BEHAVIOR ANALYSIS OF CANTILEVER ARCHED RETAINING STRUCTURES IN FOUNDATION PITS     

张仪萍  张土乔 《Journal of Zhejiang University. Science. B》2001,(3)

ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅａｒｃｈｅｄｒｅｔａｉｎｉｎｇｓｔｒｕｃｔｕｒｅ ,ａｎｅｗｔｙｐｅｏｆｒｅｔａｉｎｉｎｇｓｔｒｕｃｔｕｒｅｉｎｆｏｕｎｄａｔｉｏｎｐｉｔｓ(Ｃａｉｅｔａｌ.,1 992 ) ,ｈａｓｍａｎｙｖｉｒｔｕｅｓｓｕｃｈａｓｍｏｒｅｒｅａｓｏｎ ａｂｌｅｓｔｒｕｃｔｕｒｅｓｈａｐｅ ,ｓｍａｌｌｅｒｄｅｆｏｒｍａｔｉｏｎ ,ｌｏｗｅｒｃｏｓｔ,ａｎｄｓｏｏｎ .Ｂｕｔｉｔｈａｓｎｏｔｏｆｔｅｎｂｅｅｎｕｓｅｄｉｎｅｎｇｉｎｅｅｒｉｎｇｂｅｃａｕｓｅｉｔｓａｎａｌｙｓｉｓｍｅｔｈｏｄｉｓｎｏｔｒ…  相似文献   

Longitudinal trends in networks of university-industry-government relations in South Korea: The role of programmatic incentives   总被引：1，自引：0，他引：1  

Han Woo Park  Loet Leydesdorff 《Research Policy》2010,39(5):640-649

This study examines the longitudinal trend of systemness in networked research relations in South Korea using a triple helix (TH) indicator of university-industry-government (UIG) relations. The data were harvested from the Science Citation Index (SCI) and its counterparts in the social sciences (SSCI) and the arts and humanities (A&HCI). The total number of Korean SCI publications has grown rapidly since 1965. However, the TH indicator shows that the network dynamics have varied considerably according to the research policies of the national government. The collaboration patterns, as measured by co-authorship relations in the SCI noticeably increased, with some variation, from the mid-1970s to the mid-1990s. However, inter-institutional collaboration in the first decade of the 21st century was negatively influenced by the new national science and technology (S&T) research policies that evaluated domestic scientists and research groups based on their international publication numbers rather than on the level of cooperation among academic, private, and public domains. The results reveal that Korea has failed to boost its national research capacity by neglecting the network effects in science, technology, and industry.  相似文献   

Post-traumatic stress symptom development as a function of changing witnessing in-home violence and changing peer relationship quality: Evaluating protective effects of peer relationship quality     

《Child abuse & neglect》2018

In the present study, witnessing in-home violence and peer relationship quality are evaluated as to their relative impact on Post Traumatic Stress (PTS) symptoms among children aged 8 to 17 investigated by child protective services (CPS) for maltreatment exposure. The sample included 2151 children from the National Survey of Child and Adolescent Well-Being II (NSCAW II). Linear growth models were estimated to assess associations between changes in PTS symptoms, witnessing in-home violence, and peer relationship quality over time. Greater frequency of witnessing in-home violence at baseline (i.e. wave 1) was associated with higher baseline PTS symptoms (β = 0.44). Increases in witnessing in-home violence frequency over time (average annual change across three years) had a strong association with increases in PTS symptoms over time (β = 0.88). Baseline peer relationship quality was associated with fewer PTS symptoms at baseline (β = −0.45). Increases in peer relationship quality over time were strongly associated with declines in PTS symptoms over time (β = −0.68). Peer relationship quality at baseline did not moderate baseline or over time associations between witnessing in-home violence and PTS symptoms. The average decline in PTS symptoms due to decreases in witnessing in-home violence and increases in peer relationship quality was 0.51 and 0.65 standard deviations respectively, over the three-year study period. Reducing chronic witnessing in-home violence and promoting the development of healthy social relationships with peers are critical for PTS symptom recovery.  相似文献   

