritage》2001,2(4):187
The application of lasers for the removal of superficial deposits from historic stained glass is a comparatively new field of scientific interest. Experimental studies concerning the behaviour of glass substrates and the corresponding superficial deposits towards different laser wavelengths were carried out. The experiments were performed using wavelengths of λ = 193 nm (ArF-Excimer), 308 nm (XeCl-Excimer), 355 nm (Nd:YAG third harmonic) and 1 064 nm (Nd:YAG fundamental) in comparison to λ = 248 nm (KrF-Excimer). This comparison is due to the fact that the present knowledge is based on the 248 nm wavelength. Specially prepared model glass samples representing the original fragments and samples of organic polymers (formerly used as a protective material for historic stained glasses) were used to study the effects of laser radiation and were subsequently characterised by optical microscopy. 相似文献
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This study compares the effects of three different evaluation conditions on the “continuing motivation” of grade school students in Iran and the U.S. In both cultural groups, the highest continuing motivation was shown by students in a self-evaluation condition followed, in order, by students in the peer comparison and teacher evaluation conditions. While the generalizability of evaluation effects is perhaps the most striking finding, it may he noted that these effects were to some extent modified by individual differences in achieving orientation and sex role. Also of interest were the effects of performance level on continuing motivation, In this case, higher levels of performance on the task were generally followed by greater continuing motivation. The theoretical implications of this and other findings were discussed in terms of Current achievement theory. 相似文献
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This study focuses on age-related changes in moral and achievement judgments as they may be modified by sociocultural factors. In this study 1,485 male and female Iranian children/students of diverse social background and ranging in age from 4–18 served as subjects. Following a previously established procedure, subjects were asked to evaluate (reward/punish) the moral and achievement behavior of a story protagonist under conditions which varied systematically in terms of the protagonist's ability to perform a moral or achievement act, his/her good Intentions and the Outcome. A response surface analysis was employed in identifying the separate and interactive affects of social, cultural, and cognitive developmental factors. Age-related patterns were subject to important modifications by sociocultural variables, especially in the case of moral judgments. It is of special interest that in this still fairly traditional Islamic society, sex of subject appeared as a major modifying variable. 相似文献
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Farideh Salili 《教育心理学》1996,16(3):271-279
This study investigated age, sex and cultural differences in achievement motivation. Subjects were a total of 764 male and female British high school and Chinese students aged 13‐55. The thematic Apperception Test (TAT) was administered to measure need for achievement (nAch). Results revealed that Chinese high school students had significantly higher nAch scores than their British counterparts. They also had significantly higher scores than the two older groups of Chinese students. Female subjects of both cultures had higher scores than males, although this difference was significant for British female subjects only. The results were discussed in terms of sociocultural and situational factors. 相似文献
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Measurement of achievement attribution: A review of instigation methods,question contents,and measurement formats 总被引：3，自引：0，他引：3
Various methods of achievement attribution measurement are compared with regard to the construction of the achievement event and the measurement of the attributions elicited. The method of instigation and the content of the instruments depend greatly on whether situational or dispositional (individual differences) factors are emphasized. It is suggested that natural events, particularly those with pronounced effects, generate actual affective reactions and direct consequences and are particularly useful for studies of situational factors in attributions. On the other hand, hypothetical multiple-event measures are generally employed for studies of individual differences in attributions. The present review shows that questions on specific causes are more popular than those on attribution dimensions. Researchers should be cautious, however, because the dimensional meaning of these causes may vary across different cultures, age groups, or achievement settings. Different question formats and scoring methods also are compared. It is concluded that different methods have their own strengths and weaknesses and that researchers should select the one that best serves their purpose. 相似文献
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Examination Result Attribution,Expectancy and Achievement Goals among Chinese Students in Hong Kong∗
The structure of Chinese primary school students’ causal attributions for actual examination results was examined. A factor analysis of the attributions revealed dimensions which supported Weiner's classification. Age‐related differences as well as interrelationships among perceived attainment, expectancy of success, causal attributions and achievement goals were also explored. Results showed that older students had lower but more accurate perceived attainment than younger students. They also attributed more to internal causes and study at home, and they had stronger learning goals. Results also showed that leaming‐oriented students attributed more to internal causes and study at home but less to home conditions, while performance‐oriented students attributed more to uncontrollable causes. Results were explained and discussed with reference to the socialisation patterns in the Chinese culture.
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The research explored the effect of teachers’ evaluative feedback on students’ perception of ability. The subjects were 758 Chinese students from elementary schools, high schools, and a university in Hong Kong. Subjects rated ability and effort of two hypothetical students who achieved identical results (success or failure) in a mathematics test but received different feedback (praise, blame, or neutral feedback) from the teacher. They also rated the teacher's perception of their own and their friends’ ability and effort in a similar situation after a real mathematics test. The results of this study support previous findings which indicate that ability perception is influenced by cultural and contextual variables. Contrary to the findings with Western students, ability and effort were positively correlated. The importance of effort among the Chinese students appears to mitigate the effects of teachers’ feedback on students’ ability. Age‐related differences were also observed. The results are discussed in terms of sociocultural background of the subjects. 相似文献
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The present study explored the link between teachers’ perceptions of students’ problem behaviours, their emotional reactions, and their likelihood to help such students. One hundred and thirty five teachers responded to four written vignettes which depicted students with either aggressive or withdrawal behaviours. The effects of teacher gender and the nature of problem behaviours in male and female students on teacher's willingness to help were also explored. Results showed that teachers were least sympathetic and most angry with aggressive students. These students were more likely to be held responsible for their behaviours. Teachers were, however, willing to help all students regardless of their problems. Female teachers were more willing to help students than male teachers. The results supported the “empathy‐altruism” hypothesis with regard to helping behaviour. The influence of role expectation of teachers in the context of Chinese culture was also discussed. 相似文献