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11.
Grisham W Schottler NA McCauley LM Pham AP Ruiz ML Fong MC Cui X 《CBE life sciences education》2011,10(2):222-230
Zebra finch song behavior is sexually dimorphic: males sing and females do not. The neural system underlying this behavior is sexually dimorphic, and this sex difference is easy to quantify. During development, the zebra finch song system can be altered by steroid hormones, specifically estradiol, which actually masculinizes it. Because of the ease of quantification and experimental manipulation, the zebra finch song system has great potential for use in undergraduate labs. Unfortunately, the underlying costs prohibit use of this system in undergraduate labs. Further, the time required to perform a developmental study renders such undertakings unrealistic within a single academic term. We have overcome these barriers by creating digital tools, including an image library of song nuclei from zebra finch brains. Students using this library replicate and extend a published experiment examining the dose of estradiol required to masculinize the female zebra finch brain. We have used this library for several terms, and students not only obtain significant experimental results but also make gains in understanding content, experimental controls, and inferential statistics (analysis of variance and post hoc tests). We have provided free access to these digital tools at the following website: http://mdcune.psych.ucla.edu/modules/birdsong. 相似文献
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5‐year‐olds, 7‐year‐olds and 9‐year‐olds were asked to draw three figures, one standing still and facing them, one standing still in profile and one running in profile. Half drew from imagination and half drew from models. The 5‐year‐olds made fewest distinctions in the way they drew the figures, the most notable being the greater spread of the legs of the running figure. With increasing age, more features were used to differentiate the three figures. There was little evidence of 5‐year‐olds adapting their figures in the presence of a model. Only among the older children was there a significant effect of the presence of a model when the 7‐year‐olds and, to a greater extent, the 9‐year‐olds drew their running figure with bent arms and legs and also with more transparencies and partial occlusions. 相似文献
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近来,各种公众媒体的版面充斥着对世界各地著名遗产旅游景点更新改造的报道。文化遗产旅游目的地管理者也承认良好的外部环境在提升旅游者总体满意程度方面发挥着重要作用。阐明了遗产吸引物的自然环境在决定旅游者对景点的态度和未来再次购买意向方面有重要作用.同时影响着他们对亲朋好友的传播意愿。研究表明环境因素在面对顾客塑造永久性的独特品牌形象时可被作为一种差异化工具,并以此创造一种竞争优势。 相似文献
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Terese Stenfors‐Hayes Christopher Griffiths James Ogunleye 《International Journal of Lifelong Education》2013,32(6):625-640
Lifelong learning is recognized as an important tool to reduce social exclusion, but out of the many investigations into the provision of lifelong learning in Europe none has yet sought to examine the specific situation of mental health care service users. This study examines the provision of lifelong learning for this disadvantaged group; it identifies current policies and explores the access to, and nature of, lifelong learning practices for mental health care service users in eight European countries. Data have been collected through a literature and policy review and through questionnaires completed by mental health practitioners in the eight countries. The study found broad compliance amongst the eight countries with the Lisbon policy goals on lifelong learning, but evidence of specific lifelong learning provision for mental health care service users is patchy and sporadic. The study identified the main benefits of, and the barriers to, the participation in lifelong learning for mental health care service users from the viewpoint of mental health professionals and practitioners. The implications for practice were described, and suggestions for actions were made for improving the lifelong learning provision for the target group. 相似文献
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The Daisy Model is a conceptualisation of the way in which a core group of experienced and novice action researchers may work on a range of related mini-projects that contribute to organisational improvement. This model enables the spread of action research from one or two enthusiasts to others in an organisation. It allows for changes in individual commitment and organisational context as the research progresses. Development of this model has occurred since 1995, during several projects related to educational practice in New Zealand polytechnics. In 1997 the model was applied to the collaborative improvement of policies and procedures for recognition of prior learning at two polytechnics. This article describes the model and its application and examines the roles of the facilitator(s) and the types of activities that occur within the central core group and petal mini-project groups of the Daisy 相似文献
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Cara McClain Maureen Vandermaas-Peeler 《Journal of Adventure Education & Outdoor Learning》2016,16(1):31-48
This study examined the influence of spending time outdoors on young children’s physical and socioemotional development. We observed preschoolers’ activities in two naturally provisioned outdoor environments over the course of one year. Eleven preschoolers were videotaped continuously for 16 days at a local river and 9 days at a creek adjacent to the school. In addition to the quantitative analyses of children’s behaviors, a case study of three children’s experiences over the course of the year was conducted. Both the river and the creek settings encouraged a multitude of physical and play behaviors with similar types of affordances, including flat surfaces for running, rocks for climbing and jumping off, and water for exploration and play, but the wilder environment (river) afforded more risk and personal challenges. Observations of children’s motor activities, play and responses to challenging environmental features supported the importance of accumulated experience and social context for the development of confidence in the face of risk, individual exploration and positive social support and engagement with peers. 相似文献