排序方式： 共有17条查询结果，搜索用时 406 毫秒
1.
Ernst A. Hany 《High Ability Studies》1993,4(2):196-211
Previous investigations have shown that teachers have a clear idea of the typical characteristics of gifted pupils. The present study investigates whether these features are combined linearly or whether they are used to activate pupil exemplars or prototypes stored in the longterm memory, when teachers are set the task of distinguishing gifted from above average pupils. A group of 37 teachers at grammar schools in the German federal state of Baden‐Württemberg, who had all had adequate experience with gifted children, answered written questions. Their judgement behaviour was modelled with the help of discriminant analyses in which a number of different predictor sets were included. These analyses revealed that both individual features and prototypical patterns of features seem to be used simultaneously. In contrast, personal experience with individual highly gifted pupils seemed not to play any role, although the method used could be expected to conceal the effects of personal experience. 相似文献
2.
We introduce a new model for contact angle saturation phenomenon in electrowetting on dielectric systems. This new model attributes contact angle saturation to repulsion between trapped charges on the cap and base surfaces of the droplet in the vicinity of the three-phase contact line, which prevents these surfaces from converging during contact angle reduction. This repulsion-based saturation is similar to repulsion between charges accumulated on the surfaces of conducting droplets which causes the well known Coulombic fission and Taylor cone formation phenomena. In our model, both the droplet and dielectric coating were treated as lossy dielectric media (i.e., having finite electrical conductivities and permittivities) contrary to the more common assumption of a perfectly conducting droplet and perfectly insulating dielectric. We used theoretical analysis and numerical simulations to find actual charge distribution on droplet surface, calculate repulsion energy, and minimize energy of the total system as a function of droplet contact angle. Resulting saturation curves were in good agreement with previously reported experimental results. We used this proposed model to predict effect of changing liquid properties, such as electrical conductivity, and system parameters, such as thickness of the dielectric layer, on the saturation angle, which also matched experimental results. 相似文献
3.
Briere J Johnson K Bissada A Damon L Crouch J Gil E Hanson R Ernst V 《Child abuse & neglect》2001,25(8):1001-1014
OBJECTIVE: The Trauma Symptom Checklist for Young Children (TSCYC) is a 90-item caretaker-report measure of children's trauma- and abuse-related symptomatology. It contains two reporter validity scales and eight clinical scales [Post-traumatic Stress-Intrusion (PTS-I), Post-traumatic Stress-Avoidance (PTS-AV), Post-traumatic Stress-Arousal (PTS-AR), Post-traumatic Stress-Total (PTS-TOT), Sexual Concerns (SC), Dissociation (DIS), Anxiety (ANX), Depression (DEP), and Anger/Aggression (ANG)], as well as an item assessing hours per week of caretaker contact with the child. This paper introduces the TSCYC and describes its psychometric properties in a multisite validity study. METHOD: A total of 219 TSCYCs administered by six clinician/researchers across the United States were analyzed for scale reliability and association with several types of childhood maltreatment. RESULTS: The TSCYC clinical scales have good reliability and are associated with exposure to childhood sexual abuse, physical abuse, and witnessing domestic violence. The PTS-I, PTS-AV, PTS-AR, and PTS-TOT scales were most predictive, followed by SC in the case of sexual abuse and DIS in the case of physical abuse. There were a small number of age, sex, and race effects on TSCYC scores. CONCLUSIONS: The TSCYC appears to have reasonable psychometric characteristics, and correlates as expected with various types of trauma exposure. Subject to continued validation and the development of general population norms, its use as a clinical measure is supported. 相似文献
4.
Lori Wong Vincent Beltran Chen Yang Shin Maekawa Sara Lardinois Hany Hussein 《文物保护研究》2018,63(5):307-315
ABSTRACTThe tomb of Tutankhamen in the Valley of the Kings, Egypt, one of the major attractions of the World Heritage Site of Ancient Thebes and its Necropolis on the West Bank of modern day Luxor, is today a destination for mass tourism. Visitors to the tomb increase relative humidity, elevate carbon dioxide levels, and encourage natural ventilation which facilitates entry of dust into the tomb. These conditions negatively impact the wall paintings and remaining artifacts in the tomb and create an uncomfortable environment for visitors. The deposition of dust inside the tomb collects on uneven wall painting surfaces, obscures their legibility and necessitates cycles of cleaning, which in turn leads to further damage. Developing environmental management strategies in the tomb to counter the effects of visitors and mitigate dust entry is an important component of the collaborative project between the Getty Conservation Institute (GCI) and Egypt’s Ministry of Antiquities (MoA) to conserve the tomb. These included implementation of a filtered-air supply and exhaust ventilation system to stabilize the interior microclimate and reduce dust in order to improve visitor comfort and contribute to the long-term preservation of the tomb. 相似文献
5.
吴雪松 《职教通讯(江苏技术师范学院学报)》2006,12(3)
非英语专业学生口语能力有待提高.如何提高学生的口语水平始终是英语教学中的难点和重点.传统教学模式下的大学英语教学束缚了学生学习潜能的发挥.大学英语教学模式的改革可以考虑采用"任务型教学法".任务型教学模式是20年来交际教学思想的一种发展形态,它把语言运用的基本理念转化为具有实践意义的课堂教学模式.本研究将任务型教学理念应用于非英语专业英语口语教学之中,通过对任务型教学理论的定义、特征和理论基础等方面的阐析,提出任务型口语教学的总体设计思路和具体教学改革措施. 相似文献
6.
