Splicing-site recognition of rice (Oryza sativa L.)DNA sequences by support vector machines     

彭司华  樊龙江  彭小宁  庄树林  杜维  陈良标 《浙江大学学报(A卷英文版)》2003,4(5)

Motivation: It was found that high accuracy splicing-site recognition of rice (Oryza sativa L.) DNA sequence is especially difficult. We described a new method for the splicing-site recognition of rice DNA sequences. Method: Based on the intron in eukaryotic organisms conforming to the principle of GT-AG, we used support vector machines (SVM) to predict the splicing sites. By machine learning, we built a model and used it to test the effect of the test data set of true and pseudo splicing sites. Results: The prediction accuracy we obtained was 87.53% at the true 5' end splicing site and 87.37% at the true 3' end splicing sites. The results suggested that the SVM approach could achieve higher accuracy than the previous approaches.  相似文献   

后浇带造成的临时悬挑构件在施工中的问题     

陶莉 《温州职业技术学院学报》2004,4(1):41-44

在现代建筑施工中，为了解决混凝土收缩、不均匀沉降等问题往往设置了后浇带。而后浇带的设置使得通过此位置的连续梁、板构件变为悬挑构件。施工人员在施工期间如何处理这些构件的问题上常存在着一些误解。本文在总结以往实践经验的基础上，提出了处理这一问题的新的方法和程序。  相似文献   

The Early Literacy Support Programme (ELS) and the blend and clash of national educational policy ideologies in England     

Janet Soler Corresponding author  Alice Paige‐Smith 《Early Years: An International Journal of Research and Development》2005,25(1):43-54

In this article we consider the development of key policy issues in England, related to the area of literacy learning and children who are considered to have difficulties in literacy in their early years. We trace the tensions which have arisen since the 1980s between different policies and practices in these areas. These tensions include pressures to raise standards of literacy and to support children with difficulties, and the establishment of a prescribed curriculum for young children. In particular, we focus on the blend and clash of national educational policy ideals in areas related to literacy and children who have been categorised as having ‘special educational needs’, and how these have influenced the development of the Early Literacy Support Programme (ELS) (DfES, 2001 Department for Education and Skills 2001a Early Literacy Support Programme, materials to support teachers working in partnership with teaching assistants London DfES  [Google Scholar]a; 2001 Department for Education and Skills 2001b Early Literacy Support Programme, session materials for teaching assistants London DfES  [Google Scholar]b). This is a programme set up by the Department for Education and Science in England for children in Year 1, aged 5 to 6 years old.  相似文献   

Communicating Social Support in Computer-mediated Contexts: A Meta-analytic Review of Content Analyses Examining Support Messages Shared Online among Individuals Coping with Illness     

《Communication monographs》2012,79(4):403-430

Research on social support during the past two decades has been marked by a growth in scholarship examining supportive communication in computer-mediated contexts among individuals coping with illness. In an effort to summarize and advance this body of research, a meta-analytic review of content analyses was conducted. Across the 41 content analyses examining social support messages shared in health-related contexts online, informational and emotional support messages were most prevalent. Additionally, the prevalence of particular types of support messages varied based on several stressor dimensions relevant to illness. Nurturant forms of support were more common among content analyses examining health conditions likely to threaten personal relationships as well as among content analyses focusing on health conditions with a greater potential for loss in the form of death. Action-facilitating types of support were more common among content analyses examining more chronic conditions. The findings from this project offer insights about the nuanced ways in which computer-mediated communication is used as a resource for coping with illness.  相似文献   

基于支持向量机的储层参数反演     

朱永才  薛坤林 《茂名学院学报》2012,(1):44-46

支持向量机是基于统计学理论的一种新的数学方法,近几年得到了快速的发展,国内外已将其应用到各个领域。该文应用支持向量回归机的方法,用测井数据、地震属性数据对储集层的储层参数进行了预测,得到了精度较高的储层参数;并通过对实验结果的分析,说明了这种方法的优势。  相似文献   