Tracking Club Sport Participation From Childhood to Early Adulthood     

Rosalina Richards  Sheila Williams  Richie Poulton  Anthony I. Reeder 《Research quarterly for exercise and sport》2013,84(5):413-419

This study examined the strength of tracking sport participation from childhood to early adulthood among the Dunedin Multidisciplinary Health and Development Study cohort. Participation in sport, dance, or gymnastics as part of a club or group (outside of school) was assessed at ages 7, 9, 15, 18, and 21 years. In addition to the traditionally used correlation coefficients, summary statistics (intraclass correlations; ICC) from random effect models and stability coefficients from generalized estimating equations (GEE) were calculated using all the longitudinal data and controlling for the influence of covariates on tracking strength. Correlation coefficients revealed statistically significant tracking of club sport participation (7–21 years) at low levels (r = .07–0.28). The ICC summary statistic (0.23) was consistent with this, while the GEE suggested moderate tracking (0.59). The results of this study suggest that encouraging sport participation during childhood and adolescence may result in a modest increase in the likelihood of participation later in life. However, the substantial movement into and out of sport participation observed here and in other studies cautions against relying solely on sport promotion among youth as a strategy to promote lifelong participation.  相似文献   

Do peer relationships mediate the association between children’s facial emotion recognition ability and their academic attainment? Findings from the ALSPAC study     

《Contemporary educational psychology》2021

We examined whether children’s facial emotion recognition ability predicted their academic attainment over time, and whether peer relationships mediated that association. A secondary aim was to test whether the putative causal pathways would be significantly different for boys and girls. The model was tested using data from The Avon Longitudinal Study of Parents and Children (ALSPAC), a prospective longitudinal cohort population. Facial emotion recognition ability was assessed using the Diagnostic Assessment of Non-Verbal Accuracy (DANVA) at age 8.5 years while academic attainment was measured using data on UK Key Stage 4 (General Certificate of Secondary Education) at 16 years (outcome). The teacher’s version of the Strengths and Difficulties Questionnaire was used to measure children’s peer relationship problems at 10–11 years (mediator). We adjusted for area-level socio-economic status and child’s early academic attainment, and examined whether mediation was moderated by sex. The results showed that low facial emotion recognition ability in childhood was associated with low academic attainment at age 16 years. There was evidence of mediation via peer problems, with an estimated 19% of the total effect mediated by errors in emotion recognition. Further analyses showed that there was no difference in mediation for boys versus girls. The findings suggest that children’s facial emotion recognition ability and peer relationships should be potential targets for programmes that aim to improve children’s educational attainment and their social and emotional competence.  相似文献   

彩超与TCD联合检查头臂型大动脉炎的价值     

佘亚鹏  赵新民 《河北北方学院学报(医学版)》2006,23(5):21-24

目的：探讨经颅多普勒与彩色多普勒超声联合检查头臂型大动脉炎的价值。方法：应用彩超和TCD检查7例头臂型大动脉炎患者的颅内和颅外动脉．分析二维及血流动力学指标。结果：头臂型大动脉炎病变多位于颅外动脉起始段或近心端（84％）；颅外段动脉狭窄程度与颅内动脉流速呈大致负相关；结论：彩超与TCD联合检查头臂型大动脉炎，对于了解动脉炎所致血管狭窄的分布情况及分析颅外动脉狭窄或闭塞对颅内循环的影响具有重要诊断价值。  相似文献   

Children's school readiness in the ECLS-K: Predictions to academic, health, and social outcomes in first grade     

Elizabeth Hair  Tamara Halle  Elizabeth Terry-Humen  Bridget Lavelle  Julia Calkins 《Early childhood research quarterly》2006,21(4):431-454

