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81.
We present a diagnostic question cluster (DQC) that assesses undergraduates' thinking about photosynthesis. This assessment tool is not designed to identify individual misconceptions. Rather, it is focused on students' abilities to apply basic concepts about photosynthesis by reasoning with a coordinated set of practices based on a few scientific principles: conservation of matter, conservation of energy, and the hierarchical nature of biological systems. Data on students' responses to the cluster items and uses of some of the questions in multiple-choice, multiple-true/false, and essay formats are compared. A cross-over study indicates that the multiple-true/false format shows promise as a machine-gradable format that identifies students who have a mixture of accurate and inaccurate ideas. In addition, interviews with students about their choices on three multiple-choice questions reveal the fragility of students' understanding. Collectively, the data show that many undergraduates lack both a basic understanding of the role of photosynthesis in plant metabolism and the ability to reason with scientific principles when learning new content. Implications for instruction are discussed.  相似文献   
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Joyce 《音乐世界》2012,(8):140-141
纵观2012的国际T台,海洋风无疑是这一季最引人注目的关键词,赏心悦目之余,你身体里那些属于夏天的细胞是不是也已经被这股清新之风唤醒?  相似文献   
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Our paper focuses on the role that the gender composition of the leaders of American colleges and universities - trustees, presidents, and provosts - play in influencing the rate at which academic institutions diversify their faculty across gender lines. Our analyses make use of institutional level panel data that we have collected for a large sample of American academic institutions.  相似文献   
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Portugal     
In the library literature, a great deal of interest in patron-driven collection development has recently been expressed, especially in those programs that link acquisitions with interlibrary loan. However, the implementation of such programs has been limited, at least in part because of concerns over the potential for wasteful spending. The authors will attempt to address this common concern by assessing whether monies spent via a patron-driven acquisitions program were more or less effective than monies spent via traditional modes of acquisition.  相似文献   
85.
Nowadays, music festivals are very important for generating revenue streams in the music industry. However, studies on what makes music festivals a success are scant. In this article, a conceptual model to explain the success of music festivals is introduced and tested. Such a model seems pressing now that competition in the music festival industry is increasing. Our conceptual model includes variables that are under the control of music festival organizers, namely format and content characteristics. The content features include scope of the audience, lineup, age, and having a theme or message. Budget, ticket price, location, and having a maximum visitor capacity make up the format features. The model is tested with data from 47 music festivals in the Netherlands. The results show that relatively newer festivals can achieve good growth in terms of visitor attendance, especially if they have a narrow scope (niche). Interestingly, this is true for both large and small festivals. Our findings are important with respect to music festival diversity and choice for audiences, which may be at risk due to increasing competition. The fact that several festivals have a capacity constraint seems to be beneficial for diversity as well. Interestingly, budgets (and star lineup and ticket price), theme, and location are largely nonsignificant predictors of success.  相似文献   
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Joyce Mesrobian is an early childhood consultant and storyteller in Chicago and its suburbs  相似文献   
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