The present study aimed to comprehensively examine social cognition processes in children with and without learning disabilities (LD), focusing on social information processing (SIP) and complex emotional understanding capabilities such as understanding complex, mixed, and hidden emotions. Participants were 50 children with LD (age range 9.4-12.7; 35 boys, 15 girls) and 50 children without LD matched on grade, age, and gender. Children analyzed 4 social vignettes using Dodge's SIP model and completed 2 emotional recognition tasks (pictures and stories) and 4 emotional knowledge tasks, such as providing definitions and examples for 5 emotions (e.g., loneliness, pride, embarrassment). Study results demonstrated that children with LD had major difficulties in SIP processes and consistent difficulties with the different tasks in the understanding of complex emotions and in higher emotional understanding capabilities, such as understanding that 2 conflicting emotions (love and hate) can be simultaneously experienced. We discuss the implications of such difficulties for the understanding of social competence in children with LD as well as their implications for social skills intervention. 相似文献
7.
Khalafalla MM Daffalla HM Abdellatef E Agabna E El-Shemy HA 《Journal of Zhejiang University. Science. B》2011,12(4):303-312
This report describes in vitro micropropagation of Boscia senegalensis, so-called famine foods, that helped the people in Darfur and Kordofan, Sudan survive during the 1984–1985 famine. Four types
of explants prepared from green mature zygotic embryos were cultured on Murashige and Skoog (MS) medium augmented with 1–5
mg/L 6-benzyladenine (BA). The highest number of shoots per explant (14.3±0.9) was achieved on MS medium supplemented with
3 mg/L BA, while the highest shoot length [(3.5±0.4) cm] was obtained with 1 mg/L BA. The shoot cluster, when subcultured
to its same medium, significantly increased the rate of shoot multiplication by the end of the third subculture. The maximum
mean number of shoots per explant (86.5±3.6) was produced after three multiplication cycles on 3 mg/L BA-supplemented medium.
In vitro induced shoots were excised and rooted on half strength MS medium fortified with 0.25 mg/L indole-3-butyric acid
(IBA) to obtain complete plantlets. B. senegalensis-regenerated plantlets obtained in vitro for the first time, were hardened and 95% survived under greenhouse conditions. 相似文献
8.
Dennis Bachmann Katarina Grolinger Hany ElYamany Wilson Higashino Miriam Capretz Majid Fekri Bala Gopalakrishnan 《Information Retrieval》2018,21(6):541-564
Recommender systems have dramatically changed the way we consume content. Internet applications rely on these systems to help users navigate among the ever-increasing number of choices available. However, most current systems ignore the fact that user preferences can change according to context, resulting in recommendations that do not fit user interests. This research addresses these issues by proposing the \(({ CF})^2\) architecture, which uses local learning techniques to embed contextual awareness into collaborative filtering models. The proposed architecture is demonstrated on two large-scale case studies involving over 130 million and over 7 million unique samples, respectively. Results show that contextual models trained with a small fraction of the data provided similar accuracy to collaborative filtering models trained with the complete dataset. Moreover, the impact of taking into account context in real-world datasets has been demonstrated by higher accuracy of context-based models in comparison to random selection models. 相似文献
9.
Research on subjective misconceptions in physics has not systematically investigated interindividual differences or the impact of formal physics instruction. In this empirical study, two sets of more abstract and of more familiar kinematics tasks were given to a sample (N=201) consisting of two cohorts of German secondary school students (one having received 18 months of physics instruction and the other none), balanced according to level of intelligence (high versus average) and sex. The answers obtained in diagram form were analysed for correct versus incorrect solutions and for subjective misconceptions in physics. Quantitative and qualitative differences in the answers were found between male and female students as well as between students of high versus average intelligence, particularly for the abstract tasks. From the cross‐sectional analysis, it was concluded that only boys profited from physics instruction in school Considering these important subgroup differences, consequences for special schooling for gifted and for female students are discussed
10.
ABSTRACT The humanist and critical principles of educational gerontology attribute different goals to education in later life. Self-Actualization is the goal of humanist educational gerontology, while empowerment, emancipation, and social change are the goals of critical educational gerontology. Liberal arts education is dominant in later-life learning. Both the humanist and the critical philosophies of learning in older age claim that this type of education is not empowering. Empowerment is a contested concept that has been defined through a set of constructs ranging from psychological capacities to attitudes and behaviors. In terms of capital, empowerment translates into gains in identity and social capital, operationalized in the variables agency and social and civic participation, respectively. The present study investigated the empowering potential of liberal arts courses using the BeLL survey data of 7,338 adult learners. Through a series of ANOVAs and a regression model, we found that age, gender, educational attainment, the number of courses, and changes in agency are significantly associated with changes in social and civic participation. We concluded that liberal arts education does empower adult learners, especially older adults, women, and individuals with lower educational attainment. Given that goal-related claims in the principles of educational gerontology have been empirically challenged, we recommend a new statement of principles that takes into account the latest developments in the field, as well as learners’ agential capacities and the structural inequalities they face. 相似文献