Two studies examine patterns of school readiness in children at school entry and how these patterns predict first-grade outcomes in a nationally representative sample of first-time kindergartners from the Early Childhood Longitudinal Study—Kindergarten Class of 1998–1999 (N = 17,219). In Study 1, cluster analyses revealed four profiles at kindergarten entry: comprehensive positive development (30%), social/emotional and health strengths (34%), social/emotional risk (13%), and health risk (22.5% of the sample). Study 2 results suggested that children with one of the two “risk” profiles were more likely to be from families with multiple socioeconomic disadvantages. In addition, all four profiles differentially predicted academic and social adjustment in early elementary school. Children with a risk profile performed the worst on all outcomes; children with a comprehensive positive development profile performed the best. The authors discuss the need for early identification of children who may be at risk for entering school with few school readiness strengths.  相似文献   

Precursors of metamemory in young children: the role of theory of mind and metacognitive vocabulary   总被引：1，自引：0，他引：1  

Kathrin Lockl  Wolfgang Schneider 《Metacognition and Learning》2006,1(1):15-31

This paper describes findings of a longitudinal study that was carried out to examine relationships among different aspects of young children's cognitive development, namely, theory of mind, metacognitive vocabulary, and metamemory, which seem theoretically connected but so far have not been studied simultaneously. In total, 174 children were included in the present analyses who were about 4;6 years of age at the first measurement point. Children were tested at four time points, separated by a testing interval of approximately half a year. At the first time of testing, children completed a set of theory of mind tasks. At each of the following measurement points, measures of metacognitive vocabulary and general vocabulary as well as metamemory were given. Overall, the findings show that theory of mind performance assessed at the age of 4;6 predicts metacognitive knowledge assessed about one and a half years later. Furthermore, they point to a reciprocal relationship between metacognitive vocabulary and metamemory in that comprehension of metacognitive vocabulary predicted later metamemory and, conversely, metamemory significantly predicted later comprehension of metacognitive verbs. This research was supported by a grant from the German Research Foundation (SCHN 315 /20–7) to the German Research Group on Cognitive Development.  相似文献   

Already elsewhere – A study of (skilled) teachers' choice to leave teaching     

《Teaching and Teacher Education》2016

The article presents findings from a longitudinal study (1993–2014) examining how ex-teachers, who were perceived as “skilled” during teacher training, describe their paths out of the profession and discussing the possibility of retaining or re-recruiting teachers in - or back to - the occupation. The result emphasizes teacher attrition as a process related to identity-making within the interrelation between opportunity structures and individuals' frames of reference. Findings indicate that leavers with broader frames of references and images of themselves not attuned to apprehended professional identity are more likely to leave the profession.  相似文献   

Pathways from parental stimulation of children’s curiosity to high school science course accomplishments and science career interest and skill     

Adele Eskeles Gottfried  Kathleen Suzanne Johnson Preston  Allen W. Gottfried  Pamella H. Oliver  Danielle E. Delany  Sirena M. Ibrahim 《International Journal of Science Education》2016,38(12):1972-1995

Curiosity is fundamental to scientific inquiry and pursuance. Parents are important in encouraging children’s involvement in science. This longitudinal study examined pathways from parental stimulation of children’s curiosity per se to their science acquisition (SA). A latent variable of SA was indicated by the inter-related variables of high school science course accomplishments, career interest, and skill. A conceptual model investigated parental stimulation of children’s curiosity as related to SA via science intrinsic motivation and science achievement. The Fullerton Longitudinal Study provided data spanning school entry through high school (N?=?118). Parental stimulation of curiosity at age 8 years comprised exposing children to new experiences, promoting curiosity, encouraging asking questions, and taking children to a museum. Intrinsic motivation was measured at ages 9, 10, and 13 years, and achievement at ages 9, 10, and 11 years. Structural equation modelling was used for analyses. Controlling for socio-economic status, parental stimulation of curiosity bore positive and significant relations to science intrinsic motivation and achievement, which in turn related to SA. Gender neither related to stimulation of curiosity nor contributed to the model. Findings highlight the importance of parental stimulation of children’s curiosity in facilitating trajectories into science, and relevance to science education is discussed.  相似文献