排序方式: 共有124条查询结果,搜索用时 15 毫秒
31.
Dmitri V. Louzguine-Luzgin Alain Reza Yavari Guoqiang Xie Shantanu Madge Song Li Junji Saida 《Philosophical Magazine Letters》2013,93(2):139-148
This paper presents a study of the deformation behaviour of a glassy phase in two Zr-based alloys, Zr65Ni10Cu5Al7.5Pd12.5 and Zr65Al7.5Ni10Pd17.5, performed in situ in a transmission electron microscope. In contrast to the case of shear localisation and formation of 10–20 nm thick shear bands in deformed bulk glassy samples studied earlier, it is found that in thin (electron-transparent) samples the glassy phase in front of a crack deforms more homogeneously and no nanocrystallisation takes place. The reasons for such behaviour are discussed. According to the observed results, one can conclude that the studied metallic glasses can be intrinsically ductile in submicrometre-sized volumes. 相似文献
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Throughout history, black churches have played a significant role in the spiritual, social, and political life of African-American communities. Yet attitudes about morality surrounding HIV/AIDS have hampered unconditional involvement of black churches in dealing with the disease. Although the black church's attitudes toward the disease have evolved in the last 25 years, research suggests that a lingering negative disposition still exists. This study examines the current status of church-based HIV/AIDS education and support services provided by the black churches in the Houston area. The data were drawn from 319 church members and 12 ministers, using two separate questioners. Members and ministers were surveyed on a variety of issues related to HIV/AIDS education and support services, and their attitudes and behavior towards the disease. The results seem to confirm the much needed involvement of the black church in providing education and support in dealing with the disease. 相似文献
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Reza Pishghadam Purya Baghaei Zahra Seyednozadi 《International Journal of Testing》2017,17(2):127-140
This article attempts to present emotioncy as a potential source of test bias to inform the analysis of test item performance. Emotioncy is defined as a hierarchy, ranging from exvolvement (auditory, visual, and kinesthetic) to involvement (inner and arch), to emphasize the emotions evoked by the senses. This study hypothesizes that when individuals have high levels of emotioncy for specific words, their test performance may systematically change, resulting in test bias. To this end, 355 individuals were asked to take a 40-item vocabulary test along with the emotioncy scale. Mixed Rasch model was employed to flag differential item functioning items. Results illustrated that the test takers with high emotioncy toward specific words outperformed the ones in the low-emotioncy group, characterizing emotioncy as a potential source of test bias. 相似文献
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Mohammad Reza Baneshi Ali Akbar Haghdoost Farzaneh Zolala Nouzar Nakhaee Maryam Jalali Reza Tabrizi Maryam Akbari 《Journal of religion and health》2017,56(2):428-436
This study aimed to assess using tree-based models the impact of different dimensions of religion and other risk factors on suicide attempts in the Islamic Republic of Iran. Three hundred patients who attempted suicide and 300 age- and sex-matched patient attendants with other types of disease who referred to Kerman Afzalipour Hospital were recruited for this study following a convenience sampling. Religiosity was assessed by the Duke University Religion Index. A tree-based model was constructed using the Gini Index as the homogeneity criterion. A complementary discrimination analysis was also applied. Variables contributing to the construction of the tree were stressful life events, mental disorder, family support, and religious belief. Strong religious belief was a protective factor for those with a low number of stressful life events and those with a high mental disorder score; 72 % of those who formed these two groups had not attempted suicide. Moreover, 63 % of those with a high number of stressful life events, strong family support, strong problem-solving skills, and a low mental disorder score were less likely to attempt suicide. The significance of four other variables, GHQ, problem-coping skills, friend support, and neuroticism, was revealed in the discrimination analysis. Religious beliefs seem to be an independent factor that can predict risk for suicidal behavior. Based on the decision tree, religious beliefs among people with a high number of stressful life events might not be a dissuading factor. Such subjects need more family support and problem-solving skills. 相似文献
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Razieh Sheikholeslami Ali Reza Sharif Ardani Meraj Derakhshan 《Adultspan: Theory Research & Practice》2019,18(2):58-69
Using a questionnaire adapted from Arnett and Padilla‐Walker (2015), the authors examined the concept of adulthood among 366 Iranian emerging adults ages 17 to 29. Results suggested that the concept and criteria of adulthood are influenced by the cultural context. Implications for practice and recommendations for future research are discussed. 相似文献
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Kormi-Nouri R Shojaei RS Moniri S Gholami AR Moradi AR Akbari-Zardkhaneh S Nilsson LG 《Scandinavian journal of psychology》2008,49(2):93-109
Kormi-Nouri, Moniri and Nilsson (2003) demonstrated that Swedish-Persian bilingual children recalled at a higher level than Swedish monolingual children, when they were tested using Swedish materials. The present study was designed to examine the bilingual advantage of children who use different languages in their everyday life but have the same cultural background and live in their communities in the same way as monolingual children. In four experiments, 488 monolingual and bilingual children were compared with regard to episodic and semantic memory tasks. In experiments 1 and 2 there were 144 boys and 144 girls in three school groups (aged 9-10 years, 13-14 years and 16-17 years) and in three language groups (Persian monolingual, Turkish-Persian bilingual, and Kurdish-Persian bilingual). In experiments 3 and 4, there were 200 male students in two school groups (aged 9-10 years and 16-17 years) and in two language groups (Persian monolingual and Turkish-Persian bilingual). In the episodic memory task, children learned sentences (experiments 1-3) and words (Experiment 4). Letter and category fluency tests were used as measures of semantic memory. To change cognitive demands in memory tasks, in Experiment 1, the integration of nouns and verbs within sentences was manipulated by the level of association between verb and noun in each sentence. At retrieval, a recognition test was used. In experiments 2 and 3, the organization between sentences was manipulated at encoding in Experiment 2 and at both encoding and retrieval in Experiment 3 through the use of categories among the objects. At retrieval, free recall or cued recall tests were employed. In Experiment 4, the bilingual children were tested with regard to both their first and their second language. In all four experiments, a positive effect of bilingualism was found on episodic and semantic memory tasks; the effect was more pronounced for older than younger children. The bilingual advantage was not affected by changing cognitive demands or by using first/second language in memory tasks. The present findings support the cross-language interactivity hypothesis of bilingual advantage. 相似文献
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In two experiments, the influence of incidental retrieval processes on explicit test performance was tested. In Experiment 1, subjects studied words under four conditions (auditory-shallow, auditory-deep, visual-shallow, and visual-deep). One group of subjects received auditory and visual word-fragment completion; another group received auditory and visual word-fragment cued recall. Results indicated that changes in sensory modality between study and test reduced both recall and priming performances; levels of processing significantly affected only the cued recall test. These results indicated that incidental retrieval processes might affect explicit test performance when retrieval cues are data limited. Experiment 2 supported this conclusion by showing an effect of matching study and test modalities on explicit test performance with fragment but not with copy cues. Taken together, these results support Roediger and McDermott’s (1993) suggestion that explicit test performance is influenced by incidental retrieval processes when data-limited retrieval cues are used. 相似文献
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Mahmoodi Mohammad Hadi Sheykholmoluki Hamidreza Zoghipaydar Mohammad Reza Shahsavari Saeed 《Journal of psycholinguistic research》2022,51(4):683-706
Journal of Psycholinguistic Research - To contribute to a better understanding of first language (L1) and second language (L2) sentence processing, this study investigated the relationship between... 相似文献