一种改进的支持向量机及其在图像分割中的应用     

刘琦  赵彦晖 《楚雄师范学院学报》2012,27(3):14-17

支持向量机方法是一种基于统计学理论的机器学习的新方法,它在解决小样本,非线性及高维模式识别中表现出许多特有的优势。目前它主要用于二元分类问题中,而对于其在多类分类应用仍是一个值得研究的问题。在目前存在的各种多类支持向量机分类问题中,一对一方法是一种最符合实际的方法。本文提出了一种改进的支持向量机,并将其应用于图像分割。这种改进的支持向量机它对一对一方法进行了改进,实验表明,支持向量机的方法是一种很有潜力的图像分割技术。  相似文献   

Parents with intellectual disabilities seeking professional parenting support: The role of working alliance,stress and informal support     

《Child abuse & neglect》2014,38(9):1478-1486

Delaying or refraining from seeking advice and support in difficult parenting situations is identified as an important risk factor for child abuse and neglect. This study tested whether the extent of delays in support seeking is associated with working alliance for parents with mild intellectual disabilities (MID) and whether the importance of working alliance may depend on parenting stress and availability of informal support. Delays in support seeking were measured as parental latency (time waited) to approach the support worker. This latency was assessed in the intended response to hypothetical situations (vignettes) and in the reported behavioral response to real life difficult parenting situations from the preceding weeks. Multiple regression analyses were conducted for testing main and interaction effects of predictors on latency for support seeking. Better quality of the working alliance was associated with shorter intended latency to seek support for parents with MID, if parents had little access to informal support. Higher parenting stress predicted a shorter latency for intended support seeking. Parental support seeking intentions were positively associated with support seeking behavior. A good quality of the working alliance might be important to connect needs of parents with MID to resources that professional support can offer, in particular for the most vulnerable parents. Parental reluctance to seek professional support may be the result of a combination of risk and protective factors and is not always a sign of poor working alliance. Implications for risk assessment and support practice are discussed.  相似文献   

Needs assessment in STEM disciplines: reliability,validity and factor structure of the Student Support Needs Scale (SSNS)     

Precious Hardy 《Assessment & Evaluation in Higher Education》2014,39(5):553-562

Retention is a major problem in most colleges and universities. High dropout rates, especially in the STEM disciplines (science, technology, engineering and mathematics), have proved intractable despite the offering of supplemental instruction. A broad model of support systems that includes psychological factors is needed to address retention in STEM fields. The purpose of our study was to develop an instrument to identify the support needs of college students. We adapted the theoretical model of the performance pyramid to create a 48-item measure called the Student Support Needs Scale. We examined the psychometric properties of our scale by subjecting the measure to a principal component analysis, which resulted in a robust 36-item, six-factor solution. Finally, we established the reliability and validity of the resulting instrument. Once student needs have been assessed using our scale, interventions may be tailored to the needs of a minority group, discipline, geographic area and/or institution. This instrument could help university programmes to make informed decisions about resource allocation based on students’ needs.  相似文献   

Communication of social support to sexual harassment victims: Professors’ responses to a student’s narrative of unwanted sexual attention     

Shereen G. Bingham  Karen M. Battey 《Communication Studies》2013,64(2):131-155

University professors are important sources of social support for students who have been sexually harassed. However, research has not investigated how professors communicate with students who seek help in coping with this distressful problem. This study examines the types of social support provided by 96 professors in response to a student’s narrative of unwanted sexual attention, and factors that influence their support. The results show that professors provided the student with more problem solving than emotional support. Consistent with the social support model that was a foundation for the study, the types of support were associated with the sex of the professors and student, and the professors’ tolerance for sexual harassment.  相似文献   

The Effects of Social Support,Depression, and Stress on Drinking Behaviors in a College Student Sample     

Perry M. Pauley  Colin Hesse 《Communication Studies》2013,64(5):493-508

Social support research contends that supportive interactions provide a buffer wherein individuals are protected from increased risk due to negative affect. The present study investigated the relationships between social support and college students' stress, depression, and alcohol use. A total of 54 students completed questionnaires in exchange for extra course credit. Results demonstrated that stress and depression were correlated with one another and that social support was negatively correlated with each of these outcomes. Depression, but not stress, was correlated with increased drinking behavior. Overall, social support was negatively correlated with alcohol consumption; however, depression moderated the effect of social support such that support and alcohol consumption were negatively correlated for participants with higher depression whereas support and alcohol consumption were positively correlated for individuals with lower depression. These findings partially confirm existing theories of alcohol use that hypothesize differences between self-medicating drinkers and social, sensation-seeking drinkers.  相似文献